Moved vendored js/css into `public/vendor` and documented sources (#1484) (#2241)

* Cleaning up public/ and documenting js/css libs. This commit mostly addresses #1484 by moving vendor'ed plugins into a vendor/ directory and documenting their upstream source and license in vendor/librejs.html. This also proves gitea is using only open source js/css libraries which helps toward reaching #1524. * Removing unused css file. The version of this file in use is located at: vendor/plugins/highlight/github.css * Cleaned up librejs.html and added javascript header A SafeJS function was added to templates/helper.go to allow keeping comments inside of javascript. A javascript comment was added in the header of templates/base/head.tmpl to mark all non-inline source as free. The librejs.html file was updated to meet the current librejs spec. I have now verified that the librejs plugin detects most of the scripts included in gitea and suspect the non-free detections are the result of a bug in the plugin. I believe this commit is enough to meet the C0.0 requirement of #1534. * Updating SafeJS function per lint suggestion * Added VERSIONS file, per request
author: Michael Lustfield <MTecknology@users.noreply.github.com> 2017-08-23 09:58:05 -0500
committer: Kim "BKC" Carlbäcker <kim.carlbacker@gmail.com> 2017-08-23 16:58:05 +0200
commit: a915a09e4f8edc7734c9374ad9f9a51b39241ee3 (patch)
tree: d2498d2cfb579cd5c1d73d750163905cfbc5fab5 /public/vendor/plugins/pdfjs/web
parent: 64b706884635bcac31710d878bbb5e1b2d96ac0c (diff)
download: gitea-a915a09e4f8edc7734c9374ad9f9a51b39241ee3.tar.gz
gitea-a915a09e4f8edc7734c9374ad9f9a51b39241ee3.zip
89 files changed, 11857 insertions, 0 deletions
diff --git a/public/vendor/plugins/pdfjs/web/compatibility.js b/public/vendor/plugins/pdfjs/web/compatibility.js
new file mode 100644
index 0000000000..1119a2742a
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/compatibility.js
@@ -0,0 +1,593 @@
+/* Copyright 2012 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* globals VBArray, PDFJS */
+
+'use strict';
+
+// Initializing PDFJS global object here, it case if we need to change/disable
+// some PDF.js features, e.g. range requests
+if (typeof PDFJS === 'undefined') {
+  (typeof window !== 'undefined' ? window : this).PDFJS = {};
+}
+
+// Checking if the typed arrays are supported
+// Support: iOS<6.0 (subarray), IE<10, Android<4.0
+(function checkTypedArrayCompatibility() {
+  if (typeof Uint8Array !== 'undefined') {
+    // Support: iOS<6.0
+    if (typeof Uint8Array.prototype.subarray === 'undefined') {
+        Uint8Array.prototype.subarray = function subarray(start, end) {
+          return new Uint8Array(this.slice(start, end));
+        };
+        Float32Array.prototype.subarray = function subarray(start, end) {
+          return new Float32Array(this.slice(start, end));
+        };
+    }
+
+    // Support: Android<4.1
+    if (typeof Float64Array === 'undefined') {
+      window.Float64Array = Float32Array;
+    }
+    return;
+  }
+
+  function subarray(start, end) {
+    return new TypedArray(this.slice(start, end));
+  }
+
+  function setArrayOffset(array, offset) {
+    if (arguments.length < 2) {
+      offset = 0;
+    }
+    for (var i = 0, n = array.length; i < n; ++i, ++offset) {
+      this[offset] = array[i] & 0xFF;
+    }
+  }
+
+  function TypedArray(arg1) {
+    var result, i, n;
+    if (typeof arg1 === 'number') {
+      result = [];
+      for (i = 0; i < arg1; ++i) {
+        result[i] = 0;
+      }
+    } else if ('slice' in arg1) {
+      result = arg1.slice(0);
+    } else {
+      result = [];
+      for (i = 0, n = arg1.length; i < n; ++i) {
+        result[i] = arg1[i];
+      }
+    }
+
+    result.subarray = subarray;
+    result.buffer = result;
+    result.byteLength = result.length;
+    result.set = setArrayOffset;
+
+    if (typeof arg1 === 'object' && arg1.buffer) {
+      result.buffer = arg1.buffer;
+    }
+    return result;
+  }
+
+  window.Uint8Array = TypedArray;
+  window.Int8Array = TypedArray;
+
+  // we don't need support for set, byteLength for 32-bit array
+  // so we can use the TypedArray as well
+  window.Uint32Array = TypedArray;
+  window.Int32Array = TypedArray;
+  window.Uint16Array = TypedArray;
+  window.Float32Array = TypedArray;
+  window.Float64Array = TypedArray;
+})();
+
+// URL = URL || webkitURL
+// Support: Safari<7, Android 4.2+
+(function normalizeURLObject() {
+  if (!window.URL) {
+    window.URL = window.webkitURL;
+  }
+})();
+
+// Object.defineProperty()?
+// Support: Android<4.0, Safari<5.1
+(function checkObjectDefinePropertyCompatibility() {
+  if (typeof Object.defineProperty !== 'undefined') {
+    var definePropertyPossible = true;
+    try {
+      // some browsers (e.g. safari) cannot use defineProperty() on DOM objects
+      // and thus the native version is not sufficient
+      Object.defineProperty(new Image(), 'id', { value: 'test' });
+      // ... another test for android gb browser for non-DOM objects
+      var Test = function Test() {};
+      Test.prototype = { get id() { } };
+      Object.defineProperty(new Test(), 'id',
+        { value: '', configurable: true, enumerable: true, writable: false });
+    } catch (e) {
+      definePropertyPossible = false;
+    }
+    if (definePropertyPossible) {
+      return;
+    }
+  }
+
+  Object.defineProperty = function objectDefineProperty(obj, name, def) {
+    delete obj[name];
+    if ('get' in def) {
+      obj.__defineGetter__(name, def['get']);
+    }
+    if ('set' in def) {
+      obj.__defineSetter__(name, def['set']);
+    }
+    if ('value' in def) {
+      obj.__defineSetter__(name, function objectDefinePropertySetter(value) {
+        this.__defineGetter__(name, function objectDefinePropertyGetter() {
+          return value;
+        });
+        return value;
+      });
+      obj[name] = def.value;
+    }
+  };
+})();
+
+
+// No XMLHttpRequest#response?
+// Support: IE<11, Android <4.0
+(function checkXMLHttpRequestResponseCompatibility() {
+  var xhrPrototype = XMLHttpRequest.prototype;
+  var xhr = new XMLHttpRequest();
+  if (!('overrideMimeType' in xhr)) {
+    // IE10 might have response, but not overrideMimeType
+    // Support: IE10
+    Object.defineProperty(xhrPrototype, 'overrideMimeType', {
+      value: function xmlHttpRequestOverrideMimeType(mimeType) {}
+    });
+  }
+  if ('responseType' in xhr) {
+    return;
+  }
+
+  // The worker will be using XHR, so we can save time and disable worker.
+  PDFJS.disableWorker = true;
+
+  Object.defineProperty(xhrPrototype, 'responseType', {
+    get: function xmlHttpRequestGetResponseType() {
+      return this._responseType || 'text';
+    },
+    set: function xmlHttpRequestSetResponseType(value) {
+      if (value === 'text' || value === 'arraybuffer') {
+        this._responseType = value;
+        if (value === 'arraybuffer' &&
+            typeof this.overrideMimeType === 'function') {
+          this.overrideMimeType('text/plain; charset=x-user-defined');
+        }
+      }
+    }
+  });
+
+  // Support: IE9
+  if (typeof VBArray !== 'undefined') {
+    Object.defineProperty(xhrPrototype, 'response', {
+      get: function xmlHttpRequestResponseGet() {
+        if (this.responseType === 'arraybuffer') {
+          return new Uint8Array(new VBArray(this.responseBody).toArray());
+        } else {
+          return this.responseText;
+        }
+      }
+    });
+    return;
+  }
+
+  Object.defineProperty(xhrPrototype, 'response', {
+    get: function xmlHttpRequestResponseGet() {
+      if (this.responseType !== 'arraybuffer') {
+        return this.responseText;
+      }
+      var text = this.responseText;
+      var i, n = text.length;
+      var result = new Uint8Array(n);
+      for (i = 0; i < n; ++i) {
+        result[i] = text.charCodeAt(i) & 0xFF;
+      }
+      return result.buffer;
+    }
+  });
+})();
+
+// window.btoa (base64 encode function) ?
+// Support: IE<10
+(function checkWindowBtoaCompatibility() {
+  if ('btoa' in window) {
+    return;
+  }
+
+  var digits =
+    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+
+  window.btoa = function windowBtoa(chars) {
+    var buffer = '';
+    var i, n;
+    for (i = 0, n = chars.length; i < n; i += 3) {
+      var b1 = chars.charCodeAt(i) & 0xFF;
+      var b2 = chars.charCodeAt(i + 1) & 0xFF;
+      var b3 = chars.charCodeAt(i + 2) & 0xFF;
+      var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
+      var d3 = i + 1 < n ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
+      var d4 = i + 2 < n ? (b3 & 0x3F) : 64;
+      buffer += (digits.charAt(d1) + digits.charAt(d2) +
+                 digits.charAt(d3) + digits.charAt(d4));
+    }
+    return buffer;
+  };
+})();
+
+// window.atob (base64 encode function)?
+// Support: IE<10
+(function checkWindowAtobCompatibility() {
+  if ('atob' in window) {
+    return;
+  }
+
+  // https://github.com/davidchambers/Base64.js
+  var digits =
+    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+  window.atob = function (input) {
+    input = input.replace(/=+$/, '');
+    if (input.length % 4 === 1) {
+      throw new Error('bad atob input');
+    }
+    for (
+      // initialize result and counters
+      var bc = 0, bs, buffer, idx = 0, output = '';
+      // get next character
+      buffer = input.charAt(idx++);
+      // character found in table?
+      // initialize bit storage and add its ascii value
+      ~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer,
+        // and if not first of each 4 characters,
+        // convert the first 8 bits to one ascii character
+        bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0
+    ) {
+      // try to find character in table (0-63, not found => -1)
+      buffer = digits.indexOf(buffer);
+    }
+    return output;
+  };
+})();
+
+// Function.prototype.bind?
+// Support: Android<4.0, iOS<6.0
+(function checkFunctionPrototypeBindCompatibility() {
+  if (typeof Function.prototype.bind !== 'undefined') {
+    return;
+  }
+
+  Function.prototype.bind = function functionPrototypeBind(obj) {
+    var fn = this, headArgs = Array.prototype.slice.call(arguments, 1);
+    var bound = function functionPrototypeBindBound() {
+      var args = headArgs.concat(Array.prototype.slice.call(arguments));
+      return fn.apply(obj, args);
+    };
+    return bound;
+  };
+})();
+
+// HTMLElement dataset property
+// Support: IE<11, Safari<5.1, Android<4.0
+(function checkDatasetProperty() {
+  var div = document.createElement('div');
+  if ('dataset' in div) {
+    return; // dataset property exists
+  }
+
+  Object.defineProperty(HTMLElement.prototype, 'dataset', {
+    get: function() {
+      if (this._dataset) {
+        return this._dataset;
+      }
+
+      var dataset = {};
+      for (var j = 0, jj = this.attributes.length; j < jj; j++) {
+        var attribute = this.attributes[j];
+        if (attribute.name.substring(0, 5) !== 'data-') {
+          continue;
+        }
+        var key = attribute.name.substring(5).replace(/\-([a-z])/g,
+          function(all, ch) {
+            return ch.toUpperCase();
+          });
+        dataset[key] = attribute.value;
+      }
+
+      Object.defineProperty(this, '_dataset', {
+        value: dataset,
+        writable: false,
+        enumerable: false
+      });
+      return dataset;
+    },
+    enumerable: true
+  });
+})();
+
+// HTMLElement classList property
+// Support: IE<10, Android<4.0, iOS<5.0
+(function checkClassListProperty() {
+  var div = document.createElement('div');
+  if ('classList' in div) {
+    return; // classList property exists
+  }
+
+  function changeList(element, itemName, add, remove) {
+    var s = element.className || '';
+    var list = s.split(/\s+/g);
+    if (list[0] === '') {
+      list.shift();
+    }
+    var index = list.indexOf(itemName);
+    if (index < 0 && add) {
+      list.push(itemName);
+    }
+    if (index >= 0 && remove) {
+      list.splice(index, 1);
+    }
+    element.className = list.join(' ');
+    return (index >= 0);
+  }
+
+  var classListPrototype = {
+    add: function(name) {
+      changeList(this.element, name, true, false);
+    },
+    contains: function(name) {
+      return changeList(this.element, name, false, false);
+    },
+    remove: function(name) {
+      changeList(this.element, name, false, true);
+    },
+    toggle: function(name) {
+      changeList(this.element, name, true, true);
+    }
+  };
+
+  Object.defineProperty(HTMLElement.prototype, 'classList', {
+    get: function() {
+      if (this._classList) {
+        return this._classList;
+      }
+
+      var classList = Object.create(classListPrototype, {
+        element: {
+          value: this,
+          writable: false,
+          enumerable: true
+        }
+      });
+      Object.defineProperty(this, '_classList', {
+        value: classList,
+        writable: false,
+        enumerable: false
+      });
+      return classList;
+    },
+    enumerable: true
+  });
+})();
+
+// Check console compatibility
+// In older IE versions the console object is not available
+// unless console is open.
+// Support: IE<10
+(function checkConsoleCompatibility() {
+  if (!('console' in window)) {
+    window.console = {
+      log: function() {},
+      error: function() {},
+      warn: function() {}
+    };
+  } else if (!('bind' in console.log)) {
+    // native functions in IE9 might not have bind
+    console.log = (function(fn) {
+      return function(msg) { return fn(msg); };
+    })(console.log);
+    console.error = (function(fn) {
+      return function(msg) { return fn(msg); };
+    })(console.error);
+    console.warn = (function(fn) {
+      return function(msg) { return fn(msg); };
+    })(console.warn);
+  }
+})();
+
+// Check onclick compatibility in Opera
+// Support: Opera<15
+(function checkOnClickCompatibility() {
+  // workaround for reported Opera bug DSK-354448:
+  // onclick fires on disabled buttons with opaque content
+  function ignoreIfTargetDisabled(event) {
+    if (isDisabled(event.target)) {
+      event.stopPropagation();
+    }
+  }
+  function isDisabled(node) {
+    return node.disabled || (node.parentNode && isDisabled(node.parentNode));
+  }
+  if (navigator.userAgent.indexOf('Opera') !== -1) {
+    // use browser detection since we cannot feature-check this bug
+    document.addEventListener('click', ignoreIfTargetDisabled, true);
+  }
+})();
+
+// Checks if possible to use URL.createObjectURL()
+// Support: IE
+(function checkOnBlobSupport() {
+  // sometimes IE loosing the data created with createObjectURL(), see #3977
+  if (navigator.userAgent.indexOf('Trident') >= 0) {
+    PDFJS.disableCreateObjectURL = true;
+  }
+})();
+
+// Checks if navigator.language is supported
+(function checkNavigatorLanguage() {
+  if ('language' in navigator) {
+    return;
+  }
+  PDFJS.locale = navigator.userLanguage || 'en-US';
+})();
+
+(function checkRangeRequests() {
+  // Safari has issues with cached range requests see:
+  // https://github.com/mozilla/pdf.js/issues/3260
+  // Last tested with version 6.0.4.
+  // Support: Safari 6.0+
+  var isSafari = Object.prototype.toString.call(
+                  window.HTMLElement).indexOf('Constructor') > 0;
+
+  // Older versions of Android (pre 3.0) has issues with range requests, see:
+  // https://github.com/mozilla/pdf.js/issues/3381.
+  // Make sure that we only match webkit-based Android browsers,
+  // since Firefox/Fennec works as expected.
+  // Support: Android<3.0
+  var regex = /Android\s[0-2][^\d]/;
+  var isOldAndroid = regex.test(navigator.userAgent);
+
+  // Range requests are broken in Chrome 39 and 40, https://crbug.com/442318
+  var isChromeWithRangeBug = /Chrome\/(39|40)\./.test(navigator.userAgent);
+
+  if (isSafari || isOldAndroid || isChromeWithRangeBug) {
+    PDFJS.disableRange = true;
+    PDFJS.disableStream = true;
+  }
+})();
+
+// Check if the browser supports manipulation of the history.
+// Support: IE<10, Android<4.2
+(function checkHistoryManipulation() {
+  // Android 2.x has so buggy pushState support that it was removed in
+  // Android 3.0 and restored as late as in Android 4.2.
+  // Support: Android 2.x
+  if (!history.pushState || navigator.userAgent.indexOf('Android 2.') >= 0) {
+    PDFJS.disableHistory = true;
+  }
+})();
+
+// Support: IE<11, Chrome<21, Android<4.4, Safari<6
+(function checkSetPresenceInImageData() {
+  // IE < 11 will use window.CanvasPixelArray which lacks set function.
+  if (window.CanvasPixelArray) {
+    if (typeof window.CanvasPixelArray.prototype.set !== 'function') {
+      window.CanvasPixelArray.prototype.set = function(arr) {
+        for (var i = 0, ii = this.length; i < ii; i++) {
+          this[i] = arr[i];
+        }
+      };
+    }
+  } else {
+    // Old Chrome and Android use an inaccessible CanvasPixelArray prototype.
+    // Because we cannot feature detect it, we rely on user agent parsing.
+    var polyfill = false, versionMatch;
+    if (navigator.userAgent.indexOf('Chrom') >= 0) {
+      versionMatch = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
+      // Chrome < 21 lacks the set function.
+      polyfill = versionMatch && parseInt(versionMatch[2]) < 21;
+    } else if (navigator.userAgent.indexOf('Android') >= 0) {
+      // Android < 4.4 lacks the set function.
+      // Android >= 4.4 will contain Chrome in the user agent,
+      // thus pass the Chrome check above and not reach this block.
+      polyfill = /Android\s[0-4][^\d]/g.test(navigator.userAgent);
+    } else if (navigator.userAgent.indexOf('Safari') >= 0) {
+      versionMatch = navigator.userAgent.
+        match(/Version\/([0-9]+)\.([0-9]+)\.([0-9]+) Safari\//);
+      // Safari < 6 lacks the set function.
+      polyfill = versionMatch && parseInt(versionMatch[1]) < 6;
+    }
+
+    if (polyfill) {
+      var contextPrototype = window.CanvasRenderingContext2D.prototype;
+      var createImageData = contextPrototype.createImageData;
+      contextPrototype.createImageData = function(w, h) {
+        var imageData = createImageData.call(this, w, h);
+        imageData.data.set = function(arr) {
+          for (var i = 0, ii = this.length; i < ii; i++) {
+            this[i] = arr[i];
+          }
+        };
+        return imageData;
+      };
+      // this closure will be kept referenced, so clear its vars
+      contextPrototype = null;
+    }
+  }
+})();
+
+// Support: IE<10, Android<4.0, iOS
+(function checkRequestAnimationFrame() {
+  function fakeRequestAnimationFrame(callback) {
+    window.setTimeout(callback, 20);
+  }
+
+  var isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent);
+  if (isIOS) {
+    // requestAnimationFrame on iOS is broken, replacing with fake one.
+    window.requestAnimationFrame = fakeRequestAnimationFrame;
+    return;
+  }
+  if ('requestAnimationFrame' in window) {
+    return;
+  }
+  window.requestAnimationFrame =
+    window.mozRequestAnimationFrame ||
+    window.webkitRequestAnimationFrame ||
+    fakeRequestAnimationFrame;
+})();
+
+(function checkCanvasSizeLimitation() {
+  var isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent);
+  var isAndroid = /Android/g.test(navigator.userAgent);
+  if (isIOS || isAndroid) {
+    // 5MP
+    PDFJS.maxCanvasPixels = 5242880;
+  }
+})();
+
+// Disable fullscreen support for certain problematic configurations.
+// Support: IE11+ (when embedded).
+(function checkFullscreenSupport() {
+  var isEmbeddedIE = (navigator.userAgent.indexOf('Trident') >= 0 &&
+                      window.parent !== window);
+  if (isEmbeddedIE) {
+    PDFJS.disableFullscreen = true;
+  }
+})();
+
+// Provides document.currentScript support
+// Support: IE, Chrome<29.
+(function checkCurrentScript() {
+  if ('currentScript' in document) {
+    return;
+  }
+  Object.defineProperty(document, 'currentScript', {
+    get: function () {
+      var scripts = document.getElementsByTagName('script');
+      return scripts[scripts.length - 1];
+    },
+    enumerable: true,
+    configurable: true
+  });
+})();
diff --git a/public/vendor/plugins/pdfjs/web/debugger.js b/public/vendor/plugins/pdfjs/web/debugger.js
new file mode 100644
index 0000000000..9c35b63d79
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/debugger.js
@@ -0,0 +1,618 @@
+/* Copyright 2012 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* globals PDFJS */
+
+'use strict';
+
+var FontInspector = (function FontInspectorClosure() {
+  var fonts;
+  var active = false;
+  var fontAttribute = 'data-font-name';
+  function removeSelection() {
+    var divs = document.querySelectorAll('div[' + fontAttribute + ']');
+    for (var i = 0, ii = divs.length; i < ii; ++i) {
+      var div = divs[i];
+      div.className = '';
+    }
+  }
+  function resetSelection() {
+    var divs = document.querySelectorAll('div[' + fontAttribute + ']');
+    for (var i = 0, ii = divs.length; i < ii; ++i) {
+      var div = divs[i];
+      div.className = 'debuggerHideText';
+    }
+  }
+  function selectFont(fontName, show) {
+    var divs = document.querySelectorAll('div[' + fontAttribute + '=' +
+                                         fontName + ']');
+    for (var i = 0, ii = divs.length; i < ii; ++i) {
+      var div = divs[i];
+      div.className = show ? 'debuggerShowText' : 'debuggerHideText';
+    }
+  }
+  function textLayerClick(e) {
+    if (!e.target.dataset.fontName ||
+        e.target.tagName.toUpperCase() !== 'DIV') {
+      return;
+    }
+    var fontName = e.target.dataset.fontName;
+    var selects = document.getElementsByTagName('input');
+    for (var i = 0; i < selects.length; ++i) {
+      var select = selects[i];
+      if (select.dataset.fontName !== fontName) {
+        continue;
+      }
+      select.checked = !select.checked;
+      selectFont(fontName, select.checked);
+      select.scrollIntoView();
+    }
+  }
+  return {
+    // Properties/functions needed by PDFBug.
+    id: 'FontInspector',
+    name: 'Font Inspector',
+    panel: null,
+    manager: null,
+    init: function init() {
+      var panel = this.panel;
+      panel.setAttribute('style', 'padding: 5px;');
+      var tmp = document.createElement('button');
+      tmp.addEventListener('click', resetSelection);
+      tmp.textContent = 'Refresh';
+      panel.appendChild(tmp);
+
+      fonts = document.createElement('div');
+      panel.appendChild(fonts);
+    },
+    cleanup: function cleanup() {
+      fonts.textContent = '';
+    },
+    enabled: false,
+    get active() {
+      return active;
+    },
+    set active(value) {
+      active = value;
+      if (active) {
+        document.body.addEventListener('click', textLayerClick, true);
+        resetSelection();
+      } else {
+        document.body.removeEventListener('click', textLayerClick, true);
+        removeSelection();
+      }
+    },
+    // FontInspector specific functions.
+    fontAdded: function fontAdded(fontObj, url) {
+      function properties(obj, list) {
+        var moreInfo = document.createElement('table');
+        for (var i = 0; i < list.length; i++) {
+          var tr = document.createElement('tr');
+          var td1 = document.createElement('td');
+          td1.textContent = list[i];
+          tr.appendChild(td1);
+          var td2 = document.createElement('td');
+          td2.textContent = obj[list[i]].toString();
+          tr.appendChild(td2);
+          moreInfo.appendChild(tr);
+        }
+        return moreInfo;
+      }
+      var moreInfo = properties(fontObj, ['name', 'type']);
+      var fontName = fontObj.loadedName;
+      var font = document.createElement('div');
+      var name = document.createElement('span');
+      name.textContent = fontName;
+      var download = document.createElement('a');
+      if (url) {
+        url = /url\(['"]?([^\)"']+)/.exec(url);
+        download.href = url[1];
+      } else if (fontObj.data) {
+        url = URL.createObjectURL(new Blob([fontObj.data], {
+          type: fontObj.mimeType
+        }));
+        download.href = url;
+      }
+      download.textContent = 'Download';
+      var logIt = document.createElement('a');
+      logIt.href = '';
+      logIt.textContent = 'Log';
+      logIt.addEventListener('click', function(event) {
+        event.preventDefault();
+        console.log(fontObj);
+      });
+      var select = document.createElement('input');
+      select.setAttribute('type', 'checkbox');
+      select.dataset.fontName = fontName;
+      select.addEventListener('click', (function(select, fontName) {
+        return (function() {
+           selectFont(fontName, select.checked);
+        });
+      })(select, fontName));
+      font.appendChild(select);
+      font.appendChild(name);
+      font.appendChild(document.createTextNode(' '));
+      font.appendChild(download);
+      font.appendChild(document.createTextNode(' '));
+      font.appendChild(logIt);
+      font.appendChild(moreInfo);
+      fonts.appendChild(font);
+      // Somewhat of a hack, should probably add a hook for when the text layer
+      // is done rendering.
+      setTimeout(function() {
+        if (this.active) {
+          resetSelection();
+        }
+      }.bind(this), 2000);
+    }
+  };
+})();
+
+// Manages all the page steppers.
+var StepperManager = (function StepperManagerClosure() {
+  var steppers = [];
+  var stepperDiv = null;
+  var stepperControls = null;
+  var stepperChooser = null;
+  var breakPoints = {};
+  return {
+    // Properties/functions needed by PDFBug.
+    id: 'Stepper',
+    name: 'Stepper',
+    panel: null,
+    manager: null,
+    init: function init() {
+      var self = this;
+      this.panel.setAttribute('style', 'padding: 5px;');
+      stepperControls = document.createElement('div');
+      stepperChooser = document.createElement('select');
+      stepperChooser.addEventListener('change', function(event) {
+        self.selectStepper(this.value);
+      });
+      stepperControls.appendChild(stepperChooser);
+      stepperDiv = document.createElement('div');
+      this.panel.appendChild(stepperControls);
+      this.panel.appendChild(stepperDiv);
+      if (sessionStorage.getItem('pdfjsBreakPoints')) {
+        breakPoints = JSON.parse(sessionStorage.getItem('pdfjsBreakPoints'));
+      }
+    },
+    cleanup: function cleanup() {
+      stepperChooser.textContent = '';
+      stepperDiv.textContent = '';
+      steppers = [];
+    },
+    enabled: false,
+    active: false,
+    // Stepper specific functions.
+    create: function create(pageIndex) {
+      var debug = document.createElement('div');
+      debug.id = 'stepper' + pageIndex;
+      debug.setAttribute('hidden', true);
+      debug.className = 'stepper';
+      stepperDiv.appendChild(debug);
+      var b = document.createElement('option');
+      b.textContent = 'Page ' + (pageIndex + 1);
+      b.value = pageIndex;
+      stepperChooser.appendChild(b);
+      var initBreakPoints = breakPoints[pageIndex] || [];
+      var stepper = new Stepper(debug, pageIndex, initBreakPoints);
+      steppers.push(stepper);
+      if (steppers.length === 1) {
+        this.selectStepper(pageIndex, false);
+      }
+      return stepper;
+    },
+    selectStepper: function selectStepper(pageIndex, selectPanel) {
+      var i;
+      pageIndex = pageIndex | 0;
+      if (selectPanel) {
+        this.manager.selectPanel(this);
+      }
+      for (i = 0; i < steppers.length; ++i) {
+        var stepper = steppers[i];
+        if (stepper.pageIndex === pageIndex) {
+          stepper.panel.removeAttribute('hidden');
+        } else {
+          stepper.panel.setAttribute('hidden', true);
+        }
+      }
+      var options = stepperChooser.options;
+      for (i = 0; i < options.length; ++i) {
+        var option = options[i];
+        option.selected = (option.value | 0) === pageIndex;
+      }
+    },
+    saveBreakPoints: function saveBreakPoints(pageIndex, bps) {
+      breakPoints[pageIndex] = bps;
+      sessionStorage.setItem('pdfjsBreakPoints', JSON.stringify(breakPoints));
+    }
+  };
+})();
+
+// The stepper for each page's IRQueue.
+var Stepper = (function StepperClosure() {
+  // Shorter way to create element and optionally set textContent.
+  function c(tag, textContent) {
+    var d = document.createElement(tag);
+    if (textContent) {
+      d.textContent = textContent;
+    }
+    return d;
+  }
+
+  var opMap = null;
+
+  function simplifyArgs(args) {
+    if (typeof args === 'string') {
+      var MAX_STRING_LENGTH = 75;
+      return args.length <= MAX_STRING_LENGTH ? args :
+        args.substr(0, MAX_STRING_LENGTH) + '...';
+    }
+    if (typeof args !== 'object' || args === null) {
+      return args;
+    }
+    if ('length' in args) { // array
+      var simpleArgs = [], i, ii;
+      var MAX_ITEMS = 10;
+      for (i = 0, ii = Math.min(MAX_ITEMS, args.length); i < ii; i++) {
+        simpleArgs.push(simplifyArgs(args[i]));
+      }
+      if (i < args.length) {
+        simpleArgs.push('...');
+      }
+      return simpleArgs;
+    }
+    var simpleObj = {};
+    for (var key in args) {
+      simpleObj[key] = simplifyArgs(args[key]);
+    }
+    return simpleObj;
+  }
+
+  function Stepper(panel, pageIndex, initialBreakPoints) {
+    this.panel = panel;
+    this.breakPoint = 0;
+    this.nextBreakPoint = null;
+    this.pageIndex = pageIndex;
+    this.breakPoints = initialBreakPoints;
+    this.currentIdx = -1;
+    this.operatorListIdx = 0;
+  }
+  Stepper.prototype = {
+    init: function init() {
+      var panel = this.panel;
+      var content = c('div', 'c=continue, s=step');
+      var table = c('table');
+      content.appendChild(table);
+      table.cellSpacing = 0;
+      var headerRow = c('tr');
+      table.appendChild(headerRow);
+      headerRow.appendChild(c('th', 'Break'));
+      headerRow.appendChild(c('th', 'Idx'));
+      headerRow.appendChild(c('th', 'fn'));
+      headerRow.appendChild(c('th', 'args'));
+      panel.appendChild(content);
+      this.table = table;
+      if (!opMap) {
+        opMap = Object.create(null);
+        for (var key in PDFJS.OPS) {
+          opMap[PDFJS.OPS[key]] = key;
+        }
+      }
+    },
+    updateOperatorList: function updateOperatorList(operatorList) {
+      var self = this;
+
+      function cboxOnClick() {
+        var x = +this.dataset.idx;
+        if (this.checked) {
+          self.breakPoints.push(x);
+        } else {
+          self.breakPoints.splice(self.breakPoints.indexOf(x), 1);
+        }
+        StepperManager.saveBreakPoints(self.pageIndex, self.breakPoints);
+      }
+
+      var MAX_OPERATORS_COUNT = 15000;
+      if (this.operatorListIdx > MAX_OPERATORS_COUNT) {
+        return;
+      }
+
+      var chunk = document.createDocumentFragment();
+      var operatorsToDisplay = Math.min(MAX_OPERATORS_COUNT,
+                                        operatorList.fnArray.length);
+      for (var i = this.operatorListIdx; i < operatorsToDisplay; i++) {
+        var line = c('tr');
+        line.className = 'line';
+        line.dataset.idx = i;
+        chunk.appendChild(line);
+        var checked = this.breakPoints.indexOf(i) !== -1;
+        var args = operatorList.argsArray[i] || [];
+
+        var breakCell = c('td');
+        var cbox = c('input');
+        cbox.type = 'checkbox';
+        cbox.className = 'points';
+        cbox.checked = checked;
+        cbox.dataset.idx = i;
+        cbox.onclick = cboxOnClick;
+
+        breakCell.appendChild(cbox);
+        line.appendChild(breakCell);
+        line.appendChild(c('td', i.toString()));
+        var fn = opMap[operatorList.fnArray[i]];
+        var decArgs = args;
+        if (fn === 'showText') {
+          var glyphs = args[0];
+          var newArgs = [];
+          var str = [];
+          for (var j = 0; j < glyphs.length; j++) {
+            var glyph = glyphs[j];
+            if (typeof glyph === 'object' && glyph !== null) {
+              str.push(glyph.fontChar);
+            } else {
+              if (str.length > 0) {
+                newArgs.push(str.join(''));
+                str = [];
+              }
+              newArgs.push(glyph); // null or number
+            }
+          }
+          if (str.length > 0) {
+            newArgs.push(str.join(''));
+          }
+          decArgs = [newArgs];
+        }
+        line.appendChild(c('td', fn));
+        line.appendChild(c('td', JSON.stringify(simplifyArgs(decArgs))));
+      }
+      if (operatorsToDisplay < operatorList.fnArray.length) {
+        line = c('tr');
+        var lastCell = c('td', '...');
+        lastCell.colspan = 4;
+        chunk.appendChild(lastCell);
+      }
+      this.operatorListIdx = operatorList.fnArray.length;
+      this.table.appendChild(chunk);
+    },
+    getNextBreakPoint: function getNextBreakPoint() {
+      this.breakPoints.sort(function(a, b) { return a - b; });
+      for (var i = 0; i < this.breakPoints.length; i++) {
+        if (this.breakPoints[i] > this.currentIdx) {
+          return this.breakPoints[i];
+        }
+      }
+      return null;
+    },
+    breakIt: function breakIt(idx, callback) {
+      StepperManager.selectStepper(this.pageIndex, true);
+      var self = this;
+      var dom = document;
+      self.currentIdx = idx;
+      var listener = function(e) {
+        switch (e.keyCode) {
+          case 83: // step
+            dom.removeEventListener('keydown', listener, false);
+            self.nextBreakPoint = self.currentIdx + 1;
+            self.goTo(-1);
+            callback();
+            break;
+          case 67: // continue
+            dom.removeEventListener('keydown', listener, false);
+            var breakPoint = self.getNextBreakPoint();
+            self.nextBreakPoint = breakPoint;
+            self.goTo(-1);
+            callback();
+            break;
+        }
+      };
+      dom.addEventListener('keydown', listener, false);
+      self.goTo(idx);
+    },
+    goTo: function goTo(idx) {
+      var allRows = this.panel.getElementsByClassName('line');
+      for (var x = 0, xx = allRows.length; x < xx; ++x) {
+        var row = allRows[x];
+        if ((row.dataset.idx | 0) === idx) {
+          row.style.backgroundColor = 'rgb(251,250,207)';
+          row.scrollIntoView();
+        } else {
+          row.style.backgroundColor = null;
+        }
+      }
+    }
+  };
+  return Stepper;
+})();
+
+var Stats = (function Stats() {
+  var stats = [];
+  function clear(node) {
+    while (node.hasChildNodes()) {
+      node.removeChild(node.lastChild);
+    }
+  }
+  function getStatIndex(pageNumber) {
+    for (var i = 0, ii = stats.length; i < ii; ++i) {
+      if (stats[i].pageNumber === pageNumber) {
+        return i;
+      }
+    }
+    return false;
+  }
+  return {
+    // Properties/functions needed by PDFBug.
+    id: 'Stats',
+    name: 'Stats',
+    panel: null,
+    manager: null,
+    init: function init() {
+      this.panel.setAttribute('style', 'padding: 5px;');
+      PDFJS.enableStats = true;
+    },
+    enabled: false,
+    active: false,
+    // Stats specific functions.
+    add: function(pageNumber, stat) {
+      if (!stat) {
+        return;
+      }
+      var statsIndex = getStatIndex(pageNumber);
+      if (statsIndex !== false) {
+        var b = stats[statsIndex];
+        this.panel.removeChild(b.div);
+        stats.splice(statsIndex, 1);
+      }
+      var wrapper = document.createElement('div');
+      wrapper.className = 'stats';
+      var title = document.createElement('div');
+      title.className = 'title';
+      title.textContent = 'Page: ' + pageNumber;
+      var statsDiv = document.createElement('div');
+      statsDiv.textContent = stat.toString();
+      wrapper.appendChild(title);
+      wrapper.appendChild(statsDiv);
+      stats.push({ pageNumber: pageNumber, div: wrapper });
+      stats.sort(function(a, b) { return a.pageNumber - b.pageNumber; });
+      clear(this.panel);
+      for (var i = 0, ii = stats.length; i < ii; ++i) {
+        this.panel.appendChild(stats[i].div);
+      }
+    },
+    cleanup: function () {
+      stats = [];
+      clear(this.panel);
+    }
+  };
+})();
+
+// Manages all the debugging tools.
+var PDFBug = (function PDFBugClosure() {
+  var panelWidth = 300;
+  var buttons = [];
+  var activePanel = null;
+
+  return {
+    tools: [
+      FontInspector,
+      StepperManager,
+      Stats
+    ],
+    enable: function(ids) {
+      var all = false, tools = this.tools;
+      if (ids.length === 1 && ids[0] === 'all') {
+        all = true;
+      }
+      for (var i = 0; i < tools.length; ++i) {
+        var tool = tools[i];
+        if (all || ids.indexOf(tool.id) !== -1) {
+          tool.enabled = true;
+        }
+      }
+      if (!all) {
+        // Sort the tools by the order they are enabled.
+        tools.sort(function(a, b) {
+          var indexA = ids.indexOf(a.id);
+          indexA = indexA < 0 ? tools.length : indexA;
+          var indexB = ids.indexOf(b.id);
+          indexB = indexB < 0 ? tools.length : indexB;
+          return indexA - indexB;
+        });
+      }
+    },
+    init: function init() {
+      /*
+       * Basic Layout:
+       * PDFBug
+       *  Controls
+       *  Panels
+       *    Panel
+       *    Panel
+       *    ...
+       */
+      var ui = document.createElement('div');
+      ui.id = 'PDFBug';
+
+      var controls = document.createElement('div');
+      controls.setAttribute('class', 'controls');
+      ui.appendChild(controls);
+
+      var panels = document.createElement('div');
+      panels.setAttribute('class', 'panels');
+      ui.appendChild(panels);
+
+      var container = document.getElementById('viewerContainer');
+      container.appendChild(ui);
+      container.style.right = panelWidth + 'px';
+
+      // Initialize all the debugging tools.
