From 18c832b1c49466f0e965f0869bd35c5bbfe3c9a5 Mon Sep 17 00:00:00 2001 From: Olivier Lamy Date: Tue, 16 Oct 2012 11:54:50 +0000 Subject: [PATCH] delete knockout 2.0.0 git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1398753 13f79535-47bb-0310-9956-ffa450edef68 --- .../main/webapp/js/knockout-2.0.0.debug.js | 3223 ----------------- 1 file changed, 3223 deletions(-) delete mode 100644 archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js diff --git a/archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js b/archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js deleted file mode 100644 index 56ce31566..000000000 --- a/archiva-modules/archiva-web/archiva-webapp-js/src/main/webapp/js/knockout-2.0.0.debug.js +++ /dev/null @@ -1,3223 +0,0 @@ -// Knockout JavaScript library v2.0.0 -// (c) Steven Sanderson - http://knockoutjs.com/ -// License: MIT (http://www.opensource.org/licenses/mit-license.php) - -(function(window,undefined){ -var ko = window["ko"] = {}; -// Google Closure Compiler helpers (used only to make the minified file smaller) -ko.exportSymbol = function(publicPath, object) { - var tokens = publicPath.split("."); - var target = window; - for (var i = 0; i < tokens.length - 1; i++) - target = target[tokens[i]]; - target[tokens[tokens.length - 1]] = object; -}; -ko.exportProperty = function(owner, publicName, object) { - owner[publicName] = object; -}; -ko.utils = new (function () { - var stringTrimRegex = /^(\s|\u00A0)+|(\s|\u00A0)+$/g; - - // Represent the known event types in a compact way, then at runtime transform it into a hash with event name as key (for fast lookup) - var knownEvents = {}, knownEventTypesByEventName = {}; - var keyEventTypeName = /Firefox\/2/i.test(navigator.userAgent) ? 'KeyboardEvent' : 'UIEvents'; - knownEvents[keyEventTypeName] = ['keyup', 'keydown', 'keypress']; - knownEvents['MouseEvents'] = ['click', 'dblclick', 'mousedown', 'mouseup', 'mousemove', 'mouseover', 'mouseout', 'mouseenter', 'mouseleave']; - for (var eventType in knownEvents) { - var knownEventsForType = knownEvents[eventType]; - if (knownEventsForType.length) { - for (var i = 0, j = knownEventsForType.length; i < j; i++) - knownEventTypesByEventName[knownEventsForType[i]] = eventType; - } - } - - // Detect IE versions for bug workarounds (uses IE conditionals, not UA string, for robustness) - var ieVersion = (function() { - var version = 3, div = document.createElement('div'), iElems = div.getElementsByTagName('i'); - - // Keep constructing conditional HTML blocks until we hit one that resolves to an empty fragment - while ( - div.innerHTML = '', - iElems[0] - ); - return version > 4 ? version : undefined; - }()); - var isIe6 = ieVersion === 6, - isIe7 = ieVersion === 7; - - function isClickOnCheckableElement(element, eventType) { - if ((element.tagName != "INPUT") || !element.type) return false; - if (eventType.toLowerCase() != "click") return false; - var inputType = element.type.toLowerCase(); - return (inputType == "checkbox") || (inputType == "radio"); - } - - return { - fieldsIncludedWithJsonPost: ['authenticity_token', /^__RequestVerificationToken(_.*)?$/], - - arrayForEach: function (array, action) { - for (var i = 0, j = array.length; i < j; i++) - action(array[i]); - }, - - arrayIndexOf: function (array, item) { - if (typeof Array.prototype.indexOf == "function") - return Array.prototype.indexOf.call(array, item); - for (var i = 0, j = array.length; i < j; i++) - if (array[i] === item) - return i; - return -1; - }, - - arrayFirst: function (array, predicate, predicateOwner) { - for (var i = 0, j = array.length; i < j; i++) - if (predicate.call(predicateOwner, array[i])) - return array[i]; - return null; - }, - - arrayRemoveItem: function (array, itemToRemove) { - var index = ko.utils.arrayIndexOf(array, itemToRemove); - if (index >= 0) - array.splice(index, 1); - }, - - arrayGetDistinctValues: function (array) { - array = array || []; - var result = []; - for (var i = 0, j = array.length; i < j; i++) { - if (ko.utils.arrayIndexOf(result, array[i]) < 0) - result.push(array[i]); - } - return result; - }, - - arrayMap: function (array, mapping) { - array = array || []; - var result = []; - for (var i = 0, j = array.length; i < j; i++) - result.push(mapping(array[i])); - return result; - }, - - arrayFilter: function (array, predicate) { - array = array || []; - var result = []; - for (var i = 0, j = array.length; i < j; i++) - if (predicate(array[i])) - result.push(array[i]); - return result; - }, - - arrayPushAll: function (array, valuesToPush) { - for (var i = 0, j = valuesToPush.length; i < j; i++) - array.push(valuesToPush[i]); - return array; - }, - - extend: function (target, source) { - for(var prop in source) { - if(source.hasOwnProperty(prop)) { - target[prop] = source[prop]; - } - } - return target; - }, - - emptyDomNode: function (domNode) { - while (domNode.firstChild) { - ko.removeNode(domNode.firstChild); - } - }, - - setDomNodeChildren: function (domNode, childNodes) { - ko.utils.emptyDomNode(domNode); - if (childNodes) { - ko.utils.arrayForEach(childNodes, function (childNode) { - domNode.appendChild(childNode); - }); - } - }, - - replaceDomNodes: function (nodeToReplaceOrNodeArray, newNodesArray) { - var nodesToReplaceArray = nodeToReplaceOrNodeArray.nodeType ? [nodeToReplaceOrNodeArray] : nodeToReplaceOrNodeArray; - if (nodesToReplaceArray.length > 0) { - var insertionPoint = nodesToReplaceArray[0]; - var parent = insertionPoint.parentNode; - for (var i = 0, j = newNodesArray.length; i < j; i++) - parent.insertBefore(newNodesArray[i], insertionPoint); - for (var i = 0, j = nodesToReplaceArray.length; i < j; i++) { - ko.removeNode(nodesToReplaceArray[i]); - } - } - }, - - setOptionNodeSelectionState: function (optionNode, isSelected) { - // IE6 sometimes throws "unknown error" if you try to write to .selected directly, whereas Firefox struggles with setAttribute. Pick one based on browser. - if (navigator.userAgent.indexOf("MSIE 6") >= 0) - optionNode.setAttribute("selected", isSelected); - else - optionNode.selected = isSelected; - }, - - stringTrim: function (string) { - return (string || "").replace(stringTrimRegex, ""); - }, - - stringTokenize: function (string, delimiter) { - var result = []; - var tokens = (string || "").split(delimiter); - for (var i = 0, j = tokens.length; i < j; i++) { - var trimmed = ko.utils.stringTrim(tokens[i]); - if (trimmed !== "") - result.push(trimmed); - } - return result; - }, - - stringStartsWith: function (string, startsWith) { - string = string || ""; - if (startsWith.length > string.length) - return false; - return string.substring(0, startsWith.length) === startsWith; - }, - - evalWithinScope: function (expression /*, scope1, scope2, scope3... */) { - // Build the source for a function that evaluates "expression" - // For each scope variable, add an extra level of "with" nesting - // Example result: with(sc[1]) { with(sc[0]) { return (expression) } } - var scopes = Array.prototype.slice.call(arguments, 1); - var functionBody = "return (" + expression + ")"; - for (var i = 0; i < scopes.length; i++) { - if (scopes[i] && typeof scopes[i] == "object") - functionBody = "with(sc[" + i + "]) { " + functionBody + " } "; - } - return (new Function("sc", functionBody))(scopes); - }, - - domNodeIsContainedBy: function (node, containedByNode) { - if (containedByNode.compareDocumentPosition) - return (containedByNode.compareDocumentPosition(node) & 16) == 16; - while (node != null) { - if (node == containedByNode) - return true; - node = node.parentNode; - } - return false; - }, - - domNodeIsAttachedToDocument: function (node) { - return ko.utils.domNodeIsContainedBy(node, document); - }, - - registerEventHandler: function (element, eventType, handler) { - if (typeof jQuery != "undefined") { - if (isClickOnCheckableElement(element, eventType)) { - // For click events on checkboxes, jQuery interferes with the event handling in an awkward way: - // it toggles the element checked state *after* the click event handlers run, whereas native - // click events toggle the checked state *before* the event handler. - // Fix this by intecepting the handler and applying the correct checkedness before it runs. - var originalHandler = handler; - handler = function(event, eventData) { - var jQuerySuppliedCheckedState = this.checked; - if (eventData) - this.checked = eventData.checkedStateBeforeEvent !== true; - originalHandler.call(this, event); - this.checked = jQuerySuppliedCheckedState; // Restore the state jQuery applied - }; - } - jQuery(element)['bind'](eventType, handler); - } else if (typeof element.addEventListener == "function") - element.addEventListener(eventType, handler, false); - else if (typeof element.attachEvent != "undefined") - element.attachEvent("on" + eventType, function (event) { - handler.call(element, event); - }); - else - throw new Error("Browser doesn't support addEventListener or attachEvent"); - }, - - triggerEvent: function (element, eventType) { - if (!(element && element.nodeType)) - throw new Error("element must be a DOM node when calling triggerEvent"); - - if (typeof jQuery != "undefined") { - var eventData = []; - if (isClickOnCheckableElement(element, eventType)) { - // Work around the jQuery "click events on checkboxes" issue described above by storing the original checked state before triggering the handler - eventData.push({ checkedStateBeforeEvent: element.checked }); - } - jQuery(element)['trigger'](eventType, eventData); - } else if (typeof document.createEvent == "function") { - if (typeof element.dispatchEvent == "function") { - var eventCategory = knownEventTypesByEventName[eventType] || "HTMLEvents"; - var event = document.createEvent(eventCategory); - event.initEvent(eventType, true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, element); - element.dispatchEvent(event); - } - else - throw new Error("The supplied element doesn't support dispatchEvent"); - } else if (typeof element.fireEvent != "undefined") { - // Unlike other browsers, IE doesn't change the checked state of checkboxes/radiobuttons when you trigger their "click" event - // so to make it consistent, we'll do it manually here - if (eventType == "click") { - if ((element.tagName == "INPUT") && ((element.type.toLowerCase() == "checkbox") || (element.type.toLowerCase() == "radio"))) - element.checked = element.checked !