Lines Matching full:childlist
1 if (descriptor.writable || descriptor.set) {\n if (isEvent)\n setter = scope.getEventHandlerSetter(name);\n else\n setter = getSetter(name);\n }\n\n defineProperty(target, name, {\n get: getter,\n set: setter,\n configurable: descriptor.configurable,\n enumerable: descriptor.enumerable\n });\n }\n }\n\n /**\n * @param {Function} nativeConstructor\n * @param {Function} wrapperConstructor\n * @param {Object=} opt_instance If present, this is used to extract\n * properties from an instance object.\n */\n function register(nativeConstructor, wrapperConstructor, opt_instance) {\n var nativePrototype = nativeConstructor.prototype;\n registerInternal(nativePrototype, wrapperConstructor, opt_instance);\n mixinStatics(wrapperConstructor, nativeConstructor);\n }\n\n function registerInternal(nativePrototype, wrapperConstructor, opt_instance) {\n var wrapperPrototype = wrapperConstructor.prototype;\n assert(constructorTable.get(nativePrototype) === undefined);\n\n constructorTable.set(nativePrototype, wrapperConstructor);\n nativePrototypeTable.set(wrapperPrototype, nativePrototype);\n\n addForwardingProperties(nativePrototype, wrapperPrototype);\n if (opt_instance)\n registerInstanceProperties(wrapperPrototype, opt_instance);\n\n defineNonEnumerableDataProperty(\n wrapperPrototype, 'constructor', wrapperConstructor);\n // Set it again. Some VMs optimizes objects that are used as prototypes.\n wrapperConstructor.prototype = wrapperPrototype;\n }\n\n function isWrapperFor(wrapperConstructor, nativeConstructor) {\n return constructorTable.get(nativeConstructor.prototype) ===\n wrapperConstructor;\n }\n\n /**\n * Creates a generic wrapper constructor based on |object| and its\n * constructor.\n * @param {Node} object\n * @return {Function} The generated constructor.\n */\n function registerObject(object) {\n var nativePrototype = Object.getPrototypeOf(object);\n\n var superWrapperConstructor = getWrapperConstructor(nativePrototype);\n var GeneratedWrapper = createWrapperConstructor(superWrapperConstructor);\n registerInternal(nativePrototype, GeneratedWrapper, object);\n\n return GeneratedWrapper;\n }\n\n function createWrapperConstructor(superWrapperConstructor) {\n function GeneratedWrapper(node) {\n superWrapperConstructor.call(this, node);\n }\n var p = Object.create(superWrapperConstructor.prototype);\n p.constructor = GeneratedWrapper;\n GeneratedWrapper.prototype = p;\n\n return GeneratedWrapper;\n }\n\n var OriginalDOMImplementation = window.DOMImplementation;\n var OriginalEventTarget = window.EventTarget;\n var OriginalEvent = window.Event;\n var OriginalNode = window.Node;\n var OriginalWindow = window.Window;\n var OriginalRange = window.Range;\n var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;\n var OriginalWebGLRenderingContext = window.WebGLRenderingContext;\n var OriginalSVGElementInstance = window.SVGElementInstance;\n var OriginalFormData = window.FormData;\n \n function isWrapper(object) {\n return object instanceof wrappers.EventTarget ||\n object instanceof wrappers.Event ||\n object instanceof wrappers.Range ||\n object instanceof wrappers.DOMImplementation ||\n object instanceof wrappers.CanvasRenderingContext2D ||\n object instanceof wrappers.FormData ||\n wrappers.WebGLRenderingContext &&\n object instanceof wrappers.WebGLRenderingContext;\n }\n\n function isNative(object) {\n return OriginalEventTarget && object instanceof OriginalEventTarget ||\n object instanceof OriginalNode ||\n object instanceof OriginalEvent ||\n object instanceof OriginalWindow ||\n object instanceof OriginalRange ||\n object instanceof OriginalDOMImplementation ||\n object instanceof OriginalCanvasRenderingContext2D ||\n object instanceof OriginalFormData ||\n OriginalWebGLRenderingContext &&\n object instanceof OriginalWebGLRenderingContext ||\n OriginalSVGElementInstance &&\n object instanceof OriginalSVGElementInstance;\n }\n\n /**\n * Wraps a node in a WrapperNode. If there already exists a wrapper for the\n * |node| that wrapper is returned instead.\n * @param {Node} node\n * @return {WrapperNode}\n */\n function wrap(impl) {\n if (impl === null)\n return null;\n\n assert(isNative(impl));\n return impl.polymerWrapper_ ||\n (impl.polymerWrapper_ = new (getWrapperConstructor(impl))(impl));\n }\n\n /**\n * Unwraps a wrapper and returns the node it is wrapping.\n * @param {WrapperNode} wrapper\n * @return {Node}\n */\n function unwrap(wrapper) {\n if (wrapper === null)\n return null;\n assert(isWrapper(wrapper));\n return wrapper.impl;\n }\n\n /**\n * Unwraps object if it is a wrapper.\n * @param {Object} object\n * @return {Object} The native implementation object.\n */\n function unwrapIfNeeded(object) {\n return object && isWrapper(object) ? unwrap(object) : object;\n }\n\n /**\n * Wraps object if it is not a wrapper.\n * @param {Object} object\n * @return {Object} The wrapper for object.\n */\n function wrapIfNeeded(object) {\n return object && !isWrapper(object) ? wrap(object) : object;\n }\n\n /**\n * Overrides the current wrapper (if any) for node.\n * @param {Node} node\n * @param {WrapperNode=} wrapper If left out the wrapper will be created as\n * needed next time someone wraps the node.\n */\n function rewrap(node, wrapper) {\n if (wrapper === null)\n return;\n assert(isNative(node));\n assert(wrapper === undefined || isWrapper(wrapper));\n node.polymerWrapper_ = wrapper;\n }\n\n var getterDescriptor = {\n get: undefined,\n configurable: true,\n enumerable: true\n };\n\n function defineGetter(constructor, name, getter) {\n getterDescriptor.get = getter;\n defineProperty(constructor.prototype, name, getterDescriptor);\n }\n\n function defineWrapGetter(constructor, name) {\n defineGetter(constructor, name, function() {\n return wrap(this.impl[name]);\n });\n }\n\n /**\n * Forwards existing methods on the native object to the wrapper methods.\n * This does not wrap any of the arguments or the return value since the\n * wrapper implementation already takes care of that.\n * @param {Array.<Function>} constructors\n * @parem {Array.