Merge pull request #8468 from owncloud/remove-infieldlabels

Remove infieldlabels

4 files changed, 459 insertions, 183 deletions

diff --git a/core/js/core.json b/core/js/core.json
index f1e0ba883d0..4815116c338 100644
--- a/core/js/core.json
+++ b/core/js/core.json
@@ -4,7 +4,6 @@
 		"jquery-migrate-1.2.1.min.js",
 		"jquery-ui-1.10.0.custom.js",
 		"jquery-showpassword.js",
-		"jquery.infieldlabel.js",
 		"jquery.placeholder.js",
 		"jquery-tipsy.js",
 		"underscore.js"
diff --git a/core/js/jquery.infieldlabel.js b/core/js/jquery.infieldlabel.js
deleted file mode 100644
index fad15102bcb..00000000000
--- a/core/js/jquery.infieldlabel.js
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * jquery.infieldlabel
- * A simple jQuery plugin for adding labels that sit over a form field and fade away when the fields are populated.
- * 
- * Copyright (c) 2009 - 2013 Doug Neiner <doug@dougneiner.com> (http://code.dougneiner.com)
- * Source: https://github.com/dcneiner/In-Field-Labels-jQuery-Plugin
- * Dual licensed MIT or GPL
- *   MIT (http://www.opensource.org/licenses/mit-license)
- *   GPL (http://www.opensource.org/licenses/gpl-license)
- *
- * @version 0.1.3
- */
-(function ($) {
-
-  $.InFieldLabels = function (label, field, options) {
-    // To avoid scope issues, use 'base' instead of 'this'
-    // to reference this class from internal events and functions.
-    var base = this;
-  
-    // Access to jQuery and DOM versions of each element
-    base.$label = $(label);
-    base.label  = label;
-
-    base.$field = $(field);
-    base.field  = field;
-
-    base.$label.data("InFieldLabels", base);
-    base.showing = true;
-
-    base.init = function () {
-      var initialSet;
-
-      // Merge supplied options with default options
-      base.options = $.extend({}, $.InFieldLabels.defaultOptions, options);
-
-      // Check if the field is already filled in 
-      // add a short delay to handle autocomplete
-      setTimeout(function() {
-        if (base.$field.val() !== "") {
-          base.$label.hide();
-          base.showing = false;
-        } else {
-          base.$label.show();
-          base.showing = true;
-        }
-      }, 200);
-
-      base.$field.focus(function () {
-        base.fadeOnFocus();
-      }).blur(function () {
-        base.checkForEmpty(true);
-      }).bind('keydown.infieldlabel', function (e) {
-        // Use of a namespace (.infieldlabel) allows us to
-        // unbind just this method later
-        base.hideOnChange(e);
-      }).bind('paste', function () {
-        // Since you can not paste an empty string we can assume
-        // that the fieldis not empty and the label can be cleared.
-        base.setOpacity(0.0);
-      }).change(function () {
-        base.checkForEmpty();
-      }).bind('onPropertyChange', function () {
-        base.checkForEmpty();
-      }).bind('keyup.infieldlabel', function () {
-        base.checkForEmpty();
-      });
-
-      if ( base.options.pollDuration > 0 ) {
-        initialSet = setInterval( function () {
-        if (base.$field.val() !== "") {
-          base.$label.hide();
-          base.showing = false;
-          clearInterval( initialSet );
-        }
-      }, base.options.pollDuration );
-
-      }
-    };
-
-    // If the label is currently showing
-    // then fade it down to the amount
-    // specified in the settings
-    base.fadeOnFocus = function () {
-      if (base.showing) {
-        base.setOpacity(base.options.fadeOpacity);
-      }
-    };
-
-    base.setOpacity = function (opacity) {
-      base.$label.stop().animate({ opacity: opacity }, base.options.fadeDuration);
-      base.showing = (opacity > 0.0);
-    };
-
-    // Checks for empty as a fail safe
-    // set blur to true when passing from
-    // the blur event
-    base.checkForEmpty = function (blur) {
-      if (base.$field.val() === "") {
-        base.prepForShow();
-        base.setOpacity(blur ? 1.0 : base.options.fadeOpacity);
-      } else {
-        base.setOpacity(0.0);
-      }
-    };
-
-    base.prepForShow = function () {
-      if (!base.showing) {
-        // Prepare for a animate in...
