+++ /dev/null
-// Knockout JavaScript library v2.1.0pre\r
-// (c) Steven Sanderson - http://knockoutjs.com/\r
-// License: MIT (http://www.opensource.org/licenses/mit-license.php)\r
-\r
-(function(window,document,navigator,undefined){ \r
-!function(factory) {\r
- // Support AMD where available and opted in via define.amd.ko\r
- if (typeof define === 'function' && define['amd'] && define['amd']['ko']) {\r
- // Register as an AMD anonymous module\r
- define(['exports'], factory);\r
- } else {\r
- // AMD not in use (e.g., when referenced via aplain <script> tag) - put ko directly in global namespace\r
- factory(window['ko'] = {});\r
- }\r
-}(function(koExports){\r
-// Internally, all KO objects are attached to koExports (even the non-exported ones whose names will be minified by the closure compiler).\r
-// In the future, the following "ko" variable may be made distinct from "koExports" so that private objects are not externally reachable.\r
-var ko = typeof koExports !== 'undefined' ? koExports : {};\r
-// Google Closure Compiler helpers (used only to make the minified file smaller)\r
-ko.exportSymbol = function(koPath, object) {\r
- var tokens = koPath.split(".");\r
- \r
- // In the future, "ko" may become distinct from "koExports" (so that non-exported objects are not reachable)\r
- // At that point, "target" would be set to: (typeof koExports !== "undefined" ? koExports : ko)\r
- var target = ko;\r
-\r
- for (var i = 0; i < tokens.length - 1; i++)\r
- target = target[tokens[i]];\r
- target[tokens[tokens.length - 1]] = object;\r
-};\r
-ko.exportProperty = function(owner, publicName, object) {\r
- owner[publicName] = object;\r
-};\r
-\r
-ko.utils = new (function () {\r
- var stringTrimRegex = /^(\s|\u00A0)+|(\s|\u00A0)+$/g;\r
- \r
- // Represent the known event types in a compact way, then at runtime transform it into a hash with event name as key (for fast lookup)\r
- var knownEvents = {}, knownEventTypesByEventName = {};\r
- var keyEventTypeName = /Firefox\/2/i.test(navigator.userAgent) ? 'KeyboardEvent' : 'UIEvents';\r
- knownEvents[keyEventTypeName] = ['keyup', 'keydown', 'keypress'];\r
- knownEvents['MouseEvents'] = ['click', 'dblclick', 'mousedown', 'mouseup', 'mousemove', 'mouseover', 'mouseout', 'mouseenter', 'mouseleave']; \r
- for (var eventType in knownEvents) {\r
- var knownEventsForType = knownEvents[eventType];\r
- if (knownEventsForType.length) {\r
- for (var i = 0, j = knownEventsForType.length; i < j; i++)\r
- knownEventTypesByEventName[knownEventsForType[i]] = eventType;\r
- }\r
- }\r
-\r
- // Detect IE versions for bug workarounds (uses IE conditionals, not UA string, for robustness)\r
- var ieVersion = (function() {\r
- var version = 3, div = document.createElement('div'), iElems = div.getElementsByTagName('i');\r
- \r
- // Keep constructing conditional HTML blocks until we hit one that resolves to an empty fragment\r
- while (\r
- div.innerHTML = '<!--[if gt IE ' + (++version) + ']><i></i><![endif]-->',\r
- iElems[0]\r
- ); \r
- return version > 4 ? version : undefined; \r
- }());\r
- var isIe6 = ieVersion === 6,\r
- isIe7 = ieVersion === 7;\r
-\r
- function isClickOnCheckableElement(element, eventType) {\r
- if ((element.tagName != "INPUT") || !element.type) return false;\r
- if (eventType.toLowerCase() != "click") return false;\r
- var inputType = element.type.toLowerCase();\r
- return (inputType == "checkbox") || (inputType == "radio");\r
- }\r
- \r
- return {\r
- fieldsIncludedWithJsonPost: ['authenticity_token', /^__RequestVerificationToken(_.*)?$/],\r
- \r
- arrayForEach: function (array, action) {\r
- for (var i = 0, j = array.length; i < j; i++)\r
- action(array[i]);\r
- },\r
-\r
- arrayIndexOf: function (array, item) {\r
- if (typeof Array.prototype.indexOf == "function")\r
- return Array.prototype.indexOf.call(array, item);\r
- for (var i = 0, j = array.length; i < j; i++)\r
- if (array[i] === item)\r
- return i;\r
- return -1;\r
- },\r
-\r
- arrayFirst: function (array, predicate, predicateOwner) {\r
- for (var i = 0, j = array.length; i < j; i++)\r
- if (predicate.call(predicateOwner, array[i]))\r
- return array[i];\r
- return null;\r
- },\r
-\r
- arrayRemoveItem: function (array, itemToRemove) {\r
- var index = ko.utils.arrayIndexOf(array, itemToRemove);\r
- if (index >= 0)\r
- array.splice(index, 1);\r
- },\r
-\r
- arrayGetDistinctValues: function (array) {\r
- array = array || [];\r
- var result = [];\r
- for (var i = 0, j = array.length; i < j; i++) {\r
- if (ko.utils.arrayIndexOf(result, array[i]) < 0)\r
- result.push(array[i]);\r
- }\r
- return result;\r
- }, \r
-\r
- arrayMap: function (array, mapping) {\r
- array = array || [];\r
- var result = [];\r
- for (var i = 0, j = array.length; i < j; i++)\r
- result.push(mapping(array[i]));\r
- return result;\r
- },\r
-\r
- arrayFilter: function (array, predicate) {\r
- array = array || [];\r
- var result = [];\r
- for (var i = 0, j = array.length; i < j; i++)\r
- if (predicate(array[i]))\r
- result.push(array[i]);\r
- return result;\r
- },\r
- \r
- arrayPushAll: function (array, valuesToPush) {\r
- for (var i = 0, j = valuesToPush.length; i < j; i++)\r
- array.push(valuesToPush[i]); \r
- return array;\r
- },\r
-\r
- extend: function (target, source) {\r
- for(var prop in source) {\r
- if(source.hasOwnProperty(prop)) {\r
- target[prop] = source[prop];\r
- }\r
- }\r
- return target;\r
- },\r
-\r
- emptyDomNode: function (domNode) {\r
- while (domNode.firstChild) {\r
- ko.removeNode(domNode.firstChild);\r
- }\r
- },\r
-\r
- setDomNodeChildren: function (domNode, childNodes) {\r
- ko.utils.emptyDomNode(domNode);\r
- if (childNodes) {\r
- ko.utils.arrayForEach(childNodes, function (childNode) {\r
- domNode.appendChild(childNode);\r
- });\r
- }\r
- },\r
-\r
- replaceDomNodes: function (nodeToReplaceOrNodeArray, newNodesArray) {\r
- var nodesToReplaceArray = nodeToReplaceOrNodeArray.nodeType ? [nodeToReplaceOrNodeArray] : nodeToReplaceOrNodeArray;\r
- if (nodesToReplaceArray.length > 0) {\r
- var insertionPoint = nodesToReplaceArray[0];\r
- var parent = insertionPoint.parentNode;\r
- for (var i = 0, j = newNodesArray.length; i < j; i++)\r
- parent.insertBefore(newNodesArray[i], insertionPoint);\r
- for (var i = 0, j = nodesToReplaceArray.length; i < j; i++) {\r
- ko.removeNode(nodesToReplaceArray[i]);\r
- }\r
- }\r
- },\r
-\r
- setOptionNodeSelectionState: function (optionNode, isSelected) {\r
- // IE6 sometimes throws "unknown error" if you try to write to .selected directly, whereas Firefox struggles with setAttribute. Pick one based on browser.\r
- if (navigator.userAgent.indexOf("MSIE 6") >= 0)\r
- optionNode.setAttribute("selected", isSelected);\r
- else\r
- optionNode.selected = isSelected;\r
- },\r
- \r
- stringTrim: function (string) {\r
- return (string || "").replace(stringTrimRegex, "");\r
- },\r
-\r
- stringTokenize: function (string, delimiter) {\r
- var result = [];\r
- var tokens = (string || "").split(delimiter);\r
- for (var i = 0, j = tokens.length; i < j; i++) {\r
- var trimmed = ko.utils.stringTrim(tokens[i]);\r
- if (trimmed !== "")\r
- result.push(trimmed);\r
- }\r
- return result;\r
- },\r
- \r
- stringStartsWith: function (string, startsWith) { \r
- string = string || "";\r
- if (startsWith.length > string.length)\r
- return false;\r
- return string.substring(0, startsWith.length) === startsWith;\r
- },\r
-\r
- buildEvalWithinScopeFunction: function (expression, scopeLevels) {\r
- // Build the source for a function that evaluates "expression"\r
- // For each scope variable, add an extra level of "with" nesting\r
- // Example result: with(sc[1]) { with(sc[0]) { return (expression) } }\r
- var functionBody = "return (" + expression + ")";\r
- for (var i = 0; i < scopeLevels; i++) {\r
- functionBody = "with(sc[" + i + "]) { " + functionBody + " } ";\r
- }\r
- return new Function("sc", functionBody);\r
- },\r
-\r
- domNodeIsContainedBy: function (node, containedByNode) {\r
- if (containedByNode.compareDocumentPosition)\r
- return (containedByNode.compareDocumentPosition(node) & 16) == 16;\r
- while (node != null) {\r
- if (node == containedByNode)\r
- return true;\r
- node = node.parentNode;\r
- }\r
- return false;\r
- },\r
-\r
- domNodeIsAttachedToDocument: function (node) {\r
- return ko.utils.domNodeIsContainedBy(node, document);\r
- },\r
-\r
- registerEventHandler: function (element, eventType, handler) {\r
- if (typeof jQuery != "undefined") {\r
- if (isClickOnCheckableElement(element, eventType)) {\r
- // For click events on checkboxes, jQuery interferes with the event handling in an awkward way:\r
- // it toggles the element checked state *after* the click event handlers run, whereas native\r
- // click events toggle the checked state *before* the event handler. \r
- // Fix this by intecepting the handler and applying the correct checkedness before it runs. \r
- var originalHandler = handler;\r
- handler = function(event, eventData) {\r
- var jQuerySuppliedCheckedState = this.checked;\r
- if (eventData)\r
- this.checked = eventData.checkedStateBeforeEvent !== true;\r
- originalHandler.call(this, event);\r
- this.checked = jQuerySuppliedCheckedState; // Restore the state jQuery applied\r
- }; \r
- }\r
- jQuery(element)['bind'](eventType, handler);\r
- } else if (typeof element.addEventListener == "function")\r
- element.addEventListener(eventType, handler, false);\r
- else if (typeof element.attachEvent != "undefined")\r
- element.attachEvent("on" + eventType, function (event) {\r
- handler.call(element, event);\r
- });\r
- else\r
- throw new Error("Browser doesn't support addEventListener or attachEvent");\r
- },\r
-\r
- triggerEvent: function (element, eventType) {\r
- if (!(element && element.nodeType))\r
- throw new Error("element must be a DOM node when calling triggerEvent");\r
-\r
- if (typeof jQuery != "undefined") {\r
- var eventData = [];\r
- if (isClickOnCheckableElement(element, eventType)) {\r
- // Work around the jQuery "click events on checkboxes" issue described above by storing the original checked state before triggering the handler\r
- eventData.push({ checkedStateBeforeEvent: element.checked });\r
- }\r
- jQuery(element)['trigger'](eventType, eventData);\r
- } else if (typeof document.createEvent == "function") {\r
- if (typeof element.dispatchEvent == "function") {\r
- var eventCategory = knownEventTypesByEventName[eventType] || "HTMLEvents";\r
- var event = document.createEvent(eventCategory);\r
- event.initEvent(eventType, true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, element);\r
- element.dispatchEvent(event);\r
- }\r
- else\r
- throw new Error("The supplied element doesn't support dispatchEvent");\r
- } else if (typeof element.fireEvent != "undefined") {\r
- // Unlike other browsers, IE doesn't change the checked state of checkboxes/radiobuttons when you trigger their "click" event\r
- // so to make it consistent, we'll do it manually here\r
- if (eventType == "click") {\r
- if ((element.tagName == "INPUT") && ((element.type.toLowerCase() == "checkbox") || (element.type.toLowerCase() == "radio")))\r
- element.checked = element.checked !== true;\r
- }\r
- element.fireEvent("on" + eventType);\r
- }\r
- else\r
- throw new Error("Browser doesn't support triggering events");\r
- },\r
-\r
- unwrapObservable: function (value) {\r
- return ko.isObservable(value) ? value() : value;\r
- },\r
-\r
- domNodeHasCssClass: function (node, className) {\r
- var currentClassNames = (node.className || "").split(/\s+/);\r
- return ko.utils.arrayIndexOf(currentClassNames, className) >= 0;\r
- },\r
-\r
- toggleDomNodeCssClass: function (node, className, shouldHaveClass) {\r
- var hasClass = ko.utils.domNodeHasCssClass(node, className);\r
- if (shouldHaveClass && !hasClass) {\r
- node.className = (node.className || "") + " " + className;\r
- } else if (hasClass && !shouldHaveClass) {\r
- var currentClassNames = (node.className || "").split(/\s+/);\r
- var newClassName = "";\r
- for (var i = 0; i < currentClassNames.length; i++)\r
- if (currentClassNames[i] != className)\r
- newClassName += currentClassNames[i] + " ";\r
- node.className = ko.utils.stringTrim(newClassName);\r
- }\r
- },\r
-\r
- outerHTML: function(node) {\r
- // For Chrome on non-text nodes\r
- // (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.)\r
- if (ieVersion === undefined) {\r
- var nativeOuterHtml = node.outerHTML;\r
- if (typeof nativeOuterHtml == "string")\r
- return nativeOuterHtml;\r
- }\r
-\r
- // Other browsers\r
- var dummyContainer = window.document.createElement("div");\r
- dummyContainer.appendChild(node.cloneNode(true));\r
- return dummyContainer.innerHTML;\r
- },\r
-\r
- setTextContent: function(element, textContent) {\r
- var value = ko.utils.unwrapObservable(textContent);\r
- if ((value === null) || (value === undefined))\r
- value = "";\r
-\r
- 'innerText' in element ? element.innerText = value\r
- : element.textContent = value;\r
- \r
- if (ieVersion >= 9) {\r
- // Believe it or not, this actually fixes an IE9 rendering bug. Insane. https://github.com/SteveSanderson/knockout/issues/209\r
- element.style.display = element.style.display;\r
- }\r
- },\r
-\r
- range: function (min, max) {\r
- min = ko.utils.unwrapObservable(min);\r
- max = ko.utils.unwrapObservable(max);\r
- var result = [];\r
- for (var i = min; i <= max; i++)\r
- result.push(i);\r
- return result;\r
- },\r
- \r
- makeArray: function(arrayLikeObject) {\r
- var result = [];\r
- for (var i = 0, j = arrayLikeObject.length; i < j; i++) {\r
- result.push(arrayLikeObject[i]);\r
- };\r
- return result;\r
- },\r
- \r
- isIe6 : isIe6,\r
- isIe7 : isIe7,\r
- \r
- getFormFields: function(form, fieldName) {\r
- var fields = ko.utils.makeArray(form.getElementsByTagName("INPUT")).concat(ko.utils.makeArray(form.getElementsByTagName("TEXTAREA")));\r
- var isMatchingField = (typeof fieldName == 'string') \r
- ? function(field) { return field.name === fieldName }\r
- : function(field) { return fieldName.test(field.name) }; // Treat fieldName as regex or object containing predicate\r
- var matches = [];\r
- for (var i = fields.length - 1; i >= 0; i--) {\r
- if (isMatchingField(fields[i]))\r
- matches.push(fields[i]);\r
- };\r
- return matches;\r
- },\r
- \r
- parseJson: function (jsonString) {\r
- if (typeof jsonString == "string") {\r
- jsonString = ko.utils.stringTrim(jsonString);\r
- if (jsonString) {\r
- if (window.JSON && window.JSON.parse) // Use native parsing where available\r
- return window.JSON.parse(jsonString);\r
- return (new Function("return " + jsonString))(); // Fallback on less safe parsing for older browsers\r
- }\r
- } \r
- return null;\r
- },\r
-\r
- stringifyJson: function (data) {\r
- if ((typeof JSON == "undefined") || (typeof JSON.stringify == "undefined"))\r
- 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");\r
- return JSON.stringify(ko.utils.unwrapObservable(data));\r
- },\r
-\r
- postJson: function (urlOrForm, data, options) {\r
- options = options || {};\r
- var params = options['params'] || {};\r
- var includeFields = options['includeFields'] || this.fieldsIncludedWithJsonPost;\r
- var url = urlOrForm;\r
- \r
- // If we were given a form, use its 'action' URL and pick out any requested field values \r
- if((typeof urlOrForm == 'object') && (urlOrForm.tagName == "FORM")) {\r
- var originalForm = urlOrForm;\r
- url = originalForm.action;\r
- for (var i = includeFields.length - 1; i >= 0; i--) {\r
- var fields = ko.utils.getFormFields(originalForm, includeFields[i]);\r
- for (var j = fields.length - 1; j >= 0; j--) \r
- params[fields[j].name] = fields[j].value;\r
- }\r
- } \r
- \r
- data = ko.utils.unwrapObservable(data);\r
- var form = document.createElement("FORM");\r
- form.style.display = "none";\r
- form.action = url;\r
- form.method = "post";\r
- for (var key in data) {\r
- var input = document.createElement("INPUT");\r
- input.name = key;\r
- input.value = ko.utils.stringifyJson(ko.utils.unwrapObservable(data[key]));\r
- form.appendChild(input);\r
- }\r
- for (var key in params) {\r
- var input = document.createElement("INPUT");\r
- input.name = key;\r
- input.value = params[key];\r
- form.appendChild(input);\r
- } \r
- document.body.appendChild(form);\r
- options['submitter'] ? options['submitter'](form) : form.submit();\r
- setTimeout(function () { form.parentNode.removeChild(form); }, 0);\r
- }\r
- }\r
-})();\r
-\r
-ko.exportSymbol('utils', ko.utils);\r
-ko.exportSymbol('utils.arrayForEach', ko.utils.arrayForEach);\r
-ko.exportSymbol('utils.arrayFirst', ko.utils.arrayFirst);\r
-ko.exportSymbol('utils.arrayFilter', ko.utils.arrayFilter);\r
-ko.exportSymbol('utils.arrayGetDistinctValues', ko.utils.arrayGetDistinctValues);\r
-ko.exportSymbol('utils.arrayIndexOf', ko.utils.arrayIndexOf);\r
-ko.exportSymbol('utils.arrayMap', ko.utils.arrayMap);\r
-ko.exportSymbol('utils.arrayPushAll', ko.utils.arrayPushAll);\r
-ko.exportSymbol('utils.arrayRemoveItem', ko.utils.arrayRemoveItem);\r
-ko.exportSymbol('utils.extend', ko.utils.extend);\r
-ko.exportSymbol('utils.fieldsIncludedWithJsonPost', ko.utils.fieldsIncludedWithJsonPost);\r
-ko.exportSymbol('utils.getFormFields', ko.utils.getFormFields);\r
-ko.exportSymbol('utils.postJson', ko.utils.postJson);\r
