diff options
| author | Olivier Lamy <olamy@apache.org> | 2012-10-16 11:54:50 +0000 |
|---|---|---|
| committer | Olivier Lamy <olamy@apache.org> | 2012-10-16 11:54:50 +0000 |
| commit | 18c832b1c49466f0e965f0869bd35c5bbfe3c9a5 (patch) | |
| tree | fbb1f2d8fa82a1390fa0a6a69fbe038835010f22 | |
| parent | 84fee3c0d8bc32527637e82bab0185181c3795a1 (diff) | |
| download | archiva-18c832b1c49466f0e965f0869bd35c5bbfe3c9a5.tar.gz archiva-18c832b1c49466f0e965f0869bd35c5bbfe3c9a5.zip | |
delete knockout 2.0.0
git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1398753 13f79535-47bb-0310-9956-ffa450edef68
| -rw-r--r-- | archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js | 3223 |
1 files changed, 0 insertions, 3223 deletions
diff --git a/archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js b/archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js deleted file mode 100644 index 56ce31566..000000000 --- a/archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js +++ /dev/null @@ -1,3223 +0,0 @@ -// Knockout JavaScript library v2.0.0
-// (c) Steven Sanderson - http://knockoutjs.com/
-// License: MIT (http://www.opensource.org/licenses/mit-license.php)
-
-(function(window,undefined){
-var ko = window["ko"] = {};
-// Google Closure Compiler helpers (used only to make the minified file smaller)
-ko.exportSymbol = function(publicPath, object) {
- var tokens = publicPath.split(".");
- var target = window;
- for (var i = 0; i < tokens.length - 1; i++)
- target = target[tokens[i]];
- target[tokens[tokens.length - 1]] = object;
-};
-ko.exportProperty = function(owner, publicName, object) {
- owner[publicName] = object;
-};
-ko.utils = new (function () {
- var stringTrimRegex = /^(\s|\u00A0)+|(\s|\u00A0)+$/g;
-
- // Represent the known event types in a compact way, then at runtime transform it into a hash with event name as key (for fast lookup)
- var knownEvents = {}, knownEventTypesByEventName = {};
- var keyEventTypeName = /Firefox\/2/i.test(navigator.userAgent) ? 'KeyboardEvent' : 'UIEvents';
- knownEvents[keyEventTypeName] = ['keyup', 'keydown', 'keypress'];
- knownEvents['MouseEvents'] = ['click', 'dblclick', 'mousedown', 'mouseup', 'mousemove', 'mouseover', 'mouseout', 'mouseenter', 'mouseleave'];
- for (var eventType in knownEvents) {
- var knownEventsForType = knownEvents[eventType];
- if (knownEventsForType.length) {
- for (var i = 0, j = knownEventsForType.length; i < j; i++)
- knownEventTypesByEventName[knownEventsForType[i]] = eventType;
- }
- }
-
- // Detect IE versions for bug workarounds (uses IE conditionals, not UA string, for robustness)
- var ieVersion = (function() {
- var version = 3, div = document.createElement('div'), iElems = div.getElementsByTagName('i');
-
- // Keep constructing conditional HTML blocks until we hit one that resolves to an empty fragment
- while (
- div.innerHTML = '<!--[if gt IE ' + (++version) + ']><i></i><![endif]-->',
- iElems[0]
- );
- return version > 4 ? version : undefined;
- }());
- var isIe6 = ieVersion === 6,
- isIe7 = ieVersion === 7;
-
- function isClickOnCheckableElement(element, eventType) {
- if ((element.tagName != "INPUT") || !element.type) return false;
- if (eventType.toLowerCase() != "click") return false;
- var inputType = element.type.toLowerCase();
- return (inputType == "checkbox") || (inputType == "radio");
- }
-
- return {
- fieldsIncludedWithJsonPost: ['authenticity_token', /^__RequestVerificationToken(_.*)?$/],
-
- arrayForEach: function (array, action) {
- for (var i = 0, j = array.length; i < j; i++)
- action(array[i]);
- },
-
- arrayIndexOf: function (array, item) {
- if (typeof Array.prototype.indexOf == "function")
- return Array.prototype.indexOf.call(array, item);
- for (var i = 0, j = array.length; i < j; i++)
- if (array[i] === item)
- return i;
- return -1;
- },
-
- arrayFirst: function (array, predicate, predicateOwner) {
- for (var i = 0, j = array.length; i < j; i++)
- if (predicate.call(predicateOwner, array[i]))
- return array[i];
- return null;
- },
-
- arrayRemoveItem: function (array, itemToRemove) {
- var index = ko.utils.arrayIndexOf(array, itemToRemove);
- if (index >= 0)
- array.splice(index, 1);
- },
-
- arrayGetDistinctValues: function (array) {
- array = array || [];
- var result = [];
- for (var i = 0, j = array.length; i < j; i++) {
- if (ko.utils.arrayIndexOf(result, array[i]) < 0)
- result.push(array[i]);
- }
- return result;
- },
-
- arrayMap: function (array, mapping) {
- array = array || [];
- var result = [];
- for (var i = 0, j = array.length; i < j; i++)
- result.push(mapping(array[i]));
- return result;
- },
-
- arrayFilter: function (array, predicate) {
- array = array || [];
- var result = [];
- for (var i = 0, j = array.length; i < j; i++)
- if (predicate(array[i]))
- result.push(array[i]);
- return result;
- },
-
- arrayPushAll: function (array, valuesToPush) {
- for (var i = 0, j = valuesToPush.length; i < j; i++)
- array.push(valuesToPush[i]);
- return array;
- },
-
- extend: function (target, source) {
- for(var prop in source) {
- if(source.hasOwnProperty(prop)) {
- target[prop] = source[prop];
- }
- }
- return target;
- },
-
- emptyDomNode: function (domNode) {
- while (domNode.firstChild) {
- ko.removeNode(domNode.firstChild);
- }
- },
-
- setDomNodeChildren: function (domNode, childNodes) {
- ko.utils.emptyDomNode(domNode);
- if (childNodes) {
- ko.utils.arrayForEach(childNodes, function (childNode) {
- domNode.appendChild(childNode);
- });
- }
- },
-
- replaceDomNodes: function (nodeToReplaceOrNodeArray, newNodesArray) {
- var nodesToReplaceArray = nodeToReplaceOrNodeArray.nodeType ? [nodeToReplaceOrNodeArray] : nodeToReplaceOrNodeArray;
- if (nodesToReplaceArray.length > 0) {
- var insertionPoint = nodesToReplaceArray[0];
- var parent = insertionPoint.parentNode;
- for (var i = 0, j = newNodesArray.length; i < j; i++)
- parent.insertBefore(newNodesArray[i], insertionPoint);
- for (var i = 0, j = nodesToReplaceArray.length; i < j; i++) {
- ko.removeNode(nodesToReplaceArray[i]);
- }
- }
- },
-
- setOptionNodeSelectionState: function (optionNode, isSelected) {
- // IE6 sometimes throws "unknown error" if you try to write to .selected directly, whereas Firefox struggles with setAttribute. Pick one based on browser.
- if (navigator.userAgent.indexOf("MSIE 6") >= 0)
- optionNode.setAttribute("selected", isSelected);
- else
- optionNode.selected = isSelected;
- },
-
- stringTrim: function (string) {
- return (string || "").replace(stringTrimRegex, "");
- },
-
- stringTokenize: function (string, delimiter) {
- var result = [];
- var tokens = (string || "").split(delimiter);
- for (var i = 0, j = tokens.length; i < j; i++) {
- var trimmed = ko.utils.stringTrim(tokens[i]);
- if (trimmed !== "")
- result.push(trimmed);
- }
- return result;
- },
-
- stringStartsWith: function (string, startsWith) {
- string = string || "";
- if (startsWith.length > string.length)
- return false;
- return string.substring(0, startsWith.length) === startsWith;
- },
-
- evalWithinScope: function (expression /*, scope1, scope2, scope3... */) {
- // Build the source for a function that evaluates "expression"
- // For each scope variable, add an extra level of "with" nesting
- // Example result: with(sc[1]) { with(sc[0]) { return (expression) } }
- var scopes = Array.prototype.slice.call(arguments, 1);
- var functionBody = "return (" + expression + ")";
- for (var i = 0; i < scopes.length; i++) {
- if (scopes[i] && typeof scopes[i] == "object")
- functionBody = "with(sc[" + i + "]) { " + functionBody + " } ";
- }
- return (new Function("sc", functionBody))(scopes);
- },
-
- domNodeIsContainedBy: function (node, containedByNode) {
- if (containedByNode.compareDocumentPosition)
- return (containedByNode.compareDocumentPosition(node) & 16) == 16;
- while (node != null) {
- if (node == containedByNode)
- return true;
- node = node.parentNode;
- }
- return false;
- },
-
- domNodeIsAttachedToDocument: function (node) {
- return ko.utils.domNodeIsContainedBy(node, document);
- },
-
- registerEventHandler: function (element, eventType, handler) {
- if (typeof jQuery != "undefined") {
- if (isClickOnCheckableElement(element, eventType)) {
- // For click events on checkboxes, jQuery interferes with the event handling in an awkward way:
- // it toggles the element checked state *after* the click event handlers run, whereas native
- // click events toggle the checked state *before* the event handler.
- // Fix this by intecepting the handler and applying the correct checkedness before it runs.
- var originalHandler = handler;
- handler = function(event, eventData) {
- var jQuerySuppliedCheckedState = this.checked;
- if (eventData)
- this.checked = eventData.checkedStateBeforeEvent !== true;
- originalHandler.call(this, event);
- this.checked = jQuerySuppliedCheckedState; // Restore the state jQuery applied
- };
- }
- jQuery(element)['bind'](eventType, handler);
- } else if (typeof element.addEventListener == "function")
- element.addEventListener(eventType, handler, false);
- else if (typeof element.attachEvent != "undefined")
- element.attachEvent("on" + eventType, function (event) {
- handler.call(element, event);
- });
- else
- throw new Error("Browser doesn't support addEventListener or attachEvent");
- },
-
- triggerEvent: function (element, eventType) {
- if (!(element && element.nodeType))
- throw new Error("element must be a DOM node when calling triggerEvent");
-
- if (typeof jQuery != "undefined") {
- var eventData = [];
- if (isClickOnCheckableElement(element, eventType)) {
- // Work around the jQuery "click events on checkboxes" issue described above by storing the original checked state before triggering the handler
- eventData.push({ checkedStateBeforeEvent: element.checked });
- }
- jQuery(element)['trigger'](eventType, eventData);
- } else if (typeof document.createEvent == "function") {
- if (typeof element.dispatchEvent == "function") {
- var eventCategory = knownEventTypesByEventName[eventType] || "HTMLEvents";
- var event = document.createEvent(eventCategory);
- event.initEvent(eventType, true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, element);
- element.dispatchEvent(event);
- }
- else
- throw new Error("The supplied element doesn't support dispatchEvent");
- } else if (typeof element.fireEvent != "undefined") {
- // Unlike other browsers, IE doesn't change the checked state of checkboxes/radiobuttons when you trigger their "click" event
- // so to make it consistent, we'll do it manually here
- if (eventType == "click") {
- if ((element.tagName == "INPUT") && ((element.type.toLowerCase() == "checkbox") || (element.type.toLowerCase() == "radio")))
- element.checked = element.checked !== true;
- }
- element.fireEvent("on" + eventType);
- }
- else
- throw new Error("Browser doesn't support triggering events");
- },
-
- unwrapObservable: function (value) {
- return ko.isObservable(value) ? value() : value;
- },
-
- domNodeHasCssClass: function (node, className) {
- var currentClassNames = (node.className || "").split(/\s+/);
- return ko.utils.arrayIndexOf(currentClassNames, className) >= 0;
- },
-
- toggleDomNodeCssClass: function (node, className, shouldHaveClass) {
- var hasClass = ko.utils.domNodeHasCssClass(node, className);
- if (shouldHaveClass && !hasClass) {
- node.className = (node.className || "") + " " + className;
- } else if (hasClass && !shouldHaveClass) {
- var currentClassNames = (node.className || "").split(/\s+/);
- var newClassName = "";
- for (var i = 0; i < currentClassNames.length; i++)
- if (currentClassNames[i] != className)
- newClassName += currentClassNames[i] + " ";
- node.className = ko.utils.stringTrim(newClassName);
- }
- },
-
- outerHTML: function(node) {
- // For Chrome on non-text nodes
- // (Although IE supports outerHTML, the way it formats HTML is inconsistent - sometimes closing </li> tags are omitted, sometimes not. That caused https://github.com/SteveSanderson/knockout/issues/212.)