-        base.$label.css({opacity: 0.0}).show();
-
-        // Reattach the keydown event
-        base.$field.bind('keydown.infieldlabel', function (e) {
-          base.hideOnChange(e);
-        });
-      }
-    };
-
-    base.hideOnChange = function (e) {
-      if (
-          (e.keyCode === 16) || // Skip Shift
-          (e.keyCode === 9) // Skip Tab
-        ) {
-        return; 
-      }
-
-      if (base.showing) {
-        base.$label.hide();
-        base.showing = false;
-      }
-
-      // Remove keydown event to save on CPU processing
-      base.$field.unbind('keydown.infieldlabel');
-    };
-
-    // Run the initialization method
-    base.init();
-  };
-
-  $.InFieldLabels.defaultOptions = {
-    fadeOpacity: 0.5, // Once a field has focus, how transparent should the label be
-    fadeDuration: 300, // How long should it take to animate from 1.0 opacity to the fadeOpacity
-    pollDuration: 0, // If set to a number greater than zero, this will poll until content is detected in a field
-    enabledInputTypes: [ "text", "search", "tel", "url", "email", "password", "number", "textarea" ]
-  };
-
-
-  $.fn.inFieldLabels = function (options) {
-    var allowed_types = options && options.enabledInputTypes || $.InFieldLabels.defaultOptions.enabledInputTypes;
-
-    return this.each(function () {
-      // Find input or textarea based on for= attribute
-      // The for attribute on the label must contain the ID
-      // of the input or textarea element
-      var for_attr = $(this).attr('for'), field, restrict_type;
-      if (!for_attr) {
-        return; // Nothing to attach, since the for field wasn't used
-      }
-
-      // Find the referenced input or textarea element
-      field = document.getElementById( for_attr );
-      if ( !field ) {
-        return; // No element found
-      }
-
-      // Restrict input type
-      restrict_type = $.inArray( field.type, allowed_types );
-
-      if ( restrict_type === -1 && field.nodeName !== "TEXTAREA" ) {
-        return; // Again, nothing to attach
-      } 
-
-      // Only create object for matched input types and textarea
-      (new $.InFieldLabels(this, field, options));
-    });
-  };
-
-}(jQuery));
diff --git a/core/js/js.js b/core/js/js.js
index 1c4fb98c60c..834916b2e3f 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -1039,11 +1039,6 @@ function initCore() {
 	setShowPassword($('#pass2'), $('label[for=personal-show]'));
 	setShowPassword($('#dbpass'), $('label[for=dbpassword]'));
 
-	//use infield labels
-	$("label.infield").inFieldLabels({
-		pollDuration: 100
-	});
-
 	var checkShowCredentials = function() {
 		var empty = false;
 		$('input#user, input#password').each(function() {
diff --git a/core/js/placeholders.js b/core/js/placeholders.js
new file mode 100644
index 00000000000..e63f429d40f
--- /dev/null
+++ b/core/js/placeholders.js
@@ -0,0 +1,459 @@
+/* 
+ * The MIT License
+ *
+ * Copyright (c) 2012 James Allardice
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), 
+ * to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// Defines the global Placeholders object along with various utility methods
+(function (global) {
+
+    "use strict";
+
+    // Cross-browser DOM event binding
+    function addEventListener(elem, event, fn) {
+        if (elem.addEventListener) {
+            return elem.addEventListener(event, fn, false);
+        }
+        if (elem.attachEvent) {
+            return elem.attachEvent("on" + event, fn);
+        }
+    }
+
+    // Check whether an item is in an array (we don't use Array.prototype.indexOf so we don't clobber any existing polyfills - this is a really simple alternative)
+    function inArray(arr, item) {