-ko.exportSymbol('utils.parseJson', ko.utils.parseJson);\r
-ko.exportSymbol('utils.registerEventHandler', ko.utils.registerEventHandler);\r
-ko.exportSymbol('utils.stringifyJson', ko.utils.stringifyJson);\r
-ko.exportSymbol('utils.range', ko.utils.range);\r
-ko.exportSymbol('utils.toggleDomNodeCssClass', ko.utils.toggleDomNodeCssClass);\r
-ko.exportSymbol('utils.triggerEvent', ko.utils.triggerEvent);\r
-ko.exportSymbol('utils.unwrapObservable', ko.utils.unwrapObservable);\r
-\r
-if (!Function.prototype['bind']) {\r
- // 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)\r
- // In case the browser doesn't implement it natively, provide a JavaScript implementation. This implementation is based on the one in prototype.js\r
- Function.prototype['bind'] = function (object) {\r
- var originalFunction = this, args = Array.prototype.slice.call(arguments), object = args.shift();\r
- return function () {\r
- return originalFunction.apply(object, args.concat(Array.prototype.slice.call(arguments)));\r
- }; \r
- };\r
-}\r
-\r
-ko.utils.domData = new (function () {\r
- var uniqueId = 0;\r
- var dataStoreKeyExpandoPropertyName = "__ko__" + (new Date).getTime();\r
- var dataStore = {};\r
- return {\r
- get: function (node, key) {\r
- var allDataForNode = ko.utils.domData.getAll(node, false);\r
- return allDataForNode === undefined ? undefined : allDataForNode[key];\r
- },\r
- set: function (node, key, value) {\r
- if (value === undefined) {\r
- // Make sure we don't actually create a new domData key if we are actually deleting a value\r
- if (ko.utils.domData.getAll(node, false) === undefined)\r
- return;\r
- }\r
- var allDataForNode = ko.utils.domData.getAll(node, true);\r
- allDataForNode[key] = value;\r
- },\r
- getAll: function (node, createIfNotFound) {\r
- var dataStoreKey = node[dataStoreKeyExpandoPropertyName];\r
- var hasExistingDataStore = dataStoreKey && (dataStoreKey !== "null");\r
- if (!hasExistingDataStore) {\r
- if (!createIfNotFound)\r
- return undefined;\r
- dataStoreKey = node[dataStoreKeyExpandoPropertyName] = "ko" + uniqueId++;\r
- dataStore[dataStoreKey] = {};\r
- }\r
- return dataStore[dataStoreKey];\r
- },\r
- clear: function (node) {\r
- var dataStoreKey = node[dataStoreKeyExpandoPropertyName];\r
- if (dataStoreKey) {\r
- delete dataStore[dataStoreKey];\r
- node[dataStoreKeyExpandoPropertyName] = null;\r
- }\r
- }\r
- }\r
-})();\r
-\r
-ko.exportSymbol('utils.domData', ko.utils.domData);\r
-ko.exportSymbol('utils.domData.clear', ko.utils.domData.clear); // Exporting only so specs can clear up after themselves fully\r
-ko.utils.domNodeDisposal = new (function () {\r
- var domDataKey = "__ko_domNodeDisposal__" + (new Date).getTime();\r
- \r
- function getDisposeCallbacksCollection(node, createIfNotFound) {\r
- var allDisposeCallbacks = ko.utils.domData.get(node, domDataKey);\r
- if ((allDisposeCallbacks === undefined) && createIfNotFound) {\r
- allDisposeCallbacks = [];\r
- ko.utils.domData.set(node, domDataKey, allDisposeCallbacks);\r
- }\r
- return allDisposeCallbacks;\r
- }\r
- function destroyCallbacksCollection(node) {\r
- ko.utils.domData.set(node, domDataKey, undefined);\r
- }\r
- \r
- function cleanSingleNode(node) {\r
- // Run all the dispose callbacks\r
- var callbacks = getDisposeCallbacksCollection(node, false);\r
- if (callbacks) {\r
- callbacks = callbacks.slice(0); // Clone, as the array may be modified during iteration (typically, callbacks will remove themselves)\r
- for (var i = 0; i < callbacks.length; i++)\r
- callbacks[i](node);\r
- } \r
- \r
- // Also erase the DOM data\r
- ko.utils.domData.clear(node); \r
- \r
- // Special support for jQuery here because it's so commonly used.\r
- // Many jQuery plugins (including jquery.tmpl) store data using jQuery's equivalent of domData\r
- // so notify it to tear down any resources associated with the node & descendants here.\r
- if ((typeof jQuery == "function") && (typeof jQuery['cleanData'] == "function"))\r
- jQuery['cleanData']([node]); \r
- }\r
- \r
- return {\r
- addDisposeCallback : function(node, callback) {\r
- if (typeof callback != "function")\r
- throw new Error("Callback must be a function");\r
- getDisposeCallbacksCollection(node, true).push(callback);\r
- },\r
- \r
- removeDisposeCallback : function(node, callback) {\r
- var callbacksCollection = getDisposeCallbacksCollection(node, false);\r
- if (callbacksCollection) {\r
- ko.utils.arrayRemoveItem(callbacksCollection, callback);\r
- if (callbacksCollection.length == 0)\r
- destroyCallbacksCollection(node);\r
- }\r
- },\r
- \r
- cleanNode : function(node) {\r
- if ((node.nodeType != 1) && (node.nodeType != 9))\r
- return;\r
- cleanSingleNode(node);\r
- \r
- // Clone the descendants list in case it changes during iteration\r
- var descendants = [];\r
- ko.utils.arrayPushAll(descendants, node.getElementsByTagName("*"));\r
- for (var i = 0, j = descendants.length; i < j; i++)\r
- cleanSingleNode(descendants[i]);\r
- },\r
- \r
- removeNode : function(node) {\r
- ko.cleanNode(node);\r
- if (node.parentNode)\r
- node.parentNode.removeChild(node);\r
- }\r
- }\r
-})();\r
-ko.cleanNode = ko.utils.domNodeDisposal.cleanNode; // Shorthand name for convenience\r
-ko.removeNode = ko.utils.domNodeDisposal.removeNode; // Shorthand name for convenience\r
-ko.exportSymbol('cleanNode', ko.cleanNode); \r
-ko.exportSymbol('removeNode', ko.removeNode);\r
-ko.exportSymbol('utils.domNodeDisposal', ko.utils.domNodeDisposal);\r
-ko.exportSymbol('utils.domNodeDisposal.addDisposeCallback', ko.utils.domNodeDisposal.addDisposeCallback);\r
-ko.exportSymbol('utils.domNodeDisposal.removeDisposeCallback', ko.utils.domNodeDisposal.removeDisposeCallback);(function () {\r
- var leadingCommentRegex = /^(\s*)<!--(.*?)-->/;\r
-\r
- function simpleHtmlParse(html) {\r
- // Based on jQuery's "clean" function, but only accounting for table-related elements.\r
- // If you have referenced jQuery, this won't be used anyway - KO will use jQuery's "clean" function directly\r
-\r
- // Note that there's still an issue in IE < 9 whereby it will discard comment nodes that are the first child of\r
- // a descendant node. For example: "<div><!-- mycomment -->abc</div>" will get parsed as "<div>abc</div>"\r
- // This won't affect anyone who has referenced jQuery, and there's always the workaround of inserting a dummy node\r
- // (possibly a text node) in front of the comment. So, KO does not attempt to workaround this IE issue automatically at present.\r
- \r
- // Trim whitespace, otherwise indexOf won't work as expected\r
- var tags = ko.utils.stringTrim(html).toLowerCase(), div = document.createElement("div");\r
-\r
- // Finds the first match from the left column, and returns the corresponding "wrap" data from the right column\r
- var wrap = tags.match(/^<(thead|tbody|tfoot)/) && [1, "<table>", "</table>"] ||\r
- !tags.indexOf("<tr") && [2, "<table><tbody>", "</tbody></table>"] ||\r
- (!tags.indexOf("<td") || !tags.indexOf("<th")) && [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||\r
- /* anything else */ [0, "", ""];\r
-\r
- // Go to html and back, then peel off extra wrappers\r
- // Note that we always prefix with some dummy text, because otherwise, IE<9 will strip out leading comment nodes in descendants. Total madness.\r
- var markup = "ignored<div>" + wrap[1] + html + wrap[2] + "</div>";\r
- if (typeof window['innerShiv'] == "function") {\r
- div.appendChild(window['innerShiv'](markup));\r
- } else {\r
- div.innerHTML = markup;\r
- }\r
-\r
- // Move to the right depth\r
- while (wrap[0]--)\r
- div = div.lastChild;\r
-\r
- return ko.utils.makeArray(div.lastChild.childNodes);\r
- }\r
-\r
- function jQueryHtmlParse(html) {\r
- var elems = jQuery['clean']([html]);\r
-\r
- // 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.\r
- // Unfortunately, it never clears the dummy parent nodes from the document fragment, so it leaks memory over time.\r
- // Fix this by finding the top-most dummy parent element, and detaching it from its owner fragment.\r
- if (elems && elems[0]) {\r
- // Find the top-most parent element that's a direct child of a document fragment\r
- var elem = elems[0];\r
- while (elem.parentNode && elem.parentNode.nodeType !== 11 /* i.e., DocumentFragment */)\r
- elem = elem.parentNode;\r
- // ... then detach it\r
- if (elem.parentNode)\r
- elem.parentNode.removeChild(elem);\r
- }\r
- \r
- return elems;\r
- }\r
- \r
- ko.utils.parseHtmlFragment = function(html) {\r
- return typeof jQuery != 'undefined' ? jQueryHtmlParse(html) // As below, benefit from jQuery's optimisations where possible\r
- : simpleHtmlParse(html); // ... otherwise, this simple logic will do in most common cases.\r
- };\r
- \r
- ko.utils.setHtml = function(node, html) {\r
- ko.utils.emptyDomNode(node);\r
- \r
- if ((html !== null) && (html !== undefined)) {\r
- if (typeof html != 'string')\r
- html = html.toString();\r
- \r
- // jQuery contains a lot of sophisticated code to parse arbitrary HTML fragments,\r
- // for example <tr> elements which are not normally allowed to exist on their own.\r
- // If you've referenced jQuery we'll use that rather than duplicating its code.\r
- if (typeof jQuery != 'undefined') {\r
- jQuery(node)['html'](html);\r
- } else {\r
- // ... otherwise, use KO's own parsing logic.\r
- var parsedNodes = ko.utils.parseHtmlFragment(html);\r
- for (var i = 0; i < parsedNodes.length; i++)\r
- node.appendChild(parsedNodes[i]);\r
- } \r
- } \r
- };\r
-})();\r
-\r
-ko.exportSymbol('utils.parseHtmlFragment', ko.utils.parseHtmlFragment);\r
-ko.exportSymbol('utils.setHtml', ko.utils.setHtml);\r
-\r
-ko.memoization = (function () {\r
- var memos = {};\r
-\r
- function randomMax8HexChars() {\r
- return (((1 + Math.random()) * 0x100000000) | 0).toString(16).substring(1);\r
- }\r
- function generateRandomId() {\r
- return randomMax8HexChars() + randomMax8HexChars();\r
- }\r
- function findMemoNodes(rootNode, appendToArray) {\r
- if (!rootNode)\r
- return;\r
- if (rootNode.nodeType == 8) {\r
- var memoId = ko.memoization.parseMemoText(rootNode.nodeValue);\r
- if (memoId != null)\r
- appendToArray.push({ domNode: rootNode, memoId: memoId });\r
- } else if (rootNode.nodeType == 1) {\r
- for (var i = 0, childNodes = rootNode.childNodes, j = childNodes.length; i < j; i++)\r
- findMemoNodes(childNodes[i], appendToArray);\r
- }\r
- }\r
-\r
- return {\r
- memoize: function (callback) {\r
- if (typeof callback != "function")\r
- throw new Error("You can only pass a function to ko.memoization.memoize()");\r
- var memoId = generateRandomId();\r
- memos[memoId] = callback;\r
- return "<!--[ko_memo:" + memoId + "]-->";\r
- },\r
-\r
- unmemoize: function (memoId, callbackParams) {\r
- var callback = memos[memoId];\r
- if (callback === undefined)\r
- throw new Error("Couldn't find any memo with ID " + memoId + ". Perhaps it's already been unmemoized.");\r
- try {\r
- callback.apply(null, callbackParams || []);\r
- return true;\r
- }\r
- finally { delete memos[memoId]; }\r
- },\r
-\r
- unmemoizeDomNodeAndDescendants: function (domNode, extraCallbackParamsArray) {\r
- var memos = [];\r
- findMemoNodes(domNode, memos);\r
- for (var i = 0, j = memos.length; i < j; i++) {\r
- var node = memos[i].domNode;\r
- var combinedParams = [node];\r
- if (extraCallbackParamsArray)\r
- ko.utils.arrayPushAll(combinedParams, extraCallbackParamsArray);\r
- ko.memoization.unmemoize(memos[i].memoId, combinedParams);\r
- node.nodeValue = ""; // Neuter this node so we don't try to unmemoize it again\r
- if (node.parentNode)\r
- 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)\r
- }\r
- },\r
-\r
- parseMemoText: function (memoText) {\r
- var match = memoText.match(/^\[ko_memo\:(.*?)\]$/);\r
- return match ? match[1] : null;\r
- }\r
- };\r
-})();\r
-\r
-ko.exportSymbol('memoization', ko.memoization);\r
-ko.exportSymbol('memoization.memoize', ko.memoization.memoize);\r
-ko.exportSymbol('memoization.unmemoize', ko.memoization.unmemoize);\r
-ko.exportSymbol('memoization.parseMemoText', ko.memoization.parseMemoText);\r
-ko.exportSymbol('memoization.unmemoizeDomNodeAndDescendants', ko.memoization.unmemoizeDomNodeAndDescendants);\r
-ko.extenders = {\r
- 'throttle': function(target, timeout) {\r
- // Throttling means two things:\r
-\r
- // (1) For dependent observables, we throttle *evaluations* so that, no matter how fast its dependencies\r
- // notify updates, the target doesn't re-evaluate (and hence doesn't notify) faster than a certain rate\r
- target['throttleEvaluation'] = timeout;\r
-\r
- // (2) For writable targets (observables, or writable dependent observables), we throttle *writes*\r
- // so the target cannot change value synchronously or faster than a certain rate\r
- var writeTimeoutInstance = null;\r
- return ko.dependentObservable({\r
- 'read': target,\r
- 'write': function(value) {\r
- clearTimeout(writeTimeoutInstance);\r
- writeTimeoutInstance = setTimeout(function() {\r
- target(value);\r
- }, timeout); \r
- }\r
- });\r
- },\r
-\r
- 'notify': function(target, notifyWhen) {\r
- target["equalityComparer"] = notifyWhen == "always" \r
- ? function() { return false } // Treat all values as not equal\r
- : ko.observable["fn"]["equalityComparer"];\r
- return target;\r
- }\r
-};\r
-\r
-function applyExtenders(requestedExtenders) {\r
- var target = this;\r
- if (requestedExtenders) {\r
- for (var key in requestedExtenders) {\r
- var extenderHandler = ko.extenders[key];\r
- if (typeof extenderHandler == 'function') {\r
- target = extenderHandler(target, requestedExtenders[key]);\r
- }\r
- }\r
- }\r
- return target;\r
-}\r
-\r
-ko.exportSymbol('extenders', ko.extenders);\r
-\r
-ko.subscription = function (callback, disposeCallback) {\r
- this.callback = callback;\r
- this.disposeCallback = disposeCallback;\r
- ko.exportProperty(this, 'dispose', this.dispose);\r
-};\r
-ko.subscription.prototype.dispose = function () {\r
- this.isDisposed = true;\r
- this.disposeCallback();\r
-};\r
-\r
-ko.subscribable = function () {\r
- this._subscriptions = {};\r
-\r
- ko.utils.extend(this, ko.subscribable['fn']);\r
- ko.exportProperty(this, 'subscribe', this.subscribe);\r
- ko.exportProperty(this, 'extend', this.extend);\r
- ko.exportProperty(this, 'getSubscriptionsCount', this.getSubscriptionsCount);\r
-}\r
-\r
-var defaultEvent = "change";\r
-\r
-ko.subscribable['fn'] = {\r
- subscribe: function (callback, callbackTarget, event) {\r
- event = event || defaultEvent;\r
- var boundCallback = callbackTarget ? callback.bind(callbackTarget) : callback;\r
-\r
- var subscription = new ko.subscription(boundCallback, function () {\r
- ko.utils.arrayRemoveItem(this._subscriptions[event], subscription);\r
- }.bind(this));\r
-\r
- if (!this._subscriptions[event])\r
- this._subscriptions[event] = [];\r
- this._subscriptions[event].push(subscription);\r
- return subscription;\r
- },\r
-\r
- "notifySubscribers": function (valueToNotify, event) {\r
- event = event || defaultEvent;\r
- if (this._subscriptions[event]) {\r
- ko.utils.arrayForEach(this._subscriptions[event].slice(0), function (subscription) {\r
- // In case a subscription was disposed during the arrayForEach cycle, check\r
- // for isDisposed on each subscription before invoking its callback\r
- if (subscription && (subscription.isDisposed !== true))\r
- subscription.callback(valueToNotify);\r
- });\r
- }\r
- },\r
-\r
- getSubscriptionsCount: function () {\r
- var total = 0;\r
- for (var eventName in this._subscriptions) {\r
- if (this._subscriptions.hasOwnProperty(eventName))\r
- total += this._subscriptions[eventName].length;\r
- }\r
- return total;\r
- },\r
- \r
- extend: applyExtenders\r
-};\r
-\r
-\r
-ko.isSubscribable = function (instance) {\r
- return typeof instance.subscribe == "function" && typeof instance["notifySubscribers"] == "function";\r
-};\r
-\r
-ko.exportSymbol('subscribable', ko.subscribable);\r
-ko.exportSymbol('isSubscribable', ko.isSubscribable);\r
-\r
-ko.dependencyDetection = (function () {\r
- var _frames = [];\r
- \r
- return {\r
- begin: function (callback) {\r
- _frames.push({ callback: callback, distinctDependencies:[] });\r
- },\r
-\r
- end: function () {\r
- _frames.pop();\r
- },\r
-\r
- registerDependency: function (subscribable) {\r
- if (!ko.isSubscribable(subscribable))\r
- throw "Only subscribable things can act as dependencies";\r
- if (_frames.length > 0) {\r
- var topFrame = _frames[_frames.length - 1];\r
- if (ko.utils.arrayIndexOf(topFrame.distinctDependencies, subscribable) >= 0)\r
- return;\r
- topFrame.distinctDependencies.push(subscribable);\r
- topFrame.callback(subscribable);\r
- }\r
- }\r
- };\r
-})();var primitiveTypes = { 'undefined':true, 'boolean':true, 'number':true, 'string':true };\r
-\r
-ko.observable = function (initialValue) {\r
- var _latestValue = initialValue;\r
-\r
- function observable() {\r
- if (arguments.length > 0) {\r
- // Write \r
- \r
- // Ignore writes if the value hasn't changed\r
- if ((!observable['equalityComparer']) || !observable['equalityComparer'](_latestValue, arguments[0])) {\r
- observable.valueWillMutate();\r
- _latestValue = arguments[0];\r
- observable.valueHasMutated();\r
- }\r
- return this; // Permits chained assignments\r