+      var tools = this.tools;
+      var self = this;
+      for (var i = 0; i < tools.length; ++i) {
+        var tool = tools[i];
+        var panel = document.createElement('div');
+        var panelButton = document.createElement('button');
+        panelButton.textContent = tool.name;
+        panelButton.addEventListener('click', (function(selected) {
+          return function(event) {
+            event.preventDefault();
+            self.selectPanel(selected);
+          };
+        })(i));
+        controls.appendChild(panelButton);
+        panels.appendChild(panel);
+        tool.panel = panel;
+        tool.manager = this;
+        if (tool.enabled) {
+          tool.init();
+        } else {
+          panel.textContent = tool.name + ' is disabled. To enable add ' +
+                              ' "' + tool.id + '" to the pdfBug parameter ' +
+                              'and refresh (seperate multiple by commas).';
+        }
+        buttons.push(panelButton);
+      }
+      this.selectPanel(0);
+    },
+    cleanup: function cleanup() {
+      for (var i = 0, ii = this.tools.length; i < ii; i++) {
+        if (this.tools[i].enabled) {
+          this.tools[i].cleanup();
+        }
+      }
+    },
+    selectPanel: function selectPanel(index) {
+      if (typeof index !== 'number') {
+        index = this.tools.indexOf(index);
+      }
+      if (index === activePanel) {
+        return;
+      }
+      activePanel = index;
+      var tools = this.tools;
+      for (var j = 0; j < tools.length; ++j) {
+        if (j === index) {
+          buttons[j].setAttribute('class', 'active');
+          tools[j].active = true;
+          tools[j].panel.removeAttribute('hidden');
+        } else {
+          buttons[j].setAttribute('class', '');
+          tools[j].active = false;
+          tools[j].panel.setAttribute('hidden', 'true');
+        }
+      }
+    }
+  };
+})();
diff --git a/public/vendor/plugins/pdfjs/web/images/annotation-check.svg b/public/vendor/plugins/pdfjs/web/images/annotation-check.svg
new file mode 100644
index 0000000000..71cd16df57
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/annotation-check.svg
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns="http://www.w3.org/2000/svg"
+   width="40"
+   height="40"
+   viewBox="0 0 40 40">
+  <path
+     d="M 1.5006714,23.536225 6.8925879,18.994244 14.585721,26.037937 34.019683,4.5410479 38.499329,9.2235032 14.585721,35.458952 z"
+     id="path4"
+     style="fill:#ffff00;fill-opacity:1;stroke:#000000;stroke-width:1.25402856;stroke-opacity:1" />
+</svg>
diff --git a/public/vendor/plugins/pdfjs/web/images/annotation-comment.svg b/public/vendor/plugins/pdfjs/web/images/annotation-comment.svg
new file mode 100644
index 0000000000..86f1f17249
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/annotation-comment.svg
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns="http://www.w3.org/2000/svg"
+   height="40"
+   width="40"
+   viewBox="0 0 40 40">
+  <rect
+     style="fill:#ffff00;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
+     width="33.76017"
+     height="33.76017"
+     x="3.119915"
+     y="3.119915" />
+  <path
+     d="m 20.677967,8.54499 c -7.342801,0 -13.295293,4.954293 -13.295293,11.065751 0,2.088793 0.3647173,3.484376 1.575539,5.150563 L 6.0267418,31.45501 13.560595,29.011117 c 2.221262,1.387962 4.125932,1.665377 7.117372,1.665377 7.3428,0 13.295291,-4.954295 13.295291,-11.065753 0,-6.111458 -5.952491,-11.065751 -13.295291,-11.065751 z"
+     style="fill:#ffffff;fill-opacity:1;stroke:#000000;stroke-width:0.93031836;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"/>
+</svg>
diff --git a/public/vendor/plugins/pdfjs/web/images/annotation-help.svg b/public/vendor/plugins/pdfjs/web/images/annotation-help.svg
new file mode 100644
index 0000000000..00938fefe0
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/annotation-help.svg
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns="http://www.w3.org/2000/svg"
+   width="40"
+   height="40"
+   viewBox="0 0 40 40">
+  <g
+     transform="translate(0,-60)"
+     id="layer1">
+    <rect
+       width="36.460953"
+       height="34.805603"
+       x="1.7695236"
+       y="62.597198"
+       style="fill:#ffff00;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.30826771;stroke-opacity:1" />
+    <g
+       transform="matrix(0.88763677,0,0,0.88763677,2.2472646,8.9890584)">
+      <path
+         d="M 20,64.526342 C 11.454135,64.526342 4.5263421,71.454135 4.5263421,80 4.5263421,88.545865 11.454135,95.473658 20,95.473658 28.545865,95.473658 35.473658,88.545865 35.473658,80 35.473658,71.454135 28.545865,64.526342 20,64.526342 z m -0.408738,9.488564 c 3.527079,0 6.393832,2.84061 6.393832,6.335441 0,3.494831 -2.866753,6.335441 -6.393832,6.335441 -3.527079,0 -6.393832,-2.84061 -6.393832,-6.335441 0,-3.494831 2.866753,-6.335441 6.393832,-6.335441 z"
+         style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:1.02768445;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none" />
+      <path
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diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-presentationMode.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-presentationMode.png
new file mode 100644
index 0000000000..3ac21244df
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-presentationMode.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-presentationMode@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-presentationMode@2x.png
new file mode 100644
index 0000000000..cada9e7918
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-presentationMode@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-print.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-print.png
new file mode 100644
index 0000000000..51275e54be
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-print.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-print@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-print@2x.png
new file mode 100644
index 0000000000..53d18daf78
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-print@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-search.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-search.png
new file mode 100644
index 0000000000..f9b75579b1
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-search.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-search@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-search@2x.png
new file mode 100644
index 0000000000..456b133248
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-search@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle-rtl.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle-rtl.png
new file mode 100644
index 0000000000..8437095273
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle-rtl.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle-rtl@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle-rtl@2x.png
new file mode 100644
index 0000000000..9d9bfa4f63
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle-rtl@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle.png
new file mode 100644
index 0000000000..1f90f83da7
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle@2x.png
new file mode 100644
index 0000000000..b066fe5cb0
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-secondaryToolbarToggle@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle-rtl.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle-rtl.png
new file mode 100644
index 0000000000..6f85ec061e
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle-rtl.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle-rtl@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle-rtl@2x.png
new file mode 100644
index 0000000000..291e006797
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle-rtl@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle.png
new file mode 100644
index 0000000000..025dc9040e
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle@2x.png
new file mode 100644
index 0000000000..7f834df940
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-sidebarToggle@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewAttachments.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewAttachments.png
new file mode 100644
index 0000000000..fcd0b268a4
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewAttachments.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewAttachments@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewAttachments@2x.png
new file mode 100644
index 0000000000..b979e523e7
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewAttachments@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline-rtl.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline-rtl.png
new file mode 100644
index 0000000000..aaa9430211
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline-rtl.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline-rtl@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline-rtl@2x.png
new file mode 100644
index 0000000000..3410f70dfa
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline-rtl@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline.png
new file mode 100644
index 0000000000..976365a506
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline@2x.png
new file mode 100644
index 0000000000..b6a197fdf3
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewOutline@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewThumbnail.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewThumbnail.png
new file mode 100644
index 0000000000..584ba55881
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewThumbnail.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewThumbnail@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewThumbnail@2x.png
new file mode 100644
index 0000000000..fb7db93836
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-viewThumbnail@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomIn.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomIn.png
new file mode 100644
index 0000000000..513d081bc2
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomIn.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomIn@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomIn@2x.png
new file mode 100644
index 0000000000..d5d49d5ff1
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomIn@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomOut.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomOut.png
new file mode 100644
index 0000000000..156c26b941
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomOut.png
diff --git a/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomOut@2x.png b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomOut@2x.png
new file mode 100644
index 0000000000..959e1919d5
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/toolbarButton-zoomOut@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed-rtl.png b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed-rtl.png
new file mode 100644
index 0000000000..1c8b9f7010
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed-rtl.png
diff --git a/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed-rtl@2x.png b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed-rtl@2x.png
new file mode 100644
index 0000000000..84279368d9
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed-rtl@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed.png b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed.png
new file mode 100644
index 0000000000..06d4d37696
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed.png
diff --git a/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed@2x.png b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed@2x.png
new file mode 100644
index 0000000000..eec1e58c12
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/treeitem-collapsed@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/images/treeitem-expanded.png b/public/vendor/plugins/pdfjs/web/images/treeitem-expanded.png
new file mode 100644
index 0000000000..c8d557351c
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/treeitem-expanded.png
diff --git a/public/vendor/plugins/pdfjs/web/images/treeitem-expanded@2x.png b/public/vendor/plugins/pdfjs/web/images/treeitem-expanded@2x.png
new file mode 100644
index 0000000000..3b3b6103b3
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/images/treeitem-expanded@2x.png
diff --git a/public/vendor/plugins/pdfjs/web/viewer.css b/public/vendor/plugins/pdfjs/web/viewer.css
new file mode 100644
index 0000000000..da2cf65330
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/viewer.css
@@ -0,0 +1,2122 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+.textLayer {
+  position: absolute;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  overflow: hidden;
+  opacity: 0.2;
+  line-height: 1.0;
+}
+
+.textLayer > div {
+  color: transparent;
+  position: absolute;
+  white-space: pre;
+  cursor: text;
+  -webkit-transform-origin: 0% 0%;
+  -moz-transform-origin: 0% 0%;
+  -o-transform-origin: 0% 0%;
+  -ms-transform-origin: 0% 0%;
+  transform-origin: 0% 0%;
+}
+
+.textLayer .highlight {
+  margin: -1px;
+  padding: 1px;
+
+  background-color: rgb(180, 0, 170);
+  border-radius: 4px;
+}
+
+.textLayer .highlight.begin {
+  border-radius: 4px 0px 0px 4px;
+}
+
+.textLayer .highlight.end {
+  border-radius: 0px 4px 4px 0px;
+}
+
+.textLayer .highlight.middle {
+  border-radius: 0px;
+}
+
+.textLayer .highlight.selected {
+  background-color: rgb(0, 100, 0);
+}
+
+.textLayer ::selection { background: rgb(0,0,255); }
+.textLayer ::-moz-selection { background: rgb(0,0,255); }
+
+.textLayer .endOfContent {
+  display: block;
+  position: absolute;
+  left: 0px;
+  top: 100%;
+  right: 0px;
+  bottom: 0px;
+  z-index: -1;
+  cursor: default;
+  -webkit-user-select: none;
+  -ms-user-select: none;
+  -moz-user-select: none;
+}
+
+.textLayer .endOfContent.active {
+  top: 0px;
+}
+
+
+.annotationLayer section {
+  position: absolute;
+}
+
+.annotationLayer .linkAnnotation > a {
+  position: absolute;
+  font-size: 1em;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+}
+
+.annotationLayer .linkAnnotation > a /* -ms-a */  {
+  background: url("data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7") 0 0 repeat;
+}
+
+.annotationLayer .linkAnnotation > a:hover {
+  opacity: 0.2;
+  background: #ff0;
+  box-shadow: 0px 2px 10px #ff0;
+}
+
+.annotationLayer .textAnnotation img {
+  position: absolute;
+  cursor: pointer;
+}
+
+.annotationLayer .popupWrapper {
+  position: absolute;
+  width: 20em;
+}
+
+.annotationLayer .popup {
+  position: absolute;
+  z-index: 200;
+  max-width: 20em;
+  background-color: #FFFF99;
+  box-shadow: 0px 2px 5px #333;
+  border-radius: 2px;
+  padding: 0.6em;
+  margin-left: 5px;
+  cursor: pointer;
+  word-wrap: break-word;
+}
+
+.annotationLayer .popup h1 {
+  font-size: 1em;
+  border-bottom: 1px solid #000000;
+  padding-bottom: 0.2em;
+}
+
+.annotationLayer .popup p {
+  padding-top: 0.2em;
+}
+
+.annotationLayer .highlightAnnotation,
+.annotationLayer .underlineAnnotation,
+.annotationLayer .squigglyAnnotation,
+.annotationLayer .strikeoutAnnotation {
+  cursor: pointer;
+}
+
+.pdfViewer .canvasWrapper {
+  overflow: hidden;
+}
+
+.pdfViewer .page {
+  direction: ltr;
+  width: 816px;
+  height: 1056px;
+  margin: 1px auto -8px auto;
+  position: relative;
+  overflow: visible;
+  border: 9px solid transparent;
+  background-clip: content-box;
+  border-image: url(images/shadow.png) 9 9 repeat;
+  background-color: white;
+}
+
+.pdfViewer.removePageBorders .page {
+  margin: 0px auto 10px auto;
+  border: none;
+}
+
+.pdfViewer .page canvas {
+  margin: 0;
+  display: block;
+}
+
+.pdfViewer .page .loadingIcon {
+  position: absolute;
+  display: block;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  background: url('images/loading-icon.gif') center no-repeat;
+}
+
+.pdfPresentationMode:-webkit-full-screen .pdfViewer .page {
+  margin-bottom: 100%;
+  border: 0;
+}
+
+.pdfPresentationMode:-moz-full-screen .pdfViewer .page {
+  margin-bottom: 100%;
+  border: 0;
+}
+
+.pdfPresentationMode:-ms-fullscreen .pdfViewer .page {
+  margin-bottom: 100% !important;
+  border: 0;
+}
+
+.pdfPresentationMode:fullscreen .pdfViewer .page {
+  margin-bottom: 100%;
+  border: 0;
+}
+
+* {
+  padding: 0;
+  margin: 0;
+}
+
+html {
+  height: 100%;
+  /* Font size is needed to make the activity bar the correct size. */
+  font-size: 10px;
+}
+
+body {
+  height: 100%;
+  background-color: #404040;
+  background-image: url(images/texture.png);
+}
+
+body,
+input,
+button,
+select {
+  font: message-box;
+  outline: none;
+}
+
+.hidden {
+  display: none !important;
+}
+[hidden] {
+  display: none !important;
+}
+
+#viewerContainer.pdfPresentationMode:-webkit-full-screen {
+  top: 0px;
+  border-top: 2px solid transparent;
+  background-color: #000;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  cursor: none;
+  -webkit-user-select: none;
+}
+
+#viewerContainer.pdfPresentationMode:-moz-full-screen {
+  top: 0px;
+  border-top: 2px solid transparent;
+  background-color: #000;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  cursor: none;
+  -moz-user-select: none;
+}
+
+#viewerContainer.pdfPresentationMode:-ms-fullscreen {
+  top: 0px !important;
+  border-top: 2px solid transparent;
+  width: 100%;
+  height: 100%;
+  overflow: hidden !important;
+  cursor: none;
+  -ms-user-select: none;
+}
+
+#viewerContainer.pdfPresentationMode:-ms-fullscreen::-ms-backdrop {
+  background-color: #000;
+}
+
+#viewerContainer.pdfPresentationMode:fullscreen {
+  top: 0px;
+  border-top: 2px solid transparent;
+  background-color: #000;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  cursor: none;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+}
+
+.pdfPresentationMode:-webkit-full-screen a:not(.internalLink) {
+  display: none;
+}
+
+.pdfPresentationMode:-moz-full-screen a:not(.internalLink) {
+  display: none;
+}
+
+.pdfPresentationMode:-ms-fullscreen a:not(.internalLink) {
+  display: none !important;
+}
+
+.pdfPresentationMode:fullscreen a:not(.internalLink) {
+  display: none;
+}
+
+.pdfPresentationMode:-webkit-full-screen .textLayer > div {
+  cursor: none;
+}
+
+.pdfPresentationMode:-moz-full-screen .textLayer > div {
+  cursor: none;
+}
+
+.pdfPresentationMode:-ms-fullscreen .textLayer > div {
+  cursor: none;
+}
+
+.pdfPresentationMode:fullscreen .textLayer > div {
+  cursor: none;
+}
+
+.pdfPresentationMode.pdfPresentationModeControls > *,
+.pdfPresentationMode.pdfPresentationModeControls .textLayer > div {
+  cursor: default;
+}
+
+/* outer/inner center provides horizontal center */
+.outerCenter {
+  pointer-events: none;
+  position: relative;
+}
+html[dir='ltr'] .outerCenter {
+  float: right;
+  right: 50%;
+}
+html[dir='rtl'] .outerCenter {
+  float: left;
+  left: 50%;
+}
+.innerCenter {
+  pointer-events: auto;
+  position: relative;
+}
+html[dir='ltr'] .innerCenter {
+  float: right;
+  right: -50%;
+}
+html[dir='rtl'] .innerCenter {
+  float: left;
+  left: -50%;
+}
+
+#outerContainer {
+  width: 100%;
+  height: 100%;
+  position: relative;
+}
+
+#sidebarContainer {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  width: 200px;
+  visibility: hidden;
+  -webkit-transition-duration: 200ms;
+  -webkit-transition-timing-function: ease;
+  transition-duration: 200ms;
+  transition-timing-function: ease;
+
+}
+html[dir='ltr'] #sidebarContainer {
+  -webkit-transition-property: left;
+  transition-property: left;
+  left: -200px;
+}
+html[dir='rtl'] #sidebarContainer {
+  -webkit-transition-property: right;
+  transition-property: right;
+  right: -200px;
+}
+
+#outerContainer.sidebarMoving > #sidebarContainer,
+#outerContainer.sidebarOpen > #sidebarContainer {
+  visibility: visible;
+}
+html[dir='ltr'] #outerContainer.sidebarOpen > #sidebarContainer {
+  left: 0px;
+}
+html[dir='rtl'] #outerContainer.sidebarOpen > #sidebarContainer {
+  right: 0px;
+}
+
+#mainContainer {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  min-width: 320px;
+  -webkit-transition-duration: 200ms;
+  -webkit-transition-timing-function: ease;
+  transition-duration: 200ms;
+  transition-timing-function: ease;
+}
+html[dir='ltr'] #outerContainer.sidebarOpen > #mainContainer {
+  -webkit-transition-property: left;
+  transition-property: left;
+  left: 200px;
+}
+html[dir='rtl'] #outerContainer.sidebarOpen > #mainContainer {
+  -webkit-transition-property: right;
+  transition-property: right;
+  right: 200px;
+}
+
+#sidebarContent {
+  top: 32px;
+  bottom: 0;
+  overflow: auto;
+  -webkit-overflow-scrolling: touch;
+  position: absolute;
+  width: 200px;
+  background-color: hsla(0,0%,0%,.1);
+}
+html[dir='ltr'] #sidebarContent {
+  left: 0;
+  box-shadow: inset -1px 0 0 hsla(0,0%,0%,.25);
+}
+html[dir='rtl'] #sidebarContent {
+  right: 0;
+  box-shadow: inset 1px 0 0 hsla(0,0%,0%,.25);
+}
+
+#viewerContainer {
+  overflow: auto;
+  -webkit-overflow-scrolling: touch;
+  position: absolute;
+  top: 32px;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  outline: none;
+}
+html[dir='ltr'] #viewerContainer {
+  box-shadow: inset 1px 0 0 hsla(0,0%,100%,.05);
+}
+html[dir='rtl'] #viewerContainer {
+  box-shadow: inset -1px 0 0 hsla(0,0%,100%,.05);
+}
+
+.toolbar {
+  position: relative;
+  left: 0;
+  right: 0;
+  z-index: 9999;
+  cursor: default;
+}
+
+#toolbarContainer {
+  width: 100%;
+}
+
+#toolbarSidebar {
+  width: 200px;
+  height: 32px;
+  background-color: #424242; /* fallback */
+  background-image: url(images/texture.png),
+                    linear-gradient(hsla(0,0%,30%,.99), hsla(0,0%,25%,.95));
+}
+html[dir='ltr'] #toolbarSidebar {
+  box-shadow: inset -1px 0 0 rgba(0, 0, 0, 0.25),
+              inset 0 -1px 0 hsla(0,0%,100%,.05),
+              0 1px 0 hsla(0,0%,0%,.15),
+              0 0 1px hsla(0,0%,0%,.1);
+}
+html[dir='rtl'] #toolbarSidebar {
+  box-shadow: inset 1px 0 0 rgba(0, 0, 0, 0.25),
+              inset 0 1px 0 hsla(0,0%,100%,.05),
+              0 1px 0 hsla(0,0%,0%,.15),
+              0 0 1px hsla(0,0%,0%,.1);
+}
+
+#toolbarContainer, .findbar, .secondaryToolbar {
+  position: relative;
+  height: 32px;
+  background-color: #474747; /* fallback */
+  background-image: url(images/texture.png),
+                    linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
+}
+html[dir='ltr'] #toolbarContainer, .findbar, .secondaryToolbar {
+  box-shadow: inset 1px 0 0 hsla(0,0%,100%,.08),
+              inset 0 1px 1px hsla(0,0%,0%,.15),
+              inset 0 -1px 0 hsla(0,0%,100%,.05),
+              0 1px 0 hsla(0,0%,0%,.15),
+              0 1px 1px hsla(0,0%,0%,.1);
+}
+html[dir='rtl'] #toolbarContainer, .findbar, .secondaryToolbar {
+  box-shadow: inset -1px 0 0 hsla(0,0%,100%,.08),
+              inset 0 1px 1px hsla(0,0%,0%,.15),
+              inset 0 -1px 0 hsla(0,0%,100%,.05),
+              0 1px 0 hsla(0,0%,0%,.15),
+              0 1px 1px hsla(0,0%,0%,.1);
+}
+
+#toolbarViewer {
+  height: 32px;
+}
+
+#loadingBar {
+  position: relative;
+  width: 100%;
+  height: 4px;
+  background-color: #333;
+  border-bottom: 1px solid #333;
+}
+
+#loadingBar .progress {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 0%;
+  height: 100%;
+  background-color: #ddd;
+  overflow: hidden;
+  -webkit-transition: width 200ms;
+  transition: width 200ms;
+}
+
+@-webkit-keyframes progressIndeterminate {
+  0% { left: -142px; }
+  100% { left: 0; }
+}
+
+@keyframes progressIndeterminate {
+  0% { left: -142px; }
+  100% { left: 0; }
+}
+
+#loadingBar .progress.indeterminate {
+  background-color: #999;
+  -webkit-transition: none;
+  transition: none;
+}
+
+#loadingBar .progress.indeterminate .glimmer {
+  position: absolute;
+  top: 0;
+  left: 0;
+  height: 100%;
+  width: calc(100% + 150px);
+
+  background: repeating-linear-gradient(135deg,
+                                        #bbb 0, #999 5px,
+                                        #999 45px, #ddd 55px,
+                                        #ddd 95px, #bbb 100px);
+
+  -webkit-animation: progressIndeterminate 950ms linear infinite;
+  animation: progressIndeterminate 950ms linear infinite;
+}
+
+.findbar, .secondaryToolbar {
+  top: 32px;
+  position: absolute;
+  z-index: 10000;
+  height: 32px;
+
+  min-width: 16px;
+  padding: 0px 6px 0px 6px;
+  margin: 4px 2px 4px 2px;
+  color: hsl(0,0%,85%);
+  font-size: 12px;
+  line-height: 14px;
+  text-align: left;
+  cursor: default;
+}
+
+html[dir='ltr'] .findbar {
+  left: 68px;
+}
+
+html[dir='rtl'] .findbar {
+  right: 68px;
+}
+
+.findbar label {
+  -webkit-user-select: none;
+  -moz-user-select: none;
+}
+
+#findInput[data-status="pending"] {
+  background-image: url(images/loading-small.png);
+  background-repeat: no-repeat;
+  background-position: right;
+}
+html[dir='rtl'] #findInput[data-status="pending"] {
+  background-position: left;
+}
+
+.secondaryToolbar {
+  padding: 6px;
+  height: auto;
+  z-index: 30000;
+}
+html[dir='ltr'] .secondaryToolbar {
+  right: 4px;
+}
+html[dir='rtl'] .secondaryToolbar {
+  left: 4px;
+}
+
+#secondaryToolbarButtonContainer {
+  max-width: 200px;
+  max-height: 400px;
+  overflow-y: auto;
+  -webkit-overflow-scrolling: touch;
+  margin-bottom: -4px;
+}
+
+.doorHanger,
+.doorHangerRight {
+  border: 1px solid hsla(0,0%,0%,.5);
+  border-radius: 2px;
+  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
+}
+.doorHanger:after, .doorHanger:before,
+.doorHangerRight:after, .doorHangerRight:before {
+  bottom: 100%;
+  border: solid transparent;
+  content: " ";
+  height: 0;
+  width: 0;
+  position: absolute;
+  pointer-events: none;
+}
+.doorHanger:after,
+.doorHangerRight:after {
+  border-bottom-color: hsla(0,0%,32%,.99);
+  border-width: 8px;
+}
+.doorHanger:before,
+.doorHangerRight:before {
+  border-bottom-color: hsla(0,0%,0%,.5);
+  border-width: 9px;
+}
+
+html[dir='ltr'] .doorHanger:after,
+html[dir='rtl'] .doorHangerRight:after {
+  left: 13px;
+  margin-left: -8px;
+}
+
+html[dir='ltr'] .doorHanger:before,
+html[dir='rtl'] .doorHangerRight:before {
+  left: 13px;
+  margin-left: -9px;
+}
+
+html[dir='rtl'] .doorHanger:after,
+html[dir='ltr'] .doorHangerRight:after {
+  right: 13px;
+  margin-right: -8px;
+}
+
+html[dir='rtl'] .doorHanger:before,
+html[dir='ltr'] .doorHangerRight:before {
+  right: 13px;
+  margin-right: -9px;
+}
+
+#findResultsCount {
+  background-color: hsl(0, 0%, 85%);
+  color: hsl(0, 0%, 32%);
+  text-align: center;
+  padding: 3px 4px;
+}
+
+#findMsg {
+  font-style: italic;
+  color: #A6B7D0;
+}
+
+#findInput.notFound {
+  background-color: rgb(255, 102, 102);
+}
+
+html[dir='ltr'] #toolbarViewerLeft {
+  margin-left: -1px;
+}
+html[dir='rtl'] #toolbarViewerRight {
+  margin-right: -1px;
+}
+
+html[dir='ltr'] #toolbarViewerLeft,
+html[dir='rtl'] #toolbarViewerRight {
+  position: absolute;
+  top: 0;
+  left: 0;
+}
+html[dir='ltr'] #toolbarViewerRight,
+html[dir='rtl'] #toolbarViewerLeft {
+  position: absolute;
+  top: 0;
+  right: 0;
+}
+html[dir='ltr'] #toolbarViewerLeft > *,
+html[dir='ltr'] #toolbarViewerMiddle > *,
+html[dir='ltr'] #toolbarViewerRight > *,
+html[dir='ltr'] .findbar > * {
+  position: relative;
+  float: left;
+}
+html[dir='rtl'] #toolbarViewerLeft > *,
+html[dir='rtl'] #toolbarViewerMiddle > *,
+html[dir='rtl'] #toolbarViewerRight > *,
+html[dir='rtl'] .findbar > * {
+  position: relative;
+  float: right;
+}
+
+html[dir='ltr'] .splitToolbarButton {
+  margin: 3px 2px 4px 0;
+  display: inline-block;
+}
+html[dir='rtl'] .splitToolbarButton {
+  margin: 3px 0 4px 2px;
+  display: inline-block;
+}
+html[dir='ltr'] .splitToolbarButton > .toolbarButton {
+  border-radius: 0;
+  float: left;
+}
+html[dir='rtl'] .splitToolbarButton > .toolbarButton {
+  border-radius: 0;
+  float: right;
+}
+
+.toolbarButton,
+.secondaryToolbarButton,
+.overlayButton {
+  border: 0 none;
+  background: none;
+  width: 32px;
+  height: 25px;
+}
+
+.toolbarButton > span {
+  display: inline-block;
+  width: 0;
+  height: 0;
+  overflow: hidden;
+}
+
+.toolbarButton[disabled],
+.secondaryToolbarButton[disabled],
+.overlayButton[disabled] {
+  opacity: .5;
+}
+
+.toolbarButton.group {
+  margin-right: 0;
+}
+
+.splitToolbarButton.toggled .toolbarButton {
+  margin: 0;
+}
+
+.splitToolbarButton:hover > .toolbarButton,
+.splitToolbarButton:focus > .toolbarButton,
+.splitToolbarButton.toggled > .toolbarButton,
+.toolbarButton.textButton {
+  background-color: hsla(0,0%,0%,.12);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-clip: padding-box;
+  border: 1px solid hsla(0,0%,0%,.35);
+  border-color: hsla(0,0%,0%,.32) hsla(0,0%,0%,.38) hsla(0,0%,0%,.42);
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
+              0 0 1px hsla(0,0%,100%,.15) inset,
+              0 1px 0 hsla(0,0%,100%,.05);
+  -webkit-transition-property: background-color, border-color, box-shadow;
+  -webkit-transition-duration: 150ms;
+  -webkit-transition-timing-function: ease;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 150ms;
+  transition-timing-function: ease;
+
+}
+.splitToolbarButton > .toolbarButton:hover,
+.splitToolbarButton > .toolbarButton:focus,
+.dropdownToolbarButton:hover,
+.overlayButton:hover,
+.overlayButton:focus,
+.toolbarButton.textButton:hover,
+.toolbarButton.textButton:focus {
+  background-color: hsla(0,0%,0%,.2);
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
+              0 0 1px hsla(0,0%,100%,.15) inset,
+              0 0 1px hsla(0,0%,0%,.05);
+  z-index: 199;
+}
+.splitToolbarButton > .toolbarButton {
+  position: relative;
+}
+html[dir='ltr'] .splitToolbarButton > .toolbarButton:first-child,
+html[dir='rtl'] .splitToolbarButton > .toolbarButton:last-child {
+  position: relative;
+  margin: 0;
+  margin-right: -1px;
+  border-top-left-radius: 2px;
+  border-bottom-left-radius: 2px;
+  border-right-color: transparent;
+}
+html[dir='ltr'] .splitToolbarButton > .toolbarButton:last-child,
+html[dir='rtl'] .splitToolbarButton > .toolbarButton:first-child {
+  position: relative;
+  margin: 0;
+  margin-left: -1px;
+  border-top-right-radius: 2px;
+  border-bottom-right-radius: 2px;
+  border-left-color: transparent;
+}
+.splitToolbarButtonSeparator {
+  padding: 8px 0;
+  width: 1px;
+  background-color: hsla(0,0%,0%,.5);
+  z-index: 99;
+  box-shadow: 0 0 0 1px hsla(0,0%,100%,.08);
+  display: inline-block;
+  margin: 5px 0;
+}
+html[dir='ltr'] .splitToolbarButtonSeparator {
+  float: left;
+}
+html[dir='rtl'] .splitToolbarButtonSeparator {
+  float: right;
+}
+.splitToolbarButton:hover > .splitToolbarButtonSeparator,
+.splitToolbarButton.toggled > .splitToolbarButtonSeparator {
+  padding: 12px 0;
+  margin: 1px 0;
+  box-shadow: 0 0 0 1px hsla(0,0%,100%,.03);
+  -webkit-transition-property: padding;
+  -webkit-transition-duration: 10ms;
+  -webkit-transition-timing-function: ease;
+  transition-property: padding;
+  transition-duration: 10ms;
+  transition-timing-function: ease;
+}
+
+.toolbarButton,
+.dropdownToolbarButton,
+.secondaryToolbarButton,
+.overlayButton {
+  min-width: 16px;
+  padding: 2px 6px 0;
+  border: 1px solid transparent;
+  border-radius: 2px;
+  color: hsla(0,0%,100%,.8);
+  font-size: 12px;
+  line-height: 14px;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  /* Opera does not support user-select, use <... unselectable="on"> instead */
+  cursor: default;
+  -webkit-transition-property: background-color, border-color, box-shadow;
+  -webkit-transition-duration: 150ms;
+  -webkit-transition-timing-function: ease;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 150ms;
+  transition-timing-function: ease;
+}
+
+html[dir='ltr'] .toolbarButton,
+html[dir='ltr'] .overlayButton,
+html[dir='ltr'] .dropdownToolbarButton {
+  margin: 3px 2px 4px 0;
+}
+html[dir='rtl'] .toolbarButton,
+html[dir='rtl'] .overlayButton,
+html[dir='rtl'] .dropdownToolbarButton {
+  margin: 3px 0 4px 2px;
+}
+
+.toolbarButton:hover,
+.toolbarButton:focus,
+.dropdownToolbarButton,
+.overlayButton,
+.secondaryToolbarButton:hover,
+.secondaryToolbarButton:focus {
+  background-color: hsla(0,0%,0%,.12);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-clip: padding-box;
+  border: 1px solid hsla(0,0%,0%,.35);
+  border-color: hsla(0,0%,0%,.32) hsla(0,0%,0%,.38) hsla(0,0%,0%,.42);
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
+              0 0 1px hsla(0,0%,100%,.15) inset,
+              0 1px 0 hsla(0,0%,100%,.05);
+}
+
+.toolbarButton:hover:active,
+.overlayButton:hover:active,
+.dropdownToolbarButton:hover:active,
+.secondaryToolbarButton:hover:active {
+  background-color: hsla(0,0%,0%,.2);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  border-color: hsla(0,0%,0%,.35) hsla(0,0%,0%,.4) hsla(0,0%,0%,.45);
+  box-shadow: 0 1px 1px hsla(0,0%,0%,.1) inset,
+              0 0 1px hsla(0,0%,0%,.2) inset,
+              0 1px 0 hsla(0,0%,100%,.05);
+  -webkit-transition-property: background-color, border-color, box-shadow;
+  -webkit-transition-duration: 10ms;
+  -webkit-transition-timing-function: linear;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 10ms;
+  transition-timing-function: linear;
+}
+
+.toolbarButton.toggled,
+.splitToolbarButton.toggled > .toolbarButton.toggled,
+.secondaryToolbarButton.toggled {
+  background-color: hsla(0,0%,0%,.3);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  border-color: hsla(0,0%,0%,.4) hsla(0,0%,0%,.45) hsla(0,0%,0%,.5);
+  box-shadow: 0 1px 1px hsla(0,0%,0%,.1) inset,
+              0 0 1px hsla(0,0%,0%,.2) inset,
+              0 1px 0 hsla(0,0%,100%,.05);
+  -webkit-transition-property: background-color, border-color, box-shadow;
+  -webkit-transition-duration: 10ms;
+  -webkit-transition-timing-function: linear;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 10ms;
+  transition-timing-function: linear;
+}
+
+.toolbarButton.toggled:hover:active,
+.splitToolbarButton.toggled > .toolbarButton.toggled:hover:active,
+.secondaryToolbarButton.toggled:hover:active {
+  background-color: hsla(0,0%,0%,.4);
+  border-color: hsla(0,0%,0%,.4) hsla(0,0%,0%,.5) hsla(0,0%,0%,.55);
+  box-shadow: 0 1px 1px hsla(0,0%,0%,.2) inset,
+              0 0 1px hsla(0,0%,0%,.3) inset,
+              0 1px 0 hsla(0,0%,100%,.05);
+}
+
+.dropdownToolbarButton {
+  width: 120px;
+  max-width: 120px;
+  padding: 0;
+  overflow: hidden;
+  background: url(images/toolbarButton-menuArrows.png) no-repeat;
+}
+html[dir='ltr'] .dropdownToolbarButton {
+  background-position: 95%;
+}
+html[dir='rtl'] .dropdownToolbarButton {
+  background-position: 5%;
+}
+
+.dropdownToolbarButton > select {
+  min-width: 140px;
+  font-size: 12px;
+  color: hsl(0,0%,95%);
+  margin: 0;
+  padding: 3px 2px 2px;
+  border: none;
+  background: rgba(0,0,0,0); /* Opera does not support 'transparent' <select> background */
+}
+
+.dropdownToolbarButton > select > option {
+  background: hsl(0,0%,24%);
+}
+
+#customScaleOption {
+  display: none;
+}
+
+#pageWidthOption {
+  border-bottom: 1px rgba(255, 255, 255, .5) solid;
+}
+
+html[dir='ltr'] .splitToolbarButton:first-child,
+html[dir='ltr'] .toolbarButton:first-child,
+html[dir='rtl'] .splitToolbarButton:last-child,
+html[dir='rtl'] .toolbarButton:last-child {
+  margin-left: 4px;
+}
+html[dir='ltr'] .splitToolbarButton:last-child,
+html[dir='ltr'] .toolbarButton:last-child,
+html[dir='rtl'] .splitToolbarButton:first-child,
+html[dir='rtl'] .toolbarButton:first-child {
+  margin-right: 4px;
+}
+
+.toolbarButtonSpacer {
+  width: 30px;
+  display: inline-block;
+  height: 1px;
+}
+
+.toolbarButtonFlexibleSpacer {
+  -webkit-box-flex: 1;
+  -moz-box-flex: 1;
+  min-width: 30px;
+}
+
+html[dir='ltr'] #findPrevious {
+  margin-left: 3px;
+}
+html[dir='ltr'] #findNext {
+  margin-right: 3px;
+}
+
+html[dir='rtl'] #findPrevious {
+  margin-right: 3px;
+}
+html[dir='rtl'] #findNext {
+  margin-left: 3px;
+}
+
+.toolbarButton::before,
+.secondaryToolbarButton::before {
+  /* All matching images have a size of 16x16
+   * All relevant containers have a size of 32x25 */
+  position: absolute;
+  display: inline-block;
+  top: 4px;
+  left: 7px;
+}
+
+html[dir="ltr"] .secondaryToolbarButton::before {
+  left: 4px;
+}
+html[dir="rtl"] .secondaryToolbarButton::before {
+  right: 4px;
+}
+
+html[dir='ltr'] .toolbarButton#sidebarToggle::before {
+  content: url(images/toolbarButton-sidebarToggle.png);
+}
+html[dir='rtl'] .toolbarButton#sidebarToggle::before {
+  content: url(images/toolbarButton-sidebarToggle-rtl.png);
+}
+
+html[dir='ltr'] .toolbarButton#secondaryToolbarToggle::before {
+  content: url(images/toolbarButton-secondaryToolbarToggle.png);
+}
+html[dir='rtl'] .toolbarButton#secondaryToolbarToggle::before {
+  content: url(images/toolbarButton-secondaryToolbarToggle-rtl.png);
+}
+
+html[dir='ltr'] .toolbarButton.findPrevious::before {
+  content: url(images/findbarButton-previous.png);
+}
+html[dir='rtl'] .toolbarButton.findPrevious::before {
+  content: url(images/findbarButton-previous-rtl.png);
+}
+
+html[dir='ltr'] .toolbarButton.findNext::before {
+  content: url(images/findbarButton-next.png);
+}
+html[dir='rtl'] .toolbarButton.findNext::before {
+  content: url(images/findbarButton-next-rtl.png);
+}
+
+html[dir='ltr'] .toolbarButton.pageUp::before {
+  content: url(images/toolbarButton-pageUp.png);
+}
+html[dir='rtl'] .toolbarButton.pageUp::before {
+  content: url(images/toolbarButton-pageUp-rtl.png);
+}
+
+html[dir='ltr'] .toolbarButton.pageDown::before {
+  content: url(images/toolbarButton-pageDown.png);
+}
+html[dir='rtl'] .toolbarButton.pageDown::before {
+  content: url(images/toolbarButton-pageDown-rtl.png);
+}
+
+.toolbarButton.zoomOut::before {
+  content: url(images/toolbarButton-zoomOut.png);
+}
+
+.toolbarButton.zoomIn::before {
+  content: url(images/toolbarButton-zoomIn.png);
+}
+
+.toolbarButton.presentationMode::before,
+.secondaryToolbarButton.presentationMode::before {
+  content: url(images/toolbarButton-presentationMode.png);
+}
+
+.toolbarButton.print::before,
+.secondaryToolbarButton.print::before {
+  content: url(images/toolbarButton-print.png);
+}
+
+.toolbarButton.openFile::before,
+.secondaryToolbarButton.openFile::before {
+  content: url(images/toolbarButton-openFile.png);
+}
+
+.toolbarButton.download::before,
+.secondaryToolbarButton.download::before {
+  content: url(images/toolbarButton-download.png);
+}
+
+.toolbarButton.bookmark,
+.secondaryToolbarButton.bookmark {
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+  outline: none;
+  padding-top: 4px;
+  text-decoration: none;
+}
+.secondaryToolbarButton.bookmark {
+  padding-top: 5px;
+}
+
+.bookmark[href='#'] {
+  opacity: .5;
+  pointer-events: none;
+}
+
+.toolbarButton.bookmark::before,
+.secondaryToolbarButton.bookmark::before {
+  content: url(images/toolbarButton-bookmark.png);
+}
+
+#viewThumbnail.toolbarButton::before {
+  content: url(images/toolbarButton-viewThumbnail.png);
+}
+
+html[dir="ltr"] #viewOutline.toolbarButton::before {
+  content: url(images/toolbarButton-viewOutline.png);
+}
+html[dir="rtl"] #viewOutline.toolbarButton::before {
+  content: url(images/toolbarButton-viewOutline-rtl.png);
+}
+
+#viewAttachments.toolbarButton::before {
+  content: url(images/toolbarButton-viewAttachments.png);
+}
+
+#viewFind.toolbarButton::before {
+  content: url(images/toolbarButton-search.png);
+}
+
+.secondaryToolbarButton {
+  position: relative;
+  margin: 0 0 4px 0;
+  padding: 3px 0 1px 0;
+  height: auto;
+  min-height: 25px;
+  width: auto;
+  min-width: 100%;
+  white-space: normal;
+}
+html[dir="ltr"] .secondaryToolbarButton {
+  padding-left: 24px;
+  text-align: left;
+}
+html[dir="rtl"] .secondaryToolbarButton {
+  padding-right: 24px;
+  text-align: right;
+}
+html[dir="ltr"] .secondaryToolbarButton.bookmark {
+  padding-left: 27px;
+}
+html[dir="rtl"] .secondaryToolbarButton.bookmark {
+  padding-right: 27px;
+}
+
+html[dir="ltr"] .secondaryToolbarButton > span {
+  padding-right: 4px;
+}
+html[dir="rtl"] .secondaryToolbarButton > span {
+  padding-left: 4px;
+}
+
+.secondaryToolbarButton.firstPage::before {
+  content: url(images/secondaryToolbarButton-firstPage.png);
+}
+
+.secondaryToolbarButton.lastPage::before {
+  content: url(images/secondaryToolbarButton-lastPage.png);
+}
+
+.secondaryToolbarButton.rotateCcw::before {
+  content: url(images/secondaryToolbarButton-rotateCcw.png);
+}
+
+.secondaryToolbarButton.rotateCw::before {
+  content: url(images/secondaryToolbarButton-rotateCw.png);
+}
+
+.secondaryToolbarButton.handTool::before {
+  content: url(images/secondaryToolbarButton-handTool.png);
+}
+
+.secondaryToolbarButton.documentProperties::before {
+  content: url(images/secondaryToolbarButton-documentProperties.png);
+}
+
+.verticalToolbarSeparator {
+  display: block;
+  padding: 8px 0;
+  margin: 8px 4px;
+  width: 1px;
+  background-color: hsla(0,0%,0%,.5);
+  box-shadow: 0 0 0 1px hsla(0,0%,100%,.08);
+}
+html[dir='ltr'] .verticalToolbarSeparator {
+  margin-left: 2px;
+}
+html[dir='rtl'] .verticalToolbarSeparator {
+  margin-right: 2px;
+}
+
+.horizontalToolbarSeparator {
+  display: block;
+  margin: 0 0 4px 0;
+  height: 1px;
+  width: 100%;
+  background-color: hsla(0,0%,0%,.5);
+  box-shadow: 0 0 0 1px hsla(0,0%,100%,.08);
+}
+
+.toolbarField {
+  padding: 3px 6px;
+  margin: 4px 0 4px 0;
+  border: 1px solid transparent;
+  border-radius: 2px;
+  background-color: hsla(0,0%,100%,.09);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-clip: padding-box;
+  border: 1px solid hsla(0,0%,0%,.35);
+  border-color: hsla(0,0%,0%,.32) hsla(0,0%,0%,.38) hsla(0,0%,0%,.42);
+  box-shadow: 0 1px 0 hsla(0,0%,0%,.05) inset,
+              0 1px 0 hsla(0,0%,100%,.05);
+  color: hsl(0,0%,95%);
+  font-size: 12px;
+  line-height: 14px;
+  outline-style: none;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 150ms;
+  transition-timing-function: ease;
+}
+
+.toolbarField[type=checkbox] {
+  display: inline-block;
+  margin: 8px 0px;
+}
+
+.toolbarField.pageNumber {
+  -moz-appearance: textfield; /* hides the spinner in moz */
+  min-width: 16px;
+  text-align: right;
+  width: 40px;
+}
+
+.toolbarField.pageNumber.visiblePageIsLoading {
+  background-image: url(images/loading-small.png);
+  background-repeat: no-repeat;
+  background-position: 1px;
+}
+
+.toolbarField.pageNumber::-webkit-inner-spin-button,
+.toolbarField.pageNumber::-webkit-outer-spin-button {
+    -webkit-appearance: none;
+    margin: 0;
+}
+
+.toolbarField:hover {
+  background-color: hsla(0,0%,100%,.11);
+  border-color: hsla(0,0%,0%,.4) hsla(0,0%,0%,.43) hsla(0,0%,0%,.45);
+}
+
+.toolbarField:focus {
+  background-color: hsla(0,0%,100%,.15);
+  border-color: hsla(204,100%,65%,.8) hsla(204,100%,65%,.85) hsla(204,100%,65%,.9);
+}
+
+.toolbarLabel {
+  min-width: 16px;
+  padding: 3px 6px 3px 2px;
+  margin: 4px 2px 4px 0;
+  border: 1px solid transparent;
+  border-radius: 2px;
+  color: hsl(0,0%,85%);
+  font-size: 12px;
+  line-height: 14px;
+  text-align: left;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  cursor: default;
+}
+
+#thumbnailView {
+  position: absolute;
+  width: 120px;
+  top: 0;
+  bottom: 0;
+  padding: 10px 40px 0;
+  overflow: auto;
+  -webkit-overflow-scrolling: touch;
+}
+
+.thumbnail {
+  float: left;
+  margin-bottom: 5px;
+}
+
+#thumbnailView > a:last-of-type > .thumbnail {
+  margin-bottom: 10px;
+}
+
+#thumbnailView > a:last-of-type > .thumbnail:not([data-loaded]) {
+  margin-bottom: 9px;
+}
+
+.thumbnail:not([data-loaded]) {
+  border: 1px dashed rgba(255, 255, 255, 0.5);
+  margin: -1px -1px 4px -1px;
+}
+
+.thumbnailImage {
+  border: 1px solid transparent;
+  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.3);
+  opacity: 0.8;
+  z-index: 99;
+  background-color: white;
+  background-clip: content-box;
+}
+
+.thumbnailSelectionRing {
+  border-radius: 2px;
+  padding: 7px;
+}
+
+a:focus > .thumbnail > .thumbnailSelectionRing > .thumbnailImage,
+.thumbnail:hover > .thumbnailSelectionRing > .thumbnailImage {
+  opacity: .9;
+}
+
+a:focus > .thumbnail > .thumbnailSelectionRing,
+.thumbnail:hover > .thumbnailSelectionRing {
+  background-color: hsla(0,0%,100%,.15);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-clip: padding-box;
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
+              0 0 1px hsla(0,0%,100%,.2) inset,
+              0 0 1px hsla(0,0%,0%,.2);
+  color: hsla(0,0%,100%,.9);
+}
+
+.thumbnail.selected > .thumbnailSelectionRing > .thumbnailImage {
+  box-shadow: 0 0 0 1px hsla(0,0%,0%,.5);
+  opacity: 1;
+}
+
+.thumbnail.selected > .thumbnailSelectionRing {
+  background-color: hsla(0,0%,100%,.3);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-clip: padding-box;
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
+              0 0 1px hsla(0,0%,100%,.1) inset,
+              0 0 1px hsla(0,0%,0%,.2);
+  color: hsla(0,0%,100%,1);
+}
+
+#outlineView,
+#attachmentsView {
+  position: absolute;
+  width: 192px;
+  top: 0;
+  bottom: 0;
+  overflow: auto;
+  -webkit-overflow-scrolling: touch;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+}
+
+#outlineView {
+  padding: 4px 4px 0;
+}
+#attachmentsView {
+  padding: 3px 4px 0;
+}
+
+html[dir='ltr'] .outlineWithDeepNesting > .outlineItem,
+html[dir='ltr'] .outlineItem > .outlineItems {
+  margin-left: 20px;
+}
+
+html[dir='rtl'] .outlineWithDeepNesting > .outlineItem,
+html[dir='rtl'] .outlineItem > .outlineItems {
+  margin-right: 20px;
+}
+
+.outlineItem > a,
+.attachmentsItem > button {
+  text-decoration: none;
+  display: inline-block;
+  min-width: 95%;
+  min-width: calc(100% - 4px); /* Subtract the right padding (left, in RTL mode)
+                                  of the container. */
+  height: auto;
+  margin-bottom: 1px;
+  border-radius: 2px;
+  color: hsla(0,0%,100%,.8);
+  font-size: 13px;
+  line-height: 15px;
+  -moz-user-select: none;
+  white-space: normal;
+}
+
+.attachmentsItem > button {
+  border: 0 none;
+  background: none;
+  cursor: pointer;
+  width: 100%;
+}
+
+html[dir='ltr'] .outlineItem > a {
+  padding: 2px 0 5px 4px;
+}
+html[dir='ltr'] .attachmentsItem > button {
+  padding: 2px 0 3px 7px;
+  text-align: left;
+}
+
+html[dir='rtl'] .outlineItem > a {
+  padding: 2px 4px 5px 0;
+}
+html[dir='rtl'] .attachmentsItem > button {
+  padding: 2px 7px 3px 0;
+  text-align: right;
+}
+
+.outlineItemToggler {
+  position: relative;
+  height: 0;
+  width: 0;
+  color: hsla(0,0%,100%,.5);
+}
+.outlineItemToggler::before {
+  content: url(images/treeitem-expanded.png);
+  display: inline-block;
+  position: absolute;
+}
+html[dir='ltr'] .outlineItemToggler.outlineItemsHidden::before {
+  content: url(images/treeitem-collapsed.png);
+}
+html[dir='rtl'] .outlineItemToggler.outlineItemsHidden::before {
+  content: url(images/treeitem-collapsed-rtl.png);
+}
+.outlineItemToggler.outlineItemsHidden ~ .outlineItems {
+  display: none;
+}
+html[dir='ltr'] .outlineItemToggler {
+  float: left;
+}
+html[dir='rtl'] .outlineItemToggler {
+  float: right;
+}
+html[dir='ltr'] .outlineItemToggler::before {
+  right: 4px;
+}
+html[dir='rtl'] .outlineItemToggler::before {
+  left: 4px;
+}
+
+.outlineItemToggler:hover,
+.outlineItemToggler:hover + a,
+.outlineItemToggler:hover ~ .outlineItems,
+.outlineItem > a:hover,
+.attachmentsItem > button:hover {
+  background-color: hsla(0,0%,100%,.02);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-clip: padding-box;
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
+              0 0 1px hsla(0,0%,100%,.2) inset,
+              0 0 1px hsla(0,0%,0%,.2);
+  border-radius: 2px;
+  color: hsla(0,0%,100%,.9);
+}
+
+.outlineItem.selected {
+  background-color: hsla(0,0%,100%,.08);
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-clip: padding-box;
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
+              0 0 1px hsla(0,0%,100%,.1) inset,
+              0 0 1px hsla(0,0%,0%,.2);
+  color: hsla(0,0%,100%,1);
+}
+
+.noResults {
+  font-size: 12px;
+  color: hsla(0,0%,100%,.8);
+  font-style: italic;
+  cursor: default;
+}
+
+/* TODO: file FF bug to support ::-moz-selection:window-inactive
+   so we can override the opaque grey background when the window is inactive;
+   see https://bugzilla.mozilla.org/show_bug.cgi?id=706209 */
+::selection { background: rgba(0,0,255,0.3); }
+::-moz-selection { background: rgba(0,0,255,0.3); }
+
+#errorWrapper {
+  background: none repeat scroll 0 0 #FF5555;
+  color: white;
+  left: 0;
+  position: absolute;
+  right: 0;
+  z-index: 1000;
+  padding: 3px;
+  font-size: 0.8em;
+}
+.loadingInProgress #errorWrapper {
+  top: 37px;
+}
+
+#errorMessageLeft {
+  float: left;
+}
+
+#errorMessageRight {
+  float: right;
+}
+
+#errorMoreInfo {
+  background-color: #FFFFFF;
+  color: black;
+  padding: 3px;
+  margin: 3px;
+  width: 98%;
+}
+
+.overlayButton {
+  width: auto;
+  margin: 3px 4px 2px 4px !important;
+  padding: 2px 6px 3px 6px;
+}
+
+#overlayContainer {
+  display: table;
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  background-color: hsla(0,0%,0%,.2);
+  z-index: 40000;
+}
+#overlayContainer > * {
+  overflow: auto;
+  -webkit-overflow-scrolling: touch;
+}
+
+#overlayContainer > .container {
+  display: table-cell;
+  vertical-align: middle;
+  text-align: center;
+}
+
+#overlayContainer > .container > .dialog {
+  display: inline-block;
+  padding: 15px;
+  border-spacing: 4px;
+  color: hsl(0,0%,85%);
+  font-size: 12px;
+  line-height: 14px;
+  background-color: #474747; /* fallback */
+  background-image: url(images/texture.png),
+                    linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
+  box-shadow: inset 1px 0 0 hsla(0,0%,100%,.08),
+              inset 0 1px 1px hsla(0,0%,0%,.15),
+              inset 0 -1px 0 hsla(0,0%,100%,.05),
+              0 1px 0 hsla(0,0%,0%,.15),
+              0 1px 1px hsla(0,0%,0%,.1);
+  border: 1px solid hsla(0,0%,0%,.5);
+  border-radius: 4px;
+  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
+}
+
+.dialog > .row {
+  display: table-row;
+}
+
+.dialog > .row > * {
+  display: table-cell;
+}
+
+.dialog .toolbarField {
+  margin: 5px 0;
+}
+
+.dialog .separator {
+  display: block;
+  margin: 4px 0 4px 0;
+  height: 1px;
+  width: 100%;
+  background-color: hsla(0,0%,0%,.5);
+  box-shadow: 0 0 0 1px hsla(0,0%,100%,.08);
+}
+
+.dialog .buttonRow {
+  text-align: center;
+  vertical-align: middle;
+}
+
+.dialog :link {
+  color: white;
+}
+
+#passwordOverlay > .dialog {
+  text-align: center;
+}
+#passwordOverlay .toolbarField {
+  width: 200px;
+}
+
+#documentPropertiesOverlay > .dialog {
+  text-align: left;
+}
+#documentPropertiesOverlay .row > * {
+  min-width: 100px;
+}
+html[dir='ltr'] #documentPropertiesOverlay .row > * {
+  text-align: left;
+}
+html[dir='rtl'] #documentPropertiesOverlay .row > * {
+  text-align: right;
+}
+#documentPropertiesOverlay .row > span {
+  width: 125px;
+  word-wrap: break-word;
+}
+#documentPropertiesOverlay .row > p {
+  max-width: 225px;
+  word-wrap: break-word;
+}
+#documentPropertiesOverlay .buttonRow {
+  margin-top: 10px;
+}
+
+.clearBoth {
+  clear: both;
+}
+
+.fileInput {
+  background: white;
+  color: black;
+  margin-top: 5px;
+  visibility: hidden;
+  position: fixed;
+  right: 0;
+  top: 0;
+}
+
+#PDFBug {
+  background: none repeat scroll 0 0 white;
+  border: 1px solid #666666;
+  position: fixed;
+  top: 32px;
+  right: 0;
+  bottom: 0;
+  font-size: 10px;
+  padding: 0;
+  width: 300px;
+}
+#PDFBug .controls {
+    background:#EEEEEE;
+    border-bottom: 1px solid #666666;
+    padding: 3px;
+}
+#PDFBug .panels {
+  bottom: 0;
+  left: 0;
+  overflow: auto;
+  -webkit-overflow-scrolling: touch;
+  position: absolute;
+  right: 0;
+  top: 27px;
+}
+#PDFBug button.active {
+  font-weight: bold;
+}
+.debuggerShowText {
+  background: none repeat scroll 0 0 yellow;
+  color: blue;
+}
+.debuggerHideText:hover {
+  background: none repeat scroll 0 0 yellow;
+}
+#PDFBug .stats {
+  font-family: courier;
+  font-size: 10px;
+  white-space: pre;
+}
+#PDFBug .stats .title {
+    font-weight: bold;
+}
+#PDFBug table {
+  font-size: 10px;
+}
+
+#viewer.textLayer-visible .textLayer {
+  opacity: 1.0;
+}
+
+#viewer.textLayer-visible .canvasWrapper {
+  background-color: rgb(128,255,128);
+}
+
+#viewer.textLayer-visible .canvasWrapper canvas {
+  mix-blend-mode: screen;
+}
+
+#viewer.textLayer-visible .textLayer > div {
+  background-color: rgba(255, 255, 0, 0.1);
+  color: black;
+  border: solid 1px rgba(255, 0, 0, 0.5);
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+
+#viewer.textLayer-hover .textLayer > div:hover {
+  background-color: white;
+  color: black;
+}
+
+#viewer.textLayer-shadow .textLayer > div {
+  background-color: rgba(255,255,255, .6);
+  color: black;
+}
+
+.grab-to-pan-grab {
+  cursor: url("images/grab.cur"), move !important;
+  cursor: -webkit-grab !important;
+  cursor: -moz-grab !important;
+  cursor: grab !important;
+}
+.grab-to-pan-grab *:not(input):not(textarea):not(button):not(select):not(:link) {
+  cursor: inherit !important;
+}
+.grab-to-pan-grab:active,
+.grab-to-pan-grabbing {
+  cursor: url("images/grabbing.cur"), move !important;
+  cursor: -webkit-grabbing !important;
+  cursor: -moz-grabbing !important;
+  cursor: grabbing !important;
+
+  position: fixed;
+  background: transparent;
+  display: block;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  overflow: hidden;
+  z-index: 50000; /* should be higher than anything else in PDF.js! */
+}
+
+@page {
+  margin: 0;
+}
+
+#printContainer {
+  display: none;
+}
+
+@media screen and (min-resolution: 2dppx) {
+  /* Rules for Retina screens */
+  .toolbarButton::before {
+    -webkit-transform: scale(0.5);
+    transform: scale(0.5);
+    top: -5px;
+  }
+
+  .secondaryToolbarButton::before {
+    -webkit-transform: scale(0.5);
+    transform: scale(0.5);
+    top: -4px;
+  }
+
+  html[dir='ltr'] .toolbarButton::before,
+  html[dir='rtl'] .toolbarButton::before {
+    left: -1px;
+  }
+
+  html[dir='ltr'] .secondaryToolbarButton::before {
+    left: -2px;
+  }
+  html[dir='rtl'] .secondaryToolbarButton::before {
+    left: 186px;
+  }
+
+  .toolbarField.pageNumber.visiblePageIsLoading,
+  #findInput[data-status="pending"] {
+    background-image: url(images/loading-small@2x.png);
+    background-size: 16px 17px;
+  }
+
+  .dropdownToolbarButton {
+    background: url(images/toolbarButton-menuArrows@2x.png) no-repeat;
+    background-size: 7px 16px;
+  }
+
+  html[dir='ltr'] .toolbarButton#sidebarToggle::before {
+    content: url(images/toolbarButton-sidebarToggle@2x.png);
+  }
+  html[dir='rtl'] .toolbarButton#sidebarToggle::before {
+    content: url(images/toolbarButton-sidebarToggle-rtl@2x.png);
+  }
+
+  html[dir='ltr'] .toolbarButton#secondaryToolbarToggle::before {
+    content: url(images/toolbarButton-secondaryToolbarToggle@2x.png);
+  }
+  html[dir='rtl'] .toolbarButton#secondaryToolbarToggle::before {
+    content: url(images/toolbarButton-secondaryToolbarToggle-rtl@2x.png);
+  }
+
+  html[dir='ltr'] .toolbarButton.findPrevious::before {
+    content: url(images/findbarButton-previous@2x.png);
+  }
+  html[dir='rtl'] .toolbarButton.findPrevious::before {
+    content: url(images/findbarButton-previous-rtl@2x.png);
+  }
+
+  html[dir='ltr'] .toolbarButton.findNext::before {
+    content: url(images/findbarButton-next@2x.png);
+  }
+  html[dir='rtl'] .toolbarButton.findNext::before {
+    content: url(images/findbarButton-next-rtl@2x.png);
+  }
+
+  html[dir='ltr'] .toolbarButton.pageUp::before {
+    content: url(images/toolbarButton-pageUp@2x.png);
+  }
+  html[dir='rtl'] .toolbarButton.pageUp::before {
+    content: url(images/toolbarButton-pageUp-rtl@2x.png);
+  }
+
+  html[dir='ltr'] .toolbarButton.pageDown::before {
+    content: url(images/toolbarButton-pageDown@2x.png);
+  }
+  html[dir='rtl'] .toolbarButton.pageDown::before {
+    content: url(images/toolbarButton-pageDown-rtl@2x.png);
+  }
+
+  .toolbarButton.zoomIn::before {
+    content: url(images/toolbarButton-zoomIn@2x.png);
+  }
+
+  .toolbarButton.zoomOut::before {
+    content: url(images/toolbarButton-zoomOut@2x.png);
+  }
+
+  .toolbarButton.presentationMode::before,
+  .secondaryToolbarButton.presentationMode::before {
+    content: url(images/toolbarButton-presentationMode@2x.png);
+  }
+
+  .toolbarButton.print::before,
+  .secondaryToolbarButton.print::before {
+    content: url(images/toolbarButton-print@2x.png);
+  }
+
+  .toolbarButton.openFile::before,
+  .secondaryToolbarButton.openFile::before {
+    content: url(images/toolbarButton-openFile@2x.png);
+  }
+
+  .toolbarButton.download::before,
+  .secondaryToolbarButton.download::before {
+    content: url(images/toolbarButton-download@2x.png);
+  }
+
+  .toolbarButton.bookmark::before,
+  .secondaryToolbarButton.bookmark::before {
+    content: url(images/toolbarButton-bookmark@2x.png);
+  }
+
+  #viewThumbnail.toolbarButton::before {
+    content: url(images/toolbarButton-viewThumbnail@2x.png);
+  }
+
+  html[dir="ltr"] #viewOutline.toolbarButton::before {
+    content: url(images/toolbarButton-viewOutline@2x.png);
+  }
+  html[dir="rtl"] #viewOutline.toolbarButton::before {
+    content: url(images/toolbarButton-viewOutline-rtl@2x.png);
+  }
+
+  #viewAttachments.toolbarButton::before {
+    content: url(images/toolbarButton-viewAttachments@2x.png);
+  }
+
+  #viewFind.toolbarButton::before {
+    content: url(images/toolbarButton-search@2x.png);
+  }
+
+  .secondaryToolbarButton.firstPage::before {
+    content: url(images/secondaryToolbarButton-firstPage@2x.png);
+  }
+
+  .secondaryToolbarButton.lastPage::before {
+    content: url(images/secondaryToolbarButton-lastPage@2x.png);
+  }
+
+  .secondaryToolbarButton.rotateCcw::before {
+    content: url(images/secondaryToolbarButton-rotateCcw@2x.png);
+  }
+
+  .secondaryToolbarButton.rotateCw::before {
+    content: url(images/secondaryToolbarButton-rotateCw@2x.png);
+  }
+
+  .secondaryToolbarButton.handTool::before {
+    content: url(images/secondaryToolbarButton-handTool@2x.png);
+  }
+
+  .secondaryToolbarButton.documentProperties::before {
+    content: url(images/secondaryToolbarButton-documentProperties@2x.png);
+  }
+
+  .outlineItemToggler::before {
+    -webkit-transform: scale(0.5);
+    transform: scale(0.5);
+    top: -1px;
+    content: url(images/treeitem-expanded@2x.png);
+  }
+  html[dir='ltr'] .outlineItemToggler.outlineItemsHidden::before {
+    content: url(images/treeitem-collapsed@2x.png);
+  }
+  html[dir='rtl'] .outlineItemToggler.outlineItemsHidden::before {
+    content: url(images/treeitem-collapsed-rtl@2x.png);
+  }
+  html[dir='ltr'] .outlineItemToggler::before {
+    right: 0;
+  }
+  html[dir='rtl'] .outlineItemToggler::before {
+    left: 0;
+  }
+}
+
+@media print {
+  /* General rules for printing. */
+  body {
+    background: transparent none;
+  }
+
+  /* Rules for browsers that don't support mozPrintCallback. */
+  #sidebarContainer, #secondaryToolbar, .toolbar, #loadingBox, #errorWrapper, .textLayer {
+    display: none;
+  }
+  #viewerContainer {
+    overflow: visible;
+  }
+
+  #mainContainer, #viewerContainer, .page, .page canvas {
+    position: static;
+    padding: 0;
+    margin: 0;
+  }
+
+  .page {
+    float: left;
+    display: none;
+    border: none;
+    box-shadow: none;
+    background-clip: content-box;
+    background-color: white;
+  }
+
+  .page[data-loaded] {
+    display: block;
+  }
+
+  .fileInput {
+    display: none;
+  }
+
+  /* Rules for browsers that support mozPrintCallback */
+  body[data-mozPrintCallback] #outerContainer {
+    display: none;
+  }
+  body[data-mozPrintCallback] #printContainer {
+    display: block;
+  }
+  /* wrapper around (scaled) print canvas elements */
+  #printContainer > div {
+    position: relative;
+    top: 0;
+    left: 0;
+    overflow: hidden;
+  }
+  #printContainer canvas {
+    display: block;
+  }
+}
+
+.visibleLargeView,
+.visibleMediumView,
+.visibleSmallView {
+  display: none;
+}
+
+@media all and (max-width: 960px) {
+  html[dir='ltr'] #outerContainer.sidebarMoving .outerCenter,
+  html[dir='ltr'] #outerContainer.sidebarOpen .outerCenter {
+    float: left;
+    left: 205px;
+  }
+  html[dir='rtl'] #outerContainer.sidebarMoving .outerCenter,
+  html[dir='rtl'] #outerContainer.sidebarOpen .outerCenter {
+    float: right;
+    right: 205px;
+  }
+}
+
+@media all and (max-width: 900px) {
+  .sidebarOpen .hiddenLargeView {
+    display: none;
+  }
+  .sidebarOpen .visibleLargeView {
+    display: inherit;
+  }
+}
+
+@media all and (max-width: 860px) {
+  .sidebarOpen .hiddenMediumView {
+    display: none;
+  }
+  .sidebarOpen .visibleMediumView {
+    display: inherit;
+  }
+}
+
+@media all and (max-width: 770px) {
+  #sidebarContainer {
+    top: 32px;
+    z-index: 100;
+  }
+  .loadingInProgress #sidebarContainer {
+    top: 37px;
+  }
+  #sidebarContent {
+    top: 32px;
+    background-color: hsla(0,0%,0%,.7);
+  }
+
+  html[dir='ltr'] #outerContainer.sidebarOpen > #mainContainer {
+    left: 0px;
+  }
+  html[dir='rtl'] #outerContainer.sidebarOpen > #mainContainer {
+    right: 0px;
+  }
+
+  html[dir='ltr'] .outerCenter {
+    float: left;
+    left: 205px;
+  }
+  html[dir='rtl'] .outerCenter {
+    float: right;
+    right: 205px;
+  }
+
+  #outerContainer .hiddenLargeView,
+  #outerContainer .hiddenMediumView {
+    display: inherit;
+  }
+  #outerContainer .visibleLargeView,
+  #outerContainer .visibleMediumView {
+    display: none;
+  }
+}
+
+@media all and (max-width: 700px) {
+  #outerContainer .hiddenLargeView {
+    display: none;
+  }
+  #outerContainer .visibleLargeView {
+    display: inherit;
+  }
+}
+
+@media all and (max-width: 660px) {
+  #outerContainer .hiddenMediumView {
+    display: none;
+  }
+  #outerContainer .visibleMediumView {
+    display: inherit;
+  }
+}
+
+@media all and (max-width: 600px) {
+  .hiddenSmallView {
+    display: none;
+  }
+  .visibleSmallView {
+    display: inherit;
+  }
+  html[dir='ltr'] #outerContainer.sidebarMoving .outerCenter,
+  html[dir='ltr'] #outerContainer.sidebarOpen .outerCenter,
+  html[dir='ltr'] .outerCenter {
+    left: 156px;
+  }
+  html[dir='rtl'] #outerContainer.sidebarMoving .outerCenter,
+  html[dir='rtl'] #outerContainer.sidebarOpen .outerCenter,
+  html[dir='rtl'] .outerCenter {
+    right: 156px;
+  }
+  .toolbarButtonSpacer {
+    width: 0;
+  }
+}
+
+@media all and (max-width: 510px) {
+  #scaleSelectContainer, #pageNumberLabel {
+    display: none;
+  }
+}
diff --git a/public/vendor/plugins/pdfjs/web/viewer.html b/public/vendor/plugins/pdfjs/web/viewer.html
new file mode 100644
index 0000000000..c03c0acf4b
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/viewer.html
@@ -0,0 +1,422 @@
+<!DOCTYPE html>
+<!--
+Copyright 2012 Mozilla Foundation
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+Adobe CMap resources are covered by their own copyright but the same license:
+
+    Copyright 1990-2015 Adobe Systems Incorporated.