<string>} names\n */\n function forwardMethodsToWrapper(constructors, names) {\n constructors.forEach(function(constructor) {\n names.forEach(function(name) {\n constructor.prototype[name] = function() {\n var w = wrapIfNeeded(this);\n return w[name].apply(w, arguments);\n };\n });\n });\n }\n\n scope.assert = assert;\n scope.constructorTable = constructorTable;\n scope.defineGetter = defineGetter;\n scope.defineWrapGetter = defineWrapGetter;\n scope.forwardMethodsToWrapper = forwardMethodsToWrapper;\n scope.isWrapper = isWrapper;\n scope.isWrapperFor = isWrapperFor;\n scope.mixin = mixin;\n scope.nativePrototypeTable = nativePrototypeTable;\n scope.oneOf = oneOf;\n scope.registerObject = registerObject;\n scope.registerWrapper = register;\n scope.rewrap = rewrap;\n scope.unwrap = unwrap;\n scope.unwrapIfNeeded = unwrapIfNeeded;\n scope.wrap = wrap;\n scope.wrapIfNeeded = wrapIfNeeded;\n scope.wrappers = wrappers;\n\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(context) {\n 'use strict';\n\n var OriginalMutationObserver = window.MutationObserver;\n var callbacks = [];\n var pending = false;\n var timerFunc;\n\n function handle() {\n pending = false;\n var copies = callbacks.slice(0);\n callbacks = [];\n for (var i = 0; i < copies.length; i++) {\n (0, copies[i])();\n }\n }\n\n if (OriginalMutationObserver) {\n var counter = 1;\n var observer = new OriginalMutationObserver(handle);\n var textNode = document.createTextNode(counter);\n observer.observe(textNode, {characterData: true});\n\n timerFunc = function() {\n counter = (counter + 1) % 2;\n textNode.data = counter;\n };\n\n } else {\n timerFunc = window.setImmediate || window.setTimeout;\n }\n\n function setEndOfMicrotask(func) {\n callbacks.push(func);\n if (pending)\n return;\n pending = true;\n timerFunc(handle, 0);\n }\n\n context.setEndOfMicrotask = setEndOfMicrotask;\n\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n 'use strict';\n\n var setEndOfMicrotask = scope.setEndOfMicrotask\n var wrapIfNeeded = scope.wrapIfNeeded\n var wrappers = scope.wrappers;\n\n var registrationsTable = new WeakMap();\n var globalMutationObservers = [];\n var isScheduled = false;\n\n function scheduleCallback(observer) {\n if (isScheduled)\n return;\n setEndOfMicrotask(notifyObservers);\n isScheduled = true;\n }\n\n // http://dom.spec.whatwg.org/#mutation-observers\n function notifyObservers() {\n isScheduled = false;\n\n do {\n var notifyList = globalMutationObservers.slice();\n var anyNonEmpty = false;\n for (var i = 0; i < notifyList.length; i++) {\n var mo = notifyList[i];\n var queue = mo.takeRecords();\n removeTransientObserversFor(mo);\n if (queue.length) {\n mo.callback_(queue, mo);\n anyNonEmpty = true;\n }\n }\n } while (anyNonEmpty);\n }\n\n /**\n * @param {string} type\n * @param {Node} target\n * @constructor\n */\n function MutationRecord(type, target) {\n this.type = type;\n this.target = target;\n this.addedNodes = new wrappers.NodeList();\n this.removedNodes = new wrappers.NodeList();\n this.previousSibling = null;\n this.nextSibling = null;\n this.attributeName = null;\n this.attributeNamespace = null;\n this.oldValue = null;\n }\n\n /**\n * Registers transient observers to ancestor and its ancesors for the node\n * which was removed.\n * @param {!Node} ancestor\n * @param {!Node} node\n */\n function registerTransientObservers(ancestor, node) {\n for (; ancestor; ancestor = ancestor.parentNode) {\n var registrations = registrationsTable.get(ancestor);\n if (!registrations)\n continue;\n for (var i = 0; i < registrations.length; i++) {\n var registration = registrations[i];\n if (registration.options.subtree)\n registration.addTransientObserver(node);\n }\n }\n }\n\n function removeTransientObserversFor(observer) {\n for (var i = 0; i < observer.nodes_.length; i++) {\n var node = observer.nodes_[i];\n var registrations = registrationsTable.get(node);\n if (!registrations)\n return;\n for (var j = 0; j < registrations.length; j++) {\n var registration = registrations[j];\n if (registration.observer === observer)\n registration.removeTransientObservers();\n }\n }\n }\n\n // http://dom.spec.whatwg.org/#queue-a-mutation-record\n function enqueueMutation(target, type, data) {\n // 1.\n var interestedObservers = Object.create(null);\n var associatedStrings = Object.create(null);\n\n // 2.\n for (var node = target; node; node = node.parentNode) {\n // 3.\n var registrations = registrationsTable.get(node);\n if (!registrations)\n continue;\n for (var j = 0; j < registrations.length; j++) {\n var registration = registrations[j];\n var options = registration.options;\n // 1.\n if (node !== target && !options.subtree)\n continue;\n\n // 2.\n if (type === 'attributes' && !options.attributes)\n continue;\n\n // 3. If type is \"attributes\", options's attributeFilter is present, and\n // either options's attributeFilter does not contain name or namespace\n // is non-null, continue.\n if (type === 'attributes' && options.attributeFilter &&\n (data.namespace !== null ||\n options.attributeFilter.indexOf(data.name) === -1)) {\n continue;\n }\n\n // 4.\n if (type === 'characterData' && !options.characterData)\n continue;\n\n // 5.\n if (type === 'childList' && !options.childList)\n continue;\n\n // 6.\n var observer = registration.observer;\n interestedObservers[observer.uid_] = observer;\n\n // 7. If either type is \"attributes\" and options's attributeOldValue is\n // true, or type is \"characterData\" and options's characterDataOldValue\n // is true, set the paired string of registered observer's observer in\n // interested observers to oldValue.\n if (type === 'attributes' && options.attributeOldValue ||\n type === 'characterData' && options.characterDataOldValue) {\n associatedStrings[observer.uid_] = data.oldValue;\n }\n }\n }\n\n var anyRecordsEnqueued = false;\n\n // 4.\n for (var uid in interestedObservers) {\n var observer = interestedObservers[uid];\n var record = new MutationRecord(type, target);\n\n // 2.\n if ('name' in data && 'namespace' in data) {\n record.attributeName = data.name;\n record.attributeNamespace = data.namespace;\n }\n\n // 3.\n if (data.addedNodes)\n record.addedNodes = data.addedNodes;\n\n // 4.\n if (data.removedNodes)\n record.removedNodes = data.removedNodes;\n\n // 5.\n if (data.previousSibling)\n record.previousSibling = data.previousSibling;\n\n // 6.\n if (data.nextSibling)\n record.nextSibling = data.nextSibling;\n\n // 7.\n if (associatedStrings[uid] !== undefined)\n record.oldValue = associatedStrings[uid];\n\n // 8.