- }\r
- else {\r
- // Read\r
- ko.dependencyDetection.registerDependency(observable); // The caller only needs to be notified of changes if they did a "read" operation\r
- return _latestValue;\r
- }\r
- }\r
- ko.subscribable.call(observable);\r
- observable.valueHasMutated = function () { observable["notifySubscribers"](_latestValue); }\r
- observable.valueWillMutate = function () { observable["notifySubscribers"](_latestValue, "beforeChange"); }\r
- ko.utils.extend(observable, ko.observable['fn']);\r
-\r
- ko.exportProperty(observable, "valueHasMutated", observable.valueHasMutated);\r
- ko.exportProperty(observable, "valueWillMutate", observable.valueWillMutate);\r
- \r
- return observable;\r
-}\r
-\r
-ko.observable['fn'] = {\r
- __ko_proto__: ko.observable,\r
-\r
- "equalityComparer": function valuesArePrimitiveAndEqual(a, b) {\r
- var oldValueIsPrimitive = (a === null) || (typeof(a) in primitiveTypes);\r
- return oldValueIsPrimitive ? (a === b) : false;\r
- }\r
-};\r
-\r
-ko.isObservable = function (instance) {\r
- if ((instance === null) || (instance === undefined) || (instance.__ko_proto__ === undefined)) return false;\r
- if (instance.__ko_proto__ === ko.observable) return true;\r
- return ko.isObservable(instance.__ko_proto__); // Walk the prototype chain\r
-}\r
-ko.isWriteableObservable = function (instance) {\r
- // Observable\r
- if ((typeof instance == "function") && instance.__ko_proto__ === ko.observable)\r
- return true;\r
- // Writeable dependent observable\r
- if ((typeof instance == "function") && (instance.__ko_proto__ === ko.dependentObservable) && (instance.hasWriteFunction))\r
- return true;\r
- // Anything else\r
- return false;\r
-}\r
-\r
-\r
-ko.exportSymbol('observable', ko.observable);\r
-ko.exportSymbol('isObservable', ko.isObservable);\r
-ko.exportSymbol('isWriteableObservable', ko.isWriteableObservable);\r
-ko.observableArray = function (initialValues) {\r
- if (arguments.length == 0) {\r
- // Zero-parameter constructor initializes to empty array\r
- initialValues = [];\r
- }\r
- if ((initialValues !== null) && (initialValues !== undefined) && !('length' in initialValues))\r
- throw new Error("The argument passed when initializing an observable array must be an array, or null, or undefined.");\r
- \r
- var result = new ko.observable(initialValues);\r
- ko.utils.extend(result, ko.observableArray['fn']);\r
- \r
- ko.exportProperty(result, "remove", result.remove);\r
- ko.exportProperty(result, "removeAll", result.removeAll);\r
- ko.exportProperty(result, "destroy", result.destroy);\r
- ko.exportProperty(result, "destroyAll", result.destroyAll);\r
- ko.exportProperty(result, "indexOf", result.indexOf);\r
- ko.exportProperty(result, "replace", result.replace);\r
- \r
- return result;\r
-}\r
-\r
-ko.observableArray['fn'] = {\r
- remove: function (valueOrPredicate) {\r
- var underlyingArray = this();\r
- var removedValues = [];\r
- var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; };\r
- for (var i = 0; i < underlyingArray.length; i++) {\r
- var value = underlyingArray[i];\r
- if (predicate(value)) {\r
- if (removedValues.length === 0) {\r
- this.valueWillMutate();\r
- }\r
- removedValues.push(value);\r
- underlyingArray.splice(i, 1);\r
- i--;\r
- }\r
- }\r
- if (removedValues.length) {\r
- this.valueHasMutated();\r
- }\r
- return removedValues;\r
- },\r
-\r
- removeAll: function (arrayOfValues) {\r
- // If you passed zero args, we remove everything\r
- if (arrayOfValues === undefined) {\r
- var underlyingArray = this();\r
- var allValues = underlyingArray.slice(0);\r
- this.valueWillMutate();\r
- underlyingArray.splice(0, underlyingArray.length);\r
- this.valueHasMutated();\r
- return allValues;\r
- }\r
- // If you passed an arg, we interpret it as an array of entries to remove\r
- if (!arrayOfValues)\r
- return [];\r
- return this.remove(function (value) {\r
- return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;\r
- });\r
- },\r
- \r
- destroy: function (valueOrPredicate) {\r
- var underlyingArray = this();\r
- var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; };\r
- this.valueWillMutate();\r
- for (var i = underlyingArray.length - 1; i >= 0; i--) {\r
- var value = underlyingArray[i];\r
- if (predicate(value))\r
- underlyingArray[i]["_destroy"] = true;\r
- }\r
- this.valueHasMutated();\r
- },\r
- \r
- destroyAll: function (arrayOfValues) {\r
- // If you passed zero args, we destroy everything\r
- if (arrayOfValues === undefined)\r
- return this.destroy(function() { return true });\r
- \r
- // If you passed an arg, we interpret it as an array of entries to destroy\r
- if (!arrayOfValues)\r
- return [];\r
- return this.destroy(function (value) {\r
- return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;\r
- }); \r
- },\r
-\r
- indexOf: function (item) {\r
- var underlyingArray = this();\r
- return ko.utils.arrayIndexOf(underlyingArray, item);\r
- },\r
- \r
- replace: function(oldItem, newItem) {\r
- var index = this.indexOf(oldItem);\r
- if (index >= 0) {\r
- this.valueWillMutate();\r
- this()[index] = newItem;\r
- this.valueHasMutated();\r
- }\r
- } \r
-}\r
-\r
-// Populate ko.observableArray.fn with read/write functions from native arrays\r
-ko.utils.arrayForEach(["pop", "push", "reverse", "shift", "sort", "splice", "unshift"], function (methodName) {\r
- ko.observableArray['fn'][methodName] = function () { \r
- var underlyingArray = this();\r
- this.valueWillMutate();\r
- var methodCallResult = underlyingArray[methodName].apply(underlyingArray, arguments);\r
- this.valueHasMutated();\r
- return methodCallResult;\r
- };\r
-});\r
-\r
-// Populate ko.observableArray.fn with read-only functions from native arrays\r
-ko.utils.arrayForEach(["slice"], function (methodName) {\r
- ko.observableArray['fn'][methodName] = function () {\r
- var underlyingArray = this();\r
- return underlyingArray[methodName].apply(underlyingArray, arguments);\r
- };\r
-});\r
-\r
-ko.exportSymbol('observableArray', ko.observableArray);\r
-function prepareOptions(evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) {\r
- if (evaluatorFunctionOrOptions && typeof evaluatorFunctionOrOptions == "object") {\r
- // Single-parameter syntax - everything is on this "options" param\r
- options = evaluatorFunctionOrOptions;\r
- } else {\r
- // Multi-parameter syntax - construct the options according to the params passed\r
- options = options || {};\r
- options["read"] = evaluatorFunctionOrOptions || options["read"];\r
- }\r
- // By here, "options" is always non-null\r
- \r
- if (typeof options["read"] != "function")\r
- throw "Pass a function that returns the value of the dependentObservable";\r
- \r
- return options; \r
-}\r
-\r
-ko.dependentObservable = function (evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) {\r
- var _latestValue, \r
- _hasBeenEvaluated = false, \r
- options = prepareOptions(evaluatorFunctionOrOptions, evaluatorFunctionTarget, options);\r
-\r
- // Build "disposeWhenNodeIsRemoved" and "disposeWhenNodeIsRemovedCallback" option values\r
- // (Note: "disposeWhenNodeIsRemoved" option both proactively disposes as soon as the node is removed using ko.removeNode(),\r
- // plus adds a "disposeWhen" callback that, on each evaluation, disposes if the node was removed by some other means.)\r
- var disposeWhenNodeIsRemoved = (typeof options["disposeWhenNodeIsRemoved"] == "object") ? options["disposeWhenNodeIsRemoved"] : null;\r
- var disposeWhenNodeIsRemovedCallback = null;\r
- if (disposeWhenNodeIsRemoved) {\r
- disposeWhenNodeIsRemovedCallback = function() { dependentObservable.dispose() };\r
- ko.utils.domNodeDisposal.addDisposeCallback(disposeWhenNodeIsRemoved, disposeWhenNodeIsRemovedCallback);\r
- var existingDisposeWhenFunction = options["disposeWhen"];\r
- options["disposeWhen"] = function () {\r
- return (!ko.utils.domNodeIsAttachedToDocument(disposeWhenNodeIsRemoved)) \r
- || ((typeof existingDisposeWhenFunction == "function") && existingDisposeWhenFunction());\r
- } \r
- }\r
- \r
- var _subscriptionsToDependencies = [];\r
- function disposeAllSubscriptionsToDependencies() {\r
- ko.utils.arrayForEach(_subscriptionsToDependencies, function (subscription) {\r
- subscription.dispose();\r
- });\r
- _subscriptionsToDependencies = [];\r
- }\r
- \r
- var evaluationTimeoutInstance = null;\r
- function evaluatePossiblyAsync() {\r
- var throttleEvaluationTimeout = dependentObservable['throttleEvaluation'];\r
- if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {\r
- clearTimeout(evaluationTimeoutInstance);\r
- evaluationTimeoutInstance = setTimeout(evaluateImmediate, throttleEvaluationTimeout);\r
- } else\r
- evaluateImmediate();\r
- }\r
-\r
- function evaluateImmediate() {\r
- // Don't dispose on first evaluation, because the "disposeWhen" callback might\r
- // e.g., dispose when the associated DOM element isn't in the doc, and it's not\r
- // going to be in the doc until *after* the first evaluation\r
- if ((_hasBeenEvaluated) && typeof options["disposeWhen"] == "function") {\r
- if (options["disposeWhen"]()) {\r
- dependentObservable.dispose();\r
- return;\r
- }\r
- }\r
-\r
- try {\r
- disposeAllSubscriptionsToDependencies();\r
- ko.dependencyDetection.begin(function(subscribable) {\r
- _subscriptionsToDependencies.push(subscribable.subscribe(evaluatePossiblyAsync));\r
- });\r
- var valueForThis = options["owner"] || evaluatorFunctionTarget; // If undefined, it will default to "window" by convention. This might change in the future.\r
- var newValue = options["read"].call(valueForThis);\r
- dependentObservable["notifySubscribers"](_latestValue, "beforeChange");\r
- _latestValue = newValue;\r
- } finally {\r
- ko.dependencyDetection.end();\r
- }\r
-\r
- dependentObservable["notifySubscribers"](_latestValue);\r
- _hasBeenEvaluated = true;\r
- }\r
-\r
- function dependentObservable() {\r
- if (arguments.length > 0) {\r
- if (typeof options["write"] === "function") {\r
- // Writing a value\r
- var valueForThis = options["owner"] || evaluatorFunctionTarget; // If undefined, it will default to "window" by convention. This might change in the future.\r
- options["write"].apply(valueForThis, arguments);\r
- } else {\r
- 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.";\r
- }\r
- } else {\r
- // Reading the value\r
- if (!_hasBeenEvaluated)\r
- evaluateImmediate();\r
- ko.dependencyDetection.registerDependency(dependentObservable);\r
- return _latestValue;\r
- }\r
- }\r
- dependentObservable.getDependenciesCount = function () { return _subscriptionsToDependencies.length; }\r
- dependentObservable.hasWriteFunction = typeof options["write"] === "function";\r
- dependentObservable.dispose = function () {\r
- if (disposeWhenNodeIsRemoved)\r
- ko.utils.domNodeDisposal.removeDisposeCallback(disposeWhenNodeIsRemoved, disposeWhenNodeIsRemovedCallback);\r
- disposeAllSubscriptionsToDependencies();\r
- };\r
- \r
- ko.subscribable.call(dependentObservable);\r
- ko.utils.extend(dependentObservable, ko.dependentObservable['fn']);\r
-\r
- if (options['deferEvaluation'] !== true)\r
- evaluateImmediate();\r
- \r
- ko.exportProperty(dependentObservable, 'dispose', dependentObservable.dispose);\r
- ko.exportProperty(dependentObservable, 'getDependenciesCount', dependentObservable.getDependenciesCount);\r
- \r
- return dependentObservable;\r
-};\r
-\r
-ko.dependentObservable['fn'] = {\r
- __ko_proto__: ko.dependentObservable\r
-};\r
-\r
-ko.dependentObservable.__ko_proto__ = ko.observable;\r
-\r
-ko.exportSymbol('dependentObservable', ko.dependentObservable);\r
-ko.exportSymbol('computed', ko.dependentObservable); // Make "ko.computed" an alias for "ko.dependentObservable"\r
-\r
-(function() { \r
- var maxNestedObservableDepth = 10; // Escape the (unlikely) pathalogical case where an observable's current value is itself (or similar reference cycle)\r
- \r
- ko.toJS = function(rootObject) {\r
- if (arguments.length == 0)\r
- throw new Error("When calling ko.toJS, pass the object you want to convert.");\r
- \r
- // We just unwrap everything at every level in the object graph\r
- return mapJsObjectGraph(rootObject, function(valueToMap) {\r
- // Loop because an observable's value might in turn be another observable wrapper\r
- for (var i = 0; ko.isObservable(valueToMap) && (i < maxNestedObservableDepth); i++)\r
- valueToMap = valueToMap();\r
- return valueToMap;\r
- });\r
- };\r
-\r
- ko.toJSON = function(rootObject) {\r
- var plainJavaScriptObject = ko.toJS(rootObject);\r
- return ko.utils.stringifyJson(plainJavaScriptObject);\r
- };\r
- \r
- function mapJsObjectGraph(rootObject, mapInputCallback, visitedObjects) {\r
- visitedObjects = visitedObjects || new objectLookup();\r
- \r
- rootObject = mapInputCallback(rootObject);\r
- var canHaveProperties = (typeof rootObject == "object") && (rootObject !== null) && (rootObject !== undefined) && (!(rootObject instanceof Date));\r
- if (!canHaveProperties)\r
- return rootObject;\r
- \r
- var outputProperties = rootObject instanceof Array ? [] : {};\r
- visitedObjects.save(rootObject, outputProperties); \r
- \r
- visitPropertiesOrArrayEntries(rootObject, function(indexer) {\r
- var propertyValue = mapInputCallback(rootObject[indexer]);\r
- \r
- switch (typeof propertyValue) {\r
- case "boolean":\r
- case "number":\r
- case "string":\r
- case "function":\r
- outputProperties[indexer] = propertyValue;\r
- break;\r
- case "object":\r
- case "undefined": \r
- var previouslyMappedValue = visitedObjects.get(propertyValue);\r
- outputProperties[indexer] = (previouslyMappedValue !== undefined)\r
- ? previouslyMappedValue\r
- : mapJsObjectGraph(propertyValue, mapInputCallback, visitedObjects);\r
- break; \r
- }\r
- });\r
- \r
- return outputProperties;\r
- }\r
- \r
- function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {\r
- if (rootObject instanceof Array) {\r
- for (var i = 0; i < rootObject.length; i++)\r
- visitorCallback(i);\r
- } else {\r
- for (var propertyName in rootObject)\r
- visitorCallback(propertyName);\r
- }\r
- }; \r
- \r
- function objectLookup() {\r
- var keys = [];\r
- var values = [];\r
- this.save = function(key, value) {\r
- var existingIndex = ko.utils.arrayIndexOf(keys, key);\r
- if (existingIndex >= 0)\r
- values[existingIndex] = value;\r
- else {\r
- keys.push(key);\r
- values.push(value); \r
- } \r
- };\r
- this.get = function(key) {\r
- var existingIndex = ko.utils.arrayIndexOf(keys, key);\r
- return (existingIndex >= 0) ? values[existingIndex] : undefined;\r
- };\r
- };\r
-})();\r
-\r
-ko.exportSymbol('toJS', ko.toJS);\r
-ko.exportSymbol('toJSON', ko.toJSON);(function () {\r
- var hasDomDataExpandoProperty = '__ko__hasDomDataOptionValue__';\r
-\r
- // Normally, SELECT elements and their OPTIONs can only take value of type 'string' (because the values\r
- // are stored on DOM attributes). ko.selectExtensions provides a way for SELECTs/OPTIONs to have values\r
- // that are arbitrary objects. This is very convenient when implementing things like cascading dropdowns.\r
- ko.selectExtensions = {\r
- readValue : function(element) {\r
- if (element.tagName == 'OPTION') {\r
- if (element[hasDomDataExpandoProperty] === true)\r
- return ko.utils.domData.get(element, ko.bindingHandlers.options.optionValueDomDataKey);\r
- return element.getAttribute("value");\r
- } else if (element.tagName == 'SELECT')\r
- return element.selectedIndex >= 0 ? ko.selectExtensions.readValue(element.options[element.selectedIndex]) : undefined;\r
- else\r
- return element.value;\r
- },\r
- \r
- writeValue: function(element, value) {\r
- if (element.tagName == 'OPTION') {\r
- switch(typeof value) {\r
- case "string":\r
- ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, undefined);\r
- if (hasDomDataExpandoProperty in element) { // IE <= 8 throws errors if you delete non-existent properties from a DOM node\r
- delete element[hasDomDataExpandoProperty];\r
- }\r
- element.value = value; \r
- break;\r
- default:\r
- // Store arbitrary object using DomData\r
- ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, value);\r
- element[hasDomDataExpandoProperty] = true;\r
-\r
- // Special treatment of numbers is just for backward compatibility. KO 1.2.1 wrote numerical values to element.value.\r
- element.value = typeof value === "number" ? value : "";\r
- break;\r
- } \r
- } else if (element.tagName == 'SELECT') {\r
- for (var i = element.options.length - 1; i >= 0; i--) {\r
- if (ko.selectExtensions.readValue(element.options[i]) == value) {\r
- element.selectedIndex = i;\r
- break;\r
- }\r
- }\r
- } else {\r
- if ((value === null) || (value === undefined))\r
- value = "";\r
- element.value = value;\r
- }\r
- }\r
- }; \r
-})();\r
-\r
-ko.exportSymbol('selectExtensions', ko.selectExtensions);\r
-ko.exportSymbol('selectExtensions.readValue', ko.selectExtensions.readValue);\r
-ko.exportSymbol('selectExtensions.writeValue', ko.selectExtensions.writeValue);\r
-\r
-ko.jsonExpressionRewriting = (function () {\r
- var restoreCapturedTokensRegex = /\@ko_token_(\d+)\@/g;\r
- var javaScriptAssignmentTarget = /^[\_$a-z][\_$a-z0-9]*(\[.*?\])*(\.[\_$a-z][\_$a-z0-9]*(\[.*?\])*)*$/i;\r
- var javaScriptReservedWords = ["true", "false"];\r
-\r