+
+See https://github.com/adobe-type-tools/cmap-resources
+-->
+<html dir="ltr" mozdisallowselectionprint moznomarginboxes>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
+    <meta name="google" content="notranslate">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <title>PDF.js viewer</title>
+
+
+    <link rel="stylesheet" href="viewer.css"/>
+
+    <script src="compatibility.js"></script>
+
+
+
+<!-- This snippet is used in production (included from viewer.html) -->
+<script src="../build/pdf.js"></script>
+
+
+
+    <script src="debugger.js"></script>
+    <script src="viewer.js"></script>
+
+  </head>
+
+  <body tabindex="1" class="loadingInProgress">
+    <div id="outerContainer">
+
+      <div id="sidebarContainer">
+        <div id="toolbarSidebar">
+          <div class="splitToolbarButton toggled">
+            <button id="viewThumbnail" class="toolbarButton group toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs">
+               <span data-l10n-id="thumbs_label">Thumbnails</span>
+            </button>
+            <button id="viewOutline" class="toolbarButton group" title="Show Document Outline" tabindex="3" data-l10n-id="outline">
+               <span data-l10n-id="outline_label">Document Outline</span>
+            </button>
+            <button id="viewAttachments" class="toolbarButton group" title="Show Attachments" tabindex="4" data-l10n-id="attachments">
+               <span data-l10n-id="attachments_label">Attachments</span>
+            </button>
+          </div>
+        </div>
+        <div id="sidebarContent">
+          <div id="thumbnailView">
+          </div>
+          <div id="outlineView" class="hidden">
+          </div>
+          <div id="attachmentsView" class="hidden">
+          </div>
+        </div>
+      </div>  <!-- sidebarContainer -->
+
+      <div id="mainContainer">
+        <div class="findbar hidden doorHanger hiddenSmallView" id="findbar">
+          <label for="findInput" class="toolbarLabel" data-l10n-id="find_label">Find:</label>
+          <input id="findInput" class="toolbarField" tabindex="91">
+          <div class="splitToolbarButton">
+            <button class="toolbarButton findPrevious" title="" id="findPrevious" tabindex="92" data-l10n-id="find_previous">
+              <span data-l10n-id="find_previous_label">Previous</span>
+            </button>
+            <div class="splitToolbarButtonSeparator"></div>
+            <button class="toolbarButton findNext" title="" id="findNext" tabindex="93" data-l10n-id="find_next">
+              <span data-l10n-id="find_next_label">Next</span>
+            </button>
+          </div>
+          <input type="checkbox" id="findHighlightAll" class="toolbarField" tabindex="94">
+          <label for="findHighlightAll" class="toolbarLabel" data-l10n-id="find_highlight">Highlight all</label>
+          <input type="checkbox" id="findMatchCase" class="toolbarField" tabindex="95">
+          <label for="findMatchCase" class="toolbarLabel" data-l10n-id="find_match_case_label">Match case</label>
+          <span id="findResultsCount" class="toolbarLabel hidden"></span>
+          <span id="findMsg" class="toolbarLabel"></span>
+        </div>  <!-- findbar -->
+
+        <div id="secondaryToolbar" class="secondaryToolbar hidden doorHangerRight">
+          <div id="secondaryToolbarButtonContainer">
+            <button id="secondaryPresentationMode" class="secondaryToolbarButton presentationMode visibleLargeView" title="Switch to Presentation Mode" tabindex="51" data-l10n-id="presentation_mode">
+              <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
+            </button>
+
+            <button id="secondaryOpenFile" class="secondaryToolbarButton openFile visibleLargeView" title="Open File" tabindex="52" data-l10n-id="open_file">
+              <span data-l10n-id="open_file_label">Open</span>
+            </button>
+
+            <button id="secondaryPrint" class="secondaryToolbarButton print visibleMediumView" title="Print" tabindex="53" data-l10n-id="print">
+              <span data-l10n-id="print_label">Print</span>
+            </button>
+
+            <button id="secondaryDownload" class="secondaryToolbarButton download visibleMediumView" title="Download" tabindex="54" data-l10n-id="download">
+              <span data-l10n-id="download_label">Download</span>
+            </button>
+
+            <a href="#" id="secondaryViewBookmark" class="secondaryToolbarButton bookmark visibleSmallView" title="Current view (copy or open in new window)" tabindex="55" data-l10n-id="bookmark">
+              <span data-l10n-id="bookmark_label">Current View</span>
+            </a>
+
+            <div class="horizontalToolbarSeparator visibleLargeView"></div>
+
+            <button id="firstPage" class="secondaryToolbarButton firstPage" title="Go to First Page" tabindex="56" data-l10n-id="first_page">
+              <span data-l10n-id="first_page_label">Go to First Page</span>
+            </button>
+            <button id="lastPage" class="secondaryToolbarButton lastPage" title="Go to Last Page" tabindex="57" data-l10n-id="last_page">
+              <span data-l10n-id="last_page_label">Go to Last Page</span>
+            </button>
+
+            <div class="horizontalToolbarSeparator"></div>
+
+            <button id="pageRotateCw" class="secondaryToolbarButton rotateCw" title="Rotate Clockwise" tabindex="58" data-l10n-id="page_rotate_cw">
+              <span data-l10n-id="page_rotate_cw_label">Rotate Clockwise</span>
+            </button>
+            <button id="pageRotateCcw" class="secondaryToolbarButton rotateCcw" title="Rotate Counterclockwise" tabindex="59" data-l10n-id="page_rotate_ccw">
+              <span data-l10n-id="page_rotate_ccw_label">Rotate Counterclockwise</span>
+            </button>
+
+            <div class="horizontalToolbarSeparator"></div>
+
+            <button id="toggleHandTool" class="secondaryToolbarButton handTool" title="Enable hand tool" tabindex="60" data-l10n-id="hand_tool_enable">
+              <span data-l10n-id="hand_tool_enable_label">Enable hand tool</span>
+            </button>
+
+            <div class="horizontalToolbarSeparator"></div>
+
+            <button id="documentProperties" class="secondaryToolbarButton documentProperties" title="Document Properties…" tabindex="61" data-l10n-id="document_properties">
+              <span data-l10n-id="document_properties_label">Document Properties…</span>
+            </button>
+          </div>
+        </div>  <!-- secondaryToolbar -->
+
+        <div class="toolbar">
+          <div id="toolbarContainer">
+            <div id="toolbarViewer">
+              <div id="toolbarViewerLeft">
+                <button id="sidebarToggle" class="toolbarButton" title="Toggle Sidebar" tabindex="11" data-l10n-id="toggle_sidebar">
+                  <span data-l10n-id="toggle_sidebar_label">Toggle Sidebar</span>
+                </button>
+                <div class="toolbarButtonSpacer"></div>
+                <button id="viewFind" class="toolbarButton group hiddenSmallView" title="Find in Document" tabindex="12" data-l10n-id="findbar">
+                   <span data-l10n-id="findbar_label">Find</span>
+                </button>
+                <div class="splitToolbarButton">
+                  <button class="toolbarButton pageUp" title="Previous Page" id="previous" tabindex="13" data-l10n-id="previous">
+                    <span data-l10n-id="previous_label">Previous</span>
+                  </button>
+                  <div class="splitToolbarButtonSeparator"></div>
+                  <button class="toolbarButton pageDown" title="Next Page" id="next" tabindex="14" data-l10n-id="next">
+                    <span data-l10n-id="next_label">Next</span>
+                  </button>
+                </div>
+                <label id="pageNumberLabel" class="toolbarLabel" for="pageNumber" data-l10n-id="page_label">Page: </label>
+                <input type="number" id="pageNumber" class="toolbarField pageNumber" value="1" size="4" min="1" tabindex="15">
+                <span id="numPages" class="toolbarLabel"></span>
+              </div>
+              <div id="toolbarViewerRight">
+                <button id="presentationMode" class="toolbarButton presentationMode hiddenLargeView" title="Switch to Presentation Mode" tabindex="31" data-l10n-id="presentation_mode">
+                  <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
+                </button>
+
+                <button id="openFile" class="toolbarButton openFile hiddenLargeView" title="Open File" tabindex="32" data-l10n-id="open_file">
+                  <span data-l10n-id="open_file_label">Open</span>
+                </button>
+
+                <button id="print" class="toolbarButton print hiddenMediumView" title="Print" tabindex="33" data-l10n-id="print">
+                  <span data-l10n-id="print_label">Print</span>
+                </button>
+
+                <button id="download" class="toolbarButton download hiddenMediumView" title="Download" tabindex="34" data-l10n-id="download">
+                  <span data-l10n-id="download_label">Download</span>
+                </button>
+                <a href="#" id="viewBookmark" class="toolbarButton bookmark hiddenSmallView" title="Current view (copy or open in new window)" tabindex="35" data-l10n-id="bookmark">
+                  <span data-l10n-id="bookmark_label">Current View</span>
+                </a>
+
+                <div class="verticalToolbarSeparator hiddenSmallView"></div>
+
+                <button id="secondaryToolbarToggle" class="toolbarButton" title="Tools" tabindex="36" data-l10n-id="tools">
+                  <span data-l10n-id="tools_label">Tools</span>
+                </button>
+              </div>
+              <div class="outerCenter">
+                <div class="innerCenter" id="toolbarViewerMiddle">
+                  <div class="splitToolbarButton">
+                    <button id="zoomOut" class="toolbarButton zoomOut" title="Zoom Out" tabindex="21" data-l10n-id="zoom_out">
+                      <span data-l10n-id="zoom_out_label">Zoom Out</span>
+                    </button>
+                    <div class="splitToolbarButtonSeparator"></div>
+                    <button id="zoomIn" class="toolbarButton zoomIn" title="Zoom In" tabindex="22" data-l10n-id="zoom_in">
+                      <span data-l10n-id="zoom_in_label">Zoom In</span>
+                     </button>
+                  </div>
+                  <span id="scaleSelectContainer" class="dropdownToolbarButton">
+                     <select id="scaleSelect" title="Zoom" tabindex="23" data-l10n-id="zoom">
+                      <option id="pageAutoOption" title="" value="auto" selected="selected" data-l10n-id="page_scale_auto">Automatic Zoom</option>
+                      <option id="pageActualOption" title="" value="page-actual" data-l10n-id="page_scale_actual">Actual Size</option>
+                      <option id="pageFitOption" title="" value="page-fit" data-l10n-id="page_scale_fit">Fit Page</option>
+                      <option id="pageWidthOption" title="" value="page-width" data-l10n-id="page_scale_width">Full Width</option>
+                      <option id="customScaleOption" title="" value="custom"></option>
+                      <option title="" value="0.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 50 }'>50%</option>
+                      <option title="" value="0.75" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 75 }'>75%</option>
+                      <option title="" value="1" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 100 }'>100%</option>
+                      <option title="" value="1.25" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 125 }'>125%</option>
+                      <option title="" value="1.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 150 }'>150%</option>
+                      <option title="" value="2" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 200 }'>200%</option>
+                      <option title="" value="3" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 300 }'>300%</option>
+                      <option title="" value="4" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 400 }'>400%</option>
+                    </select>
+                  </span>
+                </div>
+              </div>
+            </div>
+            <div id="loadingBar">
+              <div class="progress">
+                <div class="glimmer">
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <menu type="context" id="viewerContextMenu">
+          <menuitem id="contextFirstPage" label="First Page"
+                    data-l10n-id="first_page"></menuitem>
+          <menuitem id="contextLastPage" label="Last Page"
+                    data-l10n-id="last_page"></menuitem>
+          <menuitem id="contextPageRotateCw" label="Rotate Clockwise"
+                    data-l10n-id="page_rotate_cw"></menuitem>
+          <menuitem id="contextPageRotateCcw" label="Rotate Counter-Clockwise"
+                    data-l10n-id="page_rotate_ccw"></menuitem>
+        </menu>
+
+        <div id="viewerContainer" tabindex="0">
+          <div id="viewer" class="pdfViewer"></div>
+        </div>
+
+        <div id="errorWrapper" hidden='true'>
+          <div id="errorMessageLeft">
+            <span id="errorMessage"></span>
+            <button id="errorShowMore" data-l10n-id="error_more_info">
+              More Information
+            </button>
+            <button id="errorShowLess" data-l10n-id="error_less_info" hidden='true'>
+              Less Information
+            </button>
+          </div>
+          <div id="errorMessageRight">
+            <button id="errorClose" data-l10n-id="error_close">
+              Close
+            </button>
+          </div>
+          <div class="clearBoth"></div>
+          <textarea id="errorMoreInfo" hidden='true' readonly="readonly"></textarea>
+        </div>
+      </div> <!-- mainContainer -->
+
+      <div id="overlayContainer" class="hidden">
+        <div id="passwordOverlay" class="container hidden">
+          <div class="dialog">
+            <div class="row">
+              <p id="passwordText" data-l10n-id="password_label">Enter the password to open this PDF file:</p>
+            </div>
+            <div class="row">
+              <!-- The type="password" attribute is set via script, to prevent warnings in Firefox for all http:// documents. -->
+              <input id="password" class="toolbarField" />
+            </div>
+            <div class="buttonRow">
+              <button id="passwordCancel" class="overlayButton"><span data-l10n-id="password_cancel">Cancel</span></button>
+              <button id="passwordSubmit" class="overlayButton"><span data-l10n-id="password_ok">OK</span></button>
+            </div>
+          </div>
+        </div>
+        <div id="documentPropertiesOverlay" class="container hidden">
+          <div class="dialog">
+            <div class="row">
+              <span data-l10n-id="document_properties_file_name">File name:</span> <p id="fileNameField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_file_size">File size:</span> <p id="fileSizeField">-</p>
+            </div>
+            <div class="separator"></div>
+            <div class="row">
+              <span data-l10n-id="document_properties_title">Title:</span> <p id="titleField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_author">Author:</span> <p id="authorField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_subject">Subject:</span> <p id="subjectField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_keywords">Keywords:</span> <p id="keywordsField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_creation_date">Creation Date:</span> <p id="creationDateField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_modification_date">Modification Date:</span> <p id="modificationDateField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_creator">Creator:</span> <p id="creatorField">-</p>
+            </div>
+            <div class="separator"></div>
+            <div class="row">
+              <span data-l10n-id="document_properties_producer">PDF Producer:</span> <p id="producerField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_version">PDF Version:</span> <p id="versionField">-</p>
+            </div>
+            <div class="row">
+              <span data-l10n-id="document_properties_page_count">Page Count:</span> <p id="pageCountField">-</p>
+            </div>
+            <div class="buttonRow">
+              <button id="documentPropertiesClose" class="overlayButton"><span data-l10n-id="document_properties_close">Close</span></button>
+            </div>
+          </div>
+        </div>
+      </div>  <!-- overlayContainer -->
+
+    </div> <!-- outerContainer -->
+    <div id="printContainer"></div>
+<div id="mozPrintCallback-shim" hidden>
+  <style>
+@media print {
+  #printContainer div {
+    page-break-after: always;
+    page-break-inside: avoid;
+  }
+}
+  </style>
+  <style scoped>
+#mozPrintCallback-shim {
+  position: fixed;
+  top: 0;
+  left: 0;
+  height: 100%;
+  width: 100%;
+  z-index: 9999999;
+
+  display: block;
+  text-align: center;
+  background-color: rgba(0, 0, 0, 0.5);
+}
+#mozPrintCallback-shim[hidden] {
+  display: none;
+}
+@media print {
+  #mozPrintCallback-shim {
+    display: none;
+  }
+}
+
+#mozPrintCallback-shim .mozPrintCallback-dialog-box {
+  display: inline-block;
+  margin: -50px auto 0;
+  position: relative;
+  top: 45%;
+  left: 0;
+  min-width: 220px;
+  max-width: 400px;
+
+  padding: 9px;
+
+  border: 1px solid hsla(0, 0%, 0%, .5);
+  border-radius: 2px;
+  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
+
+  background-color: #474747;
+
+  color: hsl(0, 0%, 85%);
+  font-size: 16px;
+  line-height: 20px;
+}
+#mozPrintCallback-shim .progress-row {
+  clear: both;
+  padding: 1em 0;
+}
+#mozPrintCallback-shim progress {
+  width: 100%;
+}
+#mozPrintCallback-shim .relative-progress {
+  clear: both;
+  float: right;
+}
+#mozPrintCallback-shim .progress-actions {
+  clear: both;
+}
+  </style>
+  <div class="mozPrintCallback-dialog-box">
+    <!-- TODO: Localise the following strings -->
+    Preparing document for printing...
+    <div class="progress-row">
+      <progress value="0" max="100"></progress>
+      <span class="relative-progress">0%</span>
+    </div>
+    <div class="progress-actions">
+      <input type="button" value="Cancel" class="mozPrintCallback-cancel">
+    </div>
+  </div>
+</div>
+
+  </body>
+</html>
+
diff --git a/public/vendor/plugins/pdfjs/web/viewer.js b/public/vendor/plugins/pdfjs/web/viewer.js
new file mode 100644
index 0000000000..1fc9d7bfe9
--- /dev/null
+++ b/public/vendor/plugins/pdfjs/web/viewer.js
@@ -0,0 +1,7952 @@
+/* Copyright 2012 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* globals PDFJS, PDFBug, FirefoxCom, Stats, ProgressBar,
+           DownloadManager, getFileName, getPDFFileNameFromURL,
+           PDFHistory, Preferences, SidebarView, ViewHistory, Stats,
+           PDFThumbnailViewer, URL, noContextMenuHandler, SecondaryToolbar,
+           PasswordPrompt, PDFPresentationMode, PDFDocumentProperties, HandTool,
+           Promise, PDFLinkService, PDFOutlineView, PDFAttachmentView,
+           OverlayManager, PDFFindController, PDFFindBar, PDFViewer,
+           PDFRenderingQueue, PresentationModeState, parseQueryString,
+           RenderingStates, UNKNOWN_SCALE, DEFAULT_SCALE_VALUE,
+           IGNORE_CURRENT_POSITION_ON_ZOOM: true */
+
+'use strict';
+
+var DEFAULT_URL = 'compressed.tracemonkey-pldi-09.pdf';
+var DEFAULT_SCALE_DELTA = 1.1;
+var MIN_SCALE = 0.25;
+var MAX_SCALE = 10.0;
+var SCALE_SELECT_CONTAINER_PADDING = 8;
+var SCALE_SELECT_PADDING = 22;
+var PAGE_NUMBER_LOADING_INDICATOR = 'visiblePageIsLoading';
+var DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000;
+
+function configure(PDFJS) {
+  PDFJS.imageResourcesPath = './images/';
+  PDFJS.workerSrc = '../build/pdf.worker.js';
+}
+
+var CSS_UNITS = 96.0 / 72.0;
+var DEFAULT_SCALE_VALUE = 'auto';
+var DEFAULT_SCALE = 1.0;
+var UNKNOWN_SCALE = 0;
+var MAX_AUTO_SCALE = 1.25;
+var SCROLLBAR_PADDING = 40;
+var VERTICAL_PADDING = 5;
+
+function getFileName(url) {
+  var anchor = url.indexOf('#');
+  var query = url.indexOf('?');
+  var end = Math.min(
+    anchor > 0 ? anchor : url.length,
+    query > 0 ? query : url.length);
+  return url.substring(url.lastIndexOf('/', end) + 1, end);
+}
+
+/**
+ * Returns scale factor for the canvas. It makes sense for the HiDPI displays.
+ * @return {Object} The object with horizontal (sx) and vertical (sy)
+                    scales. The scaled property is set to false if scaling is
+                    not required, true otherwise.
+ */
+function getOutputScale(ctx) {
+  var devicePixelRatio = window.devicePixelRatio || 1;
+  var backingStoreRatio = ctx.webkitBackingStorePixelRatio ||
+                          ctx.mozBackingStorePixelRatio ||
+                          ctx.msBackingStorePixelRatio ||
+                          ctx.oBackingStorePixelRatio ||
+                          ctx.backingStorePixelRatio || 1;
+  var pixelRatio = devicePixelRatio / backingStoreRatio;
+  return {
+    sx: pixelRatio,
+    sy: pixelRatio,
+    scaled: pixelRatio !== 1
+  };
+}
+
+/**
+ * Scrolls specified element into view of its parent.
+ * @param {Object} element - The element to be visible.
+ * @param {Object} spot - An object with optional top and left properties,
+ *   specifying the offset from the top left edge.
+ * @param {boolean} skipOverflowHiddenElements - Ignore elements that have
+ *   the CSS rule `overflow: hidden;` set. The default is false.
+ */
+function scrollIntoView(element, spot, skipOverflowHiddenElements) {
+  // Assuming offsetParent is available (it's not available when viewer is in
+  // hidden iframe or object). We have to scroll: if the offsetParent is not set
+  // producing the error. See also animationStartedClosure.
+  var parent = element.offsetParent;
+  if (!parent) {
+    console.error('offsetParent is not set -- cannot scroll');
+    return;
+  }
+  var checkOverflow = skipOverflowHiddenElements || false;
+  var offsetY = element.offsetTop + element.clientTop;
+  var offsetX = element.offsetLeft + element.clientLeft;
+  while (parent.clientHeight === parent.scrollHeight ||
+         (checkOverflow && getComputedStyle(parent).overflow === 'hidden')) {
+    if (parent.dataset._scaleY) {
+      offsetY /= parent.dataset._scaleY;
+      offsetX /= parent.dataset._scaleX;
+    }
+    offsetY += parent.offsetTop;
+    offsetX += parent.offsetLeft;
+    parent = parent.offsetParent;
+    if (!parent) {
+      return; // no need to scroll
+    }
+  }
+  if (spot) {
+    if (spot.top !== undefined) {
+      offsetY += spot.top;
+    }
+    if (spot.left !== undefined) {
+      offsetX += spot.left;
+      parent.scrollLeft = offsetX;
+    }
+  }
+  parent.scrollTop = offsetY;
+}
+
+/**
+ * Helper function to start monitoring the scroll event and converting them into
+ * PDF.js friendly one: with scroll debounce and scroll direction.
+ */
+function watchScroll(viewAreaElement, callback) {
+  var debounceScroll = function debounceScroll(evt) {
+    if (rAF) {
+      return;
+    }
+    // schedule an invocation of scroll for next animation frame.
+    rAF = window.requestAnimationFrame(function viewAreaElementScrolled() {
+      rAF = null;
+
+      var currentY = viewAreaElement.scrollTop;
+      var lastY = state.lastY;
+      if (currentY !== lastY) {
+        state.down = currentY > lastY;
+      }
+      state.lastY = currentY;
+      callback(state);
+    });
+  };
+
+  var state = {
+    down: true,
+    lastY: viewAreaElement.scrollTop,
+    _eventHandler: debounceScroll
+  };
+
+  var rAF = null;
+  viewAreaElement.addEventListener('scroll', debounceScroll, true);
+  return state;
+}
+
+/**
+ * Helper function to parse query string (e.g. ?param1=value&parm2=...).
+ */
+function parseQueryString(query) {
+  var parts = query.split('&');
+  var params = {};
+  for (var i = 0, ii = parts.length; i < ii; ++i) {
+    var param = parts[i].split('=');
+    var key = param[0].toLowerCase();
+    var value = param.length > 1 ? param[1] : null;
+    params[decodeURIComponent(key)] = decodeURIComponent(value);
+  }
+  return params;
+}
+
+/**
+ * Use binary search to find the index of the first item in a given array which
+ * passes a given condition. The items are expected to be sorted in the sense
+ * that if the condition is true for one item in the array, then it is also true
+ * for all following items.
+ *
+ * @returns {Number} Index of the first array element to pass the test,
+ *                   or |items.length| if no such element exists.
+ */
+function binarySearchFirstItem(items, condition) {
+  var minIndex = 0;
+  var maxIndex = items.length - 1;
+
+  if (items.length === 0 || !condition(items[maxIndex])) {
+    return items.length;
+  }
+  if (condition(items[minIndex])) {
+    return minIndex;
+  }
+
+  while (minIndex < maxIndex) {
+    var currentIndex = (minIndex + maxIndex) >> 1;
+    var currentItem = items[currentIndex];
+    if (condition(currentItem)) {
+      maxIndex = currentIndex;
+    } else {
+      minIndex = currentIndex + 1;
+    }
+  }
+  return minIndex; /* === maxIndex */
+}
+
+/**
+ *  Approximates float number as a fraction using Farey sequence (max order
+ *  of 8).
+ *  @param {number} x - Positive float number.
+ *  @returns {Array} Estimated fraction: the first array item is a numerator,
+ *                   the second one is a denominator.
+ */
+function approximateFraction(x) {
+  // Fast paths for int numbers or their inversions.
+  if (Math.floor(x) === x) {
+    return [x, 1];
+  }
+  var xinv = 1 / x;
+  var limit = 8;
+  if (xinv > limit) {
+    return [1, limit];
+  } else  if (Math.floor(xinv) === xinv) {
+    return [1, xinv];
+  }
+
+  var x_ = x > 1 ? xinv : x;
+  // a/b and c/d are neighbours in Farey sequence.
+  var a = 0, b = 1, c = 1, d = 1;
+  // Limiting search to order 8.
+  while (true) {
+    // Generating next term in sequence (order of q).
+    var p = a + c, q = b + d;
+    if (q > limit) {
+      break;
+    }
+    if (x_ <= p / q) {
+      c = p; d = q;
+    } else {
+      a = p; b = q;
+    }
+  }
+  // Select closest of the neighbours to x.
+  if (x_ - a / b < c / d - x_) {
+    return x_ === x ? [a, b] : [b, a];
+  } else {
+    return x_ === x ? [c, d] : [d, c];
+  }
+}
+
+function roundToDivide(x, div) {
+  var r = x % div;
+  return r === 0 ? x : Math.round(x - r + div);
+}
+
+/**
+ * Generic helper to find out what elements are visible within a scroll pane.
+ */
+function getVisibleElements(scrollEl, views, sortByVisibility) {
+  var top = scrollEl.scrollTop, bottom = top + scrollEl.clientHeight;
+  var left = scrollEl.scrollLeft, right = left + scrollEl.clientWidth;
+
+  function isElementBottomBelowViewTop(view) {
+    var element = view.div;
+    var elementBottom =
+      element.offsetTop + element.clientTop + element.clientHeight;
+    return elementBottom > top;
+  }
+
+  var visible = [], view, element;
+  var currentHeight, viewHeight, hiddenHeight, percentHeight;
+  var currentWidth, viewWidth;
+  var firstVisibleElementInd = (views.length === 0) ? 0 :
+    binarySearchFirstItem(views, isElementBottomBelowViewTop);
+
+  for (var i = firstVisibleElementInd, ii = views.length; i < ii; i++) {
+    view = views[i];
+    element = view.div;
+    currentHeight = element.offsetTop + element.clientTop;
+    viewHeight = element.clientHeight;
+
+    if (currentHeight > bottom) {
+      break;
+    }
+
+    currentWidth = element.offsetLeft + element.clientLeft;
+    viewWidth = element.clientWidth;
+    if (currentWidth + viewWidth < left || currentWidth > right) {
+      continue;
+    }
+    hiddenHeight = Math.max(0, top - currentHeight) +
+      Math.max(0, currentHeight + viewHeight - bottom);
+    percentHeight = ((viewHeight - hiddenHeight) * 100 / viewHeight) | 0;
+
+    visible.push({
+      id: view.id,
+      x: currentWidth,
+      y: currentHeight,
+      view: view,
+      percent: percentHeight
+    });
+  }
+
+  var first = visible[0];
+  var last = visible[visible.length - 1];
+
+  if (sortByVisibility) {
+    visible.sort(function(a, b) {
+      var pc = a.percent - b.percent;
+      if (Math.abs(pc) > 0.001) {
+        return -pc;
+      }
+      return a.id - b.id; // ensure stability
+    });
+  }
+  return {first: first, last: last, views: visible};
+}
+
+/**
+ * Event handler to suppress context menu.
+ */
+function noContextMenuHandler(e) {
+  e.preventDefault();
+}
+
+/**
+ * Returns the filename or guessed filename from the url (see issue 3455).
+ * url {String} The original PDF location.
+ * @return {String} Guessed PDF file name.
+ */
+function getPDFFileNameFromURL(url) {
+  var reURI = /^(?:([^:]+:)?\/\/[^\/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/;
+  //            SCHEME      HOST         1.PATH  2.QUERY   3.REF
+  // Pattern to get last matching NAME.pdf
+  var reFilename = /[^\/?#=]+\.pdf\b(?!.*\.pdf\b)/i;
+  var splitURI = reURI.exec(url);
+  var suggestedFilename = reFilename.exec(splitURI[1]) ||
+                           reFilename.exec(splitURI[2]) ||
+                           reFilename.exec(splitURI[3]);
+  if (suggestedFilename) {
+    suggestedFilename = suggestedFilename[0];
+    if (suggestedFilename.indexOf('%') !== -1) {
+      // URL-encoded %2Fpath%2Fto%2Ffile.pdf should be file.pdf
+      try {
+        suggestedFilename =
+          reFilename.exec(decodeURIComponent(suggestedFilename))[0];
+      } catch(e) { // Possible (extremely rare) errors:
+        // URIError "Malformed URI", e.g. for "%AA.pdf"
+        // TypeError "null has no properties", e.g. for "%2F.pdf"
+      }
+    }
+  }
+  return suggestedFilename || 'document.pdf';
+}
+
+var ProgressBar = (function ProgressBarClosure() {
+
+  function clamp(v, min, max) {
+    return Math.min(Math.max(v, min), max);
+  }
+
+  function ProgressBar(id, opts) {
+    this.visible = true;
+
+    // Fetch the sub-elements for later.
+    this.div = document.querySelector(id + ' .progress');
+
+    // Get the loading bar element, so it can be resized to fit the viewer.
+    this.bar = this.div.parentNode;
+
+    // Get options, with sensible defaults.
+    this.height = opts.height || 100;
+    this.width = opts.width || 100;
+    this.units = opts.units || '%';
+
+    // Initialize heights.
+    this.div.style.height = this.height + this.units;
+    this.percent = 0;
+  }
+
+  ProgressBar.prototype = {
+
+    updateBar: function ProgressBar_updateBar() {
+      if (this._indeterminate) {
+        this.div.classList.add('indeterminate');
+        this.div.style.width = this.width + this.units;
+        return;
+      }
+
+      this.div.classList.remove('indeterminate');
+      var progressSize = this.width * this._percent / 100;
+      this.div.style.width = progressSize + this.units;
+    },
+
+    get percent() {
+      return this._percent;
+    },
+
+    set percent(val) {
+      this._indeterminate = isNaN(val);
+      this._percent = clamp(val, 0, 100);
+      this.updateBar();
+    },
+
+    setWidth: function ProgressBar_setWidth(viewer) {
+      if (viewer) {
+        var container = viewer.parentNode;
+        var scrollbarWidth = container.offsetWidth - viewer.offsetWidth;
+        if (scrollbarWidth > 0) {
+          this.bar.setAttribute('style', 'width: calc(100% - ' +
+                                         scrollbarWidth + 'px);');
+        }
+      }
+    },
+
+    hide: function ProgressBar_hide() {
+      if (!this.visible) {
+        return;
+      }
+      this.visible = false;
+      this.bar.classList.add('hidden');
+      document.body.classList.remove('loadingInProgress');
+    },
+
+    show: function ProgressBar_show() {
+      if (this.visible) {
+        return;
+      }
+      this.visible = true;
+      document.body.classList.add('loadingInProgress');
+      this.bar.classList.remove('hidden');
+    }
+  };
+
+  return ProgressBar;
+})();
+
+
+
+var DEFAULT_PREFERENCES = {
+  showPreviousViewOnLoad: true,
+  defaultZoomValue: '',
+  sidebarViewOnLoad: 0,
+  enableHandToolOnLoad: false,
+  enableWebGL: false,
+  pdfBugEnabled: false,
+  disableRange: false,
+  disableStream: false,
+  disableAutoFetch: false,
+  disableFontFace: false,
+  disableTextLayer: false,
+  useOnlyCssZoom: false,
+  externalLinkTarget: 0,
+};
+
+
+var SidebarView = {
+  NONE: 0,
+  THUMBS: 1,
+  OUTLINE: 2,
+  ATTACHMENTS: 3
+};
+
+/**
+ * Preferences - Utility for storing persistent settings.
+ *   Used for settings that should be applied to all opened documents,
+ *   or every time the viewer is loaded.
+ */
+var Preferences = {
+  prefs: Object.create(DEFAULT_PREFERENCES),
+  isInitializedPromiseResolved: false,
+  initializedPromise: null,
+
+  /**
+   * Initialize and fetch the current preference values from storage.
+   * @return {Promise} A promise that is resolved when the preferences
+   *                   have been initialized.
+   */
+  initialize: function preferencesInitialize() {
+    return this.initializedPromise =
+        this._readFromStorage(DEFAULT_PREFERENCES).then(function(prefObj) {
+      this.isInitializedPromiseResolved = true;
+      if (prefObj) {
+        this.prefs = prefObj;
+      }
+    }.bind(this));
+  },
+
+  /**
+   * Stub function for writing preferences to storage.
+   * NOTE: This should be overridden by a build-specific function defined below.
+   * @param {Object} prefObj The preferences that should be written to storage.
+   * @return {Promise} A promise that is resolved when the preference values
+   *                   have been written.
+   */
+  _writeToStorage: function preferences_writeToStorage(prefObj) {
+    return Promise.resolve();
+  },
+
+  /**
+   * Stub function for reading preferences from storage.
+   * NOTE: This should be overridden by a build-specific function defined below.
+   * @param {Object} prefObj The preferences that should be read from storage.
+   * @return {Promise} A promise that is resolved with an {Object} containing
+   *                   the preferences that have been read.
+   */
+  _readFromStorage: function preferences_readFromStorage(prefObj) {
+    return Promise.resolve();
+  },
+
+  /**
+   * Reset the preferences to their default values and update storage.
+   * @return {Promise} A promise that is resolved when the preference values
+   *                   have been reset.
+   */
+  reset: function preferencesReset() {
+    return this.initializedPromise.then(function() {
+      this.prefs = Object.create(DEFAULT_PREFERENCES);
+      return this._writeToStorage(DEFAULT_PREFERENCES);
+    }.bind(this));
+  },
+
+  /**
+   * Replace the current preference values with the ones from storage.
+   * @return {Promise} A promise that is resolved when the preference values
+   *                   have been updated.
+   */
+  reload: function preferencesReload() {
+    return this.initializedPromise.then(function () {
+      this._readFromStorage(DEFAULT_PREFERENCES).then(function(prefObj) {
+        if (prefObj) {
+          this.prefs = prefObj;
+        }
+      }.bind(this));
+    }.bind(this));
+  },
+
+  /**
+   * Set the value of a preference.
+   * @param {string} name The name of the preference that should be changed.
+   * @param {boolean|number|string} value The new value of the preference.
+   * @return {Promise} A promise that is resolved when the value has been set,
+   *                   provided that the preference exists and the types match.
+   */
+  set: function preferencesSet(name, value) {
+    return this.initializedPromise.then(function () {
+      if (DEFAULT_PREFERENCES[name] === undefined) {
+        throw new Error('preferencesSet: \'' + name + '\' is undefined.');
+      } else if (value === undefined) {
+        throw new Error('preferencesSet: no value is specified.');
+      }
+      var valueType = typeof value;
+      var defaultType = typeof DEFAULT_PREFERENCES[name];
+
+      if (valueType !== defaultType) {
+        if (valueType === 'number' && defaultType === 'string') {
+          value = value.toString();
+        } else {
+          throw new Error('Preferences_set: \'' + value + '\' is a \"' +
+                          valueType + '\", expected \"' + defaultType + '\".');
+        }
+      } else {
+        if (valueType === 'number' && (value | 0) !== value) {
+          throw new Error('Preferences_set: \'' + value +
+                          '\' must be an \"integer\".');
+        }
+      }
+      this.prefs[name] = value;
+      return this._writeToStorage(this.prefs);
+    }.bind(this));
+  },
+
+  /**
+   * Get the value of a preference.
+   * @param {string} name The name of the preference whose value is requested.
+   * @return {Promise} A promise that is resolved with a {boolean|number|string}
+   *                   containing the value of the preference.
+   */
+  get: function preferencesGet(name) {
+    return this.initializedPromise.then(function () {
+      var defaultValue = DEFAULT_PREFERENCES[name];
+
+      if (defaultValue === undefined) {
+        throw new Error('preferencesGet: \'' + name + '\' is undefined.');
+      } else {
+        var prefValue = this.prefs[name];
+
+        if (prefValue !== undefined) {
+          return prefValue;
+        }
+      }
+      return defaultValue;
+    }.bind(this));
+  }
+};
+
+
+Preferences._writeToStorage = function (prefObj) {
+  return new Promise(function (resolve) {
+    localStorage.setItem('pdfjs.preferences', JSON.stringify(prefObj));
+    resolve();
+  });
+};
+
+Preferences._readFromStorage = function (prefObj) {
+  return new Promise(function (resolve) {
+    var readPrefs = JSON.parse(localStorage.getItem('pdfjs.preferences'));
+    resolve(readPrefs);
+  });
+};
+
+
+(function mozPrintCallbackPolyfillClosure() {
+  if ('mozPrintCallback' in document.createElement('canvas')) {
+    return;
+  }
+  // Cause positive result on feature-detection:
+  HTMLCanvasElement.prototype.mozPrintCallback = undefined;
+
+  var canvases;   // During print task: non-live NodeList of <canvas> elements
+  var index;      // Index of <canvas> element that is being processed
+
+  var print = window.print;
+  window.print = function print() {
+    if (canvases) {
+      console.warn('Ignored window.print() because of a pending print job.');
+      return;
+    }
+    try {
+      dispatchEvent('beforeprint');
+    } finally {
+      canvases = document.querySelectorAll('canvas');
+      index = -1;
+      next();
+    }
+  };
+
+  function dispatchEvent(eventType) {
+    var event = document.createEvent('CustomEvent');
+    event.initCustomEvent(eventType, false, false, 'custom');
+    window.dispatchEvent(event);
+  }
+
+  function next() {
+    if (!canvases) {
+      return; // Print task cancelled by user (state reset in abort())
+    }
+
+    renderProgress();
+    if (++index < canvases.length) {
+      var canvas = canvases[index];
+      if (typeof canvas.mozPrintCallback === 'function') {
+        canvas.mozPrintCallback({
+          context: canvas.getContext('2d'),
+          abort: abort,
+          done: next
+        });
+      } else {
+        next();
+      }
+    } else {
+      renderProgress();
+      print.call(window);
+      setTimeout(abort, 20); // Tidy-up
+    }
+  }
+
+  function abort() {
+    if (canvases) {
+      canvases = null;
+      renderProgress();
+      dispatchEvent('afterprint');
+    }
+  }
+
+  function renderProgress() {
+    var progressContainer = document.getElementById('mozPrintCallback-shim');
+    if (canvases && canvases.length) {
+      var progress = Math.round(100 * index / canvases.length);
+      var progressBar = progressContainer.querySelector('progress');
+      var progressPerc = progressContainer.querySelector('.relative-progress');
+      progressBar.value = progress;
+      progressPerc.textContent = progress + '%';
+      progressContainer.removeAttribute('hidden');
+      progressContainer.onclick = abort;
+    } else {
+      progressContainer.setAttribute('hidden', '');
+    }
+  }
+
+  var hasAttachEvent = !!document.attachEvent;
+
+  window.addEventListener('keydown', function(event) {
+    // Intercept Cmd/Ctrl + P in all browsers.
