jmesserly@google.com
e70b74ee29
ShadowDOM is at revision 82461fdbe7b0208960cf1d52f2b1c5ca31e1e564 observe-js is at revision 842f9c0602350f8d81ea20637266c2398575c77d WeakMap is at revision 67bd3b198a131748c73cd274532d69692f1a8c24 platform-dev is at revision 64a92f273462f04a84abbe2f054294f2b62dbcd6 R=sigmund@google.com Review URL: https://codereview.chromium.org//84163002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@30593 260f80e4-7a28-3924-810f-c04153c831b5
6735 lines
194 KiB
JavaScript
6735 lines
194 KiB
JavaScript
if (!HTMLElement.prototype.createShadowRoot
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|| window.__forceShadowDomPolyfill) {
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/*
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* Copyright 2013 The Polymer Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style
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* license that can be found in the LICENSE file.
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*/
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(function() {
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// TODO(jmesserly): fix dart:html to use unprefixed name
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if (Element.prototype.webkitCreateShadowRoot) {
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Element.prototype.webkitCreateShadowRoot = function() {
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return window.ShadowDOMPolyfill.wrapIfNeeded(this).createShadowRoot();
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};
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}
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})();
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// Copyright 2012 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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(function(global) {
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'use strict';
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var PROP_ADD_TYPE = 'add';
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var PROP_UPDATE_TYPE = 'update';
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var PROP_RECONFIGURE_TYPE = 'reconfigure';
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var PROP_DELETE_TYPE = 'delete';
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var ARRAY_SPLICE_TYPE = 'splice';
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// Detect and do basic sanity checking on Object/Array.observe.
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function detectObjectObserve() {
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if (typeof Object.observe !== 'function' ||
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typeof Array.observe !== 'function') {
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return false;
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}
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var records = [];
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function callback(recs) {
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records = recs;
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}
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var test = {};
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Object.observe(test, callback);
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test.id = 1;
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test.id = 2;
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delete test.id;
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Object.deliverChangeRecords(callback);
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if (records.length !== 3)
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return false;
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// TODO(rafaelw): Remove this when new change record type names make it to
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// chrome release.
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if (records[0].type == 'new' &&
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records[1].type == 'updated' &&
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records[2].type == 'deleted') {
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PROP_ADD_TYPE = 'new';
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PROP_UPDATE_TYPE = 'updated';
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PROP_RECONFIGURE_TYPE = 'reconfigured';
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PROP_DELETE_TYPE = 'deleted';
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} else if (records[0].type != 'add' ||
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records[1].type != 'update' ||
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records[2].type != 'delete') {
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console.error('Unexpected change record names for Object.observe. ' +
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'Using dirty-checking instead');
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return false;
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}
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Object.unobserve(test, callback);
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test = [0];
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Array.observe(test, callback);
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test[1] = 1;
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test.length = 0;
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Object.deliverChangeRecords(callback);
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if (records.length != 2)
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return false;
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if (records[0].type != ARRAY_SPLICE_TYPE ||
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records[1].type != ARRAY_SPLICE_TYPE) {
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return false;
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}
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Array.unobserve(test, callback);
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return true;
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}
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var hasObserve = detectObjectObserve();
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function detectEval() {
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// don't test for eval if document has CSP securityPolicy object and we can see that
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// eval is not supported. This avoids an error message in console even when the exception
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// is caught
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if (global.document &&
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'securityPolicy' in global.document &&
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!global.document.securityPolicy.allowsEval) {
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return false;
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}
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try {
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var f = new Function('', 'return true;');
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return f();
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} catch (ex) {
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return false;
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}
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}
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var hasEval = detectEval();
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function isIndex(s) {
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return +s === s >>> 0;
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}
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function toNumber(s) {
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return +s;
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}
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function isObject(obj) {
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return obj === Object(obj);
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}
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var numberIsNaN = global.Number.isNaN || function isNaN(value) {
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return typeof value === 'number' && global.isNaN(value);
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}
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function areSameValue(left, right) {
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if (left === right)
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return left !== 0 || 1 / left === 1 / right;
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if (numberIsNaN(left) && numberIsNaN(right))
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return true;
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return left !== left && right !== right;
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}
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var createObject = ('__proto__' in {}) ?
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function(obj) { return obj; } :
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function(obj) {
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var proto = obj.__proto__;
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if (!proto)
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return obj;
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var newObject = Object.create(proto);
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Object.getOwnPropertyNames(obj).forEach(function(name) {
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Object.defineProperty(newObject, name,
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Object.getOwnPropertyDescriptor(obj, name));
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});
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return newObject;
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};
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var identStart = '[\$_a-zA-Z]';
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var identPart = '[\$_a-zA-Z0-9]';
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var ident = identStart + '+' + identPart + '*';
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var elementIndex = '(?:[0-9]|[1-9]+[0-9]+)';
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var identOrElementIndex = '(?:' + ident + '|' + elementIndex + ')';
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var path = '(?:' + identOrElementIndex + ')(?:\\s*\\.\\s*' + identOrElementIndex + ')*';
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var pathRegExp = new RegExp('^' + path + '$');
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function isPathValid(s) {
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if (typeof s != 'string')
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return false;
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s = s.trim();
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if (s == '')
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return true;
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if (s[0] == '.')
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return false;
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return pathRegExp.test(s);
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}
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var constructorIsPrivate = {};
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function Path(s, privateToken) {
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if (privateToken !== constructorIsPrivate)
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throw Error('Use Path.get to retrieve path objects');
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if (s.trim() == '')
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return this;
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if (isIndex(s)) {
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this.push(s);
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return this;
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}
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s.split(/\s*\.\s*/).filter(function(part) {
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return part;
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}).forEach(function(part) {
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this.push(part);
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}, this);
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if (hasEval && !hasObserve && this.length) {
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this.getValueFrom = this.compiledGetValueFromFn();
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}
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}
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// TODO(rafaelw): Make simple LRU cache
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var pathCache = {};
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function getPath(pathString) {
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if (pathString instanceof Path)
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return pathString;
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if (pathString == null)
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pathString = '';
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if (typeof pathString !== 'string')
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pathString = String(pathString);
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var path = pathCache[pathString];
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if (path)
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return path;
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if (!isPathValid(pathString))
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return invalidPath;
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var path = new Path(pathString, constructorIsPrivate);
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pathCache[pathString] = path;
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return path;
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}
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Path.get = getPath;
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Path.prototype = createObject({
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__proto__: [],
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valid: true,
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toString: function() {
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return this.join('.');
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},
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getValueFrom: function(obj, observedSet) {
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for (var i = 0; i < this.length; i++) {
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if (obj == null)
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return;
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if (observedSet)
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observedSet.observe(obj);
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obj = obj[this[i]];
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}
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return obj;
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},
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compiledGetValueFromFn: function() {
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var accessors = this.map(function(ident) {
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return isIndex(ident) ? '["' + ident + '"]' : '.' + ident;
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});
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var str = '';
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var pathString = 'obj';
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str += 'if (obj != null';
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var i = 0;
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for (; i < (this.length - 1); i++) {
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var ident = this[i];
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pathString += accessors[i];
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str += ' &&\n ' + pathString + ' != null';
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}
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str += ')\n';
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pathString += accessors[i];
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str += ' return ' + pathString + ';\nelse\n return undefined;';
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return new Function('obj', str);
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},
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setValueFrom: function(obj, value) {
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if (!this.length)
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return false;
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for (var i = 0; i < this.length - 1; i++) {
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if (!isObject(obj))
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return false;
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obj = obj[this[i]];
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}
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if (!isObject(obj))
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return false;
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obj[this[i]] = value;
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return true;
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}
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});
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var invalidPath = new Path('', constructorIsPrivate);
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invalidPath.valid = false;
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invalidPath.getValueFrom = invalidPath.setValueFrom = function() {};
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var MAX_DIRTY_CHECK_CYCLES = 1000;
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function dirtyCheck(observer) {
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var cycles = 0;
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while (cycles < MAX_DIRTY_CHECK_CYCLES && observer.check()) {
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observer.report();
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cycles++;
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}
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if (global.testingExposeCycleCount)
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global.dirtyCheckCycleCount = cycles;
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}
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function objectIsEmpty(object) {
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for (var prop in object)
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return false;
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return true;
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}
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function diffIsEmpty(diff) {
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return objectIsEmpty(diff.added) &&
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objectIsEmpty(diff.removed) &&
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objectIsEmpty(diff.changed);
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}
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function diffObjectFromOldObject(object, oldObject) {
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var added = {};
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var removed = {};
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var changed = {};
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var oldObjectHas = {};
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for (var prop in oldObject) {
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var newValue = object[prop];
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if (newValue !== undefined && newValue === oldObject[prop])
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continue;
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if (!(prop in object)) {
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removed[prop] = undefined;
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continue;
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}
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if (newValue !== oldObject[prop])
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changed[prop] = newValue;
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}
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for (var prop in object) {
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if (prop in oldObject)
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continue;
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added[prop] = object[prop];
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}
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if (Array.isArray(object) && object.length !== oldObject.length)
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changed.length = object.length;
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return {
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added: added,
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removed: removed,
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changed: changed
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};
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}
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function copyObject(object, opt_copy) {
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var copy = opt_copy || (Array.isArray(object) ? [] : {});
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for (var prop in object) {
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copy[prop] = object[prop];
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};
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if (Array.isArray(object))
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copy.length = object.length;
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return copy;
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}
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function Observer(object, callback, target, token) {
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this.closed = false;
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this.object = object;
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this.callback = callback;
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// TODO(rafaelw): Hold this.target weakly when WeakRef is available.
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this.target = target;
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this.token = token;
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this.reporting = true;
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if (hasObserve) {
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var self = this;
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this.boundInternalCallback = function(records) {
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self.internalCallback(records);
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};
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}
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addToAll(this);
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}
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Observer.prototype = {
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internalCallback: function(records) {
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if (this.closed)
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return;
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if (this.reporting && this.check(records)) {
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this.report();
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if (this.testingResults)
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this.testingResults.anyChanged = true;
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}
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},
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close: function() {
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if (this.closed)
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return;
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if (this.object && typeof this.object.close === 'function')
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this.object.close();
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this.disconnect();
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this.object = undefined;
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this.closed = true;
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},
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deliver: function(testingResults) {
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if (this.closed)
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return;
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if (hasObserve) {
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this.testingResults = testingResults;
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Object.deliverChangeRecords(this.boundInternalCallback);
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this.testingResults = undefined;
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} else {
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dirtyCheck(this);
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}
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},
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report: function() {
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if (!this.reporting)
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return;
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this.sync(false);
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if (this.callback) {
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this.reportArgs.push(this.token);
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this.invokeCallback(this.reportArgs);
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}
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this.reportArgs = undefined;
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},
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invokeCallback: function(args) {
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try {
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this.callback.apply(this.target, args);
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} catch (ex) {
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Observer._errorThrownDuringCallback = true;
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console.error('Exception caught during observer callback: ' + (ex.stack || ex));
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}
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},
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reset: function() {
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if (this.closed)
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return;
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|
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if (hasObserve) {
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this.reporting = false;
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Object.deliverChangeRecords(this.boundInternalCallback);
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this.reporting = true;
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}
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this.sync(true);
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}
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}
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var collectObservers = !hasObserve || global.forceCollectObservers;
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var allObservers;
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Observer._allObserversCount = 0;
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if (collectObservers) {
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allObservers = [];
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}
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function addToAll(observer) {
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if (!collectObservers)
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return;
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allObservers.push(observer);
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Observer._allObserversCount++;
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}
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|
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var runningMicrotaskCheckpoint = false;
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|
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var hasDebugForceFullDelivery = typeof Object.deliverAllChangeRecords == 'function';
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|
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global.Platform = global.Platform || {};
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|
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global.Platform.performMicrotaskCheckpoint = function() {
|
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if (runningMicrotaskCheckpoint)
|
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return;
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|
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if (hasDebugForceFullDelivery) {
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Object.deliverAllChangeRecords();
|
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return;
|
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}
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|
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if (!collectObservers)
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return;
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|
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runningMicrotaskCheckpoint = true;
|
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|
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var cycles = 0;
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var results = {};
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do {
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cycles++;
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var toCheck = allObservers;
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allObservers = [];
|
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results.anyChanged = false;
|
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|
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for (var i = 0; i < toCheck.length; i++) {
|
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var observer = toCheck[i];
|
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if (observer.closed)
|
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continue;
|
|
|
|
if (hasObserve) {
|
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observer.deliver(results);
|
|
} else if (observer.check()) {
|
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results.anyChanged = true;
|
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observer.report();
|
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}
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|
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allObservers.push(observer);
|
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}
|
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} while (cycles < MAX_DIRTY_CHECK_CYCLES && results.anyChanged);
|
|
|
|
if (global.testingExposeCycleCount)
|
|
global.dirtyCheckCycleCount = cycles;
|
|
|
|
Observer._allObserversCount = allObservers.length;
|
|
runningMicrotaskCheckpoint = false;
|
|
};
|
|
|
|
if (collectObservers) {
|
|
global.Platform.clearObservers = function() {
|
|
allObservers = [];
|
|
};
|
|
}
|
|
|
|
function ObjectObserver(object, callback, target, token) {
|
|
Observer.call(this, object, callback, target, token);
|
|
this.connect();
|
|
this.sync(true);
|
|
}
|
|
|
|
ObjectObserver.prototype = createObject({
|
|
__proto__: Observer.prototype,
|
|
|
|
connect: function() {
|
|
if (hasObserve)
|
|
Object.observe(this.object, this.boundInternalCallback);
|
|
},
|
|
|
|
sync: function(hard) {
|
|
if (!hasObserve)
|
|
this.oldObject = copyObject(this.object);
|
|
},
|
|
|
|
check: function(changeRecords) {
|
|
var diff;
|
|
var oldValues;
|
|
if (hasObserve) {
|
|
if (!changeRecords)
|
|
return false;
|
|
|
|
oldValues = {};
|
|
diff = diffObjectFromChangeRecords(this.object, changeRecords,
|
|
oldValues);
|
|
} else {
|
|
oldValues = this.oldObject;
|
|
diff = diffObjectFromOldObject(this.object, this.oldObject);
|
|
}
|
|
|
|
if (diffIsEmpty(diff))
|
|
return false;
|
|
|
|
this.reportArgs =
|
|
[diff.added || {}, diff.removed || {}, diff.changed || {}];
|
|
this.reportArgs.push(function(property) {
|
|
return oldValues[property];
|
|
});
|
|
|
|
return true;
|
|
},
|
|
|
|
disconnect: function() {
|
|
if (!hasObserve)
|
|
this.oldObject = undefined;
|
|
else if (this.object)
|
|
Object.unobserve(this.object, this.boundInternalCallback);
|
|
}
|
|
});
|
|
|
|
function ArrayObserver(array, callback, target, token) {
|
|
if (!Array.isArray(array))
|
|
throw Error('Provided object is not an Array');
|
|
ObjectObserver.call(this, array, callback, target, token);
|
|
}
|
|
|
|
ArrayObserver.prototype = createObject({
|
|
__proto__: ObjectObserver.prototype,
|
|
|
|
connect: function() {
|
|
if (hasObserve)
|
|
Array.observe(this.object, this.boundInternalCallback);
|
|
},
|
|
|
|
sync: function() {
|
|
if (!hasObserve)
|
|
this.oldObject = this.object.slice();
|
|
},
|
|
|
|
check: function(changeRecords) {
|
|
var splices;
|
|
if (hasObserve) {
|
|
if (!changeRecords)
|
|
return false;
|
|
splices = projectArraySplices(this.object, changeRecords);
|
|
} else {
|
|
splices = calcSplices(this.object, 0, this.object.length,
|
|
this.oldObject, 0, this.oldObject.length);
|
|
}
|
|
|
|
if (!splices || !splices.length)
|
|
return false;
|
|
|
|
this.reportArgs = [splices];
|
|
return true;
|
|
}
|
|
});
|
|
|
|
ArrayObserver.applySplices = function(previous, current, splices) {
|
|
splices.forEach(function(splice) {
|
|
var spliceArgs = [splice.index, splice.removed.length];
|
|
var addIndex = splice.index;
|
|
while (addIndex < splice.index + splice.addedCount) {
|
|
spliceArgs.push(current[addIndex]);
|
|
addIndex++;
|
|
}
|
|
|
|
Array.prototype.splice.apply(previous, spliceArgs);
|
|
});
|
|
};
|
|
|
|
function ObservedSet(callback) {
|
|
this.arr = [];
|
|
this.callback = callback;
|
|
this.isObserved = true;
|
|
}
|
|
|
|
// TODO(rafaelw): Consider surfacing a way to avoid observing prototype
|
|
// ancestors which are expected not to change (e.g. Element, Node...).
|
|
var objProto = Object.getPrototypeOf({});
|
|
var arrayProto = Object.getPrototypeOf([]);
|
|
ObservedSet.prototype = {
|
|
reset: function() {
|
|
this.isObserved = !this.isObserved;
|
|
},
|
|
|
|
observe: function(obj) {
|
|
if (!isObject(obj) || obj === objProto || obj === arrayProto)
|
|
return;
|
|
var i = this.arr.indexOf(obj);
|
|
if (i >= 0 && this.arr[i+1] === this.isObserved)
|
|
return;
|
|
|
|
if (i < 0) {
|
|
i = this.arr.length;
|
|
this.arr[i] = obj;
|
|
Object.observe(obj, this.callback);
|
|
}
|
|
|
|
this.arr[i+1] = this.isObserved;
|
|
this.observe(Object.getPrototypeOf(obj));
|
|
},
|
|
|
|
cleanup: function() {
|
|
var i = 0, j = 0;
|
|
var isObserved = this.isObserved;
|
|
while(j < this.arr.length) {
|
|
var obj = this.arr[j];
|
|
if (this.arr[j + 1] == isObserved) {
|
|
if (i < j) {
|
|
this.arr[i] = obj;
|
|
this.arr[i + 1] = isObserved;
|
|
}
|
|
i += 2;
|
|
} else {
|
|
Object.unobserve(obj, this.callback);
|
|
}
|
|
j += 2;
|
|
}
|
|
|
|
this.arr.length = i;
|
|
}
|
|
};
|
|
|
|
function PathObserver(object, path, callback, target, token, valueFn,
|
|
setValueFn) {
|
|
var path = path instanceof Path ? path : getPath(path);
|
|
if (!path || !path.length || !isObject(object)) {
|
|
this.value_ = path ? path.getValueFrom(object) : undefined;
|
|
this.value = valueFn ? valueFn(this.value_) : this.value_;
|
|
this.closed = true;
|
|
return;
|
|
}
|
|
|
|
Observer.call(this, object, callback, target, token);
|
|
this.valueFn = valueFn;
|
|
this.setValueFn = setValueFn;
|
|
this.path = path;
|
|
|
|
this.connect();
|
|
this.sync(true);
|
|
}
|
|
|
|
PathObserver.prototype = createObject({
|
|
__proto__: Observer.prototype,
|
|
|
|
connect: function() {
|
|
if (hasObserve)
|
|
this.observedSet = new ObservedSet(this.boundInternalCallback);
|
|
},
|
|
|
|
disconnect: function() {
|
|
this.value = undefined;
|
|
this.value_ = undefined;
|
|
if (this.observedSet) {
|
|
this.observedSet.reset();
|
|
this.observedSet.cleanup();
|
|
this.observedSet = undefined;
|
|
}
|
|
},
|
|
|
|
check: function() {
|
|
// Note: Extracting this to a member function for use here and below
|
|
// regresses dirty-checking path perf by about 25% =-(.