\n observer.records_.push(record);\n\n anyRecordsEnqueued = true;\n }\n\n if (anyRecordsEnqueued)\n scheduleCallback();\n }\n\n var slice = Array.prototype.slice;\n\n /**\n * @param {!Object} options\n * @constructor\n */\n function MutationObserverOptions(options) {\n this.childList = !!options.childListchildList', {\n removedNodes: nodes,\n previousSibling: node.previousSibling,\n nextSibling: node.nextSibling\n });\n }\n\n function enqueueRemovalForInsertedDocumentFragment(df, nodes) {\n enqueueMutation(df, 'childListchildList', {\n addedNodes: nodes,\n nextSibling: refWrapper,\n previousSibling: previousNode\n });\n\n nodesWereAdded(nodes, this);\n\n return childWrapper;\n },\n\n removeChild: function(childWrapper) {\n assertIsNodeWrapper(childWrapper);\n if (childWrapper.parentNode !== this) {\n // IE has invalid DOM trees at times.\n var found = false;\n var childNodes = this.childNodes;\n for (var ieChild = this.firstChild; ieChild;\n ieChild = ieChild.nextSibling) {\n if (ieChild === childWrapper) {\n found = true;\n break;\n }\n }\n if (!found) {\n // TODO(arv): DOMException\n throw new Error('NotFoundError');\n }\n }\n\n var childNode = unwrap(childWrapper);\n var childWrapperNextSibling = childWrapper.nextSibling;\n var childWrapperPreviousSibling = childWrapper.previousSibling;\n\n if (this.invalidateShadowRenderer()) {\n // We need to remove the real node from the DOM before updating the\n // pointers. This is so that that mutation event is dispatched before\n // the pointers have changed.\n var thisFirstChild = this.firstChild;\n var thisLastChild = this.lastChild;\n\n var parentNode = childNode.parentNode;\n if (parentNode)\n removeChildOriginalHelper(parentNode, childNode);\n\n if (thisFirstChild === childWrapper)\n this.firstChild_ = childWrapperNextSibling;\n if (thisLastChild === childWrapper)\n this.lastChild_ = childWrapperPreviousSibling;\n if (childWrapperPreviousSibling)\n childWrapperPreviousSibling.nextSibling_ = childWrapperNextSibling;\n if (childWrapperNextSibling) {\n childWrapperNextSibling.previousSibling_ =\n childWrapperPreviousSibling;\n }\n\n childWrapper.previousSibling_ = childWrapper.nextSibling_ =\n childWrapper.parentNode_ = undefined;\n } else {\n clearChildNodes(this);\n removeChildOriginalHelper(this.impl, childNode);\n }\n\n if (!surpressMutations) {\n enqueueMutation(this, 'childList', {\n removedNodes: createOneElementNodeList(childWrapper),\n nextSibling: childWrapperNextSibling,\n previousSibling: childWrapperPreviousSibling\n });\n }\n\n registerTransientObservers(this, childWrapper);\n\n return childWrapper;\n },\n\n replaceChild: function(newChildWrapper, oldChildWrapper) {\n assertIsNodeWrapper(newChildWrapper);\n\n var oldChildNode;\n if (isWrapper(oldChildWrapper)) {\n oldChildNode = unwrap(oldChildWrapper);\n } else {\n oldChildNode = oldChildWrapper;\n oldChildWrapper = wrap(oldChildNode);\n }\n\n if (oldChildWrapper.parentNode !== this) {\n // TODO(arv): DOMException\n throw new Error('NotFoundError');\n }\n\n var nextNode = oldChildWrapper.nextSibling;\n var previousNode = oldChildWrapper.previousSibling;\n var nodes;\n\n var useNative = !this.invalidateShadowRenderer() &&\n !invalidateParent(newChildWrapper);\n\n if (useNative) {\n nodes = collectNodesNative(newChildWrapper);\n } else {\n if (nextNode === newChildWrapper)\n nextNode = newChildWrapper.nextSibling;\n nodes = collectNodes(newChildWrapper, this, previousNode, nextNode);\n }\n\n if (!useNative) {\n if (this.firstChild === oldChildWrapper)\n this.firstChild_ = nodes[0];\n if (this.lastChild === oldChildWrapper)\n this.lastChild_ = nodes[nodes.length - 1];\n\n oldChildWrapper.previousSibling_ = oldChildWrapper.nextSibling_ =\n oldChildWrapper.parentNode_ = undefined;\n\n // replaceChild no matter what the parent is?\n if (oldChildNode.parentNode) {\n originalReplaceChild.call(\n oldChildNode.parentNode,\n unwrapNodesForInsertion(this, nodes),\n oldChildNode);\n }\n } else {\n ensureSameOwnerDocument(this, newChildWrapper);\n clearChildNodes(this);\n originalReplaceChild.call(this.impl, unwrap(newChildWrapper),\n oldChildNode);\n }\n\n enqueueMutation(this, 'childList', {\n addedNodes: nodes,\n removedNodes: createOneElementNodeList(oldChildWrapper),\n nextSibling: nextNode,\n previousSibling: previousNode\n });\n\n nodeWasRemoved(oldChildWrapper);\n nodesWereAdded(nodes, this);\n\n return oldChildWrapper;\n },\n\n /**\n * Called after a node was inserted. Subclasses override this to invalidate\n * the renderer as needed.\n * @private\n */\n nodeIsInserted_: function() {\n for (var child = this.firstChild; child; child = child.nextSibling) {\n child.nodeIsInserted_();\n }\n },\n\n hasChildNodes: function() {\n return this.firstChild !== null;\n },\n\n /** @type {Node} */\n get parentNode() {\n // If the parentNode has not been overridden, use the original parentNode.\n return this.parentNode_ !== undefined ?\n this.parentNode_ : wrap(this.impl.parentNode);\n },\n\n /** @type {Node} */\n get firstChild() {\n return this.firstChild_ !== undefined ?\n this.firstChild_ : wrap(this.impl.firstChild);\n },\n\n /** @type {Node} */\n get lastChild() {\n return this.lastChild_ !== undefined ?\n this.lastChild_ : wrap(this.impl.lastChild);\n },\n\n /** @type {Node} */\n get nextSibling() {\n return this.nextSibling_ !== undefined ?\n this.nextSibling_ : wrap(this.impl.nextSibling);\n },\n\n /** @type {Node} */\n get previousSibling() {\n return this.previousSibling_ !== undefined ?\n this.previousSibling_ : wrap(this.impl.previousSibling);\n },\n\n get parentElement() {\n var p = this.parentNode;\n while (p && p.nodeType !== Node.ELEMENT_NODE) {\n p = p.parentNode;\n }\n return p;\n },\n\n get textContent() {\n // TODO(arv): This should fallback to this.impl.textContent if there\n // are no shadow trees below or above the context node.\n var s = '';\n for (var child = this.firstChild; child; child = child.nextSibling) {\n if (child.nodeType != Node.COMMENT_NODE) {\n s += child.textContent;\n }\n }\n return s;\n },\n set textContent(textContent) {\n var removedNodes = snapshotNodeList(this.childNodes);\n\n if (this.invalidateShadowRenderer()) {\n removeAllChildNodes(this);\n if (textContent !== '') {\n var textNode = this.impl.ownerDocument.createTextNode(textContent);\n this.appendChild(textNode);\n }\n } else {\n clearChildNodes(this);\n this.impl.textContent = textContent;\n }\n\n var addedNodes = snapshotNodeList(this.childNodes);\n\n enqueueMutation(this, 'childListchildList, l = s.length - 1; i < l; i++) {\n t.unshift('..');\n }\n return t.join('/') + targetUrl.search + targetUrl.hash;\n}\n\n// exports\nscope.urlResolver = urlResolver;\n\n})(Platform);\n","/*\n * Copyright 2012 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(global) {\n\n var registrationsTable = new WeakMap();\n\n // We use setImmediate or postMessage for our future callback.