- if (ieVersion === undefined) {
- var nativeOuterHtml = node.outerHTML;
- if (typeof nativeOuterHtml == "string")
- return nativeOuterHtml;
- }
-
- // Other browsers
- var dummyContainer = window.document.createElement("div");
- dummyContainer.appendChild(node.cloneNode(true));
- return dummyContainer.innerHTML;
- },
-
- setTextContent: function(element, textContent) {
- var value = ko.utils.unwrapObservable(textContent);
- if ((value === null) || (value === undefined))
- value = "";
-
- 'innerText' in element ? element.innerText = value
- : element.textContent = value;
-
- if (ieVersion >= 9) {
- // Believe it or not, this actually fixes an IE9 rendering bug. Insane. https://github.com/SteveSanderson/knockout/issues/209
- element.innerHTML = element.innerHTML;
- }
- },
-
- range: function (min, max) {
- min = ko.utils.unwrapObservable(min);
- max = ko.utils.unwrapObservable(max);
- var result = [];
- for (var i = min; i <= max; i++)
- result.push(i);
- return result;
- },
-
- makeArray: function(arrayLikeObject) {
- var result = [];
- for (var i = 0, j = arrayLikeObject.length; i < j; i++) {
- result.push(arrayLikeObject[i]);
- };
- return result;
- },
-
- isIe6 : isIe6,
- isIe7 : isIe7,
-
- getFormFields: function(form, fieldName) {
- var fields = ko.utils.makeArray(form.getElementsByTagName("INPUT")).concat(ko.utils.makeArray(form.getElementsByTagName("TEXTAREA")));
- var isMatchingField = (typeof fieldName == 'string')
- ? function(field) { return field.name === fieldName }
- : function(field) { return fieldName.test(field.name) }; // Treat fieldName as regex or object containing predicate
- var matches = [];
- for (var i = fields.length - 1; i >= 0; i--) {
- if (isMatchingField(fields[i]))
- matches.push(fields[i]);
- };
- return matches;
- },
-
- parseJson: function (jsonString) {
- if (typeof jsonString == "string") {
- jsonString = ko.utils.stringTrim(jsonString);
- if (jsonString) {
- if (window.JSON && window.JSON.parse) // Use native parsing where available
- return window.JSON.parse(jsonString);
- return (new Function("return " + jsonString))(); // Fallback on less safe parsing for older browsers
- }
- }
- return null;
- },
-
- stringifyJson: function (data) {
- if ((typeof JSON == "undefined") || (typeof JSON.stringify == "undefined"))
- throw new Error("Cannot find JSON.stringify(). Some browsers (e.g., IE < 8) don't support it natively, but you can overcome this by adding a script reference to json2.js, downloadable from http://www.json.org/json2.js");
- return JSON.stringify(ko.utils.unwrapObservable(data));
- },
-
- postJson: function (urlOrForm, data, options) {
- options = options || {};
- var params = options['params'] || {};
- var includeFields = options['includeFields'] || this.fieldsIncludedWithJsonPost;
- var url = urlOrForm;
-
- // If we were given a form, use its 'action' URL and pick out any requested field values
- if((typeof urlOrForm == 'object') && (urlOrForm.tagName == "FORM")) {
- var originalForm = urlOrForm;
- url = originalForm.action;
- for (var i = includeFields.length - 1; i >= 0; i--) {
- var fields = ko.utils.getFormFields(originalForm, includeFields[i]);
- for (var j = fields.length - 1; j >= 0; j--)
- params[fields[j].name] = fields[j].value;
- }
- }
-
- data = ko.utils.unwrapObservable(data);
- var form = document.createElement("FORM");
- form.style.display = "none";
- form.action = url;
- form.method = "post";
- for (var key in data) {
- var input = document.createElement("INPUT");
- input.name = key;
- input.value = ko.utils.stringifyJson(ko.utils.unwrapObservable(data[key]));
- form.appendChild(input);
- }
- for (var key in params) {
- var input = document.createElement("INPUT");
- input.name = key;
- input.value = params[key];
- form.appendChild(input);
- }
- document.body.appendChild(form);
- options['submitter'] ? options['submitter'](form) : form.submit();
- setTimeout(function () { form.parentNode.removeChild(form); }, 0);
- }
- }
-})();
-
-ko.exportSymbol('ko.utils', ko.utils);
-ko.utils.arrayForEach([
- ['arrayForEach', ko.utils.arrayForEach],
- ['arrayFirst', ko.utils.arrayFirst],
- ['arrayFilter', ko.utils.arrayFilter],
- ['arrayGetDistinctValues', ko.utils.arrayGetDistinctValues],
- ['arrayIndexOf', ko.utils.arrayIndexOf],
- ['arrayMap', ko.utils.arrayMap],
- ['arrayPushAll', ko.utils.arrayPushAll],
- ['arrayRemoveItem', ko.utils.arrayRemoveItem],
- ['extend', ko.utils.extend],
- ['fieldsIncludedWithJsonPost', ko.utils.fieldsIncludedWithJsonPost],
- ['getFormFields', ko.utils.getFormFields],
- ['postJson', ko.utils.postJson],
- ['parseJson', ko.utils.parseJson],
- ['registerEventHandler', ko.utils.registerEventHandler],
- ['stringifyJson', ko.utils.stringifyJson],
- ['range', ko.utils.range],
- ['toggleDomNodeCssClass', ko.utils.toggleDomNodeCssClass],
- ['triggerEvent', ko.utils.triggerEvent],
- ['unwrapObservable', ko.utils.unwrapObservable]
-], function(item) {
- ko.exportSymbol('ko.utils.' + item[0], item[1]);
-});
-
-if (!Function.prototype['bind']) {
- // Function.prototype.bind is a standard part of ECMAScript 5th Edition (December 2009, http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf)
- // In case the browser doesn't implement it natively, provide a JavaScript implementation. This implementation is based on the one in prototype.js
- Function.prototype['bind'] = function (object) {
- var originalFunction = this, args = Array.prototype.slice.call(arguments), object = args.shift();
- return function () {
- return originalFunction.apply(object, args.concat(Array.prototype.slice.call(arguments)));
- };
- };
-}
-ko.utils.domData = new (function () {
- var uniqueId = 0;
- var dataStoreKeyExpandoPropertyName = "__ko__" + (new Date).getTime();
- var dataStore = {};
- return {
- get: function (node, key) {
- var allDataForNode = ko.utils.domData.getAll(node, false);
- return allDataForNode === undefined ? undefined : allDataForNode[key];
- },
- set: function (node, key, value) {
- if (value === undefined) {
- // Make sure we don't actually create a new domData key if we are actually deleting a value
- if (ko.utils.domData.getAll(node, false) === undefined)
- return;
- }
- var allDataForNode = ko.utils.domData.getAll(node, true);
- allDataForNode[key] = value;
- },
- getAll: function (node, createIfNotFound) {
- var dataStoreKey = node[dataStoreKeyExpandoPropertyName];
- var hasExistingDataStore = dataStoreKey && (dataStoreKey !== "null");
- if (!hasExistingDataStore) {
- if (!createIfNotFound)
- return undefined;
- dataStoreKey = node[dataStoreKeyExpandoPropertyName] = "ko" + uniqueId++;
- dataStore[dataStoreKey] = {};
- }
- return dataStore[dataStoreKey];
- },
- clear: function (node) {
- var dataStoreKey = node[dataStoreKeyExpandoPropertyName];
- if (dataStoreKey) {
- delete dataStore[dataStoreKey];
- node[dataStoreKeyExpandoPropertyName] = null;
- }
- }
- }
-})();
-
-ko.exportSymbol('ko.utils.domData', ko.utils.domData);
-ko.exportSymbol('ko.utils.domData.clear', ko.utils.domData.clear); // Exporting only so specs can clear up after themselves fully
-ko.utils.domNodeDisposal = new (function () {
- var domDataKey = "__ko_domNodeDisposal__" + (new Date).getTime();
-
- function getDisposeCallbacksCollection(node, createIfNotFound) {
- var allDisposeCallbacks = ko.utils.domData.get(node, domDataKey);
- if ((allDisposeCallbacks === undefined) && createIfNotFound) {
- allDisposeCallbacks = [];
- ko.utils.domData.set(node, domDataKey, allDisposeCallbacks);
- }
- return allDisposeCallbacks;
- }
- function destroyCallbacksCollection(node) {
- ko.utils.domData.set(node, domDataKey, undefined);
- }
-
- function cleanSingleNode(node) {
- // Run all the dispose callbacks
- var callbacks = getDisposeCallbacksCollection(node, false);
- if (callbacks) {
- callbacks = callbacks.slice(0); // Clone, as the array may be modified during iteration (typically, callbacks will remove themselves)
- for (var i = 0; i < callbacks.length; i++)
- callbacks[i](node);
- }
-
- // Also erase the DOM data
- ko.utils.domData.clear(node);
-
- // Special support for jQuery here because it's so commonly used.
- // Many jQuery plugins (including jquery.tmpl) store data using jQuery's equivalent of domData
- // so notify it to tear down any resources associated with the node & descendants here.
- if ((typeof jQuery == "function") && (typeof jQuery['cleanData'] == "function"))
- jQuery['cleanData']([node]);
- }
-
- return {
- addDisposeCallback : function(node, callback) {
- if (typeof callback != "function")
- throw new Error("Callback must be a function");
- getDisposeCallbacksCollection(node, true).push(callback);
- },
-
- removeDisposeCallback : function(node, callback) {
- var callbacksCollection = getDisposeCallbacksCollection(node, false);
- if (callbacksCollection) {
- ko.utils.arrayRemoveItem(callbacksCollection, callback);
- if (callbacksCollection.length == 0)
- destroyCallbacksCollection(node);
- }
- },
-
- cleanNode : function(node) {
- if ((node.nodeType != 1) && (node.nodeType != 9))
- return;
- cleanSingleNode(node);
-
- // Clone the descendants list in case it changes during iteration
- var descendants = [];
- ko.utils.arrayPushAll(descendants, node.getElementsByTagName("*"));
- for (var i = 0, j = descendants.length; i < j; i++)
- cleanSingleNode(descendants[i]);
- },
-
- removeNode : function(node) {
- ko.cleanNode(node);
- if (node.parentNode)
- node.parentNode.removeChild(node);
- }
- }
-})();
-ko.cleanNode = ko.utils.domNodeDisposal.cleanNode; // Shorthand name for convenience
-ko.removeNode = ko.utils.domNodeDisposal.removeNode; // Shorthand name for convenience
-ko.exportSymbol('ko.cleanNode', ko.cleanNode);
-ko.exportSymbol('ko.removeNode', ko.removeNode);
-ko.exportSymbol('ko.utils.domNodeDisposal', ko.utils.domNodeDisposal);
-ko.exportSymbol('ko.utils.domNodeDisposal.addDisposeCallback', ko.utils.domNodeDisposal.addDisposeCallback);
-ko.exportSymbol('ko.utils.domNodeDisposal.removeDisposeCallback', ko.utils.domNodeDisposal.removeDisposeCallback);(function () {
- var leadingCommentRegex = /^(\s*)<!--(.*?)-->/;
-
- function simpleHtmlParse(html) {
- // Based on jQuery's "clean" function, but only accounting for table-related elements.
- // If you have referenced jQuery, this won't be used anyway - KO will use jQuery's "clean" function directly
-
- // Note that there's still an issue in IE < 9 whereby it will discard comment nodes that are the first child of
- // a descendant node. For example: "<div><!-- mycomment -->abc</div>" will get parsed as "<div>abc</div>"
- // This won't affect anyone who has referenced jQuery, and there's always the workaround of inserting a dummy node
- // (possibly a text node) in front of the comment. So, KO does not attempt to workaround this IE issue automatically at present.
-
- // Trim whitespace, otherwise indexOf won't work as expected
- var tags = ko.utils.stringTrim(html).toLowerCase(), div = document.createElement("div");
-
- // Finds the first match from the left column, and returns the corresponding "wrap" data from the right column
- var wrap = tags.match(/^<(thead|tbody|tfoot)/) && [1, "<table>", "</table>"] ||
- !tags.indexOf("<tr") && [2, "<table><tbody>", "</tbody></table>"] ||
- (!tags.indexOf("<td") || !tags.indexOf("<th")) && [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
- /* anything else */ [0, "", ""];
-
- // Go to html and back, then peel off extra wrappers
- // Note that we always prefix with some dummy text, because otherwise, IE<9 will strip out leading comment nodes in descendants. Total madness.
- var markup = "ignored<div>" + wrap[1] + html + wrap[2] + "</div>";
- if (typeof window['innerShiv'] == "function") {
- div.appendChild(window['innerShiv'](markup));
- } else {
- div.innerHTML = markup;
- }
-
- // Move to the right depth
- while (wrap[0]--)
- div = div.lastChild;
-
- return ko.utils.makeArray(div.lastChild.childNodes);
- }
-
- function jQueryHtmlParse(html) {
- var elems = jQuery['clean']([html]);
-
- // As of jQuery 1.7.1, jQuery parses the HTML by appending it to some dummy parent nodes held in an in-memory document fragment.
- // Unfortunately, it never clears the dummy parent nodes from the document fragment, so it leaks memory over time.
- // Fix this by finding the top-most dummy parent element, and detaching it from its owner fragment.
- if (elems && elems[0]) {
- // Find the top-most parent element that's a direct child of a document fragment
- var elem = elems[0];
- while (elem.parentNode && elem.parentNode.nodeType !== 11 /* i.e., DocumentFragment */)
- elem = elem.parentNode;
- // ... then detach it
- if (elem.parentNode)
- elem.parentNode.removeChild(elem);
- }
-
- return elems;
- }
-
- ko.utils.parseHtmlFragment = function(html) {
- return typeof jQuery != 'undefined' ? jQueryHtmlParse(html) // As below, benefit from jQuery's optimisations where possible
- : simpleHtmlParse(html); // ... otherwise, this simple logic will do in most common cases.
- };
-
- ko.utils.setHtml = function(node, html) {
- ko.utils.emptyDomNode(node);
-
- if ((html !== null) && (html !== undefined)) {
- if (typeof html != 'string')
- html = html.toString();
-
- // jQuery contains a lot of sophisticated code to parse arbitrary HTML fragments,
- // for example <tr> elements which are not normally allowed to exist on their own.
- // If you've referenced jQuery we'll use that rather than duplicating its code.
- if (typeof jQuery != 'undefined') {
- jQuery(node)['html'](html);
- } else {
- // ... otherwise, use KO's own parsing logic.
- var parsedNodes = ko.utils.parseHtmlFragment(html);
- for (var i = 0; i < parsedNodes.length; i++)
- node.appendChild(parsedNodes[i]);
- }
- }
- };
-})();
-
-ko.exportSymbol('ko.utils.parseHtmlFragment', ko.utils.parseHtmlFragment);
-ko.exportSymbol('ko.utils.setHtml', ko.utils.setHtml);
-ko.memoization = (function () {
- var memos = {};
-
- function randomMax8HexChars() {
- return (((1 + Math.random()) * 0x100000000) | 0).toString(16).substring(1);
- }
- function generateRandomId() {
- return randomMax8HexChars() + randomMax8HexChars();
- }
- function findMemoNodes(rootNode, appendToArray) {
- if (!rootNode)
- return;
- if (rootNode.nodeType == 8) {
- var memoId = ko.memoization.parseMemoText(rootNode.nodeValue);
- if (memoId != null)
- appendToArray.push({ domNode: rootNode, memoId: memoId });
- } else if (rootNode.nodeType == 1) {
- for (var i = 0, childNodes = rootNode.childNodes, j = childNodes.length; i < j; i++)
- findMemoNodes(childNodes[i], appendToArray);
- }
- }
-
- return {
- memoize: function (callback) {
- if (typeof callback != "function")
- throw new Error("You can only pass a function to ko.memoization.memoize()");
- var memoId = generateRandomId();
- memos[memoId] = callback;
- return "<!--[ko_memo:" + memoId + "]-->";
- },
-
- unmemoize: function (memoId, callbackParams) {
- var callback = memos[memoId];
- if (callback === undefined)
- throw new Error("Couldn't find any memo with ID " + memoId + ". Perhaps it's already been unmemoized.");
- try {
- callback.apply(null, callbackParams || []);
- return true;
- }
- finally { delete memos[memoId]; }
- },
-
- unmemoizeDomNodeAndDescendants: function (domNode, extraCallbackParamsArray) {
- var memos = [];
- findMemoNodes(domNode, memos);
- for (var i = 0, j = memos.length; i < j; i++) {
- var node = memos[i].domNode;
- var combinedParams = [node];
- if (extraCallbackParamsArray)
- ko.utils.arrayPushAll(combinedParams, extraCallbackParamsArray);
- ko.memoization.unmemoize(memos[i].memoId, combinedParams);
- node.nodeValue = ""; // Neuter this node so we don't try to unmemoize it again
- if (node.parentNode)
- node.parentNode.removeChild(node); // If possible, erase it totally (not always possible - someone else might just hold a reference to it then call unmemoizeDomNodeAndDescendants again)
- }
- },
-
- parseMemoText: function (memoText) {
- var match = memoText.match(/^\[ko_memo\:(.*?)\]$/);
- return match ? match[1] : null;
- }
- };
-})();
-
-ko.exportSymbol('ko.memoization', ko.memoization);
-ko.exportSymbol('ko.memoization.memoize', ko.memoization.memoize);
-ko.exportSymbol('ko.memoization.unmemoize', ko.memoization.unmemoize);
-ko.exportSymbol('ko.memoization.parseMemoText', ko.memoization.parseMemoText);
-ko.exportSymbol('ko.memoization.unmemoizeDomNodeAndDescendants', ko.memoization.unmemoizeDomNodeAndDescendants);
-ko.extenders = {
- 'throttle': function(target, timeout) {
- // Throttling means two things:
-
- // (1) For dependent observables, we throttle *evaluations* so that, no matter how fast its dependencies
- // notify updates, the target doesn't re-evaluate (and hence doesn't notify) faster than a certain rate
- target['throttleEvaluation'] = timeout;
-
- // (2) For writable targets (observables, or writable dependent observables), we throttle *writes*
- // so the target cannot change value synchronously or faster than a certain rate
- var writeTimeoutInstance = null;
- return ko.dependentObservable({
- 'read': target,
- 'write': function(value) {
- clearTimeout(writeTimeoutInstance);
- writeTimeoutInstance = setTimeout(function() {
- target(value);
- }, timeout);
- }
- });
- },
-
- 'notify': function(target, notifyWhen) {
- target["equalityComparer"] = notifyWhen == "always"
- ? function() { return false } // Treat all values as not equal
- : ko.observable["fn"]["equalityComparer"];
- return target;
- }
-};
-
-function applyExtenders(requestedExtenders) {
- var target = this;
- if (requestedExtenders) {
- for (var key in requestedExtenders) {
- var extenderHandler = ko.extenders[key];
- if (typeof extenderHandler == 'function') {
- target = extenderHandler(target, requestedExtenders[key]);
- }
- }
- }
- return target;
-}
-
-ko.exportSymbol('ko.extenders', ko.extenders);
-ko.subscription = function (callback, disposeCallback) {
- this.callback = callback;
- this.disposeCallback = disposeCallback;
- ko.exportProperty(this, 'dispose', this.dispose);
-};
-ko.subscription.prototype.dispose = function () {
- this.isDisposed = true;
- this.disposeCallback();
-};
-
-ko.subscribable = function () {
- this._subscriptions = {};
-
- ko.utils.extend(this, ko.subscribable['fn']);
- ko.exportProperty(this, 'subscribe', this.subscribe);