+    // Also intercept Cmd/Ctrl + Shift + P in Chrome and Opera
+    if (event.keyCode === 80/*P*/ && (event.ctrlKey || event.metaKey) &&
+        !event.altKey && (!event.shiftKey || window.chrome || window.opera)) {
+      window.print();
+      if (hasAttachEvent) {
+        // Only attachEvent can cancel Ctrl + P dialog in IE <=10
+        // attachEvent is gone in IE11, so the dialog will re-appear in IE11.
+        return;
+      }
+      event.preventDefault();
+      if (event.stopImmediatePropagation) {
+        event.stopImmediatePropagation();
+      } else {
+        event.stopPropagation();
+      }
+      return;
+    }
+    if (event.keyCode === 27 && canvases) { // Esc
+      abort();
+    }
+  }, true);
+  if (hasAttachEvent) {
+    document.attachEvent('onkeydown', function(event) {
+      event = event || window.event;
+      if (event.keyCode === 80/*P*/ && event.ctrlKey) {
+        event.keyCode = 0;
+        return false;
+      }
+    });
+  }
+
+  if ('onbeforeprint' in window) {
+    // Do not propagate before/afterprint events when they are not triggered
+    // from within this polyfill. (FF/IE).
+    var stopPropagationIfNeeded = function(event) {
+      if (event.detail !== 'custom' && event.stopImmediatePropagation) {
+        event.stopImmediatePropagation();
+      }
+    };
+    window.addEventListener('beforeprint', stopPropagationIfNeeded, false);
+    window.addEventListener('afterprint', stopPropagationIfNeeded, false);
+  }
+})();
+
+
+
+var DownloadManager = (function DownloadManagerClosure() {
+
+  function download(blobUrl, filename) {
+    var a = document.createElement('a');
+    if (a.click) {
+      // Use a.click() if available. Otherwise, Chrome might show
+      // "Unsafe JavaScript attempt to initiate a navigation change
+      //  for frame with URL" and not open the PDF at all.
+      // Supported by (not mentioned = untested):
+      // - Firefox 6 - 19 (4- does not support a.click, 5 ignores a.click)
+      // - Chrome 19 - 26 (18- does not support a.click)
+      // - Opera 9 - 12.15
+      // - Internet Explorer 6 - 10
+      // - Safari 6 (5.1- does not support a.click)
+      a.href = blobUrl;
+      a.target = '_parent';
+      // Use a.download if available. This increases the likelihood that
+      // the file is downloaded instead of opened by another PDF plugin.
+      if ('download' in a) {
+        a.download = filename;
+      }
+      // <a> must be in the document for IE and recent Firefox versions.
+      // (otherwise .click() is ignored)
+      (document.body || document.documentElement).appendChild(a);
+      a.click();
+      a.parentNode.removeChild(a);
+    } else {
+      if (window.top === window &&
+          blobUrl.split('#')[0] === window.location.href.split('#')[0]) {
+        // If _parent == self, then opening an identical URL with different
+        // location hash will only cause a navigation, not a download.
+        var padCharacter = blobUrl.indexOf('?') === -1 ? '?' : '&';
+        blobUrl = blobUrl.replace(/#|$/, padCharacter + '$&');
+      }
+      window.open(blobUrl, '_parent');
+    }
+  }
+
+  function DownloadManager() {}
+
+  DownloadManager.prototype = {
+    downloadUrl: function DownloadManager_downloadUrl(url, filename) {
+      if (!PDFJS.isValidUrl(url, true)) {
+        return; // restricted/invalid URL
+      }
+
+      download(url + '#pdfjs.action=download', filename);
+    },
+
+    downloadData: function DownloadManager_downloadData(data, filename,
+                                                        contentType) {
+      if (navigator.msSaveBlob) { // IE10 and above
+        return navigator.msSaveBlob(new Blob([data], { type: contentType }),
+                                    filename);
+      }
+
+      var blobUrl = PDFJS.createObjectURL(data, contentType);
+      download(blobUrl, filename);
+    },
+
+    download: function DownloadManager_download(blob, url, filename) {
+      if (!URL) {
+        // URL.createObjectURL is not supported
+        this.downloadUrl(url, filename);
+        return;
+      }
+
+      if (navigator.msSaveBlob) {
+        // IE10 / IE11
+        if (!navigator.msSaveBlob(blob, filename)) {
+          this.downloadUrl(url, filename);
+        }
+        return;
+      }
+
+      var blobUrl = URL.createObjectURL(blob);
+      download(blobUrl, filename);
+    }
+  };
+
+  return DownloadManager;
+})();
+
+
+
+
+
+var DEFAULT_VIEW_HISTORY_CACHE_SIZE = 20;
+
+/**
+ * View History - This is a utility for saving various view parameters for
+ *                recently opened files.
+ *
+ * The way that the view parameters are stored depends on how PDF.js is built,
+ * for 'node make <flag>' the following cases exist:
+ *  - FIREFOX or MOZCENTRAL - uses sessionStorage.
+ *  - GENERIC or CHROME     - uses localStorage, if it is available.
+ */
+var ViewHistory = (function ViewHistoryClosure() {
+  function ViewHistory(fingerprint, cacheSize) {
+    this.fingerprint = fingerprint;
+    this.cacheSize = cacheSize || DEFAULT_VIEW_HISTORY_CACHE_SIZE;
+    this.isInitializedPromiseResolved = false;
+    this.initializedPromise =
+        this._readFromStorage().then(function (databaseStr) {
+      this.isInitializedPromiseResolved = true;
+
+      var database = JSON.parse(databaseStr || '{}');
+      if (!('files' in database)) {
+        database.files = [];
+      }
+      if (database.files.length >= this.cacheSize) {
+        database.files.shift();
+      }
+      var index;
+      for (var i = 0, length = database.files.length; i < length; i++) {
+        var branch = database.files[i];
+        if (branch.fingerprint === this.fingerprint) {
+          index = i;
+          break;
+        }
+      }
+      if (typeof index !== 'number') {
+        index = database.files.push({fingerprint: this.fingerprint}) - 1;
+      }
+      this.file = database.files[index];
+      this.database = database;
+    }.bind(this));
+  }
+
+  ViewHistory.prototype = {
+    _writeToStorage: function ViewHistory_writeToStorage() {
+      return new Promise(function (resolve) {
+        var databaseStr = JSON.stringify(this.database);
+
+
+        localStorage.setItem('database', databaseStr);
+        resolve();
+      }.bind(this));
+    },
+
+    _readFromStorage: function ViewHistory_readFromStorage() {
+      return new Promise(function (resolve) {
+
+        resolve(localStorage.getItem('database'));
+      });
+    },
+
+    set: function ViewHistory_set(name, val) {
+      if (!this.isInitializedPromiseResolved) {
+        return;
+      }
+      this.file[name] = val;
+      return this._writeToStorage();
+    },
+
+    setMultiple: function ViewHistory_setMultiple(properties) {
+      if (!this.isInitializedPromiseResolved) {
+        return;
+      }
+      for (var name in properties) {
+        this.file[name] = properties[name];
+      }
+      return this._writeToStorage();
+    },
+
+    get: function ViewHistory_get(name, defaultValue) {
+      if (!this.isInitializedPromiseResolved) {
+        return defaultValue;
+      }
+      return this.file[name] || defaultValue;
+    }
+  };
+
+  return ViewHistory;
+})();
+
+
+/**
+ * Creates a "search bar" given a set of DOM elements that act as controls
+ * for searching or for setting search preferences in the UI. This object
+ * also sets up the appropriate events for the controls. Actual searching
+ * is done by PDFFindController.
+ */
+var PDFFindBar = (function PDFFindBarClosure() {
+  function PDFFindBar(options) {
+    this.opened = false;
+    this.bar = options.bar || null;
+    this.toggleButton = options.toggleButton || null;
+    this.findField = options.findField || null;
+    this.highlightAll = options.highlightAllCheckbox || null;
+    this.caseSensitive = options.caseSensitiveCheckbox || null;
+    this.findMsg = options.findMsg || null;
+    this.findResultsCount = options.findResultsCount || null;
+    this.findStatusIcon = options.findStatusIcon || null;
+    this.findPreviousButton = options.findPreviousButton || null;
+    this.findNextButton = options.findNextButton || null;
+    this.findController = options.findController || null;
+
+    if (this.findController === null) {
+      throw new Error('PDFFindBar cannot be used without a ' +
+                      'PDFFindController instance.');
+    }
+
+    // Add event listeners to the DOM elements.
+    var self = this;
+    this.toggleButton.addEventListener('click', function() {
+      self.toggle();
+    });
+
+    this.findField.addEventListener('input', function() {
+      self.dispatchEvent('');
+    });
+
+    this.bar.addEventListener('keydown', function(evt) {
+      switch (evt.keyCode) {
+        case 13: // Enter
+          if (evt.target === self.findField) {
+            self.dispatchEvent('again', evt.shiftKey);
+          }
+          break;
+        case 27: // Escape
+          self.close();
+          break;
+      }
+    });
+
+    this.findPreviousButton.addEventListener('click', function() {
+      self.dispatchEvent('again', true);
+    });
+
+    this.findNextButton.addEventListener('click', function() {
+      self.dispatchEvent('again', false);
+    });
+
+    this.highlightAll.addEventListener('click', function() {
+      self.dispatchEvent('highlightallchange');
+    });
+
+    this.caseSensitive.addEventListener('click', function() {
+      self.dispatchEvent('casesensitivitychange');
+    });
+  }
+
+  PDFFindBar.prototype = {
+    dispatchEvent: function PDFFindBar_dispatchEvent(type, findPrev) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('find' + type, true, true, {
+        query: this.findField.value,
+        caseSensitive: this.caseSensitive.checked,
+        highlightAll: this.highlightAll.checked,
+        findPrevious: findPrev
+      });
+      return window.dispatchEvent(event);
+    },
+
+    updateUIState:
+        function PDFFindBar_updateUIState(state, previous, matchCount) {
+      var notFound = false;
+      var findMsg = '';
+      var status = '';
+
+      switch (state) {
+        case FindStates.FIND_FOUND:
+          break;
+
+        case FindStates.FIND_PENDING:
+          status = 'pending';
+          break;
+
+        case FindStates.FIND_NOTFOUND:
+          findMsg = 'Phrase not found';
+          notFound = true;
+          break;
+
+        case FindStates.FIND_WRAPPED:
+          if (previous) {
+            findMsg = 'Reached top of document, continued from bottom';
+          } else {
+            findMsg = 'Reached end of document, continued from top';
+          }
+          break;
+      }
+
+      if (notFound) {
+        this.findField.classList.add('notFound');
+      } else {
+        this.findField.classList.remove('notFound');
+      }
+
+      this.findField.setAttribute('data-status', status);
+      this.findMsg.textContent = findMsg;
+
+      this.updateResultsCount(matchCount);
+    },
+
+    updateResultsCount: function(matchCount) {
+      if (!this.findResultsCount) {
+        return; // no UI control is provided
+      }
+
+      // If there are no matches, hide the counter
+      if (!matchCount) {
+        this.findResultsCount.classList.add('hidden');
+        return;
+      }
+
+      // Create the match counter
+      this.findResultsCount.textContent = matchCount.toLocaleString();
+
+      // Show the counter
+      this.findResultsCount.classList.remove('hidden');
+    },
+
+    open: function PDFFindBar_open() {
+      if (!this.opened) {
+        this.opened = true;
+        this.toggleButton.classList.add('toggled');
+        this.bar.classList.remove('hidden');
+      }
+      this.findField.select();
+      this.findField.focus();
+    },
+
+    close: function PDFFindBar_close() {
+      if (!this.opened) {
+        return;
+      }
+      this.opened = false;
+      this.toggleButton.classList.remove('toggled');
+      this.bar.classList.add('hidden');
+      this.findController.active = false;
+    },
+
+    toggle: function PDFFindBar_toggle() {
+      if (this.opened) {
+        this.close();
+      } else {
+        this.open();
+      }
+    }
+  };
+  return PDFFindBar;
+})();
+
+
+var FindStates = {
+  FIND_FOUND: 0,
+  FIND_NOTFOUND: 1,
+  FIND_WRAPPED: 2,
+  FIND_PENDING: 3
+};
+
+var FIND_SCROLL_OFFSET_TOP = -50;
+var FIND_SCROLL_OFFSET_LEFT = -400;
+
+/**
+ * Provides "search" or "find" functionality for the PDF.
+ * This object actually performs the search for a given string.
+ */
+var PDFFindController = (function PDFFindControllerClosure() {
+  function PDFFindController(options) {
+    this.startedTextExtraction = false;
+    this.extractTextPromises = [];
+    this.pendingFindMatches = {};
+    this.active = false; // If active, find results will be highlighted.
+    this.pageContents = []; // Stores the text for each page.
+    this.pageMatches = [];
+    this.matchCount = 0;
+    this.selected = { // Currently selected match.
+      pageIdx: -1,
+      matchIdx: -1
+    };
+    this.offset = { // Where the find algorithm currently is in the document.
+      pageIdx: null,
+      matchIdx: null
+    };
+    this.pagesToSearch = null;
+    this.resumePageIdx = null;
+    this.state = null;
+    this.dirtyMatch = false;
+    this.findTimeout = null;
+    this.pdfViewer = options.pdfViewer || null;
+    this.integratedFind = options.integratedFind || false;
+    this.charactersToNormalize = {
+      '\u2018': '\'', // Left single quotation mark
+      '\u2019': '\'', // Right single quotation mark
+      '\u201A': '\'', // Single low-9 quotation mark
+      '\u201B': '\'', // Single high-reversed-9 quotation mark
+      '\u201C': '"', // Left double quotation mark
+      '\u201D': '"', // Right double quotation mark
+      '\u201E': '"', // Double low-9 quotation mark
+      '\u201F': '"', // Double high-reversed-9 quotation mark
+      '\u00BC': '1/4', // Vulgar fraction one quarter
+      '\u00BD': '1/2', // Vulgar fraction one half
+      '\u00BE': '3/4', // Vulgar fraction three quarters
+    };
+    this.findBar = options.findBar || null;
+
+    // Compile the regular expression for text normalization once
+    var replace = Object.keys(this.charactersToNormalize).join('');
+    this.normalizationRegex = new RegExp('[' + replace + ']', 'g');
+
+    var events = [
+      'find',
+      'findagain',
+      'findhighlightallchange',
+      'findcasesensitivitychange'
+    ];
+
+    this.firstPagePromise = new Promise(function (resolve) {
+      this.resolveFirstPage = resolve;
+    }.bind(this));
+    this.handleEvent = this.handleEvent.bind(this);
+
+    for (var i = 0, len = events.length; i < len; i++) {
+      window.addEventListener(events[i], this.handleEvent);
+    }
+  }
+
+  PDFFindController.prototype = {
+    setFindBar: function PDFFindController_setFindBar(findBar) {
+      this.findBar = findBar;
+    },
+
+    reset: function PDFFindController_reset() {
+      this.startedTextExtraction = false;
+      this.extractTextPromises = [];
+      this.active = false;
+    },
+
+    normalize: function PDFFindController_normalize(text) {
+      var self = this;
+      return text.replace(this.normalizationRegex, function (ch) {
+        return self.charactersToNormalize[ch];
+      });
+    },
+
+    calcFindMatch: function PDFFindController_calcFindMatch(pageIndex) {
+      var pageContent = this.normalize(this.pageContents[pageIndex]);
+      var query = this.normalize(this.state.query);
+      var caseSensitive = this.state.caseSensitive;
+      var queryLen = query.length;
+
+      if (queryLen === 0) {
+        // Do nothing: the matches should be wiped out already.
+        return;
+      }
+
+      if (!caseSensitive) {
+        pageContent = pageContent.toLowerCase();
+        query = query.toLowerCase();
+      }
+
+      var matches = [];
+      var matchIdx = -queryLen;
+      while (true) {
+        matchIdx = pageContent.indexOf(query, matchIdx + queryLen);
+        if (matchIdx === -1) {
+          break;
+        }
+        matches.push(matchIdx);
+      }
+      this.pageMatches[pageIndex] = matches;
+      this.updatePage(pageIndex);
+      if (this.resumePageIdx === pageIndex) {
+        this.resumePageIdx = null;
+        this.nextPageMatch();
+      }
+
+      // Update the matches count
+      if (matches.length > 0) {
+        this.matchCount += matches.length;
+        this.updateUIResultsCount();
+      }
+    },
+
+    extractText: function PDFFindController_extractText() {
+      if (this.startedTextExtraction) {
+        return;
+      }
+      this.startedTextExtraction = true;
+
+      this.pageContents = [];
+      var extractTextPromisesResolves = [];
+      var numPages = this.pdfViewer.pagesCount;
+      for (var i = 0; i < numPages; i++) {
+        this.extractTextPromises.push(new Promise(function (resolve) {
+          extractTextPromisesResolves.push(resolve);
+        }));
+      }
+
+      var self = this;
+      function extractPageText(pageIndex) {
+        self.pdfViewer.getPageTextContent(pageIndex).then(
+          function textContentResolved(textContent) {
+            var textItems = textContent.items;
+            var str = [];
+
+            for (var i = 0, len = textItems.length; i < len; i++) {
+              str.push(textItems[i].str);
+            }
+
+            // Store the pageContent as a string.
+            self.pageContents.push(str.join(''));
+
+            extractTextPromisesResolves[pageIndex](pageIndex);
+            if ((pageIndex + 1) < self.pdfViewer.pagesCount) {
+              extractPageText(pageIndex + 1);
+            }
+          }
+        );
+      }
+      extractPageText(0);
+    },
+
+    handleEvent: function PDFFindController_handleEvent(e) {
+      if (this.state === null || e.type !== 'findagain') {
+        this.dirtyMatch = true;
+      }
+      this.state = e.detail;
+      this.updateUIState(FindStates.FIND_PENDING);
+
+      this.firstPagePromise.then(function() {
+        this.extractText();
+
+        clearTimeout(this.findTimeout);
+        if (e.type === 'find') {
+          // Only trigger the find action after 250ms of silence.
+          this.findTimeout = setTimeout(this.nextMatch.bind(this), 250);
+        } else {
+          this.nextMatch();
+        }
+      }.bind(this));
+    },
+
+    updatePage: function PDFFindController_updatePage(index) {
+      if (this.selected.pageIdx === index) {
+        // If the page is selected, scroll the page into view, which triggers
+        // rendering the page, which adds the textLayer. Once the textLayer is
+        // build, it will scroll onto the selected match.
+        this.pdfViewer.scrollPageIntoView(index + 1);
+      }
+
+      var page = this.pdfViewer.getPageView(index);
+      if (page.textLayer) {
+        page.textLayer.updateMatches();
+      }
+    },
+
+    nextMatch: function PDFFindController_nextMatch() {
+      var previous = this.state.findPrevious;
+      var currentPageIndex = this.pdfViewer.currentPageNumber - 1;
+      var numPages = this.pdfViewer.pagesCount;
+
+      this.active = true;
+
+      if (this.dirtyMatch) {
+        // Need to recalculate the matches, reset everything.
+        this.dirtyMatch = false;
+        this.selected.pageIdx = this.selected.matchIdx = -1;
+        this.offset.pageIdx = currentPageIndex;
+        this.offset.matchIdx = null;
+        this.hadMatch = false;
+        this.resumePageIdx = null;
+        this.pageMatches = [];
+        this.matchCount = 0;
+        var self = this;
+
+        for (var i = 0; i < numPages; i++) {
+          // Wipe out any previous highlighted matches.
+          this.updatePage(i);
+
+          // As soon as the text is extracted start finding the matches.
+          if (!(i in this.pendingFindMatches)) {
+            this.pendingFindMatches[i] = true;
+            this.extractTextPromises[i].then(function(pageIdx) {
+              delete self.pendingFindMatches[pageIdx];
+              self.calcFindMatch(pageIdx);
+            });
+          }
+        }
+      }
+
+      // If there's no query there's no point in searching.
+      if (this.state.query === '') {
+        this.updateUIState(FindStates.FIND_FOUND);
+        return;
+      }
+
+      // If we're waiting on a page, we return since we can't do anything else.
+      if (this.resumePageIdx) {
+        return;
+      }
+
+      var offset = this.offset;
+      // Keep track of how many pages we should maximally iterate through.
+      this.pagesToSearch = numPages;
+      // If there's already a matchIdx that means we are iterating through a
+      // page's matches.
+      if (offset.matchIdx !== null) {
+        var numPageMatches = this.pageMatches[offset.pageIdx].length;
+        if ((!previous && offset.matchIdx + 1 < numPageMatches) ||
+            (previous && offset.matchIdx > 0)) {
+          // The simple case; we just have advance the matchIdx to select
+          // the next match on the page.
+          this.hadMatch = true;
+          offset.matchIdx = (previous ? offset.matchIdx - 1 :
+                                        offset.matchIdx + 1);
+          this.updateMatch(true);
+          return;
+        }
+        // We went beyond the current page's matches, so we advance to
+        // the next page.
+        this.advanceOffsetPage(previous);
+      }
+      // Start searching through the page.
+      this.nextPageMatch();
+    },
+
+    matchesReady: function PDFFindController_matchesReady(matches) {
+      var offset = this.offset;
+      var numMatches = matches.length;
+      var previous = this.state.findPrevious;
+
+      if (numMatches) {
+        // There were matches for the page, so initialize the matchIdx.
+        this.hadMatch = true;
+        offset.matchIdx = (previous ? numMatches - 1 : 0);
+        this.updateMatch(true);
+        return true;
+      } else {
+        // No matches, so attempt to search the next page.
+        this.advanceOffsetPage(previous);
+        if (offset.wrapped) {
+          offset.matchIdx = null;
+          if (this.pagesToSearch < 0) {
+            // No point in wrapping again, there were no matches.
+            this.updateMatch(false);
+            // while matches were not found, searching for a page
+            // with matches should nevertheless halt.
+            return true;
+          }
+        }
+        // Matches were not found (and searching is not done).
+        return false;
+      }
+    },
+
+    /**
+     * The method is called back from the text layer when match presentation
+     * is updated.
+     * @param {number} pageIndex - page index.
+     * @param {number} index - match index.
+     * @param {Array} elements - text layer div elements array.
+     * @param {number} beginIdx - start index of the div array for the match.
+     * @param {number} endIdx - end index of the div array for the match.
+     */
+    updateMatchPosition: function PDFFindController_updateMatchPosition(
+        pageIndex, index, elements, beginIdx, endIdx) {
+      if (this.selected.matchIdx === index &&
+          this.selected.pageIdx === pageIndex) {
+        var spot = {
+          top: FIND_SCROLL_OFFSET_TOP,
+          left: FIND_SCROLL_OFFSET_LEFT
+        };
+        scrollIntoView(elements[beginIdx], spot,
+                       /* skipOverflowHiddenElements = */ true);
+      }
+    },
+
+    nextPageMatch: function PDFFindController_nextPageMatch() {
+      if (this.resumePageIdx !== null) {
+        console.error('There can only be one pending page.');
+      }
+      do {
+        var pageIdx = this.offset.pageIdx;
+        var matches = this.pageMatches[pageIdx];
+        if (!matches) {
+          // The matches don't exist yet for processing by "matchesReady",
+          // so set a resume point for when they do exist.
+          this.resumePageIdx = pageIdx;
+          break;
+        }
+      } while (!this.matchesReady(matches));
+    },
+
+    advanceOffsetPage: function PDFFindController_advanceOffsetPage(previous) {
+      var offset = this.offset;
+      var numPages = this.extractTextPromises.length;
+      offset.pageIdx = (previous ? offset.pageIdx - 1 : offset.pageIdx + 1);
+      offset.matchIdx = null;
+
+      this.pagesToSearch--;
+
+      if (offset.pageIdx >= numPages || offset.pageIdx < 0) {
+        offset.pageIdx = (previous ? numPages - 1 : 0);
+        offset.wrapped = true;
+      }
+    },
+
+    updateMatch: function PDFFindController_updateMatch(found) {
+      var state = FindStates.FIND_NOTFOUND;
+      var wrapped = this.offset.wrapped;
+      this.offset.wrapped = false;
+
+      if (found) {
+        var previousPage = this.selected.pageIdx;
+        this.selected.pageIdx = this.offset.pageIdx;
+        this.selected.matchIdx = this.offset.matchIdx;
+        state = (wrapped ? FindStates.FIND_WRAPPED : FindStates.FIND_FOUND);
+        // Update the currently selected page to wipe out any selected matches.
+        if (previousPage !== -1 && previousPage !== this.selected.pageIdx) {
+          this.updatePage(previousPage);
+        }
+      }
+
+      this.updateUIState(state, this.state.findPrevious);
+      if (this.selected.pageIdx !== -1) {
+        this.updatePage(this.selected.pageIdx);
+      }
+    },
+
+    updateUIResultsCount:
+        function PDFFindController_updateUIResultsCount() {
+      if (this.findBar === null) {
+        throw new Error('PDFFindController is not initialized with a ' +
+          'PDFFindBar instance.');
+      }
+      this.findBar.updateResultsCount(this.matchCount);
+    },
+
+    updateUIState: function PDFFindController_updateUIState(state, previous) {
+      if (this.integratedFind) {
+        FirefoxCom.request('updateFindControlState',
+                           { result: state, findPrevious: previous });
+        return;
+      }
+      if (this.findBar === null) {
+        throw new Error('PDFFindController is not initialized with a ' +
+                        'PDFFindBar instance.');
+      }
+      this.findBar.updateUIState(state, previous, this.matchCount);
+    }
+  };
+  return PDFFindController;
+})();
+
+
+/**
+ * Performs navigation functions inside PDF, such as opening specified page,
+ * or destination.
+ * @class
+ * @implements {IPDFLinkService}
+ */
+var PDFLinkService = (function () {
+  /**
+   * @constructs PDFLinkService
+   */
+  function PDFLinkService() {
+    this.baseUrl = null;
+    this.pdfDocument = null;
+    this.pdfViewer = null;
+    this.pdfHistory = null;
+
+    this._pagesRefCache = null;
+  }
+
+  PDFLinkService.prototype = {
+    setDocument: function PDFLinkService_setDocument(pdfDocument, baseUrl) {
+      this.baseUrl = baseUrl;
+      this.pdfDocument = pdfDocument;
+      this._pagesRefCache = Object.create(null);
+    },
+
+    setViewer: function PDFLinkService_setViewer(pdfViewer) {
+      this.pdfViewer = pdfViewer;
+    },
+
+    setHistory: function PDFLinkService_setHistory(pdfHistory) {
+      this.pdfHistory = pdfHistory;
+    },
+
+    /**
+     * @returns {number}
+     */
+    get pagesCount() {
+      return this.pdfDocument.numPages;
+    },
+
+    /**
+     * @returns {number}
+     */
+    get page() {
+      return this.pdfViewer.currentPageNumber;
+    },
+
+    /**
+     * @param {number} value
+     */
+    set page(value) {
+      this.pdfViewer.currentPageNumber = value;
+    },
+
+    /**
+     * @param dest - The PDF destination object.
+     */
+    navigateTo: function PDFLinkService_navigateTo(dest) {
+      var destString = '';
+      var self = this;
+
+      var goToDestination = function(destRef) {
+        // dest array looks like that: <page-ref> </XYZ|FitXXX> <args..>
+        var pageNumber = destRef instanceof Object ?
+          self._pagesRefCache[destRef.num + ' ' + destRef.gen + ' R'] :
+          (destRef + 1);
+        if (pageNumber) {
+          if (pageNumber > self.pagesCount) {
+            pageNumber = self.pagesCount;
+          }
+          self.pdfViewer.scrollPageIntoView(pageNumber, dest);
+
+          if (self.pdfHistory) {
+            // Update the browsing history.
+            self.pdfHistory.push({
+              dest: dest,
+              hash: destString,
+              page: pageNumber
+            });
+          }
+        } else {
+          self.pdfDocument.getPageIndex(destRef).then(function (pageIndex) {
+            var pageNum = pageIndex + 1;
+            var cacheKey = destRef.num + ' ' + destRef.gen + ' R';
+            self._pagesRefCache[cacheKey] = pageNum;
+            goToDestination(destRef);
+          });
+        }
+      };
+
+      var destinationPromise;
+      if (typeof dest === 'string') {
+        destString = dest;
+        destinationPromise = this.pdfDocument.getDestination(dest);
+      } else {
+        destinationPromise = Promise.resolve(dest);
+      }
+      destinationPromise.then(function(destination) {
+        dest = destination;
+        if (!(destination instanceof Array)) {
+          return; // invalid destination
+        }
+        goToDestination(destination[0]);
+      });
+    },
+
+    /**
+     * @param dest - The PDF destination object.
+     * @returns {string} The hyperlink to the PDF object.
+     */
+    getDestinationHash: function PDFLinkService_getDestinationHash(dest) {
+      if (typeof dest === 'string') {
+        return this.getAnchorUrl('#' + escape(dest));
+      }
+      if (dest instanceof Array) {
+        var destRef = dest[0]; // see navigateTo method for dest format
+        var pageNumber = destRef instanceof Object ?
+          this._pagesRefCache[destRef.num + ' ' + destRef.gen + ' R'] :
+          (destRef + 1);
+        if (pageNumber) {
+          var pdfOpenParams = this.getAnchorUrl('#page=' + pageNumber);
+          var destKind = dest[1];
+          if (typeof destKind === 'object' && 'name' in destKind &&
+              destKind.name === 'XYZ') {
+            var scale = (dest[4] || this.pdfViewer.currentScaleValue);
+            var scaleNumber = parseFloat(scale);
+            if (scaleNumber) {
+              scale = scaleNumber * 100;
+            }
+            pdfOpenParams += '&zoom=' + scale;
+            if (dest[2] || dest[3]) {
+              pdfOpenParams += ',' + (dest[2] || 0) + ',' + (dest[3] || 0);
+            }
+          }
+          return pdfOpenParams;
+        }
+      }
+      return this.getAnchorUrl('');
+    },
+
+    /**
+     * Prefix the full url on anchor links to make sure that links are resolved
+     * relative to the current URL instead of the one defined in <base href>.
+     * @param {String} anchor The anchor hash, including the #.
+     * @returns {string} The hyperlink to the PDF object.
+     */
+    getAnchorUrl: function PDFLinkService_getAnchorUrl(anchor) {
+      return (this.baseUrl || '') + anchor;
+    },
+
+    /**
+     * @param {string} hash
+     */
+    setHash: function PDFLinkService_setHash(hash) {
+      if (hash.indexOf('=') >= 0) {
+        var params = parseQueryString(hash);
+        // borrowing syntax from "Parameters for Opening PDF Files"
+        if ('nameddest' in params) {
+          if (this.pdfHistory) {
+            this.pdfHistory.updateNextHashParam(params.nameddest);
+          }
+          this.navigateTo(params.nameddest);
+          return;
+        }
+        var pageNumber, dest;
+        if ('page' in params) {
+          pageNumber = (params.page | 0) || 1;
+        }
+        if ('zoom' in params) {
+          // Build the destination array.
+          var zoomArgs = params.zoom.split(','); // scale,left,top
+          var zoomArg = zoomArgs[0];
+          var zoomArgNumber = parseFloat(zoomArg);
+
+          if (zoomArg.indexOf('Fit') === -1) {
+            // If the zoomArg is a number, it has to get divided by 100. If it's
+            // a string, it should stay as it is.
+            dest = [null, { name: 'XYZ' },
+                    zoomArgs.length > 1 ? (zoomArgs[1] | 0) : null,
+                    zoomArgs.length > 2 ? (zoomArgs[2] | 0) : null,
+                    (zoomArgNumber ? zoomArgNumber / 100 : zoomArg)];
+          } else {
+            if (zoomArg === 'Fit' || zoomArg === 'FitB') {
+              dest = [null, { name: zoomArg }];
+            } else if ((zoomArg === 'FitH' || zoomArg === 'FitBH') ||
+                       (zoomArg === 'FitV' || zoomArg === 'FitBV')) {
+              dest = [null, { name: zoomArg },
+                      zoomArgs.length > 1 ? (zoomArgs[1] | 0) : null];
+            } else if (zoomArg === 'FitR') {
+              if (zoomArgs.length !== 5) {
+                console.error('PDFLinkService_setHash: ' +
+                              'Not enough parameters for \'FitR\'.');
+              } else {
+                dest = [null, { name: zoomArg },
+                        (zoomArgs[1] | 0), (zoomArgs[2] | 0),
+                        (zoomArgs[3] | 0), (zoomArgs[4] | 0)];
+              }
+            } else {
+              console.error('PDFLinkService_setHash: \'' + zoomArg +
+                            '\' is not a valid zoom value.');
+            }
+          }
+        }
+        if (dest) {
+          this.pdfViewer.scrollPageIntoView(pageNumber || this.page, dest);
+        } else if (pageNumber) {
+          this.page = pageNumber; // simple page
+        }
+        if ('pagemode' in params) {
+          var event = document.createEvent('CustomEvent');
+          event.initCustomEvent('pagemode', true, true, {
+            mode: params.pagemode,
+          });
+          this.pdfViewer.container.dispatchEvent(event);
+        }
+      } else if (/^\d+$/.test(hash)) { // page number
+        this.page = hash;
+      } else { // named destination
+        if (this.pdfHistory) {
+          this.pdfHistory.updateNextHashParam(unescape(hash));
+        }
+        this.navigateTo(unescape(hash));
+      }
+    },
+
+    /**
+     * @param {string} action
+     */
+    executeNamedAction: function PDFLinkService_executeNamedAction(action) {
+      // See PDF reference, table 8.45 - Named action
+      switch (action) {
+        case 'GoBack':
+          if (this.pdfHistory) {
+            this.pdfHistory.back();
+          }
+          break;
+
+        case 'GoForward':
+          if (this.pdfHistory) {
+            this.pdfHistory.forward();
+          }
+          break;
+
+        case 'NextPage':
+          this.page++;
+          break;
+
+        case 'PrevPage':
+          this.page--;
+          break;
+
+        case 'LastPage':
+          this.page = this.pagesCount;
+          break;
+
+        case 'FirstPage':
+          this.page = 1;
+          break;
+
+        default:
+          break; // No action according to spec
+      }
+
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('namedaction', true, true, {
+        action: action
+      });
+      this.pdfViewer.container.dispatchEvent(event);
+    },
+
+    /**
+     * @param {number} pageNum - page number.
+     * @param {Object} pageRef - reference to the page.
+     */
+    cachePageRef: function PDFLinkService_cachePageRef(pageNum, pageRef) {
+      var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
+      this._pagesRefCache[refStr] = pageNum;
+    }
+  };
+
+  return PDFLinkService;
+})();
+
+
+var PDFHistory = (function () {
+  function PDFHistory(options) {
+    this.linkService = options.linkService;
+
+    this.initialized = false;
+    this.initialDestination = null;
+    this.initialBookmark = null;
+  }
+
+  PDFHistory.prototype = {
+    /**
+     * @param {string} fingerprint
+     * @param {IPDFLinkService} linkService
+     */
+    initialize: function pdfHistoryInitialize(fingerprint) {
+      this.initialized = true;
+      this.reInitialized = false;
+      this.allowHashChange = true;
+      this.historyUnlocked = true;
+      this.isViewerInPresentationMode = false;
+
+      this.previousHash = window.location.hash.substring(1);
+      this.currentBookmark = '';
+      this.currentPage = 0;
+      this.updatePreviousBookmark = false;
+      this.previousBookmark = '';
+      this.previousPage = 0;
+      this.nextHashParam = '';
+
+      this.fingerprint = fingerprint;
+      this.currentUid = this.uid = 0;
+      this.current = {};
+
+      var state = window.history.state;
+      if (this._isStateObjectDefined(state)) {
+        // This corresponds to navigating back to the document
+        // from another page in the browser history.
+        if (state.target.dest) {
+          this.initialDestination = state.target.dest;
+        } else {
+          this.initialBookmark = state.target.hash;
+        }
+        this.currentUid = state.uid;
+        this.uid = state.uid + 1;
+        this.current = state.target;
+      } else {
+        // This corresponds to the loading of a new document.
+        if (state && state.fingerprint &&
+          this.fingerprint !== state.fingerprint) {
+          // Reinitialize the browsing history when a new document
+          // is opened in the web viewer.
+          this.reInitialized = true;
+        }
+        this._pushOrReplaceState({fingerprint: this.fingerprint}, true);
+      }
+
+      var self = this;
+      window.addEventListener('popstate', function pdfHistoryPopstate(evt) {
+        if (!self.historyUnlocked) {
+          return;
+        }
+        if (evt.state) {
+          // Move back/forward in the history.
+          self._goTo(evt.state);
+          return;
+        }
+
+        // If the state is not set, then the user tried to navigate to a
+        // different hash by manually editing the URL and pressing Enter, or by
+        // clicking on an in-page link (e.g. the "current view" link).
+        // Save the current view state to the browser history.
+
+        // Note: In Firefox, history.null could also be null after an in-page
+        // navigation to the same URL, and without dispatching the popstate
+        // event: https://bugzilla.mozilla.org/show_bug.cgi?id=1183881
+
+        if (self.uid === 0) {
+          // Replace the previous state if it was not explicitly set.
+          var previousParams = (self.previousHash && self.currentBookmark &&
+            self.previousHash !== self.currentBookmark) ?
+            {hash: self.currentBookmark, page: self.currentPage} :
+            {page: 1};
+          replacePreviousHistoryState(previousParams, function() {
+            updateHistoryWithCurrentHash();
+          });
+        } else {
+          updateHistoryWithCurrentHash();
+        }
+      }, false);
+
+
+      function updateHistoryWithCurrentHash() {
+        self.previousHash = window.location.hash.slice(1);
+        self._pushToHistory({hash: self.previousHash}, false, true);
+        self._updatePreviousBookmark();
+      }
+
+      function replacePreviousHistoryState(params, callback) {
+        // To modify the previous history entry, the following happens:
+        // 1. history.back()
+        // 2. _pushToHistory, which calls history.replaceState( ... )
+        // 3. history.forward()
+        // Because a navigation via the history API does not immediately update
+        // the history state, the popstate event is used for synchronization.
+        self.historyUnlocked = false;
+
+        // Suppress the hashchange event to avoid side effects caused by
+        // navigating back and forward.
+        self.allowHashChange = false;
+        window.addEventListener('popstate', rewriteHistoryAfterBack);
+        history.back();
+
+        function rewriteHistoryAfterBack() {
+          window.removeEventListener('popstate', rewriteHistoryAfterBack);
+          window.addEventListener('popstate', rewriteHistoryAfterForward);
+          self._pushToHistory(params, false, true);
+          history.forward();
+        }
+        function rewriteHistoryAfterForward() {
+          window.removeEventListener('popstate', rewriteHistoryAfterForward);
+          self.allowHashChange = true;
+          self.historyUnlocked = true;
+          callback();
+        }
+      }
+
+      function pdfHistoryBeforeUnload() {
+        var previousParams = self._getPreviousParams(null, true);
+        if (previousParams) {
+          var replacePrevious = (!self.current.dest &&
+          self.current.hash !== self.previousHash);
+          self._pushToHistory(previousParams, false, replacePrevious);
+          self._updatePreviousBookmark();
+        }
+        // Remove the event listener when navigating away from the document,
+        // since 'beforeunload' prevents Firefox from caching the document.
+        window.removeEventListener('beforeunload', pdfHistoryBeforeUnload,
+                                   false);
+      }
+
+      window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
+
+      window.addEventListener('pageshow', function pdfHistoryPageShow(evt) {
+        // If the entire viewer (including the PDF file) is cached in
+        // the browser, we need to reattach the 'beforeunload' event listener
+        // since the 'DOMContentLoaded' event is not fired on 'pageshow'.
+        window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
+      }, false);
+
+      window.addEventListener('presentationmodechanged', function(e) {
+        self.isViewerInPresentationMode = !!e.detail.active;
+      });
+    },
+
+    clearHistoryState: function pdfHistory_clearHistoryState() {
+      this._pushOrReplaceState(null, true);
+    },
+
+    _isStateObjectDefined: function pdfHistory_isStateObjectDefined(state) {
+      return (state && state.uid >= 0 &&
+      state.fingerprint && this.fingerprint === state.fingerprint &&
+      state.target && state.target.hash) ? true : false;
+    },
+
+    _pushOrReplaceState: function pdfHistory_pushOrReplaceState(stateObj,
+                                                                replace) {
+      if (replace) {
+        window.history.replaceState(stateObj, '', document.URL);
+      } else {
+        window.history.pushState(stateObj, '', document.URL);
+      }
+    },
+
+    get isHashChangeUnlocked() {
+      if (!this.initialized) {
+        return true;
+      }
+      return this.allowHashChange;
+    },
+
+    _updatePreviousBookmark: function pdfHistory_updatePreviousBookmark() {
+      if (this.updatePreviousBookmark &&
+        this.currentBookmark && this.currentPage) {
+        this.previousBookmark = this.currentBookmark;
+        this.previousPage = this.currentPage;
+        this.updatePreviousBookmark = false;
+      }
+    },
+
+    updateCurrentBookmark: function pdfHistoryUpdateCurrentBookmark(bookmark,
+                                                                    pageNum) {
+      if (this.initialized) {
+        this.currentBookmark = bookmark.substring(1);
+        this.currentPage = pageNum | 0;
+        this._updatePreviousBookmark();
+      }
+    },
+
+    updateNextHashParam: function pdfHistoryUpdateNextHashParam(param) {
+      if (this.initialized) {
+        this.nextHashParam = param;
+      }
+    },
+
+    push: function pdfHistoryPush(params, isInitialBookmark) {
+      if (!(this.initialized && this.historyUnlocked)) {
+        return;
+      }
+      if (params.dest && !params.hash) {
+        params.hash = (this.current.hash && this.current.dest &&
+        this.current.dest === params.dest) ?
+          this.current.hash :
+          this.linkService.getDestinationHash(params.dest).split('#')[1];
+      }
+      if (params.page) {
+        params.page |= 0;
+      }
+      if (isInitialBookmark) {
+        var target = window.history.state.target;
+        if (!target) {
+          // Invoked when the user specifies an initial bookmark,
+          // thus setting initialBookmark, when the document is loaded.
+          this._pushToHistory(params, false);
+          this.previousHash = window.location.hash.substring(1);
+        }
+        this.updatePreviousBookmark = this.nextHashParam ? false : true;
+        if (target) {
+          // If the current document is reloaded,
+          // avoid creating duplicate entries in the history.
+          this._updatePreviousBookmark();
+        }
+        return;
+      }
+      if (this.nextHashParam) {
+        if (this.nextHashParam === params.hash) {
+          this.nextHashParam = null;
+          this.updatePreviousBookmark = true;
+          return;
+        } else {
+          this.nextHashParam = null;
+        }
+      }
+
+      if (params.hash) {
+        if (this.current.hash) {
+          if (this.current.hash !== params.hash) {
+            this._pushToHistory(params, true);
+          } else {
+            if (!this.current.page && params.page) {
+              this._pushToHistory(params, false, true);
+            }
+            this.updatePreviousBookmark = true;
+          }
+        } else {
+          this._pushToHistory(params, true);
+        }
+      } else if (this.current.page && params.page &&
+        this.current.page !== params.page) {
+        this._pushToHistory(params, true);
+      }
+    },
+
+    _getPreviousParams: function pdfHistory_getPreviousParams(onlyCheckPage,
+                                                              beforeUnload) {
+      if (!(this.currentBookmark && this.currentPage)) {
+        return null;
+      } else if (this.updatePreviousBookmark) {
+        this.updatePreviousBookmark = false;
+      }
+      if (this.uid > 0 && !(this.previousBookmark && this.previousPage)) {
+        // Prevent the history from getting stuck in the current state,
+        // effectively preventing the user from going back/forward in
+        // the history.
+        //
+        // This happens if the current position in the document didn't change
+        // when the history was previously updated. The reasons for this are
+        // either:
+        // 1. The current zoom value is such that the document does not need to,
+        //    or cannot, be scrolled to display the destination.
+        // 2. The previous destination is broken, and doesn't actally point to a
+        //    position within the document.
+        //    (This is either due to a bad PDF generator, or the user making a
+        //     mistake when entering a destination in the hash parameters.)
+        return null;
+      }
+      if ((!this.current.dest && !onlyCheckPage) || beforeUnload) {
+        if (this.previousBookmark === this.currentBookmark) {
+          return null;
+        }
+      } else if (this.current.page || onlyCheckPage) {
+        if (this.previousPage === this.currentPage) {
+          return null;
+        }
+      } else {
+        return null;
+      }
+      var params = {hash: this.currentBookmark, page: this.currentPage};
+      if (this.isViewerInPresentationMode) {
+        params.hash = null;
+      }
+      return params;
+    },
+
+    _stateObj: function pdfHistory_stateObj(params) {
+      return {fingerprint: this.fingerprint, uid: this.uid, target: params};
+    },
+
+    _pushToHistory: function pdfHistory_pushToHistory(params,
+                                                      addPrevious, overwrite) {
+      if (!this.initialized) {
+        return;
+      }
+      if (!params.hash && params.page) {
+        params.hash = ('page=' + params.page);
+      }
+      if (addPrevious && !overwrite) {
+        var previousParams = this._getPreviousParams();
+        if (previousParams) {
+          var replacePrevious = (!this.current.dest &&
+          this.current.hash !== this.previousHash);
+          this._pushToHistory(previousParams, false, replacePrevious);
+        }
+      }
+      this._pushOrReplaceState(this._stateObj(params),
+        (overwrite || this.uid === 0));
+      this.currentUid = this.uid++;
+      this.current = params;
+      this.updatePreviousBookmark = true;
+    },
+
+    _goTo: function pdfHistory_goTo(state) {
+      if (!(this.initialized && this.historyUnlocked &&
+        this._isStateObjectDefined(state))) {
+        return;
+      }
+      if (!this.reInitialized && state.uid < this.currentUid) {
+        var previousParams = this._getPreviousParams(true);
+        if (previousParams) {
+          this._pushToHistory(this.current, false);
+          this._pushToHistory(previousParams, false);
+          this.currentUid = state.uid;
+          window.history.back();
+          return;
+        }
+      }
+      this.historyUnlocked = false;
+
+      if (state.target.dest) {
+        this.linkService.navigateTo(state.target.dest);
+      } else {
+        this.linkService.setHash(state.target.hash);
+      }
+      this.currentUid = state.uid;
+      if (state.uid > this.uid) {
+        this.uid = state.uid;
+      }
+      this.current = state.target;
+      this.updatePreviousBookmark = true;
+
+      var currentHash = window.location.hash.substring(1);
+      if (this.previousHash !== currentHash) {
+        this.allowHashChange = false;
+      }
+      this.previousHash = currentHash;
+
+      this.historyUnlocked = true;
+    },
+
+    back: function pdfHistoryBack() {
+      this.go(-1);
+    },
+
+    forward: function pdfHistoryForward() {
+      this.go(1);
+    },
+
+    go: function pdfHistoryGo(direction) {
+      if (this.initialized && this.historyUnlocked) {
+        var state = window.history.state;
+        if (direction === -1 && state && state.uid > 0) {
+          window.history.back();
+        } else if (direction === 1 && state && state.uid < (this.uid - 1)) {
+          window.history.forward();
+        }
+      }
+    }
+  };
+
+  return PDFHistory;
+})();
+
+
+var SecondaryToolbar = {
+  opened: false,
+  previousContainerHeight: null,
+  newContainerHeight: null,
+
+  initialize: function secondaryToolbarInitialize(options) {
+    this.toolbar = options.toolbar;
+    this.buttonContainer = this.toolbar.firstElementChild;
+
+    // Define the toolbar buttons.