+        var i, len;
+        for (i = 0, len = arr.length; i < len; i++) {
+            if (arr[i] === item) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    // Move the caret to the index position specified. Assumes that the element has focus
+    function moveCaret(elem, index) {
+        var range;
+        if (elem.createTextRange) {
+            range = elem.createTextRange();
+            range.move("character", index);
+            range.select();
+        } else if (elem.selectionStart) {
+            elem.focus();
+            elem.setSelectionRange(index, index);
+        }
+    }
+
+    // Attempt to change the type property of an input element
+    function changeType(elem, type) {
+        try {
+            elem.type = type;
+            return true;
+        } catch (e) {
+            // You can't change input type in IE8 and below
+            return false;
+        }
+    }
+
+    // Expose public methods
+    global.Placeholders = {
+        Utils: {
+            addEventListener: addEventListener,
+            inArray: inArray,
+            moveCaret: moveCaret,
+            changeType: changeType
+        }
+    };
+
+}(this));
+
+(function (global) {
+
+    "use strict";
+
+    var validTypes = [
+            "text",
+            "search",
+            "url",
+            "tel",
+            "email",
+            "password",
+            "number",
+            "textarea"
+        ],
+
+        // The list of keycodes that are not allowed when the polyfill is configured to hide-on-input
+        badKeys = [
+
+            // The following keys all cause the caret to jump to the end of the input value
+            27, // Escape
+            33, // Page up
+            34, // Page down
+            35, // End
+            36, // Home
+
+            // Arrow keys allow you to move the caret manually, which should be prevented when the placeholder is visible
+            37, // Left
+            38, // Up
+            39, // Right
+            40, // Down
+
+            // The following keys allow you to modify the placeholder text by removing characters, which should be prevented when the placeholder is visible
+            8, // Backspace
+            46 // Delete
+        ],
+
+        // Styling variables
+        placeholderStyleColor = "#ccc",
+        placeholderClassName = "placeholdersjs",
+        classNameRegExp = new RegExp("(?:^|\\s)" + placeholderClassName + "(?!\\S)"),
+
+        // These will hold references to all elements that can be affected. NodeList objects are live, so we only need to get those references once
+        inputs, textareas,
+
+        // The various data-* attributes used by the polyfill
+        ATTR_CURRENT_VAL = "data-placeholder-value",
+        ATTR_ACTIVE = "data-placeholder-active",
+        ATTR_INPUT_TYPE = "data-placeholder-type",
+        ATTR_FORM_HANDLED = "data-placeholder-submit",
+        ATTR_EVENTS_BOUND = "data-placeholder-bound",
+        ATTR_OPTION_FOCUS = "data-placeholder-focus",
+        ATTR_OPTION_LIVE = "data-placeholder-live",
+        ATTR_MAXLENGTH = "data-placeholder-maxlength",
+
+        // Various other variables used throughout the rest of the script
+        test = document.createElement("input"),
+        head = document.getElementsByTagName("head")[0],
+        root = document.documentElement,
+        Placeholders = global.Placeholders,
+        Utils = Placeholders.Utils,
+        hideOnInput, liveUpdates, keydownVal, styleElem, styleRules, placeholder, timer, form, elem, len, i;
+
+    // No-op (used in place of public methods when native support is detected)
+    function noop() {}
+
+    // Avoid IE9 activeElement of death when an iframe is used.