|
|
if (this.observedSet)
|
|
this.observedSet.reset();
|
|
|
|
this.value_ = this.path.getValueFrom(this.object, this.observedSet);
|
|
|
|
if (this.observedSet)
|
|
this.observedSet.cleanup();
|
|
|
|
if (areSameValue(this.value_, this.oldValue_))
|
|
return false;
|
|
|
|
this.value = this.valueFn ? this.valueFn(this.value_) : this.value_;
|
|
this.reportArgs = [this.value, this.oldValue];
|
|
return true;
|
|
},
|
|
|
|
sync: function(hard) {
|
|
if (hard) {
|
|
if (this.observedSet)
|
|
this.observedSet.reset();
|
|
|
|
this.value_ = this.path.getValueFrom(this.object, this.observedSet);
|
|
this.value = this.valueFn ? this.valueFn(this.value_) : this.value_;
|
|
|
|
if (this.observedSet)
|
|
this.observedSet.cleanup();
|
|
}
|
|
|
|
this.oldValue_ = this.value_;
|
|
this.oldValue = this.value;
|
|
},
|
|
|
|
setValue: function(newValue) {
|
|
if (!this.path)
|
|
return;
|
|
if (typeof this.setValueFn === 'function')
|
|
newValue = this.setValueFn(newValue);
|
|
this.path.setValueFrom(this.object, newValue);
|
|
}
|
|
});
|
|
|
|
function CompoundPathObserver(callback, target, token, valueFn) {
|
|
Observer.call(this, undefined, callback, target, token);
|
|
this.valueFn = valueFn;
|
|
|
|
this.observed = [];
|
|
this.values = [];
|
|
this.value = undefined;
|
|
this.oldValue = undefined;
|
|
this.oldValues = undefined;
|
|
this.changeFlags = undefined;
|
|
this.started = false;
|
|
}
|
|
|
|
CompoundPathObserver.prototype = createObject({
|
|
__proto__: PathObserver.prototype,
|
|
|
|
// TODO(rafaelw): Consider special-casing when |object| is a PathObserver
|
|
// and path 'value' to avoid explicit observation.
|
|
addPath: function(object, path) {
|
|
if (this.started)
|
|
throw Error('Cannot add more paths once started.');
|
|
|
|
var path = path instanceof Path ? path : getPath(path);
|
|
var value = path ? path.getValueFrom(object) : undefined;
|
|
|
|
this.observed.push(object, path);
|
|
this.values.push(value);
|
|
},
|
|
|
|
start: function() {
|
|
this.started = true;
|
|
this.connect();
|
|
this.sync(true);
|
|
},
|
|
|
|
getValues: function() {
|
|
if (this.observedSet)
|
|
this.observedSet.reset();
|
|
|
|
var anyChanged = false;
|
|
for (var i = 0; i < this.observed.length; i = i+2) {
|
|
var path = this.observed[i+1];
|
|
if (!path)
|
|
continue;
|
|
var object = this.observed[i];
|
|
var value = path.getValueFrom(object, this.observedSet);
|
|
var oldValue = this.values[i/2];
|
|
if (!areSameValue(value, oldValue)) {
|
|
if (!anyChanged && !this.valueFn) {
|
|
this.oldValues = this.oldValues || [];
|
|
this.changeFlags = this.changeFlags || [];
|
|
for (var j = 0; j < this.values.length; j++) {
|
|
this.oldValues[j] = this.values[j];
|
|
this.changeFlags[j] = false;
|
|
}
|
|
}
|
|
|
|
if (!this.valueFn)
|
|
this.changeFlags[i/2] = true;
|
|
|
|
this.values[i/2] = value;
|
|
anyChanged = true;
|
|
}
|
|
}
|
|
|
|
if (this.observedSet)
|
|
this.observedSet.cleanup();
|
|
|
|
return anyChanged;
|
|
},
|
|
|
|
check: function() {
|
|
if (!this.getValues())
|
|
return;
|
|
|
|
if (this.valueFn) {
|
|
this.value = this.valueFn(this.values);
|
|
|
|
if (areSameValue(this.value, this.oldValue))
|
|
return false;
|
|
|
|
this.reportArgs = [this.value, this.oldValue];
|
|
} else {
|
|
this.reportArgs = [this.values, this.oldValues, this.changeFlags,
|
|
this.observed];
|
|
}
|
|
|
|
return true;
|
|
},
|
|
|
|
sync: function(hard) {
|
|
if (hard) {
|
|
this.getValues();
|
|
if (this.valueFn)
|
|
this.value = this.valueFn(this.values);
|
|
}
|
|
|
|
if (this.valueFn)
|
|
this.oldValue = this.value;
|
|
},
|
|
|
|
close: function() {
|
|
if (this.observed) {
|
|
for (var i = 0; i < this.observed.length; i = i + 2) {
|
|
var object = this.observed[i];
|
|
if (object && typeof object.close === 'function')
|
|
object.close();
|
|
}
|
|
this.observed = undefined;
|
|
this.values = undefined;
|
|
}
|
|
|
|
Observer.prototype.close.call(this);
|
|
}
|
|
});
|
|
|
|
var expectedRecordTypes = {};
|
|
expectedRecordTypes[PROP_ADD_TYPE] = true;
|
|
expectedRecordTypes[PROP_UPDATE_TYPE] = true;
|
|
expectedRecordTypes[PROP_DELETE_TYPE] = true;
|
|
|
|
function notifyFunction(object, name) {
|
|
if (typeof Object.observe !== 'function')
|
|
return;
|
|
|
|
var notifier = Object.getNotifier(object);
|
|
return function(type, oldValue) {
|
|
var changeRecord = {
|
|
object: object,
|
|
type: type,
|
|
name: name
|
|
};
|
|
if (arguments.length === 2)
|
|
changeRecord.oldValue = oldValue;
|
|
notifier.notify(changeRecord);
|
|
}
|
|
}
|
|
|
|
// TODO(rafaelw): It should be possible for the Object.observe case to have
|
|
// every PathObserver used by defineProperty share a single Object.observe
|
|
// callback, and thus get() can simply call observer.deliver() and any changes
|
|
// to any dependent value will be observed.
|
|
PathObserver.defineProperty = function(target, name, object, path) {
|
|
// TODO(rafaelw): Validate errors
|
|
path = getPath(path);
|
|
var notify = notifyFunction(target, name);
|
|
|
|
var observer = new PathObserver(object, path,
|
|
function(newValue, oldValue) {
|
|
if (notify)
|
|
notify(PROP_UPDATE_TYPE, oldValue);
|
|
}
|
|
);
|
|
|
|
Object.defineProperty(target, name, {
|
|
get: function() {
|
|
return path.getValueFrom(object);
|
|
},
|
|
set: function(newValue) {
|
|
path.setValueFrom(object, newValue);
|
|
},
|
|
configurable: true
|
|
});
|
|
|
|
return {
|
|
close: function() {
|
|
var oldValue = path.getValueFrom(object);
|
|
if (notify)
|
|
observer.deliver();
|
|
observer.close();
|
|
Object.defineProperty(target, name, {
|
|
value: oldValue,
|
|
writable: true,
|
|
configurable: true
|
|
});
|
|
}
|
|
};
|
|
}
|
|
|
|
function diffObjectFromChangeRecords(object, changeRecords, oldValues) {
|
|
var added = {};
|
|
var removed = {};
|
|
|
|
for (var i = 0; i < changeRecords.length; i++) {
|
|
var record = changeRecords[i];
|
|
if (!expectedRecordTypes[record.type]) {
|
|
console.error('Unknown changeRecord type: ' + record.type);
|
|
console.error(record);
|
|
continue;
|
|
}
|
|
|
|
if (!(record.name in oldValues))
|
|
oldValues[record.name] = record.oldValue;
|
|
|
|
if (record.type == PROP_UPDATE_TYPE)
|
|
continue;
|
|
|
|
if (record.type == PROP_ADD_TYPE) {
|
|
if (record.name in removed)
|
|
delete removed[record.name];
|
|
else
|
|
added[record.name] = true;
|
|
|
|
continue;
|
|
}
|
|
|
|
// type = 'delete'
|
|
if (record.name in added) {
|
|
delete added[record.name];
|
|
delete oldValues[record.name];
|
|
} else {
|
|
removed[record.name] = true;
|
|
}
|
|
}
|
|
|
|
for (var prop in added)
|
|
added[prop] = object[prop];
|
|
|
|
for (var prop in removed)
|
|
removed[prop] = undefined;
|
|
|
|
var changed = {};
|
|
for (var prop in oldValues) {
|
|
if (prop in added || prop in removed)
|
|
continue;
|
|
|
|
var newValue = object[prop];
|
|
if (oldValues[prop] !== newValue)
|
|
changed[prop] = newValue;
|
|
}
|
|
|
|
return {
|
|
added: added,
|
|
removed: removed,
|
|
changed: changed
|
|
};
|
|
}
|
|
|
|
function newSplice(index, removed, addedCount) {
|
|
return {
|
|
index: index,
|
|
removed: removed,
|
|
addedCount: addedCount
|
|
};
|
|
}
|
|
|
|
var EDIT_LEAVE = 0;
|
|
var EDIT_UPDATE = 1;
|
|
var EDIT_ADD = 2;
|
|
var EDIT_DELETE = 3;
|
|
|
|
function ArraySplice() {}
|
|
|
|
ArraySplice.prototype = {
|
|
|
|
// Note: This function is *based* on the computation of the Levenshtein
|
|
// "edit" distance. The one change is that "updates" are treated as two
|
|
// edits - not one. With Array splices, an update is really a delete
|
|
// followed by an add. By retaining this, we optimize for "keeping" the
|
|
// maximum array items in the original array. For example:
|
|
//
|
|
// 'xxxx123' -> '123yyyy'
|
|
//
|
|
// With 1-edit updates, the shortest path would be just to update all seven
|
|
// characters. With 2-edit updates, we delete 4, leave 3, and add 4. This
|
|
// leaves the substring '123' intact.
|
|
calcEditDistances: function(current, currentStart, currentEnd,
|
|
old, oldStart, oldEnd) {
|
|
// "Deletion" columns
|
|
var rowCount = oldEnd - oldStart + 1;
|
|
var columnCount = currentEnd - currentStart + 1;
|
|
var distances = new Array(rowCount);
|
|
|
|
// "Addition" rows. Initialize null column.
|
|
for (var i = 0; i < rowCount; i++) {
|
|
distances[i] = new Array(columnCount);
|
|
distances[i][0] = i;
|
|
}
|
|
|
|
// Initialize null row
|
|
for (var j = 0; j < columnCount; j++)
|
|
distances[0][j] = j;
|
|
|
|
for (var i = 1; i < rowCount; i++) {
|
|
for (var j = 1; j < columnCount; j++) {
|
|
if (this.equals(current[currentStart + j - 1], old[oldStart + i - 1]))
|
|
distances[i][j] = distances[i - 1][j - 1];
|
|
else {
|
|
var north = distances[i - 1][j] + 1;
|
|
var west = distances[i][j - 1] + 1;
|
|
distances[i][j] = north < west ? north : west;
|
|
}
|
|
}
|
|
}
|
|
|
|
return distances;
|
|
},
|
|
|
|
// This starts at the final weight, and walks "backward" by finding
|
|
// the minimum previous weight recursively until the origin of the weight
|
|
// matrix.
|
|
spliceOperationsFromEditDistances: function(distances) {
|
|
var i = distances.length - 1;
|
|
var j = distances[0].length - 1;
|
|
var current = distances[i][j];
|
|
var edits = [];
|
|
while (i > 0 || j > 0) {
|
|
if (i == 0) {
|
|
edits.push(EDIT_ADD);
|
|
j--;
|
|
continue;
|
|
}
|
|
if (j == 0) {
|
|
edits.push(EDIT_DELETE);
|
|
i--;
|
|
continue;
|
|
}
|
|
var northWest = distances[i - 1][j - 1];
|
|
var west = distances[i - 1][j];
|
|
var north = distances[i][j - 1];
|
|
|
|
var min;
|
|
if (west < north)
|
|
min = west < northWest ? west : northWest;
|
|
else
|
|
min = north < northWest ? north : northWest;
|
|
|
|
if (min == northWest) {
|
|
if (northWest == current) {
|
|
edits.push(EDIT_LEAVE);
|
|
} else {
|
|
edits.push(EDIT_UPDATE);
|
|
current = northWest;
|
|
}
|
|
i--;
|
|
j--;
|
|
} else if (min == west) {
|
|
edits.push(EDIT_DELETE);
|
|
i--;
|
|
current = west;
|
|
} else {
|
|
edits.push(EDIT_ADD);
|
|
j--;
|
|
current = north;
|
|
}
|
|
}
|
|
|
|
edits.reverse();
|
|
return edits;
|
|
},
|
|
|
|
/**
|
|
* Splice Projection functions:
|
|
*
|
|
* A splice map is a representation of how a previous array of items
|
|
* was transformed into a new array of items. Conceptually it is a list of
|
|
* tuples of
|
|
*
|
|
* <index, removed, addedCount>
|
|
*
|
|
* which are kept in ascending index order of. The tuple represents that at
|
|
* the |index|, |removed| sequence of items were removed, and counting forward
|
|
* from |index|, |addedCount| items were added.
|
|
*/
|
|
|
|
/**
|
|
* Lacking individual splice mutation information, the minimal set of
|
|
* splices can be synthesized given the previous state and final state of an
|
|
* array. The basic approach is to calculate the edit distance matrix and
|
|
* choose the shortest path through it.
|
|
*
|
|
* Complexity: O(l * p)
|
|
* l: The length of the current array
|
|
* p: The length of the old array
|
|
*/
|
|
calcSplices: function(current, currentStart, currentEnd,
|
|
old, oldStart, oldEnd) {
|
|
var prefixCount = 0;
|
|
var suffixCount = 0;
|
|
|
|
var minLength = Math.min(currentEnd - currentStart, oldEnd - oldStart);
|
|
if (currentStart == 0 && oldStart == 0)
|
|
prefixCount = this.sharedPrefix(current, old, minLength);
|
|
|
|
if (currentEnd == current.length && oldEnd == old.length)
|
|
suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);
|
|
|
|
currentStart += prefixCount;
|
|
oldStart += prefixCount;
|
|
currentEnd -= suffixCount;
|
|
oldEnd -= suffixCount;
|
|
|
|
if (currentEnd - currentStart == 0 && oldEnd - oldStart == 0)
|
|
return [];
|
|
|
|
if (currentStart == currentEnd) {
|
|
var splice = newSplice(currentStart, [], 0);
|
|
while (oldStart < oldEnd)
|
|
splice.removed.push(old[oldStart++]);
|
|
|
|
return [ splice ];
|
|
} else if (oldStart == oldEnd)
|
|
return [ newSplice(currentStart, [], currentEnd - currentStart) ];
|
|
|
|
var ops = this.spliceOperationsFromEditDistances(
|
|
this.calcEditDistances(current, currentStart, currentEnd,
|
|
old, oldStart, oldEnd));
|
|
|
|
var splice = undefined;
|
|
var splices = [];
|
|
var index = currentStart;
|
|
var oldIndex = oldStart;
|
|
for (var i = 0; i < ops.length; i++) {
|
|
switch(ops[i]) {
|
|
case EDIT_LEAVE:
|
|
if (splice) {
|
|
splices.push(splice);
|
|
splice = undefined;
|
|
}
|
|
|
|
index++;
|
|
oldIndex++;
|
|
break;
|
|
case EDIT_UPDATE:
|
|
if (!splice)
|
|
splice = newSplice(index, [], 0);
|
|
|
|
splice.addedCount++;
|
|
index++;
|
|
|
|
splice.removed.push(old[oldIndex]);
|
|
oldIndex++;
|
|
break;
|
|
case EDIT_ADD:
|
|
if (!splice)
|
|
splice = newSplice(index, [], 0);
|
|
|
|
splice.addedCount++;
|
|
index++;
|
|
break;
|
|
case EDIT_DELETE:
|
|
if (!splice)
|
|
splice = newSplice(index, [], 0);
|
|
|
|
splice.removed.push(old[oldIndex]);
|
|
oldIndex++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (splice) {
|
|
splices.push(splice);
|
|
}
|
|
return splices;
|
|
},
|
|
|
|
sharedPrefix: function(current, old, searchLength) {
|
|
for (var i = 0; i < searchLength; i++)
|
|
if (!this.equals(current[i], old[i]))
|
|
return i;
|
|
return searchLength;
|
|
},
|
|
|
|
sharedSuffix: function(current, old, searchLength) {
|
|
var index1 = current.length;
|
|
var index2 = old.length;
|
|
var count = 0;
|
|
while (count < searchLength && this.equals(current[--index1], old[--index2]))
|
|
count++;
|
|
|
|
return count;
|
|
},
|
|
|
|
calculateSplices: function(current, previous) {
|
|
return this.calcSplices(current, 0, current.length, previous, 0,
|
|
previous.length);
|
|
},
|
|
|
|
equals: function(currentValue, previousValue) {
|
|
return currentValue === previousValue;
|
|
}
|
|
};
|
|
|
|
var arraySplice = new ArraySplice();
|
|
|
|
function calcSplices(current, currentStart, currentEnd,
|
|
old, oldStart, oldEnd) {
|
|
return arraySplice.calcSplices(current, currentStart, currentEnd,
|
|
old, oldStart, oldEnd);
|
|
}
|
|
|
|
function intersect(start1, end1, start2, end2) {
|
|
// Disjoint
|
|
if (end1 < start2 || end2 < start1)
|
|
return -1;
|
|
|
|
// Adjacent
|
|
if (end1 == start2 || end2 == start1)
|
|
return 0;
|
|
|
|
// Non-zero intersect, span1 first
|
|
if (start1 < start2) {
|
|
if (end1 < end2)
|
|
return end1 - start2; // Overlap
|
|
else
|
|
return end2 - start2; // Contained
|
|
} else {
|
|
// Non-zero intersect, span2 first
|
|
if (end2 < end1)
|
|
return end2 - start1; // Overlap
|
|
else
|
|
return end1 - start1; // Contained
|
|
}
|
|
}
|
|
|
|
function mergeSplice(splices, index, removed, addedCount) {
|
|
|
|
var splice = newSplice(index, removed, addedCount);
|
|
|
|
var inserted = false;
|
|
var insertionOffset = 0;
|
|
|
|
for (var i = 0; i < splices.length; i++) {
|
|
var current = splices[i];
|
|
current.index += insertionOffset;
|
|
|
|
if (inserted)
|
|
continue;
|
|
|
|
var intersectCount = intersect(splice.index,
|
|
splice.index + splice.removed.length,
|
|
current.index,
|
|
current.index + current.addedCount);
|
|
|
|
if (intersectCount >= 0) {
|
|
// Merge the two splices
|
|
|
|
splices.splice(i, 1);
|
|
i--;
|
|
|
|
insertionOffset -= current.addedCount - current.removed.length;
|
|
|
|
splice.addedCount += current.addedCount - intersectCount;
|
|
var deleteCount = splice.removed.length +
|
|
current.removed.length - intersectCount;
|
|
|
|
if (!splice.addedCount && !deleteCount) {
|
|
// merged splice is a noop. discard.