- ko.exportProperty(this, 'extend', this.extend);
- ko.exportProperty(this, 'getSubscriptionsCount', this.getSubscriptionsCount);
-}
-
-var defaultEvent = "change";
-
-ko.subscribable['fn'] = {
- subscribe: function (callback, callbackTarget, event) {
- event = event || defaultEvent;
- var boundCallback = callbackTarget ? callback.bind(callbackTarget) : callback;
-
- var subscription = new ko.subscription(boundCallback, function () {
- ko.utils.arrayRemoveItem(this._subscriptions[event], subscription);
- }.bind(this));
-
- if (!this._subscriptions[event])
- this._subscriptions[event] = [];
- this._subscriptions[event].push(subscription);
- return subscription;
- },
-
- "notifySubscribers": function (valueToNotify, event) {
- event = event || defaultEvent;
- if (this._subscriptions[event]) {
- ko.utils.arrayForEach(this._subscriptions[event].slice(0), function (subscription) {
- // In case a subscription was disposed during the arrayForEach cycle, check
- // for isDisposed on each subscription before invoking its callback
- if (subscription && (subscription.isDisposed !== true))
- subscription.callback(valueToNotify);
- });
- }
- },
-
- getSubscriptionsCount: function () {
- var total = 0;
- for (var eventName in this._subscriptions) {
- if (this._subscriptions.hasOwnProperty(eventName))
- total += this._subscriptions[eventName].length;
- }
- return total;
- },
-
- extend: applyExtenders
-};
-
-
-ko.isSubscribable = function (instance) {
- return typeof instance.subscribe == "function" && typeof instance["notifySubscribers"] == "function";
-};
-
-ko.exportSymbol('ko.subscribable', ko.subscribable);
-ko.exportSymbol('ko.isSubscribable', ko.isSubscribable);
-
-ko.dependencyDetection = (function () {
- var _frames = [];
-
- return {
- begin: function (callback) {
- _frames.push({ callback: callback, distinctDependencies:[] });
- },
-
- end: function () {
- _frames.pop();
- },
-
- registerDependency: function (subscribable) {
- if (!ko.isSubscribable(subscribable))
- throw "Only subscribable things can act as dependencies";
- if (_frames.length > 0) {
- var topFrame = _frames[_frames.length - 1];
- if (ko.utils.arrayIndexOf(topFrame.distinctDependencies, subscribable) >= 0)
- return;
- topFrame.distinctDependencies.push(subscribable);
- topFrame.callback(subscribable);
- }
- }
- };
-})();var primitiveTypes = { 'undefined':true, 'boolean':true, 'number':true, 'string':true };
-
-ko.observable = function (initialValue) {
- var _latestValue = initialValue;
-
- function observable() {
- if (arguments.length > 0) {
- // Write
-
- // Ignore writes if the value hasn't changed
- if ((!observable['equalityComparer']) || !observable['equalityComparer'](_latestValue, arguments[0])) {
- observable.valueWillMutate();
- _latestValue = arguments[0];
- observable.valueHasMutated();
- }
- return this; // Permits chained assignments
- }
- else {
- // Read
- ko.dependencyDetection.registerDependency(observable); // The caller only needs to be notified of changes if they did a "read" operation
- return _latestValue;
- }
- }
- ko.subscribable.call(observable);
- observable.valueHasMutated = function () { observable["notifySubscribers"](_latestValue); }
- observable.valueWillMutate = function () { observable["notifySubscribers"](_latestValue, "beforeChange"); }
- ko.utils.extend(observable, ko.observable['fn']);
-
- ko.exportProperty(observable, "valueHasMutated", observable.valueHasMutated);
- ko.exportProperty(observable, "valueWillMutate", observable.valueWillMutate);
-
- return observable;
-}
-
-ko.observable['fn'] = {
- __ko_proto__: ko.observable,
-
- "equalityComparer": function valuesArePrimitiveAndEqual(a, b) {
- var oldValueIsPrimitive = (a === null) || (typeof(a) in primitiveTypes);
- return oldValueIsPrimitive ? (a === b) : false;
- }
-};
-
-ko.isObservable = function (instance) {
- if ((instance === null) || (instance === undefined) || (instance.__ko_proto__ === undefined)) return false;
- if (instance.__ko_proto__ === ko.observable) return true;
- return ko.isObservable(instance.__ko_proto__); // Walk the prototype chain
-}
-ko.isWriteableObservable = function (instance) {
- // Observable
- if ((typeof instance == "function") && instance.__ko_proto__ === ko.observable)
- return true;
- // Writeable dependent observable
- if ((typeof instance == "function") && (instance.__ko_proto__ === ko.dependentObservable) && (instance.hasWriteFunction))
- return true;
- // Anything else
- return false;
-}
-
-
-ko.exportSymbol('ko.observable', ko.observable);
-ko.exportSymbol('ko.isObservable', ko.isObservable);
-ko.exportSymbol('ko.isWriteableObservable', ko.isWriteableObservable);
-ko.observableArray = function (initialValues) {
- if (arguments.length == 0) {
- // Zero-parameter constructor initializes to empty array
- initialValues = [];
- }
- if ((initialValues !== null) && (initialValues !== undefined) && !('length' in initialValues))
- throw new Error("The argument passed when initializing an observable array must be an array, or null, or undefined.");
-
- var result = new ko.observable(initialValues);
- ko.utils.extend(result, ko.observableArray['fn']);
-
- ko.exportProperty(result, "remove", result.remove);
- ko.exportProperty(result, "removeAll", result.removeAll);
- ko.exportProperty(result, "destroy", result.destroy);
- ko.exportProperty(result, "destroyAll", result.destroyAll);
- ko.exportProperty(result, "indexOf", result.indexOf);
- ko.exportProperty(result, "replace", result.replace);
-
- return result;
-}
-
-ko.observableArray['fn'] = {
- remove: function (valueOrPredicate) {
- var underlyingArray = this();
- var removedValues = [];
- var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; };
- for (var i = 0; i < underlyingArray.length; i++) {
- var value = underlyingArray[i];
- if (predicate(value)) {
- if (removedValues.length === 0) {
- this.valueWillMutate();
- }
- removedValues.push(value);
- underlyingArray.splice(i, 1);
- i--;
- }
- }
- if (removedValues.length) {
- this.valueHasMutated();
- }
- return removedValues;
- },
-
- removeAll: function (arrayOfValues) {
- // If you passed zero args, we remove everything
- if (arrayOfValues === undefined) {
- var underlyingArray = this();
- var allValues = underlyingArray.slice(0);
- this.valueWillMutate();
- underlyingArray.splice(0, underlyingArray.length);
- this.valueHasMutated();
- return allValues;
- }
- // If you passed an arg, we interpret it as an array of entries to remove
- if (!arrayOfValues)
- return [];
- return this.remove(function (value) {
- return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;
- });
- },
-
- destroy: function (valueOrPredicate) {
- var underlyingArray = this();
- var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; };
- this.valueWillMutate();
- for (var i = underlyingArray.length - 1; i >= 0; i--) {
- var value = underlyingArray[i];
- if (predicate(value))
- underlyingArray[i]["_destroy"] = true;
- }
- this.valueHasMutated();
- },
-
- destroyAll: function (arrayOfValues) {
- // If you passed zero args, we destroy everything
- if (arrayOfValues === undefined)
- return this.destroy(function() { return true });
-
- // If you passed an arg, we interpret it as an array of entries to destroy
- if (!arrayOfValues)
- return [];
- return this.destroy(function (value) {
- return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;
- });
- },
-
- indexOf: function (item) {
- var underlyingArray = this();
- return ko.utils.arrayIndexOf(underlyingArray, item);
- },
-
- replace: function(oldItem, newItem) {
- var index = this.indexOf(oldItem);
- if (index >= 0) {
- this.valueWillMutate();
- this()[index] = newItem;
- this.valueHasMutated();
- }
- }
-}
-
-// Populate ko.observableArray.fn with read/write functions from native arrays
-ko.utils.arrayForEach(["pop", "push", "reverse", "shift", "sort", "splice", "unshift"], function (methodName) {
- ko.observableArray['fn'][methodName] = function () {
- var underlyingArray = this();
- this.valueWillMutate();
- var methodCallResult = underlyingArray[methodName].apply(underlyingArray, arguments);
- this.valueHasMutated();
- return methodCallResult;
- };
-});
-
-// Populate ko.observableArray.fn with read-only functions from native arrays
-ko.utils.arrayForEach(["slice"], function (methodName) {
- ko.observableArray['fn'][methodName] = function () {
- var underlyingArray = this();
- return underlyingArray[methodName].apply(underlyingArray, arguments);
- };
-});
-
-ko.exportSymbol('ko.observableArray', ko.observableArray);
-function prepareOptions(evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) {
- if (evaluatorFunctionOrOptions && typeof evaluatorFunctionOrOptions == "object") {
- // Single-parameter syntax - everything is on this "options" param
- options = evaluatorFunctionOrOptions;
- } else {
- // Multi-parameter syntax - construct the options according to the params passed
- options = options || {};
- options["read"] = evaluatorFunctionOrOptions || options["read"];
- }
- // By here, "options" is always non-null
-
- if (typeof options["read"] != "function")
- throw "Pass a function that returns the value of the dependentObservable";
-
- return options;
-}
-
-ko.dependentObservable = function (evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) {
- var _latestValue,
- _hasBeenEvaluated = false,
- options = prepareOptions(evaluatorFunctionOrOptions, evaluatorFunctionTarget, options);
-
- // Build "disposeWhenNodeIsRemoved" and "disposeWhenNodeIsRemovedCallback" option values
- // (Note: "disposeWhenNodeIsRemoved" option both proactively disposes as soon as the node is removed using ko.removeNode(),
- // plus adds a "disposeWhen" callback that, on each evaluation, disposes if the node was removed by some other means.)
- var disposeWhenNodeIsRemoved = (typeof options["disposeWhenNodeIsRemoved"] == "object") ? options["disposeWhenNodeIsRemoved"] : null;
- var disposeWhenNodeIsRemovedCallback = null;
- if (disposeWhenNodeIsRemoved) {
- disposeWhenNodeIsRemovedCallback = function() { dependentObservable.dispose() };
- ko.utils.domNodeDisposal.addDisposeCallback(disposeWhenNodeIsRemoved, disposeWhenNodeIsRemovedCallback);
- var existingDisposeWhenFunction = options["disposeWhen"];
- options["disposeWhen"] = function () {
- return (!ko.utils.domNodeIsAttachedToDocument(disposeWhenNodeIsRemoved))
- || ((typeof existingDisposeWhenFunction == "function") && existingDisposeWhenFunction());
- }
- }
-
- var _subscriptionsToDependencies = [];
- function disposeAllSubscriptionsToDependencies() {
- ko.utils.arrayForEach(_subscriptionsToDependencies, function (subscription) {
- subscription.dispose();
- });
- _subscriptionsToDependencies = [];
- }
-
- var evaluationTimeoutInstance = null;
- function evaluatePossiblyAsync() {
- var throttleEvaluationTimeout = dependentObservable['throttleEvaluation'];
- if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {
- clearTimeout(evaluationTimeoutInstance);
- evaluationTimeoutInstance = setTimeout(evaluateImmediate, throttleEvaluationTimeout);
- } else
- evaluateImmediate();
- }
-
- function evaluateImmediate() {
- // Don't dispose on first evaluation, because the "disposeWhen" callback might
- // e.g., dispose when the associated DOM element isn't in the doc, and it's not
- // going to be in the doc until *after* the first evaluation
- if ((_hasBeenEvaluated) && typeof options["disposeWhen"] == "function") {
- if (options["disposeWhen"]()) {
- dependentObservable.dispose();
- return;
- }
- }
-
- try {
- disposeAllSubscriptionsToDependencies();
- ko.dependencyDetection.begin(function(subscribable) {
- _subscriptionsToDependencies.push(subscribable.subscribe(evaluatePossiblyAsync));
- });
- var valueForThis = options["owner"] || evaluatorFunctionTarget; // If undefined, it will default to "window" by convention. This might change in the future.
- var newValue = options["read"].call(valueForThis);
- dependentObservable["notifySubscribers"](_latestValue, "beforeChange");
- _latestValue = newValue;
- } finally {
- ko.dependencyDetection.end();
- }
-
- dependentObservable["notifySubscribers"](_latestValue);
- _hasBeenEvaluated = true;
- }
-
- function dependentObservable() {
- if (arguments.length > 0) {
- if (typeof options["write"] === "function") {
- // Writing a value
- var valueForThis = options["owner"] || evaluatorFunctionTarget; // If undefined, it will default to "window" by convention. This might change in the future.
- options["write"].apply(valueForThis, arguments);
- } else {
- throw "Cannot write a value to a dependentObservable unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters.";
- }
- } else {
- // Reading the value
- if (!_hasBeenEvaluated)
- evaluateImmediate();
- ko.dependencyDetection.registerDependency(dependentObservable);
- return _latestValue;
- }
- }
- dependentObservable.getDependenciesCount = function () { return _subscriptionsToDependencies.length; }
- dependentObservable.hasWriteFunction = typeof options["write"] === "function";
- dependentObservable.dispose = function () {
- if (disposeWhenNodeIsRemoved)
- ko.utils.domNodeDisposal.removeDisposeCallback(disposeWhenNodeIsRemoved, disposeWhenNodeIsRemovedCallback);
- disposeAllSubscriptionsToDependencies();
- };
-
- ko.subscribable.call(dependentObservable);
- ko.utils.extend(dependentObservable, ko.dependentObservable['fn']);
-
- if (options['deferEvaluation'] !== true)
- evaluateImmediate();
-
- ko.exportProperty(dependentObservable, 'dispose', dependentObservable.dispose);
- ko.exportProperty(dependentObservable, 'getDependenciesCount', dependentObservable.getDependenciesCount);
-
- return dependentObservable;
-};
-
-ko.dependentObservable['fn'] = {
- __ko_proto__: ko.dependentObservable
-};
-
-ko.dependentObservable.__ko_proto__ = ko.observable;
-
-ko.exportSymbol('ko.dependentObservable', ko.dependentObservable);
-ko.exportSymbol('ko.computed', ko.dependentObservable); // Make "ko.computed" an alias for "ko.dependentObservable"
-(function() {
- var maxNestedObservableDepth = 10; // Escape the (unlikely) pathalogical case where an observable's current value is itself (or similar reference cycle)
-
- ko.toJS = function(rootObject) {
- if (arguments.length == 0)
- throw new Error("When calling ko.toJS, pass the object you want to convert.");
-
- // We just unwrap everything at every level in the object graph
- return mapJsObjectGraph(rootObject, function(valueToMap) {
- // Loop because an observable's value might in turn be another observable wrapper
- for (var i = 0; ko.isObservable(valueToMap) && (i < maxNestedObservableDepth); i++)
- valueToMap = valueToMap();
- return valueToMap;
- });
- };
-
- ko.toJSON = function(rootObject) {
- var plainJavaScriptObject = ko.toJS(rootObject);
- return ko.utils.stringifyJson(plainJavaScriptObject);
- };
-
- function mapJsObjectGraph(rootObject, mapInputCallback, visitedObjects) {
- visitedObjects = visitedObjects || new objectLookup();
-
- rootObject = mapInputCallback(rootObject);
- var canHaveProperties = (typeof rootObject == "object") && (rootObject !== null) && (rootObject !== undefined) && (!(rootObject instanceof Date));
- if (!canHaveProperties)
- return rootObject;
-
- var outputProperties = rootObject instanceof Array ? [] : {};
- visitedObjects.save(rootObject, outputProperties);
-
- visitPropertiesOrArrayEntries(rootObject, function(indexer) {
- var propertyValue = mapInputCallback(rootObject[indexer]);
-
- switch (typeof propertyValue) {
- case "boolean":
- case "number":
- case "string":
- case "function":
- outputProperties[indexer] = propertyValue;
- break;
- case "object":
- case "undefined":
- var previouslyMappedValue = visitedObjects.get(propertyValue);
- outputProperties[indexer] = (previouslyMappedValue !== undefined)
- ? previouslyMappedValue
- : mapJsObjectGraph(propertyValue, mapInputCallback, visitedObjects);
- break;
- }
- });
-
- return outputProperties;
- }
-
- function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {
- if (rootObject instanceof Array) {
- for (var i = 0; i < rootObject.length; i++)
- visitorCallback(i);
- } else {
- for (var propertyName in rootObject)
- visitorCallback(propertyName);
- }
- };
-
- function objectLookup() {
- var keys = [];
- var values = [];
- this.save = function(key, value) {
- var existingIndex = ko.utils.arrayIndexOf(keys, key);
- if (existingIndex >= 0)
- values[existingIndex] = value;
- else {
- keys.push(key);
- values.push(value);
- }
- };
- this.get = function(key) {
- var existingIndex = ko.utils.arrayIndexOf(keys, key);
- return (existingIndex >= 0) ? values[existingIndex] : undefined;
- };
- };
-})();
-
-ko.exportSymbol('ko.toJS', ko.toJS);
-ko.exportSymbol('ko.toJSON', ko.toJSON);(function () {
- var hasDomDataExpandoProperty = '__ko__hasDomDataOptionValue__';
-
- // Normally, SELECT elements and their OPTIONs can only take value of type 'string' (because the values
- // are stored on DOM attributes). ko.selectExtensions provides a way for SELECTs/OPTIONs to have values
- // that are arbitrary objects. This is very convenient when implementing things like cascading dropdowns.
- ko.selectExtensions = {
- readValue : function(element) {
- if (element.tagName == 'OPTION') {
- if (element[hasDomDataExpandoProperty] === true)
- return ko.utils.domData.get(element, ko.bindingHandlers.options.optionValueDomDataKey);
- return element.getAttribute("value");
- } else if (element.tagName == 'SELECT')
- return element.selectedIndex >= 0 ? ko.selectExtensions.readValue(element.options[element.selectedIndex]) : undefined;
- else
- return element.value;
- },
-
- writeValue: function(element, value) {
- if (element.tagName == 'OPTION') {
- switch(typeof value) {
- case "string":
- ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, undefined);
- if (hasDomDataExpandoProperty in element) { // IE <= 8 throws errors if you delete non-existent properties from a DOM node
- delete element[hasDomDataExpandoProperty];
- }
- element.value = value;
- break;
- default:
- // Store arbitrary object using DomData
- ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, value);
- element[hasDomDataExpandoProperty] = true;
-
- // Special treatment of numbers is just for backward compatibility. KO 1.2.1 wrote numerical values to element.value.