\n var setImmediate = window.msSetImmediate;\n\n // Use post message to emulate setImmediate.\n if (!setImmediate) {\n var setImmediateQueue = [];\n var sentinel = String(Math.random());\n window.addEventListener('message', function(e) {\n if (e.data === sentinel) {\n var queue = setImmediateQueue;\n setImmediateQueue = [];\n queue.forEach(function(func) {\n func();\n });\n }\n });\n setImmediate = function(func) {\n setImmediateQueue.push(func);\n window.postMessage(sentinel, '*');\n };\n }\n\n // This is used to ensure that we never schedule 2 callas to setImmediate\n var isScheduled = false;\n\n // Keep track of observers that needs to be notified next time.\n var scheduledObservers = [];\n\n /**\n * Schedules |dispatchCallback| to be called in the future.\n * @param {MutationObserver} observer\n */\n function scheduleCallback(observer) {\n scheduledObservers.push(observer);\n if (!isScheduled) {\n isScheduled = true;\n setImmediate(dispatchCallbacks);\n }\n }\n\n function wrapIfNeeded(node) {\n return window.ShadowDOMPolyfill &&\n window.ShadowDOMPolyfill.wrapIfNeeded(node) ||\n node;\n }\n\n function dispatchCallbacks() {\n // http://dom.spec.whatwg.org/#mutation-observers\n\n isScheduled = false; // Used to allow a new setImmediate call above.\n\n var observers = scheduledObservers;\n scheduledObservers = [];\n // Sort observers based on their creation UID (incremental).\n observers.sort(function(o1, o2) {\n return o1.uid_ - o2.uid_;\n });\n\n var anyNonEmpty = false;\n observers.forEach(function(observer) {\n\n // 2.1, 2.2\n var queue = observer.takeRecords();\n // 2.3. Remove all transient registered observers whose observer is mo.\n removeTransientObserversFor(observer);\n\n // 2.4\n if (queue.length) {\n observer.callback_(queue, observer);\n anyNonEmpty = true;\n }\n });\n\n // 3.\n if (anyNonEmpty)\n dispatchCallbacks();\n }\n\n function removeTransientObserversFor(observer) {\n observer.nodes_.forEach(function(node) {\n var registrations = registrationsTable.get(node);\n if (!registrations)\n return;\n registrations.forEach(function(registration) {\n if (registration.observer === observer)\n registration.removeTransientObservers();\n });\n });\n }\n\n /**\n * This function is used for the \"For each registered observer observer (with\n * observer's options as options) in target's list of registered observers,\n * run these substeps:\" and the \"For each ancestor ancestor of target, and for\n * each registered observer observer (with options options) in ancestor's list\n * of registered observers, run these substeps:\" part of the algorithms. The\n * |options.subtree| is checked to ensure that the callback is called\n * correctly.\n *\n * @param {Node} target\n * @param {function(MutationObserverInit):MutationRecord} callback\n */\n function forEachAncestorAndObserverEnqueueRecord(target, callback) {\n for (var node = target; node; node = node.parentNode) {\n var registrations = registrationsTable.get(node);\n\n if (registrations) {\n for (var j = 0; j < registrations.length; j++) {\n var registration = registrations[j];\n var options = registration.options;\n\n // Only target ignores subtree.\n if (node !== target && !options.subtree)\n continue;\n\n var record = callback(options);\n if (record)\n registration.enqueue(record);\n }\n }\n }\n }\n\n var uidCounter = 0;\n\n /**\n * The class that maps to the DOM MutationObserver interface.\n * @param {Function} callback.\n * @constructor\n */\n function JsMutationObserver(callback) {\n this.callback_ = callback;\n this.nodes_ = [];\n this.records_ = [];\n this.uid_ = ++uidCounter;\n }\n\n JsMutationObserver.prototype = {\n observe: function(target, options) {\n target = wrapIfNeeded(target);\n\n // 1.1\n if (!options.childList && !options.attributes && !options.characterData ||\n\n // 1.2\n options.attributeOldValue && !options.attributes ||\n\n // 1.3\n options.attributeFilter && options.attributeFilter.length &&\n !options.attributes ||\n\n // 1.4\n options.characterDataOldValue && !options.characterData) {\n\n throw new SyntaxError();\n }\n\n var registrations = registrationsTable.get(target);\n if (!registrations)\n registrationsTable.set(target, registrations = []);\n\n // 2\n // If target's list of registered observers already includes a registered\n // observer associated with the context object, replace that registered\n // observer's options with options.\n var registration;\n for (var i = 0; i < registrations.length; i++) {\n if (registrations[i].observer === this) {\n registration = registrations[i];\n registration.removeListeners();\n registration.options = options;\n break;\n }\n }\n\n // 3.\n // Otherwise, add a new registered observer to target's list of registered\n // observers with the context object as the observer and options as the\n // options, and add target to context object's list of nodes on which it\n // is registered.\n if (!registration) {\n registration = new Registration(this, target, options);\n registrations.push(registration);\n this.nodes_.push(target);\n }\n\n registration.addListeners();\n },\n\n disconnect: function() {\n this.nodes_.forEach(function(node) {\n var registrations = registrationsTable.get(node);\n for (var i = 0; i < registrations.length; i++) {\n var registration = registrations[i];\n if (registration.observer === this) {\n registration.removeListeners();\n registrations.splice(i, 1);\n // Each node can only have one registered observer associated with\n // this observer.\n break;\n }\n }\n }, this);\n this.records_ = [];\n },\n\n takeRecords: function() {\n var copyOfRecords = this.records_;\n this.records_ = [];\n return copyOfRecords;\n }\n };\n\n /**\n * @param {string} type\n * @param {Node} target\n * @constructor\n */\n function MutationRecord(type, target) {\n this.type = type;\n this.target = target;\n this.addedNodes = [];\n this.removedNodes = [];\n this.previousSibling = null;\n this.nextSibling = null;\n this.attributeName = null;\n this.attributeNamespace = null;\n this.oldValue = null;\n }\n\n function copyMutationRecord(original) {\n var record = new MutationRecord(original.type, original.target);\n record.addedNodes = original.addedNodes.slice();\n record.removedNodes = original.removedNodes.slice();\n record.previousSibling = original.previousSibling;\n record.nextSibling = original.nextSibling;\n record.attributeName = original.attributeName;\n record.attributeNamespace = original.attributeNamespace;\n record.oldValue = original.oldValue;\n return record;\n };\n\n // We keep track of the two (possibly one) records used in a single mutation.