== true; - } - element.fireEvent("on" + eventType); - } - else - throw new Error("Browser doesn't support triggering events"); - }, - - unwrapObservable: function (value) { - return ko.isObservable(value) ? value() : value; - }, - - domNodeHasCssClass: function (node, className) { - var currentClassNames = (node.className || "").split(/\s+/); - return ko.utils.arrayIndexOf(currentClassNames, className) >= 0; - }, - - toggleDomNodeCssClass: function (node, className, shouldHaveClass) { - var hasClass = ko.utils.domNodeHasCssClass(node, className); - if (shouldHaveClass && !hasClass) { - node.className = (node.className || "") + " " + className; - } else if (hasClass && !shouldHaveClass) { - var currentClassNames = (node.className || "").split(/\s+/); - var newClassName = ""; - for (var i = 0; i < currentClassNames.length; i++) - if (currentClassNames[i] != className) - newClassName += currentClassNames[i] + " "; - node.className = ko.utils.stringTrim(newClassName); - } - }, - - outerHTML: function(node) { - // For Chrome on non-text nodes - // (Although IE supports outerHTML, the way it formats HTML is inconsistent - sometimes closing tags are omitted, sometimes not. That caused https://github.com/SteveSanderson/knockout/issues/212.) - if (ieVersion === undefined) { - var nativeOuterHtml = node.outerHTML; - if (typeof nativeOuterHtml == "string") - return nativeOuterHtml; - } - - // Other browsers - var dummyContainer = window.document.createElement("div"); - dummyContainer.appendChild(node.cloneNode(true)); - return dummyContainer.innerHTML; - }, - - setTextContent: function(element, textContent) { - var value = ko.utils.unwrapObservable(textContent); - if ((value === null) || (value === undefined)) - value = ""; - - 'innerText' in element ? element.innerText = value - : element.textContent = value; - - if (ieVersion >= 9) { - // Believe it or not, this actually fixes an IE9 rendering bug. Insane. https://github.com/SteveSanderson/knockout/issues/209 - element.innerHTML = element.innerHTML; - } - }, - - range: function (min, max) { - min = ko.utils.unwrapObservable(min); - max = ko.utils.unwrapObservable(max); - var result = []; - for (var i = min; i <= max; i++) - result.push(i); - return result; - }, - - makeArray: function(arrayLikeObject) { - var result = []; - for (var i = 0, j = arrayLikeObject.length; i < j; i++) { - result.push(arrayLikeObject[i]); - }; - return result; - }, - - isIe6 : isIe6, - isIe7 : isIe7, - - getFormFields: function(form, fieldName) { - var fields = ko.utils.makeArray(form.getElementsByTagName("INPUT")).concat(ko.utils.makeArray(form.getElementsByTagName("TEXTAREA"))); - var isMatchingField = (typeof fieldName == 'string') - ? function(field) { return field.name === fieldName } - : function(field) { return fieldName.test(field.name) }; // Treat fieldName as regex or object containing predicate - var matches = []; - for (var i = fields.length - 1; i >= 0; i--) { - if (isMatchingField(fields[i])) - matches.push(fields[i]); - }; - return matches; - }, - - parseJson: function (jsonString) { - if (typeof jsonString == "string") { - jsonString = ko.utils.stringTrim(jsonString); - if (jsonString) { - if (window.JSON && window.JSON.parse) // Use native parsing where available - return window.JSON.parse(jsonString); - return (new Function("return " + jsonString))(); // Fallback on less safe parsing for older browsers - } - } - return null; - }, - - stringifyJson: function (data) { - if ((typeof JSON == "undefined") || (typeof JSON.stringify == "undefined")) - throw new Error("Cannot find JSON.stringify(). Some browsers (e.g., IE < 8) don't support it natively, but you can overcome this by adding a script reference to json2.js, downloadable from http://www.json.org/json2.js"); - return JSON.stringify(ko.utils.unwrapObservable(data)); - }, - - postJson: function (urlOrForm, data, options) { - options = options || {}; - var params = options['params'] || {}; - var includeFields = options['includeFields'] || this.fieldsIncludedWithJsonPost; - var url = urlOrForm; - - // If we were given a form, use its 'action' URL and pick out any requested field values - if((typeof urlOrForm == 'object') && (urlOrForm.tagName == "FORM")) { - var originalForm = urlOrForm; - url = originalForm.action; - for (var i = includeFields.length - 1; i >= 0; i--) { - var fields = ko.utils.getFormFields(originalForm, includeFields[i]); - for (var j = fields.length - 1; j >= 0; j--) - params[fields[j].name] = fields[j].value; - } - } - - data = ko.utils.unwrapObservable(data); - var form = document.createElement("FORM"); - form.style.display = "none"; - form.action = url; - form.method = "post"; - for (var key in data) { - var input = document.createElement("INPUT"); - input.name = key; - input.value = ko.utils.stringifyJson(ko.utils.unwrapObservable(data[key])); - form.appendChild(input); - } - for (var key in params) { - var input = document.createElement("INPUT"); - input.name = key; - input.value = params[key]; - form.appendChild(input); - } - document.body.appendChild(form); - options['submitter'] ? options['submitter'](form) : form.submit(); - setTimeout(function () { form.parentNode.removeChild(form); }, 0); - } - } -})(); - -ko.exportSymbol('ko.utils', ko.utils); -ko.utils.arrayForEach([ - ['arrayForEach', ko.utils.arrayForEach], - ['arrayFirst', ko.utils.arrayFirst], - ['arrayFilter', ko.utils.arrayFilter], - ['arrayGetDistinctValues', ko.utils.arrayGetDistinctValues], - ['arrayIndexOf', ko.utils.arrayIndexOf], - ['arrayMap', ko.utils.arrayMap], - ['arrayPushAll', ko.utils.arrayPushAll], - ['arrayRemoveItem', ko.utils.arrayRemoveItem], - ['extend', ko.utils.extend], - ['fieldsIncludedWithJsonPost', ko.utils.fieldsIncludedWithJsonPost], - ['getFormFields', ko.utils.getFormFields], - ['postJson', ko.utils.postJson], - ['parseJson', ko.utils.parseJson], - ['registerEventHandler', ko.utils.registerEventHandler], - ['stringifyJson', ko.utils.stringifyJson], - ['range', ko.utils.range], - ['toggleDomNodeCssClass', ko.utils.toggleDomNodeCssClass], - ['triggerEvent', ko.utils.triggerEvent], - ['unwrapObservable', ko.utils.unwrapObservable] -], function(item) { - ko.exportSymbol('ko.utils.' + item[0], item[1]); -}); - -if (!Function.prototype['bind']) { - // Function.prototype.bind is a standard part of ECMAScript 5th Edition (December 2009, http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf) - // In case the browser doesn't implement it natively, provide a JavaScript implementation. This implementation is based on the one in prototype.js - Function.prototype['bind'] = function (object) { - var originalFunction = this, args = Array.prototype.slice.call(arguments), object = args.shift(); - return function () { - return originalFunction.apply(object, args.concat(Array.prototype.slice.call(arguments))); - }; - }; -} -ko.utils.domData = new (function () { - var uniqueId = 0; - var dataStoreKeyExpandoPropertyName = "__ko__" + (new Date).getTime(); - var dataStore = {}; - return { - get: function (node, key) { - var allDataForNode = ko.utils.domData.getAll(node, false); - return allDataForNode === undefined ? undefined : allDataForNode[key]; - }, - set: function (node, key, value) { - if (value === undefined) { - // Make sure we don't actually create a new domData key if we are actually deleting a value - if (ko.utils.domData.getAll(node, false) === undefined) - return; - } - var allDataForNode = ko.utils.domData.getAll(node, true); - allDataForNode[key] = value; - }, - getAll: function (node, createIfNotFound) { - var dataStoreKey = node[dataStoreKeyExpandoPropertyName]; - var hasExistingDataStore = dataStoreKey && (dataStoreKey !== "null"); - if (!hasExistingDataStore) { - if (!createIfNotFound) - return undefined; - dataStoreKey = node[dataStoreKeyExpandoPropertyName] = "ko" + uniqueId++; - dataStore[dataStoreKey] = {}; - } - return dataStore[dataStoreKey]; - }, - clear: function (node) { - var dataStoreKey = node[dataStoreKeyExpandoPropertyName]; - if (dataStoreKey) { - delete dataStore[dataStoreKey]; - node[dataStoreKeyExpandoPropertyName] = null; - } - } - } -})(); - -ko.exportSymbol('ko.utils.domData', ko.utils.domData); -ko.exportSymbol('ko.utils.domData.clear', ko.utils.domData.clear); // Exporting only so specs can clear up after themselves fully -ko.utils.domNodeDisposal = new (function () { - var domDataKey = "__ko_domNodeDisposal__" + (new Date).getTime(); - - function getDisposeCallbacksCollection(node, createIfNotFound) { - var allDisposeCallbacks = ko.utils.domData.get(node, domDataKey); - if ((allDisposeCallbacks === undefined) && createIfNotFound) { - allDisposeCallbacks = []; - ko.utils.domData.set(node, domDataKey, allDisposeCallbacks); - } - return allDisposeCallbacks; - } - function destroyCallbacksCollection(node) { - ko.utils.domData.set(node, domDataKey, undefined); - } - - function cleanSingleNode(node) { - // Run all the dispose callbacks - var callbacks = getDisposeCallbacksCollection(node, false); - if (callbacks) { - callbacks = callbacks.slice(0); // Clone, as the array may be modified during iteration (typically, callbacks will remove themselves) - for (var i = 0; i < callbacks.length; i++) - callbacks[i](node); - } - - // Also erase the DOM data - ko.utils.domData.clear(node); - - // Special support for jQuery here because it's so commonly used. - // Many jQuery plugins (including jquery.tmpl) store data using jQuery's equivalent of domData - // so notify it to tear down any resources associated with the node & descendants here. - if ((typeof jQuery == "function") && (typeof jQuery['cleanData'] == "function")) - jQuery['cleanData']([node]); - } - - return { - addDisposeCallback : function(node, callback) { - if (typeof callback != "function") - throw new Error("Callback must be a function"); - getDisposeCallbacksCollection(node, true).push(callback); - }, - - removeDisposeCallback : function(node, callback) { - var callbacksCollection = getDisposeCallbacksCollection(node, false); - if (callbacksCollection) { - ko.utils.arrayRemoveItem(callbacksCollection, callback); - if (callbacksCollection.length == 0) - destroyCallbacksCollection(node); - } - }, - - cleanNode : function(node) { - if ((node.nodeType != 1) && (node.nodeType != 9)) - return; - cleanSingleNode(node); - - // Clone the descendants list in case it changes during iteration - var descendants = []; - ko.utils.arrayPushAll(descendants, node.getElementsByTagName("*")); - for (var i = 0, j = descendants.length; i < j; i++) - cleanSingleNode(descendants[i]); - }, - - removeNode : function(node) { - ko.cleanNode(node); - if (node.parentNode) - node.parentNode.removeChild(node); - } - } -})(); -ko.cleanNode = ko.utils.domNodeDisposal.cleanNode; // Shorthand name for convenience -ko.removeNode = ko.utils.domNodeDisposal.removeNode; // Shorthand name for convenience -ko.exportSymbol('ko.cleanNode', ko.cleanNode); -ko.exportSymbol('ko.removeNode', ko.removeNode); -ko.exportSymbol('ko.utils.domNodeDisposal', ko.utils.domNodeDisposal); -ko.exportSymbol('ko.utils.domNodeDisposal.addDisposeCallback', ko.utils.domNodeDisposal.addDisposeCallback); -ko.exportSymbol('ko.utils.domNodeDisposal.removeDisposeCallback', ko.utils.domNodeDisposal.removeDisposeCallback);(function () { - var leadingCommentRegex = /^(\s*)/; - - function simpleHtmlParse(html) { - // Based on jQuery's "clean" function, but only accounting for table-related elements. - // If you have referenced jQuery, this won't be used anyway - KO will use jQuery's "clean" function directly - - // Note that there's still an issue in IE < 9 whereby it will discard comment nodes that are the first child of - // a descendant node. For example: "
abc
" will get parsed as "
abc
" - // This won't affect anyone who has referenced jQuery, and there's always the workaround of inserting a dummy node - // (possibly a text node) in front of the comment. So, KO does not attempt to workaround this IE issue automatically at present. - - // Trim whitespace, otherwise indexOf won't work as expected - var tags = ko.utils.stringTrim(html).toLowerCase(), div = document.createElement("div"); - - // Finds the first match from the left column, and returns the corresponding "wrap" data from the right column - var wrap = tags.match(/^<(thead|tbody|tfoot)/) && [1, "", "
"] || - !tags.indexOf("", ""] || - (!tags.indexOf("", ""] || - /* anything else */ [0, "", ""]; - - // Go to html and back, then peel off extra wrappers - // Note that we always prefix with some dummy text, because otherwise, IE<9 will strip out leading comment nodes in descendants. Total madness. - var markup = "ignored
" + wrap[1] + html + wrap[2] + "
"; - if (typeof window['innerShiv'] == "function") { - div.appendChild(window['innerShiv'](markup)); - } else { - div.innerHTML = markup; - } - - // Move to the right depth - while (wrap[0]--) - div = div.lastChild; - - return ko.utils.makeArray(div.lastChild.childNodes); - } - - function jQueryHtmlParse(html) { - var elems = jQuery['clean']([html]); - - // As of jQuery 1.7.1, jQuery parses the HTML by appending it to some dummy parent nodes held in an in-memory document fragment. - // Unfortunately, it never clears the dummy parent nodes from the document fragment, so it leaks memory over time. - // Fix this by finding the top-most dummy parent element, and detaching it from its owner fragment. - if (elems && elems[0]) { - // Find the top-most parent element that's a direct child of a document fragment - var elem = elems[0]; - while (elem.parentNode && elem.parentNode.nodeType !== 11 /* i.e., DocumentFragment */) - elem = elem.parentNode; - // ... then detach it - if (elem.parentNode) - elem.parentNode.removeChild(elem); - } - - return elems; - } - - ko.utils.parseHtmlFragment = function(html) { - return typeof jQuery != 'undefined' ? jQueryHtmlParse(html) // As below, benefit from jQuery's optimisations where possible - : simpleHtmlParse(html); // ... otherwise, this simple logic will do in most common cases. - }; - - ko.utils.setHtml = function(node, html) { - ko.utils.emptyDomNode(node); - - if ((html !== null) && (html !== undefined)) { - if (typeof html != 'string') - html = html.toString(); - - // jQuery contains a lot of sophisticated code to parse arbitrary HTML fragments, - // for example elements which are not normally allowed to exist on their own. - // If you've referenced jQuery we'll use that rather than duplicating its code. - if (typeof jQuery != 'undefined') { - jQuery(node)['html'](html); - } else { - // ... otherwise, use KO's own parsing logic. - var parsedNodes = ko.utils.parseHtmlFragment(html); - for (var i = 0; i < parsedNodes.length; i++) - node.appendChild(parsedNodes[i]); - } - } - }; -})(); - -ko.exportSymbol('ko.utils.parseHtmlFragment', ko.utils.parseHtmlFragment); -ko.exportSymbol('ko.utils.setHtml', ko.utils.setHtml); -ko.memoization = (function () { - var memos = {}; - - function randomMax8HexChars() { - return (((1 + Math.random()) * 0x100000000) | 0).toString(16).substring(1); - } - function generateRandomId() { - return randomMax8HexChars() + randomMax8HexChars(); - } - function findMemoNodes(rootNode, appendToArray) { - if (!rootNode) - return; - if (rootNode.nodeType == 8) { - var memoId = ko.memoization.parseMemoText(rootNode.nodeValue); - if (memoId != null) - appendToArray.push({ domNode: rootNode, memoId: memoId }); - } else if (rootNode.nodeType == 1) { - for (var i = 0, childNodes = rootNode.childNodes, j = childNodes.length; i < j; i++) - findMemoNodes(childNodes[i], appendToArray); - } - } - - return { - memoize: function (callback) { - if (typeof callback != "function") - throw new Error("You can only pass a function to ko.memoization.memoize()"); - var memoId = generateRandomId(); - memos[memoId] = callback; - return ""; - }, - - unmemoize: function (memoId, callbackParams) { - var callback = memos[memoId]; - if (callback === undefined) - throw new Error("Couldn't find any memo with ID " + memoId + ". Perhaps it's already been unmemoized."); - try { - callback.apply(null, callbackParams || []); - return true; - } - finally { delete memos[memoId]; } - }, - - unmemoizeDomNodeAndDescendants: function (domNode, extraCallbackParamsArray) { - var memos = []; - findMemoNodes(domNode, memos); - for (var i = 0, j = memos.length; i < j; i++) { - var node = memos[i].domNode; - var combinedParams = [node]; - if (extraCallbackParamsArray) - ko.utils.arrayPushAll(combinedParams, extraCallbackParamsArray); - ko.memoization.unmemoize(memos[i].memoId, combinedParams); - node.nodeValue = ""; // Neuter this node so we don't try to unmemoize it again - if (node.parentNode) - node.parentNode.removeChild(node); // If possible, erase it totally (not always possible - someone else might just hold a reference to it then call unmemoizeDomNodeAndDescendants again) - } - }, - - parseMemoText: function (memoText) { - var match = memoText.match(/^\[ko_memo\:(.*?)\]$/); - return match ? match[1] : null; - } - }; -})(); - -ko.exportSymbol('ko.memoization', ko.memoization); -ko.exportSymbol('ko.memoization.memoize', ko.memoization.memoize); -ko.exportSymbol('ko.memoization.unmemoize', ko.memoization.unmemoize); -ko.exportSymbol('ko.memoization.parseMemoText', ko.memoization.parseMemoText); -ko.exportSymbol('ko.memoization.unmemoizeDomNodeAndDescendants', ko.memoization.unmemoizeDomNodeAndDescendants); -ko.extenders = { - 'throttle': function(target, timeout) { - // Throttling means two things: - - // (1) For dependent observables, we throttle *evaluations* so that, no matter how fast its dependencies - // notify updates, the target doesn't re-evaluate (and hence doesn't notify) faster than a certain rate - target['throttleEvaluation'] = timeout; - - // (2) For writable targets (observables, or writable dependent observables), we throttle *writes* - // so the target cannot change value synchronously or faster than a certain rate - var writeTimeoutInstance = null; - return ko.dependentObservable({ - 'read': target, - 'write': function(value) { - clearTimeout(writeTimeoutInstance); - writeTimeoutInstance = setTimeout(function() { - target(value); - }, timeout); - } - }); - }, - - 'notify': function(target, notifyWhen) { - target["equalityComparer"] = notifyWhen == "always" - ? function() { return false } // Treat all values as not equal - : ko.observable["fn"]["equalityComparer"]; - return target; - } -}; - -function applyExtenders(requestedExtenders) { - var target = this; - if (requestedExtenders) { - for (var key in requestedExtenders) { - var extenderHandler = ko.extenders[key]; - if (typeof extenderHandler == 'function') { - target = extenderHandler(target, requestedExtenders[key]); - } - } - } - return target; -} - -ko.exportSymbol('ko.extenders', ko.extenders); -ko.subscription = function (callback, disposeCallback) { - this.callback = callback; - this.disposeCallback = disposeCallback; - ko.exportProperty(this, 'dispose', this.dispose); -}; -ko.subscription.prototype.dispose = function () { - this.isDisposed = true; - this.disposeCallback(); -}; - -ko.subscribable = function () { - this._subscriptions = {}; - - ko.utils.extend(this, ko.subscribable['fn']); - ko.exportProperty(this, 'subscribe', this.subscribe); - ko.exportProperty(this, 'extend', this.extend); - ko.exportProperty(this, 'getSubscriptionsCount', this.getSubscriptionsCount); -} - -var defaultEvent = "change"; - -ko.subscribable['fn'] = { - subscribe: function (callback, callbackTarget, event) { - event = event || defaultEvent; - var boundCallback = callbackTarget ? callback.bind(callbackTarget) : callback; - - var subscription = new ko.subscription(boundCallback, function () { - ko.utils.arrayRemoveItem(this._subscriptions[event], subscription); - }.bind(this)); - - if (!this._subscriptions[event]) - this._subscriptions[event] = []; - this._subscriptions[event].push(subscription); - return subscription; - }, - - "notifySubscribers": function (valueToNotify, event) { - event = event || defaultEvent; - if (this._subscriptions[event]) { - ko.utils.arrayForEach(this._subscriptions[event].slice(0), function (subscription) { - // In case a subscription was disposed during the arrayForEach cycle, check - // for isDisposed on each subscription before invoking its callback - if (subscription && (subscription.isDisposed !