|
|
inserted = true;
|
|
} else {
|
|
var removed = current.removed;
|
|
|
|
if (splice.index < current.index) {
|
|
// some prefix of splice.removed is prepended to current.removed.
|
|
var prepend = splice.removed.slice(0, current.index - splice.index);
|
|
Array.prototype.push.apply(prepend, removed);
|
|
removed = prepend;
|
|
}
|
|
|
|
if (splice.index + splice.removed.length > current.index + current.addedCount) {
|
|
// some suffix of splice.removed is appended to current.removed.
|
|
var append = splice.removed.slice(current.index + current.addedCount - splice.index);
|
|
Array.prototype.push.apply(removed, append);
|
|
}
|
|
|
|
splice.removed = removed;
|
|
if (current.index < splice.index) {
|
|
splice.index = current.index;
|
|
}
|
|
}
|
|
} else if (splice.index < current.index) {
|
|
// Insert splice here.
|
|
|
|
inserted = true;
|
|
|
|
splices.splice(i, 0, splice);
|
|
i++;
|
|
|
|
var offset = splice.addedCount - splice.removed.length
|
|
current.index += offset;
|
|
insertionOffset += offset;
|
|
}
|
|
}
|
|
|
|
if (!inserted)
|
|
splices.push(splice);
|
|
}
|
|
|
|
function createInitialSplices(array, changeRecords) {
|
|
var splices = [];
|
|
|
|
for (var i = 0; i < changeRecords.length; i++) {
|
|
var record = changeRecords[i];
|
|
switch(record.type) {
|
|
case ARRAY_SPLICE_TYPE:
|
|
mergeSplice(splices, record.index, record.removed.slice(), record.addedCount);
|
|
break;
|
|
case PROP_ADD_TYPE:
|
|
case PROP_UPDATE_TYPE:
|
|
case PROP_DELETE_TYPE:
|
|
if (!isIndex(record.name))
|
|
continue;
|
|
var index = toNumber(record.name);
|
|
if (index < 0)
|
|
continue;
|
|
mergeSplice(splices, index, [record.oldValue], 1);
|
|
break;
|
|
default:
|
|
console.error('Unexpected record type: ' + JSON.stringify(record));
|
|
break;
|
|
}
|
|
}
|
|
|
|
return splices;
|
|
}
|
|
|
|
function projectArraySplices(array, changeRecords) {
|
|
var splices = [];
|
|
|
|
createInitialSplices(array, changeRecords).forEach(function(splice) {
|
|
if (splice.addedCount == 1 && splice.removed.length == 1) {
|
|
if (splice.removed[0] !== array[splice.index])
|
|
splices.push(splice);
|
|
|
|
return
|
|
};
|
|
|
|
splices = splices.concat(calcSplices(array, splice.index, splice.index + splice.addedCount,
|
|
splice.removed, 0, splice.removed.length));
|
|
});
|
|
|
|
return splices;
|
|
}
|
|
|
|
global.Observer = Observer;
|
|
global.Observer.hasObjectObserve = hasObserve;
|
|
global.ArrayObserver = ArrayObserver;
|
|
global.ArrayObserver.calculateSplices = function(current, previous) {
|
|
return arraySplice.calculateSplices(current, previous);
|
|
};
|
|
|
|
global.ArraySplice = ArraySplice;
|
|
global.ObjectObserver = ObjectObserver;
|
|
global.PathObserver = PathObserver;
|
|
global.CompoundPathObserver = CompoundPathObserver;
|
|
global.Path = Path;
|
|
|
|
// TODO(rafaelw): Only needed for testing until new change record names
|
|
// make it to release.
|
|
global.Observer.changeRecordTypes = {
|
|
add: PROP_ADD_TYPE,
|
|
update: PROP_UPDATE_TYPE,
|
|
reconfigure: PROP_RECONFIGURE_TYPE,
|
|
'delete': PROP_DELETE_TYPE,
|
|
splice: ARRAY_SPLICE_TYPE
|
|
};
|
|
})(typeof global !== 'undefined' && global ? global : this || window);
|
|
|
|
/*
|
|
* Copyright 2012 The Polymer Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style
|
|
* license that can be found in the LICENSE file.
|
|
*/
|
|
|
|
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});
|
|
},
|
|
get: function(key) {
|
|
var entry;
|
|
return (entry = key[this.name]) && entry[0] === key ?
|
|
entry[1] : undefined;
|
|
},
|
|
delete: function(key) {
|
|
this.set(key, undefined);
|
|
}
|
|
};
|
|
|
|
window.WeakMap = WeakMap;
|
|
})();
|
|
}
|
|
|
|
// Copyright 2012 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
window.ShadowDOMPolyfill = {};
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var constructorTable = new WeakMap();
|
|
var nativePrototypeTable = new WeakMap();
|
|
var wrappers = Object.create(null);
|
|
|
|
// Don't test for eval if document has CSP securityPolicy object and we can
|
|
// see that eval is not supported. This avoids an error message in console
|
|
// even when the exception is caught
|
|
var hasEval = !('securityPolicy' in document) ||
|
|
document.securityPolicy.allowsEval;
|
|
if (hasEval) {
|
|
try {
|
|
var f = new Function('', 'return true;');
|
|
hasEval = f();
|
|
} catch (ex) {
|
|
hasEval = false;
|
|
}
|
|
}
|
|
|
|
function assert(b) {
|
|
if (!b)
|
|
throw new Error('Assertion failed');
|
|
};
|
|
|
|
var defineProperty = Object.defineProperty;
|
|
var getOwnPropertyNames = Object.getOwnPropertyNames;
|
|
var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
|
|
|
|
function mixin(to, from) {
|
|
getOwnPropertyNames(from).forEach(function(name) {
|
|
defineProperty(to, name, getOwnPropertyDescriptor(from, name));
|
|
});
|
|
return to;
|
|
};
|
|
|
|
function mixinStatics(to, from) {
|
|
getOwnPropertyNames(from).forEach(function(name) {
|
|
switch (name) {
|
|
case 'arguments':
|
|
case 'caller':
|
|
case 'length':
|
|
case 'name':
|
|
case 'prototype':
|
|
case 'toString':
|
|
return;
|
|
}
|
|
defineProperty(to, name, getOwnPropertyDescriptor(from, name));
|
|
});
|
|
return to;
|
|
};
|
|
|
|
function oneOf(object, propertyNames) {
|
|
for (var i = 0; i < propertyNames.length; i++) {
|
|
if (propertyNames[i] in object)
|
|
return propertyNames[i];
|
|
}
|
|
}
|
|
|
|
// Mozilla's old DOM bindings are bretty busted:
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=855844
|
|
// Make sure they are create before we start modifying things.
|
|
getOwnPropertyNames(window);
|
|
|
|
function getWrapperConstructor(node) {
|
|
var nativePrototype = node.__proto__ || Object.getPrototypeOf(node);
|
|
var wrapperConstructor = constructorTable.get(nativePrototype);
|
|
if (wrapperConstructor)
|
|
return wrapperConstructor;
|
|
|
|
var parentWrapperConstructor = getWrapperConstructor(nativePrototype);
|
|
|
|
var GeneratedWrapper = createWrapperConstructor(parentWrapperConstructor);
|
|
registerInternal(nativePrototype, GeneratedWrapper, node);
|
|
|
|
return GeneratedWrapper;
|
|
}
|
|
|
|
function addForwardingProperties(nativePrototype, wrapperPrototype) {
|
|
installProperty(nativePrototype, wrapperPrototype, true);
|
|
}
|
|
|
|
function registerInstanceProperties(wrapperPrototype, instanceObject) {
|
|
installProperty(instanceObject, wrapperPrototype, false);
|
|
}
|
|
|
|
var isFirefox = /Firefox/.test(navigator.userAgent);
|
|
|
|
// This is used as a fallback when getting the descriptor fails in
|
|
// installProperty.
|
|
var dummyDescriptor = {
|
|
get: function() {},
|
|
set: function(v) {},
|
|
configurable: true,
|
|
enumerable: true
|
|
};
|
|
|
|
function isEventHandlerName(name) {
|
|
return /^on[a-z]+$/.test(name);
|
|
}
|
|
|
|
function isIdentifierName(name) {
|
|
return /^\w[a-zA-Z_0-9]*$/.test(name);
|
|
}
|
|
|
|
function getGetter(name) {
|
|
return hasEval && isIdentifierName(name) ?
|
|
new Function('return this.impl.' + name) :
|
|
function() { return this.impl[name]; };
|
|
}
|
|
|
|
function getSetter(name) {
|
|
return hasEval && isIdentifierName(name) ?
|
|
new Function('v', 'this.impl.' + name + ' = v') :
|
|
function(v) { this.impl[name] = v; };
|
|
}
|
|
|
|
function getMethod(name) {
|
|
return hasEval && isIdentifierName(name) ?
|
|
new Function('return this.impl.' + name +
|
|
'.apply(this.impl, arguments)') :
|
|
function() { return this.impl[name].apply(this.impl, arguments); };
|
|
}
|
|
|
|
function getDescriptor(source, name) {
|
|
try {
|
|
return Object.getOwnPropertyDescriptor(source, name);
|
|
} catch (ex) {
|
|
// JSC and V8 both use data properties instead of accessors which can
|
|
// cause getting the property desciptor to throw an exception.
|
|
// https://bugs.webkit.org/show_bug.cgi?id=49739
|
|
return dummyDescriptor;
|
|
}
|
|
}
|
|
|
|
function installProperty(source, target, allowMethod, opt_blacklist) {
|
|
var names = getOwnPropertyNames(source);
|
|
for (var i = 0; i < names.length; i++) {
|
|
var name = names[i];
|
|
if (name === 'polymerBlackList_')
|
|
continue;
|
|
|
|
if (name in target)
|
|
continue;
|
|
|
|
if (source.polymerBlackList_ && source.polymerBlackList_[name])
|
|
continue;
|
|
|
|
if (isFirefox) {
|
|
// Tickle Firefox's old bindings.
|
|
source.__lookupGetter__(name);
|
|
}
|
|
var descriptor = getDescriptor(source, name);
|
|
var getter, setter;
|
|
if (allowMethod && typeof descriptor.value === 'function') {
|
|
target[name] = getMethod(name);
|
|
continue;
|
|
}
|
|
|
|
var isEvent = isEventHandlerName(name);
|
|
if (isEvent)
|
|
getter = scope.getEventHandlerGetter(name);
|
|
else
|
|
getter = getGetter(name);
|
|
|
|
if (descriptor.writable || descriptor.set) {
|
|
if (isEvent)
|
|
setter = scope.getEventHandlerSetter(name);
|
|
else
|
|
setter = getSetter(name);
|
|
}
|
|
|
|
defineProperty(target, name, {
|
|
get: getter,
|
|
set: setter,
|
|
configurable: descriptor.configurable,
|
|
enumerable: descriptor.enumerable
|
|
});
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Function} nativeConstructor
|
|
* @param {Function} wrapperConstructor
|
|
* @param {Object=} opt_instance If present, this is used to extract
|
|
* properties from an instance object.
|
|
*/
|
|
function register(nativeConstructor, wrapperConstructor, opt_instance) {
|
|
var nativePrototype = nativeConstructor.prototype;
|
|
registerInternal(nativePrototype, wrapperConstructor, opt_instance);
|
|
mixinStatics(wrapperConstructor, nativeConstructor);
|
|
}
|
|
|
|
function registerInternal(nativePrototype, wrapperConstructor, opt_instance) {
|
|
var wrapperPrototype = wrapperConstructor.prototype;
|
|
assert(constructorTable.get(nativePrototype) === undefined);
|
|
|
|
constructorTable.set(nativePrototype, wrapperConstructor);
|
|
nativePrototypeTable.set(wrapperPrototype, nativePrototype);
|
|
|
|
addForwardingProperties(nativePrototype, wrapperPrototype);
|
|
if (opt_instance)
|
|
registerInstanceProperties(wrapperPrototype, opt_instance);
|
|
defineProperty(wrapperPrototype, 'constructor', {
|
|
value: wrapperConstructor,
|
|
configurable: true,
|
|
enumerable: false,
|
|
writable: true
|
|
});
|
|
}
|
|
|
|
function isWrapperFor(wrapperConstructor, nativeConstructor) {
|
|
return constructorTable.get(nativeConstructor.prototype) ===
|
|
wrapperConstructor;
|
|
}
|
|
|
|
/**
|
|
* Creates a generic wrapper constructor based on |object| and its
|
|
* constructor.
|
|
* @param {Node} object
|
|
* @return {Function} The generated constructor.
|
|
*/
|
|
function registerObject(object) {
|
|
var nativePrototype = Object.getPrototypeOf(object);
|
|
|
|
var superWrapperConstructor = getWrapperConstructor(nativePrototype);
|
|
var GeneratedWrapper = createWrapperConstructor(superWrapperConstructor);
|
|
registerInternal(nativePrototype, GeneratedWrapper, object);
|
|
|
|
return GeneratedWrapper;
|
|
}
|
|
|
|
function createWrapperConstructor(superWrapperConstructor) {
|
|
function GeneratedWrapper(node) {
|
|
superWrapperConstructor.call(this, node);
|
|
}
|
|
GeneratedWrapper.prototype =
|
|
Object.create(superWrapperConstructor.prototype);
|
|
GeneratedWrapper.prototype.constructor = GeneratedWrapper;
|
|
|
|
return GeneratedWrapper;
|
|
}
|
|
|
|
var OriginalDOMImplementation = window.DOMImplementation;
|
|
var OriginalEvent = window.Event;
|
|
var OriginalNode = window.Node;
|
|
var OriginalWindow = window.Window;
|
|
var OriginalRange = window.Range;
|
|
var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;
|
|
var OriginalWebGLRenderingContext = window.WebGLRenderingContext;
|
|
|
|
function isWrapper(object) {
|
|
return object instanceof wrappers.EventTarget ||
|
|
object instanceof wrappers.Event ||
|
|
object instanceof wrappers.Range ||
|
|
object instanceof wrappers.DOMImplementation ||
|
|
object instanceof wrappers.CanvasRenderingContext2D ||
|
|
wrappers.WebGLRenderingContext &&
|
|
object instanceof wrappers.WebGLRenderingContext;
|
|
}
|
|
|
|
function isNative(object) {
|
|
return object instanceof OriginalNode ||
|
|
object instanceof OriginalEvent ||
|
|
object instanceof OriginalWindow ||
|
|
object instanceof OriginalRange ||
|
|
object instanceof OriginalDOMImplementation ||
|
|
object instanceof OriginalCanvasRenderingContext2D ||
|
|
OriginalWebGLRenderingContext &&
|
|
object instanceof OriginalWebGLRenderingContext;
|
|
}
|
|
|
|
/**
|
|
* Wraps a node in a WrapperNode. If there already exists a wrapper for the
|
|
* |node| that wrapper is returned instead.
|
|
* @param {Node} node
|
|
* @return {WrapperNode}
|
|
*/
|
|
function wrap(impl) {
|
|
if (impl === null)
|
|
return null;
|
|
|
|
assert(isNative(impl));
|
|
return impl.polymerWrapper_ ||
|
|
(impl.polymerWrapper_ = new (getWrapperConstructor(impl))(impl));
|
|
}
|
|
|
|
/**
|
|
* Unwraps a wrapper and returns the node it is wrapping.
|
|
* @param {WrapperNode} wrapper
|
|
* @return {Node}
|
|
*/
|
|
function unwrap(wrapper) {
|
|
if (wrapper === null)
|
|
return null;
|
|
assert(isWrapper(wrapper));
|
|
return wrapper.impl;
|
|
}
|
|
|
|
/**
|
|
* Unwraps object if it is a wrapper.
|
|
* @param {Object} object
|
|
* @return {Object} The native implementation object.
|
|
*/
|
|
function unwrapIfNeeded(object) {
|
|
return object && isWrapper(object) ? unwrap(object) : object;
|
|
}
|
|
|
|
/**
|
|
* Wraps object if it is not a wrapper.
|
|
* @param {Object} object
|
|
* @return {Object} The wrapper for object.
|
|
*/
|
|
function wrapIfNeeded(object) {
|
|
return object && !isWrapper(object) ? wrap(object) : object;
|
|
}
|
|
|
|
/**
|
|
* Overrides the current wrapper (if any) for node.
|
|
* @param {Node} node
|
|
* @param {WrapperNode=} wrapper If left out the wrapper will be created as
|
|
* needed next time someone wraps the node.
|
|
*/
|
|
function rewrap(node, wrapper) {
|
|
if (wrapper === null)
|
|
return;
|
|
assert(isNative(node));
|
|
assert(wrapper === undefined || isWrapper(wrapper));
|
|
node.polymerWrapper_ = wrapper;
|
|
}
|
|
|
|
function defineGetter(constructor, name, getter) {
|
|
defineProperty(constructor.prototype, name, {
|
|
get: getter,
|
|
configurable: true,
|
|
enumerable: true
|
|
});
|
|
}
|
|
|
|
function defineWrapGetter(constructor, name) {
|
|
defineGetter(constructor, name, function() {
|
|
return wrap(this.impl[name]);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Forwards existing methods on the native object to the wrapper methods.