+    this.toggleButton = options.toggleButton;
+    this.presentationModeButton = options.presentationModeButton;
+    this.openFile = options.openFile;
+    this.print = options.print;
+    this.download = options.download;
+    this.viewBookmark = options.viewBookmark;
+    this.firstPage = options.firstPage;
+    this.lastPage = options.lastPage;
+    this.pageRotateCw = options.pageRotateCw;
+    this.pageRotateCcw = options.pageRotateCcw;
+    this.documentPropertiesButton = options.documentPropertiesButton;
+
+    // Attach the event listeners.
+    var elements = [
+      // Button to toggle the visibility of the secondary toolbar:
+      { element: this.toggleButton, handler: this.toggle },
+      // All items within the secondary toolbar
+      // (except for toggleHandTool, hand_tool.js is responsible for it):
+      { element: this.presentationModeButton,
+        handler: this.presentationModeClick },
+      { element: this.openFile, handler: this.openFileClick },
+      { element: this.print, handler: this.printClick },
+      { element: this.download, handler: this.downloadClick },
+      { element: this.viewBookmark, handler: this.viewBookmarkClick },
+      { element: this.firstPage, handler: this.firstPageClick },
+      { element: this.lastPage, handler: this.lastPageClick },
+      { element: this.pageRotateCw, handler: this.pageRotateCwClick },
+      { element: this.pageRotateCcw, handler: this.pageRotateCcwClick },
+      { element: this.documentPropertiesButton,
+        handler: this.documentPropertiesClick }
+    ];
+
+    for (var item in elements) {
+      var element = elements[item].element;
+      if (element) {
+        element.addEventListener('click', elements[item].handler.bind(this));
+      }
+    }
+  },
+
+  // Event handling functions.
+  presentationModeClick: function secondaryToolbarPresentationModeClick(evt) {
+    PDFViewerApplication.requestPresentationMode();
+    this.close();
+  },
+
+  openFileClick: function secondaryToolbarOpenFileClick(evt) {
+    document.getElementById('fileInput').click();
+    this.close();
+  },
+
+  printClick: function secondaryToolbarPrintClick(evt) {
+    window.print();
+    this.close();
+  },
+
+  downloadClick: function secondaryToolbarDownloadClick(evt) {
+    PDFViewerApplication.download();
+    this.close();
+  },
+
+  viewBookmarkClick: function secondaryToolbarViewBookmarkClick(evt) {
+    this.close();
+  },
+
+  firstPageClick: function secondaryToolbarFirstPageClick(evt) {
+    PDFViewerApplication.page = 1;
+    this.close();
+  },
+
+  lastPageClick: function secondaryToolbarLastPageClick(evt) {
+    if (PDFViewerApplication.pdfDocument) {
+      PDFViewerApplication.page = PDFViewerApplication.pagesCount;
+    }
+    this.close();
+  },
+
+  pageRotateCwClick: function secondaryToolbarPageRotateCwClick(evt) {
+    PDFViewerApplication.rotatePages(90);
+  },
+
+  pageRotateCcwClick: function secondaryToolbarPageRotateCcwClick(evt) {
+    PDFViewerApplication.rotatePages(-90);
+  },
+
+  documentPropertiesClick: function secondaryToolbarDocumentPropsClick(evt) {
+    PDFViewerApplication.pdfDocumentProperties.open();
+    this.close();
+  },
+
+  // Misc. functions for interacting with the toolbar.
+  setMaxHeight: function secondaryToolbarSetMaxHeight(container) {
+    if (!container || !this.buttonContainer) {
+      return;
+    }
+    this.newContainerHeight = container.clientHeight;
+    if (this.previousContainerHeight === this.newContainerHeight) {
+      return;
+    }
+    this.buttonContainer.setAttribute('style',
+      'max-height: ' + (this.newContainerHeight - SCROLLBAR_PADDING) + 'px;');
+    this.previousContainerHeight = this.newContainerHeight;
+  },
+
+  open: function secondaryToolbarOpen() {
+    if (this.opened) {
+      return;
+    }
+    this.opened = true;
+    this.toggleButton.classList.add('toggled');
+    this.toolbar.classList.remove('hidden');
+  },
+
+  close: function secondaryToolbarClose(target) {
+    if (!this.opened) {
+      return;
+    } else if (target && !this.toolbar.contains(target)) {
+      return;
+    }
+    this.opened = false;
+    this.toolbar.classList.add('hidden');
+    this.toggleButton.classList.remove('toggled');
+  },
+
+  toggle: function secondaryToolbarToggle() {
+    if (this.opened) {
+      this.close();
+    } else {
+      this.open();
+    }
+  }
+};
+
+
+var DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS = 1500; // in ms
+var DELAY_BEFORE_HIDING_CONTROLS = 3000; // in ms
+var ACTIVE_SELECTOR = 'pdfPresentationMode';
+var CONTROLS_SELECTOR = 'pdfPresentationModeControls';
+
+/**
+ * @typedef {Object} PDFPresentationModeOptions
+ * @property {HTMLDivElement} container - The container for the viewer element.
+ * @property {HTMLDivElement} viewer - (optional) The viewer element.
+ * @property {PDFViewer} pdfViewer - The document viewer.
+ * @property {PDFThumbnailViewer} pdfThumbnailViewer - (optional) The thumbnail
+ *   viewer.
+ * @property {Array} contextMenuItems - (optional) The menuitems that are added
+ *   to the context menu in Presentation Mode.
+ */
+
+/**
+ * @class
+ */
+var PDFPresentationMode = (function PDFPresentationModeClosure() {
+  /**
+   * @constructs PDFPresentationMode
+   * @param {PDFPresentationModeOptions} options
+   */
+  function PDFPresentationMode(options) {
+    this.container = options.container;
+    this.viewer = options.viewer || options.container.firstElementChild;
+    this.pdfViewer = options.pdfViewer;
+    this.pdfThumbnailViewer = options.pdfThumbnailViewer || null;
+    var contextMenuItems = options.contextMenuItems || null;
+
+    this.active = false;
+    this.args = null;
+    this.contextMenuOpen = false;
+    this.mouseScrollTimeStamp = 0;
+    this.mouseScrollDelta = 0;
+
+    if (contextMenuItems) {
+      for (var i = 0, ii = contextMenuItems.length; i < ii; i++) {
+        var item = contextMenuItems[i];
+        item.element.addEventListener('click', function (handler) {
+          this.contextMenuOpen = false;
+          handler();
+        }.bind(this, item.handler));
+      }
+    }
+  }
+
+  PDFPresentationMode.prototype = {
+    /**
+     * Request the browser to enter fullscreen mode.
+     * @returns {boolean} Indicating if the request was successful.
+     */
+    request: function PDFPresentationMode_request() {
+      if (this.switchInProgress || this.active ||
+          !this.viewer.hasChildNodes()) {
+        return false;
+      }
+      this._addFullscreenChangeListeners();
+      this._setSwitchInProgress();
+      this._notifyStateChange();
+
+      if (this.container.requestFullscreen) {
+        this.container.requestFullscreen();
+      } else if (this.container.mozRequestFullScreen) {
+        this.container.mozRequestFullScreen();
+      } else if (this.container.webkitRequestFullscreen) {
+        this.container.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
+      } else if (this.container.msRequestFullscreen) {
+        this.container.msRequestFullscreen();
+      } else {
+        return false;
+      }
+
+      this.args = {
+        page: this.pdfViewer.currentPageNumber,
+        previousScale: this.pdfViewer.currentScaleValue,
+      };
+
+      return true;
+    },
+
+    /**
+     * Switches page when the user scrolls (using a scroll wheel or a touchpad)
+     * with large enough motion, to prevent accidental page switches.
+     * @param {number} delta - The delta value from the mouse event.
+     */
+    mouseScroll: function PDFPresentationMode_mouseScroll(delta) {
+      if (!this.active) {
+        return;
+      }
+      var MOUSE_SCROLL_COOLDOWN_TIME = 50;
+      var PAGE_SWITCH_THRESHOLD = 120;
+      var PageSwitchDirection = {
+        UP: -1,
+        DOWN: 1
+      };
+
+      var currentTime = (new Date()).getTime();
+      var storedTime = this.mouseScrollTimeStamp;
+
+      // If we've already switched page, avoid accidentally switching again.
+      if (currentTime > storedTime &&
+          currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
+        return;
+      }
+      // If the scroll direction changed, reset the accumulated scroll delta.
+      if ((this.mouseScrollDelta > 0 && delta < 0) ||
+          (this.mouseScrollDelta < 0 && delta > 0)) {
+        this._resetMouseScrollState();
+      }
+      this.mouseScrollDelta += delta;
+
+      if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
+        var pageSwitchDirection = (this.mouseScrollDelta > 0) ?
+          PageSwitchDirection.UP : PageSwitchDirection.DOWN;
+        var page = this.pdfViewer.currentPageNumber;
+        this._resetMouseScrollState();
+
+        // If we're at the first/last page, we don't need to do anything.
+        if ((page === 1 && pageSwitchDirection === PageSwitchDirection.UP) ||
+            (page === this.pdfViewer.pagesCount &&
+             pageSwitchDirection === PageSwitchDirection.DOWN)) {
+          return;
+        }
+        this.pdfViewer.currentPageNumber = (page + pageSwitchDirection);
+        this.mouseScrollTimeStamp = currentTime;
+      }
+    },
+
+    get isFullscreen() {
+      return !!(document.fullscreenElement ||
+                document.mozFullScreen ||
+                document.webkitIsFullScreen ||
+                document.msFullscreenElement);
+    },
+
+    /**
+     * @private
+     */
+    _notifyStateChange: function PDFPresentationMode_notifyStateChange() {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('presentationmodechanged', true, true, {
+        active: this.active,
+        switchInProgress: !!this.switchInProgress
+      });
+      window.dispatchEvent(event);
+    },
+
+    /**
+     * Used to initialize a timeout when requesting Presentation Mode,
+     * i.e. when the browser is requested to enter fullscreen mode.
+     * This timeout is used to prevent the current page from being scrolled
+     * partially, or completely, out of view when entering Presentation Mode.
+     * NOTE: This issue seems limited to certain zoom levels (e.g. page-width).
+     * @private
+     */
+    _setSwitchInProgress: function PDFPresentationMode_setSwitchInProgress() {
+      if (this.switchInProgress) {
+        clearTimeout(this.switchInProgress);
+      }
+      this.switchInProgress = setTimeout(function switchInProgressTimeout() {
+        this._removeFullscreenChangeListeners();
+        delete this.switchInProgress;
+        this._notifyStateChange();
+      }.bind(this), DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS);
+    },
+
+    /**
+     * @private
+     */
+    _resetSwitchInProgress:
+        function PDFPresentationMode_resetSwitchInProgress() {
+      if (this.switchInProgress) {
+        clearTimeout(this.switchInProgress);
+        delete this.switchInProgress;
+      }
+    },
+
+    /**
+     * @private
+     */
+    _enter: function PDFPresentationMode_enter() {
+      this.active = true;
+      this._resetSwitchInProgress();
+      this._notifyStateChange();
+      this.container.classList.add(ACTIVE_SELECTOR);
+
+      // Ensure that the correct page is scrolled into view when entering
+      // Presentation Mode, by waiting until fullscreen mode in enabled.
+      setTimeout(function enterPresentationModeTimeout() {
+        this.pdfViewer.currentPageNumber = this.args.page;
+        this.pdfViewer.currentScaleValue = 'page-fit';
+      }.bind(this), 0);
+
+      this._addWindowListeners();
+      this._showControls();
+      this.contextMenuOpen = false;
+      this.container.setAttribute('contextmenu', 'viewerContextMenu');
+
+      // Text selection is disabled in Presentation Mode, thus it's not possible
+      // for the user to deselect text that is selected (e.g. with "Select all")
+      // when entering Presentation Mode, hence we remove any active selection.
+      window.getSelection().removeAllRanges();
+    },
+
+    /**
+     * @private
+     */
+    _exit: function PDFPresentationMode_exit() {
+      var page = this.pdfViewer.currentPageNumber;
+      this.container.classList.remove(ACTIVE_SELECTOR);
+
+      // Ensure that the correct page is scrolled into view when exiting
+      // Presentation Mode, by waiting until fullscreen mode is disabled.
+      setTimeout(function exitPresentationModeTimeout() {
+        this.active = false;
+        this._removeFullscreenChangeListeners();
+        this._notifyStateChange();
+
+        this.pdfViewer.currentScaleValue = this.args.previousScale;
+        this.pdfViewer.currentPageNumber = page;
+        this.args = null;
+      }.bind(this), 0);
+
+      this._removeWindowListeners();
+      this._hideControls();
+      this._resetMouseScrollState();
+      this.container.removeAttribute('contextmenu');
+      this.contextMenuOpen = false;
+
+      if (this.pdfThumbnailViewer) {
+        this.pdfThumbnailViewer.ensureThumbnailVisible(page);
+      }
+    },
+
+    /**
+     * @private
+     */
+    _mouseDown: function PDFPresentationMode_mouseDown(evt) {
+      if (this.contextMenuOpen) {
+        this.contextMenuOpen = false;
+        evt.preventDefault();
+        return;
+      }
+      if (evt.button === 0) {
+        // Enable clicking of links in presentation mode. Please note:
+        // Only links pointing to destinations in the current PDF document work.
+        var isInternalLink = (evt.target.href &&
+                              evt.target.classList.contains('internalLink'));
+        if (!isInternalLink) {
+          // Unless an internal link was clicked, advance one page.
+          evt.preventDefault();
+          this.pdfViewer.currentPageNumber += (evt.shiftKey ? -1 : 1);
+        }
+      }
+    },
+
+    /**
+     * @private
+     */
+    _contextMenu: function PDFPresentationMode_contextMenu() {
+      this.contextMenuOpen = true;
+    },
+
+    /**
+     * @private
+     */
+    _showControls: function PDFPresentationMode_showControls() {
+      if (this.controlsTimeout) {
+        clearTimeout(this.controlsTimeout);
+      } else {
+        this.container.classList.add(CONTROLS_SELECTOR);
+      }
+      this.controlsTimeout = setTimeout(function showControlsTimeout() {
+        this.container.classList.remove(CONTROLS_SELECTOR);
+        delete this.controlsTimeout;
+      }.bind(this), DELAY_BEFORE_HIDING_CONTROLS);
+    },
+
+    /**
+     * @private
+     */
+    _hideControls: function PDFPresentationMode_hideControls() {
+      if (!this.controlsTimeout) {
+        return;
+      }
+      clearTimeout(this.controlsTimeout);
+      this.container.classList.remove(CONTROLS_SELECTOR);
+      delete this.controlsTimeout;
+    },
+
+    /**
+     * Resets the properties used for tracking mouse scrolling events.
+     * @private
+     */
+    _resetMouseScrollState:
+        function PDFPresentationMode_resetMouseScrollState() {
+      this.mouseScrollTimeStamp = 0;
+      this.mouseScrollDelta = 0;
+    },
+
+    /**
+     * @private
+     */
+    _addWindowListeners: function PDFPresentationMode_addWindowListeners() {
+      this.showControlsBind = this._showControls.bind(this);
+      this.mouseDownBind = this._mouseDown.bind(this);
+      this.resetMouseScrollStateBind = this._resetMouseScrollState.bind(this);
+      this.contextMenuBind = this._contextMenu.bind(this);
+
+      window.addEventListener('mousemove', this.showControlsBind);
+      window.addEventListener('mousedown', this.mouseDownBind);
+      window.addEventListener('keydown', this.resetMouseScrollStateBind);
+      window.addEventListener('contextmenu', this.contextMenuBind);
+    },
+
+    /**
+     * @private
+     */
+    _removeWindowListeners:
+        function PDFPresentationMode_removeWindowListeners() {
+      window.removeEventListener('mousemove', this.showControlsBind);
+      window.removeEventListener('mousedown', this.mouseDownBind);
+      window.removeEventListener('keydown', this.resetMouseScrollStateBind);
+      window.removeEventListener('contextmenu', this.contextMenuBind);
+
+      delete this.showControlsBind;
+      delete this.mouseDownBind;
+      delete this.resetMouseScrollStateBind;
+      delete this.contextMenuBind;
+    },
+
+    /**
+     * @private
+     */
+    _fullscreenChange: function PDFPresentationMode_fullscreenChange() {
+      if (this.isFullscreen) {
+        this._enter();
+      } else {
+        this._exit();
+      }
+    },
+
+    /**
+     * @private
+     */
+    _addFullscreenChangeListeners:
+        function PDFPresentationMode_addFullscreenChangeListeners() {
+      this.fullscreenChangeBind = this._fullscreenChange.bind(this);
+
+      window.addEventListener('fullscreenchange', this.fullscreenChangeBind);
+      window.addEventListener('mozfullscreenchange', this.fullscreenChangeBind);
+      window.addEventListener('webkitfullscreenchange',
+                              this.fullscreenChangeBind);
+      window.addEventListener('MSFullscreenChange', this.fullscreenChangeBind);
+    },
+
+    /**
+     * @private
+     */
+    _removeFullscreenChangeListeners:
+        function PDFPresentationMode_removeFullscreenChangeListeners() {
+      window.removeEventListener('fullscreenchange', this.fullscreenChangeBind);
+      window.removeEventListener('mozfullscreenchange',
+                                 this.fullscreenChangeBind);
+      window.removeEventListener('webkitfullscreenchange',
+                              this.fullscreenChangeBind);
+      window.removeEventListener('MSFullscreenChange',
+                                 this.fullscreenChangeBind);
+
+      delete this.fullscreenChangeBind;
+    }
+  };
+
+  return PDFPresentationMode;
+})();
+
+
+
+var GrabToPan = (function GrabToPanClosure() {
+  /**
+   * Construct a GrabToPan instance for a given HTML element.
+   * @param options.element {Element}
+   * @param options.ignoreTarget {function} optional. See `ignoreTarget(node)`
+   * @param options.onActiveChanged {function(boolean)} optional. Called
+   *  when grab-to-pan is (de)activated. The first argument is a boolean that
+   *  shows whether grab-to-pan is activated.
+   */
+  function GrabToPan(options) {
+    this.element = options.element;
+    this.document = options.element.ownerDocument;
+    if (typeof options.ignoreTarget === 'function') {
+      this.ignoreTarget = options.ignoreTarget;
+    }
+    this.onActiveChanged = options.onActiveChanged;
+
+    // Bind the contexts to ensure that `this` always points to
+    // the GrabToPan instance.
+    this.activate = this.activate.bind(this);
+    this.deactivate = this.deactivate.bind(this);
+    this.toggle = this.toggle.bind(this);
+    this._onmousedown = this._onmousedown.bind(this);
+    this._onmousemove = this._onmousemove.bind(this);
+    this._endPan = this._endPan.bind(this);
+
+    // This overlay will be inserted in the document when the mouse moves during
+    // a grab operation, to ensure that the cursor has the desired appearance.
+    var overlay = this.overlay = document.createElement('div');
+    overlay.className = 'grab-to-pan-grabbing';
+  }
+  GrabToPan.prototype = {
+    /**
+     * Class name of element which can be grabbed
+     */
+    CSS_CLASS_GRAB: 'grab-to-pan-grab',
+
+    /**
+     * Bind a mousedown event to the element to enable grab-detection.
+     */
+    activate: function GrabToPan_activate() {
+      if (!this.active) {
+        this.active = true;
+        this.element.addEventListener('mousedown', this._onmousedown, true);
+        this.element.classList.add(this.CSS_CLASS_GRAB);
+        if (this.onActiveChanged) {
+          this.onActiveChanged(true);
+        }
+      }
+    },
+
+    /**
+     * Removes all events. Any pending pan session is immediately stopped.
+     */
+    deactivate: function GrabToPan_deactivate() {
+      if (this.active) {
+        this.active = false;
+        this.element.removeEventListener('mousedown', this._onmousedown, true);
+        this._endPan();
+        this.element.classList.remove(this.CSS_CLASS_GRAB);
+        if (this.onActiveChanged) {
+          this.onActiveChanged(false);
+        }
+      }
+    },
+
+    toggle: function GrabToPan_toggle() {
+      if (this.active) {
+        this.deactivate();
+      } else {
+        this.activate();
+      }
+    },
+
+    /**
+     * Whether to not pan if the target element is clicked.
+     * Override this method to change the default behaviour.
+     *
+     * @param node {Element} The target of the event
+     * @return {boolean} Whether to not react to the click event.
+     */
+    ignoreTarget: function GrabToPan_ignoreTarget(node) {
+      // Use matchesSelector to check whether the clicked element
+      // is (a child of) an input element / link
+      return node[matchesSelector](
+        'a[href], a[href] *, input, textarea, button, button *, select, option'
+      );
+    },
+
+    /**
+     * @private
+     */
+    _onmousedown: function GrabToPan__onmousedown(event) {
+      if (event.button !== 0 || this.ignoreTarget(event.target)) {
+        return;
+      }
+      if (event.originalTarget) {
+        try {
+          /* jshint expr:true */
+          event.originalTarget.tagName;
+        } catch (e) {
+          // Mozilla-specific: element is a scrollbar (XUL element)
+          return;
+        }
+      }
+
+      this.scrollLeftStart = this.element.scrollLeft;
+      this.scrollTopStart = this.element.scrollTop;
+      this.clientXStart = event.clientX;
+      this.clientYStart = event.clientY;
+      this.document.addEventListener('mousemove', this._onmousemove, true);
+      this.document.addEventListener('mouseup', this._endPan, true);
+      // When a scroll event occurs before a mousemove, assume that the user
+      // dragged a scrollbar (necessary for Opera Presto, Safari and IE)
+      // (not needed for Chrome/Firefox)
+      this.element.addEventListener('scroll', this._endPan, true);
+      event.preventDefault();
+      event.stopPropagation();
+      this.document.documentElement.classList.add(this.CSS_CLASS_GRABBING);
+
+      var focusedElement = document.activeElement;
+      if (focusedElement && !focusedElement.contains(event.target)) {
+        focusedElement.blur();
+      }
+    },
+
+    /**
+     * @private
+     */
+    _onmousemove: function GrabToPan__onmousemove(event) {
+      this.element.removeEventListener('scroll', this._endPan, true);
+      if (isLeftMouseReleased(event)) {
+        this._endPan();
+        return;
+      }
+      var xDiff = event.clientX - this.clientXStart;
+      var yDiff = event.clientY - this.clientYStart;
+      this.element.scrollTop = this.scrollTopStart - yDiff;
+      this.element.scrollLeft = this.scrollLeftStart - xDiff;
+      if (!this.overlay.parentNode) {
+        document.body.appendChild(this.overlay);
+      }
+    },
+
+    /**
+     * @private
+     */
+    _endPan: function GrabToPan__endPan() {
+      this.element.removeEventListener('scroll', this._endPan, true);
+      this.document.removeEventListener('mousemove', this._onmousemove, true);
+      this.document.removeEventListener('mouseup', this._endPan, true);
+      if (this.overlay.parentNode) {
+        this.overlay.parentNode.removeChild(this.overlay);
+      }
+    }
+  };
+
+  // Get the correct (vendor-prefixed) name of the matches method.
+  var matchesSelector;
+  ['webkitM', 'mozM', 'msM', 'oM', 'm'].some(function(prefix) {
+    var name = prefix + 'atches';
+    if (name in document.documentElement) {
+      matchesSelector = name;
+    }
+    name += 'Selector';
+    if (name in document.documentElement) {
+      matchesSelector = name;
+    }
+    return matchesSelector; // If found, then truthy, and [].some() ends.
+  });
+
+  // Browser sniffing because it's impossible to feature-detect
+  // whether event.which for onmousemove is reliable
+  var isNotIEorIsIE10plus = !document.documentMode || document.documentMode > 9;
+  var chrome = window.chrome;
+  var isChrome15OrOpera15plus = chrome && (chrome.webstore || chrome.app);
+  //                                       ^ Chrome 15+       ^ Opera 15+
+  var isSafari6plus = /Apple/.test(navigator.vendor) &&
+                      /Version\/([6-9]\d*|[1-5]\d+)/.test(navigator.userAgent);
+
+  /**
+   * Whether the left mouse is not pressed.
+   * @param event {MouseEvent}
+   * @return {boolean} True if the left mouse button is not pressed.
+   *                   False if unsure or if the left mouse button is pressed.
+   */
+  function isLeftMouseReleased(event) {
+    if ('buttons' in event && isNotIEorIsIE10plus) {
+      // http://www.w3.org/TR/DOM-Level-3-Events/#events-MouseEvent-buttons
+      // Firefox 15+
+      // Internet Explorer 10+
+      return !(event.buttons | 1);
+    }
+    if (isChrome15OrOpera15plus || isSafari6plus) {
+      // Chrome 14+
+      // Opera 15+
+      // Safari 6.0+
+      return event.which === 0;
+    }
+  }
+
+  return GrabToPan;
+})();
+
+var HandTool = {
+  initialize: function handToolInitialize(options) {
+    var toggleHandTool = options.toggleHandTool;
+    this.handTool = new GrabToPan({
+      element: options.container,
+      onActiveChanged: function(isActive) {
+        if (!toggleHandTool) {
+          return;
+        }
+        if (isActive) {
+          toggleHandTool.title = 'Disable hand tool';
+          toggleHandTool.firstElementChild.textContent = 'Disable hand tool';
+        } else {
+          toggleHandTool.title = 'Enable hand tool';
+          toggleHandTool.firstElementChild.textContent = 'Enable hand tool';
+        }
+      }
+    });
+    if (toggleHandTool) {
+      toggleHandTool.addEventListener('click', this.toggle.bind(this), false);
+
+      window.addEventListener('localized', function (evt) {
+        Preferences.get('enableHandToolOnLoad').then(function resolved(value) {
+          if (value) {
+            this.handTool.activate();
+          }
+        }.bind(this), function rejected(reason) {});
+      }.bind(this));
+
+      window.addEventListener('presentationmodechanged', function (evt) {
+        if (evt.detail.switchInProgress) {
+          return;
+        }
+        if (evt.detail.active) {
+          this.enterPresentationMode();
+        } else {
+          this.exitPresentationMode();
+        }
+      }.bind(this));
+    }
+  },
+
+  toggle: function handToolToggle() {
+    this.handTool.toggle();
+    SecondaryToolbar.close();
+  },
+
+  enterPresentationMode: function handToolEnterPresentationMode() {
+    if (this.handTool.active) {
+      this.wasActive = true;
+      this.handTool.deactivate();
+    }
+  },
+
+  exitPresentationMode: function handToolExitPresentationMode() {
+    if (this.wasActive) {
+      this.wasActive = null;
+      this.handTool.activate();
+    }
+  }
+};
+
+
+var OverlayManager = {
+  overlays: {},
+  active: null,
+
+  /**
+   * @param {string} name The name of the overlay that is registered. This must
+   *                 be equal to the ID of the overlay's DOM element.
+   * @param {function} callerCloseMethod (optional) The method that, if present,
+   *                   will call OverlayManager.close from the Object
+   *                   registering the overlay. Access to this method is
+   *                   necessary in order to run cleanup code when e.g.
+   *                   the overlay is force closed. The default is null.
+   * @param {boolean} canForceClose (optional) Indicates if opening the overlay
+   *                  will close an active overlay. The default is false.
+   * @returns {Promise} A promise that is resolved when the overlay has been
+   *                    registered.
+   */
+  register: function overlayManagerRegister(name,
+                                            callerCloseMethod, canForceClose) {
+    return new Promise(function (resolve) {
+      var element, container;
+      if (!name || !(element = document.getElementById(name)) ||
+          !(container = element.parentNode)) {
+        throw new Error('Not enough parameters.');
+      } else if (this.overlays[name]) {
+        throw new Error('The overlay is already registered.');
+      }
+      this.overlays[name] = { element: element,
+                              container: container,
+                              callerCloseMethod: (callerCloseMethod || null),
+                              canForceClose: (canForceClose || false) };
+      resolve();
+    }.bind(this));
+  },
+
+  /**
+   * @param {string} name The name of the overlay that is unregistered.
+   * @returns {Promise} A promise that is resolved when the overlay has been
+   *                    unregistered.
+   */
+  unregister: function overlayManagerUnregister(name) {
+    return new Promise(function (resolve) {
+      if (!this.overlays[name]) {
+        throw new Error('The overlay does not exist.');
+      } else if (this.active === name) {
+        throw new Error('The overlay cannot be removed while it is active.');
+      }
+      delete this.overlays[name];
+
+      resolve();
+    }.bind(this));
+  },
+
+  /**
+   * @param {string} name The name of the overlay that should be opened.
+   * @returns {Promise} A promise that is resolved when the overlay has been
+   *                    opened.
+   */
+  open: function overlayManagerOpen(name) {
+    return new Promise(function (resolve) {
+      if (!this.overlays[name]) {
+        throw new Error('The overlay does not exist.');
+      } else if (this.active) {
+        if (this.overlays[name].canForceClose) {
+          this._closeThroughCaller();
+        } else if (this.active === name) {
+          throw new Error('The overlay is already active.');
+        } else {
+          throw new Error('Another overlay is currently active.');
+        }
+      }
+      this.active = name;
+      this.overlays[this.active].element.classList.remove('hidden');
+      this.overlays[this.active].container.classList.remove('hidden');
+
+      window.addEventListener('keydown', this._keyDown);
+      resolve();
+    }.bind(this));
+  },
+
+  /**
+   * @param {string} name The name of the overlay that should be closed.
+   * @returns {Promise} A promise that is resolved when the overlay has been
+   *                    closed.
+   */
+  close: function overlayManagerClose(name) {
+    return new Promise(function (resolve) {
+      if (!this.overlays[name]) {
+        throw new Error('The overlay does not exist.');
+      } else if (!this.active) {
+        throw new Error('The overlay is currently not active.');
+      } else if (this.active !== name) {
+        throw new Error('Another overlay is currently active.');
+      }
+      this.overlays[this.active].container.classList.add('hidden');
+      this.overlays[this.active].element.classList.add('hidden');
+      this.active = null;
+
+      window.removeEventListener('keydown', this._keyDown);
+      resolve();
+    }.bind(this));
+  },
+
+  /**
+   * @private
+   */
+  _keyDown: function overlayManager_keyDown(evt) {
+    var self = OverlayManager;
+    if (self.active && evt.keyCode === 27) { // Esc key.
+      self._closeThroughCaller();
+      evt.preventDefault();
+    }
+  },
+
+  /**
+   * @private
+   */
+  _closeThroughCaller: function overlayManager_closeThroughCaller() {
+    if (this.overlays[this.active].callerCloseMethod) {
+      this.overlays[this.active].callerCloseMethod();
+    }
+    if (this.active) {
+      this.close(this.active);
+    }
+  }
+};
+
+
+var PasswordPrompt = {
+  overlayName: null,
+  updatePassword: null,
+  reason: null,
+  passwordField: null,
+  passwordText: null,
+  passwordSubmit: null,
+  passwordCancel: null,
+
+  initialize: function secondaryToolbarInitialize(options) {
+    this.overlayName = options.overlayName;
+    this.passwordField = options.passwordField;
+    this.passwordText = options.passwordText;
+    this.passwordSubmit = options.passwordSubmit;
+    this.passwordCancel = options.passwordCancel;
+
+    // Attach the event listeners.
+    this.passwordSubmit.addEventListener('click',
+      this.verifyPassword.bind(this));
+
+    this.passwordCancel.addEventListener('click', this.close.bind(this));
+
+    this.passwordField.addEventListener('keydown', function (e) {
+      if (e.keyCode === 13) { // Enter key
+        this.verifyPassword();
+      }
+    }.bind(this));
+
+    OverlayManager.register(this.overlayName, this.close.bind(this), true);
+  },
+
+  open: function passwordPromptOpen() {
+    OverlayManager.open(this.overlayName).then(function () {
+      this.passwordField.type = 'password';
+      this.passwordField.focus();
+
+      var promptString = 'Enter the password to open this PDF file.';
+
+      if (this.reason === PDFJS.PasswordResponses.INCORRECT_PASSWORD) {
+        promptString = 'Invalid password. Please try again.';
+      }
+
+      this.passwordText.textContent = promptString;
+    }.bind(this));
+  },
+
+  close: function passwordPromptClose() {
+    OverlayManager.close(this.overlayName).then(function () {
+      this.passwordField.value = '';
+      this.passwordField.type = '';
+    }.bind(this));
+  },
+
+  verifyPassword: function passwordPromptVerifyPassword() {
+    var password = this.passwordField.value;
+    if (password && password.length > 0) {
+      this.close();
+      return this.updatePassword(password);
+    }
+  }
+};
+
+
+/**
+ * @typedef {Object} PDFDocumentPropertiesOptions
+ * @property {string} overlayName - Name/identifier for the overlay.
+ * @property {Object} fields - Names and elements of the overlay's fields.
+ * @property {HTMLButtonElement} closeButton - Button for closing the overlay.
+ */
+
+/**
+ * @class
+ */
+var PDFDocumentProperties = (function PDFDocumentPropertiesClosure() {
+  /**
+   * @constructs PDFDocumentProperties
+   * @param {PDFDocumentPropertiesOptions} options
+   */
+  function PDFDocumentProperties(options) {
+    this.fields = options.fields;
+    this.overlayName = options.overlayName;
+
+    this.rawFileSize = 0;
+    this.url = null;
+    this.pdfDocument = null;
+
+    // Bind the event listener for the Close button.
+    if (options.closeButton) {
+      options.closeButton.addEventListener('click', this.close.bind(this));
+    }
+
+    this.dataAvailablePromise = new Promise(function (resolve) {
+      this.resolveDataAvailable = resolve;
+    }.bind(this));
+
+    OverlayManager.register(this.overlayName, this.close.bind(this));
+  }
+
+  PDFDocumentProperties.prototype = {
+    /**
+     * Open the document properties overlay.
+     */
+    open: function PDFDocumentProperties_open() {
+      Promise.all([OverlayManager.open(this.overlayName),
+                   this.dataAvailablePromise]).then(function () {
+        this._getProperties();
+      }.bind(this));
+    },
+
+    /**
+     * Close the document properties overlay.
+     */
+    close: function PDFDocumentProperties_close() {
+      OverlayManager.close(this.overlayName);
+    },
+
+    /**
+     * Set the file size of the PDF document. This method is used to
+     * update the file size in the document properties overlay once it
+     * is known so we do not have to wait until the entire file is loaded.
+     *
+     * @param {number} fileSize - The file size of the PDF document.
+     */
+    setFileSize: function PDFDocumentProperties_setFileSize(fileSize) {
+      if (fileSize > 0) {
+        this.rawFileSize = fileSize;
+      }
+    },
+
+    /**
+     * Set a reference to the PDF document and the URL in order
+     * to populate the overlay fields with the document properties.
+     * Note that the overlay will contain no information if this method
+     * is not called.
+     *
+     * @param {Object} pdfDocument - A reference to the PDF document.
+     * @param {string} url - The URL of the document.
+     */
+    setDocumentAndUrl:
+        function PDFDocumentProperties_setDocumentAndUrl(pdfDocument, url) {
+      this.pdfDocument = pdfDocument;
+      this.url = url;
+      this.resolveDataAvailable();
+    },
+
+    /**
+     * @private
+     */
+    _getProperties: function PDFDocumentProperties_getProperties() {
+      if (!OverlayManager.active) {
+        // If the dialog was closed before dataAvailablePromise was resolved,
+        // don't bother updating the properties.
+        return;
+      }
+      // Get the file size (if it hasn't already been set).
+      this.pdfDocument.getDownloadInfo().then(function(data) {
+        if (data.length === this.rawFileSize) {
+          return;
+        }
+        this.setFileSize(data.length);
+        this._updateUI(this.fields['fileSize'], this._parseFileSize());
+      }.bind(this));
+
+      // Get the document properties.
+      this.pdfDocument.getMetadata().then(function(data) {
+        var content = {
+          'fileName': getPDFFileNameFromURL(this.url),
+          'fileSize': this._parseFileSize(),
+          'title': data.info.Title,
+          'author': data.info.Author,
+          'subject': data.info.Subject,
+          'keywords': data.info.Keywords,
+          'creationDate': this._parseDate(data.info.CreationDate),
+          'modificationDate': this._parseDate(data.info.ModDate),
+          'creator': data.info.Creator,
+          'producer': data.info.Producer,
+          'version': data.info.PDFFormatVersion,
+          'pageCount': this.pdfDocument.numPages
+        };
+
+        // Show the properties in the dialog.
+        for (var identifier in content) {
+          this._updateUI(this.fields[identifier], content[identifier]);
+        }
+      }.bind(this));
+    },
+
+    /**
+     * @private
+     */
+    _updateUI: function PDFDocumentProperties_updateUI(field, content) {
+      if (field && content !== undefined && content !== '') {
+        field.textContent = content;
+      }
+    },
+
+    /**
+     * @private
+     */
+    _parseFileSize: function PDFDocumentProperties_parseFileSize() {
+      var fileSize = this.rawFileSize, kb = fileSize / 1024;
+      if (!kb) {
+        return;
+      } else if (kb < 1024) {
+        return kb + ' KB ' + size_b + ' bytes';
+      } else {
+        return (kb / 1024) + ' MB ' + size_b + ' bytes';
+       }
+    },
+
+    /**
+     * @private
+     */
+    _parseDate: function PDFDocumentProperties_parseDate(inputDate) {
+      // This is implemented according to the PDF specification, but note that
+      // Adobe Reader doesn't handle changing the date to universal time
+      // and doesn't use the user's time zone (they're effectively ignoring
+      // the HH' and mm' parts of the date string).
+      var dateToParse = inputDate;
+      if (dateToParse === undefined) {
+        return '';
+      }
+
+      // Remove the D: prefix if it is available.
+      if (dateToParse.substring(0,2) === 'D:') {
+        dateToParse = dateToParse.substring(2);
+      }
+
+      // Get all elements from the PDF date string.
+      // JavaScript's Date object expects the month to be between
+      // 0 and 11 instead of 1 and 12, so we're correcting for this.
+      var year = parseInt(dateToParse.substring(0,4), 10);
+      var month = parseInt(dateToParse.substring(4,6), 10) - 1;
+      var day = parseInt(dateToParse.substring(6,8), 10);
+      var hours = parseInt(dateToParse.substring(8,10), 10);
+      var minutes = parseInt(dateToParse.substring(10,12), 10);
+      var seconds = parseInt(dateToParse.substring(12,14), 10);
+      var utRel = dateToParse.substring(14,15);
+      var offsetHours = parseInt(dateToParse.substring(15,17), 10);
+      var offsetMinutes = parseInt(dateToParse.substring(18,20), 10);
+
+      // As per spec, utRel = 'Z' means equal to universal time.
+      // The other cases ('-' and '+') have to be handled here.
+      if (utRel === '-') {
+        hours += offsetHours;
+        minutes += offsetMinutes;
+      } else if (utRel === '+') {
+        hours -= offsetHours;
+        minutes -= offsetMinutes;
+      }
+
+      // Return the new date format from the user's locale.
+      var date = new Date(Date.UTC(year, month, day, hours, minutes, seconds));
+      var dateString = date.toLocaleDateString();
+      var timeString = date.toLocaleTimeString();
+      return dateString + ', ' + timeString;
+    }
+  };
+
+  return PDFDocumentProperties;
+})();
+
+
+var PresentationModeState = {
+  UNKNOWN: 0,
+  NORMAL: 1,
+  CHANGING: 2,
+  FULLSCREEN: 3,
+};
+
+var IGNORE_CURRENT_POSITION_ON_ZOOM = false;
+var DEFAULT_CACHE_SIZE = 10;
+
+
+var CLEANUP_TIMEOUT = 30000;
+
+var RenderingStates = {
+  INITIAL: 0,
+  RUNNING: 1,
+  PAUSED: 2,
+  FINISHED: 3
+};
+
+/**
+ * Controls rendering of the views for pages and thumbnails.
+ * @class
+ */
+var PDFRenderingQueue = (function PDFRenderingQueueClosure() {
+  /**
+   * @constructs
+   */
+  function PDFRenderingQueue() {
+    this.pdfViewer = null;
+    this.pdfThumbnailViewer = null;
+    this.onIdle = null;
+
+    this.highestPriorityPage = null;
+    this.idleTimeout = null;
+    this.printing = false;
+    this.isThumbnailViewEnabled = false;
+  }
+
+  PDFRenderingQueue.prototype = /** @lends PDFRenderingQueue.prototype */ {
+    /**
+     * @param {PDFViewer} pdfViewer
+     */
+    setViewer: function PDFRenderingQueue_setViewer(pdfViewer) {
+      this.pdfViewer = pdfViewer;
+    },
+
+    /**
+     * @param {PDFThumbnailViewer} pdfThumbnailViewer
+     */
+    setThumbnailViewer:
+        function PDFRenderingQueue_setThumbnailViewer(pdfThumbnailViewer) {
+      this.pdfThumbnailViewer = pdfThumbnailViewer;
+    },
+
+    /**
+     * @param {IRenderableView} view
+     * @returns {boolean}
+     */
+    isHighestPriority: function PDFRenderingQueue_isHighestPriority(view) {
+      return this.highestPriorityPage === view.renderingId;
+    },
+
+    renderHighestPriority: function
+        PDFRenderingQueue_renderHighestPriority(currentlyVisiblePages) {
+      if (this.idleTimeout) {
+        clearTimeout(this.idleTimeout);
+        this.idleTimeout = null;
+      }
+
+      // Pages have a higher priority than thumbnails, so check them first.
+      if (this.pdfViewer.forceRendering(currentlyVisiblePages)) {
+        return;
+      }
+      // No pages needed rendering so check thumbnails.
+      if (this.pdfThumbnailViewer && this.isThumbnailViewEnabled) {
+        if (this.pdfThumbnailViewer.forceRendering()) {
+          return;
+        }
+      }
+
+      if (this.printing) {
+        // If printing is currently ongoing do not reschedule cleanup.
+        return;
+      }
+
+      if (this.onIdle) {
+        this.idleTimeout = setTimeout(this.onIdle.bind(this), CLEANUP_TIMEOUT);
+      }
+    },
+
+    getHighestPriority: function
+        PDFRenderingQueue_getHighestPriority(visible, views, scrolledDown) {
+      // The state has changed figure out which page has the highest priority to
+      // render next (if any).
+      // Priority:
+      // 1 visible pages
+      // 2 if last scrolled down page after the visible pages
+      // 2 if last scrolled up page before the visible pages
+      var visibleViews = visible.views;
+
+      var numVisible = visibleViews.length;
+      if (numVisible === 0) {
+        return false;
+      }
+      for (var i = 0; i < numVisible; ++i) {
+        var view = visibleViews[i].view;
+        if (!this.isViewFinished(view)) {
+          return view;
+        }
+      }
+
+      // All the visible views have rendered, try to render next/previous pages.
+      if (scrolledDown) {
+        var nextPageIndex = visible.last.id;
+        // ID's start at 1 so no need to add 1.
+        if (views[nextPageIndex] &&
+            !this.isViewFinished(views[nextPageIndex])) {
+          return views[nextPageIndex];
+        }
+      } else {
+        var previousPageIndex = visible.first.id - 2;
+        if (views[previousPageIndex] &&
+          !this.isViewFinished(views[previousPageIndex])) {
+          return views[previousPageIndex];
+        }
+      }
+      // Everything that needs to be rendered has been.
+      return null;
+    },
+
+    /**
+     * @param {IRenderableView} view
+     * @returns {boolean}
+     */
+    isViewFinished: function PDFRenderingQueue_isViewFinished(view) {
+      return view.renderingState === RenderingStates.FINISHED;
+    },
+
+    /**
+     * Render a page or thumbnail view. This calls the appropriate function
+     * based on the views state. If the view is already rendered it will return
+     * false.
+     * @param {IRenderableView} view
+     */
+    renderView: function PDFRenderingQueue_renderView(view) {
+      var state = view.renderingState;
+      switch (state) {
+        case RenderingStates.FINISHED:
+          return false;
+        case RenderingStates.PAUSED:
+          this.highestPriorityPage = view.renderingId;
+          view.resume();
+          break;
+        case RenderingStates.RUNNING:
+          this.highestPriorityPage = view.renderingId;
+          break;
+        case RenderingStates.INITIAL:
+          this.highestPriorityPage = view.renderingId;
+          var continueRendering = function () {
+            this.renderHighestPriority();
+          }.bind(this);
+          view.draw().then(continueRendering, continueRendering);
+          break;
+      }
+      return true;
+    },
+  };
+
+  return PDFRenderingQueue;
+})();
+
+
+var TEXT_LAYER_RENDER_DELAY = 200; // ms
+
+/**
+ * @typedef {Object} PDFPageViewOptions
+ * @property {HTMLDivElement} container - The viewer element.
+ * @property {number} id - The page unique ID (normally its number).
+ * @property {number} scale - The page scale display.
+ * @property {PageViewport} defaultViewport - The page viewport.
+ * @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
+ * @property {IPDFTextLayerFactory} textLayerFactory
+ * @property {IPDFAnnotationLayerFactory} annotationLayerFactory
+ */
+
+/**
+ * @class
+ * @implements {IRenderableView}
+ */
+var PDFPageView = (function PDFPageViewClosure() {
+  /**
+   * @constructs PDFPageView
+   * @param {PDFPageViewOptions} options
+   */
+  function PDFPageView(options) {
+    var container = options.container;
+    var id = options.id;
+    var scale = options.scale;
+    var defaultViewport = options.defaultViewport;
+    var renderingQueue = options.renderingQueue;
+    var textLayerFactory = options.textLayerFactory;
+    var annotationLayerFactory = options.annotationLayerFactory;
+
+    this.id = id;
+    this.renderingId = 'page' + id;
+
+    this.rotation = 0;
+    this.scale = scale || DEFAULT_SCALE;
+    this.viewport = defaultViewport;
+    this.pdfPageRotate = defaultViewport.rotation;
+    this.hasRestrictedScaling = false;
+
+    this.renderingQueue = renderingQueue;
+    this.textLayerFactory = textLayerFactory;
+    this.annotationLayerFactory = annotationLayerFactory;
+
+    this.renderingState = RenderingStates.INITIAL;
+    this.resume = null;
+
+    this.onBeforeDraw = null;
+    this.onAfterDraw = null;
+
+    this.textLayer = null;
+
+    this.zoomLayer = null;
+
+    this.annotationLayer = null;
+
+    var div = document.createElement('div');
+    div.id = 'pageContainer' + this.id;
+    div.className = 'page';
+    div.style.width = Math.floor(this.viewport.width) + 'px';
+    div.style.height = Math.floor(this.viewport.height) + 'px';
+    div.setAttribute('data-page-number', this.id);
+    this.div = div;
+
+    container.appendChild(div);
+  }
+
+  PDFPageView.prototype = {
+    setPdfPage: function PDFPageView_setPdfPage(pdfPage) {
+      this.pdfPage = pdfPage;
+      this.pdfPageRotate = pdfPage.rotate;
+      var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
+      this.viewport = pdfPage.getViewport(this.scale * CSS_UNITS,
+                                          totalRotation);
+      this.stats = pdfPage.stats;
+      this.reset();
+    },
+
+    destroy: function PDFPageView_destroy() {
+      this.zoomLayer = null;
+      this.reset();
+      if (this.pdfPage) {
+        this.pdfPage.cleanup();
+      }
+    },
+
+    reset: function PDFPageView_reset(keepZoomLayer, keepAnnotations) {
+      if (this.renderTask) {
+        this.renderTask.cancel();
+      }
+      this.resume = null;
+      this.renderingState = RenderingStates.INITIAL;
+
+      var div = this.div;
+      div.style.width = Math.floor(this.viewport.width) + 'px';
+      div.style.height = Math.floor(this.viewport.height) + 'px';
+
+      var childNodes = div.childNodes;
+      var currentZoomLayerNode = (keepZoomLayer && this.zoomLayer) || null;
+      var currentAnnotationNode = (keepAnnotations && this.annotationLayer &&
+                                   this.annotationLayer.div) || null;
+      for (var i = childNodes.length - 1; i >= 0; i--) {
+        var node = childNodes[i];
+        if (currentZoomLayerNode === node || currentAnnotationNode === node) {
+          continue;
+        }
+        div.removeChild(node);
+      }
+      div.removeAttribute('data-loaded');
+
+      if (currentAnnotationNode) {
+        // Hide annotationLayer until all elements are resized
+        // so they are not displayed on the already-resized page
+        this.annotationLayer.hide();
+      } else {
+        this.annotationLayer = null;
+      }
+
+      if (this.canvas && !currentZoomLayerNode) {
+        // Zeroing the width and height causes Firefox to release graphics
+        // resources immediately, which can greatly reduce memory consumption.