== true)) - subscription.callback(valueToNotify); - }); - } - }, - - getSubscriptionsCount: function () { - var total = 0; - for (var eventName in this._subscriptions) { - if (this._subscriptions.hasOwnProperty(eventName)) - total += this._subscriptions[eventName].length; - } - return total; - }, - - extend: applyExtenders -}; - - -ko.isSubscribable = function (instance) { - return typeof instance.subscribe == "function" && typeof instance["notifySubscribers"] == "function"; -}; - -ko.exportSymbol('ko.subscribable', ko.subscribable); -ko.exportSymbol('ko.isSubscribable', ko.isSubscribable); - -ko.dependencyDetection = (function () { - var _frames = []; - - return { - begin: function (callback) { - _frames.push({ callback: callback, distinctDependencies:[] }); - }, - - end: function () { - _frames.pop(); - }, - - registerDependency: function (subscribable) { - if (!ko.isSubscribable(subscribable)) - throw "Only subscribable things can act as dependencies"; - if (_frames.length > 0) { - var topFrame = _frames[_frames.length - 1]; - if (ko.utils.arrayIndexOf(topFrame.distinctDependencies, subscribable) >= 0) - return; - topFrame.distinctDependencies.push(subscribable); - topFrame.callback(subscribable); - } - } - }; -})();var primitiveTypes = { 'undefined':true, 'boolean':true, 'number':true, 'string':true }; - -ko.observable = function (initialValue) { - var _latestValue = initialValue; - - function observable() { - if (arguments.length > 0) { - // Write - - // Ignore writes if the value hasn't changed - if ((!observable['equalityComparer']) || !observable['equalityComparer'](_latestValue, arguments[0])) { - observable.valueWillMutate(); - _latestValue = arguments[0]; - observable.valueHasMutated(); - } - return this; // Permits chained assignments - } - else { - // Read - ko.dependencyDetection.registerDependency(observable); // The caller only needs to be notified of changes if they did a "read" operation - return _latestValue; - } - } - ko.subscribable.call(observable); - observable.valueHasMutated = function () { observable["notifySubscribers"](_latestValue); } - observable.valueWillMutate = function () { observable["notifySubscribers"](_latestValue, "beforeChange"); } - ko.utils.extend(observable, ko.observable['fn']); - - ko.exportProperty(observable, "valueHasMutated", observable.valueHasMutated); - ko.exportProperty(observable, "valueWillMutate", observable.valueWillMutate); - - return observable; -} - -ko.observable['fn'] = { - __ko_proto__: ko.observable, - - "equalityComparer": function valuesArePrimitiveAndEqual(a, b) { - var oldValueIsPrimitive = (a === null) || (typeof(a) in primitiveTypes); - return oldValueIsPrimitive ? (a === b) : false; - } -}; - -ko.isObservable = function (instance) { - if ((instance === null) || (instance === undefined) || (instance.__ko_proto__ === undefined)) return false; - if (instance.__ko_proto__ === ko.observable) return true; - return ko.isObservable(instance.__ko_proto__); // Walk the prototype chain -} -ko.isWriteableObservable = function (instance) { - // Observable - if ((typeof instance == "function") && instance.__ko_proto__ === ko.observable) - return true; - // Writeable dependent observable - if ((typeof instance == "function") && (instance.__ko_proto__ === ko.dependentObservable) && (instance.hasWriteFunction)) - return true; - // Anything else - return false; -} - - -ko.exportSymbol('ko.observable', ko.observable); -ko.exportSymbol('ko.isObservable', ko.isObservable); -ko.exportSymbol('ko.isWriteableObservable', ko.isWriteableObservable); -ko.observableArray = function (initialValues) { - if (arguments.length == 0) { - // Zero-parameter constructor initializes to empty array - initialValues = []; - } - if ((initialValues !== null) && (initialValues !== undefined) && !('length' in initialValues)) - throw new Error("The argument passed when initializing an observable array must be an array, or null, or undefined."); - - var result = new ko.observable(initialValues); - ko.utils.extend(result, ko.observableArray['fn']); - - ko.exportProperty(result, "remove", result.remove); - ko.exportProperty(result, "removeAll", result.removeAll); - ko.exportProperty(result, "destroy", result.destroy); - ko.exportProperty(result, "destroyAll", result.destroyAll); - ko.exportProperty(result, "indexOf", result.indexOf); - ko.exportProperty(result, "replace", result.replace); - - return result; -} - -ko.observableArray['fn'] = { - remove: function (valueOrPredicate) { - var underlyingArray = this(); - var removedValues = []; - var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; }; - for (var i = 0; i < underlyingArray.length; i++) { - var value = underlyingArray[i]; - if (predicate(value)) { - if (removedValues.length === 0) { - this.valueWillMutate(); - } - removedValues.push(value); - underlyingArray.splice(i, 1); - i--; - } - } - if (removedValues.length) { - this.valueHasMutated(); - } - return removedValues; - }, - - removeAll: function (arrayOfValues) { - // If you passed zero args, we remove everything - if (arrayOfValues === undefined) { - var underlyingArray = this(); - var allValues = underlyingArray.slice(0); - this.valueWillMutate(); - underlyingArray.splice(0, underlyingArray.length); - this.valueHasMutated(); - return allValues; - } - // If you passed an arg, we interpret it as an array of entries to remove - if (!arrayOfValues) - return []; - return this.remove(function (value) { - return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0; - }); - }, - - destroy: function (valueOrPredicate) { - var underlyingArray = this(); - var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; }; - this.valueWillMutate(); - for (var i = underlyingArray.length - 1; i >= 0; i--) { - var value = underlyingArray[i]; - if (predicate(value)) - underlyingArray[i]["_destroy"] = true; - } - this.valueHasMutated(); - }, - - destroyAll: function (arrayOfValues) { - // If you passed zero args, we destroy everything - if (arrayOfValues === undefined) - return this.destroy(function() { return true }); - - // If you passed an arg, we interpret it as an array of entries to destroy - if (!arrayOfValues) - return []; - return this.destroy(function (value) { - return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0; - }); - }, - - indexOf: function (item) { - var underlyingArray = this(); - return ko.utils.arrayIndexOf(underlyingArray, item); - }, - - replace: function(oldItem, newItem) { - var index = this.indexOf(oldItem); - if (index >= 0) { - this.valueWillMutate(); - this()[index] = newItem; - this.valueHasMutated(); - } - } -} - -// Populate ko.observableArray.fn with read/write functions from native arrays -ko.utils.arrayForEach(["pop", "push", "reverse", "shift", "sort", "splice", "unshift"], function (methodName) { - ko.observableArray['fn'][methodName] = function () { - var underlyingArray = this(); - this.valueWillMutate(); - var methodCallResult = underlyingArray[methodName].apply(underlyingArray, arguments); - this.valueHasMutated(); - return methodCallResult; - }; -}); - -// Populate ko.observableArray.fn with read-only functions from native arrays -ko.utils.arrayForEach(["slice"], function (methodName) { - ko.observableArray['fn'][methodName] = function () { - var underlyingArray = this(); - return underlyingArray[methodName].apply(underlyingArray, arguments); - }; -}); - -ko.exportSymbol('ko.observableArray', ko.observableArray); -function prepareOptions(evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) { - if (evaluatorFunctionOrOptions && typeof evaluatorFunctionOrOptions == "object") { - // Single-parameter syntax - everything is on this "options" param - options = evaluatorFunctionOrOptions; - } else { - // Multi-parameter syntax - construct the options according to the params passed - options = options || {}; - options["read"] = evaluatorFunctionOrOptions || options["read"]; - } - // By here, "options" is always non-null - - if (typeof options["read"] != "function") - throw "Pass a function that returns the value of the dependentObservable"; - - return options; -} - -ko.dependentObservable = function (evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) { - var _latestValue, - _hasBeenEvaluated = false, - options = prepareOptions(evaluatorFunctionOrOptions, evaluatorFunctionTarget, options); - - // Build "disposeWhenNodeIsRemoved" and "disposeWhenNodeIsRemovedCallback" option values - // (Note: "disposeWhenNodeIsRemoved" option both proactively disposes as soon as the node is removed using ko.removeNode(), - // plus adds a "disposeWhen" callback that, on each evaluation, disposes if the node was removed by some other means.) - var disposeWhenNodeIsRemoved = (typeof options["disposeWhenNodeIsRemoved"] == "object") ? options["disposeWhenNodeIsRemoved"] : null; - var disposeWhenNodeIsRemovedCallback = null; - if (disposeWhenNodeIsRemoved) { - disposeWhenNodeIsRemovedCallback = function() { dependentObservable.dispose() }; - ko.utils.domNodeDisposal.addDisposeCallback(disposeWhenNodeIsRemoved, disposeWhenNodeIsRemovedCallback); - var existingDisposeWhenFunction = options["disposeWhen"]; - options["disposeWhen"] = function () { - return (!ko.utils.domNodeIsAttachedToDocument(disposeWhenNodeIsRemoved)) - || ((typeof existingDisposeWhenFunction == "function") && existingDisposeWhenFunction()); - } - } - - var _subscriptionsToDependencies = []; - function disposeAllSubscriptionsToDependencies() { - ko.utils.arrayForEach(_subscriptionsToDependencies, function (subscription) { - subscription.dispose(); - }); - _subscriptionsToDependencies = []; - } - - var evaluationTimeoutInstance = null; - function evaluatePossiblyAsync() { - var throttleEvaluationTimeout = dependentObservable['throttleEvaluation']; - if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) { - clearTimeout(evaluationTimeoutInstance); - evaluationTimeoutInstance = setTimeout(evaluateImmediate, throttleEvaluationTimeout); - } else - evaluateImmediate(); - } - - function evaluateImmediate() { - // Don't dispose on first evaluation, because the "disposeWhen" callback might - // e.g., dispose when the associated DOM element isn't in the doc, and it's not - // going to be in the doc until *after* the first evaluation - if ((_hasBeenEvaluated) && typeof options["disposeWhen"] == "function") { - if (options["disposeWhen"]()) { - dependentObservable.dispose(); - return; - } - } - - try { - disposeAllSubscriptionsToDependencies(); - ko.dependencyDetection.begin(function(subscribable) { - _subscriptionsToDependencies.push(subscribable.subscribe(evaluatePossiblyAsync)); - }); - var valueForThis = options["owner"] || evaluatorFunctionTarget; // If undefined, it will default to "window" by convention. This might change in the future. - var newValue = options["read"].call(valueForThis); - dependentObservable["notifySubscribers"](_latestValue, "beforeChange"); - _latestValue = newValue; - } finally { - ko.dependencyDetection.end(); - } - - dependentObservable["notifySubscribers"](_latestValue); - _hasBeenEvaluated = true; - } - - function dependentObservable() { - if (arguments.length > 0) { - if (typeof options["write"] === "function") { - // Writing a value - var valueForThis = options["owner"] || evaluatorFunctionTarget; // If undefined, it will default to "window" by convention. This might change in the future. - options["write"].apply(valueForThis, arguments); - } else { - throw "Cannot write a value to a dependentObservable unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters."; - } - } else { - // Reading the value - if (!_hasBeenEvaluated) - evaluateImmediate(); - ko.dependencyDetection.registerDependency(dependentObservable); - return _latestValue; - } - } - dependentObservable.getDependenciesCount = function () { return _subscriptionsToDependencies.length; } - dependentObservable.hasWriteFunction = typeof options["write"] === "function"; - dependentObservable.dispose = function () { - if (disposeWhenNodeIsRemoved) - ko.utils.domNodeDisposal.removeDisposeCallback(disposeWhenNodeIsRemoved, disposeWhenNodeIsRemovedCallback); - disposeAllSubscriptionsToDependencies(); - }; - - ko.subscribable.call(dependentObservable); - ko.utils.extend(dependentObservable, ko.dependentObservable['fn']); - - if (options['deferEvaluation'] !== true) - evaluateImmediate(); - - ko.exportProperty(dependentObservable, 'dispose', dependentObservable.dispose); - ko.exportProperty(dependentObservable, 'getDependenciesCount', dependentObservable.getDependenciesCount); - - return dependentObservable; -}; - -ko.dependentObservable['fn'] = { - __ko_proto__: ko.dependentObservable -}; - -ko.dependentObservable.__ko_proto__ = ko.observable; - -ko.exportSymbol('ko.dependentObservable', ko.dependentObservable); -ko.exportSymbol('ko.computed', ko.dependentObservable); // Make "ko.computed" an alias for "ko.dependentObservable" -(function() { - var maxNestedObservableDepth = 10; // Escape the (unlikely) pathalogical case where an observable's current value is itself (or similar reference cycle) - - ko.toJS = function(rootObject) { - if (arguments.length == 0) - throw new Error("When calling ko.toJS, pass the object you want to convert."); - - // We just unwrap everything at every level in the object graph - return mapJsObjectGraph(rootObject, function(valueToMap) { - // Loop because an observable's value might in turn be another observable wrapper - for (var i = 0; ko.isObservable(valueToMap) && (i < maxNestedObservableDepth); i++) - valueToMap = valueToMap(); - return valueToMap; - }); - }; - - ko.toJSON = function(rootObject) { - var plainJavaScriptObject = ko.toJS(rootObject); - return ko.utils.stringifyJson(plainJavaScriptObject); - }; - - function mapJsObjectGraph(rootObject, mapInputCallback, visitedObjects) { - visitedObjects = visitedObjects || new objectLookup(); - - rootObject = mapInputCallback(rootObject); - var canHaveProperties = (typeof rootObject == "object") && (rootObject !== null) && (rootObject !== undefined) && (!(rootObject instanceof Date)); - if (!canHaveProperties) - return rootObject; - - var outputProperties = rootObject instanceof Array ? [] : {}; - visitedObjects.save(rootObject, outputProperties); - - visitPropertiesOrArrayEntries(rootObject, function(indexer) { - var propertyValue = mapInputCallback(rootObject[indexer]); - - switch (typeof propertyValue) { - case "boolean": - case "number": - case "string": - case "function": - outputProperties[indexer] = propertyValue; - break; - case "object": - case "undefined": - var previouslyMappedValue = visitedObjects.get(propertyValue); - outputProperties[indexer] = (previouslyMappedValue !== undefined) - ? previouslyMappedValue - : mapJsObjectGraph(propertyValue, mapInputCallback, visitedObjects); - break; - } - }); - - return outputProperties; - } - - function visitPropertiesOrArrayEntries(rootObject, visitorCallback) { - if (rootObject instanceof Array) { - for (var i = 0; i < rootObject.length; i++) - visitorCallback(i); - } else { - for (var propertyName in rootObject) - visitorCallback(propertyName); - } - }; - - function objectLookup() { - var keys = []; - var values = []; - this.save = function(key, value) { - var existingIndex = ko.utils.arrayIndexOf(keys, key); - if (existingIndex >= 0) - values[existingIndex] = value; - else { - keys.push(key); - values.push(value); - } - }; - this.get = function(key) { - var existingIndex = ko.utils.arrayIndexOf(keys, key); - return (existingIndex >= 0) ? values[existingIndex] : undefined; - }; - }; -})(); - -ko.exportSymbol('ko.toJS', ko.toJS); -ko.exportSymbol('ko.toJSON', ko.toJSON);(function () { - var hasDomDataExpandoProperty = '__ko__hasDomDataOptionValue__'; - - // Normally, SELECT elements and their OPTIONs can only take value of type 'string' (because the values - // are stored on DOM attributes). ko.selectExtensions provides a way for SELECTs/OPTIONs to have values - // that are arbitrary objects. This is very convenient when implementing things like cascading dropdowns. - ko.selectExtensions = { - readValue : function(element) { - if (element.tagName == 'OPTION') { - if (element[hasDomDataExpandoProperty] === true) - return ko.utils.domData.get(element, ko.bindingHandlers.options.optionValueDomDataKey); - return element.getAttribute("value"); - } else if (element.tagName == 'SELECT') - return element.selectedIndex >= 0 ? ko.selectExtensions.readValue(element.options[element.selectedIndex]) : undefined; - else - return element.value; - }, - - writeValue: function(element, value) { - if (element.tagName == 'OPTION') { - switch(typeof value) { - case "string": - ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, undefined); - if (hasDomDataExpandoProperty in element) { // IE <= 8 throws errors if you delete non-existent properties from a DOM node - delete element[hasDomDataExpandoProperty]; - } - element.value = value; - break; - default: - // Store arbitrary object using DomData - ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, value); - element[hasDomDataExpandoProperty] = true; - - // Special treatment of numbers is just for backward compatibility. KO 1.2.1 wrote numerical values to element.value. - element.value = typeof value === "number" ? value : ""; - break; - } - } else if (element.tagName == 'SELECT') { - for (var i = element.options.length - 1; i >= 0; i--) { - if (ko.selectExtensions.readValue(element.options[i]) == value) { - element.selectedIndex = i; - break; - } - } - } else { - if ((value === null) || (value === undefined)) - value = ""; - element.value = value; - } - } - }; -})(); - -ko.exportSymbol('ko.selectExtensions', ko.selectExtensions); -ko.exportSymbol('ko.selectExtensions.readValue', ko.selectExtensions.readValue); -ko.exportSymbol('ko.selectExtensions.writeValue', ko.selectExtensions.writeValue); - -ko.jsonExpressionRewriting = (function () { - var restoreCapturedTokensRegex = /\@ko_token_(\d+)\@/g; - var javaScriptAssignmentTarget = /^[\_$a-z][\_$a-z0-9]*(\[.*?\])*(\.[\_$a-z][\_$a-z0-9]*(\[.*?\])*)*$/i; - var javaScriptReservedWords = ["true", "false"]; - - function restoreTokens(string, tokens) { - var prevValue = null; - while (string != prevValue) { // Keep restoring tokens until it no longer makes a difference (they may be nested) - prevValue = string; - string = string.replace(restoreCapturedTokensRegex, function (match, tokenIndex) { - return tokens[tokenIndex]; - }); - } - return string; - } - - function isWriteableValue(expression) { - if (ko.utils.arrayIndexOf(javaScriptReservedWords, ko.utils.stringTrim(expression).toLowerCase()) >= 0) - return false; - return expression.match(javaScriptAssignmentTarget) !== null; - } - - function ensureQuoted(key) { - var trimmedKey = ko.utils.stringTrim(key); - switch (trimmedKey.length && trimmedKey.charAt(0)) { - case "'": - case '"': - return key; - default: - return "'" + trimmedKey + "'"; - } - } - - return { - bindingRewriteValidators: [], - - parseObjectLiteral: function(objectLiteralString) { - // A full tokeniser+lexer would add too much weight to this library, so here's a simple parser - // that is sufficient just to split an object literal string into a set of top-level key-value pairs - - var str = ko.utils.stringTrim(objectLiteralString); - if (str.length < 3) - return []; - if (str.charAt(0) === "{")// Ignore any braces surrounding the whole object literal - str = str.substring(1, str.length - 1); - - // Pull out any string literals and regex literals - var tokens = []; - var tokenStart = null, tokenEndChar; - for (var position = 0; position < str.length; position++) { - var c = str.charAt(position); - if (tokenStart === null) { - switch (c) { - case '"': - case "'": - case "/": - tokenStart = position; - tokenEndChar = c; - break; - } - } else if ((c == tokenEndChar) && (str.charAt(position - 1) !