+    // More info:
+    // http://bugs.jquery.com/ticket/13393
+    // https://github.com/jquery/jquery/commit/85fc5878b3c6af73f42d61eedf73013e7faae408
+    function safeActiveElement() {
+        try {
+            return document.activeElement;
+        } catch (err) {}
+    }
+
+    // Hide the placeholder value on a single element. Returns true if the placeholder was hidden and false if it was not (because it wasn't visible in the first place)
+    function hidePlaceholder(elem, keydownValue) {
+        var type,
+            maxLength,
+            valueChanged = (!!keydownValue && elem.value !== keydownValue),
+            isPlaceholderValue = (elem.value === elem.getAttribute(ATTR_CURRENT_VAL));
+
+        if ((valueChanged || isPlaceholderValue) && elem.getAttribute(ATTR_ACTIVE) === "true") {
+            elem.removeAttribute(ATTR_ACTIVE);
+            elem.value = elem.value.replace(elem.getAttribute(ATTR_CURRENT_VAL), "");
+            elem.className = elem.className.replace(classNameRegExp, "");
+
+            // Restore the maxlength value
+            maxLength = elem.getAttribute(ATTR_MAXLENGTH);
+            if (parseInt(maxLength, 10) >= 0) { // Old FF returns -1 if attribute not set (see GH-56)
+                elem.setAttribute("maxLength", maxLength);
+                elem.removeAttribute(ATTR_MAXLENGTH);
+            }
+
+            // If the polyfill has changed the type of the element we need to change it back
+            type = elem.getAttribute(ATTR_INPUT_TYPE);
+            if (type) {
+                elem.type = type;
+            }
+            return true;
+        }
+        return false;
+    }
+
+    // Show the placeholder value on a single element. Returns true if the placeholder was shown and false if it was not (because it was already visible)
+    function showPlaceholder(elem) {
+        var type,
+            maxLength,
+            val = elem.getAttribute(ATTR_CURRENT_VAL);
+        if (elem.value === "" && val) {
+            elem.setAttribute(ATTR_ACTIVE, "true");
+            elem.value = val;
+            elem.className += " " + placeholderClassName;
+
+            // Store and remove the maxlength value
+            maxLength = elem.getAttribute(ATTR_MAXLENGTH);
+            if (!maxLength) {
+                elem.setAttribute(ATTR_MAXLENGTH, elem.maxLength);
+                elem.removeAttribute("maxLength");
+            }
+
+            // If the type of element needs to change, change it (e.g. password inputs)
+            type = elem.getAttribute(ATTR_INPUT_TYPE);
+            if (type) {
+                elem.type = "text";
+            } else if (elem.type === "password") {
+                if (Utils.changeType(elem, "text")) {
+                    elem.setAttribute(ATTR_INPUT_TYPE, "password");
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+
+    function handleElem(node, callback) {
+
+        var handleInputsLength, handleTextareasLength, handleInputs, handleTextareas, elem, len, i;
+
+        // Check if the passed in node is an input/textarea (in which case it can't have any affected descendants)
+        if (node && node.getAttribute(ATTR_CURRENT_VAL)) {
+            callback(node);
+        } else {
+
+            // If an element was passed in, get all affected descendants. Otherwise, get all affected elements in document
+            handleInputs = node ? node.getElementsByTagName("input") : inputs;
+            handleTextareas = node ? node.getElementsByTagName("textarea") : textareas;
+
+            handleInputsLength = handleInputs ? handleInputs.length : 0;
+            handleTextareasLength = handleTextareas ? handleTextareas.length : 0;
+
+            // Run the callback for each element
+            for (i = 0, len = handleInputsLength + handleTextareasLength; i < len; i++) {
+                elem = i < handleInputsLength ? handleInputs[i] : handleTextareas[i - handleInputsLength];
+                callback(elem);
+            }
+        }
+    }
+
+    // Return all affected elements to their normal state (remove placeholder value if present)
+    function disablePlaceholders(node) {
+        handleElem(node, hidePlaceholder);
+    }
+
+    // Show the placeholder value on all appropriate elements
+    function enablePlaceholders(node) {
+        handleElem(node, showPlaceholder);
+    }
+
+    // Returns a function that is used as a focus event handler
+    function makeFocusHandler(elem) {
+        return function () {
+
+            // Only hide the placeholder value if the (default) hide-on-focus behaviour is enabled
+            if (hideOnInput && elem.value === elem.getAttribute(ATTR_CURRENT_VAL) && elem.getAttribute(ATTR_ACTIVE) === "true") {
+