+        this.canvas.width = 0;
+        this.canvas.height = 0;
+        delete this.canvas;
+      }
+
+      this.loadingIconDiv = document.createElement('div');
+      this.loadingIconDiv.className = 'loadingIcon';
+      div.appendChild(this.loadingIconDiv);
+    },
+
+    update: function PDFPageView_update(scale, rotation) {
+      this.scale = scale || this.scale;
+
+      if (typeof rotation !== 'undefined') {
+        this.rotation = rotation;
+      }
+
+      var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
+      this.viewport = this.viewport.clone({
+        scale: this.scale * CSS_UNITS,
+        rotation: totalRotation
+      });
+
+      var isScalingRestricted = false;
+      if (this.canvas && PDFJS.maxCanvasPixels > 0) {
+        var outputScale = this.outputScale;
+        var pixelsInViewport = this.viewport.width * this.viewport.height;
+        var maxScale = Math.sqrt(PDFJS.maxCanvasPixels / pixelsInViewport);
+        if (((Math.floor(this.viewport.width) * outputScale.sx) | 0) *
+            ((Math.floor(this.viewport.height) * outputScale.sy) | 0) >
+            PDFJS.maxCanvasPixels) {
+          isScalingRestricted = true;
+        }
+      }
+
+      if (this.canvas) {
+        if (PDFJS.useOnlyCssZoom ||
+            (this.hasRestrictedScaling && isScalingRestricted)) {
+          this.cssTransform(this.canvas, true);
+
+          var event = document.createEvent('CustomEvent');
+          event.initCustomEvent('pagerendered', true, true, {
+            pageNumber: this.id,
+            cssTransform: true,
+          });
+          this.div.dispatchEvent(event);
+
+          return;
+        }
+        if (!this.zoomLayer) {
+          this.zoomLayer = this.canvas.parentNode;
+          this.zoomLayer.style.position = 'absolute';
+        }
+      }
+      if (this.zoomLayer) {
+        this.cssTransform(this.zoomLayer.firstChild);
+      }
+      this.reset(/* keepZoomLayer = */ true, /* keepAnnotations = */ true);
+    },
+
+    /**
+     * Called when moved in the parent's container.
+     */
+    updatePosition: function PDFPageView_updatePosition() {
+      if (this.textLayer) {
+        this.textLayer.render(TEXT_LAYER_RENDER_DELAY);
+      }
+    },
+
+    cssTransform: function PDFPageView_transform(canvas, redrawAnnotations) {
+      var CustomStyle = PDFJS.CustomStyle;
+
+      // Scale canvas, canvas wrapper, and page container.
+      var width = this.viewport.width;
+      var height = this.viewport.height;
+      var div = this.div;
+      canvas.style.width = canvas.parentNode.style.width = div.style.width =
+        Math.floor(width) + 'px';
+      canvas.style.height = canvas.parentNode.style.height = div.style.height =
+        Math.floor(height) + 'px';
+      // The canvas may have been originally rotated, rotate relative to that.
+      var relativeRotation = this.viewport.rotation - canvas._viewport.rotation;
+      var absRotation = Math.abs(relativeRotation);
+      var scaleX = 1, scaleY = 1;
+      if (absRotation === 90 || absRotation === 270) {
+        // Scale x and y because of the rotation.
+        scaleX = height / width;
+        scaleY = width / height;
+      }
+      var cssTransform = 'rotate(' + relativeRotation + 'deg) ' +
+        'scale(' + scaleX + ',' + scaleY + ')';
+      CustomStyle.setProp('transform', canvas, cssTransform);
+
+      if (this.textLayer) {
+        // Rotating the text layer is more complicated since the divs inside the
+        // the text layer are rotated.
+        // TODO: This could probably be simplified by drawing the text layer in
+        // one orientation then rotating overall.
+        var textLayerViewport = this.textLayer.viewport;
+        var textRelativeRotation = this.viewport.rotation -
+          textLayerViewport.rotation;
+        var textAbsRotation = Math.abs(textRelativeRotation);
+        var scale = width / textLayerViewport.width;
+        if (textAbsRotation === 90 || textAbsRotation === 270) {
+          scale = width / textLayerViewport.height;
+        }
+        var textLayerDiv = this.textLayer.textLayerDiv;
+        var transX, transY;
+        switch (textAbsRotation) {
+          case 0:
+            transX = transY = 0;
+            break;
+          case 90:
+            transX = 0;
+            transY = '-' + textLayerDiv.style.height;
+            break;
+          case 180:
+            transX = '-' + textLayerDiv.style.width;
+            transY = '-' + textLayerDiv.style.height;
+            break;
+          case 270:
+            transX = '-' + textLayerDiv.style.width;
+            transY = 0;
+            break;
+          default:
+            console.error('Bad rotation value.');
+            break;
+        }
+        CustomStyle.setProp('transform', textLayerDiv,
+            'rotate(' + textAbsRotation + 'deg) ' +
+            'scale(' + scale + ', ' + scale + ') ' +
+            'translate(' + transX + ', ' + transY + ')');
+        CustomStyle.setProp('transformOrigin', textLayerDiv, '0% 0%');
+      }
+
+      if (redrawAnnotations && this.annotationLayer) {
+        this.annotationLayer.render(this.viewport, 'display');
+      }
+    },
+
+    get width() {
+      return this.viewport.width;
+    },
+
+    get height() {
+      return this.viewport.height;
+    },
+
+    getPagePoint: function PDFPageView_getPagePoint(x, y) {
+      return this.viewport.convertToPdfPoint(x, y);
+    },
+
+    draw: function PDFPageView_draw() {
+      if (this.renderingState !== RenderingStates.INITIAL) {
+        console.error('Must be in new state before drawing');
+      }
+
+      this.renderingState = RenderingStates.RUNNING;
+
+      var pdfPage = this.pdfPage;
+      var viewport = this.viewport;
+      var div = this.div;
+      // Wrap the canvas so if it has a css transform for highdpi the overflow
+      // will be hidden in FF.
+      var canvasWrapper = document.createElement('div');
+      canvasWrapper.style.width = div.style.width;
+      canvasWrapper.style.height = div.style.height;
+      canvasWrapper.classList.add('canvasWrapper');
+
+      var canvas = document.createElement('canvas');
+      canvas.id = 'page' + this.id;
+      // Keep the canvas hidden until the first draw callback, or until drawing
+      // is complete when `!this.renderingQueue`, to prevent black flickering.
+      canvas.setAttribute('hidden', 'hidden');
+      var isCanvasHidden = true;
+
+      canvasWrapper.appendChild(canvas);
+      if (this.annotationLayer && this.annotationLayer.div) {
+        // annotationLayer needs to stay on top
+        div.insertBefore(canvasWrapper, this.annotationLayer.div);
+      } else {
+        div.appendChild(canvasWrapper);
+      }
+      this.canvas = canvas;
+
+      canvas.mozOpaque = true;
+      var ctx = canvas.getContext('2d', {alpha: false});
+      var outputScale = getOutputScale(ctx);
+      this.outputScale = outputScale;
+
+      if (PDFJS.useOnlyCssZoom) {
+        var actualSizeViewport = viewport.clone({scale: CSS_UNITS});
+        // Use a scale that will make the canvas be the original intended size
+        // of the page.
+        outputScale.sx *= actualSizeViewport.width / viewport.width;
+        outputScale.sy *= actualSizeViewport.height / viewport.height;
+        outputScale.scaled = true;
+      }
+
+      if (PDFJS.maxCanvasPixels > 0) {
+        var pixelsInViewport = viewport.width * viewport.height;
+        var maxScale = Math.sqrt(PDFJS.maxCanvasPixels / pixelsInViewport);
+        if (outputScale.sx > maxScale || outputScale.sy > maxScale) {
+          outputScale.sx = maxScale;
+          outputScale.sy = maxScale;
+          outputScale.scaled = true;
+          this.hasRestrictedScaling = true;
+        } else {
+          this.hasRestrictedScaling = false;
+        }
+      }
+
+      var sfx = approximateFraction(outputScale.sx);
+      var sfy = approximateFraction(outputScale.sy);
+      canvas.width = roundToDivide(viewport.width * outputScale.sx, sfx[0]);
+      canvas.height = roundToDivide(viewport.height * outputScale.sy, sfy[0]);
+      canvas.style.width = roundToDivide(viewport.width, sfx[1]) + 'px';
+      canvas.style.height = roundToDivide(viewport.height, sfy[1]) + 'px';
+      // Add the viewport so it's known what it was originally drawn with.
+      canvas._viewport = viewport;
+
+      var textLayerDiv = null;
+      var textLayer = null;
+      if (this.textLayerFactory) {
+        textLayerDiv = document.createElement('div');
+        textLayerDiv.className = 'textLayer';
+        textLayerDiv.style.width = canvasWrapper.style.width;
+        textLayerDiv.style.height = canvasWrapper.style.height;
+        if (this.annotationLayer && this.annotationLayer.div) {
+          // annotationLayer needs to stay on top
+          div.insertBefore(textLayerDiv, this.annotationLayer.div);
+        } else {
+          div.appendChild(textLayerDiv);
+        }
+
+        textLayer = this.textLayerFactory.createTextLayerBuilder(textLayerDiv,
+                                                                 this.id - 1,
+                                                                 this.viewport);
+      }
+      this.textLayer = textLayer;
+
+      var resolveRenderPromise, rejectRenderPromise;
+      var promise = new Promise(function (resolve, reject) {
+        resolveRenderPromise = resolve;
+        rejectRenderPromise = reject;
+      });
+
+      // Rendering area
+
+      var self = this;
+      function pageViewDrawCallback(error) {
+        // The renderTask may have been replaced by a new one, so only remove
+        // the reference to the renderTask if it matches the one that is
+        // triggering this callback.
+        if (renderTask === self.renderTask) {
+          self.renderTask = null;
+        }
+
+        if (error === 'cancelled') {
+          rejectRenderPromise(error);
+          return;
+        }
+
+        self.renderingState = RenderingStates.FINISHED;
+
+        if (isCanvasHidden) {
+          self.canvas.removeAttribute('hidden');
+          isCanvasHidden = false;
+        }
+
+        if (self.loadingIconDiv) {
+          div.removeChild(self.loadingIconDiv);
+          delete self.loadingIconDiv;
+        }
+
+        if (self.zoomLayer) {
+          // Zeroing the width and height causes Firefox to release graphics
+          // resources immediately, which can greatly reduce memory consumption.
+          var zoomLayerCanvas = self.zoomLayer.firstChild;
+          zoomLayerCanvas.width = 0;
+          zoomLayerCanvas.height = 0;
+
+          div.removeChild(self.zoomLayer);
+          self.zoomLayer = null;
+        }
+
+        self.error = error;
+        self.stats = pdfPage.stats;
+        if (self.onAfterDraw) {
+          self.onAfterDraw();
+        }
+        var event = document.createEvent('CustomEvent');
+        event.initCustomEvent('pagerendered', true, true, {
+          pageNumber: self.id,
+          cssTransform: false,
+        });
+        div.dispatchEvent(event);
+        // This custom event is deprecated, and will be removed in the future,
+        // please use the |pagerendered| event instead.
+        var deprecatedEvent = document.createEvent('CustomEvent');
+        deprecatedEvent.initCustomEvent('pagerender', true, true, {
+          pageNumber: pdfPage.pageNumber
+        });
+        div.dispatchEvent(deprecatedEvent);
+
+        if (!error) {
+          resolveRenderPromise(undefined);
+        } else {
+          rejectRenderPromise(error);
+        }
+      }
+
+      var renderContinueCallback = null;
+      if (this.renderingQueue) {
+        renderContinueCallback = function renderContinueCallback(cont) {
+          if (!self.renderingQueue.isHighestPriority(self)) {
+            self.renderingState = RenderingStates.PAUSED;
+            self.resume = function resumeCallback() {
+              self.renderingState = RenderingStates.RUNNING;
+              cont();
+            };
+            return;
+          }
+          if (isCanvasHidden) {
+            self.canvas.removeAttribute('hidden');
+            isCanvasHidden = false;
+          }
+          cont();
+        };
+      }
+
+      var transform = !outputScale.scaled ? null :
+        [outputScale.sx, 0, 0, outputScale.sy, 0, 0];
+      var renderContext = {
+        canvasContext: ctx,
+        transform: transform,
+        viewport: this.viewport,
+        // intent: 'default', // === 'display'
+      };
+      var renderTask = this.renderTask = this.pdfPage.render(renderContext);
+      renderTask.onContinue = renderContinueCallback;
+
+      this.renderTask.promise.then(
+        function pdfPageRenderCallback() {
+          pageViewDrawCallback(null);
+          if (textLayer) {
+            self.pdfPage.getTextContent({ normalizeWhitespace: true }).then(
+              function textContentResolved(textContent) {
+                textLayer.setTextContent(textContent);
+                textLayer.render(TEXT_LAYER_RENDER_DELAY);
+              }
+            );
+          }
+        },
+        function pdfPageRenderError(error) {
+          pageViewDrawCallback(error);
+        }
+      );
+
+      if (this.annotationLayerFactory) {
+        if (!this.annotationLayer) {
+          this.annotationLayer = this.annotationLayerFactory.
+            createAnnotationLayerBuilder(div, this.pdfPage);
+        }
+        this.annotationLayer.render(this.viewport, 'display');
+      }
+      div.setAttribute('data-loaded', true);
+
+      if (self.onBeforeDraw) {
+        self.onBeforeDraw();
+      }
+      return promise;
+    },
+
+    beforePrint: function PDFPageView_beforePrint() {
+      var CustomStyle = PDFJS.CustomStyle;
+      var pdfPage = this.pdfPage;
+
+      var viewport = pdfPage.getViewport(1);
+      // Use the same hack we use for high dpi displays for printing to get
+      // better output until bug 811002 is fixed in FF.
+      var PRINT_OUTPUT_SCALE = 2;
+      var canvas = document.createElement('canvas');
+
+      // The logical size of the canvas.
+      canvas.width = Math.floor(viewport.width) * PRINT_OUTPUT_SCALE;
+      canvas.height = Math.floor(viewport.height) * PRINT_OUTPUT_SCALE;
+
+      // The rendered size of the canvas, relative to the size of canvasWrapper.
+      canvas.style.width = (PRINT_OUTPUT_SCALE * 100) + '%';
+      canvas.style.height = (PRINT_OUTPUT_SCALE * 100) + '%';
+
+      var cssScale = 'scale(' + (1 / PRINT_OUTPUT_SCALE) + ', ' +
+                                (1 / PRINT_OUTPUT_SCALE) + ')';
+      CustomStyle.setProp('transform' , canvas, cssScale);
+      CustomStyle.setProp('transformOrigin' , canvas, '0% 0%');
+
+      var printContainer = document.getElementById('printContainer');
+      var canvasWrapper = document.createElement('div');
+      canvasWrapper.style.width = viewport.width + 'pt';
+      canvasWrapper.style.height = viewport.height + 'pt';
+      canvasWrapper.appendChild(canvas);
+      printContainer.appendChild(canvasWrapper);
+
+      canvas.mozPrintCallback = function(obj) {
+        var ctx = obj.context;
+
+        ctx.save();
+        ctx.fillStyle = 'rgb(255, 255, 255)';
+        ctx.fillRect(0, 0, canvas.width, canvas.height);
+        ctx.restore();
+        // Used by the mozCurrentTransform polyfill in src/display/canvas.js.
+        ctx._transformMatrix =
+          [PRINT_OUTPUT_SCALE, 0, 0, PRINT_OUTPUT_SCALE, 0, 0];
+        ctx.scale(PRINT_OUTPUT_SCALE, PRINT_OUTPUT_SCALE);
+
+        var renderContext = {
+          canvasContext: ctx,
+          viewport: viewport,
+          intent: 'print'
+        };
+
+        pdfPage.render(renderContext).promise.then(function() {
+          // Tell the printEngine that rendering this canvas/page has finished.
+          obj.done();
+        }, function(error) {
+          console.error(error);
+          // Tell the printEngine that rendering this canvas/page has failed.
+          // This will make the print proces stop.
+          if ('abort' in obj) {
+            obj.abort();
+          } else {
+            obj.done();
+          }
+        });
+      };
+    },
+  };
+
+  return PDFPageView;
+})();
+
+
+/**
+ * @typedef {Object} TextLayerBuilderOptions
+ * @property {HTMLDivElement} textLayerDiv - The text layer container.
+ * @property {number} pageIndex - The page index.
+ * @property {PageViewport} viewport - The viewport of the text layer.
+ * @property {PDFFindController} findController
+ */
+
+/**
+ * TextLayerBuilder provides text-selection functionality for the PDF.
+ * It does this by creating overlay divs over the PDF text. These divs
+ * contain text that matches the PDF text they are overlaying. This object
+ * also provides a way to highlight text that is being searched for.
+ * @class
+ */
+var TextLayerBuilder = (function TextLayerBuilderClosure() {
+  function TextLayerBuilder(options) {
+    this.textLayerDiv = options.textLayerDiv;
+    this.renderingDone = false;
+    this.divContentDone = false;
+    this.pageIdx = options.pageIndex;
+    this.pageNumber = this.pageIdx + 1;
+    this.matches = [];
+    this.viewport = options.viewport;
+    this.textDivs = [];
+    this.findController = options.findController || null;
+    this.textLayerRenderTask = null;
+    this._bindMouse();
+  }
+
+  TextLayerBuilder.prototype = {
+    _finishRendering: function TextLayerBuilder_finishRendering() {
+      this.renderingDone = true;
+
+      var endOfContent = document.createElement('div');
+      endOfContent.className = 'endOfContent';
+      this.textLayerDiv.appendChild(endOfContent);
+
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('textlayerrendered', true, true, {
+        pageNumber: this.pageNumber
+      });
+      this.textLayerDiv.dispatchEvent(event);
+    },
+
+    /**
+     * Renders the text layer.
+     * @param {number} timeout (optional) if specified, the rendering waits
+     *   for specified amount of ms.
+     */
+    render: function TextLayerBuilder_render(timeout) {
+      if (!this.divContentDone || this.renderingDone) {
+        return;
+      }
+
+      if (this.textLayerRenderTask) {
+        this.textLayerRenderTask.cancel();
+        this.textLayerRenderTask = null;
+      }
+
+      this.textDivs = [];
+      var textLayerFrag = document.createDocumentFragment();
+      this.textLayerRenderTask = PDFJS.renderTextLayer({
+        textContent: this.textContent,
+        container: textLayerFrag,
+        viewport: this.viewport,
+        textDivs: this.textDivs,
+        timeout: timeout
+      });
+      this.textLayerRenderTask.promise.then(function () {
+        this.textLayerDiv.appendChild(textLayerFrag);
+        this._finishRendering();
+        this.updateMatches();
+      }.bind(this), function (reason) {
+        // canceled or failed to render text layer -- skipping errors
+      });
+    },
+
+    setTextContent: function TextLayerBuilder_setTextContent(textContent) {
+      if (this.textLayerRenderTask) {
+        this.textLayerRenderTask.cancel();
+        this.textLayerRenderTask = null;
+      }
+      this.textContent = textContent;
+      this.divContentDone = true;
+    },
+
+    convertMatches: function TextLayerBuilder_convertMatches(matches) {
+      var i = 0;
+      var iIndex = 0;
+      var bidiTexts = this.textContent.items;
+      var end = bidiTexts.length - 1;
+      var queryLen = (this.findController === null ?
+                      0 : this.findController.state.query.length);
+      var ret = [];
+
+      for (var m = 0, len = matches.length; m < len; m++) {
+        // Calculate the start position.
+        var matchIdx = matches[m];
+
+        // Loop over the divIdxs.
+        while (i !== end && matchIdx >= (iIndex + bidiTexts[i].str.length)) {
+          iIndex += bidiTexts[i].str.length;
+          i++;
+        }
+
+        if (i === bidiTexts.length) {
+          console.error('Could not find a matching mapping');
+        }
+
+        var match = {
+          begin: {
+            divIdx: i,
+            offset: matchIdx - iIndex
+          }
+        };
+
+        // Calculate the end position.
+        matchIdx += queryLen;
+
+        // Somewhat the same array as above, but use > instead of >= to get
+        // the end position right.
+        while (i !== end && matchIdx > (iIndex + bidiTexts[i].str.length)) {
+          iIndex += bidiTexts[i].str.length;
+          i++;
+        }
+
+        match.end = {
+          divIdx: i,
+          offset: matchIdx - iIndex
+        };
+        ret.push(match);
+      }
+
+      return ret;
+    },
+
+    renderMatches: function TextLayerBuilder_renderMatches(matches) {
+      // Early exit if there is nothing to render.
+      if (matches.length === 0) {
+        return;
+      }
+
+      var bidiTexts = this.textContent.items;
+      var textDivs = this.textDivs;
+      var prevEnd = null;
+      var pageIdx = this.pageIdx;
+      var isSelectedPage = (this.findController === null ?
+        false : (pageIdx === this.findController.selected.pageIdx));
+      var selectedMatchIdx = (this.findController === null ?
+                              -1 : this.findController.selected.matchIdx);
+      var highlightAll = (this.findController === null ?
+                          false : this.findController.state.highlightAll);
+      var infinity = {
+        divIdx: -1,
+        offset: undefined
+      };
+
+      function beginText(begin, className) {
+        var divIdx = begin.divIdx;
+        textDivs[divIdx].textContent = '';
+        appendTextToDiv(divIdx, 0, begin.offset, className);
+      }
+
+      function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
+        var div = textDivs[divIdx];
+        var content = bidiTexts[divIdx].str.substring(fromOffset, toOffset);
+        var node = document.createTextNode(content);
+        if (className) {
+          var span = document.createElement('span');
+          span.className = className;
+          span.appendChild(node);
+          div.appendChild(span);
+          return;
+        }
+        div.appendChild(node);
+      }
+
+      var i0 = selectedMatchIdx, i1 = i0 + 1;
+      if (highlightAll) {
+        i0 = 0;
+        i1 = matches.length;
+      } else if (!isSelectedPage) {
+        // Not highlighting all and this isn't the selected page, so do nothing.
+        return;
+      }
+
+      for (var i = i0; i < i1; i++) {
+        var match = matches[i];
+        var begin = match.begin;
+        var end = match.end;
+        var isSelected = (isSelectedPage && i === selectedMatchIdx);
+        var highlightSuffix = (isSelected ? ' selected' : '');
+
+        if (this.findController) {
+          this.findController.updateMatchPosition(pageIdx, i, textDivs,
+                                                  begin.divIdx, end.divIdx);
+        }
+
+        // Match inside new div.
+        if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
+          // If there was a previous div, then add the text at the end.
+          if (prevEnd !== null) {
+            appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
+          }
+          // Clear the divs and set the content until the starting point.
+          beginText(begin);
+        } else {
+          appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset);
+        }
+
+        if (begin.divIdx === end.divIdx) {
+          appendTextToDiv(begin.divIdx, begin.offset, end.offset,
+                          'highlight' + highlightSuffix);
+        } else {
+          appendTextToDiv(begin.divIdx, begin.offset, infinity.offset,
+                          'highlight begin' + highlightSuffix);
+          for (var n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) {
+            textDivs[n0].className = 'highlight middle' + highlightSuffix;
+          }
+          beginText(end, 'highlight end' + highlightSuffix);
+        }
+        prevEnd = end;
+      }
+
+      if (prevEnd) {
+        appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
+      }
+    },
+
+    updateMatches: function TextLayerBuilder_updateMatches() {
+      // Only show matches when all rendering is done.
+      if (!this.renderingDone) {
+        return;
+      }
+
+      // Clear all matches.
+      var matches = this.matches;
+      var textDivs = this.textDivs;
+      var bidiTexts = this.textContent.items;
+      var clearedUntilDivIdx = -1;
+
+      // Clear all current matches.
+      for (var i = 0, len = matches.length; i < len; i++) {
+        var match = matches[i];
+        var begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
+        for (var n = begin, end = match.end.divIdx; n <= end; n++) {
+          var div = textDivs[n];
+          div.textContent = bidiTexts[n].str;
+          div.className = '';
+        }
+        clearedUntilDivIdx = match.end.divIdx + 1;
+      }
+
+      if (this.findController === null || !this.findController.active) {
+        return;
+      }
+
+      // Convert the matches on the page controller into the match format
+      // used for the textLayer.
+      this.matches = this.convertMatches(this.findController === null ?
+        [] : (this.findController.pageMatches[this.pageIdx] || []));
+      this.renderMatches(this.matches);
+    },
+
+    /**
+     * Fixes text selection: adds additional div where mouse was clicked.
+     * This reduces flickering of the content if mouse slowly dragged down/up.
+     * @private
+     */
+    _bindMouse: function TextLayerBuilder_bindMouse() {
+      var div = this.textLayerDiv;
+      div.addEventListener('mousedown', function (e) {
+        var end = div.querySelector('.endOfContent');
+        if (!end) {
+          return;
+        }
+        // On non-Firefox browsers, the selection will feel better if the height
+        // of the endOfContent div will be adjusted to start at mouse click
+        // location -- this will avoid flickering when selections moves up.
+        // However it does not work when selection started on empty space.
+        var adjustTop = e.target !== div;
+        adjustTop = adjustTop && window.getComputedStyle(end).
+          getPropertyValue('-moz-user-select') !== 'none';
+        if (adjustTop) {
+          var divBounds = div.getBoundingClientRect();
+          var r = Math.max(0, (e.pageY - divBounds.top) / divBounds.height);
+          end.style.top = (r * 100).toFixed(2) + '%';
+        }
+        end.classList.add('active');
+      });
+      div.addEventListener('mouseup', function (e) {
+        var end = div.querySelector('.endOfContent');
+        if (!end) {
+          return;
+        }
+        end.style.top = '';
+        end.classList.remove('active');
+      });
+    },
+  };
+  return TextLayerBuilder;
+})();
+
+/**
+ * @constructor
+ * @implements IPDFTextLayerFactory
+ */
+function DefaultTextLayerFactory() {}
+DefaultTextLayerFactory.prototype = {
+  /**
+   * @param {HTMLDivElement} textLayerDiv
+   * @param {number} pageIndex
+   * @param {PageViewport} viewport
+   * @returns {TextLayerBuilder}
+   */
+  createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport) {
+    return new TextLayerBuilder({
+      textLayerDiv: textLayerDiv,
+      pageIndex: pageIndex,
+      viewport: viewport
+    });
+  }
+};
+
+
+/**
+ * @typedef {Object} AnnotationLayerBuilderOptions
+ * @property {HTMLDivElement} pageDiv
+ * @property {PDFPage} pdfPage
+ * @property {IPDFLinkService} linkService
+ */
+
+/**
+ * @class
+ */
+var AnnotationLayerBuilder = (function AnnotationLayerBuilderClosure() {
+  /**
+   * @param {AnnotationLayerBuilderOptions} options
+   * @constructs AnnotationLayerBuilder
+   */
+  function AnnotationLayerBuilder(options) {
+    this.pageDiv = options.pageDiv;
+    this.pdfPage = options.pdfPage;
+    this.linkService = options.linkService;
+
+    this.div = null;
+  }
+
+  AnnotationLayerBuilder.prototype =
+      /** @lends AnnotationLayerBuilder.prototype */ {
+
+    /**
+     * @param {PageViewport} viewport
+     * @param {string} intent (default value is 'display')
+     */
+    render: function AnnotationLayerBuilder_render(viewport, intent) {
+      var self = this;
+      var parameters = {
+        intent: (intent === undefined ? 'display' : intent),
+      };
+
+      this.pdfPage.getAnnotations(parameters).then(function (annotations) {
+        viewport = viewport.clone({ dontFlip: true });
+        parameters = {
+          viewport: viewport,
+          div: self.div,
+          annotations: annotations,
+          page: self.pdfPage,
+          linkService: self.linkService
+        };
+
+        if (self.div) {
+          // If an annotationLayer already exists, refresh its children's
+          // transformation matrices.
+          PDFJS.AnnotationLayer.update(parameters);
+        } else {
+          // Create an annotation layer div and render the annotations
+          // if there is at least one annotation.
+          if (annotations.length === 0) {
+            return;
+          }
+
+          self.div = document.createElement('div');
+          self.div.className = 'annotationLayer';
+          self.pageDiv.appendChild(self.div);
+          parameters.div = self.div;
+
+          PDFJS.AnnotationLayer.render(parameters);
+        }
+      });
+    },
+
+    hide: function AnnotationLayerBuilder_hide() {
+      if (!this.div) {
+        return;
+      }
+      this.div.setAttribute('hidden', 'true');
+    }
+  };
+
+  return AnnotationLayerBuilder;
+})();
+
+/**
+ * @constructor
+ * @implements IPDFAnnotationLayerFactory
+ */
+function DefaultAnnotationLayerFactory() {}
+DefaultAnnotationLayerFactory.prototype = {
+  /**
+   * @param {HTMLDivElement} pageDiv
+   * @param {PDFPage} pdfPage
+   * @returns {AnnotationLayerBuilder}
+   */
+  createAnnotationLayerBuilder: function (pageDiv, pdfPage) {
+    return new AnnotationLayerBuilder({
+      pageDiv: pageDiv,
+      pdfPage: pdfPage,
+      linkService: new SimpleLinkService(),
+    });
+  }
+};
+
+
+/**
+ * @typedef {Object} PDFViewerOptions
+ * @property {HTMLDivElement} container - The container for the viewer element.
+ * @property {HTMLDivElement} viewer - (optional) The viewer element.
+ * @property {IPDFLinkService} linkService - The navigation/linking service.
+ * @property {PDFRenderingQueue} renderingQueue - (optional) The rendering
+ *   queue object.
+ * @property {boolean} removePageBorders - (optional) Removes the border shadow
+ *   around the pages. The default is false.
+ */
+
+/**
+ * Simple viewer control to display PDF content/pages.
+ * @class
+ * @implements {IRenderableView}
+ */
+var PDFViewer = (function pdfViewer() {
+  function PDFPageViewBuffer(size) {
+    var data = [];
+    this.push = function cachePush(view) {
+      var i = data.indexOf(view);
+      if (i >= 0) {
+        data.splice(i, 1);
+      }
+      data.push(view);
+      if (data.length > size) {
+        data.shift().destroy();
+      }
+    };
+    this.resize = function (newSize) {
+      size = newSize;
+      while (data.length > size) {
+        data.shift().destroy();
+      }
+    };
+  }
+
+  function isSameScale(oldScale, newScale) {
+    if (newScale === oldScale) {
+      return true;
+    }
+    if (Math.abs(newScale - oldScale) < 1e-15) {
+      // Prevent unnecessary re-rendering of all pages when the scale
+      // changes only because of limited numerical precision.
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * @constructs PDFViewer
+   * @param {PDFViewerOptions} options
+   */
+  function PDFViewer(options) {
+    this.container = options.container;
+    this.viewer = options.viewer || options.container.firstElementChild;
+    this.linkService = options.linkService || new SimpleLinkService();
+    this.removePageBorders = options.removePageBorders || false;
+
+    this.defaultRenderingQueue = !options.renderingQueue;
+    if (this.defaultRenderingQueue) {
+      // Custom rendering queue is not specified, using default one
+      this.renderingQueue = new PDFRenderingQueue();
+      this.renderingQueue.setViewer(this);
+    } else {
+      this.renderingQueue = options.renderingQueue;
+    }
+
+    this.scroll = watchScroll(this.container, this._scrollUpdate.bind(this));
+    this.updateInProgress = false;
+    this.presentationModeState = PresentationModeState.UNKNOWN;
+    this._resetView();
+
+    if (this.removePageBorders) {
+      this.viewer.classList.add('removePageBorders');
+    }
+  }
+
+  PDFViewer.prototype = /** @lends PDFViewer.prototype */{
+    get pagesCount() {
+      return this._pages.length;
+    },
+
+    getPageView: function (index) {
+      return this._pages[index];
+    },
+
+    get currentPageNumber() {
+      return this._currentPageNumber;
+    },
+
+    set currentPageNumber(val) {
+      if (!this.pdfDocument) {
+        this._currentPageNumber = val;
+        return;
+      }
+
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('pagechange', true, true, window, 0);
+      event.updateInProgress = this.updateInProgress;
+
+      if (!(0 < val && val <= this.pagesCount)) {
+        event.pageNumber = this._currentPageNumber;
+        event.previousPageNumber = val;
+        this.container.dispatchEvent(event);
+        return;
+      }
+
+      event.previousPageNumber = this._currentPageNumber;
+      this._currentPageNumber = val;
+      event.pageNumber = val;
+      this.container.dispatchEvent(event);
+
+      // Check if the caller is `PDFViewer_update`, to avoid breaking scrolling.
+      if (this.updateInProgress) {
+        return;
+      }
+      this.scrollPageIntoView(val);
+    },
+
+    /**
+     * @returns {number}
+     */
+    get currentScale() {
+      return this._currentScale !== UNKNOWN_SCALE ? this._currentScale :
+                                                    DEFAULT_SCALE;
+    },
+
+    /**
+     * @param {number} val - Scale of the pages in percents.
+     */
+    set currentScale(val) {
+      if (isNaN(val))  {
+        throw new Error('Invalid numeric scale');
+      }
+      if (!this.pdfDocument) {
+        this._currentScale = val;
+        this._currentScaleValue = val !== UNKNOWN_SCALE ? val.toString() : null;
+        return;
+      }
+      this._setScale(val, false);
+    },
+
+    /**
+     * @returns {string}
+     */
+    get currentScaleValue() {
+      return this._currentScaleValue;
+    },
+
+    /**
+     * @param val - The scale of the pages (in percent or predefined value).
+     */
+    set currentScaleValue(val) {
+      if (!this.pdfDocument) {
+        this._currentScale = isNaN(val) ? UNKNOWN_SCALE : val;
+        this._currentScaleValue = val;
+        return;
+      }
+      this._setScale(val, false);
+    },
+
+    /**
+     * @returns {number}
+     */
+    get pagesRotation() {
+      return this._pagesRotation;
+    },
+
+    /**
+     * @param {number} rotation - The rotation of the pages (0, 90, 180, 270).
+     */
+    set pagesRotation(rotation) {
+      this._pagesRotation = rotation;
+
+      for (var i = 0, l = this._pages.length; i < l; i++) {
+        var pageView = this._pages[i];
+        pageView.update(pageView.scale, rotation);
+      }
+
+      this._setScale(this._currentScaleValue, true);
+
+      if (this.defaultRenderingQueue) {
+        this.update();
+      }
+    },
+
+    /**
+     * @param pdfDocument {PDFDocument}
+     */
+    setDocument: function (pdfDocument) {
+      if (this.pdfDocument) {
+        this._resetView();
+      }
+
+      this.pdfDocument = pdfDocument;
+      if (!pdfDocument) {
+        return;
+      }
+
+      var pagesCount = pdfDocument.numPages;
+      var self = this;
+
+      var resolvePagesPromise;
+      var pagesPromise = new Promise(function (resolve) {
+        resolvePagesPromise = resolve;
+      });
+      this.pagesPromise = pagesPromise;
+      pagesPromise.then(function () {
+        var event = document.createEvent('CustomEvent');
+        event.initCustomEvent('pagesloaded', true, true, {
+          pagesCount: pagesCount
+        });
+        self.container.dispatchEvent(event);
+      });
+
+      var isOnePageRenderedResolved = false;
+      var resolveOnePageRendered = null;
+      var onePageRendered = new Promise(function (resolve) {
+        resolveOnePageRendered = resolve;
+      });
+      this.onePageRendered = onePageRendered;
+
+      var bindOnAfterAndBeforeDraw = function (pageView) {
+        pageView.onBeforeDraw = function pdfViewLoadOnBeforeDraw() {
+          // Add the page to the buffer at the start of drawing. That way it can
+          // be evicted from the buffer and destroyed even if we pause its
+          // rendering.
+          self._buffer.push(this);
+        };
+        // when page is painted, using the image as thumbnail base
+        pageView.onAfterDraw = function pdfViewLoadOnAfterDraw() {
+          if (!isOnePageRenderedResolved) {
+            isOnePageRenderedResolved = true;
+            resolveOnePageRendered();
+          }
+        };
+      };
+
+      var firstPagePromise = pdfDocument.getPage(1);
+      this.firstPagePromise = firstPagePromise;
+
+      // Fetch a single page so we can get a viewport that will be the default
+      // viewport for all pages
+      return firstPagePromise.then(function(pdfPage) {
+        var scale = this.currentScale;
+        var viewport = pdfPage.getViewport(scale * CSS_UNITS);
+        for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
+          var textLayerFactory = null;
+          if (!PDFJS.disableTextLayer) {
+            textLayerFactory = this;
+          }
+          var pageView = new PDFPageView({
+            container: this.viewer,
+            id: pageNum,
+            scale: scale,
+            defaultViewport: viewport.clone(),
+            renderingQueue: this.renderingQueue,
+            textLayerFactory: textLayerFactory,
+            annotationLayerFactory: this
+          });
+          bindOnAfterAndBeforeDraw(pageView);
+          this._pages.push(pageView);
+        }
+
+        var linkService = this.linkService;
+
+        // Fetch all the pages since the viewport is needed before printing
+        // starts to create the correct size canvas. Wait until one page is
+        // rendered so we don't tie up too many resources early on.
+        onePageRendered.then(function () {
+          if (!PDFJS.disableAutoFetch) {
+            var getPagesLeft = pagesCount;
+            for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
+              pdfDocument.getPage(pageNum).then(function (pageNum, pdfPage) {
+                var pageView = self._pages[pageNum - 1];
+                if (!pageView.pdfPage) {
+                  pageView.setPdfPage(pdfPage);
+                }
+                linkService.cachePageRef(pageNum, pdfPage.ref);
+                getPagesLeft--;
+                if (!getPagesLeft) {
+                  resolvePagesPromise();
+                }
+              }.bind(null, pageNum));
+            }
+          } else {
+            // XXX: Printing is semi-broken with auto fetch disabled.
+            resolvePagesPromise();
+          }
+        });
+
+        var event = document.createEvent('CustomEvent');
+        event.initCustomEvent('pagesinit', true, true, null);
+        self.container.dispatchEvent(event);
+
+        if (this.defaultRenderingQueue) {
+          this.update();
+        }
+
+        if (this.findController) {
+          this.findController.resolveFirstPage();
+        }
+      }.bind(this));
+    },
+
+    _resetView: function () {
+      this._pages = [];
+      this._currentPageNumber = 1;
+      this._currentScale = UNKNOWN_SCALE;
+      this._currentScaleValue = null;
+      this._buffer = new PDFPageViewBuffer(DEFAULT_CACHE_SIZE);
+      this._location = null;
+      this._pagesRotation = 0;
+      this._pagesRequests = [];
+
+      var container = this.viewer;
+      while (container.hasChildNodes()) {
+        container.removeChild(container.lastChild);
+      }
+    },
+
+    _scrollUpdate: function PDFViewer_scrollUpdate() {
+      if (this.pagesCount === 0) {
+        return;
+      }
+      this.update();
+      for (var i = 0, ii = this._pages.length; i < ii; i++) {
+        this._pages[i].updatePosition();
+      }
+    },
+
+    _setScaleDispatchEvent: function pdfViewer_setScaleDispatchEvent(
+        newScale, newValue, preset) {
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('scalechange', true, true, window, 0);
+      event.scale = newScale;
+      if (preset) {
+        event.presetValue = newValue;
+      }
+      this.container.dispatchEvent(event);
+    },
+
+    _setScaleUpdatePages: function pdfViewer_setScaleUpdatePages(
+        newScale, newValue, noScroll, preset) {
+      this._currentScaleValue = newValue;
+
+      if (isSameScale(this._currentScale, newScale)) {
+        if (preset) {
+          this._setScaleDispatchEvent(newScale, newValue, true);
+        }
+        return;
+      }
+
+      for (var i = 0, ii = this._pages.length; i < ii; i++) {
+        this._pages[i].update(newScale);
+      }
+      this._currentScale = newScale;
+
+      if (!noScroll) {
+        var page = this._currentPageNumber, dest;
+        if (this._location && !IGNORE_CURRENT_POSITION_ON_ZOOM &&
+            !(this.isInPresentationMode || this.isChangingPresentationMode)) {
+          page = this._location.pageNumber;
+          dest = [null, { name: 'XYZ' }, this._location.left,
+                  this._location.top, null];
+        }
+        this.scrollPageIntoView(page, dest);
+      }
+
+      this._setScaleDispatchEvent(newScale, newValue, preset);
+
+      if (this.defaultRenderingQueue) {
+        this.update();
+      }
+    },
+
+    _setScale: function pdfViewer_setScale(value, noScroll) {
+      var scale = parseFloat(value);
+
+      if (scale > 0) {
+        this._setScaleUpdatePages(scale, value, noScroll, false);
+      } else {
+        var currentPage = this._pages[this._currentPageNumber - 1];
+        if (!currentPage) {
+          return;
+        }
+        var hPadding = (this.isInPresentationMode || this.removePageBorders) ?
+          0 : SCROLLBAR_PADDING;
+        var vPadding = (this.isInPresentationMode || this.removePageBorders) ?
+          0 : VERTICAL_PADDING;
+        var pageWidthScale = (this.container.clientWidth - hPadding) /
+                             currentPage.width * currentPage.scale;
+        var pageHeightScale = (this.container.clientHeight - vPadding) /
+                              currentPage.height * currentPage.scale;
+        switch (value) {
+          case 'page-actual':
+            scale = 1;
+            break;
+          case 'page-width':
+            scale = pageWidthScale;
+            break;
+          case 'page-height':
+            scale = pageHeightScale;
+            break;
+          case 'page-fit':
+            scale = Math.min(pageWidthScale, pageHeightScale);
+            break;
+          case 'auto':
+            var isLandscape = (currentPage.width > currentPage.height);
+            // For pages in landscape mode, fit the page height to the viewer
+            // *unless* the page would thus become too wide to fit horizontally.
+            var horizontalScale = isLandscape ?
+              Math.min(pageHeightScale, pageWidthScale) : pageWidthScale;
+            scale = Math.min(MAX_AUTO_SCALE, horizontalScale);
+            break;
+          default:
+            console.error('pdfViewSetScale: \'' + value +
+              '\' is an unknown zoom value.');
+            return;
+        }
+        this._setScaleUpdatePages(scale, value, noScroll, true);
+      }
+    },
+
+    /**
+     * Scrolls page into view.
+     * @param {number} pageNumber
+     * @param {Array} dest - (optional) original PDF destination array:
+     *   <page-ref> </XYZ|FitXXX> <args..>
+     */
+    scrollPageIntoView: function PDFViewer_scrollPageIntoView(pageNumber,
+                                                              dest) {
+      if (!this.pdfDocument) {
+        return;
+      }
+
+      var pageView = this._pages[pageNumber - 1];
+
+      if (this.isInPresentationMode) {
+        if (this._currentPageNumber !== pageView.id) {
+          // Avoid breaking getVisiblePages in presentation mode.
+          this.currentPageNumber = pageView.id;
+          return;
+        }
+        dest = null;
+        // Fixes the case when PDF has different page sizes.
+        this._setScale(this._currentScaleValue, true);
+      }
+      if (!dest) {
+        scrollIntoView(pageView.div);
+        return;
+      }
+
+      var x = 0, y = 0;
+      var width = 0, height = 0, widthScale, heightScale;
+      var changeOrientation = (pageView.rotation % 180 === 0 ? false : true);
+      var pageWidth = (changeOrientation ? pageView.height : pageView.width) /
+        pageView.scale / CSS_UNITS;
+      var pageHeight = (changeOrientation ? pageView.width : pageView.height) /
+        pageView.scale / CSS_UNITS;
+      var scale = 0;
+      switch (dest[1].name) {
+        case 'XYZ':
+          x = dest[2];
+          y = dest[3];
+          scale = dest[4];
+          // If x and/or y coordinates are not supplied, default to
+          // _top_ left of the page (not the obvious bottom left,
+          // since aligning the bottom of the intended page with the
+          // top of the window is rarely helpful).
+          x = x !== null ? x : 0;
+          y = y !== null ? y : pageHeight;
+          break;
+        case 'Fit':
+        case 'FitB':
+          scale = 'page-fit';
+          break;
+        case 'FitH':
+        case 'FitBH':
+          y = dest[2];
+          scale = 'page-width';
+          // According to the PDF spec, section 12.3.2.2, a `null` value in the
+          // parameter should maintain the position relative to the new page.
+          if (y === null && this._location) {
+            x = this._location.left;
+            y = this._location.top;
+          }
+          break;
+        case 'FitV':
+        case 'FitBV':
+          x = dest[2];
+          width = pageWidth;
+          height = pageHeight;
+          scale = 'page-height';
+          break;
+        case 'FitR':
+          x = dest[2];
+          y = dest[3];
+          width = dest[4] - x;
+          height = dest[5] - y;
+          var hPadding = this.removePageBorders ? 0 : SCROLLBAR_PADDING;
+          var vPadding = this.removePageBorders ? 0 : VERTICAL_PADDING;
+
+          widthScale = (this.container.clientWidth - hPadding) /
+            width / CSS_UNITS;
+          heightScale = (this.container.clientHeight - vPadding) /
+            height / CSS_UNITS;
+          scale = Math.min(Math.abs(widthScale), Math.abs(heightScale));
+          break;
+        default:
+          return;
+      }
+
+      if (scale && scale !== this._currentScale) {
+        this.currentScaleValue = scale;
+      } else if (this._currentScale === UNKNOWN_SCALE) {
+        this.currentScaleValue = DEFAULT_SCALE_VALUE;
+      }
+
+      if (scale === 'page-fit' && !dest[4]) {
+        scrollIntoView(pageView.div);
+        return;
+      }
+
+      var boundingRect = [
+        pageView.viewport.convertToViewportPoint(x, y),
+        pageView.viewport.convertToViewportPoint(x + width, y + height)
+      ];
+      var left = Math.min(boundingRect[0][0], boundingRect[1][0]);
+      var top = Math.min(boundingRect[0][1], boundingRect[1][1]);
+
+      scrollIntoView(pageView.div, { left: left, top: top });
+    },
+
+    _updateLocation: function (firstPage) {
+      var currentScale = this._currentScale;
+      var currentScaleValue = this._currentScaleValue;
+      var normalizedScaleValue =
+        parseFloat(currentScaleValue) === currentScale ?
+        Math.round(currentScale * 10000) / 100 : currentScaleValue;
+
+      var pageNumber = firstPage.id;
+      var pdfOpenParams = '#page=' + pageNumber;
+      pdfOpenParams += '&zoom=' + normalizedScaleValue;
+      var currentPageView = this._pages[pageNumber - 1];
+      var container = this.container;
+      var topLeft = currentPageView.getPagePoint(
+        (container.scrollLeft - firstPage.x),
+        (container.scrollTop - firstPage.y));
+      var intLeft = Math.round(topLeft[0]);
+      var intTop = Math.round(topLeft[1]);
+      pdfOpenParams += ',' + intLeft + ',' + intTop;
+
+      this._location = {
+        pageNumber: pageNumber,
+        scale: normalizedScaleValue,
+        top: intTop,
+        left: intLeft,
+        pdfOpenParams: pdfOpenParams
+      };
+    },
+
+    update: function PDFViewer_update() {
+      var visible = this._getVisiblePages();
+      var visiblePages = visible.views;
+      if (visiblePages.length === 0) {
+        return;
+      }
+
+      this.updateInProgress = true;
+
+      var suggestedCacheSize = Math.max(DEFAULT_CACHE_SIZE,
+          2 * visiblePages.length + 1);
+      this._buffer.resize(suggestedCacheSize);
+
+      this.renderingQueue.renderHighestPriority(visible);
+
+      var currentId = this._currentPageNumber;
+      var firstPage = visible.first;
+
+      for (var i = 0, ii = visiblePages.length, stillFullyVisible = false;
+           i < ii; ++i) {
+        var page = visiblePages[i];
+
+        if (page.percent < 100) {
+          break;
+        }
+        if (page.id === currentId) {
+          stillFullyVisible = true;
+          break;
+        }
+      }
+
+      if (!stillFullyVisible) {
+        currentId = visiblePages[0].id;
+      }
+
+      if (!this.isInPresentationMode) {
+        this.currentPageNumber = currentId;
+      }
+
+      this._updateLocation(firstPage);
+
+      this.updateInProgress = false;
+
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('updateviewarea', true, true, window, 0);
+      event.location = this._location;
+      this.container.dispatchEvent(event);
+    },
+
+    containsElement: function (element) {
+      return this.container.contains(element);
+    },
+
+    focus: function () {
+      this.container.focus();
+    },
+
+    get isInPresentationMode() {
+      return this.presentationModeState === PresentationModeState.FULLSCREEN;
+    },
+
+    get isChangingPresentationMode() {
+      return this.presentationModeState === PresentationModeState.CHANGING;
+    },
+
+    get isHorizontalScrollbarEnabled() {
+      return (this.isInPresentationMode ?
+        false : (this.container.scrollWidth > this.container.clientWidth));
+    },
+
+    _getVisiblePages: function () {
+      if (!this.isInPresentationMode) {
+        return getVisibleElements(this.container, this._pages, true);
+      } else {
+        // The algorithm in getVisibleElements doesn't work in all browsers and
+        // configurations when presentation mode is active.