- element.value = typeof value === "number" ? value : "";
- break;
- }
- } else if (element.tagName == 'SELECT') {
- for (var i = element.options.length - 1; i >= 0; i--) {
- if (ko.selectExtensions.readValue(element.options[i]) == value) {
- element.selectedIndex = i;
- break;
- }
- }
- } else {
- if ((value === null) || (value === undefined))
- value = "";
- element.value = value;
- }
- }
- };
-})();
-
-ko.exportSymbol('ko.selectExtensions', ko.selectExtensions);
-ko.exportSymbol('ko.selectExtensions.readValue', ko.selectExtensions.readValue);
-ko.exportSymbol('ko.selectExtensions.writeValue', ko.selectExtensions.writeValue);
-
-ko.jsonExpressionRewriting = (function () {
- var restoreCapturedTokensRegex = /\@ko_token_(\d+)\@/g;
- var javaScriptAssignmentTarget = /^[\_$a-z][\_$a-z0-9]*(\[.*?\])*(\.[\_$a-z][\_$a-z0-9]*(\[.*?\])*)*$/i;
- var javaScriptReservedWords = ["true", "false"];
-
- function restoreTokens(string, tokens) {
- var prevValue = null;
- while (string != prevValue) { // Keep restoring tokens until it no longer makes a difference (they may be nested)
- prevValue = string;
- string = string.replace(restoreCapturedTokensRegex, function (match, tokenIndex) {
- return tokens[tokenIndex];
- });
- }
- return string;
- }
-
- function isWriteableValue(expression) {
- if (ko.utils.arrayIndexOf(javaScriptReservedWords, ko.utils.stringTrim(expression).toLowerCase()) >= 0)
- return false;
- return expression.match(javaScriptAssignmentTarget) !== null;
- }
-
- function ensureQuoted(key) {
- var trimmedKey = ko.utils.stringTrim(key);
- switch (trimmedKey.length && trimmedKey.charAt(0)) {
- case "'":
- case '"':
- return key;
- default:
- return "'" + trimmedKey + "'";
- }
- }
-
- return {
- bindingRewriteValidators: [],
-
- parseObjectLiteral: function(objectLiteralString) {
- // A full tokeniser+lexer would add too much weight to this library, so here's a simple parser
- // that is sufficient just to split an object literal string into a set of top-level key-value pairs
-
- var str = ko.utils.stringTrim(objectLiteralString);
- if (str.length < 3)
- return [];
- if (str.charAt(0) === "{")// Ignore any braces surrounding the whole object literal
- str = str.substring(1, str.length - 1);
-
- // Pull out any string literals and regex literals
- var tokens = [];
- var tokenStart = null, tokenEndChar;
- for (var position = 0; position < str.length; position++) {
- var c = str.charAt(position);
- if (tokenStart === null) {
- switch (c) {
- case '"':
- case "'":
- case "/":
- tokenStart = position;
- tokenEndChar = c;
- break;
- }
- } else if ((c == tokenEndChar) && (str.charAt(position - 1) !== "\\")) {
- var token = str.substring(tokenStart, position + 1);
- tokens.push(token);
- var replacement = "@ko_token_" + (tokens.length - 1) + "@";
- str = str.substring(0, tokenStart) + replacement + str.substring(position + 1);
- position -= (token.length - replacement.length);
- tokenStart = null;
- }
- }
-
- // Next pull out balanced paren, brace, and bracket blocks
- tokenStart = null;
- tokenEndChar = null;
- var tokenDepth = 0, tokenStartChar = null;
- for (var position = 0; position < str.length; position++) {
- var c = str.charAt(position);
- if (tokenStart === null) {
- switch (c) {
- case "{": tokenStart = position; tokenStartChar = c;
- tokenEndChar = "}";
- break;
- case "(": tokenStart = position; tokenStartChar = c;
- tokenEndChar = ")";
- break;
- case "[": tokenStart = position; tokenStartChar = c;
- tokenEndChar = "]";
- break;
- }
- }
-
- if (c === tokenStartChar)
- tokenDepth++;
- else if (c === tokenEndChar) {
- tokenDepth--;
- if (tokenDepth === 0) {
- var token = str.substring(tokenStart, position + 1);
- tokens.push(token);
- var replacement = "@ko_token_" + (tokens.length - 1) + "@";
- str = str.substring(0, tokenStart) + replacement + str.substring(position + 1);
- position -= (token.length - replacement.length);
- tokenStart = null;
- }
- }
- }
-
- // Now we can safely split on commas to get the key/value pairs
- var result = [];
- var keyValuePairs = str.split(",");
- for (var i = 0, j = keyValuePairs.length; i < j; i++) {
- var pair = keyValuePairs[i];
- var colonPos = pair.indexOf(":");
- if ((colonPos > 0) && (colonPos < pair.length - 1)) {
- var key = pair.substring(0, colonPos);
- var value = pair.substring(colonPos + 1);
- result.push({ 'key': restoreTokens(key, tokens), 'value': restoreTokens(value, tokens) });
- } else {
- result.push({ 'unknown': restoreTokens(pair, tokens) });
- }
- }
- return result;
- },
-
- insertPropertyAccessorsIntoJson: function (objectLiteralStringOrKeyValueArray) {
- var keyValueArray = typeof objectLiteralStringOrKeyValueArray === "string"
- ? ko.jsonExpressionRewriting.parseObjectLiteral(objectLiteralStringOrKeyValueArray)
- : objectLiteralStringOrKeyValueArray;
- var resultStrings = [], propertyAccessorResultStrings = [];
-
- var keyValueEntry;
- for (var i = 0; keyValueEntry = keyValueArray[i]; i++) {
- if (resultStrings.length > 0)
- resultStrings.push(",");
-
- if (keyValueEntry['key']) {
- var quotedKey = ensureQuoted(keyValueEntry['key']), val = keyValueEntry['value'];
- resultStrings.push(quotedKey);
- resultStrings.push(":");
- resultStrings.push(val);
-
- if (isWriteableValue(ko.utils.stringTrim(val))) {
- if (propertyAccessorResultStrings.length > 0)
- propertyAccessorResultStrings.push(", ");
- propertyAccessorResultStrings.push(quotedKey + " : function(__ko_value) { " + val + " = __ko_value; }");
- }
- } else if (keyValueEntry['unknown']) {
- resultStrings.push(keyValueEntry['unknown']);
- }
- }
-
- var combinedResult = resultStrings.join("");
- if (propertyAccessorResultStrings.length > 0) {
- var allPropertyAccessors = propertyAccessorResultStrings.join("");
- combinedResult = combinedResult + ", '_ko_property_writers' : { " + allPropertyAccessors + " } ";
- }
-
- return combinedResult;
- },
-
- keyValueArrayContainsKey: function(keyValueArray, key) {
- for (var i = 0; i < keyValueArray.length; i++)
- if (ko.utils.stringTrim(keyValueArray[i]['key']) == key)
- return true;
- return false;
- }
- };
-})();
-
-ko.exportSymbol('ko.jsonExpressionRewriting', ko.jsonExpressionRewriting);
-ko.exportSymbol('ko.jsonExpressionRewriting.bindingRewriteValidators', ko.jsonExpressionRewriting.bindingRewriteValidators);
-ko.exportSymbol('ko.jsonExpressionRewriting.parseObjectLiteral', ko.jsonExpressionRewriting.parseObjectLiteral);
-ko.exportSymbol('ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson', ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson);
-(function() {
- // "Virtual elements" is an abstraction on top of the usual DOM API which understands the notion that comment nodes
- // may be used to represent hierarchy (in addition to the DOM's natural hierarchy).
- // If you call the DOM-manipulating functions on ko.virtualElements, you will be able to read and write the state
- // of that virtual hierarchy
- //
- // The point of all this is to support containerless templates (e.g., <!-- ko foreach:someCollection -->blah<!-- /ko -->)
- // without having to scatter special cases all over the binding and templating code.
-
- // IE 9 cannot reliably read the "nodeValue" property of a comment node (see https://github.com/SteveSanderson/knockout/issues/186)
- // but it does give them a nonstandard alternative property called "text" that it can read reliably. Other browsers don't have that property.
- // So, use node.text where available, and node.nodeValue elsewhere
- var commentNodesHaveTextProperty = document.createComment("test").text === "<!--test-->";
-
- var startCommentRegex = commentNodesHaveTextProperty ? /^<!--\s*ko\s+(.*\:.*)\s*-->$/ : /^\s*ko\s+(.*\:.*)\s*$/;
- var endCommentRegex = commentNodesHaveTextProperty ? /^<!--\s*\/ko\s*-->$/ : /^\s*\/ko\s*$/;
- var htmlTagsWithOptionallyClosingChildren = { 'ul': true, 'ol': true };
-
- function isStartComment(node) {
- return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(startCommentRegex);
- }
-
- function isEndComment(node) {
- return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(endCommentRegex);
- }
-
- function getVirtualChildren(startComment, allowUnbalanced) {
- var currentNode = startComment;
- var depth = 1;
- var children = [];
- while (currentNode = currentNode.nextSibling) {
- if (isEndComment(currentNode)) {
- depth--;
- if (depth === 0)
- return children;
- }
-
- children.push(currentNode);
-
- if (isStartComment(currentNode))
- depth++;
- }
- if (!allowUnbalanced)
- throw new Error("Cannot find closing comment tag to match: " + startComment.nodeValue);
- return null;
- }
-
- function getMatchingEndComment(startComment, allowUnbalanced) {
- var allVirtualChildren = getVirtualChildren(startComment, allowUnbalanced);
- if (allVirtualChildren) {
- if (allVirtualChildren.length > 0)
- return allVirtualChildren[allVirtualChildren.length - 1].nextSibling;
- return startComment.nextSibling;
- } else
- return null; // Must have no matching end comment, and allowUnbalanced is true
- }
-
- function nodeArrayToText(nodeArray, cleanNodes) {
- var texts = [];
- for (var i = 0, j = nodeArray.length; i < j; i++) {
- if (cleanNodes)
- ko.utils.domNodeDisposal.cleanNode(nodeArray[i]);
- texts.push(ko.utils.outerHTML(nodeArray[i]));
- }
- return String.prototype.concat.apply("", texts);
- }
-
- function getUnbalancedChildTags(node) {
- // e.g., from <div>OK</div><!-- ko blah --><span>Another</span>, returns: <!-- ko blah --><span>Another</span>
- // from <div>OK</div><!-- /ko --><!-- /ko -->, returns: <!-- /ko --><!-- /ko -->
- var childNode = node.firstChild, captureRemaining = null;
- if (childNode) {
- do {
- if (captureRemaining) // We already hit an unbalanced node and are now just scooping up all subsequent nodes
- captureRemaining.push(childNode);
- else if (isStartComment(childNode)) {
- var matchingEndComment = getMatchingEndComment(childNode, /* allowUnbalanced: */ true);
- if (matchingEndComment) // It's a balanced tag, so skip immediately to the end of this virtual set
- childNode = matchingEndComment;
- else
- captureRemaining = [childNode]; // It's unbalanced, so start capturing from this point
- } else if (isEndComment(childNode)) {
- captureRemaining = [childNode]; // It's unbalanced (if it wasn't, we'd have skipped over it already), so start capturing
- }
- } while (childNode = childNode.nextSibling);
- }
- return captureRemaining;
- }
-
- ko.virtualElements = {
- allowedBindings: {},
-
- childNodes: function(node) {
- return isStartComment(node) ? getVirtualChildren(node) : node.childNodes;
- },
-
- emptyNode: function(node) {
- if (!isStartComment(node))
- ko.utils.emptyDomNode(node);
- else {
- var virtualChildren = ko.virtualElements.childNodes(node);
- for (var i = 0, j = virtualChildren.length; i < j; i++)
- ko.removeNode(virtualChildren[i]);
- }
- },
-
- setDomNodeChildren: function(node, childNodes) {
- if (!isStartComment(node))
- ko.utils.setDomNodeChildren(node, childNodes);
- else {
- ko.virtualElements.emptyNode(node);
- var endCommentNode = node.nextSibling; // Must be the next sibling, as we just emptied the children
- for (var i = 0, j = childNodes.length; i < j; i++)
- endCommentNode.parentNode.insertBefore(childNodes[i], endCommentNode);
- }
- },
-
- prepend: function(containerNode, nodeToPrepend) {
- if (!isStartComment(containerNode)) {
- if (containerNode.firstChild)
- containerNode.insertBefore(nodeToPrepend, containerNode.firstChild);
- else
- containerNode.appendChild(nodeToPrepend);
- } else {
- // Start comments must always have a parent and at least one following sibling (the end comment)
- containerNode.parentNode.insertBefore(nodeToPrepend, containerNode.nextSibling);
- }
- },
-
- insertAfter: function(containerNode, nodeToInsert, insertAfterNode) {
- if (!isStartComment(containerNode)) {
- // Insert after insertion point
- if (insertAfterNode.nextSibling)
- containerNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);
- else
- containerNode.appendChild(nodeToInsert);
- } else {
- // Children of start comments must always have a parent and at least one following sibling (the end comment)
- containerNode.parentNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);
- }
- },
-
- nextSibling: function(node) {
- if (!isStartComment(node)) {
- if (node.nextSibling && isEndComment(node.nextSibling))
- return undefined;
- return node.nextSibling;
- } else {
- return getMatchingEndComment(node).nextSibling;
- }
- },
-
- virtualNodeBindingValue: function(node) {
- var regexMatch = isStartComment(node);
- return regexMatch ? regexMatch[1] : null;
- },
-
- extractAnonymousTemplateIfVirtualElement: function(node) {
- if (ko.virtualElements.virtualNodeBindingValue(node)) {
- // Empty out the virtual children, and associate "node" with an anonymous template matching its previous virtual children
- var virtualChildren = ko.virtualElements.childNodes(node);
- var anonymousTemplateText = nodeArrayToText(virtualChildren, true);
- ko.virtualElements.emptyNode(node);
- new ko.templateSources.anonymousTemplate(node).text(anonymousTemplateText);
- }
- },
-
- normaliseVirtualElementDomStructure: function(elementVerified) {
- // Workaround for https://github.com/SteveSanderson/knockout/issues/155
- // (IE <= 8 or IE 9 quirks mode parses your HTML weirdly, treating closing </li> tags as if they don't exist, thereby moving comment nodes
- // that are direct descendants of <ul> into the preceding <li>)
- if (!htmlTagsWithOptionallyClosingChildren[elementVerified.tagName.toLowerCase()])
- return;
-
- // Scan immediate children to see if they contain unbalanced comment tags. If they do, those comment tags
- // must be intended to appear *after* that child, so move them there.
- var childNode = elementVerified.firstChild;
- if (childNode) {
- do {
- if (childNode.nodeType === 1) {
- var unbalancedTags = getUnbalancedChildTags(childNode);
- if (unbalancedTags) {
- // Fix up the DOM by moving the unbalanced tags to where they most likely were intended to be placed - *after* the child
- var nodeToInsertBefore = childNode.nextSibling;
- for (var i = 0; i < unbalancedTags.length; i++) {
- if (nodeToInsertBefore)
- elementVerified.insertBefore(unbalancedTags[i], nodeToInsertBefore);
- else
- elementVerified.appendChild(unbalancedTags[i]);
- }
- }
- }
- } while (childNode = childNode.nextSibling);
- }
- }
- };
-})();
-(function() {
- var defaultBindingAttributeName = "data-bind";
-
- ko.bindingProvider = function() { };
-
- ko.utils.extend(ko.bindingProvider.prototype, {
- 'nodeHasBindings': function(node) {
- switch (node.nodeType) {
- case 1: return node.getAttribute(defaultBindingAttributeName) != null; // Element
- case 8: return ko.virtualElements.virtualNodeBindingValue(node) != null; // Comment node
- default: return false;
- }
- },
-
- 'getBindings': function(node, bindingContext) {
- var bindingsString = this['getBindingsString'](node, bindingContext);
- return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext) : null;
- },
-
- // The following function is only used internally by this default provider.
- // It's not part of the interface definition for a general binding provider.
- 'getBindingsString': function(node, bindingContext) {
- switch (node.nodeType) {
- case 1: return node.getAttribute(defaultBindingAttributeName); // Element
- case 8: return ko.virtualElements.virtualNodeBindingValue(node); // Comment node
- default: return null;
- }
- },
-
- // The following function is only used internally by this default provider.
- // It's not part of the interface definition for a general binding provider.