- function restoreTokens(string, tokens) {\r
- var prevValue = null;\r
- while (string != prevValue) { // Keep restoring tokens until it no longer makes a difference (they may be nested)\r
- prevValue = string;\r
- string = string.replace(restoreCapturedTokensRegex, function (match, tokenIndex) {\r
- return tokens[tokenIndex];\r
- });\r
- }\r
- return string;\r
- }\r
-\r
- function isWriteableValue(expression) {\r
- if (ko.utils.arrayIndexOf(javaScriptReservedWords, ko.utils.stringTrim(expression).toLowerCase()) >= 0)\r
- return false;\r
- return expression.match(javaScriptAssignmentTarget) !== null;\r
- }\r
-\r
- function ensureQuoted(key) {\r
- var trimmedKey = ko.utils.stringTrim(key);\r
- switch (trimmedKey.length && trimmedKey.charAt(0)) {\r
- case "'":\r
- case '"': \r
- return key;\r
- default:\r
- return "'" + trimmedKey + "'";\r
- }\r
- }\r
-\r
- return {\r
- bindingRewriteValidators: [],\r
- \r
- parseObjectLiteral: function(objectLiteralString) {\r
- // A full tokeniser+lexer would add too much weight to this library, so here's a simple parser\r
- // that is sufficient just to split an object literal string into a set of top-level key-value pairs\r
-\r
- var str = ko.utils.stringTrim(objectLiteralString);\r
- if (str.length < 3)\r
- return [];\r
- if (str.charAt(0) === "{")// Ignore any braces surrounding the whole object literal\r
- str = str.substring(1, str.length - 1);\r
-\r
- // Pull out any string literals and regex literals\r
- var tokens = [];\r
- var tokenStart = null, tokenEndChar;\r
- for (var position = 0; position < str.length; position++) {\r
- var c = str.charAt(position);\r
- if (tokenStart === null) {\r
- switch (c) {\r
- case '"':\r
- case "'":\r
- case "/":\r
- tokenStart = position;\r
- tokenEndChar = c;\r
- break;\r
- }\r
- } else if ((c == tokenEndChar) && (str.charAt(position - 1) !== "\\")) {\r
- var token = str.substring(tokenStart, position + 1);\r
- tokens.push(token);\r
- var replacement = "@ko_token_" + (tokens.length - 1) + "@";\r
- str = str.substring(0, tokenStart) + replacement + str.substring(position + 1);\r
- position -= (token.length - replacement.length);\r
- tokenStart = null;\r
- }\r
- }\r
-\r
- // Next pull out balanced paren, brace, and bracket blocks\r
- tokenStart = null;\r
- tokenEndChar = null;\r
- var tokenDepth = 0, tokenStartChar = null;\r
- for (var position = 0; position < str.length; position++) {\r
- var c = str.charAt(position);\r
- if (tokenStart === null) {\r
- switch (c) {\r
- case "{": tokenStart = position; tokenStartChar = c;\r
- tokenEndChar = "}";\r
- break;\r
- case "(": tokenStart = position; tokenStartChar = c;\r
- tokenEndChar = ")";\r
- break;\r
- case "[": tokenStart = position; tokenStartChar = c;\r
- tokenEndChar = "]";\r
- break;\r
- }\r
- }\r
-\r
- if (c === tokenStartChar)\r
- tokenDepth++;\r
- else if (c === tokenEndChar) {\r
- tokenDepth--;\r
- if (tokenDepth === 0) {\r
- var token = str.substring(tokenStart, position + 1);\r
- tokens.push(token);\r
- var replacement = "@ko_token_" + (tokens.length - 1) + "@";\r
- str = str.substring(0, tokenStart) + replacement + str.substring(position + 1);\r
- position -= (token.length - replacement.length);\r
- tokenStart = null; \r
- }\r
- }\r
- }\r
-\r
- // Now we can safely split on commas to get the key/value pairs\r
- var result = [];\r
- var keyValuePairs = str.split(",");\r
- for (var i = 0, j = keyValuePairs.length; i < j; i++) {\r
- var pair = keyValuePairs[i];\r
- var colonPos = pair.indexOf(":");\r
- if ((colonPos > 0) && (colonPos < pair.length - 1)) {\r
- var key = pair.substring(0, colonPos);\r
- var value = pair.substring(colonPos + 1);\r
- result.push({ 'key': restoreTokens(key, tokens), 'value': restoreTokens(value, tokens) });\r
- } else {\r
- result.push({ 'unknown': restoreTokens(pair, tokens) });\r
- }\r
- }\r
- return result; \r
- },\r
-\r
- insertPropertyAccessorsIntoJson: function (objectLiteralStringOrKeyValueArray) {\r
- var keyValueArray = typeof objectLiteralStringOrKeyValueArray === "string" \r
- ? ko.jsonExpressionRewriting.parseObjectLiteral(objectLiteralStringOrKeyValueArray)\r
- : objectLiteralStringOrKeyValueArray;\r
- var resultStrings = [], propertyAccessorResultStrings = [];\r
-\r
- var keyValueEntry;\r
- for (var i = 0; keyValueEntry = keyValueArray[i]; i++) {\r
- if (resultStrings.length > 0)\r
- resultStrings.push(",");\r
-\r
- if (keyValueEntry['key']) {\r
- var quotedKey = ensureQuoted(keyValueEntry['key']), val = keyValueEntry['value'];\r
- resultStrings.push(quotedKey);\r
- resultStrings.push(":"); \r
- resultStrings.push(val);\r
-\r
- if (isWriteableValue(ko.utils.stringTrim(val))) {\r
- if (propertyAccessorResultStrings.length > 0)\r
- propertyAccessorResultStrings.push(", ");\r
- propertyAccessorResultStrings.push(quotedKey + " : function(__ko_value) { " + val + " = __ko_value; }");\r
- } \r
- } else if (keyValueEntry['unknown']) {\r
- resultStrings.push(keyValueEntry['unknown']);\r
- }\r
- }\r
-\r
- var combinedResult = resultStrings.join("");\r
- if (propertyAccessorResultStrings.length > 0) {\r
- var allPropertyAccessors = propertyAccessorResultStrings.join("");\r
- combinedResult = combinedResult + ", '_ko_property_writers' : { " + allPropertyAccessors + " } "; \r
- }\r
-\r
- return combinedResult;\r
- },\r
-\r
- keyValueArrayContainsKey: function(keyValueArray, key) {\r
- for (var i = 0; i < keyValueArray.length; i++)\r
- if (ko.utils.stringTrim(keyValueArray[i]['key']) == key)\r
- return true; \r
- return false;\r
- }\r
- };\r
-})();\r
-\r
-ko.exportSymbol('jsonExpressionRewriting', ko.jsonExpressionRewriting);\r
-ko.exportSymbol('jsonExpressionRewriting.bindingRewriteValidators', ko.jsonExpressionRewriting.bindingRewriteValidators);\r
-ko.exportSymbol('jsonExpressionRewriting.parseObjectLiteral', ko.jsonExpressionRewriting.parseObjectLiteral);\r
-ko.exportSymbol('jsonExpressionRewriting.insertPropertyAccessorsIntoJson', ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson);\r
-(function() {\r
- // "Virtual elements" is an abstraction on top of the usual DOM API which understands the notion that comment nodes\r
- // may be used to represent hierarchy (in addition to the DOM's natural hierarchy). \r
- // If you call the DOM-manipulating functions on ko.virtualElements, you will be able to read and write the state \r
- // of that virtual hierarchy\r
- // \r
- // The point of all this is to support containerless templates (e.g., <!-- ko foreach:someCollection -->blah<!-- /ko -->)\r
- // without having to scatter special cases all over the binding and templating code.\r
-\r
- // IE 9 cannot reliably read the "nodeValue" property of a comment node (see https://github.com/SteveSanderson/knockout/issues/186)\r
- // but it does give them a nonstandard alternative property called "text" that it can read reliably. Other browsers don't have that property.\r
- // So, use node.text where available, and node.nodeValue elsewhere\r
- var commentNodesHaveTextProperty = document.createComment("test").text === "<!--test-->";\r
-\r
- var startCommentRegex = commentNodesHaveTextProperty ? /^<!--\s*ko\s+(.*\:.*)\s*-->$/ : /^\s*ko\s+(.*\:.*)\s*$/;\r
- var endCommentRegex = commentNodesHaveTextProperty ? /^<!--\s*\/ko\s*-->$/ : /^\s*\/ko\s*$/;\r
- var htmlTagsWithOptionallyClosingChildren = { 'ul': true, 'ol': true };\r
-\r
- function isStartComment(node) {\r
- return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(startCommentRegex);\r
- }\r
-\r
- function isEndComment(node) {\r
- return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(endCommentRegex);\r
- }\r
-\r
- function getVirtualChildren(startComment, allowUnbalanced) {\r
- var currentNode = startComment;\r
- var depth = 1;\r
- var children = [];\r
- while (currentNode = currentNode.nextSibling) {\r
- if (isEndComment(currentNode)) {\r
- depth--;\r
- if (depth === 0)\r
- return children;\r
- }\r
-\r
- children.push(currentNode);\r
-\r
- if (isStartComment(currentNode))\r
- depth++;\r
- }\r
- if (!allowUnbalanced)\r
- throw new Error("Cannot find closing comment tag to match: " + startComment.nodeValue);\r
- return null;\r
- }\r
-\r
- function getMatchingEndComment(startComment, allowUnbalanced) {\r
- var allVirtualChildren = getVirtualChildren(startComment, allowUnbalanced);\r
- if (allVirtualChildren) {\r
- if (allVirtualChildren.length > 0)\r
- return allVirtualChildren[allVirtualChildren.length - 1].nextSibling;\r
- return startComment.nextSibling;\r
- } else\r
- return null; // Must have no matching end comment, and allowUnbalanced is true\r
- }\r
-\r
- function nodeArrayToText(nodeArray, cleanNodes) {\r
- var texts = [];\r
- for (var i = 0, j = nodeArray.length; i < j; i++) {\r
- if (cleanNodes)\r
- ko.utils.domNodeDisposal.cleanNode(nodeArray[i]);\r
- texts.push(ko.utils.outerHTML(nodeArray[i]));\r
- }\r
- return String.prototype.concat.apply("", texts);\r
- } \r
-\r
- function getUnbalancedChildTags(node) {\r
- // e.g., from <div>OK</div><!-- ko blah --><span>Another</span>, returns: <!-- ko blah --><span>Another</span>\r
- // from <div>OK</div><!-- /ko --><!-- /ko -->, returns: <!-- /ko --><!-- /ko -->\r
- var childNode = node.firstChild, captureRemaining = null;\r
- if (childNode) {\r
- do {\r
- if (captureRemaining) // We already hit an unbalanced node and are now just scooping up all subsequent nodes\r
- captureRemaining.push(childNode);\r
- else if (isStartComment(childNode)) {\r
- var matchingEndComment = getMatchingEndComment(childNode, /* allowUnbalanced: */ true);\r
- if (matchingEndComment) // It's a balanced tag, so skip immediately to the end of this virtual set\r
- childNode = matchingEndComment;\r
- else\r
- captureRemaining = [childNode]; // It's unbalanced, so start capturing from this point\r
- } else if (isEndComment(childNode)) {\r
- captureRemaining = [childNode]; // It's unbalanced (if it wasn't, we'd have skipped over it already), so start capturing\r
- }\r
- } while (childNode = childNode.nextSibling);\r
- }\r
- return captureRemaining;\r
- }\r
-\r
- ko.virtualElements = {\r
- allowedBindings: {},\r
-\r
- childNodes: function(node) {\r
- return isStartComment(node) ? getVirtualChildren(node) : node.childNodes;\r
- },\r
-\r
- emptyNode: function(node) {\r
- if (!isStartComment(node))\r
- ko.utils.emptyDomNode(node);\r
- else {\r
- var virtualChildren = ko.virtualElements.childNodes(node);\r
- for (var i = 0, j = virtualChildren.length; i < j; i++)\r
- ko.removeNode(virtualChildren[i]);\r
- }\r
- },\r
-\r
- setDomNodeChildren: function(node, childNodes) {\r
- if (!isStartComment(node))\r
- ko.utils.setDomNodeChildren(node, childNodes);\r
- else {\r
- ko.virtualElements.emptyNode(node);\r
- var endCommentNode = node.nextSibling; // Must be the next sibling, as we just emptied the children\r
- for (var i = 0, j = childNodes.length; i < j; i++)\r
- endCommentNode.parentNode.insertBefore(childNodes[i], endCommentNode);\r
- }\r
- },\r
-\r
- prepend: function(containerNode, nodeToPrepend) {\r
- if (!isStartComment(containerNode)) {\r
- if (containerNode.firstChild)\r
- containerNode.insertBefore(nodeToPrepend, containerNode.firstChild);\r
- else\r
- containerNode.appendChild(nodeToPrepend); \r
- } else {\r
- // Start comments must always have a parent and at least one following sibling (the end comment)\r
- containerNode.parentNode.insertBefore(nodeToPrepend, containerNode.nextSibling);\r
- }\r
- },\r
-\r
- insertAfter: function(containerNode, nodeToInsert, insertAfterNode) {\r
- if (!isStartComment(containerNode)) {\r
- // Insert after insertion point\r
- if (insertAfterNode.nextSibling)\r
- containerNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);\r
- else\r
- containerNode.appendChild(nodeToInsert); \r
- } else {\r
- // Children of start comments must always have a parent and at least one following sibling (the end comment)\r
- containerNode.parentNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);\r
- } \r
- },\r
-\r
- nextSibling: function(node) {\r
- if (!isStartComment(node)) {\r
- if (node.nextSibling && isEndComment(node.nextSibling))\r
- return undefined;\r
- return node.nextSibling;\r
- } else {\r
- return getMatchingEndComment(node).nextSibling;\r
- }\r
- },\r
-\r
- virtualNodeBindingValue: function(node) {\r
- var regexMatch = isStartComment(node);\r
- return regexMatch ? regexMatch[1] : null; \r
- },\r
-\r
- extractAnonymousTemplateIfVirtualElement: function(node) {\r
- if (ko.virtualElements.virtualNodeBindingValue(node)) {\r
- // Empty out the virtual children, and associate "node" with an anonymous template matching its previous virtual children\r
- var virtualChildren = ko.virtualElements.childNodes(node);\r
- var anonymousTemplateText = nodeArrayToText(virtualChildren, true);\r
- ko.virtualElements.emptyNode(node);\r
- new ko.templateSources.anonymousTemplate(node).text(anonymousTemplateText);\r
- }\r
- },\r
- \r
- normaliseVirtualElementDomStructure: function(elementVerified) {\r
- // Workaround for https://github.com/SteveSanderson/knockout/issues/155 \r
- // (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\r
- // that are direct descendants of <ul> into the preceding <li>)\r
- if (!htmlTagsWithOptionallyClosingChildren[elementVerified.tagName.toLowerCase()])\r
- return;\r
- \r
- // Scan immediate children to see if they contain unbalanced comment tags. If they do, those comment tags\r
- // must be intended to appear *after* that child, so move them there.\r
- var childNode = elementVerified.firstChild;\r
- if (childNode) {\r
- do {\r
- if (childNode.nodeType === 1) {\r
- var unbalancedTags = getUnbalancedChildTags(childNode);\r
- if (unbalancedTags) {\r
- // Fix up the DOM by moving the unbalanced tags to where they most likely were intended to be placed - *after* the child\r
- var nodeToInsertBefore = childNode.nextSibling;\r
- for (var i = 0; i < unbalancedTags.length; i++) {\r
- if (nodeToInsertBefore)\r
- elementVerified.insertBefore(unbalancedTags[i], nodeToInsertBefore);\r
- else\r
- elementVerified.appendChild(unbalancedTags[i]);\r
- }\r
- }\r
- }\r
- } while (childNode = childNode.nextSibling);\r
- }\r
- } \r
- }; \r
-})();\r
-(function() {\r
- var defaultBindingAttributeName = "data-bind";\r
-\r
- ko.bindingProvider = function() {\r
- this.bindingCache = {};\r
- };\r
-\r
- ko.utils.extend(ko.bindingProvider.prototype, {\r
- 'nodeHasBindings': function(node) {\r
- switch (node.nodeType) {\r
- case 1: return node.getAttribute(defaultBindingAttributeName) != null; // Element\r
- case 8: return ko.virtualElements.virtualNodeBindingValue(node) != null; // Comment node\r
- default: return false;\r
- }\r
- },\r
-\r
- 'getBindings': function(node, bindingContext) {\r
- var bindingsString = this['getBindingsString'](node, bindingContext);\r
- return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext) : null;\r
- },\r
-\r
- // The following function is only used internally by this default provider.\r
- // It's not part of the interface definition for a general binding provider.\r
- 'getBindingsString': function(node, bindingContext) {\r
- switch (node.nodeType) {\r
- case 1: return node.getAttribute(defaultBindingAttributeName); // Element\r
- case 8: return ko.virtualElements.virtualNodeBindingValue(node); // Comment node\r
- default: return null;\r
- }\r
- },\r
-\r
- // The following function is only used internally by this default provider.\r
- // It's not part of the interface definition for a general binding provider.\r
- 'parseBindingsString': function(bindingsString, bindingContext) {\r
- try {\r
- var viewModel = bindingContext['$data'],\r
- scopes = (typeof viewModel == 'object' && viewModel != null) ? [viewModel, bindingContext] : [bindingContext],\r
- bindingFunction = createBindingsStringEvaluatorViaCache(bindingsString, scopes.length, this.bindingCache);\r
- return bindingFunction(scopes);\r
- } catch (ex) {\r
- throw new Error("Unable to parse bindings.\nMessage: " + ex + ";\nBindings value: " + bindingsString);\r
- } \r
- }\r
- });\r
-\r
- ko.bindingProvider['instance'] = new ko.bindingProvider();\r
-\r
- function createBindingsStringEvaluatorViaCache(bindingsString, scopesCount, cache) {\r
- var cacheKey = scopesCount + '_' + bindingsString;\r
- return cache[cacheKey] \r
- || (cache[cacheKey] = createBindingsStringEvaluator(bindingsString, scopesCount));\r
- }\r
-\r
- function createBindingsStringEvaluator(bindingsString, scopesCount) {\r
- var rewrittenBindings = " { " + ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson(bindingsString) + " } ";\r
- return ko.utils.buildEvalWithinScopeFunction(rewrittenBindings, scopesCount);\r
- } \r
-})();\r
-\r
-ko.exportSymbol('bindingProvider', ko.bindingProvider);\r
-(function () {\r
- ko.bindingHandlers = {};\r
-\r
- ko.bindingContext = function(dataItem, parentBindingContext) {\r
- this['$data'] = dataItem;\r
- if (parentBindingContext) {\r
- this['$parent'] = parentBindingContext['$data'];\r
- this['$parents'] = (parentBindingContext['$parents'] || []).slice(0);\r
- this['$parents'].unshift(this['$parent']);\r
- this['$root'] = parentBindingContext['$root'];\r
- } else {\r
- this['$parents'] = [];\r
- this['$root'] = dataItem; \r
- }\r
- }\r