+        var visible = [];
+        var currentPage = this._pages[this._currentPageNumber - 1];
+        visible.push({ id: currentPage.id, view: currentPage });
+        return { first: currentPage, last: currentPage, views: visible };
+      }
+    },
+
+    cleanup: function () {
+      for (var i = 0, ii = this._pages.length; i < ii; i++) {
+        if (this._pages[i] &&
+            this._pages[i].renderingState !== RenderingStates.FINISHED) {
+          this._pages[i].reset();
+        }
+      }
+    },
+
+    /**
+     * @param {PDFPageView} pageView
+     * @returns {PDFPage}
+     * @private
+     */
+    _ensurePdfPageLoaded: function (pageView) {
+      if (pageView.pdfPage) {
+        return Promise.resolve(pageView.pdfPage);
+      }
+      var pageNumber = pageView.id;
+      if (this._pagesRequests[pageNumber]) {
+        return this._pagesRequests[pageNumber];
+      }
+      var promise = this.pdfDocument.getPage(pageNumber).then(
+          function (pdfPage) {
+        pageView.setPdfPage(pdfPage);
+        this._pagesRequests[pageNumber] = null;
+        return pdfPage;
+      }.bind(this));
+      this._pagesRequests[pageNumber] = promise;
+      return promise;
+    },
+
+    forceRendering: function (currentlyVisiblePages) {
+      var visiblePages = currentlyVisiblePages || this._getVisiblePages();
+      var pageView = this.renderingQueue.getHighestPriority(visiblePages,
+                                                            this._pages,
+                                                            this.scroll.down);
+      if (pageView) {
+        this._ensurePdfPageLoaded(pageView).then(function () {
+          this.renderingQueue.renderView(pageView);
+        }.bind(this));
+        return true;
+      }
+      return false;
+    },
+
+    getPageTextContent: function (pageIndex) {
+      return this.pdfDocument.getPage(pageIndex + 1).then(function (page) {
+        return page.getTextContent({ normalizeWhitespace: true });
+      });
+    },
+
+    /**
+     * @param {HTMLDivElement} textLayerDiv
+     * @param {number} pageIndex
+     * @param {PageViewport} viewport
+     * @returns {TextLayerBuilder}
+     */
+    createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport) {
+      return new TextLayerBuilder({
+        textLayerDiv: textLayerDiv,
+        pageIndex: pageIndex,
+        viewport: viewport,
+        findController: this.isInPresentationMode ? null : this.findController
+      });
+    },
+
+    /**
+     * @param {HTMLDivElement} pageDiv
+     * @param {PDFPage} pdfPage
+     * @returns {AnnotationLayerBuilder}
+     */
+    createAnnotationLayerBuilder: function (pageDiv, pdfPage) {
+      return new AnnotationLayerBuilder({
+        pageDiv: pageDiv,
+        pdfPage: pdfPage,
+        linkService: this.linkService
+      });
+    },
+
+    setFindController: function (findController) {
+      this.findController = findController;
+    },
+  };
+
+  return PDFViewer;
+})();
+
+var SimpleLinkService = (function SimpleLinkServiceClosure() {
+  function SimpleLinkService() {}
+
+  SimpleLinkService.prototype = {
+    /**
+     * @returns {number}
+     */
+    get page() {
+      return 0;
+    },
+    /**
+     * @param {number} value
+     */
+    set page(value) {},
+    /**
+     * @param dest - The PDF destination object.
+     */
+    navigateTo: function (dest) {},
+    /**
+     * @param dest - The PDF destination object.
+     * @returns {string} The hyperlink to the PDF object.
+     */
+    getDestinationHash: function (dest) {
+      return '#';
+    },
+    /**
+     * @param hash - The PDF parameters/hash.
+     * @returns {string} The hyperlink to the PDF object.
+     */
+    getAnchorUrl: function (hash) {
+      return '#';
+    },
+    /**
+     * @param {string} hash
+     */
+    setHash: function (hash) {},
+    /**
+     * @param {string} action
+     */
+    executeNamedAction: function (action) {},
+    /**
+     * @param {number} pageNum - page number.
+     * @param {Object} pageRef - reference to the page.
+     */
+    cachePageRef: function (pageNum, pageRef) {}
+  };
+  return SimpleLinkService;
+})();
+
+
+var THUMBNAIL_SCROLL_MARGIN = -19;
+
+
+var THUMBNAIL_WIDTH = 98; // px
+var THUMBNAIL_CANVAS_BORDER_WIDTH = 1; // px
+
+/**
+ * @typedef {Object} PDFThumbnailViewOptions
+ * @property {HTMLDivElement} container - The viewer element.
+ * @property {number} id - The thumbnail's unique ID (normally its number).
+ * @property {PageViewport} defaultViewport - The page viewport.
+ * @property {IPDFLinkService} linkService - The navigation/linking service.
+ * @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
+ */
+
+/**
+ * @class
+ * @implements {IRenderableView}
+ */
+var PDFThumbnailView = (function PDFThumbnailViewClosure() {
+  function getTempCanvas(width, height) {
+    var tempCanvas = PDFThumbnailView.tempImageCache;
+    if (!tempCanvas) {
+      tempCanvas = document.createElement('canvas');
+      PDFThumbnailView.tempImageCache = tempCanvas;
+    }
+    tempCanvas.width = width;
+    tempCanvas.height = height;
+
+    // Since this is a temporary canvas, we need to fill the canvas with a white
+    // background ourselves. |_getPageDrawContext| uses CSS rules for this.
+    tempCanvas.mozOpaque = true;
+    var ctx = tempCanvas.getContext('2d', {alpha: false});
+    ctx.save();
+    ctx.fillStyle = 'rgb(255, 255, 255)';
+    ctx.fillRect(0, 0, width, height);
+    ctx.restore();
+    return tempCanvas;
+  }
+
+  /**
+   * @constructs PDFThumbnailView
+   * @param {PDFThumbnailViewOptions} options
+   */
+  function PDFThumbnailView(options) {
+    var container = options.container;
+    var id = options.id;
+    var defaultViewport = options.defaultViewport;
+    var linkService = options.linkService;
+    var renderingQueue = options.renderingQueue;
+
+    this.id = id;
+    this.renderingId = 'thumbnail' + id;
+
+    this.pdfPage = null;
+    this.rotation = 0;
+    this.viewport = defaultViewport;
+    this.pdfPageRotate = defaultViewport.rotation;
+
+    this.linkService = linkService;
+    this.renderingQueue = renderingQueue;
+
+    this.hasImage = false;
+    this.resume = null;
+    this.renderingState = RenderingStates.INITIAL;
+
+    this.pageWidth = this.viewport.width;
+    this.pageHeight = this.viewport.height;
+    this.pageRatio = this.pageWidth / this.pageHeight;
+
+    this.canvasWidth = THUMBNAIL_WIDTH;
+    this.canvasHeight = (this.canvasWidth / this.pageRatio) | 0;
+    this.scale = this.canvasWidth / this.pageWidth;
+
+    var anchor = document.createElement('a');
+    anchor.href = linkService.getAnchorUrl('#page=' + id);
+    anchor.title = 'Page ' + id;
+    anchor.onclick = function stopNavigation() {
+      linkService.page = id;
+      return false;
+    };
+
+    var div = document.createElement('div');
+    div.id = 'thumbnailContainer' + id;
+    div.className = 'thumbnail';
+    this.div = div;
+
+    if (id === 1) {
+      // Highlight the thumbnail of the first page when no page number is
+      // specified (or exists in cache) when the document is loaded.
+      div.classList.add('selected');
+    }
+
+    var ring = document.createElement('div');
+    ring.className = 'thumbnailSelectionRing';
+    var borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
+    ring.style.width = this.canvasWidth + borderAdjustment + 'px';
+    ring.style.height = this.canvasHeight + borderAdjustment + 'px';
+    this.ring = ring;
+
+    div.appendChild(ring);
+    anchor.appendChild(div);
+    container.appendChild(anchor);
+  }
+
+  PDFThumbnailView.prototype = {
+    setPdfPage: function PDFThumbnailView_setPdfPage(pdfPage) {
+      this.pdfPage = pdfPage;
+      this.pdfPageRotate = pdfPage.rotate;
+      var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
+      this.viewport = pdfPage.getViewport(1, totalRotation);
+      this.reset();
+    },
+
+    reset: function PDFThumbnailView_reset() {
+      if (this.renderTask) {
+        this.renderTask.cancel();
+      }
+      this.hasImage = false;
+      this.resume = null;
+      this.renderingState = RenderingStates.INITIAL;
+
+      this.pageWidth = this.viewport.width;
+      this.pageHeight = this.viewport.height;
+      this.pageRatio = this.pageWidth / this.pageHeight;
+
+      this.canvasHeight = (this.canvasWidth / this.pageRatio) | 0;
+      this.scale = (this.canvasWidth / this.pageWidth);
+
+      this.div.removeAttribute('data-loaded');
+      var ring = this.ring;
+      var childNodes = ring.childNodes;
+      for (var i = childNodes.length - 1; i >= 0; i--) {
+        ring.removeChild(childNodes[i]);
+      }
+      var borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
+      ring.style.width = this.canvasWidth + borderAdjustment + 'px';
+      ring.style.height = this.canvasHeight + borderAdjustment + 'px';
+
+      if (this.canvas) {
+        // Zeroing the width and height causes Firefox to release graphics
+        // resources immediately, which can greatly reduce memory consumption.
+        this.canvas.width = 0;
+        this.canvas.height = 0;
+        delete this.canvas;
+      }
+      if (this.image) {
+        this.image.removeAttribute('src');
+        delete this.image;
+      }
+    },
+
+    update: function PDFThumbnailView_update(rotation) {
+      if (typeof rotation !== 'undefined') {
+        this.rotation = rotation;
+      }
+      var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
+      this.viewport = this.viewport.clone({
+        scale: 1,
+        rotation: totalRotation
+      });
+      this.reset();
+    },
+
+    /**
+     * @private
+     */
+    _getPageDrawContext:
+        function PDFThumbnailView_getPageDrawContext(noCtxScale) {
+      var canvas = document.createElement('canvas');
+      this.canvas = canvas;
+
+      canvas.mozOpaque = true;
+      var ctx = canvas.getContext('2d', {alpha: false});
+      var outputScale = getOutputScale(ctx);
+
+      canvas.width = (this.canvasWidth * outputScale.sx) | 0;
+      canvas.height = (this.canvasHeight * outputScale.sy) | 0;
+      canvas.style.width = this.canvasWidth + 'px';
+      canvas.style.height = this.canvasHeight + 'px';
+
+      if (!noCtxScale && outputScale.scaled) {
+        ctx.scale(outputScale.sx, outputScale.sy);
+      }
+
+      var image = document.createElement('img');
+      this.image = image;
+
+      image.id = this.renderingId;
+      image.className = 'thumbnailImage';
+      image.setAttribute('aria-label', 'Thumbnail of Page ' + this.id);
+
+      image.style.width = canvas.style.width;
+      image.style.height = canvas.style.height;
+
+      return ctx;
+    },
+
+    /**
+     * @private
+     */
+    _convertCanvasToImage: function PDFThumbnailView_convertCanvasToImage() {
+      if (!this.canvas) {
+        return;
+      }
+      this.image.src = this.canvas.toDataURL();
+
+      this.div.setAttribute('data-loaded', true);
+      this.ring.appendChild(this.image);
+
+      // Zeroing the width and height causes Firefox to release graphics
+      // resources immediately, which can greatly reduce memory consumption.
+      this.canvas.width = 0;
+      this.canvas.height = 0;
+      delete this.canvas;
+    },
+
+    draw: function PDFThumbnailView_draw() {
+      if (this.renderingState !== RenderingStates.INITIAL) {
+        console.error('Must be in new state before drawing');
+      }
+      if (this.hasImage) {
+        return Promise.resolve(undefined);
+      }
+      this.hasImage = true;
+      this.renderingState = RenderingStates.RUNNING;
+
+      var resolveRenderPromise, rejectRenderPromise;
+      var promise = new Promise(function (resolve, reject) {
+        resolveRenderPromise = resolve;
+        rejectRenderPromise = reject;
+      });
+
+      var self = this;
+      function thumbnailDrawCallback(error) {
+        // The renderTask may have been replaced by a new one, so only remove
+        // the reference to the renderTask if it matches the one that is
+        // triggering this callback.
+        if (renderTask === self.renderTask) {
+          self.renderTask = null;
+        }
+        if (error === 'cancelled') {
+          rejectRenderPromise(error);
+          return;
+        }
+        self.renderingState = RenderingStates.FINISHED;
+        self._convertCanvasToImage();
+
+        if (!error) {
+          resolveRenderPromise(undefined);
+        } else {
+          rejectRenderPromise(error);
+        }
+      }
+
+      var ctx = this._getPageDrawContext();
+      var drawViewport = this.viewport.clone({ scale: this.scale });
+      var renderContinueCallback = function renderContinueCallback(cont) {
+        if (!self.renderingQueue.isHighestPriority(self)) {
+          self.renderingState = RenderingStates.PAUSED;
+          self.resume = function resumeCallback() {
+            self.renderingState = RenderingStates.RUNNING;
+            cont();
+          };
+          return;
+        }
+        cont();
+      };
+
+      var renderContext = {
+        canvasContext: ctx,
+        viewport: drawViewport
+      };
+      var renderTask = this.renderTask = this.pdfPage.render(renderContext);
+      renderTask.onContinue = renderContinueCallback;
+
+      renderTask.promise.then(
+        function pdfPageRenderCallback() {
+          thumbnailDrawCallback(null);
+        },
+        function pdfPageRenderError(error) {
+          thumbnailDrawCallback(error);
+        }
+      );
+      return promise;
+    },
+
+    setImage: function PDFThumbnailView_setImage(pageView) {
+      var img = pageView.canvas;
+      if (this.hasImage || !img) {
+        return;
+      }
+      if (!this.pdfPage) {
+        this.setPdfPage(pageView.pdfPage);
+      }
+      this.hasImage = true;
+      this.renderingState = RenderingStates.FINISHED;
+
+      var ctx = this._getPageDrawContext(true);
+      var canvas = ctx.canvas;
+
+      if (img.width <= 2 * canvas.width) {
+        ctx.drawImage(img, 0, 0, img.width, img.height,
+                      0, 0, canvas.width, canvas.height);
+        this._convertCanvasToImage();
+        return;
+      }
+      // drawImage does an awful job of rescaling the image, doing it gradually.
+      var MAX_NUM_SCALING_STEPS = 3;
+      var reducedWidth = canvas.width << MAX_NUM_SCALING_STEPS;
+      var reducedHeight = canvas.height << MAX_NUM_SCALING_STEPS;
+      var reducedImage = getTempCanvas(reducedWidth, reducedHeight);
+      var reducedImageCtx = reducedImage.getContext('2d');
+
+      while (reducedWidth > img.width || reducedHeight > img.height) {
+        reducedWidth >>= 1;
+        reducedHeight >>= 1;
+      }
+      reducedImageCtx.drawImage(img, 0, 0, img.width, img.height,
+                                0, 0, reducedWidth, reducedHeight);
+      while (reducedWidth > 2 * canvas.width) {
+        reducedImageCtx.drawImage(reducedImage,
+                                  0, 0, reducedWidth, reducedHeight,
+                                  0, 0, reducedWidth >> 1, reducedHeight >> 1);
+        reducedWidth >>= 1;
+        reducedHeight >>= 1;
+      }
+      ctx.drawImage(reducedImage, 0, 0, reducedWidth, reducedHeight,
+                    0, 0, canvas.width, canvas.height);
+      this._convertCanvasToImage();
+    }
+  };
+
+  return PDFThumbnailView;
+})();
+
+PDFThumbnailView.tempImageCache = null;
+
+
+/**
+ * @typedef {Object} PDFThumbnailViewerOptions
+ * @property {HTMLDivElement} container - The container for the thumbnail
+ *   elements.
+ * @property {IPDFLinkService} linkService - The navigation/linking service.
+ * @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
+ */
+
+/**
+ * Simple viewer control to display thumbnails for pages.
+ * @class
+ * @implements {IRenderableView}
+ */
+var PDFThumbnailViewer = (function PDFThumbnailViewerClosure() {
+  /**
+   * @constructs PDFThumbnailViewer
+   * @param {PDFThumbnailViewerOptions} options
+   */
+  function PDFThumbnailViewer(options) {
+    this.container = options.container;
+    this.renderingQueue = options.renderingQueue;
+    this.linkService = options.linkService;
+
+    this.scroll = watchScroll(this.container, this._scrollUpdated.bind(this));
+    this._resetView();
+  }
+
+  PDFThumbnailViewer.prototype = {
+    /**
+     * @private
+     */
+    _scrollUpdated: function PDFThumbnailViewer_scrollUpdated() {
+      this.renderingQueue.renderHighestPriority();
+    },
+
+    getThumbnail: function PDFThumbnailViewer_getThumbnail(index) {
+      return this.thumbnails[index];
+    },
+
+    /**
+     * @private
+     */
+    _getVisibleThumbs: function PDFThumbnailViewer_getVisibleThumbs() {
+      return getVisibleElements(this.container, this.thumbnails);
+    },
+
+    scrollThumbnailIntoView:
+        function PDFThumbnailViewer_scrollThumbnailIntoView(page) {
+      var selected = document.querySelector('.thumbnail.selected');
+      if (selected) {
+        selected.classList.remove('selected');
+      }
+      var thumbnail = document.getElementById('thumbnailContainer' + page);
+      if (thumbnail) {
+        thumbnail.classList.add('selected');
+      }
+      var visibleThumbs = this._getVisibleThumbs();
+      var numVisibleThumbs = visibleThumbs.views.length;
+
+      // If the thumbnail isn't currently visible, scroll it into view.
+      if (numVisibleThumbs > 0) {
+        var first = visibleThumbs.first.id;
+        // Account for only one thumbnail being visible.
+        var last = (numVisibleThumbs > 1 ? visibleThumbs.last.id : first);
+        if (page <= first || page >= last) {
+          scrollIntoView(thumbnail, { top: THUMBNAIL_SCROLL_MARGIN });
+        }
+      }
+    },
+
+    get pagesRotation() {
+      return this._pagesRotation;
+    },
+
+    set pagesRotation(rotation) {
+      this._pagesRotation = rotation;
+      for (var i = 0, l = this.thumbnails.length; i < l; i++) {
+        var thumb = this.thumbnails[i];
+        thumb.update(rotation);
+      }
+    },
+
+    cleanup: function PDFThumbnailViewer_cleanup() {
+      var tempCanvas = PDFThumbnailView.tempImageCache;
+      if (tempCanvas) {
+        // Zeroing the width and height causes Firefox to release graphics
+        // resources immediately, which can greatly reduce memory consumption.
+        tempCanvas.width = 0;
+        tempCanvas.height = 0;
+      }
+      PDFThumbnailView.tempImageCache = null;
+    },
+
+    /**
+     * @private
+     */
+    _resetView: function PDFThumbnailViewer_resetView() {
+      this.thumbnails = [];
+      this._pagesRotation = 0;
+      this._pagesRequests = [];
+    },
+
+    setDocument: function PDFThumbnailViewer_setDocument(pdfDocument) {
+      if (this.pdfDocument) {
+        // cleanup of the elements and views
+        var thumbsView = this.container;
+        while (thumbsView.hasChildNodes()) {
+          thumbsView.removeChild(thumbsView.lastChild);
+        }
+        this._resetView();
+      }
+
+      this.pdfDocument = pdfDocument;
+      if (!pdfDocument) {
+        return Promise.resolve();
+      }
+
+      return pdfDocument.getPage(1).then(function (firstPage) {
+        var pagesCount = pdfDocument.numPages;
+        var viewport = firstPage.getViewport(1.0);
+        for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
+          var thumbnail = new PDFThumbnailView({
+            container: this.container,
+            id: pageNum,
+            defaultViewport: viewport.clone(),
+            linkService: this.linkService,
+            renderingQueue: this.renderingQueue
+          });
+          this.thumbnails.push(thumbnail);
+        }
+      }.bind(this));
+    },
+
+    /**
+     * @param {PDFPageView} pageView
+     * @returns {PDFPage}
+     * @private
+     */
+    _ensurePdfPageLoaded:
+        function PDFThumbnailViewer_ensurePdfPageLoaded(thumbView) {
+      if (thumbView.pdfPage) {
+        return Promise.resolve(thumbView.pdfPage);
+      }
+      var pageNumber = thumbView.id;
+      if (this._pagesRequests[pageNumber]) {
+        return this._pagesRequests[pageNumber];
+      }
+      var promise = this.pdfDocument.getPage(pageNumber).then(
+        function (pdfPage) {
+          thumbView.setPdfPage(pdfPage);
+          this._pagesRequests[pageNumber] = null;
+          return pdfPage;
+        }.bind(this));
+      this._pagesRequests[pageNumber] = promise;
+      return promise;
+    },
+
+    ensureThumbnailVisible:
+        function PDFThumbnailViewer_ensureThumbnailVisible(page) {
+      // Ensure that the thumbnail of the current page is visible
+      // when switching from another view.
+      scrollIntoView(document.getElementById('thumbnailContainer' + page));
+    },
+
+    forceRendering: function () {
+      var visibleThumbs = this._getVisibleThumbs();
+      var thumbView = this.renderingQueue.getHighestPriority(visibleThumbs,
+                                                             this.thumbnails,
+                                                             this.scroll.down);
+      if (thumbView) {
+        this._ensurePdfPageLoaded(thumbView).then(function () {
+          this.renderingQueue.renderView(thumbView);
+        }.bind(this));
+        return true;
+      }
+      return false;
+    }
+  };
+
+  return PDFThumbnailViewer;
+})();
+
+
+/**
+ * @typedef {Object} PDFOutlineViewOptions
+ * @property {HTMLDivElement} container - The viewer element.
+ * @property {Array} outline - An array of outline objects.
+ * @property {IPDFLinkService} linkService - The navigation/linking service.
+ */
+
+/**
+ * @class
+ */
+var PDFOutlineView = (function PDFOutlineViewClosure() {
+  /**
+   * @constructs PDFOutlineView
+   * @param {PDFOutlineViewOptions} options
+   */
+  function PDFOutlineView(options) {
+    this.container = options.container;
+    this.outline = options.outline;
+    this.linkService = options.linkService;
+    this.lastToggleIsShow = true;
+  }
+
+  PDFOutlineView.prototype = {
+    reset: function PDFOutlineView_reset() {
+      var container = this.container;
+      while (container.firstChild) {
+        container.removeChild(container.firstChild);
+      }
+      this.lastToggleIsShow = true;
+    },
+
+    /**
+     * @private
+     */
+    _dispatchEvent: function PDFOutlineView_dispatchEvent(outlineCount) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('outlineloaded', true, true, {
+        outlineCount: outlineCount
+      });
+      this.container.dispatchEvent(event);
+    },
+
+    /**
+     * @private
+     */
+    _bindLink: function PDFOutlineView_bindLink(element, item) {
+      if (item.url) {
+        PDFJS.addLinkAttributes(element, { url: item.url });
+        return;
+      }
+      var linkService = this.linkService;
+      element.href = linkService.getDestinationHash(item.dest);
+      element.onclick = function goToDestination(e) {
+        linkService.navigateTo(item.dest);
+        return false;
+      };
+    },
+
+    /**
+     * Prepend a button before an outline item which allows the user to toggle
+     * the visibility of all outline items at that level.
+     *
+     * @private
+     */
+    _addToggleButton: function PDFOutlineView_addToggleButton(div) {
+      var toggler = document.createElement('div');
+      toggler.className = 'outlineItemToggler';
+      toggler.onclick = function(event) {
+        event.stopPropagation();
+        toggler.classList.toggle('outlineItemsHidden');
+
+        if (event.shiftKey) {
+          var shouldShowAll = !toggler.classList.contains('outlineItemsHidden');
+          this._toggleOutlineItem(div, shouldShowAll);
+        }
+      }.bind(this);
+      div.insertBefore(toggler, div.firstChild);
+    },
+
+    /**
+     * Toggle the visibility of the subtree of an outline item.
+     *
+     * @param {Element} root - the root of the outline (sub)tree.
+     * @param {boolean} state - whether to show the outline (sub)tree. If false,
+     *   the outline subtree rooted at |root| will be collapsed.
+     *
+     * @private
+     */
+    _toggleOutlineItem: function PDFOutlineView_toggleOutlineItem(root, show) {
+      this.lastToggleIsShow = show;
+      var togglers = root.querySelectorAll('.outlineItemToggler');
+      for (var i = 0, ii = togglers.length; i < ii; ++i) {
+        togglers[i].classList[show ? 'remove' : 'add']('outlineItemsHidden');
+      }
+    },
+
+    /**
+     * Collapse or expand all subtrees of the outline.
+     */
+    toggleOutlineTree: function PDFOutlineView_toggleOutlineTree() {
+      this._toggleOutlineItem(this.container, !this.lastToggleIsShow);
+    },
+
+    render: function PDFOutlineView_render() {
+      var outline = this.outline;
+      var outlineCount = 0;
+
+      this.reset();
+
+      if (!outline) {
+        this._dispatchEvent(outlineCount);
+        return;
+      }
+
+      var fragment = document.createDocumentFragment();
+      var queue = [{ parent: fragment, items: this.outline }];
+      var hasAnyNesting = false;
+      while (queue.length > 0) {
+        var levelData = queue.shift();
+        for (var i = 0, len = levelData.items.length; i < len; i++) {
+          var item = levelData.items[i];
+          var div = document.createElement('div');
+          div.className = 'outlineItem';
+          var element = document.createElement('a');
+          this._bindLink(element, item);
+          element.textContent = PDFJS.removeNullCharacters(item.title);
+          div.appendChild(element);
+
+          if (item.items.length > 0) {
+            hasAnyNesting = true;
+            this._addToggleButton(div);
+
+            var itemsDiv = document.createElement('div');
+            itemsDiv.className = 'outlineItems';
+            div.appendChild(itemsDiv);
+            queue.push({ parent: itemsDiv, items: item.items });
+          }
+
+          levelData.parent.appendChild(div);
+          outlineCount++;
+        }
+      }
+      if (hasAnyNesting) {
+        this.container.classList.add('outlineWithDeepNesting');
+      }
+
+      this.container.appendChild(fragment);
+
+      this._dispatchEvent(outlineCount);
+    }
+  };
+
+  return PDFOutlineView;
+})();
+
+
+/**
+ * @typedef {Object} PDFAttachmentViewOptions
+ * @property {HTMLDivElement} container - The viewer element.
+ * @property {Array} attachments - An array of attachment objects.
+ * @property {DownloadManager} downloadManager - The download manager.
+ */
+
+/**
+ * @class
+ */
+var PDFAttachmentView = (function PDFAttachmentViewClosure() {
+  /**
+   * @constructs PDFAttachmentView
+   * @param {PDFAttachmentViewOptions} options
+   */
+  function PDFAttachmentView(options) {
+    this.container = options.container;
+    this.attachments = options.attachments;
+    this.downloadManager = options.downloadManager;
+  }
+
+  PDFAttachmentView.prototype = {
+    reset: function PDFAttachmentView_reset() {
+      var container = this.container;
+      while (container.firstChild) {
+        container.removeChild(container.firstChild);
+      }
+    },
+
+    /**
+     * @private
+     */
+    _dispatchEvent: function PDFAttachmentView_dispatchEvent(attachmentsCount) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('attachmentsloaded', true, true, {
+        attachmentsCount: attachmentsCount
+      });
+      this.container.dispatchEvent(event);
+    },
+
+    /**
+     * @private
+     */
+    _bindLink: function PDFAttachmentView_bindLink(button, content, filename) {
+      button.onclick = function downloadFile(e) {
+        this.downloadManager.downloadData(content, filename, '');
+        return false;
+      }.bind(this);
+    },
+
+    render: function PDFAttachmentView_render() {
+      var attachments = this.attachments;
+      var attachmentsCount = 0;
+
+      this.reset();
+
+      if (!attachments) {
+        this._dispatchEvent(attachmentsCount);
+        return;
+      }
+
+      var names = Object.keys(attachments).sort(function(a, b) {
+        return a.toLowerCase().localeCompare(b.toLowerCase());
+      });
+      attachmentsCount = names.length;
+
+      for (var i = 0; i < attachmentsCount; i++) {
+        var item = attachments[names[i]];
+        var filename = getFileName(item.filename);
+        var div = document.createElement('div');
+        div.className = 'attachmentsItem';
+        var button = document.createElement('button');
+        this._bindLink(button, item.content, filename);
+        button.textContent = PDFJS.removeNullCharacters(filename);
+        div.appendChild(button);
+        this.container.appendChild(div);
+      }
+
+      this._dispatchEvent(attachmentsCount);
+    }
+  };
+
+  return PDFAttachmentView;
+})();
+
+
+var PDFViewerApplication = {
+  initialBookmark: document.location.hash.substring(1),
+  initialDestination: null,
+  initialized: false,
+  fellback: false,
+  pdfDocument: null,
+  pdfLoadingTask: null,
+  sidebarOpen: false,
+  printing: false,
+  /** @type {PDFViewer} */
+  pdfViewer: null,
+  /** @type {PDFThumbnailViewer} */
+  pdfThumbnailViewer: null,
+  /** @type {PDFRenderingQueue} */
+  pdfRenderingQueue: null,
+  /** @type {PDFPresentationMode} */
+  pdfPresentationMode: null,
+  /** @type {PDFDocumentProperties} */
+  pdfDocumentProperties: null,
+  /** @type {PDFLinkService} */
+  pdfLinkService: null,
+  /** @type {PDFHistory} */
+  pdfHistory: null,
+  pageRotation: 0,
+  isInitialViewSet: false,
+  animationStartedPromise: null,
+  preferenceSidebarViewOnLoad: SidebarView.NONE,
+  preferencePdfBugEnabled: false,
+  preferenceShowPreviousViewOnLoad: true,
+  preferenceDefaultZoomValue: '',
+  isViewerEmbedded: (window.parent !== window),
+  url: '',
+
+  // called once when the document is loaded
+  initialize: function pdfViewInitialize() {
+    var pdfRenderingQueue = new PDFRenderingQueue();
+    pdfRenderingQueue.onIdle = this.cleanup.bind(this);
+    this.pdfRenderingQueue = pdfRenderingQueue;
+
+    var pdfLinkService = new PDFLinkService();
+    this.pdfLinkService = pdfLinkService;
+
+    var container = document.getElementById('viewerContainer');
+    var viewer = document.getElementById('viewer');
+    this.pdfViewer = new PDFViewer({
+      container: container,
+      viewer: viewer,
+      renderingQueue: pdfRenderingQueue,
+      linkService: pdfLinkService
+    });
+    pdfRenderingQueue.setViewer(this.pdfViewer);
+    pdfLinkService.setViewer(this.pdfViewer);
+
+    var thumbnailContainer = document.getElementById('thumbnailView');
+    this.pdfThumbnailViewer = new PDFThumbnailViewer({
+      container: thumbnailContainer,
+      renderingQueue: pdfRenderingQueue,
+      linkService: pdfLinkService
+    });
+    pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
+
+    Preferences.initialize();
+
+    this.pdfHistory = new PDFHistory({
+      linkService: pdfLinkService
+    });
+    pdfLinkService.setHistory(this.pdfHistory);
+
+    this.findController = new PDFFindController({
+      pdfViewer: this.pdfViewer,
+      integratedFind: this.supportsIntegratedFind
+    });
+    this.pdfViewer.setFindController(this.findController);
+
+    this.findBar = new PDFFindBar({
+      bar: document.getElementById('findbar'),
+      toggleButton: document.getElementById('viewFind'),
+      findField: document.getElementById('findInput'),
+      highlightAllCheckbox: document.getElementById('findHighlightAll'),
+      caseSensitiveCheckbox: document.getElementById('findMatchCase'),
+      findMsg: document.getElementById('findMsg'),
+      findResultsCount: document.getElementById('findResultsCount'),
+      findStatusIcon: document.getElementById('findStatusIcon'),
+      findPreviousButton: document.getElementById('findPrevious'),
+      findNextButton: document.getElementById('findNext'),
+      findController: this.findController
+    });
+
+    this.findController.setFindBar(this.findBar);
+
+    HandTool.initialize({
+      container: container,
+      toggleHandTool: document.getElementById('toggleHandTool')
+    });
+
+    this.pdfDocumentProperties = new PDFDocumentProperties({
+      overlayName: 'documentPropertiesOverlay',
+      closeButton: document.getElementById('documentPropertiesClose'),
+      fields: {
+        'fileName': document.getElementById('fileNameField'),
+        'fileSize': document.getElementById('fileSizeField'),
+        'title': document.getElementById('titleField'),
+        'author': document.getElementById('authorField'),
+        'subject': document.getElementById('subjectField'),
+        'keywords': document.getElementById('keywordsField'),
+        'creationDate': document.getElementById('creationDateField'),
+        'modificationDate': document.getElementById('modificationDateField'),
+        'creator': document.getElementById('creatorField'),
+        'producer': document.getElementById('producerField'),
+        'version': document.getElementById('versionField'),
+        'pageCount': document.getElementById('pageCountField')
+      }
+    });
+
+    SecondaryToolbar.initialize({
+      toolbar: document.getElementById('secondaryToolbar'),
+      toggleButton: document.getElementById('secondaryToolbarToggle'),
+      presentationModeButton:
+        document.getElementById('secondaryPresentationMode'),
+      openFile: document.getElementById('secondaryOpenFile'),
+      print: document.getElementById('secondaryPrint'),
+      download: document.getElementById('secondaryDownload'),
+      viewBookmark: document.getElementById('secondaryViewBookmark'),
+      firstPage: document.getElementById('firstPage'),
+      lastPage: document.getElementById('lastPage'),
+      pageRotateCw: document.getElementById('pageRotateCw'),
+      pageRotateCcw: document.getElementById('pageRotateCcw'),
+      documentPropertiesButton: document.getElementById('documentProperties')
+    });
+
+    if (this.supportsFullscreen) {
+      var toolbar = SecondaryToolbar;
+      this.pdfPresentationMode = new PDFPresentationMode({
+        container: container,
+        viewer: viewer,
+        pdfViewer: this.pdfViewer,
+        pdfThumbnailViewer: this.pdfThumbnailViewer,
+        contextMenuItems: [
+          { element: document.getElementById('contextFirstPage'),
+            handler: toolbar.firstPageClick.bind(toolbar) },
+          { element: document.getElementById('contextLastPage'),
+            handler: toolbar.lastPageClick.bind(toolbar) },
+          { element: document.getElementById('contextPageRotateCw'),
+            handler: toolbar.pageRotateCwClick.bind(toolbar) },
+          { element: document.getElementById('contextPageRotateCcw'),
+            handler: toolbar.pageRotateCcwClick.bind(toolbar) }
+        ]
+      });
+    }
+
+    PasswordPrompt.initialize({
+      overlayName: 'passwordOverlay',
+      passwordField: document.getElementById('password'),
+      passwordText: document.getElementById('passwordText'),
+      passwordSubmit: document.getElementById('passwordSubmit'),
+      passwordCancel: document.getElementById('passwordCancel')
+    });
+
+    var self = this;
+    var initializedPromise = Promise.all([
+      Preferences.get('enableWebGL').then(function resolved(value) {
+        PDFJS.disableWebGL = !value;
+      }),
+      Preferences.get('sidebarViewOnLoad').then(function resolved(value) {
+        self.preferenceSidebarViewOnLoad = value;
+      }),
+      Preferences.get('pdfBugEnabled').then(function resolved(value) {
+        self.preferencePdfBugEnabled = value;
+      }),
+      Preferences.get('showPreviousViewOnLoad').then(function resolved(value) {
+        self.preferenceShowPreviousViewOnLoad = value;
+      }),
+      Preferences.get('defaultZoomValue').then(function resolved(value) {
+        self.preferenceDefaultZoomValue = value;
+      }),
+      Preferences.get('disableTextLayer').then(function resolved(value) {
+        if (PDFJS.disableTextLayer === true) {
+          return;
+        }
+        PDFJS.disableTextLayer = value;
+      }),
+      Preferences.get('disableRange').then(function resolved(value) {
+        if (PDFJS.disableRange === true) {
+          return;
+        }
+        PDFJS.disableRange = value;
+      }),
+      Preferences.get('disableStream').then(function resolved(value) {
+        if (PDFJS.disableStream === true) {
+          return;
+        }
+        PDFJS.disableStream = value;
+      }),
+      Preferences.get('disableAutoFetch').then(function resolved(value) {
+        PDFJS.disableAutoFetch = value;
+      }),
+      Preferences.get('disableFontFace').then(function resolved(value) {
+        if (PDFJS.disableFontFace === true) {
+          return;
+        }
+        PDFJS.disableFontFace = value;
+      }),
+      Preferences.get('useOnlyCssZoom').then(function resolved(value) {
+        PDFJS.useOnlyCssZoom = value;
+      }),
+      Preferences.get('externalLinkTarget').then(function resolved(value) {
+        if (PDFJS.isExternalLinkTargetSet()) {
+          return;
+        }
+        PDFJS.externalLinkTarget = value;
+      }),
+      // TODO move more preferences and other async stuff here
+    ]).catch(function (reason) { });
+
+    return initializedPromise.then(function () {
+      if (self.isViewerEmbedded && !PDFJS.isExternalLinkTargetSet()) {
+        // Prevent external links from "replacing" the viewer,
+        // when it's embedded in e.g. an iframe or an object.
+        PDFJS.externalLinkTarget = PDFJS.LinkTarget.TOP;
+      }
+
+      self.initialized = true;
+    });
+  },
+
+  zoomIn: function pdfViewZoomIn(ticks) {
+    var newScale = this.pdfViewer.currentScale;
+    do {
+      newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
+      newScale = Math.ceil(newScale * 10) / 10;
+      newScale = Math.min(MAX_SCALE, newScale);
+    } while (--ticks > 0 && newScale < MAX_SCALE);
+    this.pdfViewer.currentScaleValue = newScale;
+  },
+
+  zoomOut: function pdfViewZoomOut(ticks) {
+    var newScale = this.pdfViewer.currentScale;
+    do {
+      newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
+      newScale = Math.floor(newScale * 10) / 10;
+      newScale = Math.max(MIN_SCALE, newScale);
+    } while (--ticks > 0 && newScale > MIN_SCALE);
+    this.pdfViewer.currentScaleValue = newScale;
+  },
+
+  get pagesCount() {
+    return this.pdfDocument.numPages;
+  },
+
+  set page(val) {
+    this.pdfLinkService.page = val;
+  },
+
+  get page() { // TODO remove
+    return this.pdfLinkService.page;
+  },
+
+  get supportsPrinting() {
+    var canvas = document.createElement('canvas');
+    var value = 'mozPrintCallback' in canvas;
+
+    return PDFJS.shadow(this, 'supportsPrinting', value);
+  },
+
+  get supportsFullscreen() {
+    var doc = document.documentElement;
+    var support = !!(doc.requestFullscreen || doc.mozRequestFullScreen ||
+                     doc.webkitRequestFullScreen || doc.msRequestFullscreen);
+
+    if (document.fullscreenEnabled === false ||
+        document.mozFullScreenEnabled === false ||
+        document.webkitFullscreenEnabled === false ||
+        document.msFullscreenEnabled === false) {
+      support = false;
+    }
+    if (support && PDFJS.disableFullscreen === true) {
+      support = false;
+    }
+
+    return PDFJS.shadow(this, 'supportsFullscreen', support);
+  },
+
+  get supportsIntegratedFind() {
+    var support = false;
+
+    return PDFJS.shadow(this, 'supportsIntegratedFind', support);
+  },
+
+  get supportsDocumentFonts() {
+    var support = true;
+
+    return PDFJS.shadow(this, 'supportsDocumentFonts', support);
+  },
+
+  get supportsDocumentColors() {
+    var support = true;
+
+    return PDFJS.shadow(this, 'supportsDocumentColors', support);
+  },
+
+  get loadingBar() {
+    var bar = new ProgressBar('#loadingBar', {});
+
+    return PDFJS.shadow(this, 'loadingBar', bar);
+  },
+
+  get supportedMouseWheelZoomModifierKeys() {
+    var support = {
+      ctrlKey: true,
+      metaKey: true,
+    };
+
+    return PDFJS.shadow(this, 'supportedMouseWheelZoomModifierKeys', support);
+  },
+
+
+  setTitleUsingUrl: function pdfViewSetTitleUsingUrl(url) {
+    this.url = url;
+    try {
+      this.setTitle(decodeURIComponent(getFileName(url)) || url);
+    } catch (e) {
+      // decodeURIComponent may throw URIError,
+      // fall back to using the unprocessed url in that case
+      this.setTitle(url);
+    }
+  },
+
+  setTitle: function pdfViewSetTitle(title) {
+    if (this.isViewerEmbedded) {
+      // Embedded PDF viewers should not be changing their parent page's title.
+      return;
+    }
+    document.title = title;
+  },
+
+  /**
+   * Closes opened PDF document.
+   * @returns {Promise} - Returns the promise, which is resolved when all
+   *                      destruction is completed.
+   */
+  close: function pdfViewClose() {
+    var errorWrapper = document.getElementById('errorWrapper');
+    errorWrapper.setAttribute('hidden', 'true');
+
+    if (!this.pdfLoadingTask) {
+      return Promise.resolve();
+    }
+
+    var promise = this.pdfLoadingTask.destroy();
+    this.pdfLoadingTask = null;
+
+    if (this.pdfDocument) {
+      this.pdfDocument = null;
+
+      this.pdfThumbnailViewer.setDocument(null);
+      this.pdfViewer.setDocument(null);
+      this.pdfLinkService.setDocument(null, null);
+    }
+
+    if (typeof PDFBug !== 'undefined') {
+      PDFBug.cleanup();
+    }
+    return promise;
+  },
+
+  /**
+   * Opens PDF document specified by URL or array with additional arguments.
+   * @param {string|TypedArray|ArrayBuffer} file - PDF location or binary data.
+   * @param {Object} args - (optional) Additional arguments for the getDocument
+   *                        call, e.g. HTTP headers ('httpHeaders') or
+   *                        alternative data transport ('range').
+   * @returns {Promise} - Returns the promise, which is resolved when document
+   *                      is opened.
+   */
+  open: function pdfViewOpen(file, args) {
+    var scale = 0;
+    if (arguments.length > 2 || typeof args === 'number') {
+      console.warn('Call of open() with obsolete signature.');
+      if (typeof args === 'number') {
+        scale = args; // scale argument was found
+      }
+      args = arguments[4] || null;
+      if (arguments[3] && typeof arguments[3] === 'object') {
+        // The pdfDataRangeTransport argument is present.
+        args = Object.create(args);
+        args.range = arguments[3];
+      }
+      if (typeof arguments[2] === 'string') {
+        // The password argument is present.
+        args = Object.create(args);
+        args.password = arguments[2];
+      }
+    }
+
+    if (this.pdfLoadingTask) {
+      // We need to destroy already opened document.
+      return this.close().then(function () {
+        // Reload the preferences if a document was previously opened.
+        Preferences.reload();
+        // ... and repeat the open() call.
+        return this.open(file, args);
+      }.bind(this));
+    }
+
+    var parameters = Object.create(null);
+    if (typeof file === 'string') { // URL
+      this.setTitleUsingUrl(file);
+      parameters.url = file;
+    } else if (file && 'byteLength' in file) { // ArrayBuffer
+      parameters.data = file;
+    } else if (file.url && file.originalUrl) {
+      this.setTitleUsingUrl(file.originalUrl);
+      parameters.url = file.url;
+    }
+    if (args) {
+      for (var prop in args) {
+        parameters[prop] = args[prop];
+      }
+    }
+
+    var self = this;
+    self.downloadComplete = false;
+
+    var loadingTask = PDFJS.getDocument(parameters);
+    this.pdfLoadingTask = loadingTask;
+
+    loadingTask.onPassword = function passwordNeeded(updatePassword, reason) {
+      PasswordPrompt.updatePassword = updatePassword;
+      PasswordPrompt.reason = reason;
+      PasswordPrompt.open();
+    };
+
+    loadingTask.onProgress = function getDocumentProgress(progressData) {
+      self.progress(progressData.loaded / progressData.total);
+    };
+
+    // Listen for unsupported features to trigger the fallback UI.
+    loadingTask.onUnsupportedFeature = this.fallback.bind(this);
+
+    var result = loadingTask.promise.then(
+      function getDocumentCallback(pdfDocument) {
+        self.load(pdfDocument, scale);
+      },
+      function getDocumentError(exception) {
+        var message = exception && exception.message;
+        var loadingErrorMessage = 'An error occurred while loading the PDF.';
+
+        if (exception instanceof PDFJS.InvalidPDFException) {
+          // change error message also for other builds
+          loadingErrorMessage = 'Invalid or corrupted PDF file.';
+        } else if (exception instanceof PDFJS.MissingPDFException) {
+          // special message for missing PDF's
+          loadingErrorMessage = 'Missing PDF file.';
+        } else if (exception instanceof PDFJS.UnexpectedResponseException) {
+          loadingErrorMessage = 'Unexpected server response.';
+        }
+
+        var moreInfo = {
+          message: message
+        };
+        self.error(loadingErrorMessage, moreInfo);
+
+        throw new Error(loadingErrorMessage);
+      }
+    );
+
+    if (args && args.length) {
+      PDFViewerApplication.pdfDocumentProperties.setFileSize(args.length);
+    }
+    return result;
+  },
+
+  download: function pdfViewDownload() {
+    function downloadByUrl() {
+      downloadManager.downloadUrl(url, filename);
+    }
+
+    var url = this.url.split('#')[0];
+    var filename = getPDFFileNameFromURL(url);
+    var downloadManager = new DownloadManager();
+    downloadManager.onerror = function (err) {
+      // This error won't really be helpful because it's likely the
+      // fallback won't work either (or is already open).
+      PDFViewerApplication.error('PDF failed to download.');
+    };
+
+    if (!this.pdfDocument) { // the PDF is not ready yet
+      downloadByUrl();
+      return;
+    }
+
+    if (!this.downloadComplete) { // the PDF is still downloading
+      downloadByUrl();
+      return;
+    }
+
+    this.pdfDocument.getData().then(
+      function getDataSuccess(data) {
+        var blob = PDFJS.createBlob(data, 'application/pdf');
+        downloadManager.download(blob, url, filename);
+      },
+      downloadByUrl // Error occurred try downloading with just the url.
+    ).then(null, downloadByUrl);
+  },
+
+  fallback: function pdfViewFallback(featureId) {
+  },
+
+  /**
+   * Show the error box.
+   * @param {String} message A message that is human readable.
+   * @param {Object} moreInfo (optional) Further information about the error
+   *                            that is more technical.  Should have a 'message'
+   *                            and optionally a 'stack' property.
+   */
+  error: function pdfViewError(message, moreInfo) {
+    var moreInfoText = 'PDF.js v' + (PDFJS.version || '?') + '(build: ' + (PDFJS.build || '?') + ')\n';
+    if (moreInfo) {
+      moreInfoText += 'Message: ' + moreInfo.message
+      if (moreInfo.stack) {
+        moreInfoText += '\nStack: ' + moreInfo.stack;
+      } else {
+        if (moreInfo.filename) {
+          moreInfoText += '\nFile: ' + moreInfo.filename;
+        }
+        if (moreInfo.lineNumber) {
+          moreInfoText += '\nLine: ' + moreInfo.lineNumber;
+        }
+      }
+    }
+
+    var errorWrapper = document.getElementById('errorWrapper');
+    errorWrapper.removeAttribute('hidden');
+
+    var errorMessage = document.getElementById('errorMessage');
+    errorMessage.textContent = message;
+
+    var closeButton = document.getElementById('errorClose');
+    closeButton.onclick = function() {
+      errorWrapper.setAttribute('hidden', 'true');
+    };
+
+    var errorMoreInfo = document.getElementById('errorMoreInfo');
+    var moreInfoButton = document.getElementById('errorShowMore');
+    var lessInfoButton = document.getElementById('errorShowLess');
+    moreInfoButton.onclick = function() {
+      errorMoreInfo.removeAttribute('hidden');
+      moreInfoButton.setAttribute('hidden', 'true');
+      lessInfoButton.removeAttribute('hidden');
+      errorMoreInfo.style.height = errorMoreInfo.scrollHeight + 'px';
+    };
+    lessInfoButton.onclick = function() {
+      errorMoreInfo.setAttribute('hidden', 'true');
+      moreInfoButton.removeAttribute('hidden');
+      lessInfoButton.setAttribute('hidden', 'true');
+    };
+    moreInfoButton.oncontextmenu = noContextMenuHandler;
+    lessInfoButton.oncontextmenu = noContextMenuHandler;
+    closeButton.oncontextmenu = noContextMenuHandler;
+    moreInfoButton.removeAttribute('hidden');
+    lessInfoButton.setAttribute('hidden', 'true');
+    errorMoreInfo.value = moreInfoText;
+  },
+
+  progress: function pdfViewProgress(level) {
+    var percent = Math.round(level * 100);
+    // When we transition from full request to range requests, it's possible
+    // that we discard some of the loaded data. This can cause the loading
+    // bar to move backwards. So prevent this by only updating the bar if it
+    // increases.