- 'parseBindingsString': function(bindingsString, bindingContext) {
- try {
- var viewModel = bindingContext['$data'];
- var rewrittenBindings = " { " + ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson(bindingsString) + " } ";
- return ko.utils.evalWithinScope(rewrittenBindings, viewModel === null ? window : viewModel, bindingContext);
- } catch (ex) {
- throw new Error("Unable to parse bindings.\nMessage: " + ex + ";\nBindings value: " + bindingsString);
- }
- }
- });
-
- ko.bindingProvider['instance'] = new ko.bindingProvider();
-})();
-
-ko.exportSymbol('ko.bindingProvider', ko.bindingProvider);(function () {
- ko.bindingHandlers = {};
-
- ko.bindingContext = function(dataItem, parentBindingContext) {
- this['$data'] = dataItem;
- if (parentBindingContext) {
- this['$parent'] = parentBindingContext['$data'];
- this['$parents'] = (parentBindingContext['$parents'] || []).slice(0);
- this['$parents'].unshift(this['$parent']);
- this['$root'] = parentBindingContext['$root'];
- } else {
- this['$parents'] = [];
- this['$root'] = dataItem;
- }
- }
- ko.bindingContext.prototype['createChildContext'] = function (dataItem) {
- return new ko.bindingContext(dataItem, this);
- };
-
- function validateThatBindingIsAllowedForVirtualElements(bindingName) {
- var validator = ko.virtualElements.allowedBindings[bindingName];
- if (!validator)
- throw new Error("The binding '" + bindingName + "' cannot be used with virtual elements")
- }
-
- function applyBindingsToDescendantsInternal (viewModel, elementVerified) {
- var currentChild, nextInQueue = elementVerified.childNodes[0];
- while (currentChild = nextInQueue) {
- // Keep a record of the next child *before* applying bindings, in case the binding removes the current child from its position
- nextInQueue = ko.virtualElements.nextSibling(currentChild);
- applyBindingsToNodeAndDescendantsInternal(viewModel, currentChild, false);
- }
- }
-
- function applyBindingsToNodeAndDescendantsInternal (viewModel, nodeVerified, isRootNodeForBindingContext) {
- var shouldBindDescendants = true;
-
- // Perf optimisation: Apply bindings only if...
- // (1) It's a root element for this binding context, as we will need to store the binding context on this node
- // Note that we can't store binding contexts on non-elements (e.g., text nodes), as IE doesn't allow expando properties for those
- // (2) It might have bindings (e.g., it has a data-bind attribute, or it's a marker for a containerless template)
- var isElement = (nodeVerified.nodeType == 1);
- if (isElement) // Workaround IE <= 8 HTML parsing weirdness
- ko.virtualElements.normaliseVirtualElementDomStructure(nodeVerified);
-
- var shouldApplyBindings = (isElement && isRootNodeForBindingContext) // Case (1)
- || ko.bindingProvider['instance']['nodeHasBindings'](nodeVerified); // Case (2)
- if (shouldApplyBindings)
- shouldBindDescendants = applyBindingsToNodeInternal(nodeVerified, null, viewModel, isRootNodeForBindingContext).shouldBindDescendants;
-
- if (isElement && shouldBindDescendants)
- applyBindingsToDescendantsInternal(viewModel, nodeVerified);
- }
-
- function applyBindingsToNodeInternal (node, bindings, viewModelOrBindingContext, isRootNodeForBindingContext) {
- // Need to be sure that inits are only run once, and updates never run until all the inits have been run
- var initPhase = 0; // 0 = before all inits, 1 = during inits, 2 = after all inits
-
- // Pre-process any anonymous template bounded by comment nodes
- ko.virtualElements.extractAnonymousTemplateIfVirtualElement(node);
-
- // Each time the dependentObservable is evaluated (after data changes),
- // the binding attribute is reparsed so that it can pick out the correct
- // model properties in the context of the changed data.
- // DOM event callbacks need to be able to access this changed data,
- // so we need a single parsedBindings variable (shared by all callbacks
- // associated with this node's bindings) that all the closures can access.
- var parsedBindings;
- function makeValueAccessor(bindingKey) {
- return function () { return parsedBindings[bindingKey] }
- }
- function parsedBindingsAccessor() {
- return parsedBindings;
- }
-
- var bindingHandlerThatControlsDescendantBindings;
- new ko.dependentObservable(
- function () {
- // Ensure we have a nonnull binding context to work with
- var bindingContextInstance = viewModelOrBindingContext && (viewModelOrBindingContext instanceof ko.bindingContext)
- ? viewModelOrBindingContext
- : new ko.bindingContext(ko.utils.unwrapObservable(viewModelOrBindingContext));
- var viewModel = bindingContextInstance['$data'];
-
- // We only need to store the bindingContext at the root of the subtree where it applies
- // as all descendants will be able to find it by scanning up their ancestry
- if (isRootNodeForBindingContext)
- ko.storedBindingContextForNode(node, bindingContextInstance);
-
- // Use evaluatedBindings if given, otherwise fall back on asking the bindings provider to give us some bindings
- var evaluatedBindings = (typeof bindings == "function") ? bindings() : bindings;
- parsedBindings = evaluatedBindings || ko.bindingProvider['instance']['getBindings'](node, bindingContextInstance);
-
- if (parsedBindings) {
- // First run all the inits, so bindings can register for notification on changes
- if (initPhase === 0) {
- initPhase = 1;
- for (var bindingKey in parsedBindings) {
- var binding = ko.bindingHandlers[bindingKey];
- if (binding && node.nodeType === 8)
- validateThatBindingIsAllowedForVirtualElements(bindingKey);
-
- if (binding && typeof binding["init"] == "function") {
- var handlerInitFn = binding["init"];
- var initResult = handlerInitFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance);
-
- // If this binding handler claims to control descendant bindings, make a note of this
- if (initResult && initResult['controlsDescendantBindings']) {
- if (bindingHandlerThatControlsDescendantBindings !== undefined)
- throw new Error("Multiple bindings (" + bindingHandlerThatControlsDescendantBindings + " and " + bindingKey + ") are trying to control descendant bindings of the same element. You cannot use these bindings together on the same element.");
- bindingHandlerThatControlsDescendantBindings = bindingKey;
- }
- }
- }
- initPhase = 2;
- }
-
- // ... then run all the updates, which might trigger changes even on the first evaluation
- if (initPhase === 2) {
- for (var bindingKey in parsedBindings) {
- var binding = ko.bindingHandlers[bindingKey];
- if (binding && typeof binding["update"] == "function") {
- var handlerUpdateFn = binding["update"];
- handlerUpdateFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance);
- }
- }
- }
- }
- },
- null,
- { 'disposeWhenNodeIsRemoved' : node }
- );
-
- return {
- shouldBindDescendants: bindingHandlerThatControlsDescendantBindings === undefined
- };
- };
-
- var storedBindingContextDomDataKey = "__ko_bindingContext__";
- ko.storedBindingContextForNode = function (node, bindingContext) {
- if (arguments.length == 2)
- ko.utils.domData.set(node, storedBindingContextDomDataKey, bindingContext);
- else
- return ko.utils.domData.get(node, storedBindingContextDomDataKey);
- }
-
- ko.applyBindingsToNode = function (node, bindings, viewModel) {
- if (node.nodeType === 1) // If it's an element, workaround IE <= 8 HTML parsing weirdness
- ko.virtualElements.normaliseVirtualElementDomStructure(node);
- return applyBindingsToNodeInternal(node, bindings, viewModel, true);
- };
-
- ko.applyBindingsToDescendants = function(viewModel, rootNode) {
- if (rootNode.nodeType === 1)
- applyBindingsToDescendantsInternal(viewModel, rootNode);
- };
-
- ko.applyBindings = function (viewModel, rootNode) {
- if (rootNode && (rootNode.nodeType !== 1) && (rootNode.nodeType !== 8))
- throw new Error("ko.applyBindings: first parameter should be your view model; second parameter should be a DOM node");
- rootNode = rootNode || window.document.body; // Make "rootNode" parameter optional
-
- applyBindingsToNodeAndDescendantsInternal(viewModel, rootNode, true);
- };
-
- // Retrieving binding context from arbitrary nodes
- ko.contextFor = function(node) {
- // We can only do something meaningful for elements and comment nodes (in particular, not text nodes, as IE can't store domdata for them)
- switch (node.nodeType) {
- case 1:
- case 8:
- var context = ko.storedBindingContextForNode(node);
- if (context) return context;
- if (node.parentNode) return ko.contextFor(node.parentNode);
- break;
- }
- return undefined;
- };
- ko.dataFor = function(node) {
- var context = ko.contextFor(node);
- return context ? context['$data'] : undefined;
- };
-
- ko.exportSymbol('ko.bindingHandlers', ko.bindingHandlers);
- ko.exportSymbol('ko.applyBindings', ko.applyBindings);
- ko.exportSymbol('ko.applyBindingsToDescendants', ko.applyBindingsToDescendants);
- ko.exportSymbol('ko.applyBindingsToNode', ko.applyBindingsToNode);
- ko.exportSymbol('ko.contextFor', ko.contextFor);
- ko.exportSymbol('ko.dataFor', ko.dataFor);
-})();// For certain common events (currently just 'click'), allow a simplified data-binding syntax
-// e.g. click:handler instead of the usual full-length event:{click:handler}
-var eventHandlersWithShortcuts = ['click'];
-ko.utils.arrayForEach(eventHandlersWithShortcuts, function(eventName) {
- ko.bindingHandlers[eventName] = {
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel) {
- var newValueAccessor = function () {
- var result = {};
- result[eventName] = valueAccessor();
- return result;
- };
- return ko.bindingHandlers['event']['init'].call(this, element, newValueAccessor, allBindingsAccessor, viewModel);
- }
- }
-});
-
-
-ko.bindingHandlers['event'] = {
- 'init' : function (element, valueAccessor, allBindingsAccessor, viewModel) {
- var eventsToHandle = valueAccessor() || {};
- for(var eventNameOutsideClosure in eventsToHandle) {
- (function() {
- var eventName = eventNameOutsideClosure; // Separate variable to be captured by event handler closure
- if (typeof eventName == "string") {
- ko.utils.registerEventHandler(element, eventName, function (event) {
- var handlerReturnValue;
- var handlerFunction = valueAccessor()[eventName];
- if (!handlerFunction)
- return;
- var allBindings = allBindingsAccessor();
-
- try {
- // Take all the event args, and prefix with the viewmodel
- var argsForHandler = ko.utils.makeArray(arguments);
- argsForHandler.unshift(viewModel);
- handlerReturnValue = handlerFunction.apply(viewModel, argsForHandler);
- } finally {
- if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.
- if (event.preventDefault)
- event.preventDefault();
- else
- event.returnValue = false;
- }
- }
-
- var bubble = allBindings[eventName + 'Bubble'] !== false;
- if (!bubble) {
- event.cancelBubble = true;
- if (event.stopPropagation)
- event.stopPropagation();
- }
- });
- }
- })();
- }
- }
-};
-
-ko.bindingHandlers['submit'] = {
- 'init': function (element, valueAccessor, allBindingsAccessor, viewModel) {
- if (typeof valueAccessor() != "function")
- throw new Error("The value for a submit binding must be a function");
- ko.utils.registerEventHandler(element, "submit", function (event) {
- var handlerReturnValue;
- var value = valueAccessor();
- try { handlerReturnValue = value.call(viewModel, element); }
- finally {
- if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.
- if (event.preventDefault)
- event.preventDefault();
- else
- event.returnValue = false;
- }
- }
- });
- }
-};
-
-ko.bindingHandlers['visible'] = {
- 'update': function (element, valueAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor());
- var isCurrentlyVisible = !(element.style.display == "none");
- if (value && !isCurrentlyVisible)
- element.style.display = "";
- else if ((!value) && isCurrentlyVisible)
- element.style.display = "none";
- }
-}
-
-ko.bindingHandlers['enable'] = {
- 'update': function (element, valueAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor());
- if (value && element.disabled)
- element.removeAttribute("disabled");
- else if ((!value) && (!element.disabled))
- element.disabled = true;
- }
-};
-
-ko.bindingHandlers['disable'] = {
- 'update': function (element, valueAccessor) {
- ko.bindingHandlers['enable']['update'](element, function() { return !ko.utils.unwrapObservable(valueAccessor()) });
- }
-};
-
-function ensureDropdownSelectionIsConsistentWithModelValue(element, modelValue, preferModelValue) {
- if (preferModelValue) {
- if (modelValue !== ko.selectExtensions.readValue(element))
- ko.selectExtensions.writeValue(element, modelValue);
- }
-
- // No matter which direction we're syncing in, we want the end result to be equality between dropdown value and model value.
- // If they aren't equal, either we prefer the dropdown value, or the model value couldn't be represented, so either way,
- // change the model value to match the dropdown.
- if (modelValue !== ko.selectExtensions.readValue(element))
- ko.utils.triggerEvent(element, "change");
-};
-
-ko.bindingHandlers['value'] = {
- 'init': function (element, valueAccessor, allBindingsAccessor) {
- // Always catch "change" event; possibly other events too if asked
- var eventsToCatch = ["change"];
- var requestedEventsToCatch = allBindingsAccessor()["valueUpdate"];
- if (requestedEventsToCatch) {
- if (typeof requestedEventsToCatch == "string") // Allow both individual event names, and arrays of event names
- requestedEventsToCatch = [requestedEventsToCatch];
- ko.utils.arrayPushAll(eventsToCatch, requestedEventsToCatch);
- eventsToCatch = ko.utils.arrayGetDistinctValues(eventsToCatch);
- }
-
- ko.utils.arrayForEach(eventsToCatch, function(eventName) {
- // The syntax "after<eventname>" means "run the handler asynchronously after the event"
- // This is useful, for example, to catch "keydown" events after the browser has updated the control
- // (otherwise, ko.selectExtensions.readValue(this) will receive the control's value *before* the key event)
- var handleEventAsynchronously = false;
- if (ko.utils.stringStartsWith(eventName, "after")) {
- handleEventAsynchronously = true;
- eventName = eventName.substring("after".length);
- }
- var runEventHandler = handleEventAsynchronously ? function(handler) { setTimeout(handler, 0) }
- : function(handler) { handler() };
-
- ko.utils.registerEventHandler(element, eventName, function () {
- runEventHandler(function() {
- var modelValue = valueAccessor();
- var elementValue = ko.selectExtensions.readValue(element);
- if (ko.isWriteableObservable(modelValue))
- modelValue(elementValue);
- else {
- var allBindings = allBindingsAccessor();
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['value'])
- allBindings['_ko_property_writers']['value'](elementValue);
- }
- });
- });
- });
- },
- 'update': function (element, valueAccessor) {
- var newValue = ko.utils.unwrapObservable(valueAccessor());
- var elementValue = ko.selectExtensions.readValue(element);
- var valueHasChanged = (newValue != elementValue);
-
- // JavaScript's 0 == "" behavious is unfortunate here as it prevents writing 0 to an empty text box (loose equality suggests the values are the same).
- // We don't want to do a strict equality comparison as that is more confusing for developers in certain cases, so we specifically special case 0 != "" here.
- if ((newValue === 0) && (elementValue !== 0) && (elementValue !== "0"))
- valueHasChanged = true;
-
- if (valueHasChanged) {
- var applyValueAction = function () { ko.selectExtensions.writeValue(element, newValue); };
- applyValueAction();
-
- // Workaround for IE6 bug: It won't reliably apply values to SELECT nodes during the same execution thread
- // right after you've changed the set of OPTION nodes on it. So for that node type, we'll schedule a second thread
- // to apply the value as well.
- var alsoApplyAsynchronously = element.tagName == "SELECT";
- if (alsoApplyAsynchronously)
- setTimeout(applyValueAction, 0);
- }
-
- // If you try to set a model value that can't be represented in an already-populated dropdown, reject that change,
- // because you're not allowed to have a model value that disagrees with a visible UI selection.
- if ((element.tagName == "SELECT") && (element.length > 0))
- ensureDropdownSelectionIsConsistentWithModelValue(element, newValue, /* preferModelValue */ false);
- }
-};
-
-ko.bindingHandlers['options'] = {
- 'update': function (element, valueAccessor, allBindingsAccessor) {
- if (element.tagName != "SELECT")
- throw new Error("options binding applies only to SELECT elements");
-
- var selectWasPreviouslyEmpty = element.length == 0;
- var previousSelectedValues = ko.utils.arrayMap(ko.utils.arrayFilter(element.childNodes, function (node) {
- return node.tagName && node.tagName == "OPTION" && node.selected;
- }), function (node) {
- return ko.selectExtensions.readValue(node) || node.innerText || node.textContent;
- });
- var previousScrollTop = element.scrollTop;
- element.scrollTop = 0; // Workaround for a Chrome rendering bug. Note that we restore the scroll position later. (https://github.com/SteveSanderson/knockout/issues/215)
-
- var value = ko.utils.unwrapObservable(valueAccessor());
- var selectedValue = element.value;
-
- // Remove all existing <option>s.