- ko.bindingContext.prototype['createChildContext'] = function (dataItem) {\r
- return new ko.bindingContext(dataItem, this);\r
- };\r
-\r
- function validateThatBindingIsAllowedForVirtualElements(bindingName) {\r
- var validator = ko.virtualElements.allowedBindings[bindingName];\r
- if (!validator)\r
- throw new Error("The binding '" + bindingName + "' cannot be used with virtual elements")\r
- }\r
-\r
- function applyBindingsToDescendantsInternal (viewModel, elementVerified) {\r
- var currentChild, nextInQueue = elementVerified.childNodes[0];\r
- while (currentChild = nextInQueue) {\r
- // Keep a record of the next child *before* applying bindings, in case the binding removes the current child from its position\r
- nextInQueue = ko.virtualElements.nextSibling(currentChild);\r
- applyBindingsToNodeAndDescendantsInternal(viewModel, currentChild, false);\r
- } \r
- }\r
- \r
- function applyBindingsToNodeAndDescendantsInternal (viewModel, nodeVerified, isRootNodeForBindingContext) {\r
- var shouldBindDescendants = true;\r
-\r
- // Perf optimisation: Apply bindings only if...\r
- // (1) It's a root element for this binding context, as we will need to store the binding context on this node\r
- // Note that we can't store binding contexts on non-elements (e.g., text nodes), as IE doesn't allow expando properties for those\r
- // (2) It might have bindings (e.g., it has a data-bind attribute, or it's a marker for a containerless template)\r
- var isElement = (nodeVerified.nodeType == 1);\r
- if (isElement) // Workaround IE <= 8 HTML parsing weirdness\r
- ko.virtualElements.normaliseVirtualElementDomStructure(nodeVerified);\r
-\r
- var shouldApplyBindings = (isElement && isRootNodeForBindingContext) // Case (1)\r
- || ko.bindingProvider['instance']['nodeHasBindings'](nodeVerified); // Case (2)\r
- if (shouldApplyBindings)\r
- shouldBindDescendants = applyBindingsToNodeInternal(nodeVerified, null, viewModel, isRootNodeForBindingContext).shouldBindDescendants;\r
- \r
- if (isElement && shouldBindDescendants)\r
- applyBindingsToDescendantsInternal(viewModel, nodeVerified);\r
- } \r
-\r
- function applyBindingsToNodeInternal (node, bindings, viewModelOrBindingContext, isRootNodeForBindingContext) {\r
- // Need to be sure that inits are only run once, and updates never run until all the inits have been run\r
- var initPhase = 0; // 0 = before all inits, 1 = during inits, 2 = after all inits\r
-\r
- // Pre-process any anonymous template bounded by comment nodes\r
- ko.virtualElements.extractAnonymousTemplateIfVirtualElement(node);\r
-\r
- // Each time the dependentObservable is evaluated (after data changes),\r
- // the binding attribute is reparsed so that it can pick out the correct\r
- // model properties in the context of the changed data.\r
- // DOM event callbacks need to be able to access this changed data,\r
- // so we need a single parsedBindings variable (shared by all callbacks\r
- // associated with this node's bindings) that all the closures can access.\r
- var parsedBindings;\r
- function makeValueAccessor(bindingKey) {\r
- return function () { return parsedBindings[bindingKey] }\r
- }\r
- function parsedBindingsAccessor() {\r
- return parsedBindings;\r
- }\r
- \r
- var bindingHandlerThatControlsDescendantBindings;\r
- new ko.dependentObservable(\r
- function () {\r
- // Ensure we have a nonnull binding context to work with\r
- var bindingContextInstance = viewModelOrBindingContext && (viewModelOrBindingContext instanceof ko.bindingContext)\r
- ? viewModelOrBindingContext\r
- : new ko.bindingContext(ko.utils.unwrapObservable(viewModelOrBindingContext));\r
- var viewModel = bindingContextInstance['$data'];\r
-\r
- // We only need to store the bindingContext at the root of the subtree where it applies\r
- // as all descendants will be able to find it by scanning up their ancestry\r
- if (isRootNodeForBindingContext)\r
- ko.storedBindingContextForNode(node, bindingContextInstance);\r
-\r
- // Use evaluatedBindings if given, otherwise fall back on asking the bindings provider to give us some bindings\r
- var evaluatedBindings = (typeof bindings == "function") ? bindings() : bindings;\r
- parsedBindings = evaluatedBindings || ko.bindingProvider['instance']['getBindings'](node, bindingContextInstance);\r
-\r
- if (parsedBindings) {\r
- // First run all the inits, so bindings can register for notification on changes\r
- if (initPhase === 0) {\r
- initPhase = 1;\r
- for (var bindingKey in parsedBindings) {\r
- var binding = ko.bindingHandlers[bindingKey];\r
- if (binding && node.nodeType === 8)\r
- validateThatBindingIsAllowedForVirtualElements(bindingKey);\r
-\r
- if (binding && typeof binding["init"] == "function") {\r
- var handlerInitFn = binding["init"];\r
- var initResult = handlerInitFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance);\r
- \r
- // If this binding handler claims to control descendant bindings, make a note of this\r
- if (initResult && initResult['controlsDescendantBindings']) {\r
- if (bindingHandlerThatControlsDescendantBindings !== undefined)\r
- 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.");\r
- bindingHandlerThatControlsDescendantBindings = bindingKey;\r
- }\r
- }\r
- }\r
- initPhase = 2;\r
- }\r
- \r
- // ... then run all the updates, which might trigger changes even on the first evaluation\r
- if (initPhase === 2) {\r
- for (var bindingKey in parsedBindings) {\r
- var binding = ko.bindingHandlers[bindingKey];\r
- if (binding && typeof binding["update"] == "function") {\r
- var handlerUpdateFn = binding["update"];\r
- handlerUpdateFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance);\r
- }\r
- }\r
- }\r
- }\r
- },\r
- null,\r
- { 'disposeWhenNodeIsRemoved' : node }\r
- );\r
- \r
- return { \r
- shouldBindDescendants: bindingHandlerThatControlsDescendantBindings === undefined\r
- };\r
- };\r
-\r
- var storedBindingContextDomDataKey = "__ko_bindingContext__";\r
- ko.storedBindingContextForNode = function (node, bindingContext) {\r
- if (arguments.length == 2)\r
- ko.utils.domData.set(node, storedBindingContextDomDataKey, bindingContext);\r
- else\r
- return ko.utils.domData.get(node, storedBindingContextDomDataKey);\r
- }\r
-\r
- ko.applyBindingsToNode = function (node, bindings, viewModel) {\r
- if (node.nodeType === 1) // If it's an element, workaround IE <= 8 HTML parsing weirdness\r
- ko.virtualElements.normaliseVirtualElementDomStructure(node); \r
- return applyBindingsToNodeInternal(node, bindings, viewModel, true);\r
- };\r
-\r
- ko.applyBindingsToDescendants = function(viewModel, rootNode) {\r
- if (rootNode.nodeType === 1)\r
- applyBindingsToDescendantsInternal(viewModel, rootNode);\r
- };\r
-\r
- ko.applyBindings = function (viewModel, rootNode) {\r
- if (rootNode && (rootNode.nodeType !== 1) && (rootNode.nodeType !== 8))\r
- throw new Error("ko.applyBindings: first parameter should be your view model; second parameter should be a DOM node");\r
- rootNode = rootNode || window.document.body; // Make "rootNode" parameter optional\r
-\r
- applyBindingsToNodeAndDescendantsInternal(viewModel, rootNode, true);\r
- };\r
-\r
- // Retrieving binding context from arbitrary nodes\r
- ko.contextFor = function(node) {\r
- // We can only do something meaningful for elements and comment nodes (in particular, not text nodes, as IE can't store domdata for them)\r
- switch (node.nodeType) {\r
- case 1:\r
- case 8:\r
- var context = ko.storedBindingContextForNode(node);\r
- if (context) return context;\r
- if (node.parentNode) return ko.contextFor(node.parentNode);\r
- break;\r
- }\r
- return undefined;\r
- };\r
- ko.dataFor = function(node) {\r
- var context = ko.contextFor(node);\r
- return context ? context['$data'] : undefined;\r
- }; \r
- \r
- ko.exportSymbol('bindingHandlers', ko.bindingHandlers);\r
- ko.exportSymbol('applyBindings', ko.applyBindings);\r
- ko.exportSymbol('applyBindingsToDescendants', ko.applyBindingsToDescendants);\r
- ko.exportSymbol('applyBindingsToNode', ko.applyBindingsToNode);\r
- ko.exportSymbol('contextFor', ko.contextFor);\r
- ko.exportSymbol('dataFor', ko.dataFor);\r
-})();// For certain common events (currently just 'click'), allow a simplified data-binding syntax\r
-// e.g. click:handler instead of the usual full-length event:{click:handler}\r
-var eventHandlersWithShortcuts = ['click'];\r
-ko.utils.arrayForEach(eventHandlersWithShortcuts, function(eventName) {\r
- ko.bindingHandlers[eventName] = {\r
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel) {\r
- var newValueAccessor = function () {\r
- var result = {};\r
- result[eventName] = valueAccessor();\r
- return result;\r
- };\r
- return ko.bindingHandlers['event']['init'].call(this, element, newValueAccessor, allBindingsAccessor, viewModel);\r
- }\r
- } \r
-});\r
-\r
-\r
-ko.bindingHandlers['event'] = {\r
- 'init' : function (element, valueAccessor, allBindingsAccessor, viewModel) {\r
- var eventsToHandle = valueAccessor() || {};\r
- for(var eventNameOutsideClosure in eventsToHandle) {\r
- (function() {\r
- var eventName = eventNameOutsideClosure; // Separate variable to be captured by event handler closure\r
- if (typeof eventName == "string") {\r
- ko.utils.registerEventHandler(element, eventName, function (event) {\r
- var handlerReturnValue;\r
- var handlerFunction = valueAccessor()[eventName];\r
- if (!handlerFunction)\r
- return;\r
- var allBindings = allBindingsAccessor();\r
- \r
- try { \r
- // Take all the event args, and prefix with the viewmodel\r
- var argsForHandler = ko.utils.makeArray(arguments);\r
- argsForHandler.unshift(viewModel);\r
- handlerReturnValue = handlerFunction.apply(viewModel, argsForHandler);\r
- } finally {\r
- if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.\r
- if (event.preventDefault)\r
- event.preventDefault();\r
- else\r
- event.returnValue = false;\r
- }\r
- }\r
- \r
- var bubble = allBindings[eventName + 'Bubble'] !== false;\r
- if (!bubble) {\r
- event.cancelBubble = true;\r
- if (event.stopPropagation)\r
- event.stopPropagation();\r
- }\r
- });\r
- }\r
- })();\r
- }\r
- }\r
-};\r
-\r
-ko.bindingHandlers['submit'] = {\r
- 'init': function (element, valueAccessor, allBindingsAccessor, viewModel) {\r
- if (typeof valueAccessor() != "function")\r
- throw new Error("The value for a submit binding must be a function");\r
- ko.utils.registerEventHandler(element, "submit", function (event) {\r
- var handlerReturnValue;\r
- var value = valueAccessor();\r
- try { handlerReturnValue = value.call(viewModel, element); }\r
- finally {\r
- if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.\r
- if (event.preventDefault)\r
- event.preventDefault();\r
- else\r
- event.returnValue = false;\r
- }\r
- }\r
- });\r
- }\r
-};\r
-\r
-ko.bindingHandlers['visible'] = {\r
- 'update': function (element, valueAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor());\r
- var isCurrentlyVisible = !(element.style.display == "none");\r
- if (value && !isCurrentlyVisible)\r
- element.style.display = "";\r
- else if ((!value) && isCurrentlyVisible)\r
- element.style.display = "none";\r
- }\r
-}\r
-\r
-ko.bindingHandlers['enable'] = {\r
- 'update': function (element, valueAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor());\r
- if (value && element.disabled)\r
- element.removeAttribute("disabled");\r
- else if ((!value) && (!element.disabled))\r
- element.disabled = true;\r
- }\r
-};\r
-\r
-ko.bindingHandlers['disable'] = { \r
- 'update': function (element, valueAccessor) { \r
- ko.bindingHandlers['enable']['update'](element, function() { return !ko.utils.unwrapObservable(valueAccessor()) }); \r
- } \r
-};\r
-\r
-function ensureDropdownSelectionIsConsistentWithModelValue(element, modelValue, preferModelValue) {\r
- if (preferModelValue) {\r
- if (modelValue !== ko.selectExtensions.readValue(element))\r
- ko.selectExtensions.writeValue(element, modelValue);\r
- }\r
-\r
- // No matter which direction we're syncing in, we want the end result to be equality between dropdown value and model value.\r
- // If they aren't equal, either we prefer the dropdown value, or the model value couldn't be represented, so either way,\r
- // change the model value to match the dropdown.\r
- if (modelValue !== ko.selectExtensions.readValue(element))\r
- ko.utils.triggerEvent(element, "change");\r
-};\r
-\r
-ko.bindingHandlers['value'] = {\r
- 'init': function (element, valueAccessor, allBindingsAccessor) { \r
- // Always catch "change" event; possibly other events too if asked\r
- var eventsToCatch = ["change"];\r
- var requestedEventsToCatch = allBindingsAccessor()["valueUpdate"];\r
- if (requestedEventsToCatch) {\r
- if (typeof requestedEventsToCatch == "string") // Allow both individual event names, and arrays of event names\r
- requestedEventsToCatch = [requestedEventsToCatch];\r
- ko.utils.arrayPushAll(eventsToCatch, requestedEventsToCatch);\r
- eventsToCatch = ko.utils.arrayGetDistinctValues(eventsToCatch);\r
- }\r
- \r
- ko.utils.arrayForEach(eventsToCatch, function(eventName) {\r
- // The syntax "after<eventname>" means "run the handler asynchronously after the event"\r
- // This is useful, for example, to catch "keydown" events after the browser has updated the control\r
- // (otherwise, ko.selectExtensions.readValue(this) will receive the control's value *before* the key event)\r
- var handleEventAsynchronously = false;\r
- if (ko.utils.stringStartsWith(eventName, "after")) {\r
- handleEventAsynchronously = true;\r
- eventName = eventName.substring("after".length);\r
- }\r
- var runEventHandler = handleEventAsynchronously ? function(handler) { setTimeout(handler, 0) }\r
- : function(handler) { handler() };\r
- \r
- ko.utils.registerEventHandler(element, eventName, function () {\r
- runEventHandler(function() {\r
- var modelValue = valueAccessor();\r
- var elementValue = ko.selectExtensions.readValue(element);\r
- if (ko.isWriteableObservable(modelValue))\r
- modelValue(elementValue);\r
- else {\r
- var allBindings = allBindingsAccessor();\r
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['value'])\r
- allBindings['_ko_property_writers']['value'](elementValue); \r
- }\r
- });\r
- }); \r
- });\r
- },\r
- 'update': function (element, valueAccessor) {\r
- var newValue = ko.utils.unwrapObservable(valueAccessor());\r
- var elementValue = ko.selectExtensions.readValue(element);\r
- var valueHasChanged = (newValue != elementValue);\r
- \r
- // 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). \r
- // 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.\r
- if ((newValue === 0) && (elementValue !== 0) && (elementValue !== "0"))\r
- valueHasChanged = true;\r
- \r
- if (valueHasChanged) {\r
- var applyValueAction = function () { ko.selectExtensions.writeValue(element, newValue); };\r
- applyValueAction();\r
-\r
- // Workaround for IE6 bug: It won't reliably apply values to SELECT nodes during the same execution thread\r
- // right after you've changed the set of OPTION nodes on it. So for that node type, we'll schedule a second thread\r
- // to apply the value as well.\r
- var alsoApplyAsynchronously = element.tagName == "SELECT";\r
- if (alsoApplyAsynchronously)\r
- setTimeout(applyValueAction, 0);\r
- }\r
- \r
- // If you try to set a model value that can't be represented in an already-populated dropdown, reject that change,\r
- // because you're not allowed to have a model value that disagrees with a visible UI selection.\r
- if ((element.tagName == "SELECT") && (element.length > 0))\r
- ensureDropdownSelectionIsConsistentWithModelValue(element, newValue, /* preferModelValue */ false);\r
- }\r
-};\r
-\r
-ko.bindingHandlers['options'] = {\r
- 'update': function (element, valueAccessor, allBindingsAccessor) {\r
- if (element.tagName != "SELECT")\r
- throw new Error("options binding applies only to SELECT elements");\r
-\r
- var selectWasPreviouslyEmpty = element.length == 0;\r
- var previousSelectedValues = ko.utils.arrayMap(ko.utils.arrayFilter(element.childNodes, function (node) {\r
- return node.tagName && node.tagName == "OPTION" && node.selected;\r
- }), function (node) {\r
- return ko.selectExtensions.readValue(node) || node.innerText || node.textContent;\r
- });\r
- var previousScrollTop = element.scrollTop;\r
- element.scrollTop = 0; // Workaround for a Chrome rendering bug. Note that we restore the scroll position later. (https://github.com/SteveSanderson/knockout/issues/215)\r
-\r
- var value = ko.utils.unwrapObservable(valueAccessor());\r
- var selectedValue = element.value;\r
-\r
- // Remove all existing <option>s. \r
- // Need to use .remove() rather than .removeChild() for <option>s otherwise IE behaves oddly (https://github.com/SteveSanderson/knockout/issues/134)\r
- while (element.length > 0) {\r
- ko.cleanNode(element.options[0]);\r
- element.remove(0);\r
- }\r
-\r
- if (value) {\r
- var allBindings = allBindingsAccessor();\r
- if (typeof value.length != "number")\r
- value = [value];\r
- if (allBindings['optionsCaption']) {\r
- var option = document.createElement("OPTION");\r
- ko.utils.setHtml(option, allBindings['optionsCaption']);\r
- ko.selectExtensions.writeValue(option, undefined);\r
- element.appendChild(option);\r
- }\r
- for (var i = 0, j = value.length; i < j; i++) {\r