\n var currentRecord, recordWithOldValue;\n\n /**\n * Creates a record without |oldValue| and caches it as |currentRecord| for\n * later use.\n * @param {string} oldValue\n * @return {MutationRecord}\n */\n function getRecord(type, target) {\n return currentRecord = new MutationRecord(type, target);\n }\n\n /**\n * Gets or creates a record with |oldValue| based in the |currentRecord|\n * @param {string} oldValue\n * @return {MutationRecord}\n */\n function getRecordWithOldValue(oldValue) {\n if (recordWithOldValue)\n return recordWithOldValue;\n recordWithOldValue = copyMutationRecord(currentRecord);\n recordWithOldValue.oldValue = oldValue;\n return recordWithOldValue;\n }\n\n function clearRecords() {\n currentRecord = recordWithOldValue = undefined;\n }\n\n /**\n * @param {MutationRecord} record\n * @return {boolean} Whether the record represents a record from the current\n * mutation event.\n */\n function recordRepresentsCurrentMutation(record) {\n return record === recordWithOldValue || record === currentRecord;\n }\n\n /**\n * Selects which record, if any, to replace the last record in the queue.\n * This returns |null| if no record should be replaced.\n *\n * @param {MutationRecord} lastRecord\n * @param {MutationRecord} newRecord\n * @param {MutationRecord}\n */\n function selectRecord(lastRecord, newRecord) {\n if (lastRecord === newRecord)\n return lastRecord;\n\n // Check if the the record we are adding represents the same record. If\n // so, we keep the one with the oldValue in it.\n if (recordWithOldValue && recordRepresentsCurrentMutation(lastRecord))\n return recordWithOldValue;\n\n return null;\n }\n\n /**\n * Class used to represent a registered observer.\n * @param {MutationObserver} observer\n * @param {Node} target\n * @param {MutationObserverInit} options\n * @constructor\n */\n function Registration(observer, target, options) {\n this.observer = observer;\n this.target = target;\n this.options = options;\n this.transientObservedNodes = [];\n }\n\n Registration.prototype = {\n enqueue: function(record) {\n var records = this.observer.records_;\n var length = records.length;\n\n // There are cases where we replace the last record with the new record.\n // For example if the record represents the same mutation we need to use\n // the one with the oldValue. If we get same record (this can happen as we\n // walk up the tree) we ignore the new record.\n if (records.length > 0) {\n var lastRecord = records[length - 1];\n var recordToReplaceLast = selectRecord(lastRecord, record);\n if (recordToReplaceLast) {\n records[length - 1] = recordToReplaceLast;\n return;\n }\n } else {\n scheduleCallback(this.observer);\n }\n\n records[length] = record;\n },\n\n addListeners: function() {\n this.addListeners_(this.target);\n },\n\n addListeners_: function(node) {\n var options = this.options;\n if (options.attributes)\n node.addEventListener('DOMAttrModified', this, true);\n\n if (options.characterData)\n node.addEventListener('DOMCharacterDataModified', this, true);\n\n if (options.childList)\n node.addEventListener('DOMNodeInserted', this, true);\n\n if (options.childList || options.subtree)\n node.addEventListener('DOMNodeRemoved', this, true);\n },\n\n removeListeners: function() {\n this.removeListeners_(this.target);\n },\n\n removeListeners_: function(node) {\n var options = this.options;\n if (options.attributes)\n node.removeEventListener('DOMAttrModified', this, true);\n\n if (options.characterData)\n node.removeEventListener('DOMCharacterDataModified', this, true);\n\n if (options.childList)\n node.removeEventListener('DOMNodeInserted', this, true);\n\n if (options.childListchildlist\n var target = e.relatedNode;\n var changedNode = e.target;\n var addedNodes, removedNodes;\n if (e.type === 'DOMNodeInserted') {\n addedNodes = [changedNode];\n removedNodes = [];\n } else {\n\n addedNodes = [];\n removedNodes = [changedNode];\n }\n var previousSibling = changedNode.previousSibling;\n var nextSibling = changedNode.nextSibling;\n\n // 1.\n var record = getRecord('childList', target);\n record.addedNodes = addedNodes;\n record.removedNodes = removedNodes;\n record.previousSibling = previousSibling;\n record.nextSibling = nextSibling;\n\n forEachAncestorAndObserverEnqueueRecord(target, function(options) {\n // 2.1, 3.2\n if (!options.childList.\nfunction cloneStyle(style) {\n var clone = style.ownerDocument.createElement('style');\n clone.textContent = style.textContent;\n path.resolveUrlsInStyle(clone);\n return clone;\n}\n\n// path fixup: style elements in imports must be made relative to the main \n// document. We fixup url's in url() and @import.\nvar CSS_URL_REGEXP = /(url\\()([^)]*)(\\))/g;\nvar CSS_IMPORT_REGEXP = /(@import[\\s]+(?!url\\())([^;]*)(;)/g;\n\nvar path = {\n resolveUrlsInStyle: function(style) {\n var doc = style.ownerDocument;\n var resolver = doc.createElement('a');\n style.textContent = this.resolveUrlsInCssText(style.textContent, resolver);\n return style; \n },\n resolveUrlsInCssText: function(cssText, urlObj) {\n var r = this.replaceUrls(cssText, urlObj, CSS_URL_REGEXP);\n r = this.replaceUrls(r, urlObj, CSS_IMPORT_REGEXP);\n return r;\n },\n replaceUrls: function(text, urlObj, regexp) {\n return text.replace(regexp, function(m, pre, url, post) {\n var urlPath = url.replace(/[\"']/g, '');\n urlObj.href = urlPath;\n urlPath = urlObj.href;\n return pre + '\\'' + urlPath + '\\'' + post;\n }); \n }\n}\n\n// exports\nscope.parser = importParser;\nscope.path = path;\nscope.isIE = isIe;\n\n})(HTMLImports);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\nvar hasNative = ('import' in document.createElement('link'));\nvar useNative = hasNative;\nvar flags = scope.flags;\nvar IMPORT_LINK_TYPE = 'import';\n\n// TODO(sorvell): SD polyfill intrusion\nvar mainDoc = window.ShadowDOMPolyfill ? \n ShadowDOMPolyfill.wrapIfNeeded(document) : document;\n\nif (!useNative) {\n\n // imports\n var xhr = scope.xhr;\n var Loader = scope.Loader;\n var parser = scope.parser;\n\n // importer\n // highlander object to manage loading of imports\n\n // for any document, importer:\n // - loads any linked import documents (with deduping)\n\n var importer = {\n documents: {},\n // nodes to load in the mian document\n documentPreloadSelectors: 'link[rel=' + IMPORT_LINK_TYPE + ']',\n // nodes to load