- // Need to use .remove() rather than .removeChild() for <option>s otherwise IE behaves oddly (https://github.com/SteveSanderson/knockout/issues/134)
- while (element.length > 0) {
- ko.cleanNode(element.options[0]);
- element.remove(0);
- }
-
- if (value) {
- var allBindings = allBindingsAccessor();
- if (typeof value.length != "number")
- value = [value];
- if (allBindings['optionsCaption']) {
- var option = document.createElement("OPTION");
- ko.utils.setHtml(option, allBindings['optionsCaption']);
- ko.selectExtensions.writeValue(option, undefined);
- element.appendChild(option);
- }
- for (var i = 0, j = value.length; i < j; i++) {
- var option = document.createElement("OPTION");
-
- // Apply a value to the option element
- var optionValue = typeof allBindings['optionsValue'] == "string" ? value[i][allBindings['optionsValue']] : value[i];
- optionValue = ko.utils.unwrapObservable(optionValue);
- ko.selectExtensions.writeValue(option, optionValue);
-
- // Apply some text to the option element
- var optionsTextValue = allBindings['optionsText'];
- var optionText;
- if (typeof optionsTextValue == "function")
- optionText = optionsTextValue(value[i]); // Given a function; run it against the data value
- else if (typeof optionsTextValue == "string")
- optionText = value[i][optionsTextValue]; // Given a string; treat it as a property name on the data value
- else
- optionText = optionValue; // Given no optionsText arg; use the data value itself
- if ((optionText === null) || (optionText === undefined))
- optionText = "";
-
- ko.utils.setTextContent(option, optionText);
-
- element.appendChild(option);
- }
-
- // IE6 doesn't like us to assign selection to OPTION nodes before they're added to the document.
- // That's why we first added them without selection. Now it's time to set the selection.
- var newOptions = element.getElementsByTagName("OPTION");
- var countSelectionsRetained = 0;
- for (var i = 0, j = newOptions.length; i < j; i++) {
- if (ko.utils.arrayIndexOf(previousSelectedValues, ko.selectExtensions.readValue(newOptions[i])) >= 0) {
- ko.utils.setOptionNodeSelectionState(newOptions[i], true);
- countSelectionsRetained++;
- }
- }
-
- if (previousScrollTop)
- element.scrollTop = previousScrollTop;
-
- if (selectWasPreviouslyEmpty && ('value' in allBindings)) {
- // Ensure consistency between model value and selected option.
- // If the dropdown is being populated for the first time here (or was otherwise previously empty),
- // the dropdown selection state is meaningless, so we preserve the model value.
- ensureDropdownSelectionIsConsistentWithModelValue(element, ko.utils.unwrapObservable(allBindings['value']), /* preferModelValue */ true);
- }
- }
- }
-};
-ko.bindingHandlers['options'].optionValueDomDataKey = '__ko.optionValueDomData__';
-
-ko.bindingHandlers['selectedOptions'] = {
- getSelectedValuesFromSelectNode: function (selectNode) {
- var result = [];
- var nodes = selectNode.childNodes;
- for (var i = 0, j = nodes.length; i < j; i++) {
- var node = nodes[i];
- if ((node.tagName == "OPTION") && node.selected)
- result.push(ko.selectExtensions.readValue(node));
- }
- return result;
- },
- 'init': function (element, valueAccessor, allBindingsAccessor) {
- ko.utils.registerEventHandler(element, "change", function () {
- var value = valueAccessor();
- if (ko.isWriteableObservable(value))
- value(ko.bindingHandlers['selectedOptions'].getSelectedValuesFromSelectNode(this));
- else {
- var allBindings = allBindingsAccessor();
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['value'])
- allBindings['_ko_property_writers']['value'](ko.bindingHandlers['selectedOptions'].getSelectedValuesFromSelectNode(this));
- }
- });
- },
- 'update': function (element, valueAccessor) {
- if (element.tagName != "SELECT")
- throw new Error("values binding applies only to SELECT elements");
-
- var newValue = ko.utils.unwrapObservable(valueAccessor());
- if (newValue && typeof newValue.length == "number") {
- var nodes = element.childNodes;
- for (var i = 0, j = nodes.length; i < j; i++) {
- var node = nodes[i];
- if (node.tagName == "OPTION")
- ko.utils.setOptionNodeSelectionState(node, ko.utils.arrayIndexOf(newValue, ko.selectExtensions.readValue(node)) >= 0);
- }
- }
- }
-};
-
-ko.bindingHandlers['text'] = {
- 'update': function (element, valueAccessor) {
- ko.utils.setTextContent(element, valueAccessor());
- }
-};
-
-ko.bindingHandlers['html'] = {
- 'init': function() {
- // Prevent binding on the dynamically-injected HTML (as developers are unlikely to expect that, and it has security implications)
- return { 'controlsDescendantBindings': true };
- },
- 'update': function (element, valueAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor());
- ko.utils.setHtml(element, value);
- }
-};
-
-ko.bindingHandlers['css'] = {
- 'update': function (element, valueAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor() || {});
- for (var className in value) {
- if (typeof className == "string") {
- var shouldHaveClass = ko.utils.unwrapObservable(value[className]);
- ko.utils.toggleDomNodeCssClass(element, className, shouldHaveClass);
- }
- }
- }
-};
-
-ko.bindingHandlers['style'] = {
- 'update': function (element, valueAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor() || {});
- for (var styleName in value) {
- if (typeof styleName == "string") {
- var styleValue = ko.utils.unwrapObservable(value[styleName]);
- element.style[styleName] = styleValue || ""; // Empty string removes the value, whereas null/undefined have no effect
- }
- }
- }
-};
-
-ko.bindingHandlers['uniqueName'] = {
- 'init': function (element, valueAccessor) {
- if (valueAccessor()) {
- element.name = "ko_unique_" + (++ko.bindingHandlers['uniqueName'].currentIndex);
-
- // Workaround IE 6/7 issue
- // - https://github.com/SteveSanderson/knockout/issues/197
- // - http://www.matts411.com/post/setting_the_name_attribute_in_ie_dom/
- if (ko.utils.isIe6 || ko.utils.isIe7)
- element.mergeAttributes(document.createElement("<input name='" + element.name + "'/>"), false);
- }
- }
-};
-ko.bindingHandlers['uniqueName'].currentIndex = 0;
-
-ko.bindingHandlers['checked'] = {
- 'init': function (element, valueAccessor, allBindingsAccessor) {
- var updateHandler = function() {
- var valueToWrite;
- if (element.type == "checkbox") {
- valueToWrite = element.checked;
- } else if ((element.type == "radio") && (element.checked)) {
- valueToWrite = element.value;
- } else {
- return; // "checked" binding only responds to checkboxes and selected radio buttons
- }
-
- var modelValue = valueAccessor();
- if ((element.type == "checkbox") && (ko.utils.unwrapObservable(modelValue) instanceof Array)) {
- // For checkboxes bound to an array, we add/remove the checkbox value to that array
- // This works for both observable and non-observable arrays
- var existingEntryIndex = ko.utils.arrayIndexOf(ko.utils.unwrapObservable(modelValue), element.value);
- if (element.checked && (existingEntryIndex < 0))
- modelValue.push(element.value);
- else if ((!element.checked) && (existingEntryIndex >= 0))
- modelValue.splice(existingEntryIndex, 1);
- } else if (ko.isWriteableObservable(modelValue)) {
- if (modelValue() !== valueToWrite) { // Suppress repeated events when there's nothing new to notify (some browsers raise them)
- modelValue(valueToWrite);
- }
- } else {
- var allBindings = allBindingsAccessor();
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['checked']) {
- allBindings['_ko_property_writers']['checked'](valueToWrite);
- }
- }
- };
- ko.utils.registerEventHandler(element, "click", updateHandler);
-
- // IE 6 won't allow radio buttons to be selected unless they have a name
- if ((element.type == "radio") && !element.name)
- ko.bindingHandlers['uniqueName']['init'](element, function() { return true });
- },
- 'update': function (element, valueAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor());
-
- if (element.type == "checkbox") {
- if (value instanceof Array) {
- // When bound to an array, the checkbox being checked represents its value being present in that array
- element.checked = ko.utils.arrayIndexOf(value, element.value) >= 0;
- } else {
- // When bound to anything other value (not an array), the checkbox being checked represents the value being trueish
- element.checked = value;
- }
- } else if (element.type == "radio") {
- element.checked = (element.value == value);
- }
- }
-};
-
-ko.bindingHandlers['attr'] = {
- 'update': function(element, valueAccessor, allBindingsAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor()) || {};
- for (var attrName in value) {
- if (typeof attrName == "string") {
- var attrValue = ko.utils.unwrapObservable(value[attrName]);
-
- // To cover cases like "attr: { checked:someProp }", we want to remove the attribute entirely
- // when someProp is a "no value"-like value (strictly null, false, or undefined)
- // (because the absence of the "checked" attr is how to mark an element as not checked, etc.)
- if ((attrValue === false) || (attrValue === null) || (attrValue === undefined))
- element.removeAttribute(attrName);
- else
- element.setAttribute(attrName, attrValue.toString());
- }
- }
- }
-};
-
-ko.bindingHandlers['hasfocus'] = {
- 'init': function(element, valueAccessor, allBindingsAccessor) {
- var writeValue = function(valueToWrite) {
- var modelValue = valueAccessor();
- if (valueToWrite == ko.utils.unwrapObservable(modelValue))
- return;
-
- if (ko.isWriteableObservable(modelValue))
- modelValue(valueToWrite);
- else {
- var allBindings = allBindingsAccessor();
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['hasfocus']) {
- allBindings['_ko_property_writers']['hasfocus'](valueToWrite);
- }
- }
- };
- ko.utils.registerEventHandler(element, "focus", function() { writeValue(true) });
- ko.utils.registerEventHandler(element, "focusin", function() { writeValue(true) }); // For IE
- ko.utils.registerEventHandler(element, "blur", function() { writeValue(false) });
- ko.utils.registerEventHandler(element, "focusout", function() { writeValue(false) }); // For IE
- },
- 'update': function(element, valueAccessor) {
- var value = ko.utils.unwrapObservable(valueAccessor());
- value ? element.focus() : element.blur();
- ko.utils.triggerEvent(element, value ? "focusin" : "focusout"); // For IE, which doesn't reliably fire "focus" or "blur" events synchronously
- }
-};
-
-// "with: someExpression" is equivalent to "template: { if: someExpression, data: someExpression }"
-ko.bindingHandlers['with'] = {
- makeTemplateValueAccessor: function(valueAccessor) {
- return function() { var value = valueAccessor(); return { 'if': value, 'data': value, 'templateEngine': ko.nativeTemplateEngine.instance } };
- },
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['with'].makeTemplateValueAccessor(valueAccessor));
- },
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['with'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);
- }
-};
-ko.jsonExpressionRewriting.bindingRewriteValidators['with'] = false; // Can't rewrite control flow bindings
-ko.virtualElements.allowedBindings['with'] = true;
-
-// "if: someExpression" is equivalent to "template: { if: someExpression }"
-ko.bindingHandlers['if'] = {
- makeTemplateValueAccessor: function(valueAccessor) {
- return function() { return { 'if': valueAccessor(), 'templateEngine': ko.nativeTemplateEngine.instance } };
- },
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['if'].makeTemplateValueAccessor(valueAccessor));
- },
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['if'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);
- }
-};
-ko.jsonExpressionRewriting.bindingRewriteValidators['if'] = false; // Can't rewrite control flow bindings
-ko.virtualElements.allowedBindings['if'] = true;
-
-// "ifnot: someExpression" is equivalent to "template: { ifnot: someExpression }"
-ko.bindingHandlers['ifnot'] = {
- makeTemplateValueAccessor: function(valueAccessor) {
- return function() { return { 'ifnot': valueAccessor(), 'templateEngine': ko.nativeTemplateEngine.instance } };
- },
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['ifnot'].makeTemplateValueAccessor(valueAccessor));
- },
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['ifnot'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);
- }
-};
-ko.jsonExpressionRewriting.bindingRewriteValidators['ifnot'] = false; // Can't rewrite control flow bindings
-ko.virtualElements.allowedBindings['ifnot'] = true;
-
-// "foreach: someExpression" is equivalent to "template: { foreach: someExpression }"
-// "foreach: { data: someExpression, afterAdd: myfn }" is equivalent to "template: { foreach: someExpression, afterAdd: myfn }"
-ko.bindingHandlers['foreach'] = {
- makeTemplateValueAccessor: function(valueAccessor) {
- return function() {
- var bindingValue = ko.utils.unwrapObservable(valueAccessor());
-
- // If bindingValue is the array, just pass it on its own
- if ((!bindingValue) || typeof bindingValue.length == "number")
- return { 'foreach': bindingValue, 'templateEngine': ko.nativeTemplateEngine.instance };
-
- // If bindingValue.data is the array, preserve all relevant options
- return {
- 'foreach': bindingValue['data'],
- 'includeDestroyed': bindingValue['includeDestroyed'],
- 'afterAdd': bindingValue['afterAdd'],
- 'beforeRemove': bindingValue['beforeRemove'],
- 'afterRender': bindingValue['afterRender'],
- 'templateEngine': ko.nativeTemplateEngine.instance
- };
- };
- },
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor));
- },
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);
- }
-};
-ko.jsonExpressionRewriting.bindingRewriteValidators['foreach'] = false; // Can't rewrite control flow bindings
-ko.virtualElements.allowedBindings['foreach'] = true;
-ko.exportSymbol('ko.allowedVirtualElementBindings', ko.virtualElements.allowedBindings);// If you want to make a custom template engine,
-//
-// [1] Inherit from this class (like ko.nativeTemplateEngine does)
-// [2] Override 'renderTemplateSource', supplying a function with this signature:
-//
-// function (templateSource, bindingContext, options) {
-// // - templateSource.text() is the text of the template you should render
-// // - bindingContext.$data is the data you should pass into the template
-// // - you might also want to make bindingContext.$parent, bindingContext.$parents,
-// // and bindingContext.$root available in the template too
-// // - options gives you access to any other properties set on "data-bind: { template: options }"
-// //
-// // Return value: an array of DOM nodes
-// }
-//
-// [3] Override 'createJavaScriptEvaluatorBlock', supplying a function with this signature:
-//
-// function (script) {
-// // Return value: Whatever syntax means "Evaluate the JavaScript statement 'script' and output the result"
-// // For example, the jquery.tmpl template engine converts 'someScript' to '${ someScript }'
-// }
-//
-// This is only necessary if you want to allow data-bind attributes to reference arbitrary template variables.
-// If you don't want to allow that, you can set the property 'allowTemplateRewriting' to false (like ko.nativeTemplateEngine does)
-// and then you don't need to override 'createJavaScriptEvaluatorBlock'.
-
-ko.templateEngine = function () { };
-
-ko.templateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options) {
- throw "Override renderTemplateSource";
-};
-
-ko.templateEngine.prototype['createJavaScriptEvaluatorBlock'] = function (script) {
- throw "Override createJavaScriptEvaluatorBlock";
-};
-
-ko.templateEngine.prototype['makeTemplateSource'] = function(template) {
- // Named template
- if (typeof template == "string") {
- var elem = document.getElementById(template);
- if (!elem)
- throw new Error("Cannot find template with ID " + template);
- return new ko.templateSources.domElement(elem);
- } else if ((template.nodeType == 1) || (template.nodeType == 8)) {
- // Anonymous template
- return new ko.templateSources.anonymousTemplate(template);
- } else
- throw new Error("Unknown template type: " + template);
-};
-
-ko.templateEngine.prototype['renderTemplate'] = function (template, bindingContext, options) {
- var templateSource = this['makeTemplateSource'](template);
- return this['renderTemplateSource'](templateSource, bindingContext, options);
-};
-
-ko.templateEngine.prototype['isTemplateRewritten'] = function (template) {
- // Skip rewriting if requested
- if (this['allowTemplateRewriting'] === false)
- return true;
-
- // Perf optimisation - see below
- if (this.knownRewrittenTemplates && this.knownRewrittenTemplates[template])
- return true;
-
- return this['makeTemplateSource'](template)['data']("isRewritten");
-};
-
-ko.templateEngine.prototype['rewriteTemplate'] = function (template, rewriterCallback) {
- var templateSource = this['makeTemplateSource'](template);
- var rewritten = rewriterCallback(templateSource['text']());
- templateSource['text'](rewritten);
- templateSource['data']("isRewritten", true);
-
- // Perf optimisation - for named templates, track which ones have been rewritten so we can
- // answer 'isTemplateRewritten' *without* having to use getElementById (which is slow on IE < 8)
- if (typeof template == "string") {
- this.knownRewrittenTemplates = this.knownRewrittenTemplates || {};
- this.knownRewrittenTemplates[template] = true;
- }
-};
-
-ko.exportSymbol('ko.templateEngine', ko.templateEngine);
-ko.templateRewriting = (function () {
- var memoizeDataBindingAttributeSyntaxRegex = /(<[a-z]+\d*(\s+(?!data-bind=)[a-z0-9\-]+(=(\"[^\"]*\"|\'[^\']*\'))?)*\s+)data-bind=(["'])([\s\S]*?)\5/gi;
- var memoizeVirtualContainerBindingSyntaxRegex = /<!--\s*ko\b\s*([\s\S]*?)\s*-->/g;
-
- function validateDataBindValuesForRewriting(keyValueArray) {
- var allValidators = ko.jsonExpressionRewriting.bindingRewriteValidators;
- for (var i = 0; i < keyValueArray.length; i++) {
- var key = keyValueArray[i]['key'];
- if (allValidators.hasOwnProperty(key)) {
- var validator = allValidators[key];
-
- if (typeof validator === "function") {
- var possibleErrorMessage = validator(keyValueArray[i]['value']);
- if (possibleErrorMessage)
- throw new Error(possibleErrorMessage);
- } else if (!validator) {
- throw new Error("This template engine does not support the '" + key + "' binding within its templates");
- }
- }
- }
- }
-
- function constructMemoizedTagReplacement(dataBindAttributeValue, tagToRetain, templateEngine) {
- var dataBindKeyValueArray = ko.jsonExpressionRewriting.parseObjectLiteral(dataBindAttributeValue);
- validateDataBindValuesForRewriting(dataBindKeyValueArray);
- var rewrittenDataBindAttributeValue = ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson(dataBindKeyValueArray);
-
- // For no obvious reason, Opera fails to evaluate rewrittenDataBindAttributeValue unless it's wrapped in an additional
- // anonymous function, even though Opera's built-in debugger can evaluate it anyway. No other browser requires this
- // extra indirection.
