summaryrefslogtreecommitdiff
path: root/systrace/catapult/third_party/polymer/components/webcomponentsjs/MutationObserver.js
diff options
context:
space:
mode:
Diffstat (limited to 'systrace/catapult/third_party/polymer/components/webcomponentsjs/MutationObserver.js')
-rw-r--r--systrace/catapult/third_party/polymer/components/webcomponentsjs/MutationObserver.js350
1 files changed, 0 insertions, 350 deletions
diff --git a/systrace/catapult/third_party/polymer/components/webcomponentsjs/MutationObserver.js b/systrace/catapult/third_party/polymer/components/webcomponentsjs/MutationObserver.js
deleted file mode 100644
index 204de7d..0000000
--- a/systrace/catapult/third_party/polymer/components/webcomponentsjs/MutationObserver.js
+++ /dev/null
@@ -1,350 +0,0 @@
-/**
- * @license
- * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
- * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
- * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
- * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
- * Code distributed by Google as part of the polymer project is also
- * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
- */
-// @version 0.7.24
-if (typeof WeakMap === "undefined") {
- (function() {
- var defineProperty = Object.defineProperty;
- var counter = Date.now() % 1e9;
- var WeakMap = function() {
- this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
- };
- WeakMap.prototype = {
- set: function(key, value) {
- var entry = key[this.name];
- if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
- value: [ key, value ],
- writable: true
- });
- return this;
- },
- get: function(key) {
- var entry;
- return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
- },
- "delete": function(key) {
- var entry = key[this.name];
- if (!entry || entry[0] !== key) return false;
- entry[0] = entry[1] = undefined;
- return true;
- },
- has: function(key) {
- var entry = key[this.name];
- if (!entry) return false;
- return entry[0] === key;
- }
- };
- window.WeakMap = WeakMap;
- })();
-}
-
-(function(global) {
- if (global.JsMutationObserver) {
- return;
- }
- var registrationsTable = new WeakMap();
- var setImmediate;
- if (/Trident|Edge/.test(navigator.userAgent)) {
- setImmediate = setTimeout;
- } else if (window.setImmediate) {
- setImmediate = window.setImmediate;
- } else {
- var setImmediateQueue = [];
- var sentinel = String(Math.random());
- window.addEventListener("message", function(e) {
- if (e.data === sentinel) {
- var queue = setImmediateQueue;
- setImmediateQueue = [];
- queue.forEach(function(func) {
- func();
- });
- }
- });
- setImmediate = function(func) {
- setImmediateQueue.push(func);
- window.postMessage(sentinel, "*");
- };
- }
- var isScheduled = false;
- var scheduledObservers = [];
- function scheduleCallback(observer) {
- scheduledObservers.push(observer);
- if (!isScheduled) {
- isScheduled = true;
- setImmediate(dispatchCallbacks);
- }
- }
- function wrapIfNeeded(node) {
- return window.ShadowDOMPolyfill && window.ShadowDOMPolyfill.wrapIfNeeded(node) || node;
- }
- function dispatchCallbacks() {
- isScheduled = false;
- var observers = scheduledObservers;
- scheduledObservers = [];
- observers.sort(function(o1, o2) {
- return o1.uid_ - o2.uid_;
- });
- var anyNonEmpty = false;
- observers.forEach(function(observer) {
- var queue = observer.takeRecords();
- removeTransientObserversFor(observer);
- if (queue.length) {
- observer.callback_(queue, observer);
- anyNonEmpty = true;
- }
- });
- if (anyNonEmpty) dispatchCallbacks();
- }
- function removeTransientObserversFor(observer) {
- observer.nodes_.forEach(function(node) {
- var registrations = registrationsTable.get(node);
- if (!registrations) return;
- registrations.forEach(function(registration) {
- if (registration.observer === observer) registration.removeTransientObservers();
- });
- });
- }
- function forEachAncestorAndObserverEnqueueRecord(target, callback) {
- for (var node = target; node; node = node.parentNode) {
- var registrations = registrationsTable.get(node);