== "\\")) { - var token = str.substring(tokenStart, position + 1); - tokens.push(token); - var replacement = "@ko_token_" + (tokens.length - 1) + "@"; - str = str.substring(0, tokenStart) + replacement + str.substring(position + 1); - position -= (token.length - replacement.length); - tokenStart = null; - } - } - - // Next pull out balanced paren, brace, and bracket blocks - tokenStart = null; - tokenEndChar = null; - var tokenDepth = 0, tokenStartChar = null; - for (var position = 0; position < str.length; position++) { - var c = str.charAt(position); - if (tokenStart === null) { - switch (c) { - case "{": tokenStart = position; tokenStartChar = c; - tokenEndChar = "}"; - break; - case "(": tokenStart = position; tokenStartChar = c; - tokenEndChar = ")"; - break; - case "[": tokenStart = position; tokenStartChar = c; - tokenEndChar = "]"; - break; - } - } - - if (c === tokenStartChar) - tokenDepth++; - else if (c === tokenEndChar) { - tokenDepth--; - if (tokenDepth === 0) { - var token = str.substring(tokenStart, position + 1); - tokens.push(token); - var replacement = "@ko_token_" + (tokens.length - 1) + "@"; - str = str.substring(0, tokenStart) + replacement + str.substring(position + 1); - position -= (token.length - replacement.length); - tokenStart = null; - } - } - } - - // Now we can safely split on commas to get the key/value pairs - var result = []; - var keyValuePairs = str.split(","); - for (var i = 0, j = keyValuePairs.length; i < j; i++) { - var pair = keyValuePairs[i]; - var colonPos = pair.indexOf(":"); - if ((colonPos > 0) && (colonPos < pair.length - 1)) { - var key = pair.substring(0, colonPos); - var value = pair.substring(colonPos + 1); - result.push({ 'key': restoreTokens(key, tokens), 'value': restoreTokens(value, tokens) }); - } else { - result.push({ 'unknown': restoreTokens(pair, tokens) }); - } - } - return result; - }, - - insertPropertyAccessorsIntoJson: function (objectLiteralStringOrKeyValueArray) { - var keyValueArray = typeof objectLiteralStringOrKeyValueArray === "string" - ? ko.jsonExpressionRewriting.parseObjectLiteral(objectLiteralStringOrKeyValueArray) - : objectLiteralStringOrKeyValueArray; - var resultStrings = [], propertyAccessorResultStrings = []; - - var keyValueEntry; - for (var i = 0; keyValueEntry = keyValueArray[i]; i++) { - if (resultStrings.length > 0) - resultStrings.push(","); - - if (keyValueEntry['key']) { - var quotedKey = ensureQuoted(keyValueEntry['key']), val = keyValueEntry['value']; - resultStrings.push(quotedKey); - resultStrings.push(":"); - resultStrings.push(val); - - if (isWriteableValue(ko.utils.stringTrim(val))) { - if (propertyAccessorResultStrings.length > 0) - propertyAccessorResultStrings.push(", "); - propertyAccessorResultStrings.push(quotedKey + " : function(__ko_value) { " + val + " = __ko_value; }"); - } - } else if (keyValueEntry['unknown']) { - resultStrings.push(keyValueEntry['unknown']); - } - } - - var combinedResult = resultStrings.join(""); - if (propertyAccessorResultStrings.length > 0) { - var allPropertyAccessors = propertyAccessorResultStrings.join(""); - combinedResult = combinedResult + ", '_ko_property_writers' : { " + allPropertyAccessors + " } "; - } - - return combinedResult; - }, - - keyValueArrayContainsKey: function(keyValueArray, key) { - for (var i = 0; i < keyValueArray.length; i++) - if (ko.utils.stringTrim(keyValueArray[i]['key']) == key) - return true; - return false; - } - }; -})(); - -ko.exportSymbol('ko.jsonExpressionRewriting', ko.jsonExpressionRewriting); -ko.exportSymbol('ko.jsonExpressionRewriting.bindingRewriteValidators', ko.jsonExpressionRewriting.bindingRewriteValidators); -ko.exportSymbol('ko.jsonExpressionRewriting.parseObjectLiteral', ko.jsonExpressionRewriting.parseObjectLiteral); -ko.exportSymbol('ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson', ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson); -(function() { - // "Virtual elements" is an abstraction on top of the usual DOM API which understands the notion that comment nodes - // may be used to represent hierarchy (in addition to the DOM's natural hierarchy). - // If you call the DOM-manipulating functions on ko.virtualElements, you will be able to read and write the state - // of that virtual hierarchy - // - // The point of all this is to support containerless templates (e.g., blah) - // without having to scatter special cases all over the binding and templating code. - - // IE 9 cannot reliably read the "nodeValue" property of a comment node (see https://github.com/SteveSanderson/knockout/issues/186) - // but it does give them a nonstandard alternative property called "text" that it can read reliably. Other browsers don't have that property. - // So, use node.text where available, and node.nodeValue elsewhere - var commentNodesHaveTextProperty = document.createComment("test").text === ""; - - var startCommentRegex = commentNodesHaveTextProperty ? /^$/ : /^\s*ko\s+(.*\:.*)\s*$/; - var endCommentRegex = commentNodesHaveTextProperty ? /^$/ : /^\s*\/ko\s*$/; - var htmlTagsWithOptionallyClosingChildren = { 'ul': true, 'ol': true }; - - function isStartComment(node) { - return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(startCommentRegex); - } - - function isEndComment(node) { - return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(endCommentRegex); - } - - function getVirtualChildren(startComment, allowUnbalanced) { - var currentNode = startComment; - var depth = 1; - var children = []; - while (currentNode = currentNode.nextSibling) { - if (isEndComment(currentNode)) { - depth--; - if (depth === 0) - return children; - } - - children.push(currentNode); - - if (isStartComment(currentNode)) - depth++; - } - if (!allowUnbalanced) - throw new Error("Cannot find closing comment tag to match: " + startComment.nodeValue); - return null; - } - - function getMatchingEndComment(startComment, allowUnbalanced) { - var allVirtualChildren = getVirtualChildren(startComment, allowUnbalanced); - if (allVirtualChildren) { - if (allVirtualChildren.length > 0) - return allVirtualChildren[allVirtualChildren.length - 1].nextSibling; - return startComment.nextSibling; - } else - return null; // Must have no matching end comment, and allowUnbalanced is true - } - - function nodeArrayToText(nodeArray, cleanNodes) { - var texts = []; - for (var i = 0, j = nodeArray.length; i < j; i++) { - if (cleanNodes) - ko.utils.domNodeDisposal.cleanNode(nodeArray[i]); - texts.push(ko.utils.outerHTML(nodeArray[i])); - } - return String.prototype.concat.apply("", texts); - } - - function getUnbalancedChildTags(node) { - // e.g., from
OK
Another, returns: Another - // from
OK
, returns: - var childNode = node.firstChild, captureRemaining = null; - if (childNode) { - do { - if (captureRemaining) // We already hit an unbalanced node and are now just scooping up all subsequent nodes - captureRemaining.push(childNode); - else if (isStartComment(childNode)) { - var matchingEndComment = getMatchingEndComment(childNode, /* allowUnbalanced: */ true); - if (matchingEndComment) // It's a balanced tag, so skip immediately to the end of this virtual set - childNode = matchingEndComment; - else - captureRemaining = [childNode]; // It's unbalanced, so start capturing from this point - } else if (isEndComment(childNode)) { - captureRemaining = [childNode]; // It's unbalanced (if it wasn't, we'd have skipped over it already), so start capturing - } - } while (childNode = childNode.nextSibling); - } - return captureRemaining; - } - - ko.virtualElements = { - allowedBindings: {}, - - childNodes: function(node) { - return isStartComment(node) ? getVirtualChildren(node) : node.childNodes; - }, - - emptyNode: function(node) { - if (!isStartComment(node)) - ko.utils.emptyDomNode(node); - else { - var virtualChildren = ko.virtualElements.childNodes(node); - for (var i = 0, j = virtualChildren.length; i < j; i++) - ko.removeNode(virtualChildren[i]); - } - }, - - setDomNodeChildren: function(node, childNodes) { - if (!isStartComment(node)) - ko.utils.setDomNodeChildren(node, childNodes); - else { - ko.virtualElements.emptyNode(node); - var endCommentNode = node.nextSibling; // Must be the next sibling, as we just emptied the children - for (var i = 0, j = childNodes.length; i < j; i++) - endCommentNode.parentNode.insertBefore(childNodes[i], endCommentNode); - } - }, - - prepend: function(containerNode, nodeToPrepend) { - if (!isStartComment(containerNode)) { - if (containerNode.firstChild) - containerNode.insertBefore(nodeToPrepend, containerNode.firstChild); - else - containerNode.appendChild(nodeToPrepend); - } else { - // Start comments must always have a parent and at least one following sibling (the end comment) - containerNode.parentNode.insertBefore(nodeToPrepend, containerNode.nextSibling); - } - }, - - insertAfter: function(containerNode, nodeToInsert, insertAfterNode) { - if (!isStartComment(containerNode)) { - // Insert after insertion point - if (insertAfterNode.nextSibling) - containerNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling); - else - containerNode.appendChild(nodeToInsert); - } else { - // Children of start comments must always have a parent and at least one following sibling (the end comment) - containerNode.parentNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling); - } - }, - - nextSibling: function(node) { - if (!isStartComment(node)) { - if (node.nextSibling && isEndComment(node.nextSibling)) - return undefined; - return node.nextSibling; - } else { - return getMatchingEndComment(node).nextSibling; - } - }, - - virtualNodeBindingValue: function(node) { - var regexMatch = isStartComment(node); - return regexMatch ? regexMatch[1] : null; - }, - - extractAnonymousTemplateIfVirtualElement: function(node) { - if (ko.virtualElements.virtualNodeBindingValue(node)) { - // Empty out the virtual children, and associate "node" with an anonymous template matching its previous virtual children - var virtualChildren = ko.virtualElements.childNodes(node); - var anonymousTemplateText = nodeArrayToText(virtualChildren, true); - ko.virtualElements.emptyNode(node); - new ko.templateSources.anonymousTemplate(node).text(anonymousTemplateText); - } - }, - - normaliseVirtualElementDomStructure: function(elementVerified) { - // Workaround for https://github.com/SteveSanderson/knockout/issues/155 - // (IE <= 8 or IE 9 quirks mode parses your HTML weirdly, treating closing tags as if they don't exist, thereby moving comment nodes - // that are direct descendants of