- var option = document.createElement("OPTION");\r
- \r
- // Apply a value to the option element\r
- var optionValue = typeof allBindings['optionsValue'] == "string" ? value[i][allBindings['optionsValue']] : value[i];\r
- optionValue = ko.utils.unwrapObservable(optionValue);\r
- ko.selectExtensions.writeValue(option, optionValue);\r
- \r
- // Apply some text to the option element\r
- var optionsTextValue = allBindings['optionsText'];\r
- var optionText;\r
- if (typeof optionsTextValue == "function")\r
- optionText = optionsTextValue(value[i]); // Given a function; run it against the data value\r
- else if (typeof optionsTextValue == "string")\r
- optionText = value[i][optionsTextValue]; // Given a string; treat it as a property name on the data value\r
- else\r
- optionText = optionValue; // Given no optionsText arg; use the data value itself\r
- if ((optionText === null) || (optionText === undefined))\r
- optionText = ""; \r
-\r
- ko.utils.setTextContent(option, optionText);\r
-\r
- element.appendChild(option);\r
- }\r
-\r
- // IE6 doesn't like us to assign selection to OPTION nodes before they're added to the document.\r
- // That's why we first added them without selection. Now it's time to set the selection.\r
- var newOptions = element.getElementsByTagName("OPTION");\r
- var countSelectionsRetained = 0;\r
- for (var i = 0, j = newOptions.length; i < j; i++) {\r
- if (ko.utils.arrayIndexOf(previousSelectedValues, ko.selectExtensions.readValue(newOptions[i])) >= 0) {\r
- ko.utils.setOptionNodeSelectionState(newOptions[i], true);\r
- countSelectionsRetained++;\r
- }\r
- }\r
- \r
- if (previousScrollTop)\r
- element.scrollTop = previousScrollTop;\r
-\r
- if (selectWasPreviouslyEmpty && ('value' in allBindings)) {\r
- // Ensure consistency between model value and selected option.\r
- // If the dropdown is being populated for the first time here (or was otherwise previously empty),\r
- // the dropdown selection state is meaningless, so we preserve the model value.\r
- ensureDropdownSelectionIsConsistentWithModelValue(element, ko.utils.unwrapObservable(allBindings['value']), /* preferModelValue */ true);\r
- }\r
- }\r
- }\r
-};\r
-ko.bindingHandlers['options'].optionValueDomDataKey = '__ko.optionValueDomData__';\r
-\r
-ko.bindingHandlers['selectedOptions'] = {\r
- getSelectedValuesFromSelectNode: function (selectNode) {\r
- var result = [];\r
- var nodes = selectNode.childNodes;\r
- for (var i = 0, j = nodes.length; i < j; i++) {\r
- var node = nodes[i];\r
- if ((node.tagName == "OPTION") && node.selected)\r
- result.push(ko.selectExtensions.readValue(node));\r
- }\r
- return result;\r
- },\r
- 'init': function (element, valueAccessor, allBindingsAccessor) {\r
- ko.utils.registerEventHandler(element, "change", function () { \r
- var value = valueAccessor();\r
- if (ko.isWriteableObservable(value))\r
- value(ko.bindingHandlers['selectedOptions'].getSelectedValuesFromSelectNode(this));\r
- else {\r
- var allBindings = allBindingsAccessor();\r
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['value'])\r
- allBindings['_ko_property_writers']['value'](ko.bindingHandlers['selectedOptions'].getSelectedValuesFromSelectNode(this));\r
- }\r
- }); \r
- },\r
- 'update': function (element, valueAccessor) {\r
- if (element.tagName != "SELECT")\r
- throw new Error("values binding applies only to SELECT elements");\r
-\r
- var newValue = ko.utils.unwrapObservable(valueAccessor());\r
- if (newValue && typeof newValue.length == "number") {\r
- var nodes = element.childNodes;\r
- for (var i = 0, j = nodes.length; i < j; i++) {\r
- var node = nodes[i];\r
- if (node.tagName == "OPTION")\r
- ko.utils.setOptionNodeSelectionState(node, ko.utils.arrayIndexOf(newValue, ko.selectExtensions.readValue(node)) >= 0);\r
- }\r
- }\r
- }\r
-};\r
-\r
-ko.bindingHandlers['text'] = {\r
- 'update': function (element, valueAccessor) {\r
- ko.utils.setTextContent(element, valueAccessor());\r
- }\r
-};\r
-\r
-ko.bindingHandlers['html'] = {\r
- 'init': function() {\r
- // Prevent binding on the dynamically-injected HTML (as developers are unlikely to expect that, and it has security implications)\r
- return { 'controlsDescendantBindings': true };\r
- },\r
- 'update': function (element, valueAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor());\r
- ko.utils.setHtml(element, value);\r
- }\r
-};\r
-\r
-ko.bindingHandlers['css'] = {\r
- 'update': function (element, valueAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor() || {});\r
- for (var className in value) {\r
- if (typeof className == "string") {\r
- var shouldHaveClass = ko.utils.unwrapObservable(value[className]);\r
- ko.utils.toggleDomNodeCssClass(element, className, shouldHaveClass);\r
- }\r
- }\r
- }\r
-};\r
-\r
-ko.bindingHandlers['style'] = {\r
- 'update': function (element, valueAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor() || {});\r
- for (var styleName in value) {\r
- if (typeof styleName == "string") {\r
- var styleValue = ko.utils.unwrapObservable(value[styleName]);\r
- element.style[styleName] = styleValue || ""; // Empty string removes the value, whereas null/undefined have no effect\r
- }\r
- }\r
- }\r
-};\r
-\r
-ko.bindingHandlers['uniqueName'] = {\r
- 'init': function (element, valueAccessor) {\r
- if (valueAccessor()) {\r
- element.name = "ko_unique_" + (++ko.bindingHandlers['uniqueName'].currentIndex);\r
-\r
- // Workaround IE 6/7 issue\r
- // - https://github.com/SteveSanderson/knockout/issues/197\r
- // - http://www.matts411.com/post/setting_the_name_attribute_in_ie_dom/\r
- if (ko.utils.isIe6 || ko.utils.isIe7)\r
- element.mergeAttributes(document.createElement("<input name='" + element.name + "'/>"), false);\r
- }\r
- }\r
-};\r
-ko.bindingHandlers['uniqueName'].currentIndex = 0;\r
-\r
-ko.bindingHandlers['checked'] = {\r
- 'init': function (element, valueAccessor, allBindingsAccessor) {\r
- var updateHandler = function() { \r
- var valueToWrite;\r
- if (element.type == "checkbox") {\r
- valueToWrite = element.checked;\r
- } else if ((element.type == "radio") && (element.checked)) {\r
- valueToWrite = element.value;\r
- } else {\r
- return; // "checked" binding only responds to checkboxes and selected radio buttons\r
- }\r
- \r
- var modelValue = valueAccessor(); \r
- if ((element.type == "checkbox") && (ko.utils.unwrapObservable(modelValue) instanceof Array)) {\r
- // For checkboxes bound to an array, we add/remove the checkbox value to that array\r
- // This works for both observable and non-observable arrays\r
- var existingEntryIndex = ko.utils.arrayIndexOf(ko.utils.unwrapObservable(modelValue), element.value);\r
- if (element.checked && (existingEntryIndex < 0))\r
- modelValue.push(element.value);\r
- else if ((!element.checked) && (existingEntryIndex >= 0))\r
- modelValue.splice(existingEntryIndex, 1);\r
- } else if (ko.isWriteableObservable(modelValue)) { \r
- if (modelValue() !== valueToWrite) { // Suppress repeated events when there's nothing new to notify (some browsers raise them)\r
- modelValue(valueToWrite);\r
- }\r
- } else {\r
- var allBindings = allBindingsAccessor();\r
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['checked']) {\r
- allBindings['_ko_property_writers']['checked'](valueToWrite);\r
- }\r
- }\r
- };\r
- ko.utils.registerEventHandler(element, "click", updateHandler);\r
-\r
- // IE 6 won't allow radio buttons to be selected unless they have a name\r
- if ((element.type == "radio") && !element.name)\r
- ko.bindingHandlers['uniqueName']['init'](element, function() { return true });\r
- },\r
- 'update': function (element, valueAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor());\r
- \r
- if (element.type == "checkbox") { \r
- if (value instanceof Array) {\r
- // When bound to an array, the checkbox being checked represents its value being present in that array\r
- element.checked = ko.utils.arrayIndexOf(value, element.value) >= 0;\r
- } else {\r
- // When bound to anything other value (not an array), the checkbox being checked represents the value being trueish\r
- element.checked = value; \r
- } \r
- } else if (element.type == "radio") {\r
- element.checked = (element.value == value);\r
- }\r
- }\r
-};\r
-\r
-ko.bindingHandlers['attr'] = {\r
- 'update': function(element, valueAccessor, allBindingsAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor()) || {};\r
- for (var attrName in value) {\r
- if (typeof attrName == "string") {\r
- var attrValue = ko.utils.unwrapObservable(value[attrName]);\r
- \r
- // To cover cases like "attr: { checked:someProp }", we want to remove the attribute entirely \r
- // when someProp is a "no value"-like value (strictly null, false, or undefined)\r
- // (because the absence of the "checked" attr is how to mark an element as not checked, etc.) \r
- if ((attrValue === false) || (attrValue === null) || (attrValue === undefined))\r
- element.removeAttribute(attrName);\r
- else \r
- element.setAttribute(attrName, attrValue.toString());\r
- }\r
- }\r
- }\r
-};\r
-\r
-ko.bindingHandlers['hasfocus'] = {\r
- 'init': function(element, valueAccessor, allBindingsAccessor) {\r
- var writeValue = function(valueToWrite) {\r
- var modelValue = valueAccessor();\r
- if (valueToWrite == ko.utils.unwrapObservable(modelValue))\r
- return;\r
-\r
- if (ko.isWriteableObservable(modelValue))\r
- modelValue(valueToWrite);\r
- else {\r
- var allBindings = allBindingsAccessor();\r
- if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['hasfocus']) {\r
- allBindings['_ko_property_writers']['hasfocus'](valueToWrite);\r
- } \r
- }\r
- };\r
- ko.utils.registerEventHandler(element, "focus", function() { writeValue(true) });\r
- ko.utils.registerEventHandler(element, "focusin", function() { writeValue(true) }); // For IE\r
- ko.utils.registerEventHandler(element, "blur", function() { writeValue(false) });\r
- ko.utils.registerEventHandler(element, "focusout", function() { writeValue(false) }); // For IE\r
- },\r
- 'update': function(element, valueAccessor) {\r
- var value = ko.utils.unwrapObservable(valueAccessor());\r
- value ? element.focus() : element.blur();\r
- ko.utils.triggerEvent(element, value ? "focusin" : "focusout"); // For IE, which doesn't reliably fire "focus" or "blur" events synchronously\r
- }\r
-};\r
-\r
-// "with: someExpression" is equivalent to "template: { if: someExpression, data: someExpression }"\r
-ko.bindingHandlers['with'] = {\r
- makeTemplateValueAccessor: function(valueAccessor) {\r
- return function() { var value = valueAccessor(); return { 'if': value, 'data': value, 'templateEngine': ko.nativeTemplateEngine.instance } };\r
- },\r
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['with'].makeTemplateValueAccessor(valueAccessor));\r
- },\r
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['with'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);\r
- }\r
-};\r
-ko.jsonExpressionRewriting.bindingRewriteValidators['with'] = false; // Can't rewrite control flow bindings\r
-ko.virtualElements.allowedBindings['with'] = true;\r
-\r
-// "if: someExpression" is equivalent to "template: { if: someExpression }"\r
-ko.bindingHandlers['if'] = {\r
- makeTemplateValueAccessor: function(valueAccessor) {\r
- return function() { return { 'if': valueAccessor(), 'templateEngine': ko.nativeTemplateEngine.instance } };\r
- }, \r
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['if'].makeTemplateValueAccessor(valueAccessor));\r
- },\r
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['if'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);\r
- }\r
-};\r
-ko.jsonExpressionRewriting.bindingRewriteValidators['if'] = false; // Can't rewrite control flow bindings\r
-ko.virtualElements.allowedBindings['if'] = true;\r
-\r
-// "ifnot: someExpression" is equivalent to "template: { ifnot: someExpression }"\r
-ko.bindingHandlers['ifnot'] = {\r
- makeTemplateValueAccessor: function(valueAccessor) {\r
- return function() { return { 'ifnot': valueAccessor(), 'templateEngine': ko.nativeTemplateEngine.instance } };\r
- }, \r
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['ifnot'].makeTemplateValueAccessor(valueAccessor));\r
- },\r
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['ifnot'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);\r
- }\r
-};\r
-ko.jsonExpressionRewriting.bindingRewriteValidators['ifnot'] = false; // Can't rewrite control flow bindings\r
-ko.virtualElements.allowedBindings['ifnot'] = true;\r
-\r
-// "foreach: someExpression" is equivalent to "template: { foreach: someExpression }"\r
-// "foreach: { data: someExpression, afterAdd: myfn }" is equivalent to "template: { foreach: someExpression, afterAdd: myfn }"\r
-ko.bindingHandlers['foreach'] = {\r
- makeTemplateValueAccessor: function(valueAccessor) {\r
- return function() { \r
- var bindingValue = ko.utils.unwrapObservable(valueAccessor());\r
- \r
- // If bindingValue is the array, just pass it on its own\r
- if ((!bindingValue) || typeof bindingValue.length == "number")\r
- return { 'foreach': bindingValue, 'templateEngine': ko.nativeTemplateEngine.instance };\r
- \r
- // If bindingValue.data is the array, preserve all relevant options\r
- return { \r
- 'foreach': bindingValue['data'], \r
- 'includeDestroyed': bindingValue['includeDestroyed'],\r
- 'afterAdd': bindingValue['afterAdd'],\r
- 'beforeRemove': bindingValue['beforeRemove'], \r
- 'afterRender': bindingValue['afterRender'],\r
- 'templateEngine': ko.nativeTemplateEngine.instance\r
- };\r
- };\r
- },\r
- 'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) { \r
- return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor));\r
- },\r
- 'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);\r
- }\r
-};\r
-ko.jsonExpressionRewriting.bindingRewriteValidators['foreach'] = false; // Can't rewrite control flow bindings\r
-ko.virtualElements.allowedBindings['foreach'] = true;\r
-ko.exportSymbol('allowedVirtualElementBindings', ko.virtualElements.allowedBindings);\r
-// If you want to make a custom template engine,\r
-// \r
-// [1] Inherit from this class (like ko.nativeTemplateEngine does)\r
-// [2] Override 'renderTemplateSource', supplying a function with this signature:\r
-//\r
-// function (templateSource, bindingContext, options) {\r
-// // - templateSource.text() is the text of the template you should render\r
-// // - bindingContext.$data is the data you should pass into the template\r
-// // - you might also want to make bindingContext.$parent, bindingContext.$parents, \r
-// // and bindingContext.$root available in the template too\r
-// // - options gives you access to any other properties set on "data-bind: { template: options }"\r
-// //\r
-// // Return value: an array of DOM nodes\r
-// }\r
-//\r
-// [3] Override 'createJavaScriptEvaluatorBlock', supplying a function with this signature:\r
-//\r
-// function (script) {\r
-// // Return value: Whatever syntax means "Evaluate the JavaScript statement 'script' and output the result"\r
-// // For example, the jquery.tmpl template engine converts 'someScript' to '${ someScript }' \r
-// }\r
-//\r
-// This is only necessary if you want to allow data-bind attributes to reference arbitrary template variables.\r
-// If you don't want to allow that, you can set the property 'allowTemplateRewriting' to false (like ko.nativeTemplateEngine does)\r
-// and then you don't need to override 'createJavaScriptEvaluatorBlock'.\r
-\r
-ko.templateEngine = function () { };\r
-\r
-ko.templateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options) {\r
- throw "Override renderTemplateSource";\r
-};\r
-\r
-ko.templateEngine.prototype['createJavaScriptEvaluatorBlock'] = function (script) {\r
- throw "Override createJavaScriptEvaluatorBlock";\r
-};\r
-\r
-ko.templateEngine.prototype['makeTemplateSource'] = function(template) {\r
- // Named template\r
- if (typeof template == "string") {\r
- var elem = document.getElementById(template);\r
- if (!elem)\r
- throw new Error("Cannot find template with ID " + template);\r
- return new ko.templateSources.domElement(elem);\r
- } else if ((template.nodeType == 1) || (template.nodeType == 8)) {\r
- // Anonymous template\r
- return new ko.templateSources.anonymousTemplate(template);\r
- } else\r
- throw new Error("Unknown template type: " + template);\r
-};\r
-\r
-ko.templateEngine.prototype['renderTemplate'] = function (template, bindingContext, options) {\r
- var templateSource = this['makeTemplateSource'](template);\r
- return this['renderTemplateSource'](templateSource, bindingContext, options);\r
-};\r
-\r
-ko.templateEngine.prototype['isTemplateRewritten'] = function (template) {\r
- // Skip rewriting if requested\r
- if (this['allowTemplateRewriting'] === false)\r
- return true;\r
- \r
- // Perf optimisation - see below\r
- if (this.knownRewrittenTemplates && this.knownRewrittenTemplates[template])\r
- return true;\r
- \r
- return this['makeTemplateSource'](template)['data']("isRewritten");\r
-};\r
-\r
-ko.templateEngine.prototype['rewriteTemplate'] = function (template, rewriterCallback) {\r
- var templateSource = this['makeTemplateSource'](template); \r
- var rewritten = rewriterCallback(templateSource['text']());\r
- templateSource['text'](rewritten);\r