|
|
* This does not wrap any of the arguments or the return value since the
|
|
* wrapper implementation already takes care of that.
|
|
* @param {Array.<Function>} constructors
|
|
* @parem {Array.<string>} names
|
|
*/
|
|
function forwardMethodsToWrapper(constructors, names) {
|
|
constructors.forEach(function(constructor) {
|
|
names.forEach(function(name) {
|
|
constructor.prototype[name] = function() {
|
|
var w = wrapIfNeeded(this);
|
|
return w[name].apply(w, arguments);
|
|
};
|
|
});
|
|
});
|
|
}
|
|
|
|
scope.assert = assert;
|
|
scope.constructorTable = constructorTable;
|
|
scope.defineGetter = defineGetter;
|
|
scope.defineWrapGetter = defineWrapGetter;
|
|
scope.forwardMethodsToWrapper = forwardMethodsToWrapper;
|
|
scope.isWrapperFor = isWrapperFor;
|
|
scope.mixin = mixin;
|
|
scope.nativePrototypeTable = nativePrototypeTable;
|
|
scope.oneOf = oneOf;
|
|
scope.registerObject = registerObject;
|
|
scope.registerWrapper = register;
|
|
scope.rewrap = rewrap;
|
|
scope.unwrap = unwrap;
|
|
scope.unwrapIfNeeded = unwrapIfNeeded;
|
|
scope.wrap = wrap;
|
|
scope.wrapIfNeeded = wrapIfNeeded;
|
|
scope.wrappers = wrappers;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
/*
|
|
* Copyright 2013 The Polymer Authors. All rights reserved.
|
|
* Use of this source code is goverened by a BSD-style
|
|
* license that can be found in the LICENSE file.
|
|
*/
|
|
|
|
(function(context) {
|
|
'use strict';
|
|
|
|
var OriginalMutationObserver = window.MutationObserver;
|
|
var callbacks = [];
|
|
var pending = false;
|
|
var timerFunc;
|
|
|
|
function handle() {
|
|
pending = false;
|
|
var copies = callbacks.slice(0);
|
|
callbacks = [];
|
|
for (var i = 0; i < copies.length; i++) {
|
|
(0, copies[i])();
|
|
}
|
|
}
|
|
|
|
if (OriginalMutationObserver) {
|
|
var counter = 1;
|
|
var observer = new OriginalMutationObserver(handle);
|
|
var textNode = document.createTextNode(counter);
|
|
observer.observe(textNode, {characterData: true});
|
|
|
|
timerFunc = function() {
|
|
counter = (counter + 1) % 2;
|
|
textNode.data = counter;
|
|
};
|
|
|
|
} else {
|
|
timerFunc = window.setImmediate || window.setTimeout;
|
|
}
|
|
|
|
function setEndOfMicrotask(func) {
|
|
callbacks.push(func);
|
|
if (pending)
|
|
return;
|
|
pending = true;
|
|
timerFunc(handle, 0);
|
|
}
|
|
|
|
context.setEndOfMicrotask = setEndOfMicrotask;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
/*
|
|
* Copyright 2013 The Polymer Authors. All rights reserved.
|
|
* Use of this source code is goverened by a BSD-style
|
|
* license that can be found in the LICENSE file.
|
|
*/
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var setEndOfMicrotask = scope.setEndOfMicrotask
|
|
var wrapIfNeeded = scope.wrapIfNeeded
|
|
var wrappers = scope.wrappers;
|
|
|
|
var registrationsTable = new WeakMap();
|
|
var globalMutationObservers = [];
|
|
var isScheduled = false;
|
|
|
|
function scheduleCallback(observer) {
|
|
if (isScheduled)
|
|
return;
|
|
setEndOfMicrotask(notifyObservers);
|
|
isScheduled = true;
|
|
}
|
|
|
|
// http://dom.spec.whatwg.org/#mutation-observers
|
|
function notifyObservers() {
|
|
isScheduled = false;
|
|
|
|
do {
|
|
var notifyList = globalMutationObservers.slice();
|
|
var anyNonEmpty = false;
|
|
for (var i = 0; i < notifyList.length; i++) {
|
|
var mo = notifyList[i];
|
|
var queue = mo.takeRecords();
|
|
removeTransientObserversFor(mo);
|
|
if (queue.length) {
|
|
mo.callback_(queue, mo);
|
|
anyNonEmpty = true;
|
|
}
|
|
}
|
|
} while (anyNonEmpty);
|
|
}
|
|
|
|
/**
|
|
* @param {string} type
|
|
* @param {Node} target
|
|
* @constructor
|
|
*/
|
|
function MutationRecord(type, target) {
|
|
this.type = type;
|
|
this.target = target;
|
|
this.addedNodes = new wrappers.NodeList();
|
|
this.removedNodes = new wrappers.NodeList();
|
|
this.previousSibling = null;
|
|
this.nextSibling = null;
|
|
this.attributeName = null;
|
|
this.attributeNamespace = null;
|
|
this.oldValue = null;
|
|
}
|
|
|
|
/**
|
|
* Registers transient observers to ancestor and its ancesors for the node
|
|
* which was removed.
|
|
* @param {!Node} ancestor
|
|
* @param {!Node} node
|
|
*/
|
|
function registerTransientObservers(ancestor, node) {
|
|
for (; ancestor; ancestor = ancestor.parentNode) {
|
|
var registrations = registrationsTable.get(ancestor);
|
|
if (!registrations)
|
|
continue;
|
|
for (var i = 0; i < registrations.length; i++) {
|
|
var registration = registrations[i];
|
|
if (registration.options.subtree)
|
|
registration.addTransientObserver(node);
|
|
}
|
|
}
|
|
}
|
|
|
|
function removeTransientObserversFor(observer) {
|
|
for (var i = 0; i < observer.nodes_.length; i++) {
|
|
var node = observer.nodes_[i];
|
|
var registrations = registrationsTable.get(node);
|
|
if (!registrations)
|
|
return;
|
|
for (var j = 0; j < registrations.length; j++) {
|
|
var registration = registrations[j];
|
|
if (registration.observer === observer)
|
|
registration.removeTransientObservers();
|
|
}
|
|
}
|
|
}
|
|
|
|
// http://dom.spec.whatwg.org/#queue-a-mutation-record
|
|
function enqueueMutation(target, type, data) {
|
|
// 1.
|
|
var interestedObservers = Object.create(null);
|
|
var associatedStrings = Object.create(null);
|
|
|
|
// 2.
|
|
for (var node = target; node; node = node.parentNode) {
|
|
// 3.
|
|
var registrations = registrationsTable.get(node);
|
|
if (!registrations)
|
|
continue;
|
|
for (var j = 0; j < registrations.length; j++) {
|
|
var registration = registrations[j];
|
|
var options = registration.options;
|
|
// 1.
|
|
if (node !== target && !options.subtree)
|
|
continue;
|
|
|
|
// 2.
|
|
if (type === 'attributes' && !options.attributes)
|
|
continue;
|
|
|
|
// 3. If type is "attributes", options's attributeFilter is present, and
|
|
// either options's attributeFilter does not contain name or namespace
|
|
// is non-null, continue.
|
|
if (type === 'attributes' && options.attributeFilter &&
|
|
(data.namespace !== null ||
|
|
options.attributeFilter.indexOf(data.name) === -1)) {
|
|
continue;
|
|
}
|
|
|
|
// 4.
|
|
if (type === 'characterData' && !options.characterData)
|
|
continue;
|
|
|
|
// 5.
|
|
if (type === 'childList' && !options.childList)
|
|
continue;
|
|
|
|
// 6.
|
|
var observer = registration.observer;
|
|
interestedObservers[observer.uid_] = observer;
|
|
|
|
// 7. If either type is "attributes" and options's attributeOldValue is
|
|
// true, or type is "characterData" and options's characterDataOldValue
|
|
// is true, set the paired string of registered observer's observer in
|
|
// interested observers to oldValue.
|
|
if (type === 'attributes' && options.attributeOldValue ||
|
|
type === 'characterData' && options.characterDataOldValue) {
|
|
associatedStrings[observer.uid_] = data.oldValue;
|
|
}
|
|
}
|
|
}
|
|
|
|
var anyRecordsEnqueued = false;
|
|
|
|
// 4.
|
|
for (var uid in interestedObservers) {
|
|
var observer = interestedObservers[uid];
|
|
var record = new MutationRecord(type, target);
|
|
|
|
// 2.
|
|
if ('name' in data && 'namespace' in data) {
|
|
record.attributeName = data.name;
|
|
record.attributeNamespace = data.namespace;
|
|
}
|
|
|
|
// 3.
|
|
if (data.addedNodes)
|
|
record.addedNodes = data.addedNodes;
|
|
|
|
// 4.
|
|
if (data.removedNodes)
|
|
record.removedNodes = data.removedNodes;
|
|
|
|
// 5.
|
|
if (data.previousSibling)
|
|
record.previousSibling = data.previousSibling;
|
|
|
|
// 6.
|
|
if (data.nextSibling)
|
|
record.nextSibling = data.nextSibling;
|
|
|
|
// 7.
|
|
if (associatedStrings[uid] !== undefined)
|
|
record.oldValue = associatedStrings[uid];
|
|
|
|
// 8.
|
|
observer.records_.push(record);
|
|
|
|
anyRecordsEnqueued = true;
|
|
}
|
|
|
|
if (anyRecordsEnqueued)
|
|
scheduleCallback();
|
|
}
|
|
|
|
var slice = Array.prototype.slice;
|
|
|
|
/**
|
|
* @param {!Object} options
|
|
* @constructor
|
|
*/
|
|
function MutationObserverOptions(options) {
|
|
this.childList = !!options.childList;
|
|
this.subtree = !!options.subtree;
|
|
|
|
// 1. If either options' attributeOldValue or attributeFilter is present
|
|
// and options' attributes is omitted, set options' attributes to true.
|
|
if (!('attributes' in options) &&
|
|
('attributeOldValue' in options || 'attributeFilter' in options)) {
|
|
this.attributes = true;
|
|
} else {
|
|
this.attributes = !!options.attributes;
|
|
}
|
|
|
|
// 2. If options' characterDataOldValue is present and options'
|
|
// characterData is omitted, set options' characterData to true.
|
|
if ('characterDataOldValue' in options && !('characterData' in options))
|
|
this.characterData = true;
|
|
else
|
|
this.characterData = !!options.characterData;
|
|
|
|
// 3. & 4.
|
|
if (!this.attributes &&
|
|
(options.attributeOldValue || 'attributeFilter' in options) ||
|
|
// 5.
|
|
!this.characterData && options.characterDataOldValue) {
|
|
throw new TypeError();
|
|
}
|
|
|
|
this.characterData = !!options.characterData;
|
|
this.attributeOldValue = !!options.attributeOldValue;
|
|
this.characterDataOldValue = !!options.characterDataOldValue;
|
|
if ('attributeFilter' in options) {
|
|
if (options.attributeFilter == null ||
|
|
typeof options.attributeFilter !== 'object') {
|
|
throw new TypeError();
|
|
}
|
|
this.attributeFilter = slice.call(options.attributeFilter);
|
|
} else {
|
|
this.attributeFilter = null;
|
|
}
|
|
}
|
|
|
|
var uidCounter = 0;
|
|
|
|
/**
|
|
* The class that maps to the DOM MutationObserver interface.
|
|
* @param {Function} callback.
|
|
* @constructor
|
|
*/
|
|
function MutationObserver(callback) {
|
|
this.callback_ = callback;
|
|
this.nodes_ = [];
|
|
this.records_ = [];
|
|
this.uid_ = ++uidCounter;
|
|
|
|
// This will leak. There is no way to implement this without WeakRefs :'(
|
|
globalMutationObservers.push(this);
|
|
}
|
|
|
|
MutationObserver.prototype = {
|
|
// http://dom.spec.whatwg.org/#dom-mutationobserver-observe
|
|
observe: function(target, options) {
|
|
target = wrapIfNeeded(target);
|
|
|
|
var newOptions = new MutationObserverOptions(options);
|
|
|
|
// 6.
|
|
var registration;
|
|
var registrations = registrationsTable.get(target);
|
|
if (!registrations)
|
|
registrationsTable.set(target, registrations = []);
|
|
|
|
for (var i = 0; i < registrations.length; i++) {
|
|
if (registrations[i].observer === this) {
|
|
registration = registrations[i];
|
|
// 6.1.
|
|
registration.removeTransientObservers();
|
|
// 6.2.
|
|
registration.options = newOptions;
|
|
}
|
|
}
|
|
|
|
// 7.
|
|
if (!registration) {
|
|
registration = new Registration(this, target, newOptions);
|
|
registrations.push(registration);
|
|
this.nodes_.push(target);
|
|
}
|
|
},
|
|
|
|
// http://dom.spec.whatwg.org/#dom-mutationobserver-disconnect
|
|
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) {
|
|
registrations.splice(i, 1);
|
|
// Each node can only have one registered observer associated with
|
|
// this observer.
|
|
break;
|
|
}
|
|
}
|
|
}, this);
|
|
this.records_ = [];
|
|
},
|
|
|
|
takeRecords: function() {
|
|
var copyOfRecords = this.records_;
|
|
this.records_ = [];
|
|
return copyOfRecords;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Class used to represent a registered observer.
|
|
* @param {MutationObserver} observer
|
|
* @param {Node} target
|
|
* @param {MutationObserverOptions} options
|
|
* @constructor
|
|
*/
|
|
function Registration(observer, target, options) {
|
|
this.observer = observer;
|
|
this.target = target;
|
|
this.options = options;
|
|
this.transientObservedNodes = [];
|
|
}
|
|
|
|
Registration.prototype = {
|
|
/**
|
|
* Adds a transient observer on node. The transient observer gets removed
|
|
* next time we deliver the change records.
|
|
* @param {Node} node
|
|
*/
|
|
addTransientObserver: function(node) {
|
|
// Don't add transient observers on the target itself. We already have all
|
|
// the required listeners set up on the target.
|
|
if (node === this.target)
|
|
return;
|
|
|
|
this.transientObservedNodes.push(node);
|
|
var registrations = registrationsTable.get(node);
|
|
if (!registrations)
|
|
registrationsTable.set(node, registrations = []);
|
|
|
|
// We know that registrations does not contain this because we already
|
|
// checked if node === this.target.
|
|
registrations.push(this);
|
|
},
|
|
|
|
removeTransientObservers: function() {
|
|
var transientObservedNodes = this.transientObservedNodes;
|
|
this.transientObservedNodes = [];
|
|
|
|
for (var i = 0; i < transientObservedNodes.length; i++) {
|
|
var node = transientObservedNodes[i];
|
|
var registrations = registrationsTable.get(node);
|
|
for (var j = 0; j < registrations.length; j++) {
|
|
if (registrations[j] === this) {
|
|
registrations.splice(j, 1);
|
|
// Each node can only have one registered observer associated with
|
|
// this observer.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
scope.enqueueMutation = enqueueMutation;
|
|
scope.registerTransientObservers = registerTransientObservers;
|
|
scope.wrappers.MutationObserver = MutationObserver;
|
|
scope.wrappers.MutationRecord = MutationRecord;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
var wrappers = scope.wrappers;
|
|
|
|
var wrappedFuns = new WeakMap();
|
|
var listenersTable = new WeakMap();
|
|
var handledEventsTable = new WeakMap();
|
|
var targetTable = new WeakMap();
|
|
var currentTargetTable = new WeakMap();
|
|
var relatedTargetTable = new WeakMap();
|
|
var eventPhaseTable = new WeakMap();
|
|
var stopPropagationTable = new WeakMap();
|
|
var stopImmediatePropagationTable = new WeakMap();
|
|
var eventHandlersTable = new WeakMap();
|
|
var eventPathTable = new WeakMap();
|
|
|
|
function isShadowRoot(node) {
|
|
return node instanceof wrappers.ShadowRoot;
|
|
}
|
|
|
|
function isInsertionPoint(node) {
|
|
var localName = node.localName;
|
|
return localName === 'content' || localName === 'shadow';
|
|
}
|
|
|
|
function isShadowHost(node) {
|
|
return !!node.shadowRoot;
|
|
}
|
|
|
|
function getEventParent(node) {
|
|
var dv;
|
|
return node.parentNode || (dv = node.defaultView) && wrap(dv) || null;
|
|
}
|
|
|
|
// https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-adjusted-parent
|
|
function calculateParents(node, context, ancestors) {
|
|
if (ancestors.length)
|
|
return ancestors.shift();
|
|
|
|
// 1.
|
|
if (isShadowRoot(node))
|
|
return getInsertionParent(node) || node.host;
|
|
|
|
// 2.
|
|
var eventParents = scope.eventParentsTable.get(node);
|
|
if (eventParents) {
|
|
// Copy over the remaining event parents for next iteration.
|
|
for (var i = 1; i < eventParents.length; i++) {
|
|
ancestors[i - 1] = eventParents[i];
|
|
}
|
|
return eventParents[0];
|
|
}
|
|
|
|
// 3.
|
|
if (context && isInsertionPoint(node)) {
|
|
var parentNode = node.parentNode;
|
|
if (parentNode && isShadowHost(parentNode)) {
|
|
var trees = scope.getShadowTrees(parentNode);
|
|
var p = getInsertionParent(context);
|
|
for (var i = 0; i < trees.length; i++) {
|
|
if (trees[i].contains(p))
|
|
return p;
|
|
}
|
|
}
|
|
}
|
|
|
|
return getEventParent(node);
|
|
}
|
|
|
|
// https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#event-retargeting
|
|
function retarget(node) {
|
|
var stack = []; // 1.
|
|
var ancestor = node; // 2.
|
|
var targets = [];
|
|
var ancestors = [];
|
|
while (ancestor) { // 3.
|
|
var context = null; // 3.2.
|
|
// TODO(arv): Change order of these. If the stack is empty we always end
|
|
// up pushing ancestor, no matter what.
|
|
if (isInsertionPoint(ancestor)) { // 3.1.
|
|
context = topMostNotInsertionPoint(stack); // 3.1.1.
|
|
var top = stack[stack.length - 1] || ancestor; // 3.1.2.
|
|
stack.push(top);
|
|
} else if (!stack.length) {
|
|
stack.push(ancestor); // 3.3.
|
|
}
|
|
var target = stack[stack.length - 1]; // 3.4.
|
|
targets.push({target: target, currentTarget: ancestor}); // 3.5.
|
|
if (isShadowRoot(ancestor)) // 3.6.
|
|
stack.pop(); // 3.6.1.
|
|
|
|
ancestor = calculateParents(ancestor, context, ancestors); // 3.7.