+    if (percent > this.loadingBar.percent || isNaN(percent)) {
+      this.loadingBar.percent = percent;
+
+      // When disableAutoFetch is enabled, it's not uncommon for the entire file
+      // to never be fetched (depends on e.g. the file structure). In this case
+      // the loading bar will not be completely filled, nor will it be hidden.
+      // To prevent displaying a partially filled loading bar permanently, we
+      // hide it when no data has been loaded during a certain amount of time.
+      if (PDFJS.disableAutoFetch && percent) {
+        if (this.disableAutoFetchLoadingBarTimeout) {
+          clearTimeout(this.disableAutoFetchLoadingBarTimeout);
+          this.disableAutoFetchLoadingBarTimeout = null;
+        }
+        this.loadingBar.show();
+
+        this.disableAutoFetchLoadingBarTimeout = setTimeout(function () {
+          this.loadingBar.hide();
+          this.disableAutoFetchLoadingBarTimeout = null;
+        }.bind(this), DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT);
+      }
+    }
+  },
+
+  load: function pdfViewLoad(pdfDocument, scale) {
+    var self = this;
+    scale = scale || UNKNOWN_SCALE;
+
+    this.findController.reset();
+
+    this.pdfDocument = pdfDocument;
+
+    this.pdfDocumentProperties.setDocumentAndUrl(pdfDocument, this.url);
+
+    var downloadedPromise = pdfDocument.getDownloadInfo().then(function() {
+      self.downloadComplete = true;
+      self.loadingBar.hide();
+    });
+
+    var pagesCount = pdfDocument.numPages;
+    document.getElementById('numPages').textContent = 'of ' + pagesCount;
+    document.getElementById('pageNumber').max = pagesCount;
+
+    var id = this.documentFingerprint = pdfDocument.fingerprint;
+    var store = this.store = new ViewHistory(id);
+
+    var baseDocumentUrl = null;
+    this.pdfLinkService.setDocument(pdfDocument, baseDocumentUrl);
+
+    var pdfViewer = this.pdfViewer;
+    pdfViewer.currentScale = scale;
+    pdfViewer.setDocument(pdfDocument);
+    var firstPagePromise = pdfViewer.firstPagePromise;
+    var pagesPromise = pdfViewer.pagesPromise;
+    var onePageRendered = pdfViewer.onePageRendered;
+
+    this.pageRotation = 0;
+    this.isInitialViewSet = false;
+
+    this.pdfThumbnailViewer.setDocument(pdfDocument);
+
+    firstPagePromise.then(function(pdfPage) {
+      downloadedPromise.then(function () {
+        var event = document.createEvent('CustomEvent');
+        event.initCustomEvent('documentload', true, true, {});
+        window.dispatchEvent(event);
+      });
+
+      self.loadingBar.setWidth(document.getElementById('viewer'));
+
+      if (!PDFJS.disableHistory && !self.isViewerEmbedded) {
+        // The browsing history is only enabled when the viewer is standalone,
+        // i.e. not when it is embedded in a web page.
+        if (!self.preferenceShowPreviousViewOnLoad) {
+          self.pdfHistory.clearHistoryState();
+        }
+        self.pdfHistory.initialize(self.documentFingerprint);
+
+        if (self.pdfHistory.initialDestination) {
+          self.initialDestination = self.pdfHistory.initialDestination;
+        } else if (self.pdfHistory.initialBookmark) {
+          self.initialBookmark = self.pdfHistory.initialBookmark;
+        }
+      }
+
+      var initialParams = {
+        destination: self.initialDestination,
+        bookmark: self.initialBookmark,
+        hash: null,
+      };
+
+      store.initializedPromise.then(function resolved() {
+        var storedHash = null;
+        if (self.preferenceShowPreviousViewOnLoad &&
+            store.get('exists', false)) {
+          var pageNum = store.get('page', '1');
+          var zoom = self.preferenceDefaultZoomValue ||
+                     store.get('zoom', DEFAULT_SCALE_VALUE);
+          var left = store.get('scrollLeft', '0');
+          var top = store.get('scrollTop', '0');
+
+          storedHash = 'page=' + pageNum + '&zoom=' + zoom + ',' +
+                       left + ',' + top;
+        } else if (self.preferenceDefaultZoomValue) {
+          storedHash = 'page=1&zoom=' + self.preferenceDefaultZoomValue;
+        }
+        self.setInitialView(storedHash, scale);
+
+        initialParams.hash = storedHash;
+
+        // Make all navigation keys work on document load,
+        // unless the viewer is embedded in a web page.
+        if (!self.isViewerEmbedded) {
+          self.pdfViewer.focus();
+        }
+      }, function rejected(reason) {
+        console.error(reason);
+        self.setInitialView(null, scale);
+      });
+
+      // For documents with different page sizes,
+      // ensure that the correct location becomes visible on load.
+      pagesPromise.then(function resolved() {
+        if (!initialParams.destination && !initialParams.bookmark &&
+            !initialParams.hash) {
+          return;
+        }
+        if (self.hasEqualPageSizes) {
+          return;
+        }
+        self.initialDestination = initialParams.destination;
+        self.initialBookmark = initialParams.bookmark;
+
+        self.pdfViewer.currentScaleValue = self.pdfViewer.currentScaleValue;
+        self.setInitialView(initialParams.hash, scale);
+      });
+    });
+
+    pagesPromise.then(function() {
+      if (self.supportsPrinting) {
+        pdfDocument.getJavaScript().then(function(javaScript) {
+          if (javaScript.length) {
+            console.warn('Warning: JavaScript is not supported');
+            self.fallback(PDFJS.UNSUPPORTED_FEATURES.javaScript);
+          }
+          // Hack to support auto printing.
+          var regex = /\bprint\s*\(/;
+          for (var i = 0, ii = javaScript.length; i < ii; i++) {
+            var js = javaScript[i];
+            if (js && regex.test(js)) {
+              setTimeout(function() {
+                window.print();
+              });
+              return;
+            }
+          }
+        });
+      }
+    });
+
+    // outline depends on pagesRefMap
+    var promises = [pagesPromise, this.animationStartedPromise];
+    Promise.all(promises).then(function() {
+      pdfDocument.getOutline().then(function(outline) {
+        var container = document.getElementById('outlineView');
+        self.outline = new PDFOutlineView({
+          container: container,
+          outline: outline,
+          linkService: self.pdfLinkService
+        });
+        self.outline.render();
+        document.getElementById('viewOutline').disabled = !outline;
+
+        if (!outline && !container.classList.contains('hidden')) {
+          self.switchSidebarView('thumbs');
+        }
+        if (outline &&
+            self.preferenceSidebarViewOnLoad === SidebarView.OUTLINE) {
+          self.switchSidebarView('outline', true);
+        }
+      });
+      pdfDocument.getAttachments().then(function(attachments) {
+        var container = document.getElementById('attachmentsView');
+        self.attachments = new PDFAttachmentView({
+          container: container,
+          attachments: attachments,
+          downloadManager: new DownloadManager()
+        });
+        self.attachments.render();
+        document.getElementById('viewAttachments').disabled = !attachments;
+
+        if (!attachments && !container.classList.contains('hidden')) {
+          self.switchSidebarView('thumbs');
+        }
+        if (attachments &&
+            self.preferenceSidebarViewOnLoad === SidebarView.ATTACHMENTS) {
+          self.switchSidebarView('attachments', true);
+        }
+      });
+    });
+
+    if (self.preferenceSidebarViewOnLoad === SidebarView.THUMBS) {
+      Promise.all([firstPagePromise, onePageRendered]).then(function () {
+        self.switchSidebarView('thumbs', true);
+      });
+    }
+
+    pdfDocument.getMetadata().then(function(data) {
+      var info = data.info, metadata = data.metadata;
+      self.documentInfo = info;
+      self.metadata = metadata;
+
+      // Provides some basic debug information
+      console.log('PDF ' + pdfDocument.fingerprint + ' [' +
+                  info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() +
+                  ' / ' + (info.Creator || '-').trim() + ']' +
+                  ' (PDF.js: ' + (PDFJS.version || '-') +
+                  (!PDFJS.disableWebGL ? ' [WebGL]' : '') + ')');
+
+      var pdfTitle;
+      if (metadata && metadata.has('dc:title')) {
+        var title = metadata.get('dc:title');
+        // Ghostscript sometimes return 'Untitled', sets the title to 'Untitled'
+        if (title !== 'Untitled') {
+          pdfTitle = title;
+        }
+      }
+
+      if (!pdfTitle && info && info['Title']) {
+        pdfTitle = info['Title'];
+      }
+
+      if (pdfTitle) {
+        self.setTitle(pdfTitle + ' - ' + document.title);
+      }
+
+      if (info.IsAcroFormPresent) {
+        console.warn('Warning: AcroForm/XFA is not supported');
+        self.fallback(PDFJS.UNSUPPORTED_FEATURES.forms);
+      }
+
+    });
+  },
+
+  setInitialView: function pdfViewSetInitialView(storedHash, scale) {
+    this.isInitialViewSet = true;
+
+    // When opening a new file, when one is already loaded in the viewer,
+    // ensure that the 'pageNumber' element displays the correct value.
+    document.getElementById('pageNumber').value =
+      this.pdfViewer.currentPageNumber;
+
+    if (this.initialDestination) {
+      this.pdfLinkService.navigateTo(this.initialDestination);
+      this.initialDestination = null;
+    } else if (this.initialBookmark) {
+      this.pdfLinkService.setHash(this.initialBookmark);
+      this.pdfHistory.push({ hash: this.initialBookmark }, true);
+      this.initialBookmark = null;
+    } else if (storedHash) {
+      this.pdfLinkService.setHash(storedHash);
+    } else if (scale) {
+      this.pdfViewer.currentScaleValue = scale;
+      this.page = 1;
+    }
+
+    if (!this.pdfViewer.currentScaleValue) {
+      // Scale was not initialized: invalid bookmark or scale was not specified.
+      // Setting the default one.
+      this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
+    }
+  },
+
+  cleanup: function pdfViewCleanup() {
+    if (!this.pdfDocument) {
+      return; // run cleanup when document is loaded
+    }
+    this.pdfViewer.cleanup();
+    this.pdfThumbnailViewer.cleanup();
+    this.pdfDocument.cleanup();
+  },
+
+  forceRendering: function pdfViewForceRendering() {
+    this.pdfRenderingQueue.printing = this.printing;
+    this.pdfRenderingQueue.isThumbnailViewEnabled = this.sidebarOpen;
+    this.pdfRenderingQueue.renderHighestPriority();
+  },
+
+  refreshThumbnailViewer: function pdfViewRefreshThumbnailViewer() {
+    var pdfViewer = this.pdfViewer;
+    var thumbnailViewer = this.pdfThumbnailViewer;
+
+    // set thumbnail images of rendered pages
+    var pagesCount = pdfViewer.pagesCount;
+    for (var pageIndex = 0; pageIndex < pagesCount; pageIndex++) {
+      var pageView = pdfViewer.getPageView(pageIndex);
+      if (pageView && pageView.renderingState === RenderingStates.FINISHED) {
+        var thumbnailView = thumbnailViewer.getThumbnail(pageIndex);
+        thumbnailView.setImage(pageView);
+      }
+    }
+
+    thumbnailViewer.scrollThumbnailIntoView(this.page);
+  },
+
+  switchSidebarView: function pdfViewSwitchSidebarView(view, openSidebar) {
+    if (openSidebar && !this.sidebarOpen) {
+      document.getElementById('sidebarToggle').click();
+    }
+    var thumbsView = document.getElementById('thumbnailView');
+    var outlineView = document.getElementById('outlineView');
+    var attachmentsView = document.getElementById('attachmentsView');
+
+    var thumbsButton = document.getElementById('viewThumbnail');
+    var outlineButton = document.getElementById('viewOutline');
+    var attachmentsButton = document.getElementById('viewAttachments');
+
+    switch (view) {
+      case 'thumbs':
+        var wasAnotherViewVisible = thumbsView.classList.contains('hidden');
+
+        thumbsButton.classList.add('toggled');
+        outlineButton.classList.remove('toggled');
+        attachmentsButton.classList.remove('toggled');
+        thumbsView.classList.remove('hidden');
+        outlineView.classList.add('hidden');
+        attachmentsView.classList.add('hidden');
+
+        this.forceRendering();
+
+        if (wasAnotherViewVisible) {
+          this.pdfThumbnailViewer.ensureThumbnailVisible(this.page);
+        }
+        break;
+
+      case 'outline':
+        if (outlineButton.disabled) {
+          return;
+        }
+        thumbsButton.classList.remove('toggled');
+        outlineButton.classList.add('toggled');
+        attachmentsButton.classList.remove('toggled');
+        thumbsView.classList.add('hidden');
+        outlineView.classList.remove('hidden');
+        attachmentsView.classList.add('hidden');
+        break;
+
+      case 'attachments':
+        if (attachmentsButton.disabled) {
+          return;
+        }
+        thumbsButton.classList.remove('toggled');
+        outlineButton.classList.remove('toggled');
+        attachmentsButton.classList.add('toggled');
+        thumbsView.classList.add('hidden');
+        outlineView.classList.add('hidden');
+        attachmentsView.classList.remove('hidden');
+        break;
+    }
+  },
+
+  beforePrint: function pdfViewSetupBeforePrint() {
+    if (!this.supportsPrinting) {
+      var printMessage = 'Warning: Printing is not fully supported by this browser.';
+      this.error(printMessage);
+      return;
+    }
+
+    var alertNotReady = false;
+    var i, ii;
+    if (!this.pdfDocument || !this.pagesCount) {
+      alertNotReady = true;
+    } else {
+      for (i = 0, ii = this.pagesCount; i < ii; ++i) {
+        if (!this.pdfViewer.getPageView(i).pdfPage) {
+          alertNotReady = true;
+          break;
+        }
+      }
+    }
+    if (alertNotReady) {
+      var notReadyMessage = 'Warning: The PDF is not fully loaded for printing.';
+      window.alert(notReadyMessage);
+      return;
+    }
+
+    this.printing = true;
+    this.forceRendering();
+
+    var body = document.querySelector('body');
+    body.setAttribute('data-mozPrintCallback', true);
+
+    if (!this.hasEqualPageSizes) {
+      console.warn('Not all pages have the same size. The printed result ' +
+          'may be incorrect!');
+    }
+
+    // Insert a @page + size rule to make sure that the page size is correctly
+    // set. Note that we assume that all pages have the same size, because
+    // variable-size pages are not supported yet (at least in Chrome & Firefox).
+    // TODO(robwu): Use named pages when size calculation bugs get resolved
+    // (e.g. https://crbug.com/355116) AND when support for named pages is
+    // added (http://www.w3.org/TR/css3-page/#using-named-pages).
+    // In browsers where @page + size is not supported (such as Firefox,
+    // https://bugzil.la/851441), the next stylesheet will be ignored and the
+    // user has to select the correct paper size in the UI if wanted.
+    this.pageStyleSheet = document.createElement('style');
+    var pageSize = this.pdfViewer.getPageView(0).pdfPage.getViewport(1);
+    this.pageStyleSheet.textContent =
+      // "size:<width> <height>" is what we need. But also add "A4" because
+      // Firefox incorrectly reports support for the other value.
+      '@supports ((size:A4) and (size:1pt 1pt)) {' +
+      '@page { size: ' + pageSize.width + 'pt ' + pageSize.height + 'pt;}' +
+      // The canvas and each ancestor node must have a height of 100% to make
+      // sure that each canvas is printed on exactly one page.
+      '#printContainer {height:100%}' +
+      '#printContainer > div {width:100% !important;height:100% !important;}' +
+      '}';
+    body.appendChild(this.pageStyleSheet);
+
+    for (i = 0, ii = this.pagesCount; i < ii; ++i) {
+      this.pdfViewer.getPageView(i).beforePrint();
+    }
+
+  },
+
+  // Whether all pages of the PDF have the same width and height.
+  get hasEqualPageSizes() {
+    var firstPage = this.pdfViewer.getPageView(0);
+    for (var i = 1, ii = this.pagesCount; i < ii; ++i) {
+      var pageView = this.pdfViewer.getPageView(i);
+      if (pageView.width !== firstPage.width ||
+          pageView.height !== firstPage.height) {
+        return false;
+      }
+    }
+    return true;
+  },
+
+  afterPrint: function pdfViewSetupAfterPrint() {
+    var div = document.getElementById('printContainer');
+    while (div.hasChildNodes()) {
+      div.removeChild(div.lastChild);
+    }
+
+    if (this.pageStyleSheet && this.pageStyleSheet.parentNode) {
+      this.pageStyleSheet.parentNode.removeChild(this.pageStyleSheet);
+      this.pageStyleSheet = null;
+    }
+
+    this.printing = false;
+    this.forceRendering();
+  },
+
+  rotatePages: function pdfViewRotatePages(delta) {
+    var pageNumber = this.page;
+    this.pageRotation = (this.pageRotation + 360 + delta) % 360;
+    this.pdfViewer.pagesRotation = this.pageRotation;
+    this.pdfThumbnailViewer.pagesRotation = this.pageRotation;
+
+    this.forceRendering();
+
+    this.pdfViewer.scrollPageIntoView(pageNumber);
+  },
+
+  requestPresentationMode: function pdfViewRequestPresentationMode() {
+    if (!this.pdfPresentationMode) {
+      return;
+    }
+    this.pdfPresentationMode.request();
+  },
+
+  /**
+   * @param {number} delta - The delta value from the mouse event.
+   */
+  scrollPresentationMode: function pdfViewScrollPresentationMode(delta) {
+    if (!this.pdfPresentationMode) {
+      return;
+    }
+    this.pdfPresentationMode.mouseScroll(delta);
+  }
+};
+window.PDFView = PDFViewerApplication; // obsolete name, using it as an alias
+
+
+var HOSTED_VIEWER_ORIGINS = ['null',
+  'http://mozilla.github.io', 'https://mozilla.github.io'];
+function validateFileURL(file) {
+  try {
+    var viewerOrigin = new URL(window.location.href).origin || 'null';
+    if (HOSTED_VIEWER_ORIGINS.indexOf(viewerOrigin) >= 0) {
+      // Hosted or local viewer, allow for any file locations
+      return;
+    }
+    var fileOrigin = new URL(file, window.location.href).origin;
+    // Removing of the following line will not guarantee that the viewer will
+    // start accepting URLs from foreign origin -- CORS headers on the remote
+    // server must be properly configured.
+    if (fileOrigin !== viewerOrigin) {
+      throw new Error('file origin does not match viewer\'s');
+    }
+  } catch (e) {
+    var message = e && e.message;
+    var loadingErrorMessage = 'An error occurred while loading the PDF.';
+
+    var moreInfo = {
+      message: message
+    };
+    PDFViewerApplication.error(loadingErrorMessage, moreInfo);
+    throw e;
+  }
+}
+
+function webViewerLoad(evt) {
+    configure(PDFJS);
+    PDFViewerApplication.initialize().then(webViewerInitialized);
+}
+
+function webViewerInitialized() {
+  var queryString = document.location.search.substring(1);
+  var params = parseQueryString(queryString);
+  var file = 'file' in params ? params.file : DEFAULT_URL;
+  validateFileURL(file);
+
+  var fileInput = document.createElement('input');
+  fileInput.id = 'fileInput';
+  fileInput.className = 'fileInput';
+  fileInput.setAttribute('type', 'file');
+  fileInput.oncontextmenu = noContextMenuHandler;
+  document.body.appendChild(fileInput);
+
+  if (!window.File || !window.FileReader || !window.FileList || !window.Blob) {
+    document.getElementById('openFile').setAttribute('hidden', 'true');
+    document.getElementById('secondaryOpenFile').setAttribute('hidden', 'true');
+  } else {
+    document.getElementById('fileInput').value = null;
+  }
+
+  var locale = PDFJS.locale || navigator.language;
+
+  if (PDFViewerApplication.preferencePdfBugEnabled) {
+    // Special debugging flags in the hash section of the URL.
+    var hash = document.location.hash.substring(1);
+    var hashParams = parseQueryString(hash);
+
+    if ('disableworker' in hashParams) {
+      PDFJS.disableWorker = (hashParams['disableworker'] === 'true');
+    }
+    if ('disablerange' in hashParams) {
+      PDFJS.disableRange = (hashParams['disablerange'] === 'true');
+    }
+    if ('disablestream' in hashParams) {
+      PDFJS.disableStream = (hashParams['disablestream'] === 'true');
+    }
+    if ('disableautofetch' in hashParams) {
+      PDFJS.disableAutoFetch = (hashParams['disableautofetch'] === 'true');
+    }
+    if ('disablefontface' in hashParams) {
+      PDFJS.disableFontFace = (hashParams['disablefontface'] === 'true');
+    }
+    if ('disablehistory' in hashParams) {
+      PDFJS.disableHistory = (hashParams['disablehistory'] === 'true');
+    }
+    if ('webgl' in hashParams) {
+      PDFJS.disableWebGL = (hashParams['webgl'] !== 'true');
+    }
+    if ('useonlycsszoom' in hashParams) {
+      PDFJS.useOnlyCssZoom = (hashParams['useonlycsszoom'] === 'true');
+    }
+    if ('verbosity' in hashParams) {
+      PDFJS.verbosity = hashParams['verbosity'] | 0;
+    }
+    if ('ignorecurrentpositiononzoom' in hashParams) {
+      IGNORE_CURRENT_POSITION_ON_ZOOM =
+        (hashParams['ignorecurrentpositiononzoom'] === 'true');
+    }
+    if ('locale' in hashParams) {
+      locale = hashParams['locale'];
+    }
+    if ('textlayer' in hashParams) {
+      switch (hashParams['textlayer']) {
+        case 'off':
+          PDFJS.disableTextLayer = true;
+          break;
+        case 'visible':
+        case 'shadow':
+        case 'hover':
+          var viewer = document.getElementById('viewer');
+          viewer.classList.add('textLayer-' + hashParams['textlayer']);
+          break;
+      }
+    }
+    if ('pdfbug' in hashParams) {
+      PDFJS.pdfBug = true;
+      var pdfBug = hashParams['pdfbug'];
+      var enabled = pdfBug.split(',');
+      PDFBug.enable(enabled);
+      PDFBug.init();
+    }
+  }
+
+  if (!PDFViewerApplication.supportsPrinting) {
+    document.getElementById('print').classList.add('hidden');
+    document.getElementById('secondaryPrint').classList.add('hidden');
+  }
+
+  if (!PDFViewerApplication.supportsFullscreen) {
+    document.getElementById('presentationMode').classList.add('hidden');
+    document.getElementById('secondaryPresentationMode').
+      classList.add('hidden');
+  }
+
+  if (PDFViewerApplication.supportsIntegratedFind) {
+    document.getElementById('viewFind').classList.add('hidden');
+  }
+
+  // Suppress context menus for some controls
+  document.getElementById('scaleSelect').oncontextmenu = noContextMenuHandler;
+
+  var mainContainer = document.getElementById('mainContainer');
+  var outerContainer = document.getElementById('outerContainer');
+  mainContainer.addEventListener('transitionend', function(e) {
+    if (e.target === mainContainer) {
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('resize', false, false, window, 0);
+      window.dispatchEvent(event);
+      outerContainer.classList.remove('sidebarMoving');
+    }
+  }, true);
+
+  document.getElementById('sidebarToggle').addEventListener('click',
+    function() {
+      this.classList.toggle('toggled');
+      outerContainer.classList.add('sidebarMoving');
+      outerContainer.classList.toggle('sidebarOpen');
+      PDFViewerApplication.sidebarOpen =
+        outerContainer.classList.contains('sidebarOpen');
+      if (PDFViewerApplication.sidebarOpen) {
+        PDFViewerApplication.refreshThumbnailViewer();
+      }
+      PDFViewerApplication.forceRendering();
+    });
+
+  document.getElementById('viewThumbnail').addEventListener('click',
+    function() {
+      PDFViewerApplication.switchSidebarView('thumbs');
+    });
+
+  document.getElementById('viewOutline').addEventListener('click',
+    function() {
+      PDFViewerApplication.switchSidebarView('outline');
+    });
+
+  document.getElementById('viewOutline').addEventListener('dblclick',
+    function() {
+      PDFViewerApplication.outline.toggleOutlineTree();
+    });
+
+  document.getElementById('viewAttachments').addEventListener('click',
+    function() {
+      PDFViewerApplication.switchSidebarView('attachments');
+    });
+
+  document.getElementById('previous').addEventListener('click',
+    function() {
+      PDFViewerApplication.page--;
+    });
+
+  document.getElementById('next').addEventListener('click',
+    function() {
+      PDFViewerApplication.page++;
+    });
+
+  document.getElementById('zoomIn').addEventListener('click',
+    function() {
+      PDFViewerApplication.zoomIn();
+    });
+
+  document.getElementById('zoomOut').addEventListener('click',
+    function() {
+      PDFViewerApplication.zoomOut();
+    });
+
+  document.getElementById('pageNumber').addEventListener('click', function() {
+    this.select();
+  });
+
+  document.getElementById('pageNumber').addEventListener('change', function() {
+    // Handle the user inputting a floating point number.
+    PDFViewerApplication.page = (this.value | 0);
+
+    if (this.value !== (this.value | 0).toString()) {
+      this.value = PDFViewerApplication.page;
+    }
+  });
+
+  document.getElementById('scaleSelect').addEventListener('change', function() {
+    if (this.value === 'custom') {
+      return;
+    }
+    PDFViewerApplication.pdfViewer.currentScaleValue = this.value;
+  });
+
+  document.getElementById('presentationMode').addEventListener('click',
+    SecondaryToolbar.presentationModeClick.bind(SecondaryToolbar));
+
+  document.getElementById('openFile').addEventListener('click',
+    SecondaryToolbar.openFileClick.bind(SecondaryToolbar));
+
+  document.getElementById('print').addEventListener('click',
+    SecondaryToolbar.printClick.bind(SecondaryToolbar));
+
+  document.getElementById('download').addEventListener('click',
+    SecondaryToolbar.downloadClick.bind(SecondaryToolbar));
+
+
+  if (file && file.lastIndexOf('file:', 0) === 0) {
+    // file:-scheme. Load the contents in the main thread because QtWebKit
+    // cannot load file:-URLs in a Web Worker. file:-URLs are usually loaded
+    // very quickly, so there is no need to set up progress event listeners.
+    PDFViewerApplication.setTitleUsingUrl(file);
+    var xhr = new XMLHttpRequest();
+    xhr.onload = function() {
+      PDFViewerApplication.open(new Uint8Array(xhr.response));
+    };
+    try {
+      xhr.open('GET', file);
+      xhr.responseType = 'arraybuffer';
+      xhr.send();
+    } catch (e) {
+      PDFViewerApplication.error('An error occurred while loading the PDF.', e);
+    }
+    return;
+  }
+
+  if (file) {
+    PDFViewerApplication.open(file);
+  }
+}
+
+document.addEventListener('DOMContentLoaded', webViewerLoad, true);
+
+document.addEventListener('pagerendered', function (e) {
+  var pageNumber = e.detail.pageNumber;
+  var pageIndex = pageNumber - 1;
+  var pageView = PDFViewerApplication.pdfViewer.getPageView(pageIndex);
+
+  if (PDFViewerApplication.sidebarOpen) {
+    var thumbnailView = PDFViewerApplication.pdfThumbnailViewer.
+                        getThumbnail(pageIndex);
+    thumbnailView.setImage(pageView);
+  }
+
+  if (PDFJS.pdfBug && Stats.enabled && pageView.stats) {
+    Stats.add(pageNumber, pageView.stats);
+  }
+
+  if (pageView.error) {
+    PDFViewerApplication.error('An error occurred while rendering the page.', pageView.error);
+  }
+
+  // If the page is still visible when it has finished rendering,
+  // ensure that the page number input loading indicator is hidden.
+  if (pageNumber === PDFViewerApplication.page) {
+    var pageNumberInput = document.getElementById('pageNumber');
+    pageNumberInput.classList.remove(PAGE_NUMBER_LOADING_INDICATOR);
+  }
+
+}, true);
+
+document.addEventListener('textlayerrendered', function (e) {
+  var pageIndex = e.detail.pageNumber - 1;
+  var pageView = PDFViewerApplication.pdfViewer.getPageView(pageIndex);
+
+}, true);
+
+document.addEventListener('pagemode', function (evt) {
+  if (!PDFViewerApplication.initialized) {
+    return;
+  }
+  // Handle the 'pagemode' hash parameter, see also `PDFLinkService_setHash`.
+  var mode = evt.detail.mode;
+  switch (mode) {
+    case 'bookmarks':
+      // Note: Our code calls this property 'outline', even though the
+      //       Open Parameter specification calls it 'bookmarks'.
+      mode = 'outline';
+      /* falls through */
+    case 'thumbs':
+    case 'attachments':
+      PDFViewerApplication.switchSidebarView(mode, true);
+      break;
+    case 'none':
+      if (PDFViewerApplication.sidebarOpen) {
+        document.getElementById('sidebarToggle').click();
+      }
+      break;
+  }
+}, true);
+
+document.addEventListener('namedaction', function (e) {
+  if (!PDFViewerApplication.initialized) {
+    return;
+  }
+  // Processing couple of named actions that might be useful.
+  // See also PDFLinkService.executeNamedAction
+  var action = e.detail.action;
+  switch (action) {
+    case 'GoToPage':
+      document.getElementById('pageNumber').focus();
+      break;
+
+    case 'Find':
+      if (!PDFViewerApplication.supportsIntegratedFind) {
+        PDFViewerApplication.findBar.toggle();
+      }
+      break;
+  }
+}, true);
+
+window.addEventListener('presentationmodechanged', function (e) {
+  var active = e.detail.active;
+  var switchInProgress = e.detail.switchInProgress;
+  PDFViewerApplication.pdfViewer.presentationModeState =
+    switchInProgress ? PresentationModeState.CHANGING :
+    active ? PresentationModeState.FULLSCREEN : PresentationModeState.NORMAL;
+});
+
+window.addEventListener('updateviewarea', function (evt) {
+  if (!PDFViewerApplication.initialized) {
+    return;
+  }
+  var location = evt.location;
+
+  PDFViewerApplication.store.initializedPromise.then(function() {
+    PDFViewerApplication.store.setMultiple({
+      'exists': true,
+      'page': location.pageNumber,
+      'zoom': location.scale,
+      'scrollLeft': location.left,
+      'scrollTop': location.top
+    }).catch(function() {
+      // unable to write to storage
+    });
+  });
+  var href =
+    PDFViewerApplication.pdfLinkService.getAnchorUrl(location.pdfOpenParams);
+  document.getElementById('viewBookmark').href = href;
+  document.getElementById('secondaryViewBookmark').href = href;
+
+  // Update the current bookmark in the browsing history.
+  PDFViewerApplication.pdfHistory.updateCurrentBookmark(location.pdfOpenParams,
+                                                        location.pageNumber);
+
+  // Show/hide the loading indicator in the page number input element.
+  var pageNumberInput = document.getElementById('pageNumber');
+  var currentPage =
+    PDFViewerApplication.pdfViewer.getPageView(PDFViewerApplication.page - 1);
+
+  if (currentPage.renderingState === RenderingStates.FINISHED) {
+    pageNumberInput.classList.remove(PAGE_NUMBER_LOADING_INDICATOR);
+  } else {
+    pageNumberInput.classList.add(PAGE_NUMBER_LOADING_INDICATOR);
+  }
+}, true);
+
+window.addEventListener('resize', function webViewerResize(evt) {
+  if (PDFViewerApplication.initialized) {
+    var currentScaleValue = PDFViewerApplication.pdfViewer.currentScaleValue;
+    if (currentScaleValue === 'auto' ||
+        currentScaleValue === 'page-fit' ||
+        currentScaleValue === 'page-width') {
+      // Note: the scale is constant for 'page-actual'.
+      PDFViewerApplication.pdfViewer.currentScaleValue = currentScaleValue;
+    } else if (!currentScaleValue) {
+      // Normally this shouldn't happen, but if the scale wasn't initialized
+      // we set it to the default value in order to prevent any issues.
+      // (E.g. the document being rendered with the wrong scale on load.)
+      PDFViewerApplication.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
+    }
+    PDFViewerApplication.pdfViewer.update();
+  }
+
+  // Set the 'max-height' CSS property of the secondary toolbar.
+  SecondaryToolbar.setMaxHeight(document.getElementById('viewerContainer'));
+});
+
+window.addEventListener('hashchange', function webViewerHashchange(evt) {
+  if (PDFViewerApplication.pdfHistory.isHashChangeUnlocked) {
+    var hash = document.location.hash.substring(1);
+    if (!hash) {
+      return;
+    }
+    if (!PDFViewerApplication.isInitialViewSet) {
+      PDFViewerApplication.initialBookmark = hash;
+    } else {
+      PDFViewerApplication.pdfLinkService.setHash(hash);
+    }
+  }
+});
+
+window.addEventListener('change', function webViewerChange(evt) {
+  var files = evt.target.files;
+  if (!files || files.length === 0) {
+    return;
+  }
+  var file = files[0];
+
+  if (!PDFJS.disableCreateObjectURL &&
+      typeof URL !== 'undefined' && URL.createObjectURL) {
+    PDFViewerApplication.open(URL.createObjectURL(file));
+  } else {
+    // Read the local file into a Uint8Array.
+    var fileReader = new FileReader();
+    fileReader.onload = function webViewerChangeFileReaderOnload(evt) {
+      var buffer = evt.target.result;
+      var uint8Array = new Uint8Array(buffer);
+      PDFViewerApplication.open(uint8Array);
+    };
+    fileReader.readAsArrayBuffer(file);
+  }
+
+  PDFViewerApplication.setTitleUsingUrl(file.name);
+
+  // URL does not reflect proper document location - hiding some icons.
+  document.getElementById('viewBookmark').setAttribute('hidden', 'true');
+  document.getElementById('secondaryViewBookmark').
+    setAttribute('hidden', 'true');
+  document.getElementById('download').setAttribute('hidden', 'true');
+  document.getElementById('secondaryDownload').setAttribute('hidden', 'true');
+}, true);
+
+function selectScaleOption(value) {
+  var options = document.getElementById('scaleSelect').options;
+  var predefinedValueFound = false;
+  for (var i = 0, ii = options.length; i < ii; i++) {
+    var option = options[i];
+    if (option.value !== value) {
+      option.selected = false;
+      continue;
+    }
+    option.selected = true;
+    predefinedValueFound = true;
+  }
+  return predefinedValueFound;
+}
+
+window.addEventListener('localized', function localized(evt) {
+//  document.getElementsByTagName('html')[0].dir = mozL10n.getDirection();
+
+  PDFViewerApplication.animationStartedPromise.then(function() {
+    // Adjust the width of the zoom box to fit the content.
+    // Note: If the window is narrow enough that the zoom box is not visible,
+    //       we temporarily show it to be able to adjust its width.
+    var container = document.getElementById('scaleSelectContainer');
+    if (container.clientWidth === 0) {
+      container.setAttribute('style', 'display: inherit;');
+    }
+    if (container.clientWidth > 0) {
+      var select = document.getElementById('scaleSelect');
+      select.setAttribute('style', 'min-width: inherit;');
+      var width = select.clientWidth + SCALE_SELECT_CONTAINER_PADDING;
+      select.setAttribute('style', 'min-width: ' +
+                                   (width + SCALE_SELECT_PADDING) + 'px;');
+      container.setAttribute('style', 'min-width: ' + width + 'px; ' +
+                                      'max-width: ' + width + 'px;');
+    }
+
+    // Set the 'max-height' CSS property of the secondary toolbar.
+    SecondaryToolbar.setMaxHeight(document.getElementById('viewerContainer'));
+  });
+}, true);
+
+window.addEventListener('scalechange', function scalechange(evt) {
+  document.getElementById('zoomOut').disabled = (evt.scale === MIN_SCALE);
+  document.getElementById('zoomIn').disabled = (evt.scale === MAX_SCALE);
+
+  // Update the 'scaleSelect' DOM element.
+  var predefinedValueFound = selectScaleOption(evt.presetValue ||
+                                               '' + evt.scale);
+  if (!predefinedValueFound) {
+    var customScaleOption = document.getElementById('customScaleOption');
+    var customScale = Math.round(evt.scale * 10000) / 100;
+    customScaleOption.textContent = customScale + '%';
+    customScaleOption.selected = true;
+  }
+  if (!PDFViewerApplication.initialized) {
+    return;
+  }
+  PDFViewerApplication.pdfViewer.update();
+}, true);
+
+window.addEventListener('pagechange', function pagechange(evt) {
+  var page = evt.pageNumber;
+  if (evt.previousPageNumber !== page) {
+    document.getElementById('pageNumber').value = page;
+    if (PDFViewerApplication.sidebarOpen) {
+      PDFViewerApplication.pdfThumbnailViewer.scrollThumbnailIntoView(page);
+    }
+  }
+  var numPages = PDFViewerApplication.pagesCount;
+
+  document.getElementById('previous').disabled = (page <= 1);
+  document.getElementById('next').disabled = (page >= numPages);
+
+  document.getElementById('firstPage').disabled = (page <= 1);
+  document.getElementById('lastPage').disabled = (page >= numPages);
+
+  // we need to update stats
+  if (PDFJS.pdfBug && Stats.enabled) {
+    var pageView = PDFViewerApplication.pdfViewer.getPageView(page - 1);
+    if (pageView.stats) {
+      Stats.add(page, pageView.stats);
+    }
+  }
+}, true);
+
+function handleMouseWheel(evt) {
+  var MOUSE_WHEEL_DELTA_FACTOR = 40;
+  var ticks = (evt.type === 'DOMMouseScroll') ? -evt.detail :
+              evt.wheelDelta / MOUSE_WHEEL_DELTA_FACTOR;
+  var direction = (ticks < 0) ? 'zoomOut' : 'zoomIn';
+
+  var pdfViewer = PDFViewerApplication.pdfViewer;
+  if (pdfViewer.isInPresentationMode) {
+    evt.preventDefault();
+    PDFViewerApplication.scrollPresentationMode(ticks *
+                                                MOUSE_WHEEL_DELTA_FACTOR);
+  } else if (evt.ctrlKey || evt.metaKey) {
+    var support = PDFViewerApplication.supportedMouseWheelZoomModifierKeys;
+    if ((evt.ctrlKey && !support.ctrlKey) ||
+        (evt.metaKey && !support.metaKey)) {
+      return;
+    }
+    // Only zoom the pages, not the entire viewer.
+    evt.preventDefault();
+
+    var previousScale = pdfViewer.currentScale;
+
+    PDFViewerApplication[direction](Math.abs(ticks));
+
+    var currentScale = pdfViewer.currentScale;
+    if (previousScale !== currentScale) {
+      // After scaling the page via zoomIn/zoomOut, the position of the upper-
+      // left corner is restored. When the mouse wheel is used, the position
+      // under the cursor should be restored instead.
+      var scaleCorrectionFactor = currentScale / previousScale - 1;
+      var rect = pdfViewer.container.getBoundingClientRect();
+      var dx = evt.clientX - rect.left;
+      var dy = evt.clientY - rect.top;
+      pdfViewer.container.scrollLeft += dx * scaleCorrectionFactor;
+      pdfViewer.container.scrollTop += dy * scaleCorrectionFactor;
+    }
+  }
+}
+
+window.addEventListener('DOMMouseScroll', handleMouseWheel);
+window.addEventListener('mousewheel', handleMouseWheel);
+
+window.addEventListener('click', function click(evt) {
+  if (SecondaryToolbar.opened &&
+      PDFViewerApplication.pdfViewer.containsElement(evt.target)) {
+    SecondaryToolbar.close();
+  }
+}, false);
+
+window.addEventListener('keydown', function keydown(evt) {
+  if (OverlayManager.active) {
+    return;
+  }
+
+  var handled = false;
+  var cmd = (evt.ctrlKey ? 1 : 0) |
+            (evt.altKey ? 2 : 0) |
+            (evt.shiftKey ? 4 : 0) |
+            (evt.metaKey ? 8 : 0);
+
+  var pdfViewer = PDFViewerApplication.pdfViewer;
+  var isViewerInPresentationMode = pdfViewer && pdfViewer.isInPresentationMode;
+
+  // First, handle the key bindings that are independent whether an input
+  // control is selected or not.
+  if (cmd === 1 || cmd === 8 || cmd === 5 || cmd === 12) {
+    // either CTRL or META key with optional SHIFT.
+    switch (evt.keyCode) {
+      case 70: // f
+        if (!PDFViewerApplication.supportsIntegratedFind) {
+          PDFViewerApplication.findBar.open();
+          handled = true;
+        }
+        break;
+      case 71: // g
+        if (!PDFViewerApplication.supportsIntegratedFind) {
+          PDFViewerApplication.findBar.dispatchEvent('again',
+                                                     cmd === 5 || cmd === 12);
+          handled = true;
+        }
+        break;
+      case 61: // FF/Mac '='
+      case 107: // FF '+' and '='
+      case 187: // Chrome '+'
+      case 171: // FF with German keyboard
+        if (!isViewerInPresentationMode) {
+          PDFViewerApplication.zoomIn();
+        }
+        handled = true;
+        break;
+      case 173: // FF/Mac '-'
+      case 109: // FF '-'
+      case 189: // Chrome '-'
+        if (!isViewerInPresentationMode) {
+          PDFViewerApplication.zoomOut();
+        }
+        handled = true;
+        break;
+      case 48: // '0'
+      case 96: // '0' on Numpad of Swedish keyboard
+        if (!isViewerInPresentationMode) {
+          // keeping it unhandled (to restore page zoom to 100%)
+          setTimeout(function () {
+            // ... and resetting the scale after browser adjusts its scale
+            pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
+          });
+          handled = false;
+        }
+        break;
+    }
+  }
+
+  // CTRL or META without shift
+  if (cmd === 1 || cmd === 8) {
+    switch (evt.keyCode) {
+      case 83: // s
+        PDFViewerApplication.download();
+        handled = true;
+        break;
+    }
+  }
+
+  // CTRL+ALT or Option+Command
+  if (cmd === 3 || cmd === 10) {
+    switch (evt.keyCode) {
+      case 80: // p
+        PDFViewerApplication.requestPresentationMode();
+        handled = true;
+        break;
+      case 71: // g
+        // focuses input#pageNumber field
+        document.getElementById('pageNumber').select();
+        handled = true;
+        break;
+    }
+  }
+
+  if (handled) {
+    evt.preventDefault();
+    return;
+  }
+
+  // Some shortcuts should not get handled if a control/input element
+  // is selected.
+  var curElement = document.activeElement || document.querySelector(':focus');
+  var curElementTagName = curElement && curElement.tagName.toUpperCase();
+  if (curElementTagName === 'INPUT' ||
+      curElementTagName === 'TEXTAREA' ||
+      curElementTagName === 'SELECT') {
+    // Make sure that the secondary toolbar is closed when Escape is pressed.
+    if (evt.keyCode !== 27) { // 'Esc'
+      return;
+    }
+  }
+  var ensureViewerFocused = false;
+
+  if (cmd === 0) { // no control key pressed at all.
+    switch (evt.keyCode) {
+      case 38: // up arrow
+      case 33: // pg up
+      case 8: // backspace
+        if (!isViewerInPresentationMode &&
+            pdfViewer.currentScaleValue !== 'page-fit') {
+          break;
+        }
+        /* in presentation mode */
+        /* falls through */
+      case 37: // left arrow
+        // horizontal scrolling using arrow keys
+        if (pdfViewer.isHorizontalScrollbarEnabled) {
+          break;
+        }
+        /* falls through */
+      case 75: // 'k'
+      case 80: // 'p'
+        PDFViewerApplication.page--;
+        handled = true;
+        break;
+      case 27: // esc key
+        if (SecondaryToolbar.opened) {
+          SecondaryToolbar.close();
+          handled = true;
+        }
+        if (!PDFViewerApplication.supportsIntegratedFind &&
+            PDFViewerApplication.findBar.opened) {
+          PDFViewerApplication.findBar.close();
+          handled = true;
+        }
+        break;
+      case 40: // down arrow
+      case 34: // pg down
+      case 32: // spacebar
+        if (!isViewerInPresentationMode &&
+            pdfViewer.currentScaleValue !== 'page-fit') {
+          break;
+        }
+        /* falls through */
+      case 39: // right arrow
+        // horizontal scrolling using arrow keys
+        if (pdfViewer.isHorizontalScrollbarEnabled) {
+          break;
+        }
+        /* falls through */
+      case 74: // 'j'
+      case 78: // 'n'
+        PDFViewerApplication.page++;
+        handled = true;
+        break;
+
+      case 36: // home
+        if (isViewerInPresentationMode || PDFViewerApplication.page > 1) {
+          PDFViewerApplication.page = 1;
+          handled = true;
+          ensureViewerFocused = true;
+        }
+        break;
+      case 35: // end
+        if (isViewerInPresentationMode || (PDFViewerApplication.pdfDocument &&
+            PDFViewerApplication.page < PDFViewerApplication.pagesCount)) {
+          PDFViewerApplication.page = PDFViewerApplication.pagesCount;
+          handled = true;
+          ensureViewerFocused = true;
+        }
+        break;
+
+      case 72: // 'h'
+        if (!isViewerInPresentationMode) {
+          HandTool.toggle();
+        }
+        break;
+      case 82: // 'r'
+        PDFViewerApplication.rotatePages(90);
+        break;
+    }
+  }
+
+  if (cmd === 4) { // shift-key
+    switch (evt.keyCode) {
+      case 32: // spacebar
+        if (!isViewerInPresentationMode &&
+            pdfViewer.currentScaleValue !== 'page-fit') {
+          break;
+        }
+        PDFViewerApplication.page--;
+        handled = true;
+        break;
+
+      case 82: // 'r'
+        PDFViewerApplication.rotatePages(-90);
+        break;
+    }
+  }
+
+  if (!handled && !isViewerInPresentationMode) {
+    // 33=Page Up  34=Page Down  35=End    36=Home
+    // 37=Left     38=Up         39=Right  40=Down
+    // 32=Spacebar
+    if ((evt.keyCode >= 33 && evt.keyCode <= 40) ||
+        (evt.keyCode === 32 && curElementTagName !== 'BUTTON')) {
+      ensureViewerFocused = true;
+    }
+  }
+
+  if (cmd === 2) { // alt-key
+    switch (evt.keyCode) {
+      case 37: // left arrow
+        if (isViewerInPresentationMode) {
+          PDFViewerApplication.pdfHistory.back();
+          handled = true;
+        }
+        break;
+      case 39: // right arrow
+        if (isViewerInPresentationMode) {
+          PDFViewerApplication.pdfHistory.forward();
+          handled = true;
+        }
+        break;
+    }
+  }
+
+  if (ensureViewerFocused && !pdfViewer.containsElement(curElement)) {
+    // The page container is not focused, but a page navigation key has been
+    // pressed. Change the focus to the viewer container to make sure that
+    // navigation by keyboard works as expected.
+    pdfViewer.focus();
+  }
+
+  if (handled) {
+    evt.preventDefault();
+  }
+});
+
+window.addEventListener('beforeprint', function beforePrint(evt) {
+  PDFViewerApplication.beforePrint();
+});
+
+window.addEventListener('afterprint', function afterPrint(evt) {
+  PDFViewerApplication.afterPrint();
+});
+
+(function animationStartedClosure() {
+  // The offsetParent is not set until the pdf.js iframe or object is visible.
+  // Waiting for first animation.
+  PDFViewerApplication.animationStartedPromise = new Promise(
+      function (resolve) {
+    window.requestAnimationFrame(resolve);
+  });
+})();
+
author	Michael Lustfield <MTecknology@users.noreply.github.com>	2017-08-23 09:58:05 -0500
committer	Kim "BKC" Carlbäcker <kim.carlbacker@gmail.com>	2017-08-23 16:58:05 +0200
commit	a915a09e4f8edc7734c9374ad9f9a51b39241ee3 (patch)
tree	d2498d2cfb579cd5c1d73d750163905cfbc5fab5 /public/vendor/plugins/pdfjs/web
parent	64b706884635bcac31710d878bbb5e1b2d96ac0c (diff)
download	gitea-a915a09e4f8edc7734c9374ad9f9a51b39241ee3.tar.gz gitea-a915a09e4f8edc7734c9374ad9f9a51b39241ee3.zip