- templateSource['data']("isRewritten", true);\r
- \r
- // Perf optimisation - for named templates, track which ones have been rewritten so we can\r
- // answer 'isTemplateRewritten' *without* having to use getElementById (which is slow on IE < 8)\r
- if (typeof template == "string") {\r
- this.knownRewrittenTemplates = this.knownRewrittenTemplates || {};\r
- this.knownRewrittenTemplates[template] = true; \r
- }\r
-};\r
-\r
-ko.exportSymbol('templateEngine', ko.templateEngine);\r
-\r
-ko.templateRewriting = (function () {\r
- var memoizeDataBindingAttributeSyntaxRegex = /(<[a-z]+\d*(\s+(?!data-bind=)[a-z0-9\-]+(=(\"[^\"]*\"|\'[^\']*\'))?)*\s+)data-bind=(["'])([\s\S]*?)\5/gi;\r
- var memoizeVirtualContainerBindingSyntaxRegex = /<!--\s*ko\b\s*([\s\S]*?)\s*-->/g;\r
-\r
- function validateDataBindValuesForRewriting(keyValueArray) {\r
- var allValidators = ko.jsonExpressionRewriting.bindingRewriteValidators;\r
- for (var i = 0; i < keyValueArray.length; i++) {\r
- var key = keyValueArray[i]['key'];\r
- if (allValidators.hasOwnProperty(key)) {\r
- var validator = allValidators[key]; \r
-\r
- if (typeof validator === "function") {\r
- var possibleErrorMessage = validator(keyValueArray[i]['value']);\r
- if (possibleErrorMessage)\r
- throw new Error(possibleErrorMessage);\r
- } else if (!validator) {\r
- throw new Error("This template engine does not support the '" + key + "' binding within its templates");\r
- } \r
- }\r
- }\r
- }\r
-\r
- function constructMemoizedTagReplacement(dataBindAttributeValue, tagToRetain, templateEngine) {\r
- var dataBindKeyValueArray = ko.jsonExpressionRewriting.parseObjectLiteral(dataBindAttributeValue);\r
- validateDataBindValuesForRewriting(dataBindKeyValueArray);\r
- var rewrittenDataBindAttributeValue = ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson(dataBindKeyValueArray);\r
-\r
- // For no obvious reason, Opera fails to evaluate rewrittenDataBindAttributeValue unless it's wrapped in an additional \r
- // anonymous function, even though Opera's built-in debugger can evaluate it anyway. No other browser requires this \r
- // extra indirection.\r
- var applyBindingsToNextSiblingScript = "ko.templateRewriting.applyMemoizedBindingsToNextSibling(function() { \\r
- return (function() { return { " + rewrittenDataBindAttributeValue + " } })() \\r
- })";\r
- return templateEngine['createJavaScriptEvaluatorBlock'](applyBindingsToNextSiblingScript) + tagToRetain; \r
- }\r
-\r
- return {\r
- ensureTemplateIsRewritten: function (template, templateEngine) {\r
- if (!templateEngine['isTemplateRewritten'](template))\r
- templateEngine['rewriteTemplate'](template, function (htmlString) {\r
- return ko.templateRewriting.memoizeBindingAttributeSyntax(htmlString, templateEngine);\r
- });\r
- },\r
-\r
- memoizeBindingAttributeSyntax: function (htmlString, templateEngine) {\r
- return htmlString.replace(memoizeDataBindingAttributeSyntaxRegex, function () {\r
- return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[6], /* tagToRetain: */ arguments[1], templateEngine);\r
- }).replace(memoizeVirtualContainerBindingSyntaxRegex, function() {\r
- return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[1], /* tagToRetain: */ "<!-- ko -->", templateEngine); \r
- });\r
- },\r
-\r
- applyMemoizedBindingsToNextSibling: function (bindings) {\r
- return ko.memoization.memoize(function (domNode, bindingContext) {\r
- if (domNode.nextSibling)\r
- ko.applyBindingsToNode(domNode.nextSibling, bindings, bindingContext);\r
- });\r
- }\r
- }\r
-})();\r
-\r
-ko.exportSymbol('templateRewriting', ko.templateRewriting);\r
-ko.exportSymbol('templateRewriting.applyMemoizedBindingsToNextSibling', ko.templateRewriting.applyMemoizedBindingsToNextSibling); // Exported only because it has to be referenced by string lookup from within rewritten template\r
-(function() { \r
- // A template source represents a read/write way of accessing a template. This is to eliminate the need for template loading/saving\r
- // logic to be duplicated in every template engine (and means they can all work with anonymous templates, etc.)\r
- //\r
- // Two are provided by default:\r
- // 1. ko.templateSources.domElement - reads/writes the text content of an arbitrary DOM element\r
- // 2. ko.templateSources.anonymousElement - uses ko.utils.domData to read/write text *associated* with the DOM element, but \r
- // without reading/writing the actual element text content, since it will be overwritten\r
- // with the rendered template output.\r
- // You can implement your own template source if you want to fetch/store templates somewhere other than in DOM elements.\r
- // Template sources need to have the following functions:\r
- // text() - returns the template text from your storage location\r
- // text(value) - writes the supplied template text to your storage location\r
- // data(key) - reads values stored using data(key, value) - see below\r
- // data(key, value) - associates "value" with this template and the key "key". Is used to store information like "isRewritten".\r
- //\r
- // Once you've implemented a templateSource, make your template engine use it by subclassing whatever template engine you were\r
- // using and overriding "makeTemplateSource" to return an instance of your custom template source.\r
- \r
- ko.templateSources = {};\r
- \r
- // ---- ko.templateSources.domElement -----\r
- \r
- ko.templateSources.domElement = function(element) {\r
- this.domElement = element;\r
- }\r
- \r
- ko.templateSources.domElement.prototype['text'] = function(/* valueToWrite */) {\r
- if (arguments.length == 0) {\r
- return this.domElement.tagName.toLowerCase() == "script" ? this.domElement.text : this.domElement.innerHTML;\r
- } else {\r
- var valueToWrite = arguments[0];\r
- if (this.domElement.tagName.toLowerCase() == "script")\r
- this.domElement.text = valueToWrite;\r
- else\r
- ko.utils.setHtml(this.domElement, valueToWrite);\r
- }\r
- };\r
- \r
- ko.templateSources.domElement.prototype['data'] = function(key /*, valueToWrite */) {\r
- if (arguments.length === 1) {\r
- return ko.utils.domData.get(this.domElement, "templateSourceData_" + key);\r
- } else {\r
- ko.utils.domData.set(this.domElement, "templateSourceData_" + key, arguments[1]);\r
- }\r
- };\r
- \r
- // ---- ko.templateSources.anonymousTemplate -----\r
- \r
- var anonymousTemplatesDomDataKey = "__ko_anon_template__";\r
- ko.templateSources.anonymousTemplate = function(element) { \r
- this.domElement = element;\r
- }\r
- ko.templateSources.anonymousTemplate.prototype = new ko.templateSources.domElement();\r
- ko.templateSources.anonymousTemplate.prototype['text'] = function(/* valueToWrite */) {\r
- if (arguments.length == 0) {\r
- return ko.utils.domData.get(this.domElement, anonymousTemplatesDomDataKey);\r
- } else {\r
- var valueToWrite = arguments[0];\r
- ko.utils.domData.set(this.domElement, anonymousTemplatesDomDataKey, valueToWrite);\r
- }\r
- };\r
- \r
- ko.exportSymbol('templateSources', ko.templateSources);\r
- ko.exportSymbol('templateSources.domElement', ko.templateSources.domElement);\r
- ko.exportSymbol('templateSources.anonymousTemplate', ko.templateSources.anonymousTemplate);\r
-})();\r
-(function () {\r
- var _templateEngine;\r
- ko.setTemplateEngine = function (templateEngine) {\r
- if ((templateEngine != undefined) && !(templateEngine instanceof ko.templateEngine))\r
- throw "templateEngine must inherit from ko.templateEngine";\r
- _templateEngine = templateEngine;\r
- }\r
-\r
- function invokeForEachNodeOrCommentInParent(nodeArray, parent, action) {\r
- for (var i = 0; node = nodeArray[i]; i++) {\r
- if (node.parentNode !== parent) // Skip anything that has been removed during binding\r
- continue;\r
- if ((node.nodeType === 1) || (node.nodeType === 8))\r
- action(node);\r
- } \r
- }\r
-\r
- ko.activateBindingsOnTemplateRenderedNodes = function(nodeArray, bindingContext) {\r
- // To be used on any nodes that have been rendered by a template and have been inserted into some parent element. \r
- // Safely iterates through nodeArray (being tolerant of any changes made to it during binding, e.g., \r
- // if a binding inserts siblings), and for each:\r
- // (1) Does a regular "applyBindings" to associate bindingContext with this node and to activate any non-memoized bindings\r
- // (2) Unmemoizes any memos in the DOM subtree (e.g., to activate bindings that had been memoized during template rewriting)\r
-\r
- var nodeArrayClone = ko.utils.arrayPushAll([], nodeArray); // So we can tolerate insertions/deletions during binding\r
- var commonParentElement = (nodeArray.length > 0) ? nodeArray[0].parentNode : null; // All items must be in the same parent, so this is OK\r
- \r
- // Need to applyBindings *before* unmemoziation, because unmemoization might introduce extra nodes (that we don't want to re-bind)\r
- // whereas a regular applyBindings won't introduce new memoized nodes\r
- \r
- invokeForEachNodeOrCommentInParent(nodeArrayClone, commonParentElement, function(node) {\r
- ko.applyBindings(bindingContext, node);\r
- });\r
- invokeForEachNodeOrCommentInParent(nodeArrayClone, commonParentElement, function(node) {\r
- ko.memoization.unmemoizeDomNodeAndDescendants(node, [bindingContext]); \r
- }); \r
- }\r
-\r
- function getFirstNodeFromPossibleArray(nodeOrNodeArray) {\r
- return nodeOrNodeArray.nodeType ? nodeOrNodeArray\r
- : nodeOrNodeArray.length > 0 ? nodeOrNodeArray[0]\r
- : null;\r
- }\r
-\r
- function executeTemplate(targetNodeOrNodeArray, renderMode, template, bindingContext, options) {\r
-\r
- options = options || {};\r
- var templateEngineToUse = (options['templateEngine'] || _templateEngine);\r
- ko.templateRewriting.ensureTemplateIsRewritten(template, templateEngineToUse);\r
- var renderedNodesArray = templateEngineToUse['renderTemplate'](template, bindingContext, options);\r
-\r
- // Loosely check result is an array of DOM nodes\r
- if ((typeof renderedNodesArray.length != "number") || (renderedNodesArray.length > 0 && typeof renderedNodesArray[0].nodeType != "number"))\r
- throw "Template engine must return an array of DOM nodes";\r
-\r
- var haveAddedNodesToParent = false;\r
- switch (renderMode) {\r
- case "replaceChildren": \r
- ko.virtualElements.setDomNodeChildren(targetNodeOrNodeArray, renderedNodesArray); \r
- haveAddedNodesToParent = true;\r
- break;\r
- case "replaceNode": \r
- ko.utils.replaceDomNodes(targetNodeOrNodeArray, renderedNodesArray); \r
- haveAddedNodesToParent = true;\r
- break;\r
- case "ignoreTargetNode": break;\r
- default: \r
- throw new Error("Unknown renderMode: " + renderMode);\r
- }\r
-\r
- if (haveAddedNodesToParent) {\r
- ko.activateBindingsOnTemplateRenderedNodes(renderedNodesArray, bindingContext);\r
- if (options['afterRender'])\r
- options['afterRender'](renderedNodesArray, bindingContext['$data']); \r
- }\r
-\r
- return renderedNodesArray;\r
- }\r
-\r
- ko.renderTemplate = function (template, dataOrBindingContext, options, targetNodeOrNodeArray, renderMode) {\r
- options = options || {};\r
- if ((options['templateEngine'] || _templateEngine) == undefined)\r
- throw "Set a template engine before calling renderTemplate";\r
- renderMode = renderMode || "replaceChildren";\r
-\r
- if (targetNodeOrNodeArray) {\r
- var firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);\r
- \r
- var whenToDispose = function () { return (!firstTargetNode) || !ko.utils.domNodeIsAttachedToDocument(firstTargetNode); }; // Passive disposal (on next evaluation)\r
- var activelyDisposeWhenNodeIsRemoved = (firstTargetNode && renderMode == "replaceNode") ? firstTargetNode.parentNode : firstTargetNode;\r
- \r
- return new ko.dependentObservable( // So the DOM is automatically updated when any dependency changes \r
- function () {\r
- // Ensure we've got a proper binding context to work with\r
- var bindingContext = (dataOrBindingContext && (dataOrBindingContext instanceof ko.bindingContext))\r
- ? dataOrBindingContext\r
- : new ko.bindingContext(ko.utils.unwrapObservable(dataOrBindingContext));\r
-\r
- // Support selecting template as a function of the data being rendered\r
- var templateName = typeof(template) == 'function' ? template(bindingContext['$data']) : template; \r
- var renderedNodesArray = executeTemplate(targetNodeOrNodeArray, renderMode, templateName, bindingContext, options);\r
- if (renderMode == "replaceNode") {\r
- targetNodeOrNodeArray = renderedNodesArray;\r
- firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);\r
- }\r
- },\r
- null,\r
- { 'disposeWhen': whenToDispose, 'disposeWhenNodeIsRemoved': activelyDisposeWhenNodeIsRemoved }\r
- );\r
- } else {\r
- // 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\r
- return ko.memoization.memoize(function (domNode) {\r
- ko.renderTemplate(template, dataOrBindingContext, options, domNode, "replaceNode");\r
- });\r
- }\r
- };\r
-\r
- ko.renderTemplateForEach = function (template, arrayOrObservableArray, options, targetNode, parentBindingContext) { \r
- var createInnerBindingContext = function(arrayValue) {\r
- return parentBindingContext['createChildContext'](ko.utils.unwrapObservable(arrayValue));\r
- };\r
-\r
- // This will be called whenever setDomNodeChildrenFromArrayMapping has added nodes to targetNode\r
- var activateBindingsCallback = function(arrayValue, addedNodesArray) {\r
- var bindingContext = createInnerBindingContext(arrayValue);\r
- ko.activateBindingsOnTemplateRenderedNodes(addedNodesArray, bindingContext);\r
- if (options['afterRender'])\r
- options['afterRender'](addedNodesArray, bindingContext['$data']); \r
- };\r
- \r
- return new ko.dependentObservable(function () {\r
- var unwrappedArray = ko.utils.unwrapObservable(arrayOrObservableArray) || [];\r
- if (typeof unwrappedArray.length == "undefined") // Coerce single value into array\r
- unwrappedArray = [unwrappedArray];\r
-\r
- // Filter out any entries marked as destroyed\r
- var filteredArray = ko.utils.arrayFilter(unwrappedArray, function(item) {\r
- return options['includeDestroyed'] || item === undefined || item === null || !ko.utils.unwrapObservable(item['_destroy']);\r
- });\r
-\r
- ko.utils.setDomNodeChildrenFromArrayMapping(targetNode, filteredArray, function (arrayValue) {\r
- // Support selecting template as a function of the data being rendered\r
- var templateName = typeof(template) == 'function' ? template(arrayValue) : template;\r
- return executeTemplate(null, "ignoreTargetNode", templateName, createInnerBindingContext(arrayValue), options);\r
- }, options, activateBindingsCallback);\r
- \r
- }, null, { 'disposeWhenNodeIsRemoved': targetNode });\r
- };\r
-\r
- var templateSubscriptionDomDataKey = '__ko__templateSubscriptionDomDataKey__';\r
- function disposeOldSubscriptionAndStoreNewOne(element, newSubscription) {\r
- var oldSubscription = ko.utils.domData.get(element, templateSubscriptionDomDataKey);\r
- if (oldSubscription && (typeof(oldSubscription.dispose) == 'function'))\r
- oldSubscription.dispose();\r
- ko.utils.domData.set(element, templateSubscriptionDomDataKey, newSubscription);\r
- }\r
- \r
- ko.bindingHandlers['template'] = {\r
- 'init': function(element, valueAccessor) {\r
- // Support anonymous templates\r
- var bindingValue = ko.utils.unwrapObservable(valueAccessor());\r
- if ((typeof bindingValue != "string") && (!bindingValue.name) && (element.nodeType == 1)) {\r
- // It's an anonymous template - store the element contents, then clear the element\r
- new ko.templateSources.anonymousTemplate(element).text(element.innerHTML);\r
- ko.utils.emptyDomNode(element);\r
- }\r
- return { 'controlsDescendantBindings': true };\r
- },\r
- 'update': function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r
- var bindingValue = ko.utils.unwrapObservable(valueAccessor());\r
- var templateName; \r
- var shouldDisplay = true;\r
- \r
- if (typeof bindingValue == "string") {\r
- templateName = bindingValue;\r
- } else {\r
- templateName = bindingValue.name;\r
- \r
- // Support "if"/"ifnot" conditions\r
- if ('if' in bindingValue)\r
- shouldDisplay = shouldDisplay && ko.utils.unwrapObservable(bindingValue['if']);\r
- if ('ifnot' in bindingValue)\r
- shouldDisplay = shouldDisplay && !ko.utils.unwrapObservable(bindingValue['ifnot']);\r
- } \r
- \r
- var templateSubscription = null;\r
- \r
- if ((typeof bindingValue === 'object') && ('foreach' in bindingValue)) { // Note: can't use 'in' operator on strings\r
- // Render once for each data point (treating data set as empty if shouldDisplay==false)\r
- var dataArray = (shouldDisplay && bindingValue['foreach']) || [];\r
- templateSubscription = ko.renderTemplateForEach(templateName || element, dataArray, /* options: */ bindingValue, element, bindingContext);\r
- } else {\r
- if (shouldDisplay) {\r
- // Render once for this single data point (or use the viewModel if no data was provided)\r
- var innerBindingContext = (typeof bindingValue == 'object') && ('data' in bindingValue)\r
- ? bindingContext['createChildContext'](ko.utils.unwrapObservable(bindingValue['data'])) // Given an explitit 'data' value, we create a child binding context for it\r
- : bindingContext; // Given no explicit 'data' value, we retain the same binding context\r