- if (registrations) {
- for (var j = 0; j < registrations.length; j++) {
- var registration = registrations[j];
- var options = registration.options;
- if (node !== target && !options.subtree) continue;
- var record = callback(options);
- if (record) registration.enqueue(record);
- }
- }
- }
- }
- var uidCounter = 0;
- function JsMutationObserver(callback) {
- this.callback_ = callback;
- this.nodes_ = [];
- this.records_ = [];
- this.uid_ = ++uidCounter;
- }
- JsMutationObserver.prototype = {
- observe: function(target, options) {
- target = wrapIfNeeded(target);
- if (!options.childList && !options.attributes && !options.characterData || options.attributeOldValue && !options.attributes || options.attributeFilter && options.attributeFilter.length && !options.attributes || options.characterDataOldValue && !options.characterData) {
- throw new SyntaxError();
- }
- var registrations = registrationsTable.get(target);
- if (!registrations) registrationsTable.set(target, registrations = []);
- var registration;
- for (var i = 0; i < registrations.length; i++) {
- if (registrations[i].observer === this) {
- registration = registrations[i];
- registration.removeListeners();
- registration.options = options;
- break;
- }
- }
- if (!registration) {
- registration = new Registration(this, target, options);
- registrations.push(registration);
- this.nodes_.push(target);
- }
- registration.addListeners();
- },
- disconnect: function() {
- this.nodes_.forEach(function(node) {
- var registrations = registrationsTable.get(node);
- for (var i = 0; i < registrations.length; i++) {
- var registration = registrations[i];
- if (registration.observer === this) {
- registration.removeListeners();
- registrations.splice(i, 1);
- break;
- }
- }
- }, this);
- this.records_ = [];
- },
- takeRecords: function() {
- var copyOfRecords = this.records_;
- this.records_ = [];
- return copyOfRecords;
- }
- };
- function MutationRecord(type, target) {
- this.type = type;
- this.target = target;
- this.addedNodes = [];
- this.removedNodes = [];
- this.previousSibling = null;
- this.nextSibling = null;
- this.attributeName = null;
- this.attributeNamespace = null;
- this.oldValue = null;
- }
- function copyMutationRecord(original) {
- var record = new MutationRecord(original.type, original.target);
- record.addedNodes = original.addedNodes.slice();
- record.removedNodes = original.removedNodes.slice();
- record.previousSibling = original.previousSibling;
- record.nextSibling = original.nextSibling;
- record.attributeName = original.attributeName;
- record.attributeNamespace = original.attributeNamespace;
- record.oldValue = original.oldValue;
- return record;
- }
- var currentRecord, recordWithOldValue;
- function getRecord(type, target) {
- return currentRecord = new MutationRecord(type, target);
- }
- function getRecordWithOldValue(oldValue) {
- if (recordWithOldValue) return recordWithOldValue;
- recordWithOldValue = copyMutationRecord(currentRecord);
- recordWithOldValue.oldValue = oldValue;
- return recordWithOldValue;
- }
- function clearRecords() {
- currentRecord = recordWithOldValue = undefined;
- }
- function recordRepresentsCurrentMutation(record) {
- return record === recordWithOldValue || record === currentRecord;
- }
- function selectRecord(lastRecord, newRecord) {
- if (lastRecord === newRecord) return lastRecord;
- if (recordWithOldValue && recordRepresentsCurrentMutation(lastRecord)) return recordWithOldValue;
- return null;
- }
- function Registration(observer, target, options) {
- this.observer = observer;
- this.target = target;
- this.options = options;
- this.transientObservedNodes = [];
- }
- Registration.prototype = {
- enqueue: function(record) {
- var records = this.observer.records_;
- var length = records.length;
- if (records.length > 0) {
- var lastRecord = records[length - 1];
- var recordToReplaceLast = selectRecord(lastRecord, record);
- if (recordToReplaceLast) {
- records[length - 1] = recordToReplaceLast;
- return;
- }