in imports\n importsPreloadSelectors: [\n 'link[rel=' + IMPORT_LINK_TYPE + ']'\n ].join(','),\n loadNode: function(node) {\n importLoader.addNode(node);\n },\n // load all loadable elements within the parent element\n loadSubtree: function(parent) {\n var nodes = this.marshalNodes(parent);\n // add these nodes to loader's queue\n importLoader.addNodes(nodes);\n },\n marshalNodes: function(parent) {\n // all preloadable nodes in inDocument\n return parent.querySelectorAll(this.loadSelectorsForNode(parent));\n },\n // find the proper set of load selectors for a given node\n loadSelectorsForNode: function(node) {\n var doc = node.ownerDocument || node;\n return doc === mainDoc ? this.documentPreloadSelectors :\n this.importsPreloadSelectors;\n },\n loaded: function(url, elt, resource) {\n flags.load && console.log('loaded', url, elt);\n // store generic resource\n // TODO(sorvell): fails for nodes inside <template>.content\n // see https://code.google.com/p/chromium/issues/detail?id=249381.\n elt.__resource = resource;\n if (isDocumentLink(elt)) {\n var doc = this.documents[url];\n // if we've never seen a document at this url\n if (!doc) {\n // generate an HTMLDocument from data\n doc = makeDocument(resource, url);\n doc.__importLink = elt;\n // TODO(sorvell): we cannot use MO to detect parsed nodes because\n // SD polyfill does not report these as mutations.\n this.bootDocument(doc);\n // cache document\n this.documents[url] = doc;\n }\n // don't store import record until we're actually loaded\n // store document resource\n elt.import = doc;\n }\n parser.parseNext();\n },\n bootDocument: function(doc) {\n this.loadSubtree(doc);\n this.observe(doc);\n parser.parseNext();\n },\n loadedAll: function() {\n parser.parseNext();\n }\n };\n\n // loader singleton\n var importLoader = new Loader(importer.loaded.bind(importer), \n importer.loadedAll.bind(importer));\n\n function isDocumentLink(elt) {\n return isLinkRel(elt, IMPORT_LINK_TYPE);\n }\n\n function isLinkRel(elt, rel) {\n return elt.localName === 'link' && elt.getAttribute('rel') === rel;\n }\n\n function isScript(elt) {\n return elt.localName === 'script';\n }\n\n function makeDocument(resource, url) {\n // create a new HTML document\n var doc = resource;\n if (!(doc instanceof Document)) {\n doc = document.implementation.createHTMLDocument(IMPORT_LINK_TYPE);\n }\n // cache the new document's source url\n doc._URL = url;\n // establish a relative path via <base>\n var base = doc.createElement('base');\n base.setAttribute('href', url);\n // add baseURI support to browsers (IE) that lack it.\n if (!doc.baseURI) {\n doc.baseURI = url;\n }\n // ensure UTF-8 charset\n var meta = doc.createElement('meta');\n meta.setAttribute('charset', 'utf-8');\n\n doc.head.appendChild(meta);\n doc.head.appendChild(base);\n // install HTML last as it may trigger CustomElement upgrades\n // TODO(sjmiles): problem wrt to template boostrapping below,\n // template bootstrapping must (?) come before element upgrade\n // but we cannot bootstrap templates until they are in a document\n // which is too late\n if (!(resource instanceof Document)) {\n // install html\n doc.body.innerHTML = resource;\n }\n // TODO(sorvell): ideally this code is not aware of Template polyfill,\n // but for now the polyfill needs help to bootstrap these templates\n if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {\n HTMLTemplateElement.bootstrap(doc);\n }\n return doc;\n }\n} else {\n // do nothing if using native imports\n var importer = {};\n}\n\n// NOTE: We cannot polyfill document.currentScript because it's not possible\n// both to override and maintain the ability to capture the native value;\n// therefore we choose to expose _currentScript both when native imports\n// and the polyfill are in use.\nvar currentScriptDescriptor = {\n get: function() {\n return HTMLImports.currentScript || document.currentScript;\n },\n configurable: true\n};\n\nObject.defineProperty(document, '_currentScript', currentScriptDescriptor);\nObject.defineProperty(mainDoc, '_currentScript', currentScriptDescriptor);\n\n// Polyfill document.baseURI for browsers without it.\nif (!document.baseURI) {\n var baseURIDescriptor = {\n get: function() {\n return window.location.href;\n },\n configurable: true\n };\n\n Object.defineProperty(document, 'baseURI', baseURIDescriptor);\n Object.defineProperty(mainDoc, 'baseURI', baseURIDescriptor);\n}\n\n// call a callback when all HTMLImports in the document at call (or at least\n// document ready) time have loaded.\n// 1. ensure the document is in a ready state (has dom), then \n// 2. watch for loading of imports and call callback when done\nfunction whenImportsReady(callback, doc) {\n doc = doc || mainDoc;\n // if document is loading, wait and try again\n whenDocumentReady(function() {\n watchImportsLoad(callback, doc);\n }, doc);\n}\n\n// call the callback when the document is in a ready state (has dom)\nvar requiredReadyState = HTMLImports.isIE ? 'complete' : 'interactive';\nvar READY_EVENT = 'readystatechange';\nfunction isDocumentReady(doc) {\n return (doc.readyState === 'complete' ||\n doc.readyState === requiredReadyState);\n}\n\n// call <callback> when we ensure the document is in a ready state\nfunction whenDocumentReady(callback, doc) {\n if (!isDocumentReady(doc)) {\n var checkReady = function() {\n if (doc.readyState === 'complete' || \n doc.readyState === requiredReadyState) {\n doc.removeEventListener(READY_EVENT, checkReady);\n whenDocumentReady(callback, doc);\n }\n }\n doc.addEventListener(READY_EVENT, checkReady);\n } else if (callback) {\n callback();\n }\n}\n\n// call <callback> when we ensure all imports have loaded\nfunction watchImportsLoad(callback, doc) {\n var imports = doc.querySelectorAll('link[rel=import]');\n var loaded = 0, l = imports.length;\n function checkDone(d) { \n if (loaded == l) {\n callback && callback();\n }\n }\n function loadedImport(e) {\n loaded++;\n checkDone();\n }\n if (l) {\n for (var i=0, imp; (i<l) && (imp=imports[i]); i++) {\n if (isImportLoaded(imp)) {\n loadedImport.call(imp);\n } else {\n imp.addEventListener('load', loadedImport);\n imp.addEventListener('error', loadedImport);\n }\n }\n } else {\n checkDone();\n }\n}\n\nfunction isImportLoaded(link) {\n return useNative ? (link.import && (link.import.readyState !== 'loading')) || link.__loaded :\n link.__importParsed;\n}\n\n// TODO(sorvell): install a mutation observer to see if HTMLImports have loaded\n// this is a workaround for https://www.w3.org/Bugs/Public/show_bug.cgi?id=25007\n// and should be removed when this bug is addressed.