- var applyBindingsToNextSiblingScript = "ko.templateRewriting.applyMemoizedBindingsToNextSibling(function() { \
- return (function() { return { " + rewrittenDataBindAttributeValue + " } })() \
- })";
- return templateEngine['createJavaScriptEvaluatorBlock'](applyBindingsToNextSiblingScript) + tagToRetain;
- }
-
- return {
- ensureTemplateIsRewritten: function (template, templateEngine) {
- if (!templateEngine['isTemplateRewritten'](template))
- templateEngine['rewriteTemplate'](template, function (htmlString) {
- return ko.templateRewriting.memoizeBindingAttributeSyntax(htmlString, templateEngine);
- });
- },
-
- memoizeBindingAttributeSyntax: function (htmlString, templateEngine) {
- return htmlString.replace(memoizeDataBindingAttributeSyntaxRegex, function () {
- return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[6], /* tagToRetain: */ arguments[1], templateEngine);
- }).replace(memoizeVirtualContainerBindingSyntaxRegex, function() {
- return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[1], /* tagToRetain: */ "<!-- ko -->", templateEngine);
- });
- },
-
- applyMemoizedBindingsToNextSibling: function (bindings) {
- return ko.memoization.memoize(function (domNode, bindingContext) {
- if (domNode.nextSibling)
- ko.applyBindingsToNode(domNode.nextSibling, bindings, bindingContext);
- });
- }
- }
-})();
-
-ko.exportSymbol('ko.templateRewriting', ko.templateRewriting);
-ko.exportSymbol('ko.templateRewriting.applyMemoizedBindingsToNextSibling', ko.templateRewriting.applyMemoizedBindingsToNextSibling); // Exported only because it has to be referenced by string lookup from within rewritten template
-(function() {
- // A template source represents a read/write way of accessing a template. This is to eliminate the need for template loading/saving
- // logic to be duplicated in every template engine (and means they can all work with anonymous templates, etc.)
- //
- // Two are provided by default:
- // 1. ko.templateSources.domElement - reads/writes the text content of an arbitrary DOM element
- // 2. ko.templateSources.anonymousElement - uses ko.utils.domData to read/write text *associated* with the DOM element, but
- // without reading/writing the actual element text content, since it will be overwritten
- // with the rendered template output.
- // You can implement your own template source if you want to fetch/store templates somewhere other than in DOM elements.
- // Template sources need to have the following functions:
- // text() - returns the template text from your storage location
- // text(value) - writes the supplied template text to your storage location
- // data(key) - reads values stored using data(key, value) - see below
- // data(key, value) - associates "value" with this template and the key "key". Is used to store information like "isRewritten".
- //
- // Once you've implemented a templateSource, make your template engine use it by subclassing whatever template engine you were
- // using and overriding "makeTemplateSource" to return an instance of your custom template source.
-
- ko.templateSources = {};
-
- // ---- ko.templateSources.domElement -----
-
- ko.templateSources.domElement = function(element) {
- this.domElement = element;
- }
-
- ko.templateSources.domElement.prototype['text'] = function(/* valueToWrite */) {
- if (arguments.length == 0) {
- return this.domElement.tagName.toLowerCase() == "script" ? this.domElement.text : this.domElement.innerHTML;
- } else {
- var valueToWrite = arguments[0];
- if (this.domElement.tagName.toLowerCase() == "script")
- this.domElement.text = valueToWrite;
- else
- ko.utils.setHtml(this.domElement, valueToWrite);
- }
- };
-
- ko.templateSources.domElement.prototype['data'] = function(key /*, valueToWrite */) {
- if (arguments.length === 1) {
- return ko.utils.domData.get(this.domElement, "templateSourceData_" + key);
- } else {
- ko.utils.domData.set(this.domElement, "templateSourceData_" + key, arguments[1]);
- }
- };
-
- // ---- ko.templateSources.anonymousTemplate -----
-
- var anonymousTemplatesDomDataKey = "__ko_anon_template__";
- ko.templateSources.anonymousTemplate = function(element) {
- this.domElement = element;
- }
- ko.templateSources.anonymousTemplate.prototype = new ko.templateSources.domElement();
- ko.templateSources.anonymousTemplate.prototype['text'] = function(/* valueToWrite */) {
- if (arguments.length == 0) {
- return ko.utils.domData.get(this.domElement, anonymousTemplatesDomDataKey);
- } else {
- var valueToWrite = arguments[0];
- ko.utils.domData.set(this.domElement, anonymousTemplatesDomDataKey, valueToWrite);
- }
- };
-
- ko.exportSymbol('ko.templateSources', ko.templateSources);
- ko.exportSymbol('ko.templateSources.domElement', ko.templateSources.domElement);
- ko.exportSymbol('ko.templateSources.anonymousTemplate', ko.templateSources.anonymousTemplate);
-})();
-(function () {
- var _templateEngine;
- ko.setTemplateEngine = function (templateEngine) {
- if ((templateEngine != undefined) && !(templateEngine instanceof ko.templateEngine))
- throw "templateEngine must inherit from ko.templateEngine";
- _templateEngine = templateEngine;
- }
-
- function invokeForEachNodeOrCommentInParent(nodeArray, parent, action) {
- for (var i = 0; node = nodeArray[i]; i++) {
- if (node.parentNode !== parent) // Skip anything that has been removed during binding
- continue;
- if ((node.nodeType === 1) || (node.nodeType === 8))
- action(node);
- }
- }
-
- ko.activateBindingsOnTemplateRenderedNodes = function(nodeArray, bindingContext) {
- // To be used on any nodes that have been rendered by a template and have been inserted into some parent element.
- // Safely iterates through nodeArray (being tolerant of any changes made to it during binding, e.g.,
- // if a binding inserts siblings), and for each:
- // (1) Does a regular "applyBindings" to associate bindingContext with this node and to activate any non-memoized bindings
- // (2) Unmemoizes any memos in the DOM subtree (e.g., to activate bindings that had been memoized during template rewriting)
-
- var nodeArrayClone = ko.utils.arrayPushAll([], nodeArray); // So we can tolerate insertions/deletions during binding
- var commonParentElement = (nodeArray.length > 0) ? nodeArray[0].parentNode : null; // All items must be in the same parent, so this is OK
-
- // Need to applyBindings *before* unmemoziation, because unmemoization might introduce extra nodes (that we don't want to re-bind)
- // whereas a regular applyBindings won't introduce new memoized nodes
-
- invokeForEachNodeOrCommentInParent(nodeArrayClone, commonParentElement, function(node) {
- ko.applyBindings(bindingContext, node);
- });
- invokeForEachNodeOrCommentInParent(nodeArrayClone, commonParentElement, function(node) {
- ko.memoization.unmemoizeDomNodeAndDescendants(node, [bindingContext]);
- });
- }
-
- function getFirstNodeFromPossibleArray(nodeOrNodeArray) {
- return nodeOrNodeArray.nodeType ? nodeOrNodeArray
- : nodeOrNodeArray.length > 0 ? nodeOrNodeArray[0]
- : null;
- }
-
- function executeTemplate(targetNodeOrNodeArray, renderMode, template, bindingContext, options) {
- options = options || {};
- var templateEngineToUse = (options['templateEngine'] || _templateEngine);
- ko.templateRewriting.ensureTemplateIsRewritten(template, templateEngineToUse);
- var renderedNodesArray = templateEngineToUse['renderTemplate'](template, bindingContext, options);
-
- // Loosely check result is an array of DOM nodes
- if ((typeof renderedNodesArray.length != "number") || (renderedNodesArray.length > 0 && typeof renderedNodesArray[0].nodeType != "number"))
- throw "Template engine must return an array of DOM nodes";
-
- var haveAddedNodesToParent = false;
- switch (renderMode) {
- case "replaceChildren":
- ko.virtualElements.setDomNodeChildren(targetNodeOrNodeArray, renderedNodesArray);
- haveAddedNodesToParent = true;
- break;
- case "replaceNode":
- ko.utils.replaceDomNodes(targetNodeOrNodeArray, renderedNodesArray);
- haveAddedNodesToParent = true;
- break;
- case "ignoreTargetNode": break;
- default:
- throw new Error("Unknown renderMode: " + renderMode);
- }
-
- if (haveAddedNodesToParent) {
- ko.activateBindingsOnTemplateRenderedNodes(renderedNodesArray, bindingContext);
- if (options['afterRender'])
- options['afterRender'](renderedNodesArray, bindingContext['$data']);
- }
-
- return renderedNodesArray;
- }
-
- ko.renderTemplate = function (template, dataOrBindingContext, options, targetNodeOrNodeArray, renderMode) {
- options = options || {};
- if ((options['templateEngine'] || _templateEngine) == undefined)
- throw "Set a template engine before calling renderTemplate";
- renderMode = renderMode || "replaceChildren";
-
- if (targetNodeOrNodeArray) {
- var firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
-
- var whenToDispose = function () { return (!firstTargetNode) || !ko.utils.domNodeIsAttachedToDocument(firstTargetNode); }; // Passive disposal (on next evaluation)
- var activelyDisposeWhenNodeIsRemoved = (firstTargetNode && renderMode == "replaceNode") ? firstTargetNode.parentNode : firstTargetNode;
-
- return new ko.dependentObservable( // So the DOM is automatically updated when any dependency changes
- function () {
- // Ensure we've got a proper binding context to work with
- var bindingContext = (dataOrBindingContext && (dataOrBindingContext instanceof ko.bindingContext))
- ? dataOrBindingContext
- : new ko.bindingContext(ko.utils.unwrapObservable(dataOrBindingContext));
-
- // Support selecting template as a function of the data being rendered
- var templateName = typeof(template) == 'function' ? template(bindingContext['$data']) : template;
-
- var renderedNodesArray = executeTemplate(targetNodeOrNodeArray, renderMode, templateName, bindingContext, options);
- if (renderMode == "replaceNode") {
- targetNodeOrNodeArray = renderedNodesArray;
- firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
- }
- },
- null,
- { 'disposeWhen': whenToDispose, 'disposeWhenNodeIsRemoved': activelyDisposeWhenNodeIsRemoved }
- );
- } else {
- // We don't yet have a DOM node to evaluate, so use a memo and render the template later when there is a DOM node
- return ko.memoization.memoize(function (domNode) {
- ko.renderTemplate(template, dataOrBindingContext, options, domNode, "replaceNode");
- });
- }
- };
-
- ko.renderTemplateForEach = function (template, arrayOrObservableArray, options, targetNode, parentBindingContext) {
- var createInnerBindingContext = function(arrayValue) {
- return parentBindingContext['createChildContext'](ko.utils.unwrapObservable(arrayValue));
- };
-
- // This will be called whenever setDomNodeChildrenFromArrayMapping has added nodes to targetNode
- var activateBindingsCallback = function(arrayValue, addedNodesArray) {
- var bindingContext = createInnerBindingContext(arrayValue);
- ko.activateBindingsOnTemplateRenderedNodes(addedNodesArray, bindingContext);
- if (options['afterRender'])
- options['afterRender'](addedNodesArray, bindingContext['$data']);
- };
-
- return new ko.dependentObservable(function () {
- var unwrappedArray = ko.utils.unwrapObservable(arrayOrObservableArray) || [];
- if (typeof unwrappedArray.length == "undefined") // Coerce single value into array
- unwrappedArray = [unwrappedArray];
-
- // Filter out any entries marked as destroyed
- var filteredArray = ko.utils.arrayFilter(unwrappedArray, function(item) {
- return options['includeDestroyed'] || item === undefined || item === null || !ko.utils.unwrapObservable(item['_destroy']);
- });
-
- ko.utils.setDomNodeChildrenFromArrayMapping(targetNode, filteredArray, function (arrayValue) {
- // Support selecting template as a function of the data being rendered
- var templateName = typeof(template) == 'function' ? template(arrayValue) : template;
- return executeTemplate(null, "ignoreTargetNode", templateName, createInnerBindingContext(arrayValue), options);
- }, options, activateBindingsCallback);
-
- }, null, { 'disposeWhenNodeIsRemoved': targetNode });
- };
-
- var templateSubscriptionDomDataKey = '__ko__templateSubscriptionDomDataKey__';
- function disposeOldSubscriptionAndStoreNewOne(element, newSubscription) {
- var oldSubscription = ko.utils.domData.get(element, templateSubscriptionDomDataKey);
- if (oldSubscription && (typeof(oldSubscription.dispose) == 'function'))
- oldSubscription.dispose();
- ko.utils.domData.set(element, templateSubscriptionDomDataKey, newSubscription);
- }
-
- ko.bindingHandlers['template'] = {
- 'init': function(element, valueAccessor) {
- // Support anonymous templates
- var bindingValue = ko.utils.unwrapObservable(valueAccessor());
- if ((typeof bindingValue != "string") && (!bindingValue.name) && (element.nodeType == 1)) {
- // It's an anonymous template - store the element contents, then clear the element
- new ko.templateSources.anonymousTemplate(element).text(element.innerHTML);
- ko.utils.emptyDomNode(element);
- }
- return { 'controlsDescendantBindings': true };
- },
- 'update': function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
- var bindingValue = ko.utils.unwrapObservable(valueAccessor());
- var templateName;
- var shouldDisplay = true;
-
- if (typeof bindingValue == "string") {
- templateName = bindingValue;
- } else {
- templateName = bindingValue.name;
-
- // Support "if"/"ifnot" conditions
- if ('if' in bindingValue)
- shouldDisplay = shouldDisplay && ko.utils.unwrapObservable(bindingValue['if']);
- if ('ifnot' in bindingValue)
- shouldDisplay = shouldDisplay && !ko.utils.unwrapObservable(bindingValue['ifnot']);
- }
-
- var templateSubscription = null;
-
- if ((typeof bindingValue === 'object') && ('foreach' in bindingValue)) { // Note: can't use 'in' operator on strings
- // Render once for each data point (treating data set as empty if shouldDisplay==false)
- var dataArray = (shouldDisplay && bindingValue['foreach']) || [];
- templateSubscription = ko.renderTemplateForEach(templateName || element, dataArray, /* options: */ bindingValue, element, bindingContext);
- } else {
- if (shouldDisplay) {
- // Render once for this single data point (or use the viewModel if no data was provided)
- var innerBindingContext = (typeof bindingValue == 'object') && ('data' in bindingValue)
- ? bindingContext['createChildContext'](ko.utils.unwrapObservable(bindingValue['data'])) // Given an explitit 'data' value, we create a child binding context for it
- : bindingContext; // Given no explicit 'data' value, we retain the same binding context
- templateSubscription = ko.renderTemplate(templateName || element, innerBindingContext, /* options: */ bindingValue, element);
- } else
- ko.virtualElements.emptyNode(element);
- }
-
- // It only makes sense to have a single template subscription per element (otherwise which one should have its output displayed?)
- disposeOldSubscriptionAndStoreNewOne(element, templateSubscription);
- }
- };
-
- // Anonymous templates can't be rewritten. Give a nice error message if you try to do it.