- templateSubscription = ko.renderTemplate(templateName || element, innerBindingContext, /* options: */ bindingValue, element);\r
- } else\r
- ko.virtualElements.emptyNode(element);\r
- }\r
- \r
- // It only makes sense to have a single template subscription per element (otherwise which one should have its output displayed?)\r
- disposeOldSubscriptionAndStoreNewOne(element, templateSubscription);\r
- }\r
- };\r
-\r
- // Anonymous templates can't be rewritten. Give a nice error message if you try to do it.\r
- ko.jsonExpressionRewriting.bindingRewriteValidators['template'] = function(bindingValue) {\r
- var parsedBindingValue = ko.jsonExpressionRewriting.parseObjectLiteral(bindingValue);\r
-\r
- if ((parsedBindingValue.length == 1) && parsedBindingValue[0]['unknown'])\r
- return null; // It looks like a string literal, not an object literal, so treat it as a named template (which is allowed for rewriting)\r
-\r
- if (ko.jsonExpressionRewriting.keyValueArrayContainsKey(parsedBindingValue, "name"))\r
- return null; // Named templates can be rewritten, so return "no error"\r
- return "This template engine does not support anonymous templates nested within its templates";\r
- };\r
-\r
- ko.virtualElements.allowedBindings['template'] = true;\r
-})();\r
-\r
-ko.exportSymbol('setTemplateEngine', ko.setTemplateEngine);\r
-ko.exportSymbol('renderTemplate', ko.renderTemplate);\r
-\r
-(function () {\r
- // Simple calculation based on Levenshtein distance.\r
- function calculateEditDistanceMatrix(oldArray, newArray, maxAllowedDistance) {\r
- var distances = [];\r
- for (var i = 0; i <= newArray.length; i++)\r
- distances[i] = [];\r
-\r
- // Top row - transform old array into empty array via deletions\r
- for (var i = 0, j = Math.min(oldArray.length, maxAllowedDistance); i <= j; i++)\r
- distances[0][i] = i;\r
-\r
- // Left row - transform empty array into new array via additions\r
- for (var i = 1, j = Math.min(newArray.length, maxAllowedDistance); i <= j; i++) {\r
- distances[i][0] = i;\r
- }\r
-\r
- // Fill out the body of the array\r
- var oldIndex, oldIndexMax = oldArray.length, newIndex, newIndexMax = newArray.length;\r
- var distanceViaAddition, distanceViaDeletion;\r
- for (oldIndex = 1; oldIndex <= oldIndexMax; oldIndex++) {\r
- var newIndexMinForRow = Math.max(1, oldIndex - maxAllowedDistance);\r
- var newIndexMaxForRow = Math.min(newIndexMax, oldIndex + maxAllowedDistance);\r
- for (newIndex = newIndexMinForRow; newIndex <= newIndexMaxForRow; newIndex++) {\r
- if (oldArray[oldIndex - 1] === newArray[newIndex - 1])\r
- distances[newIndex][oldIndex] = distances[newIndex - 1][oldIndex - 1];\r
- else {\r
- var northDistance = distances[newIndex - 1][oldIndex] === undefined ? Number.MAX_VALUE : distances[newIndex - 1][oldIndex] + 1;\r
- var westDistance = distances[newIndex][oldIndex - 1] === undefined ? Number.MAX_VALUE : distances[newIndex][oldIndex - 1] + 1;\r
- distances[newIndex][oldIndex] = Math.min(northDistance, westDistance);\r
- }\r
- }\r
- }\r
-\r
- return distances;\r
- }\r
-\r
- function findEditScriptFromEditDistanceMatrix(editDistanceMatrix, oldArray, newArray) {\r
- var oldIndex = oldArray.length;\r
- var newIndex = newArray.length;\r
- var editScript = [];\r
- var maxDistance = editDistanceMatrix[newIndex][oldIndex];\r
- if (maxDistance === undefined)\r
- return null; // maxAllowedDistance must be too small\r
- while ((oldIndex > 0) || (newIndex > 0)) {\r
- var me = editDistanceMatrix[newIndex][oldIndex];\r
- var distanceViaAdd = (newIndex > 0) ? editDistanceMatrix[newIndex - 1][oldIndex] : maxDistance + 1;\r
- var distanceViaDelete = (oldIndex > 0) ? editDistanceMatrix[newIndex][oldIndex - 1] : maxDistance + 1;\r
- var distanceViaRetain = (newIndex > 0) && (oldIndex > 0) ? editDistanceMatrix[newIndex - 1][oldIndex - 1] : maxDistance + 1;\r
- if ((distanceViaAdd === undefined) || (distanceViaAdd < me - 1)) distanceViaAdd = maxDistance + 1;\r
- if ((distanceViaDelete === undefined) || (distanceViaDelete < me - 1)) distanceViaDelete = maxDistance + 1;\r
- if (distanceViaRetain < me - 1) distanceViaRetain = maxDistance + 1;\r
-\r
- if ((distanceViaAdd <= distanceViaDelete) && (distanceViaAdd < distanceViaRetain)) {\r
- editScript.push({ status: "added", value: newArray[newIndex - 1] });\r
- newIndex--;\r
- } else if ((distanceViaDelete < distanceViaAdd) && (distanceViaDelete < distanceViaRetain)) {\r
- editScript.push({ status: "deleted", value: oldArray[oldIndex - 1] });\r
- oldIndex--;\r
- } else {\r
- editScript.push({ status: "retained", value: oldArray[oldIndex - 1] });\r
- newIndex--;\r
- oldIndex--;\r
- }\r
- }\r
- return editScript.reverse();\r
- }\r
-\r
- ko.utils.compareArrays = function (oldArray, newArray, maxEditsToConsider) {\r
- if (maxEditsToConsider === undefined) {\r
- return ko.utils.compareArrays(oldArray, newArray, 1) // First consider likely case where there is at most one edit (very fast)\r
- || ko.utils.compareArrays(oldArray, newArray, 10) // If that fails, account for a fair number of changes while still being fast\r
- || ko.utils.compareArrays(oldArray, newArray, Number.MAX_VALUE); // Ultimately give the right answer, even though it may take a long time\r
- } else {\r
- oldArray = oldArray || [];\r
- newArray = newArray || [];\r
- var editDistanceMatrix = calculateEditDistanceMatrix(oldArray, newArray, maxEditsToConsider);\r
- return findEditScriptFromEditDistanceMatrix(editDistanceMatrix, oldArray, newArray);\r
- }\r
- }; \r
-})();\r
-\r
-ko.exportSymbol('utils.compareArrays', ko.utils.compareArrays);\r
-\r
-(function () {\r
- // Objective:\r
- // * Given an input array, a container DOM node, and a function from array elements to arrays of DOM nodes,\r
- // map the array elements to arrays of DOM nodes, concatenate together all these arrays, and use them to populate the container DOM node\r
- // * Next time we're given the same combination of things (with the array possibly having mutated), update the container DOM node\r
- // 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\r
- // previously mapped - retain those nodes, and just insert/delete other ones\r
-\r
- // "callbackAfterAddingNodes" will be invoked after any "mapping"-generated nodes are inserted into the container node\r
- // You can use this, for example, to activate bindings on those nodes.\r
-\r
- function fixUpVirtualElements(contiguousNodeArray) {\r
- // Ensures that contiguousNodeArray really *is* an array of contiguous siblings, even if some of the interior\r
- // ones have changed since your array was first built (e.g., because your array contains virtual elements, and\r
- // their virtual children changed when binding was applied to them).\r
- // This is needed so that we can reliably remove or update the nodes corresponding to a given array item\r
-\r
- if (contiguousNodeArray.length > 2) {\r
- // Build up the actual new contiguous node set\r
- var current = contiguousNodeArray[0], last = contiguousNodeArray[contiguousNodeArray.length - 1], newContiguousSet = [current];\r
- while (current !== last) {\r
- current = current.nextSibling;\r
- if (!current) // Won't happen, except if the developer has manually removed some DOM elements (then we're in an undefined scenario)\r
- return;\r
- newContiguousSet.push(current);\r
- }\r
-\r
- // ... then mutate the input array to match this. \r
- // (The following line replaces the contents of contiguousNodeArray with newContiguousSet)\r
- Array.prototype.splice.apply(contiguousNodeArray, [0, contiguousNodeArray.length].concat(newContiguousSet));\r
- }\r
- }\r
-\r
- function mapNodeAndRefreshWhenChanged(containerNode, mapping, valueToMap, callbackAfterAddingNodes) {\r
- // Map this array value inside a dependentObservable so we re-map when any dependency changes\r
- var mappedNodes = [];\r
- var dependentObservable = ko.dependentObservable(function() {\r
- var newMappedNodes = mapping(valueToMap) || [];\r
- \r
- // On subsequent evaluations, just replace the previously-inserted DOM nodes\r
- if (mappedNodes.length > 0) {\r
- fixUpVirtualElements(mappedNodes);\r
- ko.utils.replaceDomNodes(mappedNodes, newMappedNodes);\r
- if (callbackAfterAddingNodes)\r
- callbackAfterAddingNodes(valueToMap, newMappedNodes);\r
- }\r
- \r
- // Replace the contents of the mappedNodes array, thereby updating the record\r
- // of which nodes would be deleted if valueToMap was itself later removed\r
- mappedNodes.splice(0, mappedNodes.length);\r
- ko.utils.arrayPushAll(mappedNodes, newMappedNodes);\r
- }, null, { 'disposeWhenNodeIsRemoved': containerNode, 'disposeWhen': function() { return (mappedNodes.length == 0) || !ko.utils.domNodeIsAttachedToDocument(mappedNodes[0]) } });\r
- return { mappedNodes : mappedNodes, dependentObservable : dependentObservable };\r
- }\r
- \r
- var lastMappingResultDomDataKey = "setDomNodeChildrenFromArrayMapping_lastMappingResult";\r
-\r
- ko.utils.setDomNodeChildrenFromArrayMapping = function (domNode, array, mapping, options, callbackAfterAddingNodes) {\r
- // Compare the provided array against the previous one\r
- array = array || [];\r
- options = options || {};\r
- var isFirstExecution = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) === undefined;\r
- var lastMappingResult = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) || [];\r
- var lastArray = ko.utils.arrayMap(lastMappingResult, function (x) { return x.arrayEntry; });\r
- var editScript = ko.utils.compareArrays(lastArray, array);\r
-\r
- // Build the new mapping result\r
- var newMappingResult = [];\r
- var lastMappingResultIndex = 0;\r
- var nodesToDelete = [];\r
- var nodesAdded = [];\r
- var insertAfterNode = null;\r
- for (var i = 0, j = editScript.length; i < j; i++) {\r
- switch (editScript[i].status) {\r
- case "retained":\r
- // Just keep the information - don't touch the nodes\r
- var dataToRetain = lastMappingResult[lastMappingResultIndex];\r
- newMappingResult.push(dataToRetain);\r
- if (dataToRetain.domNodes.length > 0)\r
- insertAfterNode = dataToRetain.domNodes[dataToRetain.domNodes.length - 1];\r
- lastMappingResultIndex++;\r
- break;\r
-\r
- case "deleted":\r
- // Stop tracking changes to the mapping for these nodes\r
- lastMappingResult[lastMappingResultIndex].dependentObservable.dispose();\r
- \r
- // Queue these nodes for later removal\r
- fixUpVirtualElements(lastMappingResult[lastMappingResultIndex].domNodes);\r
- ko.utils.arrayForEach(lastMappingResult[lastMappingResultIndex].domNodes, function (node) {\r
- nodesToDelete.push({\r
- element: node,\r
- index: i,\r
- value: editScript[i].value\r
- });\r
- insertAfterNode = node;\r
- });\r
- lastMappingResultIndex++;\r
- break;\r
-\r
- case "added": \r
- var valueToMap = editScript[i].value;\r
- var mapData = mapNodeAndRefreshWhenChanged(domNode, mapping, valueToMap, callbackAfterAddingNodes);\r
- var mappedNodes = mapData.mappedNodes;\r
- \r
- // On the first evaluation, insert the nodes at the current insertion point\r
- newMappingResult.push({ arrayEntry: editScript[i].value, domNodes: mappedNodes, dependentObservable: mapData.dependentObservable });\r
- for (var nodeIndex = 0, nodeIndexMax = mappedNodes.length; nodeIndex < nodeIndexMax; nodeIndex++) {\r
- var node = mappedNodes[nodeIndex];\r
- nodesAdded.push({\r
- element: node,\r
- index: i,\r
- value: editScript[i].value\r
- });\r
- if (insertAfterNode == null) {\r
- // Insert "node" (the newly-created node) as domNode's first child\r
- ko.virtualElements.prepend(domNode, node);\r
- } else {\r
- // Insert "node" into "domNode" immediately after "insertAfterNode"\r
- ko.virtualElements.insertAfter(domNode, node, insertAfterNode);\r
- }\r
- insertAfterNode = node;\r
- } \r
- if (callbackAfterAddingNodes)\r
- callbackAfterAddingNodes(valueToMap, mappedNodes);\r
- break;\r
- }\r
- }\r
- \r
- ko.utils.arrayForEach(nodesToDelete, function (node) { ko.cleanNode(node.element) });\r
-\r
- var invokedBeforeRemoveCallback = false;\r
- if (!isFirstExecution) {\r
- if (options['afterAdd']) {\r
- for (var i = 0; i < nodesAdded.length; i++)\r
- options['afterAdd'](nodesAdded[i].element, nodesAdded[i].index, nodesAdded[i].value);\r
- }\r
- if (options['beforeRemove']) {\r
- for (var i = 0; i < nodesToDelete.length; i++)\r
- options['beforeRemove'](nodesToDelete[i].element, nodesToDelete[i].index, nodesToDelete[i].value);\r
- invokedBeforeRemoveCallback = true;\r
- }\r
- }\r
- if (!invokedBeforeRemoveCallback)\r
- ko.utils.arrayForEach(nodesToDelete, function (node) {\r
- ko.removeNode(node.element);\r
- });\r
-\r
- // Store a copy of the array items we just considered so we can difference it next time\r
- ko.utils.domData.set(domNode, lastMappingResultDomDataKey, newMappingResult);\r
- }\r
-})();\r
-\r
-ko.exportSymbol('utils.setDomNodeChildrenFromArrayMapping', ko.utils.setDomNodeChildrenFromArrayMapping);\r
-ko.nativeTemplateEngine = function () {\r
- this['allowTemplateRewriting'] = false;\r
-}\r
-\r
-ko.nativeTemplateEngine.prototype = new ko.templateEngine();\r
-ko.nativeTemplateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options) {\r
- var templateText = templateSource.text();\r
- return ko.utils.parseHtmlFragment(templateText);\r
-};\r
-\r
-ko.nativeTemplateEngine.instance = new ko.nativeTemplateEngine();\r
-ko.setTemplateEngine(ko.nativeTemplateEngine.instance);\r
-\r
-ko.exportSymbol('nativeTemplateEngine', ko.nativeTemplateEngine);(function() {\r
- ko.jqueryTmplTemplateEngine = function () {\r
- // Detect which version of jquery-tmpl you're using. Unfortunately jquery-tmpl \r
- // doesn't expose a version number, so we have to infer it.\r
- // Note that as of Knockout 1.3, we only support jQuery.tmpl 1.0.0pre and later,\r
- // which KO internally refers to as version "2", so older versions are no longer detected.\r
- var jQueryTmplVersion = this.jQueryTmplVersion = (function() { \r
- if ((typeof(jQuery) == "undefined") || !(jQuery['tmpl']))\r
- return 0;\r
- // Since it exposes no official version number, we use our own numbering system. To be updated as jquery-tmpl evolves.\r
- try {\r
- if (jQuery['tmpl']['tag']['tmpl']['open'].toString().indexOf('__') >= 0) {\r
- // Since 1.0.0pre, custom tags should append markup to an array called "__"\r
- return 2; // Final version of jquery.tmpl\r
- } \r
- } catch(ex) { /* Apparently not the version we were looking for */ }\r
- \r
- return 1; // Any older version that we don't support\r
- })();\r
- \r
- function ensureHasReferencedJQueryTemplates() {\r
- if (jQueryTmplVersion < 2)\r
- throw new Error("Your version of jQuery.tmpl is too old. Please upgrade to jQuery.tmpl 1.0.0pre or later.");\r
- }\r
-\r
- function executeTemplate(compiledTemplate, data, jQueryTemplateOptions) {\r
- return jQuery['tmpl'](compiledTemplate, data, jQueryTemplateOptions);\r
- }\r
- \r
- this['renderTemplateSource'] = function(templateSource, bindingContext, options) {\r
- options = options || {};\r
- ensureHasReferencedJQueryTemplates();\r
- \r
- // Ensure we have stored a precompiled version of this template (don't want to reparse on every render)\r
- var precompiled = templateSource['data']('precompiled');\r
- if (!precompiled) {\r
- var templateText = templateSource.text() || "";\r
- // Wrap in "with($whatever.koBindingContext) { ... }"\r
- templateText = "{{ko_with $item.koBindingContext}}" + templateText + "{{/ko_with}}";\r
-\r
- precompiled = jQuery['template'](null, templateText);\r
- templateSource['data']('precompiled', precompiled);\r
- }\r
- \r
- var data = [bindingContext['$data']]; // Prewrap the data in an array to stop jquery.tmpl from trying to unwrap any arrays\r
- var jQueryTemplateOptions = jQuery['extend']({ 'koBindingContext': bindingContext }, options['templateOptions']);\r
-\r
- var resultNodes = executeTemplate(precompiled, data, jQueryTemplateOptions);\r
- resultNodes['appendTo'](document.createElement("div")); // Using "appendTo" forces jQuery/jQuery.tmpl to perform necessary cleanup work\r
- jQuery['fragments'] = {}; // Clear jQuery's fragment cache to avoid a memory leak after a large number of template renders\r
- return resultNodes; \r
- };\r
- \r
- this['createJavaScriptEvaluatorBlock'] = function(script) {\r
- return "{{ko_code ((function() { return " + script + " })()) }}";\r
- };\r
- \r
- this['addTemplate'] = function(templateName, templateMarkup) {\r
- document.write("<script type='text/html' id='" + templateName + "'>" + templateMarkup + "</script>");\r
- };\r
- \r
- if (jQueryTmplVersion > 0) {\r
- jQuery['tmpl']['tag']['ko_code'] = {\r
- open: "__.push($1 || '');"\r
- };\r
- jQuery['tmpl']['tag']['ko_with'] = {\r
- open: "with($1) {",\r
- close: "} "\r
- };\r
- }\r
- };\r
- \r
- ko.jqueryTmplTemplateEngine.prototype = new ko.templateEngine();\r
- \r
- // Use this one by default *only if jquery.tmpl is referenced*\r
- var jqueryTmplTemplateEngineInstance = new ko.jqueryTmplTemplateEngine();\r
- if (jqueryTmplTemplateEngineInstance.jQueryTmplVersion > 0)\r
- ko.setTemplateEngine(jqueryTmplTemplateEngineInstance);\r
- \r
- ko.exportSymbol('jqueryTmplTemplateEngine', ko.jqueryTmplTemplateEngine);\r
-})();});\r
-})(window,document,navigator);
\ No newline at end of file
projects / archiva.git / commitdiff