\nif (useNative) {\n new MutationObserver(function(mxns) {\n for (var i=0, l=mxns.length, m; (i < l) && (m=mxns[i]); i++) {\n if (m.addedNodes) {\n handleImports(m.addedNodes);\n }\n }\n }).observe(document.head, {childList: true});\n\n function handleImports(nodes) {\n for (var i=0, l=nodes.length, n; (i<l) && (n=nodes[i]); i++) {\n if (isImport(n)) {\n handleImport(n); \n }\n }\n }\n\n function isImport(element) {\n return element.localName === 'link' && element.rel === 'import';\n }\n\n function handleImport(element) {\n var loaded = element.import;\n if (loaded) {\n markTargetLoaded({target: element});\n } else {\n element.addEventListener('load', markTargetLoaded);\n element.addEventListener('error', markTargetLoaded);\n }\n }\n\n function markTargetLoaded(event) {\n event.target.__loaded = true;\n }\n\n}\n\n// exports\nscope.hasNative = hasNative;\nscope.useNative = useNative;\nscope.importer = importer;\nscope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;\nscope.isImportLoaded = isImportLoaded;\nscope.importLoader = importLoader;\nscope.whenReady = whenImportsReady;\n\n// deprecated\nscope.whenImportsReady = whenImportsReady;\n\n})(window.HTMLImports);\n"," /*\nCopyright 2013 The Polymer Authors. All rights reserved.\nUse of this source code is governed by a BSD-style\nlicense that can be found in the LICENSE file.\n*/\n\n(function(scope){\n\nvar IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;\nvar importSelector = 'link[rel=' + IMPORT_LINK_TYPE + ']';\nvar importer = scope.importer;\nvar parser = scope.parser;\n\n// we track mutations for addedNodes, looking for imports\nfunction handler(mutations) {\n for (var i=0, l=mutations.length, m; (i<l) && (m=mutations[i]); i++) {\n if (m.type === 'childListchildList: true, subtree: true});\n}\n\n// exports\n// TODO(sorvell): factor so can put on scope\nscope.observe = observe;\nimporter.observe = observe;\n\n})(HTMLImports);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(){\n\n// bootstrap\n\n// IE shim for CustomEvent\nif (typeof window.CustomEvent !== 'function') {\n window.CustomEvent = function(inType, dictionary) {\n var e = document.createEvent('HTMLEvents');\n e.initEvent(inType,\n dictionary.bubbles === false ? false : true,\n dictionary.cancelable === false ? false : true,\n dictionary.detail);\n return e;\n };\n}\n\n// TODO(sorvell): SD polyfill intrusion\nvar doc = window.ShadowDOMPolyfill ? \n window.ShadowDOMPolyfill.wrapIfNeeded(document) : document;\n\n// Fire the 'HTMLImportsLoaded' event when imports in document at load time \n// have loaded. This event is required to simulate the script blocking \n// behavior of native imports. A main document script that needs to be sure\n// imports have loaded should wait for this event.\nHTMLImports.whenImportsReady(function() {\n HTMLImports.ready = true;\n HTMLImports.readyTime = new Date().getTime();\n doc.dispatchEvent(\n new CustomEvent('HTMLImportsLoaded', {bubbles: true})\n );\n});\n\n\n// no need to bootstrap the polyfill when native imports is available.\nif (!HTMLImports.useNative) {\n function bootstrap() {\n HTMLImports.importer.bootDocument(doc);\n }\n \n // TODO(sorvell): SD polyfill does *not* generate mutations for nodes added\n // by the parser. For this reason, we must wait until the dom exists to \n // bootstrap.\n if (document.readyState === 'complete' ||\n (document.readyState === 'interactive' && !window.attachEvent)) {\n bootstrap();\n } else {\n document.addEventListener('DOMContentLoaded', bootstrap);\n }\n}\n\n})();\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\nwindow.CustomElements = window.CustomElements || {flags:{}};","/*\r\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\r\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\r\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\r\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\r\n * Code distributed by Google as part of the polymer project is also\r\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\r\n */\r\n\r\n(function(scope){\r\n\r\nvar logFlags = window.logFlags || {};\r\nvar IMPORT_LINK_TYPE = window.HTMLImports ? HTMLImports.IMPORT_LINK_TYPE : 'none';\r\n\r\n// walk the subtree rooted at node, applying 'find(element, data)' function\r\n// to each element\r\n// if 'find' returns true for 'element', do not search element's subtree\r\nfunction findAll(node, find, data) {\r\n var e = node.firstElementChild;\r\n if (!e) {\r\n e = node.firstChild;\r\n while (e && e.nodeType !== Node.ELEMENT_NODE) {\r\n e = e.nextSibling;\r\n }\r\n }\r\n while (e) {\r\n if (find(e, data) !== true) {\r\n findAll(e, find, data);\r\n }\r\n e = e.nextElementSibling;\r\n }\r\n return null;\r\n}\r\n\r\n// walk all shadowRoots on a given node.\r\nfunction forRoots(node, cb) {\r\n var root = node.shadowRoot;\r\n while(root) {\r\n forSubtree(root, cb);\r\n root = root.olderShadowRoot;\r\n }\r\n}\r\n\r\n// walk the subtree rooted at node, including descent into shadow-roots,\r\n// applying 'cb' to each element\r\nfunction forSubtree(node, cb) {\r\n //logFlags.dom && node.childNodes && node.childNodes.length && console.group('subTree: ', node);\r\n findAll(node, function(e) {\r\n if (cb(e)) {\r\n return true;\r\n }\r\n forRoots(e, cb);\r\n });\r\n forRoots(node, cb);\r\n //logFlags.dom && node.childNodes && node.childNodes.length && console.groupEnd();\r\n}\r\n\r\n// manage lifecycle on added node\r\nfunction added(node) {\r\n if (upgrade(node)) {\r\n insertedNode(node);\r\n return true;\r\n }\r\n inserted(node);\r\n}\r\n\r\n// manage lifecycle on added node's subtree only\r\nfunction addedSubtree(node) {\r\n forSubtree(node, function(e) {\r\n if (added(e)) {\r\n return true;\r\n }\r\n });\r\n}\r\n\r\n// manage lifecycle on added node and it's subtree\r\nfunction addedNode(node) {\r\n return added(node) || addedSubtree(node);\r\n}\r\n\r\n// upgrade custom elements at node, if applicable\r\nfunction upgrade(node) {\r\n if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {\r\n var type = node.getAttribute('is') || node.localName;\r\n var definition = scope.registry[type];\r\n if (definition) {\r\n logFlags.dom && console.group('upgrade:', node.localName);\r\n scope.upgrade(node);\r\n logFlags.dom && console.groupEnd();\r\n return true;\r\n }\r\n }\r\n}\r\n\r\nfunction insertedNode(node) {\r\n inserted(node);\r\n if (inDocument(node)) {\r\n forSubtree(node, function(e) {\r\n inserted(e);\r\n });\r\n }\r\n}\r\n\r\n// TODO(sorvell): on platforms without MutationObserver, mutations may not be\r\n// reliable and therefore attached/detached are not reliable.