|
|
}
|
|
return targets;
|
|
}
|
|
|
|
function topMostNotInsertionPoint(stack) {
|
|
for (var i = stack.length - 1; i >= 0; i--) {
|
|
if (!isInsertionPoint(stack[i]))
|
|
return stack[i];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-adjusted-related-target
|
|
function adjustRelatedTarget(target, related) {
|
|
var ancestors = [];
|
|
while (target) { // 3.
|
|
var stack = []; // 3.1.
|
|
var ancestor = related; // 3.2.
|
|
var last = undefined; // 3.3. Needs to be reset every iteration.
|
|
while (ancestor) {
|
|
var context = null;
|
|
if (!stack.length) {
|
|
stack.push(ancestor);
|
|
} else {
|
|
if (isInsertionPoint(ancestor)) { // 3.4.3.
|
|
context = topMostNotInsertionPoint(stack);
|
|
// isDistributed is more general than checking whether last is
|
|
// assigned into ancestor.
|
|
if (isDistributed(last)) { // 3.4.3.2.
|
|
var head = stack[stack.length - 1];
|
|
stack.push(head);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (inSameTree(ancestor, target)) // 3.4.4.
|
|
return stack[stack.length - 1];
|
|
|
|
if (isShadowRoot(ancestor)) // 3.4.5.
|
|
stack.pop();
|
|
|
|
last = ancestor; // 3.4.6.
|
|
ancestor = calculateParents(ancestor, context, ancestors); // 3.4.7.
|
|
}
|
|
if (isShadowRoot(target)) // 3.5.
|
|
target = target.host;
|
|
else
|
|
target = target.parentNode; // 3.6.
|
|
}
|
|
}
|
|
|
|
function getInsertionParent(node) {
|
|
return scope.insertionParentTable.get(node);
|
|
}
|
|
|
|
function isDistributed(node) {
|
|
return getInsertionParent(node);
|
|
}
|
|
|
|
function rootOfNode(node) {
|
|
var p;
|
|
while (p = node.parentNode) {
|
|
node = p;
|
|
}
|
|
return node;
|
|
}
|
|
|
|
function inSameTree(a, b) {
|
|
return rootOfNode(a) === rootOfNode(b);
|
|
}
|
|
|
|
function enclosedBy(a, b) {
|
|
if (a === b)
|
|
return true;
|
|
if (a instanceof wrappers.ShadowRoot)
|
|
return enclosedBy(rootOfNode(a.host), b);
|
|
return false;
|
|
}
|
|
|
|
|
|
function dispatchOriginalEvent(originalEvent) {
|
|
// Make sure this event is only dispatched once.
|
|
if (handledEventsTable.get(originalEvent))
|
|
return;
|
|
handledEventsTable.set(originalEvent, true);
|
|
|
|
// Render before dispatching the event to ensure that the event path is
|
|
// correct.
|
|
scope.renderAllPending();
|
|
|
|
var target = wrap(originalEvent.target);
|
|
var event = wrap(originalEvent);
|
|
return dispatchEvent(event, target);
|
|
}
|
|
|
|
function dispatchEvent(event, originalWrapperTarget) {
|
|
var eventPath = retarget(originalWrapperTarget);
|
|
|
|
// For window load events the load event is dispatched at the window but
|
|
// the target is set to the document.
|
|
//
|
|
// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-end.html#the-end
|
|
//
|
|
// TODO(arv): Find a less hacky way to do this.
|
|
if (event.type === 'load' &&
|
|
eventPath.length === 2 &&
|
|
eventPath[0].target instanceof wrappers.Document) {
|
|
eventPath.shift();
|
|
}
|
|
|
|
eventPathTable.set(event, eventPath);
|
|
|
|
if (dispatchCapturing(event, eventPath)) {
|
|
if (dispatchAtTarget(event, eventPath)) {
|
|
dispatchBubbling(event, eventPath);
|
|
}
|
|
}
|
|
|
|
eventPhaseTable.set(event, Event.NONE);
|
|
currentTargetTable.set(event, null);
|
|
|
|
return event.defaultPrevented;
|
|
}
|
|
|
|
function dispatchCapturing(event, eventPath) {
|
|
var phase;
|
|
|
|
for (var i = eventPath.length - 1; i > 0; i--) {
|
|
var target = eventPath[i].target;
|
|
var currentTarget = eventPath[i].currentTarget;
|
|
if (target === currentTarget)
|
|
continue;
|
|
|
|
phase = Event.CAPTURING_PHASE;
|
|
if (!invoke(eventPath[i], event, phase))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function dispatchAtTarget(event, eventPath) {
|
|
var phase = Event.AT_TARGET;
|
|
return invoke(eventPath[0], event, phase);
|
|
}
|
|
|
|
function dispatchBubbling(event, eventPath) {
|
|
var bubbles = event.bubbles;
|
|
var phase;
|
|
|
|
for (var i = 1; i < eventPath.length; i++) {
|
|
var target = eventPath[i].target;
|
|
var currentTarget = eventPath[i].currentTarget;
|
|
if (target === currentTarget)
|
|
phase = Event.AT_TARGET;
|
|
else if (bubbles && !stopImmediatePropagationTable.get(event))
|
|
phase = Event.BUBBLING_PHASE;
|
|
else
|
|
continue;
|
|
|
|
if (!invoke(eventPath[i], event, phase))
|
|
return;
|
|
}
|
|
}
|
|
|
|
function invoke(tuple, event, phase) {
|
|
var target = tuple.target;
|
|
var currentTarget = tuple.currentTarget;
|
|
|
|
var listeners = listenersTable.get(currentTarget);
|
|
if (!listeners)
|
|
return true;
|
|
|
|
if ('relatedTarget' in event) {
|
|
var originalEvent = unwrap(event);
|
|
// X-Tag sets relatedTarget on a CustomEvent. If they do that there is no
|
|
// way to have relatedTarget return the adjusted target but worse is that
|
|
// the originalEvent might not have a relatedTarget so we hit an assert
|
|
// when we try to wrap it.
|
|
if (originalEvent.relatedTarget) {
|
|
var relatedTarget = wrap(originalEvent.relatedTarget);
|
|
|
|
var adjusted = adjustRelatedTarget(currentTarget, relatedTarget);
|
|
if (adjusted === target)
|
|
return true;
|
|
|
|
relatedTargetTable.set(event, adjusted);
|
|
}
|
|
}
|
|
|
|
eventPhaseTable.set(event, phase);
|
|
var type = event.type;
|
|
|
|
var anyRemoved = false;
|
|
targetTable.set(event, target);
|
|
currentTargetTable.set(event, currentTarget);
|
|
|
|
for (var i = 0; i < listeners.length; i++) {
|
|
var listener = listeners[i];
|
|
if (listener.removed) {
|
|
anyRemoved = true;
|
|
continue;
|
|
}
|
|
|
|
if (listener.type !== type ||
|
|
!listener.capture && phase === Event.CAPTURING_PHASE ||
|
|
listener.capture && phase === Event.BUBBLING_PHASE) {
|
|
continue;
|
|
}
|
|
|
|
try {
|
|
if (typeof listener.handler === 'function')
|
|
listener.handler.call(currentTarget, event);
|
|
else
|
|
listener.handler.handleEvent(event);
|
|
|
|
if (stopImmediatePropagationTable.get(event))
|
|
return false;
|
|
|
|
} catch (ex) {
|
|
if (window.onerror)
|
|
window.onerror(ex.message);
|
|
else
|
|
console.error(ex, ex.stack);
|
|
}
|
|
}
|
|
|
|
if (anyRemoved) {
|
|
var copy = listeners.slice();
|
|
listeners.length = 0;
|
|
for (var i = 0; i < copy.length; i++) {
|
|
if (!copy[i].removed)
|
|
listeners.push(copy[i]);
|
|
}
|
|
}
|
|
|
|
return !stopPropagationTable.get(event);
|
|
}
|
|
|
|
function Listener(type, handler, capture) {
|
|
this.type = type;
|
|
this.handler = handler;
|
|
this.capture = Boolean(capture);
|
|
}
|
|
Listener.prototype = {
|
|
equals: function(that) {
|
|
return this.handler === that.handler && this.type === that.type &&
|
|
this.capture === that.capture;
|
|
},
|
|
get removed() {
|
|
return this.handler === null;
|
|
},
|
|
remove: function() {
|
|
this.handler = null;
|
|
}
|
|
};
|
|
|
|
var OriginalEvent = window.Event;
|
|
OriginalEvent.prototype.polymerBlackList_ = {returnValue: true};
|
|
|
|
/**
|
|
* Creates a new Event wrapper or wraps an existin native Event object.
|
|
* @param {string|Event} type
|
|
* @param {Object=} options
|
|
* @constructor
|
|
*/
|
|
function Event(type, options) {
|
|
if (type instanceof OriginalEvent)
|
|
this.impl = type;
|
|
else
|
|
return wrap(constructEvent(OriginalEvent, 'Event', type, options));
|
|
}
|
|
Event.prototype = {
|
|
get target() {
|
|
return targetTable.get(this);
|
|
},
|
|
get currentTarget() {
|
|
return currentTargetTable.get(this);
|
|
},
|
|
get eventPhase() {
|
|
return eventPhaseTable.get(this);
|
|
},
|
|
get path() {
|
|
var nodeList = new wrappers.NodeList();
|
|
var eventPath = eventPathTable.get(this);
|
|
if (eventPath) {
|
|
var index = 0;
|
|
var lastIndex = eventPath.length - 1;
|
|
var baseRoot = rootOfNode(currentTargetTable.get(this));
|
|
|
|
for (var i = 0; i <= lastIndex; i++) {
|
|
var currentTarget = eventPath[i].currentTarget;
|
|
var currentRoot = rootOfNode(currentTarget);
|
|
if (enclosedBy(baseRoot, currentRoot) &&
|
|
// Make sure we do not add Window to the path.
|
|
(i !== lastIndex || currentTarget instanceof wrappers.Node)) {
|
|
nodeList[index++] = currentTarget;
|
|
}
|
|
}
|
|
nodeList.length = index;
|
|
}
|
|
return nodeList;
|
|
},
|
|
stopPropagation: function() {
|
|
stopPropagationTable.set(this, true);
|
|
},
|
|
stopImmediatePropagation: function() {
|
|
stopPropagationTable.set(this, true);
|
|
stopImmediatePropagationTable.set(this, true);
|
|
}
|
|
};
|
|
registerWrapper(OriginalEvent, Event, document.createEvent('Event'));
|
|
|
|
function unwrapOptions(options) {
|
|
if (!options || !options.relatedTarget)
|
|
return options;
|
|
return Object.create(options, {
|
|
relatedTarget: {value: unwrap(options.relatedTarget)}
|
|
});
|
|
}
|
|
|
|
function registerGenericEvent(name, SuperEvent, prototype) {
|
|
var OriginalEvent = window[name];
|
|
var GenericEvent = function(type, options) {
|
|
if (type instanceof OriginalEvent)
|
|
this.impl = type;
|
|
else
|
|
return wrap(constructEvent(OriginalEvent, name, type, options));
|
|
};
|
|
GenericEvent.prototype = Object.create(SuperEvent.prototype);
|
|
if (prototype)
|
|
mixin(GenericEvent.prototype, prototype);
|
|
if (OriginalEvent) {
|
|
// IE does not support event constructors but FocusEvent can only be
|
|
// created using new FocusEvent in Firefox.
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=882165
|
|
if (OriginalEvent.prototype['init' + name]) {
|
|
registerWrapper(OriginalEvent, GenericEvent,
|
|
document.createEvent(name));
|
|
} else {
|
|
registerWrapper(OriginalEvent, GenericEvent, new OriginalEvent('temp'));
|
|
}
|
|
}
|
|
return GenericEvent;
|
|
}
|
|
|
|
var UIEvent = registerGenericEvent('UIEvent', Event);
|
|
var CustomEvent = registerGenericEvent('CustomEvent', Event);
|
|
|
|
var relatedTargetProto = {
|
|
get relatedTarget() {
|
|
return relatedTargetTable.get(this) || wrap(unwrap(this).relatedTarget);
|
|
}
|
|
};
|
|
|
|
function getInitFunction(name, relatedTargetIndex) {
|
|
return function() {
|
|
arguments[relatedTargetIndex] = unwrap(arguments[relatedTargetIndex]);
|
|
var impl = unwrap(this);
|
|
impl[name].apply(impl, arguments);
|
|
};
|
|
}
|
|
|
|
var mouseEventProto = mixin({
|
|
initMouseEvent: getInitFunction('initMouseEvent', 14)
|
|
}, relatedTargetProto);
|
|
|
|
var focusEventProto = mixin({
|
|
initFocusEvent: getInitFunction('initFocusEvent', 5)
|
|
}, relatedTargetProto);
|
|
|
|
var MouseEvent = registerGenericEvent('MouseEvent', UIEvent, mouseEventProto);
|
|
var FocusEvent = registerGenericEvent('FocusEvent', UIEvent, focusEventProto);
|
|
|
|
// In case the browser does not support event constructors we polyfill that
|
|
// by calling `createEvent('Foo')` and `initFooEvent` where the arguments to
|
|
// `initFooEvent` are derived from the registered default event init dict.
|
|
var defaultInitDicts = Object.create(null);
|
|
|
|
var supportsEventConstructors = (function() {
|
|
try {
|
|
new window.MouseEvent('click');
|
|
} catch (ex) {
|
|
return false;
|
|
}
|
|
return true;
|
|
})();
|
|
|
|
/**
|
|
* Constructs a new native event.
|
|
*/
|
|
function constructEvent(OriginalEvent, name, type, options) {
|
|
if (supportsEventConstructors)
|
|
return new OriginalEvent(type, unwrapOptions(options));
|
|
|
|
// Create the arguments from the default dictionary.
|
|
var event = unwrap(document.createEvent(name));
|
|
var defaultDict = defaultInitDicts[name];
|
|
var args = [type];
|
|
Object.keys(defaultDict).forEach(function(key) {
|
|
var v = options != null && key in options ?
|
|
options[key] : defaultDict[key];
|
|
if (key === 'relatedTarget')
|
|
v = unwrap(v);
|
|
args.push(v);
|
|
});
|
|
event['init' + name].apply(event, args);
|
|
return event;
|
|
}
|
|
|
|
if (!supportsEventConstructors) {
|
|
var configureEventConstructor = function(name, initDict, superName) {
|
|
if (superName) {
|
|
var superDict = defaultInitDicts[superName];
|
|
initDict = mixin(mixin({}, superDict), initDict);
|
|
}
|
|
|
|
defaultInitDicts[name] = initDict;
|
|
};
|
|
|
|
// The order of the default event init dictionary keys is important, the
|
|
// arguments to initFooEvent is derived from that.
|
|
configureEventConstructor('Event', {bubbles: false, cancelable: false});
|
|
configureEventConstructor('CustomEvent', {detail: null}, 'Event');
|
|
configureEventConstructor('UIEvent', {view: null, detail: 0}, 'Event');
|
|
configureEventConstructor('MouseEvent', {
|
|
screenX: 0,
|
|
screenY: 0,
|
|
clientX: 0,
|
|
clientY: 0,
|
|
ctrlKey: false,
|
|
altKey: false,
|
|
shiftKey: false,
|
|
metaKey: false,
|
|
button: 0,
|
|
relatedTarget: null
|
|
}, 'UIEvent');
|
|
configureEventConstructor('FocusEvent', {relatedTarget: null}, 'UIEvent');
|
|
}
|
|
|
|
function BeforeUnloadEvent(impl) {
|
|
Event.call(this);
|
|
}
|
|
BeforeUnloadEvent.prototype = Object.create(Event.prototype);
|
|
mixin(BeforeUnloadEvent.prototype, {
|
|
get returnValue() {
|
|
return this.impl.returnValue;
|
|
},
|
|
set returnValue(v) {
|
|
this.impl.returnValue = v;
|
|
}
|
|
});
|
|
|
|
function isValidListener(fun) {
|
|
if (typeof fun === 'function')
|
|
return true;
|
|
return fun && fun.handleEvent;
|
|
}
|
|
|
|
function isMutationEvent(type) {
|
|
switch (type) {
|
|
case 'DOMAttrModified':
|
|
case 'DOMAttributeNameChanged':
|
|
case 'DOMCharacterDataModified':
|
|
case 'DOMElementNameChanged':
|
|
case 'DOMNodeInserted':
|
|
case 'DOMNodeInsertedIntoDocument':
|
|
case 'DOMNodeRemoved':
|
|
case 'DOMNodeRemovedFromDocument':
|
|
case 'DOMSubtreeModified':
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
var OriginalEventTarget = window.EventTarget;
|
|
|
|
/**
|
|
* This represents a wrapper for an EventTarget.
|
|
* @param {!EventTarget} impl The original event target.
|
|
* @constructor
|
|
*/
|
|
function EventTarget(impl) {
|
|
this.impl = impl;
|
|
}
|
|
|
|
// Node and Window have different internal type checks in WebKit so we cannot
|
|
// use the same method as the original function.
|
|
var methodNames = [
|
|
'addEventListener',
|
|
'removeEventListener',
|
|
'dispatchEvent'
|
|
];
|
|
|
|
[Node, Window].forEach(function(constructor) {
|
|
var p = constructor.prototype;
|
|
methodNames.forEach(function(name) {
|
|
Object.defineProperty(p, name + '_', {value: p[name]});
|
|
});
|
|
});
|
|
|
|
function getTargetToListenAt(wrapper) {
|
|
if (wrapper instanceof wrappers.ShadowRoot)
|
|
wrapper = wrapper.host;
|
|
return unwrap(wrapper);
|
|
}
|
|
|
|
EventTarget.prototype = {
|
|
addEventListener: function(type, fun, capture) {
|
|
if (!isValidListener(fun) || isMutationEvent(type))
|
|
return;
|
|
|
|
var listener = new Listener(type, fun, capture);
|
|
var listeners = listenersTable.get(this);
|
|
if (!listeners) {
|
|
listeners = [];
|
|
listenersTable.set(this, listeners);
|
|
} else {
|
|
// Might have a duplicate.