    into the preceding
  • ) - if (!htmlTagsWithOptionallyClosingChildren[elementVerified.tagName.toLowerCase()]) - return; - - // Scan immediate children to see if they contain unbalanced comment tags. If they do, those comment tags - // must be intended to appear *after* that child, so move them there. - var childNode = elementVerified.firstChild; - if (childNode) { - do { - if (childNode.nodeType === 1) { - var unbalancedTags = getUnbalancedChildTags(childNode); - if (unbalancedTags) { - // Fix up the DOM by moving the unbalanced tags to where they most likely were intended to be placed - *after* the child - var nodeToInsertBefore = childNode.nextSibling; - for (var i = 0; i < unbalancedTags.length; i++) { - if (nodeToInsertBefore) - elementVerified.insertBefore(unbalancedTags[i], nodeToInsertBefore); - else - elementVerified.appendChild(unbalancedTags[i]); - } - } - } - } while (childNode = childNode.nextSibling); - } - } - }; -})(); -(function() { - var defaultBindingAttributeName = "data-bind"; - - ko.bindingProvider = function() { }; - - ko.utils.extend(ko.bindingProvider.prototype, { - 'nodeHasBindings': function(node) { - switch (node.nodeType) { - case 1: return node.getAttribute(defaultBindingAttributeName) != null; // Element - case 8: return ko.virtualElements.virtualNodeBindingValue(node) != null; // Comment node - default: return false; - } - }, - - 'getBindings': function(node, bindingContext) { - var bindingsString = this['getBindingsString'](node, bindingContext); - return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext) : null; - }, - - // The following function is only used internally by this default provider. - // It's not part of the interface definition for a general binding provider. - 'getBindingsString': function(node, bindingContext) { - switch (node.nodeType) { - case 1: return node.getAttribute(defaultBindingAttributeName); // Element - case 8: return ko.virtualElements.virtualNodeBindingValue(node); // Comment node - default: return null; - } - }, - - // The following function is only used internally by this default provider. - // It's not part of the interface definition for a general binding provider. - 'parseBindingsString': function(bindingsString, bindingContext) { - try { - var viewModel = bindingContext['$data']; - var rewrittenBindings = " { " + ko.jsonExpressionRewriting.insertPropertyAccessorsIntoJson(bindingsString) + " } "; - return ko.utils.evalWithinScope(rewrittenBindings, viewModel === null ? window : viewModel, bindingContext); - } catch (ex) { - throw new Error("Unable to parse bindings.\nMessage: " + ex + ";\nBindings value: " + bindingsString); - } - } - }); - - ko.bindingProvider['instance'] = new ko.bindingProvider(); -})(); - -ko.exportSymbol('ko.bindingProvider', ko.bindingProvider);(function () { - ko.bindingHandlers = {}; - - ko.bindingContext = function(dataItem, parentBindingContext) { - this['$data'] = dataItem; - if (parentBindingContext) { - this['$parent'] = parentBindingContext['$data']; - this['$parents'] = (parentBindingContext['$parents'] || []).slice(0); - this['$parents'].unshift(this['$parent']); - this['$root'] = parentBindingContext['$root']; - } else { - this['$parents'] = []; - this['$root'] = dataItem; - } - } - ko.bindingContext.prototype['createChildContext'] = function (dataItem) { - return new ko.bindingContext(dataItem, this); - }; - - function validateThatBindingIsAllowedForVirtualElements(bindingName) { - var validator = ko.virtualElements.allowedBindings[bindingName]; - if (!validator) - throw new Error("The binding '" + bindingName + "' cannot be used with virtual elements") - } - - function applyBindingsToDescendantsInternal (viewModel, elementVerified) { - var currentChild, nextInQueue = elementVerified.childNodes[0]; - while (currentChild = nextInQueue) { - // Keep a record of the next child *before* applying bindings, in case the binding removes the current child from its position - nextInQueue = ko.virtualElements.nextSibling(currentChild); - applyBindingsToNodeAndDescendantsInternal(viewModel, currentChild, false); - } - } - - function applyBindingsToNodeAndDescendantsInternal (viewModel, nodeVerified, isRootNodeForBindingContext) { - var shouldBindDescendants = true; - - // Perf optimisation: Apply bindings only if... - // (1) It's a root element for this binding context, as we will need to store the binding context on this node - // Note that we can't store binding contexts on non-elements (e.g., text nodes), as IE doesn't allow expando properties for those - // (2) It might have bindings (e.g., it has a data-bind attribute, or it's a marker for a containerless template) - var isElement = (nodeVerified.nodeType == 1); - if (isElement) // Workaround IE <= 8 HTML parsing weirdness - ko.virtualElements.normaliseVirtualElementDomStructure(nodeVerified); - - var shouldApplyBindings = (isElement && isRootNodeForBindingContext) // Case (1) - || ko.bindingProvider['instance']['nodeHasBindings'](nodeVerified); // Case (2) - if (shouldApplyBindings) - shouldBindDescendants = applyBindingsToNodeInternal(nodeVerified, null, viewModel, isRootNodeForBindingContext).shouldBindDescendants; - - if (isElement && shouldBindDescendants) - applyBindingsToDescendantsInternal(viewModel, nodeVerified); - } - - function applyBindingsToNodeInternal (node, bindings, viewModelOrBindingContext, isRootNodeForBindingContext) { - // Need to be sure that inits are only run once, and updates never run until all the inits have been run - var initPhase = 0; // 0 = before all inits, 1 = during inits, 2 = after all inits - - // Pre-process any anonymous template bounded by comment nodes - ko.virtualElements.extractAnonymousTemplateIfVirtualElement(node); - - // Each time the dependentObservable is evaluated (after data changes), - // the binding attribute is reparsed so that it can pick out the correct - // model properties in the context of the changed data. - // DOM event callbacks need to be able to access this changed data, - // so we need a single parsedBindings variable (shared by all callbacks - // associated with this node's bindings) that all the closures can access. - var parsedBindings; - function makeValueAccessor(bindingKey) { - return function () { return parsedBindings[bindingKey] } - } - function parsedBindingsAccessor() { - return parsedBindings; - } - - var bindingHandlerThatControlsDescendantBindings; - new ko.dependentObservable( - function () { - // Ensure we have a nonnull binding context to work with - var bindingContextInstance = viewModelOrBindingContext && (viewModelOrBindingContext instanceof ko.bindingContext) - ? viewModelOrBindingContext - : new ko.bindingContext(ko.utils.unwrapObservable(viewModelOrBindingContext)); - var viewModel = bindingContextInstance['$data']; - - // We only need to store the bindingContext at the root of the subtree where it applies - // as all descendants will be able to find it by scanning up their ancestry - if (isRootNodeForBindingContext) - ko.storedBindingContextForNode(node, bindingContextInstance); - - // Use evaluatedBindings if given, otherwise fall back on asking the bindings provider to give us some bindings - var evaluatedBindings = (typeof bindings == "function") ? bindings() : bindings; - parsedBindings = evaluatedBindings || ko.bindingProvider['instance']['getBindings'](node, bindingContextInstance); - - if (parsedBindings) { - // First run all the inits, so bindings can register for notification on changes - if (initPhase === 0) { - initPhase = 1; - for (var bindingKey in parsedBindings) { - var binding = ko.bindingHandlers[bindingKey]; - if (binding && node.nodeType === 8) - validateThatBindingIsAllowedForVirtualElements(bindingKey); - - if (binding && typeof binding["init"] == "function") { - var handlerInitFn = binding["init"]; - var initResult = handlerInitFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance); - - // If this binding handler claims to control descendant bindings, make a note of this - if (initResult && initResult['controlsDescendantBindings']) { - if (bindingHandlerThatControlsDescendantBindings !== undefined) - throw new Error("Multiple bindings (" + bindingHandlerThatControlsDescendantBindings + " and " + bindingKey + ") are trying to control descendant bindings of the same element. You cannot use these bindings together on the same element."); - bindingHandlerThatControlsDescendantBindings = bindingKey; - } - } - } - initPhase = 2; - } - - // ... then run all the updates, which might trigger changes even on the first evaluation - if (initPhase === 2) { - for (var bindingKey in parsedBindings) { - var binding = ko.bindingHandlers[bindingKey]; - if (binding && typeof binding["update"] == "function") { - var handlerUpdateFn = binding["update"]; - handlerUpdateFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance); - } - } - } - } - }, - null, - { 'disposeWhenNodeIsRemoved' : node } - ); - - return { - shouldBindDescendants: bindingHandlerThatControlsDescendantBindings === undefined - }; - }; - - var storedBindingContextDomDataKey = "__ko_bindingContext__"; - ko.storedBindingContextForNode = function (node, bindingContext) { - if (arguments.length == 2) - ko.utils.domData.set(node, storedBindingContextDomDataKey, bindingContext); - else - return ko.utils.domData.get(node, storedBindingContextDomDataKey); - } - - ko.applyBindingsToNode = function (node, bindings, viewModel) { - if (node.nodeType === 1) // If it's an element, workaround IE <= 8 HTML parsing weirdness - ko.virtualElements.normaliseVirtualElementDomStructure(node); - return applyBindingsToNodeInternal(node, bindings, viewModel, true); - }; - - ko.applyBindingsToDescendants = function(viewModel, rootNode) { - if (rootNode.nodeType === 1) - applyBindingsToDescendantsInternal(viewModel, rootNode); - }; - - ko.applyBindings = function (viewModel, rootNode) { - if (rootNode && (rootNode.nodeType !