- } else {
- scheduleCallback(this.observer);
- }
- records[length] = record;
- },
- addListeners: function() {
- this.addListeners_(this.target);
- },
- addListeners_: function(node) {
- var options = this.options;
- if (options.attributes) node.addEventListener("DOMAttrModified", this, true);
- if (options.characterData) node.addEventListener("DOMCharacterDataModified", this, true);
- if (options.childList) node.addEventListener("DOMNodeInserted", this, true);
- if (options.childList || options.subtree) node.addEventListener("DOMNodeRemoved", this, true);
- },
- removeListeners: function() {
- this.removeListeners_(this.target);
- },
- removeListeners_: function(node) {
- var options = this.options;
- if (options.attributes) node.removeEventListener("DOMAttrModified", this, true);
- if (options.characterData) node.removeEventListener("DOMCharacterDataModified", this, true);
- if (options.childList) node.removeEventListener("DOMNodeInserted", this, true);
- if (options.childList || options.subtree) node.removeEventListener("DOMNodeRemoved", this, true);
- },
- addTransientObserver: function(node) {
- if (node === this.target) return;
- this.addListeners_(node);
- this.transientObservedNodes.push(node);
- var registrations = registrationsTable.get(node);
- if (!registrations) registrationsTable.set(node, registrations = []);
- registrations.push(this);
- },
- removeTransientObservers: function() {
- var transientObservedNodes = this.transientObservedNodes;
- this.transientObservedNodes = [];
- transientObservedNodes.forEach(function(node) {
- this.removeListeners_(node);
- var registrations = registrationsTable.get(node);
- for (var i = 0; i < registrations.length; i++) {
- if (registrations[i] === this) {
- registrations.splice(i, 1);
- break;
- }
- }
- }, this);
- },
- handleEvent: function(e) {
- e.stopImmediatePropagation();
- switch (e.type) {
- case "DOMAttrModified":
- var name = e.attrName;
- var namespace = e.relatedNode.namespaceURI;
- var target = e.target;
- var record = new getRecord("attributes", target);
- record.attributeName = name;
- record.attributeNamespace = namespace;
- var oldValue = e.attrChange === MutationEvent.ADDITION ? null : e.prevValue;
- forEachAncestorAndObserverEnqueueRecord(target, function(options) {
- if (!options.attributes) return;
- if (options.attributeFilter && options.attributeFilter.length && options.attributeFilter.indexOf(name) === -1 && options.attributeFilter.indexOf(namespace) === -1) {
- return;
- }
- if (options.attributeOldValue) return getRecordWithOldValue(oldValue);
- return record;
- });
- break;
-
- case "DOMCharacterDataModified":
- var target = e.target;
- var record = getRecord("characterData", target);
- var oldValue = e.prevValue;
- forEachAncestorAndObserverEnqueueRecord(target, function(options) {
- if (!options.characterData) return;
- if (options.characterDataOldValue) return getRecordWithOldValue(oldValue);
- return record;
- });
- break;
-
- case "DOMNodeRemoved":
- this.addTransientObserver(e.target);
-
- case "DOMNodeInserted":
- var changedNode = e.target;
- var addedNodes, removedNodes;
- if (e.type === "DOMNodeInserted") {
- addedNodes = [ changedNode ];
- removedNodes = [];
- } else {
- addedNodes = [];
- removedNodes = [ changedNode ];
- }
- var previousSibling = changedNode.previousSibling;
- var nextSibling = changedNode.nextSibling;
- var record = getRecord("childList", e.target.parentNode);
- record.addedNodes = addedNodes;
- record.removedNodes = removedNodes;
- record.previousSibling = previousSibling;
- record.nextSibling = nextSibling;
- forEachAncestorAndObserverEnqueueRecord(e.relatedNode, function(options) {
- if (!options.childList) return;
- return record;
- });
- }
- clearRecords();
- }
- };
- global.JsMutationObserver = JsMutationObserver;
- if (!global.MutationObserver) {
- global.MutationObserver = JsMutationObserver;
- JsMutationObserver._isPolyfilled = true;
- }
-})(self); \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-11 14:45:39 +0000