|
|
for (var i = 0; i < listeners.length; i++) {
|
|
if (listener.equals(listeners[i]))
|
|
return;
|
|
}
|
|
}
|
|
|
|
listeners.push(listener);
|
|
|
|
var target = getTargetToListenAt(this);
|
|
target.addEventListener_(type, dispatchOriginalEvent, true);
|
|
},
|
|
removeEventListener: function(type, fun, capture) {
|
|
capture = Boolean(capture);
|
|
var listeners = listenersTable.get(this);
|
|
if (!listeners)
|
|
return;
|
|
var count = 0, found = false;
|
|
for (var i = 0; i < listeners.length; i++) {
|
|
if (listeners[i].type === type && listeners[i].capture === capture) {
|
|
count++;
|
|
if (listeners[i].handler === fun) {
|
|
found = true;
|
|
listeners[i].remove();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (found && count === 1) {
|
|
var target = getTargetToListenAt(this);
|
|
target.removeEventListener_(type, dispatchOriginalEvent, true);
|
|
}
|
|
},
|
|
dispatchEvent: function(event) {
|
|
var target = getTargetToListenAt(this);
|
|
var nativeEvent = unwrap(event);
|
|
// Allow dispatching the same event again. This is safe because if user
|
|
// code calls this during an existing dispatch of the same event the
|
|
// native dispatchEvent throws (that is required by the spec).
|
|
handledEventsTable.set(nativeEvent, false);
|
|
return target.dispatchEvent_(nativeEvent);
|
|
}
|
|
};
|
|
|
|
if (OriginalEventTarget)
|
|
registerWrapper(OriginalEventTarget, EventTarget);
|
|
|
|
function wrapEventTargetMethods(constructors) {
|
|
forwardMethodsToWrapper(constructors, methodNames);
|
|
}
|
|
|
|
var originalElementFromPoint = document.elementFromPoint;
|
|
|
|
function elementFromPoint(self, document, x, y) {
|
|
scope.renderAllPending();
|
|
|
|
var element = wrap(originalElementFromPoint.call(document.impl, x, y));
|
|
var targets = retarget(element, this)
|
|
for (var i = 0; i < targets.length; i++) {
|
|
var target = targets[i];
|
|
if (target.currentTarget === self)
|
|
return target.target;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns a function that is to be used as a getter for `onfoo` properties.
|
|
* @param {string} name
|
|
* @return {Function}
|
|
*/
|
|
function getEventHandlerGetter(name) {
|
|
return function() {
|
|
var inlineEventHandlers = eventHandlersTable.get(this);
|
|
return inlineEventHandlers && inlineEventHandlers[name] &&
|
|
inlineEventHandlers[name].value || null;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Returns a function that is to be used as a setter for `onfoo` properties.
|
|
* @param {string} name
|
|
* @return {Function}
|
|
*/
|
|
function getEventHandlerSetter(name) {
|
|
var eventType = name.slice(2);
|
|
return function(value) {
|
|
var inlineEventHandlers = eventHandlersTable.get(this);
|
|
if (!inlineEventHandlers) {
|
|
inlineEventHandlers = Object.create(null);
|
|
eventHandlersTable.set(this, inlineEventHandlers);
|
|
}
|
|
|
|
var old = inlineEventHandlers[name];
|
|
if (old)
|
|
this.removeEventListener(eventType, old.wrapped, false);
|
|
|
|
if (typeof value === 'function') {
|
|
var wrapped = function(e) {
|
|
var rv = value.call(this, e);
|
|
if (rv === false)
|
|
e.preventDefault();
|
|
else if (name === 'onbeforeunload' && typeof rv === 'string')
|
|
e.returnValue = rv;
|
|
// mouseover uses true for preventDefault but preventDefault for
|
|
// mouseover is ignored by browsers these day.
|
|
};
|
|
|
|
this.addEventListener(eventType, wrapped, false);
|
|
inlineEventHandlers[name] = {
|
|
value: value,
|
|
wrapped: wrapped
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
scope.adjustRelatedTarget = adjustRelatedTarget;
|
|
scope.elementFromPoint = elementFromPoint;
|
|
scope.getEventHandlerGetter = getEventHandlerGetter;
|
|
scope.getEventHandlerSetter = getEventHandlerSetter;
|
|
scope.wrapEventTargetMethods = wrapEventTargetMethods;
|
|
scope.wrappers.BeforeUnloadEvent = BeforeUnloadEvent;
|
|
scope.wrappers.CustomEvent = CustomEvent;
|
|
scope.wrappers.Event = Event;
|
|
scope.wrappers.EventTarget = EventTarget;
|
|
scope.wrappers.FocusEvent = FocusEvent;
|
|
scope.wrappers.MouseEvent = MouseEvent;
|
|
scope.wrappers.UIEvent = UIEvent;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2012 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var wrap = scope.wrap;
|
|
|
|
function nonEnum(obj, prop) {
|
|
Object.defineProperty(obj, prop, {enumerable: false});
|
|
}
|
|
|
|
function NodeList() {
|
|
this.length = 0;
|
|
nonEnum(this, 'length');
|
|
}
|
|
NodeList.prototype = {
|
|
item: function(index) {
|
|
return this[index];
|
|
}
|
|
};
|
|
nonEnum(NodeList.prototype, 'item');
|
|
|
|
function wrapNodeList(list) {
|
|
if (list == null)
|
|
return list;
|
|
var wrapperList = new NodeList();
|
|
for (var i = 0, length = list.length; i < length; i++) {
|
|
wrapperList[i] = wrap(list[i]);
|
|
}
|
|
wrapperList.length = length;
|
|
return wrapperList;
|
|
}
|
|
|
|
function addWrapNodeListMethod(wrapperConstructor, name) {
|
|
wrapperConstructor.prototype[name] = function() {
|
|
return wrapNodeList(this.impl[name].apply(this.impl, arguments));
|
|
};
|
|
}
|
|
|
|
scope.wrappers.NodeList = NodeList;
|
|
scope.addWrapNodeListMethod = addWrapNodeListMethod;
|
|
scope.wrapNodeList = wrapNodeList;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2012 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var EventTarget = scope.wrappers.EventTarget;
|
|
var NodeList = scope.wrappers.NodeList;
|
|
var assert = scope.assert;
|
|
var defineWrapGetter = scope.defineWrapGetter;
|
|
var enqueueMutation = scope.enqueueMutation;
|
|
var mixin = scope.mixin;
|
|
var registerTransientObservers = scope.registerTransientObservers;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
var wrapIfNeeded = scope.wrapIfNeeded;
|
|
|
|
function assertIsNodeWrapper(node) {
|
|
assert(node instanceof Node);
|
|
}
|
|
|
|
function createOneElementNodeList(node) {
|
|
var nodes = new NodeList();
|
|
nodes[0] = node;
|
|
nodes.length = 1;
|
|
return nodes;
|
|
}
|
|
|
|
var surpressMutations = false;
|
|
|
|
/**
|
|
* Called before node is inserted into a node to enqueue its removal from its
|
|
* old parent.
|
|
* @param {!Node} node The node that is about to be removed.
|
|
* @param {!Node} parent The parent node that the node is being removed from.
|
|
* @param {!NodeList} nodes The collected nodes.
|
|
*/
|
|
function enqueueRemovalForInsertedNodes(node, parent, nodes) {
|
|
enqueueMutation(parent, 'childList', {
|
|
removedNodes: nodes,
|
|
previousSibling: node.previousSibling,
|
|
nextSibling: node.nextSibling
|
|
});
|
|
}
|
|
|
|
function enqueueRemovalForInsertedDocumentFragment(df, nodes) {
|
|
enqueueMutation(df, 'childList', {
|
|
removedNodes: nodes
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Collects nodes from a DocumentFragment or a Node for removal followed
|
|
* by an insertion.
|
|
*
|
|
* This updates the internal pointers for node, previousNode and nextNode.
|
|
*/
|
|
function collectNodes(node, parentNode, previousNode, nextNode) {
|
|
if (node instanceof DocumentFragment) {
|
|
var nodes = collectNodesForDocumentFragment(node);
|
|
|
|
// The extra loop is to work around bugs with DocumentFragments in IE.
|
|
surpressMutations = true;
|
|
for (var i = nodes.length - 1; i >= 0; i--) {
|
|
node.removeChild(nodes[i]);
|
|
nodes[i].parentNode_ = parentNode;
|
|
}
|
|
surpressMutations = false;
|
|
|
|
for (var i = 0; i < nodes.length; i++) {
|
|
nodes[i].previousSibling_ = nodes[i - 1] || previousNode;
|
|
nodes[i].nextSibling_ = nodes[i + 1] || nextNode;
|
|
}
|
|
|
|
if (previousNode)
|
|
previousNode.nextSibling_ = nodes[0];
|
|
if (nextNode)
|
|
nextNode.previousSibling_ = nodes[nodes.length - 1];
|
|
|
|
return nodes;
|
|
}
|
|
|
|
var nodes = createOneElementNodeList(node);
|
|
var oldParent = node.parentNode;
|
|
if (oldParent) {
|
|
// This will enqueue the mutation record for the removal as needed.
|
|
oldParent.removeChild(node);
|
|
}
|
|
|
|
node.parentNode_ = parentNode;
|
|
node.previousSibling_ = previousNode;
|
|
node.nextSibling_ = nextNode;
|
|
if (previousNode)
|
|
previousNode.nextSibling_ = node;
|
|
if (nextNode)
|
|
nextNode.previousSibling_ = node;
|
|
|
|
return nodes;
|
|
}
|
|
|
|
function collectNodesNative(node) {
|
|
if (node instanceof DocumentFragment)
|
|
return collectNodesForDocumentFragment(node);
|
|
|
|
var nodes = createOneElementNodeList(node);
|
|
var oldParent = node.parentNode;
|
|
if (oldParent)
|
|
enqueueRemovalForInsertedNodes(node, oldParent, nodes);
|
|
return nodes;
|
|
}
|
|
|
|
function collectNodesForDocumentFragment(node) {
|
|
var nodes = new NodeList();
|
|
var i = 0;
|
|
for (var child = node.firstChild; child; child = child.nextSibling) {
|
|
nodes[i++] = child;
|
|
}
|
|
nodes.length = i;
|
|
enqueueRemovalForInsertedDocumentFragment(node, nodes);
|
|
return nodes;
|
|
}
|
|
|
|
function snapshotNodeList(nodeList) {
|
|
// NodeLists are not live at the moment so just return the same object.
|
|
return nodeList;
|
|
}
|
|
|
|
// http://dom.spec.whatwg.org/#node-is-inserted
|
|
function nodeWasAdded(node) {
|
|
node.nodeIsInserted_();
|
|
}
|
|
|
|
function nodesWereAdded(nodes) {
|
|
for (var i = 0; i < nodes.length; i++) {
|
|
nodeWasAdded(nodes[i]);
|
|
}
|
|
}
|
|
|
|
// http://dom.spec.whatwg.org/#node-is-removed
|
|
function nodeWasRemoved(node) {
|
|
// Nothing at this point in time.
|
|
}
|
|
|
|
function nodesWereRemoved(nodes) {
|
|
// Nothing at this point in time.
|
|
}
|
|
|
|
function ensureSameOwnerDocument(parent, child) {
|
|
var ownerDoc = parent.nodeType === Node.DOCUMENT_NODE ?
|
|
parent : parent.ownerDocument;
|
|
if (ownerDoc !== child.ownerDocument)
|
|
ownerDoc.adoptNode(child);
|
|
}
|
|
|
|
function adoptNodesIfNeeded(owner, nodes) {
|
|
if (!nodes.length)
|
|
return;
|
|
|
|
var ownerDoc = owner.ownerDocument;
|
|
|
|
// All nodes have the same ownerDocument when we get here.
|
|
if (ownerDoc === nodes[0].ownerDocument)
|
|
return;
|
|
|
|
for (var i = 0; i < nodes.length; i++) {
|
|
scope.adoptNodeNoRemove(nodes[i], ownerDoc);
|
|
}
|
|
}
|
|
|
|
function unwrapNodesForInsertion(owner, nodes) {
|
|
adoptNodesIfNeeded(owner, nodes);
|
|
var length = nodes.length;
|
|
|
|
if (length === 1)
|
|
return unwrap(nodes[0]);
|
|
|
|
var df = unwrap(owner.ownerDocument.createDocumentFragment());
|
|
for (var i = 0; i < length; i++) {
|
|
df.appendChild(unwrap(nodes[i]));
|
|
}
|
|
return df;
|
|
}
|
|
|
|
function removeAllChildNodes(wrapper) {
|
|
if (wrapper.invalidateShadowRenderer()) {
|
|
var childWrapper = wrapper.firstChild;
|
|
while (childWrapper) {
|
|
assert(childWrapper.parentNode === wrapper);
|
|
var nextSibling = childWrapper.nextSibling;
|
|
var childNode = unwrap(childWrapper);
|
|
var parentNode = childNode.parentNode;
|
|
if (parentNode)
|
|
originalRemoveChild.call(parentNode, childNode);
|
|
childWrapper.previousSibling_ = childWrapper.nextSibling_ =
|
|
childWrapper.parentNode_ = null;
|
|
childWrapper = nextSibling;
|
|
}
|
|
wrapper.firstChild_ = wrapper.lastChild_ = null;
|
|
} else {
|
|
var node = unwrap(wrapper);
|
|
var child = node.firstChild;
|
|
var nextSibling;
|
|
while (child) {
|
|
nextSibling = child.nextSibling;
|
|
originalRemoveChild.call(node, child);
|
|
child = nextSibling;
|
|
}
|
|
}
|
|
}
|
|
|
|
function invalidateParent(node) {
|
|
var p = node.parentNode;
|
|
return p && p.invalidateShadowRenderer();
|
|
}
|
|
|
|
var OriginalNode = window.Node;
|
|
|
|
/**
|
|
* This represents a wrapper of a native DOM node.
|
|
* @param {!Node} original The original DOM node, aka, the visual DOM node.
|
|
* @constructor
|
|
* @extends {EventTarget}
|
|
*/
|
|
function Node(original) {
|
|
assert(original instanceof OriginalNode);
|
|
|
|
EventTarget.call(this, original);
|
|
|
|
// These properties are used to override the visual references with the
|
|
// logical ones. If the value is undefined it means that the logical is the
|
|
// same as the visual.
|
|
|
|
/**
|
|
* @type {Node|undefined}
|
|
* @private
|
|
*/
|
|
this.parentNode_ = undefined;
|
|
|
|
/**
|
|
* @type {Node|undefined}
|
|
* @private
|
|
*/
|
|
this.firstChild_ = undefined;
|
|
|
|
/**
|
|
* @type {Node|undefined}
|
|
* @private
|
|
*/
|
|
this.lastChild_ = undefined;
|
|
|
|
/**
|
|
* @type {Node|undefined}
|
|
* @private
|
|
*/
|
|
this.nextSibling_ = undefined;
|
|
|
|
/**
|
|
* @type {Node|undefined}
|
|
* @private
|
|
*/
|
|
this.previousSibling_ = undefined;
|
|
};
|
|
|
|
var OriginalDocumentFragment = window.DocumentFragment;
|
|
var originalAppendChild = OriginalNode.prototype.appendChild;
|
|
var originalCompareDocumentPosition =
|
|
OriginalNode.prototype.compareDocumentPosition;
|
|
var originalInsertBefore = OriginalNode.prototype.insertBefore;
|
|
var originalRemoveChild = OriginalNode.prototype.removeChild;
|
|
var originalReplaceChild = OriginalNode.prototype.replaceChild;
|
|
|
|
var isIe = /Trident/.test(navigator.userAgent);
|
|
|
|
var removeChildOriginalHelper = isIe ?
|
|
function(parent, child) {
|
|
try {
|
|
originalRemoveChild.call(parent, child);
|
|
} catch (ex) {
|
|
if (!(parent instanceof OriginalDocumentFragment))
|
|
throw ex;
|
|
}
|
|
} :
|
|
function(parent, child) {
|
|
originalRemoveChild.call(parent, child);
|
|
};
|
|
|
|
Node.prototype = Object.create(EventTarget.prototype);
|
|
mixin(Node.prototype, {
|
|
appendChild: function(childWrapper) {
|
|
return this.insertBefore(childWrapper, null);
|
|
},
|
|
|
|
insertBefore: function(childWrapper, refWrapper) {
|
|
assertIsNodeWrapper(childWrapper);
|
|
|
|
refWrapper = refWrapper || null;
|
|
refWrapper && assertIsNodeWrapper(refWrapper);
|
|
refWrapper && assert(refWrapper.parentNode === this);
|
|
|
|
var nodes;
|
|
var previousNode =
|
|
refWrapper ? refWrapper.previousSibling : this.lastChild;
|
|
|
|
var useNative = !this.invalidateShadowRenderer() &&
|
|
!invalidateParent(childWrapper);
|
|
|
|
if (useNative)
|
|
nodes = collectNodesNative(childWrapper);
|
|
else
|
|
nodes = collectNodes(childWrapper, this, previousNode, refWrapper);
|
|
|
|
if (useNative) {
|
|
ensureSameOwnerDocument(this, childWrapper);
|
|
originalInsertBefore.call(this.impl, unwrap(childWrapper),
|
|
unwrap(refWrapper));
|
|
} else {
|
|
if (!previousNode)
|
|
this.firstChild_ = nodes[0];
|
|
if (!refWrapper)
|
|
this.lastChild_ = nodes[nodes.length - 1];
|
|
|
|
var refNode = unwrap(refWrapper);
|
|
var parentNode = refNode ? refNode.parentNode : this.impl;
|
|
|
|
// insertBefore refWrapper no matter what the parent is?
|
|
if (parentNode) {
|
|
originalInsertBefore.call(parentNode,
|
|
unwrapNodesForInsertion(this, nodes), refNode);
|
|
} else {
|
|
adoptNodesIfNeeded(this, nodes);
|
|
}
|
|
}
|
|
|
|
enqueueMutation(this, 'childList', {
|
|
addedNodes: nodes,
|
|
nextSibling: refWrapper,
|
|
previousSibling: previousNode
|
|
});
|
|
|
|
nodesWereAdded(nodes);
|
|
|
|
return childWrapper;
|
|
},
|
|
|
|
removeChild: function(childWrapper) {
|
|
assertIsNodeWrapper(childWrapper);
|
|
if (childWrapper.parentNode !== this) {
|
|
// IE has invalid DOM trees at times.
|
|
var found = false;
|
|
var childNodes = this.childNodes;
|
|
for (var ieChild = this.firstChild; ieChild;
|
|
ieChild = ieChild.nextSibling) {
|
|
if (ieChild === childWrapper) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
// TODO(arv): DOMException
|
|
throw new Error('NotFoundError');
|
|
}
|
|
}
|
|
|
|
var childNode = unwrap(childWrapper);
|
|
var childWrapperNextSibling = childWrapper.nextSibling;
|
|
var childWrapperPreviousSibling = childWrapper.previousSibling;
|
|
|
|
if (this.invalidateShadowRenderer()) {
|
|
// We need to remove the real node from the DOM before updating the
|
|
// pointers. This is so that that mutation event is dispatched before
|
|
// the pointers have changed.