+                // Move the caret to the start of the input (this mimics the behaviour of all browsers that do not hide the placeholder on focus)
+                Utils.moveCaret(elem, 0);
+
+            } else {
+
+                // Remove the placeholder
+                hidePlaceholder(elem);
+            }
+        };
+    }
+
+    // Returns a function that is used as a blur event handler
+    function makeBlurHandler(elem) {
+        return function () {
+            showPlaceholder(elem);
+        };
+    }
+
+    // Functions that are used as a event handlers when the hide-on-input behaviour has been activated - very basic implementation of the "input" event
+    function makeKeydownHandler(elem) {
+        return function (e) {
+            keydownVal = elem.value;
+
+            //Prevent the use of the arrow keys (try to keep the cursor before the placeholder)
+            if (elem.getAttribute(ATTR_ACTIVE) === "true") {
+                if (keydownVal === elem.getAttribute(ATTR_CURRENT_VAL) && Utils.inArray(badKeys, e.keyCode)) {
+                    if (e.preventDefault) {
+                        e.preventDefault();
+                    }
+                    return false;
+                }
+            }
+        };
+    }
+    function makeKeyupHandler(elem) {
+        return function () {
+            hidePlaceholder(elem, keydownVal);
+
+            // If the element is now empty we need to show the placeholder
+            if (elem.value === "") {
+                elem.blur();
+                Utils.moveCaret(elem, 0);
+            }
+        };
+    }
+    function makeClickHandler(elem) {
+        return function () {
+            if (elem === safeActiveElement() && elem.value === elem.getAttribute(ATTR_CURRENT_VAL) && elem.getAttribute(ATTR_ACTIVE) === "true") {
+                Utils.moveCaret(elem, 0);
+            }
+        };
+    }
+
+    // Returns a function that is used as a submit event handler on form elements that have children affected by this polyfill
+    function makeSubmitHandler(form) {
+        return function () {
+
+            // Turn off placeholders on all appropriate descendant elements
+            disablePlaceholders(form);
+        };
+    }
+
+    // Bind event handlers to an element that we need to affect with the polyfill
+    function newElement(elem) {
+
+        // If the element is part of a form, make sure the placeholder string is not submitted as a value
+        if (elem.form) {
+            form = elem.form;
+
+            // If the type of the property is a string then we have a "form" attribute and need to get the real form
+            if (typeof form === "string") {
+                form = document.getElementById(form);
+            }
+
+            // Set a flag on the form so we know it's been handled (forms can contain multiple inputs)
+            if (!form.getAttribute(ATTR_FORM_HANDLED)) {
+                Utils.addEventListener(form, "submit", makeSubmitHandler(form));
+                form.setAttribute(ATTR_FORM_HANDLED, "true");
+            }
+        }
+
+        // Bind event handlers to the element so we can hide/show the placeholder as appropriate
+        Utils.addEventListener(elem, "focus", makeFocusHandler(elem));
+        Utils.addEventListener(elem, "blur", makeBlurHandler(elem));
+
+        // If the placeholder should hide on input rather than on focus we need additional event handlers
+        if (hideOnInput) {
+            Utils.addEventListener(elem, "keydown", makeKeydownHandler(elem));
+            Utils.addEventListener(elem, "keyup", makeKeyupHandler(elem));
+            Utils.addEventListener(elem, "click", makeClickHandler(elem));
+        }
+
+        // Remember that we've bound event handlers to this element
+        elem.setAttribute(ATTR_EVENTS_BOUND, "true");
+        elem.setAttribute(ATTR_CURRENT_VAL, placeholder);
+
+        // If the element doesn't have a value and is not focussed, set it to the placeholder string
+        if (hideOnInput || elem !== safeActiveElement()) {
+            showPlaceholder(elem);
+        }
+    }
+
+    Placeholders.nativeSupport = test.placeholder !== void 0;
+
+    if (!Placeholders.nativeSupport) {
+
+        // Get references to all the input and textarea elements currently in the DOM (live NodeList objects to we only need to do this once)
+        inputs = document.getElementsByTagName("input");
+        textareas = document.getElementsByTagName("textarea");
+
+        // Get any settings declared as data-* attributes on the root element (currently the only options are whether to hide the placeholder on focus or input and whether to auto-update)
+        hideOnInput = root.getAttribute(ATTR_OPTION_FOCUS) === "false";