- ko.jsonExpressionRewriting.bindingRewriteValidators['template'] = function(bindingValue) {
- var parsedBindingValue = ko.jsonExpressionRewriting.parseObjectLiteral(bindingValue);
-
- if ((parsedBindingValue.length == 1) && parsedBindingValue[0]['unknown'])
- return null; // It looks like a string literal, not an object literal, so treat it as a named template (which is allowed for rewriting)
-
- if (ko.jsonExpressionRewriting.keyValueArrayContainsKey(parsedBindingValue, "name"))
- return null; // Named templates can be rewritten, so return "no error"
- return "This template engine does not support anonymous templates nested within its templates";
- };
-
- ko.virtualElements.allowedBindings['template'] = true;
-})();
-
-ko.exportSymbol('ko.setTemplateEngine', ko.setTemplateEngine);
-ko.exportSymbol('ko.renderTemplate', ko.renderTemplate);
-(function () {
- // Simple calculation based on Levenshtein distance.
- function calculateEditDistanceMatrix(oldArray, newArray, maxAllowedDistance) {
- var distances = [];
- for (var i = 0; i <= newArray.length; i++)
- distances[i] = [];
-
- // Top row - transform old array into empty array via deletions
- for (var i = 0, j = Math.min(oldArray.length, maxAllowedDistance); i <= j; i++)
- distances[0][i] = i;
-
- // Left row - transform empty array into new array via additions
- for (var i = 1, j = Math.min(newArray.length, maxAllowedDistance); i <= j; i++) {
- distances[i][0] = i;
- }
-
- // Fill out the body of the array
- var oldIndex, oldIndexMax = oldArray.length, newIndex, newIndexMax = newArray.length;
- var distanceViaAddition, distanceViaDeletion;
- for (oldIndex = 1; oldIndex <= oldIndexMax; oldIndex++) {
- var newIndexMinForRow = Math.max(1, oldIndex - maxAllowedDistance);
- var newIndexMaxForRow = Math.min(newIndexMax, oldIndex + maxAllowedDistance);
- for (newIndex = newIndexMinForRow; newIndex <= newIndexMaxForRow; newIndex++) {
- if (oldArray[oldIndex - 1] === newArray[newIndex - 1])
- distances[newIndex][oldIndex] = distances[newIndex - 1][oldIndex - 1];
- else {
- var northDistance = distances[newIndex - 1][oldIndex] === undefined ? Number.MAX_VALUE : distances[newIndex - 1][oldIndex] + 1;
- var westDistance = distances[newIndex][oldIndex - 1] === undefined ? Number.MAX_VALUE : distances[newIndex][oldIndex - 1] + 1;
- distances[newIndex][oldIndex] = Math.min(northDistance, westDistance);
- }
- }
- }
-
- return distances;
- }
-
- function findEditScriptFromEditDistanceMatrix(editDistanceMatrix, oldArray, newArray) {
- var oldIndex = oldArray.length;
- var newIndex = newArray.length;
- var editScript = [];
- var maxDistance = editDistanceMatrix[newIndex][oldIndex];
- if (maxDistance === undefined)
- return null; // maxAllowedDistance must be too small
- while ((oldIndex > 0) || (newIndex > 0)) {
- var me = editDistanceMatrix[newIndex][oldIndex];
- var distanceViaAdd = (newIndex > 0) ? editDistanceMatrix[newIndex - 1][oldIndex] : maxDistance + 1;
- var distanceViaDelete = (oldIndex > 0) ? editDistanceMatrix[newIndex][oldIndex - 1] : maxDistance + 1;
- var distanceViaRetain = (newIndex > 0) && (oldIndex > 0) ? editDistanceMatrix[newIndex - 1][oldIndex - 1] : maxDistance + 1;
- if ((distanceViaAdd === undefined) || (distanceViaAdd < me - 1)) distanceViaAdd = maxDistance + 1;
- if ((distanceViaDelete === undefined) || (distanceViaDelete < me - 1)) distanceViaDelete = maxDistance + 1;
- if (distanceViaRetain < me - 1) distanceViaRetain = maxDistance + 1;
-
- if ((distanceViaAdd <= distanceViaDelete) && (distanceViaAdd < distanceViaRetain)) {
- editScript.push({ status: "added", value: newArray[newIndex - 1] });
- newIndex--;
- } else if ((distanceViaDelete < distanceViaAdd) && (distanceViaDelete < distanceViaRetain)) {
- editScript.push({ status: "deleted", value: oldArray[oldIndex - 1] });
- oldIndex--;
- } else {
- editScript.push({ status: "retained", value: oldArray[oldIndex - 1] });
- newIndex--;
- oldIndex--;
- }
- }
- return editScript.reverse();
- }
-
- ko.utils.compareArrays = function (oldArray, newArray, maxEditsToConsider) {
- if (maxEditsToConsider === undefined) {
- return ko.utils.compareArrays(oldArray, newArray, 1) // First consider likely case where there is at most one edit (very fast)
- || ko.utils.compareArrays(oldArray, newArray, 10) // If that fails, account for a fair number of changes while still being fast
- || ko.utils.compareArrays(oldArray, newArray, Number.MAX_VALUE); // Ultimately give the right answer, even though it may take a long time
- } else {
- oldArray = oldArray || [];
- newArray = newArray || [];
- var editDistanceMatrix = calculateEditDistanceMatrix(oldArray, newArray, maxEditsToConsider);
- return findEditScriptFromEditDistanceMatrix(editDistanceMatrix, oldArray, newArray);
- }
- };
-})();
-
-ko.exportSymbol('ko.utils.compareArrays', ko.utils.compareArrays);
-
-(function () {
- // Objective:
- // * Given an input array, a container DOM node, and a function from array elements to arrays of DOM nodes,
- // map the array elements to arrays of DOM nodes, concatenate together all these arrays, and use them to populate the container DOM node
- // * Next time we're given the same combination of things (with the array possibly having mutated), update the container DOM node
- // so that its children is again the concatenation of the mappings of the array elements, but don't re-map any array elements that we
- // previously mapped - retain those nodes, and just insert/delete other ones
-
- // "callbackAfterAddingNodes" will be invoked after any "mapping"-generated nodes are inserted into the container node
- // You can use this, for example, to activate bindings on those nodes.
-
- function fixUpVirtualElements(contiguousNodeArray) {
- // Ensures that contiguousNodeArray really *is* an array of contiguous siblings, even if some of the interior
- // ones have changed since your array was first built (e.g., because your array contains virtual elements, and
- // their virtual children changed when binding was applied to them).
- // This is needed so that we can reliably remove or update the nodes corresponding to a given array item
-
- if (contiguousNodeArray.length > 2) {
- // Build up the actual new contiguous node set
- var current = contiguousNodeArray[0], last = contiguousNodeArray[contiguousNodeArray.length - 1], newContiguousSet = [current];
- while (current !== last) {
- current = current.nextSibling;
- if (!current) // Won't happen, except if the developer has manually removed some DOM elements (then we're in an undefined scenario)
- return;
- newContiguousSet.push(current);
- }
-
- // ... then mutate the input array to match this.
- // (The following line replaces the contents of contiguousNodeArray with newContiguousSet)
- Array.prototype.splice.apply(contiguousNodeArray, [0, contiguousNodeArray.length].concat(newContiguousSet));
- }
- }
-
- function mapNodeAndRefreshWhenChanged(containerNode, mapping, valueToMap, callbackAfterAddingNodes) {
- // Map this array value inside a dependentObservable so we re-map when any dependency changes
- var mappedNodes = [];
- var dependentObservable = ko.dependentObservable(function() {
- var newMappedNodes = mapping(valueToMap) || [];
-
- // On subsequent evaluations, just replace the previously-inserted DOM nodes
- if (mappedNodes.length > 0) {
- fixUpVirtualElements(mappedNodes);
- ko.utils.replaceDomNodes(mappedNodes, newMappedNodes);
- if (callbackAfterAddingNodes)
- callbackAfterAddingNodes(valueToMap, newMappedNodes);
- }
-
- // Replace the contents of the mappedNodes array, thereby updating the record
- // of which nodes would be deleted if valueToMap was itself later removed
- mappedNodes.splice(0, mappedNodes.length);
- ko.utils.arrayPushAll(mappedNodes, newMappedNodes);
- }, null, { 'disposeWhenNodeIsRemoved': containerNode, 'disposeWhen': function() { return (mappedNodes.length == 0) || !ko.utils.domNodeIsAttachedToDocument(mappedNodes[0]) } });
- return { mappedNodes : mappedNodes, dependentObservable : dependentObservable };
- }
-
- var lastMappingResultDomDataKey = "setDomNodeChildrenFromArrayMapping_lastMappingResult";
-
- ko.utils.setDomNodeChildrenFromArrayMapping = function (domNode, array, mapping, options, callbackAfterAddingNodes) {
- // Compare the provided array against the previous one
- array = array || [];
- options = options || {};
- var isFirstExecution = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) === undefined;
- var lastMappingResult = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) || [];
- var lastArray = ko.utils.arrayMap(lastMappingResult, function (x) { return x.arrayEntry; });
- var editScript = ko.utils.compareArrays(lastArray, array);
-
- // Build the new mapping result
- var newMappingResult = [];
- var lastMappingResultIndex = 0;
- var nodesToDelete = [];
- var nodesAdded = [];
- var insertAfterNode = null;
- for (var i = 0, j = editScript.length; i < j; i++) {
- switch (editScript[i].status) {
- case "retained":
- // Just keep the information - don't touch the nodes
- var dataToRetain = lastMappingResult[lastMappingResultIndex];
- newMappingResult.push(dataToRetain);
- if (dataToRetain.domNodes.length > 0)
- insertAfterNode = dataToRetain.domNodes[dataToRetain.domNodes.length - 1];
- lastMappingResultIndex++;
- break;
-
- case "deleted":
- // Stop tracking changes to the mapping for these nodes
- lastMappingResult[lastMappingResultIndex].dependentObservable.dispose();
-
- // Queue these nodes for later removal
- fixUpVirtualElements(lastMappingResult[lastMappingResultIndex].domNodes);
- ko.utils.arrayForEach(lastMappingResult[lastMappingResultIndex].domNodes, function (node) {
- nodesToDelete.push({
- element: node,
- index: i,
- value: editScript[i].value
- });
- insertAfterNode = node;
- });
- lastMappingResultIndex++;
- break;
-
- case "added":
- var valueToMap = editScript[i].value;
- var mapData = mapNodeAndRefreshWhenChanged(domNode, mapping, valueToMap, callbackAfterAddingNodes);
- var mappedNodes = mapData.mappedNodes;
-
- // On the first evaluation, insert the nodes at the current insertion point
- newMappingResult.push({ arrayEntry: editScript[i].value, domNodes: mappedNodes, dependentObservable: mapData.dependentObservable });
- for (var nodeIndex = 0, nodeIndexMax = mappedNodes.length; nodeIndex < nodeIndexMax; nodeIndex++) {
- var node = mappedNodes[nodeIndex];
- nodesAdded.push({
- element: node,
- index: i,
- value: editScript[i].value
- });
- if (insertAfterNode == null) {
- // Insert "node" (the newly-created node) as domNode's first child
- ko.virtualElements.prepend(domNode, node);
- } else {
- // Insert "node" into "domNode" immediately after "insertAfterNode"
- ko.virtualElements.insertAfter(domNode, node, insertAfterNode);
- }
- insertAfterNode = node;
- }
- if (callbackAfterAddingNodes)
- callbackAfterAddingNodes(valueToMap, mappedNodes);
- break;
- }
- }
-
- ko.utils.arrayForEach(nodesToDelete, function (node) { ko.cleanNode(node.element) });
-
- var invokedBeforeRemoveCallback = false;
- if (!isFirstExecution) {
- if (options['afterAdd']) {
- for (var i = 0; i < nodesAdded.length; i++)
- options['afterAdd'](nodesAdded[i].element, nodesAdded[i].index, nodesAdded[i].value);
- }
- if (options['beforeRemove']) {
- for (var i = 0; i < nodesToDelete.length; i++)
- options['beforeRemove'](nodesToDelete[i].element, nodesToDelete[i].index, nodesToDelete[i].value);
- invokedBeforeRemoveCallback = true;
- }
- }
- if (!invokedBeforeRemoveCallback)
- ko.utils.arrayForEach(nodesToDelete, function (node) {
- ko.removeNode(node.element);
- });
-
- // Store a copy of the array items we just considered so we can difference it next time
- ko.utils.domData.set(domNode, lastMappingResultDomDataKey, newMappingResult);
- }
-})();
-
-ko.exportSymbol('ko.utils.setDomNodeChildrenFromArrayMapping', ko.utils.setDomNodeChildrenFromArrayMapping);
-ko.nativeTemplateEngine = function () {
- this['allowTemplateRewriting'] = false;
-}
-
-ko.nativeTemplateEngine.prototype = new ko.templateEngine();
-ko.nativeTemplateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options) {
- var templateText = templateSource.text();
- return ko.utils.parseHtmlFragment(templateText);
-};
-
-ko.nativeTemplateEngine.instance = new ko.nativeTemplateEngine();
-ko.setTemplateEngine(ko.nativeTemplateEngine.instance);
-
-ko.exportSymbol('ko.nativeTemplateEngine', ko.nativeTemplateEngine);(function() {
- ko.jqueryTmplTemplateEngine = function () {
- // Detect which version of jquery-tmpl you're using. Unfortunately jquery-tmpl
- // doesn't expose a version number, so we have to infer it.
- // Note that as of Knockout 1.3, we only support jQuery.tmpl 1.0.0pre and later,
- // which KO internally refers to as version "2", so older versions are no longer detected.
- var jQueryTmplVersion = this.jQueryTmplVersion = (function() {
- if ((typeof(jQuery) == "undefined") || !(jQuery['tmpl']))
- return 0;
- // Since it exposes no official version number, we use our own numbering system. To be updated as jquery-tmpl evolves.
- try {
- if (jQuery['tmpl']['tag']['tmpl']['open'].toString().indexOf('__') >= 0) {
- // Since 1.0.0pre, custom tags should append markup to an array called "__"
- return 2; // Final version of jquery.tmpl
- }
- } catch(ex) { /* Apparently not the version we were looking for */ }
-
- return 1; // Any older version that we don't support
- })();
-
- function ensureHasReferencedJQueryTemplates() {
- if (jQueryTmplVersion < 2)
- throw new Error("Your version of jQuery.tmpl is too old. Please upgrade to jQuery.tmpl 1.0.0pre or later.");
- }
-
- function executeTemplate(compiledTemplate, data, jQueryTemplateOptions) {
- return jQuery['tmpl'](compiledTemplate, data, jQueryTemplateOptions);
- }
-
- this['renderTemplateSource'] = function(templateSource, bindingContext, options) {
- options = options || {};
- ensureHasReferencedJQueryTemplates();
-
- // Ensure we have stored a precompiled version of this template (don't want to reparse on every render)
- var precompiled = templateSource['data']('precompiled');
- if (!precompiled) {
- var templateText = templateSource.text() || "";
- // Wrap in "with($whatever.koBindingContext) { ... }"
- templateText = "{{ko_with $item.koBindingContext}}" + templateText + "{{/ko_with}}";
-
- precompiled = jQuery['template'](null, templateText);
- templateSource['data']('precompiled', precompiled);
- }
-
- var data = [bindingContext['$data']]; // Prewrap the data in an array to stop jquery.tmpl from trying to unwrap any arrays
- var jQueryTemplateOptions = jQuery['extend']({ 'koBindingContext': bindingContext }, options['templateOptions']);
-
- var resultNodes = executeTemplate(precompiled, data, jQueryTemplateOptions);
- resultNodes['appendTo'](document.createElement("div")); // Using "appendTo" forces jQuery/jQuery.tmpl to perform necessary cleanup work
- jQuery['fragments'] = {}; // Clear jQuery's fragment cache to avoid a memory leak after a large number of template renders
- return resultNodes;
- };
-
- this['createJavaScriptEvaluatorBlock'] = function(script) {
- return "{{ko_code ((function() { return " + script + " })()) }}";
- };
-
- this['addTemplate'] = function(templateName, templateMarkup) {
- document.write("<script type='text/html' id='" + templateName + "'>" + templateMarkup + "</script>");
- };
-
- if (jQueryTmplVersion > 0) {
- jQuery['tmpl']['tag']['ko_code'] = {
- open: "__.push($1 || '');"
- };
- jQuery['tmpl']['tag']['ko_with'] = {
- open: "with($1) {",
- close: "} "
- };
- }
- };
-
- ko.jqueryTmplTemplateEngine.prototype = new ko.templateEngine();
-
- // Use this one by default *only if jquery.tmpl is referenced*
- var jqueryTmplTemplateEngineInstance = new ko.jqueryTmplTemplateEngine();
- if (jqueryTmplTemplateEngineInstance.jQueryTmplVersion > 0)
- ko.setTemplateEngine(jqueryTmplTemplateEngineInstance);
-
- ko.exportSymbol('ko.jqueryTmplTemplateEngine', ko.jqueryTmplTemplateEngine);
-})();})(window);
|