|
|
var thisFirstChild = this.firstChild;
|
|
var thisLastChild = this.lastChild;
|
|
|
|
var parentNode = childNode.parentNode;
|
|
if (parentNode)
|
|
removeChildOriginalHelper(parentNode, childNode);
|
|
|
|
if (thisFirstChild === childWrapper)
|
|
this.firstChild_ = childWrapperNextSibling;
|
|
if (thisLastChild === childWrapper)
|
|
this.lastChild_ = childWrapperPreviousSibling;
|
|
if (childWrapperPreviousSibling)
|
|
childWrapperPreviousSibling.nextSibling_ = childWrapperNextSibling;
|
|
if (childWrapperNextSibling) {
|
|
childWrapperNextSibling.previousSibling_ =
|
|
childWrapperPreviousSibling;
|
|
}
|
|
|
|
childWrapper.previousSibling_ = childWrapper.nextSibling_ =
|
|
childWrapper.parentNode_ = undefined;
|
|
} else {
|
|
removeChildOriginalHelper(this.impl, childNode);
|
|
}
|
|
|
|
if (!surpressMutations) {
|
|
enqueueMutation(this, 'childList', {
|
|
removedNodes: createOneElementNodeList(childWrapper),
|
|
nextSibling: childWrapperNextSibling,
|
|
previousSibling: childWrapperPreviousSibling
|
|
});
|
|
}
|
|
|
|
registerTransientObservers(this, childWrapper);
|
|
|
|
return childWrapper;
|
|
},
|
|
|
|
replaceChild: function(newChildWrapper, oldChildWrapper) {
|
|
assertIsNodeWrapper(newChildWrapper);
|
|
assertIsNodeWrapper(oldChildWrapper);
|
|
|
|
if (oldChildWrapper.parentNode !== this) {
|
|
// TODO(arv): DOMException
|
|
throw new Error('NotFoundError');
|
|
}
|
|
|
|
var oldChildNode = unwrap(oldChildWrapper);
|
|
var nextNode = oldChildWrapper.nextSibling;
|
|
var previousNode = oldChildWrapper.previousSibling;
|
|
var nodes;
|
|
|
|
var useNative = !this.invalidateShadowRenderer() &&
|
|
!invalidateParent(newChildWrapper);
|
|
|
|
if (useNative) {
|
|
nodes = collectNodesNative(newChildWrapper);
|
|
} else {
|
|
if (nextNode === newChildWrapper)
|
|
nextNode = newChildWrapper.nextSibling;
|
|
nodes = collectNodes(newChildWrapper, this, previousNode, nextNode);
|
|
}
|
|
|
|
if (!useNative) {
|
|
if (this.firstChild === oldChildWrapper)
|
|
this.firstChild_ = nodes[0];
|
|
if (this.lastChild === oldChildWrapper)
|
|
this.lastChild_ = nodes[nodes.length - 1];
|
|
|
|
oldChildWrapper.previousSibling_ = oldChildWrapper.nextSibling_ =
|
|
oldChildWrapper.parentNode_ = undefined;
|
|
|
|
// replaceChild no matter what the parent is?
|
|
if (oldChildNode.parentNode) {
|
|
originalReplaceChild.call(
|
|
oldChildNode.parentNode,
|
|
unwrapNodesForInsertion(this, nodes),
|
|
oldChildNode);
|
|
}
|
|
} else {
|
|
ensureSameOwnerDocument(this, newChildWrapper);
|
|
originalReplaceChild.call(this.impl, unwrap(newChildWrapper),
|
|
oldChildNode);
|
|
}
|
|
|
|
enqueueMutation(this, 'childList', {
|
|
addedNodes: nodes,
|
|
removedNodes: createOneElementNodeList(oldChildWrapper),
|
|
nextSibling: nextNode,
|
|
previousSibling: previousNode
|
|
});
|
|
|
|
nodeWasRemoved(oldChildWrapper);
|
|
nodesWereAdded(nodes);
|
|
|
|
return oldChildWrapper;
|
|
},
|
|
|
|
/**
|
|
* Called after a node was inserted. Subclasses override this to invalidate
|
|
* the renderer as needed.
|
|
* @private
|
|
*/
|
|
nodeIsInserted_: function() {
|
|
for (var child = this.firstChild; child; child = child.nextSibling) {
|
|
child.nodeIsInserted_();
|
|
}
|
|
},
|
|
|
|
hasChildNodes: function() {
|
|
return this.firstChild !== null;
|
|
},
|
|
|
|
/** @type {Node} */
|
|
get parentNode() {
|
|
// If the parentNode has not been overridden, use the original parentNode.
|
|
return this.parentNode_ !== undefined ?
|
|
this.parentNode_ : wrap(this.impl.parentNode);
|
|
},
|
|
|
|
/** @type {Node} */
|
|
get firstChild() {
|
|
return this.firstChild_ !== undefined ?
|
|
this.firstChild_ : wrap(this.impl.firstChild);
|
|
},
|
|
|
|
/** @type {Node} */
|
|
get lastChild() {
|
|
return this.lastChild_ !== undefined ?
|
|
this.lastChild_ : wrap(this.impl.lastChild);
|
|
},
|
|
|
|
/** @type {Node} */
|
|
get nextSibling() {
|
|
return this.nextSibling_ !== undefined ?
|
|
this.nextSibling_ : wrap(this.impl.nextSibling);
|
|
},
|
|
|
|
/** @type {Node} */
|
|
get previousSibling() {
|
|
return this.previousSibling_ !== undefined ?
|
|
this.previousSibling_ : wrap(this.impl.previousSibling);
|
|
},
|
|
|
|
get parentElement() {
|
|
var p = this.parentNode;
|
|
while (p && p.nodeType !== Node.ELEMENT_NODE) {
|
|
p = p.parentNode;
|
|
}
|
|
return p;
|
|
},
|
|
|
|
get textContent() {
|
|
// TODO(arv): This should fallback to this.impl.textContent if there
|
|
// are no shadow trees below or above the context node.
|
|
var s = '';
|
|
for (var child = this.firstChild; child; child = child.nextSibling) {
|
|
s += child.textContent;
|
|
}
|
|
return s;
|
|
},
|
|
set textContent(textContent) {
|
|
var removedNodes = snapshotNodeList(this.childNodes);
|
|
|
|
if (this.invalidateShadowRenderer()) {
|
|
removeAllChildNodes(this);
|
|
if (textContent !== '') {
|
|
var textNode = this.impl.ownerDocument.createTextNode(textContent);
|
|
this.appendChild(textNode);
|
|
}
|
|
} else {
|
|
this.impl.textContent = textContent;
|
|
}
|
|
|
|
var addedNodes = snapshotNodeList(this.childNodes);
|
|
|
|
enqueueMutation(this, 'childList', {
|
|
addedNodes: addedNodes,
|
|
removedNodes: removedNodes
|
|
});
|
|
|
|
nodesWereRemoved(removedNodes);
|
|
nodesWereAdded(addedNodes);
|
|
},
|
|
|
|
get childNodes() {
|
|
var wrapperList = new NodeList();
|
|
var i = 0;
|
|
for (var child = this.firstChild; child; child = child.nextSibling) {
|
|
wrapperList[i++] = child;
|
|
}
|
|
wrapperList.length = i;
|
|
return wrapperList;
|
|
},
|
|
|
|
cloneNode: function(deep) {
|
|
var clone = wrap(this.impl.cloneNode(false));
|
|
if (deep) {
|
|
for (var child = this.firstChild; child; child = child.nextSibling) {
|
|
clone.appendChild(child.cloneNode(true));
|
|
}
|
|
}
|
|
// TODO(arv): Some HTML elements also clone other data like value.
|
|
return clone;
|
|
},
|
|
|
|
contains: function(child) {
|
|
if (!child)
|
|
return false;
|
|
|
|
child = wrapIfNeeded(child);
|
|
|
|
// TODO(arv): Optimize using ownerDocument etc.
|
|
if (child === this)
|
|
return true;
|
|
var parentNode = child.parentNode;
|
|
if (!parentNode)
|
|
return false;
|
|
return this.contains(parentNode);
|
|
},
|
|
|
|
compareDocumentPosition: function(otherNode) {
|
|
// This only wraps, it therefore only operates on the composed DOM and not
|
|
// the logical DOM.
|
|
return originalCompareDocumentPosition.call(this.impl, unwrap(otherNode));
|
|
}
|
|
});
|
|
|
|
defineWrapGetter(Node, 'ownerDocument');
|
|
|
|
// We use a DocumentFragment as a base and then delete the properties of
|
|
// DocumentFragment.prototype from the wrapper Node. Since delete makes
|
|
// objects slow in some JS engines we recreate the prototype object.
|
|
registerWrapper(OriginalNode, Node, document.createDocumentFragment());
|
|
delete Node.prototype.querySelector;
|
|
delete Node.prototype.querySelectorAll;
|
|
Node.prototype = mixin(Object.create(EventTarget.prototype), Node.prototype);
|
|
|
|
scope.nodeWasAdded = nodeWasAdded;
|
|
scope.nodeWasRemoved = nodeWasRemoved;
|
|
scope.nodesWereAdded = nodesWereAdded;
|
|
scope.nodesWereRemoved = nodesWereRemoved;
|
|
scope.snapshotNodeList = snapshotNodeList;
|
|
scope.wrappers.Node = Node;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
function findOne(node, selector) {
|
|
var m, el = node.firstElementChild;
|
|
while (el) {
|
|
if (el.matches(selector))
|
|
return el;
|
|
m = findOne(el, selector);
|
|
if (m)
|
|
return m;
|
|
el = el.nextElementSibling;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function findAll(node, selector, results) {
|
|
var el = node.firstElementChild;
|
|
while (el) {
|
|
if (el.matches(selector))
|
|
results[results.length++] = el;
|
|
findAll(el, selector, results);
|
|
el = el.nextElementSibling;
|
|
}
|
|
return results;
|
|
}
|
|
|
|
// find and findAll will only match Simple Selectors,
|
|
// Structural Pseudo Classes are not guarenteed to be correct
|
|
// http://www.w3.org/TR/css3-selectors/#simple-selectors
|
|
|
|
var SelectorsInterface = {
|
|
querySelector: function(selector) {
|
|
return findOne(this, selector);
|
|
},
|
|
querySelectorAll: function(selector) {
|
|
return findAll(this, selector, new NodeList())
|
|
}
|
|
};
|
|
|
|
var GetElementsByInterface = {
|
|
getElementsByTagName: function(tagName) {
|
|
// TODO(arv): Check tagName?
|
|
return this.querySelectorAll(tagName);
|
|
},
|
|
getElementsByClassName: function(className) {
|
|
// TODO(arv): Check className?
|
|
return this.querySelectorAll('.' + className);
|
|
},
|
|
getElementsByTagNameNS: function(ns, tagName) {
|
|
if (ns === '*')
|
|
return this.getElementsByTagName(tagName);
|
|
|
|
// TODO(arv): Check tagName?
|
|
var result = new NodeList;
|
|
var els = this.getElementsByTagName(tagName);
|
|
for (var i = 0, j = 0; i < els.length; i++) {
|
|
if (els[i].namespaceURI === ns)
|
|
result[j++] = els[i];
|
|
}
|
|
result.length = j;
|
|
return result;
|
|
}
|
|
};
|
|
|
|
scope.GetElementsByInterface = GetElementsByInterface;
|
|
scope.SelectorsInterface = SelectorsInterface;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var NodeList = scope.wrappers.NodeList;
|
|
|
|
function forwardElement(node) {
|
|
while (node && node.nodeType !== Node.ELEMENT_NODE) {
|
|
node = node.nextSibling;
|
|
}
|
|
return node;
|
|
}
|
|
|
|
function backwardsElement(node) {
|
|
while (node && node.nodeType !== Node.ELEMENT_NODE) {
|
|
node = node.previousSibling;
|
|
}
|
|
return node;
|
|
}
|
|
|
|
var ParentNodeInterface = {
|
|
get firstElementChild() {
|
|
return forwardElement(this.firstChild);
|
|
},
|
|
|
|
get lastElementChild() {
|
|
return backwardsElement(this.lastChild);
|
|
},
|
|
|
|
get childElementCount() {
|
|
var count = 0;
|
|
for (var child = this.firstElementChild;
|
|
child;
|
|
child = child.nextElementSibling) {
|
|
count++;
|
|
}
|
|
return count;
|
|
},
|
|
|
|
get children() {
|
|
var wrapperList = new NodeList();
|
|
var i = 0;
|
|
for (var child = this.firstElementChild;
|
|
child;
|
|
child = child.nextElementSibling) {
|
|
wrapperList[i++] = child;
|
|
}
|
|
wrapperList.length = i;
|
|
return wrapperList;
|
|
}
|
|
};
|
|
|
|
var ChildNodeInterface = {
|
|
get nextElementSibling() {
|
|
return forwardElement(this.nextSibling);
|
|
},
|
|
|
|
get previousElementSibling() {
|
|
return backwardsElement(this.previousSibling);
|
|
}
|
|
};
|
|
|
|
scope.ChildNodeInterface = ChildNodeInterface;
|
|
scope.ParentNodeInterface = ParentNodeInterface;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var ChildNodeInterface = scope.ChildNodeInterface;
|
|
var Node = scope.wrappers.Node;
|
|
var enqueueMutation = scope.enqueueMutation;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
|
|
var OriginalCharacterData = window.CharacterData;
|
|
|
|
function CharacterData(node) {
|
|
Node.call(this, node);
|
|
}
|
|
CharacterData.prototype = Object.create(Node.prototype);
|
|
mixin(CharacterData.prototype, {
|
|
get textContent() {
|
|
return this.data;
|
|
},
|
|
set textContent(value) {
|
|
this.data = value;
|
|
},
|
|
get data() {
|
|
return this.impl.data;
|
|
},
|
|
set data(value) {
|
|
var oldValue = this.impl.data;
|
|
enqueueMutation(this, 'characterData', {
|
|
oldValue: oldValue
|
|
});
|
|
this.impl.data = value;
|
|
}
|
|
});
|
|
|
|
mixin(CharacterData.prototype, ChildNodeInterface);
|
|
|
|
registerWrapper(OriginalCharacterData, CharacterData,
|
|
document.createTextNode(''));
|
|
|
|
scope.wrappers.CharacterData = CharacterData;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var ChildNodeInterface = scope.ChildNodeInterface;
|
|
var GetElementsByInterface = scope.GetElementsByInterface;
|
|
var Node = scope.wrappers.Node;
|
|
var ParentNodeInterface = scope.ParentNodeInterface;
|
|
var SelectorsInterface = scope.SelectorsInterface;
|
|
var addWrapNodeListMethod = scope.addWrapNodeListMethod;
|
|
var enqueueMutation = scope.enqueueMutation;
|
|
var mixin = scope.mixin;
|
|
var oneOf = scope.oneOf;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var wrappers = scope.wrappers;
|
|
|
|
var OriginalElement = window.Element;
|
|
|
|
var matchesName = oneOf(OriginalElement.prototype, [
|
|
'matches',
|
|
'mozMatchesSelector',
|
|
'msMatchesSelector',
|
|
'webkitMatchesSelector',
|
|
]);
|
|
|
|
var originalMatches = OriginalElement.prototype[matchesName];
|
|
|
|
function invalidateRendererBasedOnAttribute(element, name) {
|
|
// Only invalidate if parent node is a shadow host.
|
|
var p = element.parentNode;
|
|
if (!p || !p.shadowRoot)
|
|
return;
|
|
|
|
var renderer = scope.getRendererForHost(p);
|
|
if (renderer.dependsOnAttribute(name))
|
|
renderer.invalidate();
|
|
}
|
|
|
|
function enqueAttributeChange(element, name, oldValue) {
|
|
// This is not fully spec compliant. We should use localName (which might
|
|
// have a different case than name) and the namespace (which requires us
|
|
// to get the Attr object).
|
|
enqueueMutation(element, 'attributes', {
|
|
name: name,
|
|
namespace: null,
|
|
oldValue: oldValue
|
|
});
|
|
}
|
|
|
|
function Element(node) {
|
|
Node.call(this, node);
|
|
}
|
|
Element.prototype = Object.create(Node.prototype);
|
|
mixin(Element.prototype, {
|
|
createShadowRoot: function() {
|
|
var newShadowRoot = new wrappers.ShadowRoot(this);
|
|
this.impl.polymerShadowRoot_ = newShadowRoot;
|
|
|
|
var renderer = scope.getRendererForHost(this);
|
|
renderer.invalidate();
|
|
|
|
return newShadowRoot;
|
|
},
|
|
|
|
get shadowRoot() {
|
|
return this.impl.polymerShadowRoot_ || null;
|
|
},
|
|
|
|
setAttribute: function(name, value) {
|
|
var oldValue = this.impl.getAttribute(name);
|
|
this.impl.setAttribute(name, value);
|
|
enqueAttributeChange(this, name, oldValue);
|
|
invalidateRendererBasedOnAttribute(this, name);
|
|
},
|
|
|
|
removeAttribute: function(name) {
|
|
var oldValue = this.impl.getAttribute(name);
|
|
this.impl.removeAttribute(name);
|
|
enqueAttributeChange(this, name, oldValue);
|
|
invalidateRendererBasedOnAttribute(this, name);
|
|
},
|
|
|
|
matches: function(selector) {
|
|
return originalMatches.call(this.impl, selector);
|
|
}
|
|
});
|
|
|
|
Element.prototype[matchesName] = function(selector) {
|
|
return this.matches(selector);
|
|
};
|
|
|
|
if (OriginalElement.prototype.webkitCreateShadowRoot) {
|
|
Element.prototype.webkitCreateShadowRoot =
|
|
Element.prototype.createShadowRoot;
|
|
}
|
|
|
|
/**
|
|
* Useful for generating the accessor pair for a property that reflects an
|
|
* attribute.
|
|
*/
|
|
function setterDirtiesAttribute(prototype, propertyName, opt_attrName) {
|
|
var attrName = opt_attrName || propertyName;
|
|
Object.defineProperty(prototype, propertyName, {
|
|
get: function() {
|
|
return this.impl[propertyName];
|
|
},
|
|
set: function(v) {
|
|
this.impl[propertyName] = v;
|
|
invalidateRendererBasedOnAttribute(this, attrName);
|
|
},
|
|
configurable: true,
|
|
enumerable: true
|
|
});
|
|
}
|
|
|
|
setterDirtiesAttribute(Element.prototype, 'id');
|
|
setterDirtiesAttribute(Element.prototype, 'className', 'class');
|
|
|
|
mixin(Element.prototype, ChildNodeInterface);
|
|
mixin(Element.prototype, GetElementsByInterface);
|
|
mixin(Element.prototype, ParentNodeInterface);
|
|
mixin(Element.prototype, SelectorsInterface);
|
|
|
|
registerWrapper(OriginalElement, Element);
|
|
|
|
// TODO(arv): Export setterDirtiesAttribute and apply it to more bindings
|
|
// that reflect attributes.