\r\n// To make these callbacks less likely to fail, we defer all inserts and removes\r\n// to give a chance for elements to be inserted into dom.\r\n// This ensures attachedCallback fires for elements that are created and\r\n// immediately added to dom.\r\nvar hasPolyfillMutations = (!window.MutationObserver ||\r\n (window.MutationObserver === window.JsMutationObserver));\r\nscope.hasPolyfillMutations = hasPolyfillMutations;\r\n\r\nvar isPendingMutations = false;\r\nvar pendingMutations = [];\r\nfunction deferMutation(fn) {\r\n pendingMutations.push(fn);\r\n if (!isPendingMutations) {\r\n isPendingMutations = true;\r\n var async = (window.Platform && window.Platform.endOfMicrotask) ||\r\n setTimeout;\r\n async(takeMutations);\r\n }\r\n}\r\n\r\nfunction takeMutations() {\r\n isPendingMutations = false;\r\n var $p = pendingMutations;\r\n for (var i=0, l=$p.length, p; (i<l) && (p=$p[i]); i++) {\r\n p();\r\n }\r\n pendingMutations = [];\r\n}\r\n\r\nfunction inserted(element) {\r\n if (hasPolyfillMutations) {\r\n deferMutation(function() {\r\n _inserted(element);\r\n });\r\n } else {\r\n _inserted(element);\r\n }\r\n}\r\n\r\n// TODO(sjmiles): if there are descents into trees that can never have inDocument(*) true, fix this\r\nfunction _inserted(element) {\r\n // TODO(sjmiles): it's possible we were inserted and removed in the space\r\n // of one microtask, in which case we won't be 'inDocument' here\r\n // But there are other cases where we are testing for inserted without\r\n // specific knowledge of mutations, and must test 'inDocument' to determine\r\n // whether to call inserted\r\n // If we can factor these cases into separate code paths we can have\r\n // better diagnostics.\r\n // TODO(sjmiles): when logging, do work on all custom elements so we can\r\n // track behavior even when callbacks not defined\r\n //console.log('inserted: ', element.localName);\r\n if (element.attachedCallback || element.detachedCallback || (element.__upgraded__ && logFlags.dom)) {\r\n logFlags.dom && console.group('inserted:', element.localName);\r\n if (inDocument(element)) {\r\n element.__inserted = (element.__inserted || 0) + 1;\r\n // if we are in a 'removed' state, bluntly adjust to an 'inserted' state\r\n if (element.__inserted < 1) {\r\n element.__inserted = 1;\r\n }\r\n // if we are 'over inserted', squelch the callback\r\n if (element.__inserted > 1) {\r\n logFlags.dom && console.warn('inserted:', element.localName,\r\n 'insert/remove count:', element.__inserted)\r\n } else if (element.attachedCallback) {\r\n logFlags.dom && console.log('inserted:', element.localName);\r\n element.attachedCallback();\r\n }\r\n }\r\n logFlags.dom && console.groupEnd();\r\n }\r\n}\r\n\r\nfunction removedNode(node) {\r\n removed(node);\r\n forSubtree(node, function(e) {\r\n removed(e);\r\n });\r\n}\r\n\r\nfunction removed(element) {\r\n if (hasPolyfillMutations) {\r\n deferMutation(function() {\r\n _removed(element);\r\n });\r\n } else {\r\n _removed(element);\r\n }\r\n}\r\n\r\nfunction _removed(element) {\r\n // TODO(sjmiles): temporary: do work on all custom elements so we can track\r\n // behavior even when callbacks not defined\r\n if (element.attachedCallback || element.detachedCallback || (element.__upgraded__ && logFlags.dom)) {\r\n logFlags.dom && console.group('removed:', element.localName);\r\n if (!inDocument(element)) {\r\n element.__inserted = (element.__inserted || 0) - 1;\r\n // if we are in a 'inserted' state, bluntly adjust to an 'removed' state\r\n if (element.__inserted > 0) {\r\n element.__inserted = 0;\r\n }\r\n // if we are 'over removed', squelch the callback\r\n if (element.__inserted < 0) {\r\n logFlags.dom && console.warn('removed:', element.localName,\r\n 'insert/remove count:', element.__inserted)\r\n } else if (element.detachedCallback) {\r\n element.detachedCallback();\r\n }\r\n }\r\n logFlags.dom && console.groupEnd();\r\n }\r\n}\r\n\r\n// SD polyfill intrustion due mainly to the fact that 'document'\r\n// is not entirely wrapped\r\nfunction wrapIfNeeded(node) {\r\n return window.ShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node)\r\n : node;\r\n}\r\n\r\nfunction inDocument(element) {\r\n var p = element;\r\n var doc = wrapIfNeeded(document);\r\n while (p) {\r\n if (p == doc) {\r\n return true;\r\n }\r\n p = p.parentNode || p.host;\r\n }\r\n}\r\n\r\nfunction watchShadow(node) {\r\n if (node.shadowRoot && !node.shadowRoot.__watched) {\r\n logFlags.dom && console.log('watching shadow-root for: ', node.localName);\r\n // watch all unwatched roots...\r\n var root = node.shadowRoot;\r\n while (root) {\r\n watchRoot(root);\r\n root = root.olderShadowRoot;\r\n }\r\n }\r\n}\r\n\r\nfunction watchRoot(root) {\r\n if (!root.__watched) {\r\n observe(root);\r\n root.__watched = true;\r\n }\r\n}\r\n\r\nfunction handler(mutations) {\r\n //\r\n if (logFlags.dom) {\r\n var mx = mutations[0];\r\n if (mx && mx.type === 'childList' && mx.addedNodes) {\r\n if (mx.addedNodes) {\r\n var d = mx.addedNodes[0];\r\n while (d && d !== document && !d.host) {\r\n d = d.parentNode;\r\n }\r\n var u = d && (d.URL || d._URL || (d.host && d.host.localName)) || '';\r\n u = u.split('/?').shift().split('/').pop();\r\n }\r\n }\r\n console.group('mutations (%d) [%s]', mutations.length, u || '');\r\n }\r\n //\r\n mutations.forEach(function(mx) {\r\n //logFlags.dom && console.group('mutation');\r\n if (mx.type === 'childList') {\r\n forEach(mx.addedNodes, function(n) {\r\n //logFlags.dom && console.log(n.localName);\r\n if (!n.localName) {\r\n return;\r\n }\r\n // nodes added may need lifecycle management\r\n addedNode(n);\r\n });\r\n // removed nodes may need lifecycle management\r\n forEach(mx.removedNodes, function(n) {\r\n //logFlags.dom && console.log(n.localName);\r\n if (!n.localName) {\r\n return;\r\n }\r\n removedNode(n);\r\n });\r\n }\r\n //logFlags.dom && console.groupEnd();\r\n });\r\n logFlags.dom && console.groupEnd();\r\n};\r\n\r\nvar observer = new MutationObserver(handler);\r\n\r\nfunction takeRecords() {\r\n // TODO(sjmiles): ask Raf why we have to call handler ourselves\r\n handler(observer.takeRecords());\r\n takeMutations();\r\n}\r\n\r\nvar forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);\r\n\r\nfunction observe(inRoot) {\r\n observer.observe(inRoot, {childList