== 1) && (rootNode.nodeType !== 8)) - throw new Error("ko.applyBindings: first parameter should be your view model; second parameter should be a DOM node"); - rootNode = rootNode || window.document.body; // Make "rootNode" parameter optional - - applyBindingsToNodeAndDescendantsInternal(viewModel, rootNode, true); - }; - - // Retrieving binding context from arbitrary nodes - ko.contextFor = function(node) { - // We can only do something meaningful for elements and comment nodes (in particular, not text nodes, as IE can't store domdata for them) - switch (node.nodeType) { - case 1: - case 8: - var context = ko.storedBindingContextForNode(node); - if (context) return context; - if (node.parentNode) return ko.contextFor(node.parentNode); - break; - } - return undefined; - }; - ko.dataFor = function(node) { - var context = ko.contextFor(node); - return context ? context['$data'] : undefined; - }; - - ko.exportSymbol('ko.bindingHandlers', ko.bindingHandlers); - ko.exportSymbol('ko.applyBindings', ko.applyBindings); - ko.exportSymbol('ko.applyBindingsToDescendants', ko.applyBindingsToDescendants); - ko.exportSymbol('ko.applyBindingsToNode', ko.applyBindingsToNode); - ko.exportSymbol('ko.contextFor', ko.contextFor); - ko.exportSymbol('ko.dataFor', ko.dataFor); -})();// For certain common events (currently just 'click'), allow a simplified data-binding syntax -// e.g. click:handler instead of the usual full-length event:{click:handler} -var eventHandlersWithShortcuts = ['click']; -ko.utils.arrayForEach(eventHandlersWithShortcuts, function(eventName) { - ko.bindingHandlers[eventName] = { - 'init': function(element, valueAccessor, allBindingsAccessor, viewModel) { - var newValueAccessor = function () { - var result = {}; - result[eventName] = valueAccessor(); - return result; - }; - return ko.bindingHandlers['event']['init'].call(this, element, newValueAccessor, allBindingsAccessor, viewModel); - } - } -}); - - -ko.bindingHandlers['event'] = { - 'init' : function (element, valueAccessor, allBindingsAccessor, viewModel) { - var eventsToHandle = valueAccessor() || {}; - for(var eventNameOutsideClosure in eventsToHandle) { - (function() { - var eventName = eventNameOutsideClosure; // Separate variable to be captured by event handler closure - if (typeof eventName == "string") { - ko.utils.registerEventHandler(element, eventName, function (event) { - var handlerReturnValue; - var handlerFunction = valueAccessor()[eventName]; - if (!handlerFunction) - return; - var allBindings = allBindingsAccessor(); - - try { - // Take all the event args, and prefix with the viewmodel - var argsForHandler = ko.utils.makeArray(arguments); - argsForHandler.unshift(viewModel); - handlerReturnValue = handlerFunction.apply(viewModel, argsForHandler); - } finally { - if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true. - if (event.preventDefault) - event.preventDefault(); - else - event.returnValue = false; - } - } - - var bubble = allBindings[eventName + 'Bubble'] !== false; - if (!bubble) { - event.cancelBubble = true; - if (event.stopPropagation) - event.stopPropagation(); - } - }); - } - })(); - } - } -}; - -ko.bindingHandlers['submit'] = { - 'init': function (element, valueAccessor, allBindingsAccessor, viewModel) { - if (typeof valueAccessor() != "function") - throw new Error("The value for a submit binding must be a function"); - ko.utils.registerEventHandler(element, "submit", function (event) { - var handlerReturnValue; - var value = valueAccessor(); - try { handlerReturnValue = value.call(viewModel, element); } - finally { - if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true. - if (event.preventDefault) - event.preventDefault(); - else - event.returnValue = false; - } - } - }); - } -}; - -ko.bindingHandlers['visible'] = { - 'update': function (element, valueAccessor) { - var value = ko.utils.unwrapObservable(valueAccessor()); - var isCurrentlyVisible = !(element.style.display == "none"); - if (value && !isCurrentlyVisible) - element.style.display = ""; - else if ((!value) && isCurrentlyVisible) - element.style.display = "none"; - } -} - -ko.bindingHandlers['enable'] = { - 'update': function (element, valueAccessor) { - var value = ko.utils.unwrapObservable(valueAccessor()); - if (value && element.disabled) - element.removeAttribute("disabled"); - else if ((!value) && (!element.disabled)) - element.disabled = true; - } -}; - -ko.bindingHandlers['disable'] = { - 'update': function (element, valueAccessor) { - ko.bindingHandlers['enable']['update'](element, function() { return !ko.utils.unwrapObservable(valueAccessor()) }); - } -}; - -function ensureDropdownSelectionIsConsistentWithModelValue(element, modelValue, preferModelValue) { - if (preferModelValue) { - if (modelValue !== ko.selectExtensions.readValue(element)) - ko.selectExtensions.writeValue(element, modelValue); - } - - // No matter which direction we're syncing in, we want the end result to be equality between dropdown value and model value. - // If they aren't equal, either we prefer the dropdown value, or the model value couldn't be represented, so either way, - // change the model value to match the dropdown. - if (modelValue !== ko.selectExtensions.readValue(element)) - ko.utils.triggerEvent(element, "change"); -}; - -ko.bindingHandlers['value'] = { - 'init': function (element, valueAccessor, allBindingsAccessor) { - // Always catch "change" event; possibly other events too if asked - var eventsToCatch = ["change"]; - var requestedEventsToCatch = allBindingsAccessor()["valueUpdate"]; - if (requestedEventsToCatch) { - if (typeof requestedEventsToCatch == "string") // Allow both individual event names, and arrays of event names - requestedEventsToCatch = [requestedEventsToCatch]; - ko.utils.arrayPushAll(eventsToCatch, requestedEventsToCatch); - eventsToCatch = ko.utils.arrayGetDistinctValues(eventsToCatch); - } - - ko.utils.arrayForEach(eventsToCatch, function(eventName) { - // The syntax "after" means "run the handler asynchronously after the event" - // This is useful, for example, to catch "keydown" events after the browser has updated the control - // (otherwise, ko.selectExtensions.readValue(this) will receive the control's value *before* the key event) - var handleEventAsynchronously = false; - if (ko.utils.stringStartsWith(eventName, "after")) { - handleEventAsynchronously = true; - eventName = eventName.substring("after".length); - } - var runEventHandler = handleEventAsynchronously ? function(handler) { setTimeout(handler, 0) } - : function(handler) { handler() }; - - ko.utils.registerEventHandler(element, eventName, function () { - runEventHandler(function() { - var modelValue = valueAccessor(); - var elementValue = ko.selectExtensions.readValue(element); - if (ko.isWriteableObservable(modelValue)) - modelValue(elementValue); - else { - var allBindings = allBindingsAccessor(); - if (allBindings['_ko_property_writers'] && allBindings['_ko_property_writers']['value']) - allBindings['_ko_property_writers']['value'](elementValue); - } - }); - }); - }); - }, - 'update': function (element, valueAccessor) { - var newValue = ko.utils.unwrapObservable(valueAccessor()); - var elementValue = ko.selectExtensions.readValue(element); - var valueHasChanged = (newValue != elementValue); - - // JavaScript's 0 == "" behavious is unfortunate here as it prevents writing 0 to an empty text box (loose equality suggests the values are the same). - // We don't want to do a strict equality comparison as that is more confusing for developers in certain cases, so we specifically special case 0 != "" here. - if ((newValue === 0) && (elementValue !== 0) && (elementValue !== "0")) - valueHasChanged = true; - - if (valueHasChanged) { - var applyValueAction = function () { ko.selectExtensions.writeValue(element, newValue); }; - applyValueAction(); - - // Workaround for IE6 bug: It won't reliably apply values to SELECT nodes during the same execution thread - // right after you've changed the set of OPTION nodes on it. So for that node type, we'll schedule a second thread - // to apply the value as well. - var alsoApplyAsynchronously = element.tagName == "SELECT"; - if (alsoApplyAsynchronously) - setTimeout(applyValueAction, 0); - } - - // If you try to set a model value that can't be represented in an already-populated dropdown, reject that change, - // because you're not allowed to have a model value that disagrees with a visible UI selection. - if ((element.tagName == "SELECT") && (element.length > 0)) - ensureDropdownSelectionIsConsistentWithModelValue(element, newValue, /* preferModelValue */ false); - } -}; - -ko.bindingHandlers['options'] = { - 'update': function (element, valueAccessor, allBindingsAccessor) { - if (element.tagName != "SELECT") - throw new Error("options binding applies only to SELECT elements"); - - var selectWasPreviouslyEmpty = element.length == 0; - var previousSelectedValues = ko.utils.arrayMap(ko.utils.arrayFilter(element.childNodes, function (node) { - return node.tagName && node.tagName == "OPTION" && node.selected; - }), function (node) { - return ko.selectExtensions.readValue(node) || node.innerText || node.textContent; - }); - var previousScrollTop = element.scrollTop; - element.scrollTop = 0; // Workaround for a Chrome rendering bug. Note that we restore the scroll position later. (https://github.com/SteveSanderson/knockout/issues/215) - - var value = ko.utils.unwrapObservable(valueAccessor()); - var selectedValue = element.value; - - // Remove all existing