+        liveUpdates = root.getAttribute(ATTR_OPTION_LIVE) !== "false";
+
+        // Create style element for placeholder styles (instead of directly setting style properties on elements - allows for better flexibility alongside user-defined styles)
+        styleElem = document.createElement("style");
+        styleElem.type = "text/css";
+
+        // Create style rules as text node
+        styleRules = document.createTextNode("." + placeholderClassName + " { color:" + placeholderStyleColor + "; }");
+
+        // Append style rules to newly created stylesheet
+        if (styleElem.styleSheet) {
+            styleElem.styleSheet.cssText = styleRules.nodeValue;
+        } else {
+            styleElem.appendChild(styleRules);
+        }
+
+        // Prepend new style element to the head (before any existing stylesheets, so user-defined rules take precedence)
+        head.insertBefore(styleElem, head.firstChild);
+
+        // Set up the placeholders
+        for (i = 0, len = inputs.length + textareas.length; i < len; i++) {
+            elem = i < inputs.length ? inputs[i] : textareas[i - inputs.length];
+
+            // Get the value of the placeholder attribute, if any. IE10 emulating IE7 fails with getAttribute, hence the use of the attributes node
+            placeholder = elem.attributes.placeholder;
+            if (placeholder) {
+
+                // IE returns an empty object instead of undefined if the attribute is not present
+                placeholder = placeholder.nodeValue;
+
+                // Only apply the polyfill if this element is of a type that supports placeholders, and has a placeholder attribute with a non-empty value
+                if (placeholder && Utils.inArray(validTypes, elem.type)) {
+                    newElement(elem);
+                }
+            }
+        }
+
+        // If enabled, the polyfill will repeatedly check for changed/added elements and apply to those as well
+        timer = setInterval(function () {
+            for (i = 0, len = inputs.length + textareas.length; i < len; i++) {
+                elem = i < inputs.length ? inputs[i] : textareas[i - inputs.length];
+
+                // Only apply the polyfill if this element is of a type that supports placeholders, and has a placeholder attribute with a non-empty value
+                placeholder = elem.attributes.placeholder;
+                if (placeholder) {
+                    placeholder = placeholder.nodeValue;
+                    if (placeholder && Utils.inArray(validTypes, elem.type)) {
+
+                        // If the element hasn't had event handlers bound to it then add them
+                        if (!elem.getAttribute(ATTR_EVENTS_BOUND)) {
+                            newElement(elem);
+                        }
+
+                        // If the placeholder value has changed or not been initialised yet we need to update the display
+                        if (placeholder !== elem.getAttribute(ATTR_CURRENT_VAL) || (elem.type === "password" && !elem.getAttribute(ATTR_INPUT_TYPE))) {
+
+                            // Attempt to change the type of password inputs (fails in IE < 9)
+                            if (elem.type === "password" && !elem.getAttribute(ATTR_INPUT_TYPE) && Utils.changeType(elem, "text")) {
+                                elem.setAttribute(ATTR_INPUT_TYPE, "password");
+                            }
+
+                            // If the placeholder value has changed and the placeholder is currently on display we need to change it
+                            if (elem.value === elem.getAttribute(ATTR_CURRENT_VAL)) {
+                                elem.value = placeholder;
+                            }
+
+                            // Keep a reference to the current placeholder value in case it changes via another script
+                            elem.setAttribute(ATTR_CURRENT_VAL, placeholder);
+                        }
+                    }
+                } else if (elem.getAttribute(ATTR_ACTIVE)) {
+                    hidePlaceholder(elem);
+                    elem.removeAttribute(ATTR_CURRENT_VAL);
+                }
+            }
+
+            // If live updates are not enabled cancel the timer
+            if (!liveUpdates) {
+                clearInterval(timer);
+            }
+        }, 100);
+    }
+
+    Utils.addEventListener(global, "beforeunload", function () {
+        Placeholders.disable();
+    });
+
+    // Expose public methods
+    Placeholders.disable = Placeholders.nativeSupport ? noop : disablePlaceholders;
+    Placeholders.enable = Placeholders.nativeSupport ? noop : enablePlaceholders;
+
+}(this));