|
|
scope.matchesName = matchesName;
|
|
scope.wrappers.Element = Element;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var Element = scope.wrappers.Element;
|
|
var defineGetter = scope.defineGetter;
|
|
var enqueueMutation = scope.enqueueMutation;
|
|
var mixin = scope.mixin;
|
|
var nodesWereAdded = scope.nodesWereAdded;
|
|
var nodesWereRemoved = scope.nodesWereRemoved;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var snapshotNodeList = scope.snapshotNodeList;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// innerHTML and outerHTML
|
|
|
|
var escapeRegExp = /&|<|"/g;
|
|
|
|
function escapeReplace(c) {
|
|
switch (c) {
|
|
case '&':
|
|
return '&';
|
|
case '<':
|
|
return '<';
|
|
case '"':
|
|
return '"'
|
|
}
|
|
}
|
|
|
|
function escape(s) {
|
|
return s.replace(escapeRegExp, escapeReplace);
|
|
}
|
|
|
|
// http://www.whatwg.org/specs/web-apps/current-work/#void-elements
|
|
var voidElements = {
|
|
'area': true,
|
|
'base': true,
|
|
'br': true,
|
|
'col': true,
|
|
'command': true,
|
|
'embed': true,
|
|
'hr': true,
|
|
'img': true,
|
|
'input': true,
|
|
'keygen': true,
|
|
'link': true,
|
|
'meta': true,
|
|
'param': true,
|
|
'source': true,
|
|
'track': true,
|
|
'wbr': true
|
|
};
|
|
|
|
function getOuterHTML(node) {
|
|
switch (node.nodeType) {
|
|
case Node.ELEMENT_NODE:
|
|
var tagName = node.tagName.toLowerCase();
|
|
var s = '<' + tagName;
|
|
var attrs = node.attributes;
|
|
for (var i = 0, attr; attr = attrs[i]; i++) {
|
|
s += ' ' + attr.name + '="' + escape(attr.value) + '"';
|
|
}
|
|
s += '>';
|
|
if (voidElements[tagName])
|
|
return s;
|
|
|
|
return s + getInnerHTML(node) + '</' + tagName + '>';
|
|
|
|
case Node.TEXT_NODE:
|
|
return escape(node.nodeValue);
|
|
|
|
case Node.COMMENT_NODE:
|
|
return '<!--' + escape(node.nodeValue) + '-->';
|
|
default:
|
|
console.error(node);
|
|
throw new Error('not implemented');
|
|
}
|
|
}
|
|
|
|
function getInnerHTML(node) {
|
|
var s = '';
|
|
for (var child = node.firstChild; child; child = child.nextSibling) {
|
|
s += getOuterHTML(child);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
function setInnerHTML(node, value, opt_tagName) {
|
|
var tagName = opt_tagName || 'div';
|
|
node.textContent = '';
|
|
var tempElement = unwrap(node.ownerDocument.createElement(tagName));
|
|
tempElement.innerHTML = value;
|
|
var firstChild;
|
|
while (firstChild = tempElement.firstChild) {
|
|
node.appendChild(wrap(firstChild));
|
|
}
|
|
}
|
|
|
|
var OriginalHTMLElement = window.HTMLElement;
|
|
|
|
function HTMLElement(node) {
|
|
Element.call(this, node);
|
|
}
|
|
HTMLElement.prototype = Object.create(Element.prototype);
|
|
mixin(HTMLElement.prototype, {
|
|
get innerHTML() {
|
|
// TODO(arv): This should fallback to this.impl.innerHTML if there
|
|
// are no shadow trees below or above the context node.
|
|
return getInnerHTML(this);
|
|
},
|
|
set innerHTML(value) {
|
|
var removedNodes = snapshotNodeList(this.childNodes);
|
|
|
|
if (this.invalidateShadowRenderer())
|
|
setInnerHTML(this, value, this.tagName);
|
|
else
|
|
this.impl.innerHTML = value;
|
|
var addedNodes = snapshotNodeList(this.childNodes);
|
|
|
|
enqueueMutation(this, 'childList', {
|
|
addedNodes: addedNodes,
|
|
removedNodes: removedNodes
|
|
});
|
|
|
|
nodesWereRemoved(removedNodes);
|
|
nodesWereAdded(addedNodes);
|
|
},
|
|
|
|
get outerHTML() {
|
|
// TODO(arv): This should fallback to HTMLElement_prototype.outerHTML if there
|
|
// are no shadow trees below or above the context node.
|
|
return getOuterHTML(this);
|
|
},
|
|
set outerHTML(value) {
|
|
var p = this.parentNode;
|
|
if (p) {
|
|
p.invalidateShadowRenderer();
|
|
this.impl.outerHTML = value;
|
|
}
|
|
}
|
|
});
|
|
|
|
function getter(name) {
|
|
return function() {
|
|
scope.renderAllPending();
|
|
return this.impl[name];
|
|
};
|
|
}
|
|
|
|
function getterRequiresRendering(name) {
|
|
defineGetter(HTMLElement, name, getter(name));
|
|
}
|
|
|
|
[
|
|
'clientHeight',
|
|
'clientLeft',
|
|
'clientTop',
|
|
'clientWidth',
|
|
'offsetHeight',
|
|
'offsetLeft',
|
|
'offsetTop',
|
|
'offsetWidth',
|
|
'scrollHeight',
|
|
'scrollWidth',
|
|
].forEach(getterRequiresRendering);
|
|
|
|
function getterAndSetterRequiresRendering(name) {
|
|
Object.defineProperty(HTMLElement.prototype, name, {
|
|
get: getter(name),
|
|
set: function(v) {
|
|
scope.renderAllPending();
|
|
this.impl[name] = v;
|
|
},
|
|
configurable: true,
|
|
enumerable: true
|
|
});
|
|
}
|
|
|
|
[
|
|
'scrollLeft',
|
|
'scrollTop',
|
|
].forEach(getterAndSetterRequiresRendering);
|
|
|
|
function methodRequiresRendering(name) {
|
|
Object.defineProperty(HTMLElement.prototype, name, {
|
|
value: function() {
|
|
scope.renderAllPending();
|
|
return this.impl[name].apply(this.impl, arguments);
|
|
},
|
|
configurable: true,
|
|
enumerable: true
|
|
});
|
|
}
|
|
|
|
[
|
|
'getBoundingClientRect',
|
|
'getClientRects',
|
|
'scrollIntoView'
|
|
].forEach(methodRequiresRendering);
|
|
|
|
// HTMLElement is abstract so we use a subclass that has no members.
|
|
registerWrapper(OriginalHTMLElement, HTMLElement,
|
|
document.createElement('b'));
|
|
|
|
scope.wrappers.HTMLElement = HTMLElement;
|
|
|
|
// TODO: Find a better way to share these two with WrapperShadowRoot.
|
|
scope.getInnerHTML = getInnerHTML;
|
|
scope.setInnerHTML = setInnerHTML
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var wrap = scope.wrap;
|
|
|
|
var OriginalHTMLCanvasElement = window.HTMLCanvasElement;
|
|
|
|
function HTMLCanvasElement(node) {
|
|
HTMLElement.call(this, node);
|
|
}
|
|
HTMLCanvasElement.prototype = Object.create(HTMLElement.prototype);
|
|
|
|
mixin(HTMLCanvasElement.prototype, {
|
|
getContext: function() {
|
|
var context = this.impl.getContext.apply(this.impl, arguments);
|
|
return context && wrap(context);
|
|
}
|
|
});
|
|
|
|
registerWrapper(OriginalHTMLCanvasElement, HTMLCanvasElement,
|
|
document.createElement('canvas'));
|
|
|
|
scope.wrappers.HTMLCanvasElement = HTMLCanvasElement;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
|
|
var OriginalHTMLContentElement = window.HTMLContentElement;
|
|
|
|
function HTMLContentElement(node) {
|
|
HTMLElement.call(this, node);
|
|
}
|
|
HTMLContentElement.prototype = Object.create(HTMLElement.prototype);
|
|
mixin(HTMLContentElement.prototype, {
|
|
get select() {
|
|
return this.getAttribute('select');
|
|
},
|
|
set select(value) {
|
|
this.setAttribute('select', value);
|
|
},
|
|
|
|
setAttribute: function(n, v) {
|
|
HTMLElement.prototype.setAttribute.call(this, n, v);
|
|
if (String(n).toLowerCase() === 'select')
|
|
this.invalidateShadowRenderer(true);
|
|
}
|
|
|
|
// getDistributedNodes is added in ShadowRenderer
|
|
|
|
// TODO: attribute boolean resetStyleInheritance;
|
|
});
|
|
|
|
if (OriginalHTMLContentElement)
|
|
registerWrapper(OriginalHTMLContentElement, HTMLContentElement);
|
|
|
|
scope.wrappers.HTMLContentElement = HTMLContentElement;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var rewrap = scope.rewrap;
|
|
|
|
var OriginalHTMLImageElement = window.HTMLImageElement;
|
|
|
|
function HTMLImageElement(node) {
|
|
HTMLElement.call(this, node);
|
|
}
|
|
HTMLImageElement.prototype = Object.create(HTMLElement.prototype);
|
|
|
|
registerWrapper(OriginalHTMLImageElement, HTMLImageElement,
|
|
document.createElement('img'));
|
|
|
|
function Image(width, height) {
|
|
if (!(this instanceof Image)) {
|
|
throw new TypeError(
|
|
'DOM object constructor cannot be called as a function.');
|
|
}
|
|
|
|
var node = unwrap(document.createElement('img'));
|
|
HTMLElement.call(this, node);
|
|
rewrap(node, this);
|
|
|
|
if (width !== undefined)
|
|
node.width = width;
|
|
if (height !== undefined)
|
|
node.height = height;
|
|
}
|
|
|
|
Image.prototype = HTMLImageElement.prototype;
|
|
|
|
scope.wrappers.HTMLImageElement = HTMLImageElement;
|
|
scope.wrappers.Image = Image;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
|
|
var OriginalHTMLShadowElement = window.HTMLShadowElement;
|
|
|
|
function HTMLShadowElement(node) {
|
|
HTMLElement.call(this, node);
|
|
}
|
|
HTMLShadowElement.prototype = Object.create(HTMLElement.prototype);
|
|
mixin(HTMLShadowElement.prototype, {
|
|
// TODO: attribute boolean resetStyleInheritance;
|
|
});
|
|
|
|
if (OriginalHTMLShadowElement)
|
|
registerWrapper(OriginalHTMLShadowElement, HTMLShadowElement);
|
|
|
|
scope.wrappers.HTMLShadowElement = HTMLShadowElement;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var getInnerHTML = scope.getInnerHTML;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var setInnerHTML = scope.setInnerHTML;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
|
|
var contentTable = new WeakMap();
|
|
var templateContentsOwnerTable = new WeakMap();
|
|
|
|
// http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/templates/index.html#dfn-template-contents-owner
|
|
function getTemplateContentsOwner(doc) {
|
|
if (!doc.defaultView)
|
|
return doc;
|
|
var d = templateContentsOwnerTable.get(doc);
|
|
if (!d) {
|
|
// TODO(arv): This should either be a Document or HTMLDocument depending
|
|
// on doc.
|
|
d = doc.implementation.createHTMLDocument('');
|
|
while (d.lastChild) {
|
|
d.removeChild(d.lastChild);
|
|
}
|
|
templateContentsOwnerTable.set(doc, d);
|
|
}
|
|
return d;
|
|
}
|
|
|
|
function extractContent(templateElement) {
|
|
// templateElement is not a wrapper here.
|
|
var doc = getTemplateContentsOwner(templateElement.ownerDocument);
|
|
var df = unwrap(doc.createDocumentFragment());
|
|
var child;
|
|
while (child = templateElement.firstChild) {
|
|
df.appendChild(child);
|
|
}
|
|
return df;
|
|
}
|
|
|
|
var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
|
|
|
|
function HTMLTemplateElement(node) {
|
|
HTMLElement.call(this, node);
|
|
if (!OriginalHTMLTemplateElement) {
|
|
var content = extractContent(node);
|
|
contentTable.set(this, wrap(content));
|
|
}
|
|
}
|
|
HTMLTemplateElement.prototype = Object.create(HTMLElement.prototype);
|
|
|
|
mixin(HTMLTemplateElement.prototype, {
|
|
get content() {
|
|
if (OriginalHTMLTemplateElement)
|
|
return wrap(this.impl.content);
|
|
return contentTable.get(this);
|
|
},
|
|
|
|
get innerHTML() {
|
|
return getInnerHTML(this.content);
|
|
},
|
|
set innerHTML(value) {
|
|
setInnerHTML(this.content, value);
|
|
}
|
|
|
|
// TODO(arv): cloneNode needs to clone content.
|
|
|
|
});
|
|
|
|
if (OriginalHTMLTemplateElement)
|
|
registerWrapper(OriginalHTMLTemplateElement, HTMLTemplateElement);
|
|
|
|
scope.wrappers.HTMLTemplateElement = HTMLTemplateElement;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var registerWrapper = scope.registerWrapper;
|
|
|
|
var OriginalHTMLMediaElement = window.HTMLMediaElement;
|
|
|
|
function HTMLMediaElement(node) {
|
|
HTMLElement.call(this, node);
|
|
}
|
|
HTMLMediaElement.prototype = Object.create(HTMLElement.prototype);
|
|
|
|
registerWrapper(OriginalHTMLMediaElement, HTMLMediaElement,
|
|
document.createElement('audio'));
|
|
|
|
scope.wrappers.HTMLMediaElement = HTMLMediaElement;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLMediaElement = scope.wrappers.HTMLMediaElement;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var rewrap = scope.rewrap;
|
|
|
|
var OriginalHTMLAudioElement = window.HTMLAudioElement;
|
|
|
|
function HTMLAudioElement(node) {
|
|
HTMLMediaElement.call(this, node);
|
|
}
|
|
HTMLAudioElement.prototype = Object.create(HTMLMediaElement.prototype);
|
|
|
|
registerWrapper(OriginalHTMLAudioElement, HTMLAudioElement,
|
|
document.createElement('audio'));
|
|
|
|
function Audio(src) {
|
|
if (!(this instanceof Audio)) {
|
|
throw new TypeError(
|
|
'DOM object constructor cannot be called as a function.');
|
|
}
|
|
|
|
var node = unwrap(document.createElement('audio'));
|
|
HTMLMediaElement.call(this, node);
|
|
rewrap(node, this);
|
|
|
|
node.setAttribute('preload', 'auto');
|
|
if (src !== undefined)
|
|
node.setAttribute('src', src);
|
|
}
|
|
|
|
Audio.prototype = HTMLAudioElement.prototype;
|
|
|
|
scope.wrappers.HTMLAudioElement = HTMLAudioElement;
|
|
scope.wrappers.Audio = Audio;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var rewrap = scope.rewrap;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
|
|
var OriginalHTMLOptionElement = window.HTMLOptionElement;
|
|
|
|
function trimText(s) {
|
|
return s.replace(/\s+/g, ' ').trim();
|
|
}
|
|
|
|
function HTMLOptionElement(node) {
|
|
HTMLElement.call(this, node);
|
|
}
|
|
HTMLOptionElement.prototype = Object.create(HTMLElement.prototype);
|
|
mixin(HTMLOptionElement.prototype, {
|
|
get text() {
|
|
return trimText(this.textContent);
|
|
},
|
|
set text(value) {
|
|
this.textContent = trimText(String(value));
|
|
},
|
|
get form() {
|
|
return wrap(unwrap(this).form);
|
|
}
|
|
});
|
|
|
|
registerWrapper(OriginalHTMLOptionElement, HTMLOptionElement,
|
|
document.createElement('option'));
|
|
|
|
function Option(text, value, defaultSelected, selected) {
|
|
if (!(this instanceof Option)) {
|
|
throw new TypeError(
|
|
'DOM object constructor cannot be called as a function.');
|
|
}
|
|
|
|
var node = unwrap(document.createElement('option'));
|
|
HTMLElement.call(this, node);
|
|
rewrap(node, this);
|
|
|
|
if (text !== undefined)
|
|
node.text = text;
|
|
if (value !== undefined)
|
|
node.setAttribute('value', value);
|
|
if (defaultSelected === true)
|
|
node.setAttribute('selected', '');
|
|
node.selected = selected === true;
|
|
}
|
|
|
|
Option.prototype = HTMLOptionElement.prototype;
|
|
|
|
scope.wrappers.HTMLOptionElement = HTMLOptionElement;
|
|
scope.wrappers.Option = Option;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLContentElement = scope.wrappers.HTMLContentElement;
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
|
|
var HTMLTemplateElement = scope.wrappers.HTMLTemplateElement;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
|
|
var OriginalHTMLUnknownElement = window.HTMLUnknownElement;
|
|
|
|
function HTMLUnknownElement(node) {
|
|
switch (node.localName) {
|
|
case 'content':
|
|
return new HTMLContentElement(node);
|
|
case 'shadow':
|
|
return new HTMLShadowElement(node);
|
|
case 'template':
|
|
return new HTMLTemplateElement(node);
|
|
}
|
|
HTMLElement.call(this, node);
|
|
}
|
|
HTMLUnknownElement.prototype = Object.create(HTMLElement.prototype);
|
|
registerWrapper(OriginalHTMLUnknownElement, HTMLUnknownElement);
|
|
scope.wrappers.HTMLUnknownElement = HTMLUnknownElement;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var unwrapIfNeeded = scope.unwrapIfNeeded;
|
|
var wrap = scope.wrap;
|
|
|
|
var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;
|
|
|
|
function CanvasRenderingContext2D(impl) {
|
|
this.impl = impl;
|
|
}
|
|
|
|
mixin(CanvasRenderingContext2D.prototype, {
|
|
get canvas() {
|
|
return wrap(this.impl.canvas);
|
|
},
|
|
|
|
drawImage: function() {
|
|
arguments[0] = unwrapIfNeeded(arguments[0]);
|
|
this.impl.drawImage.apply(this.impl, arguments);
|
|
},
|
|
|
|
createPattern: function() {
|
|
arguments[0] = unwrap(arguments[0]);
|
|
return this.impl.createPattern.apply(this.impl, arguments);
|
|
}
|
|
});
|
|
|
|
registerWrapper(OriginalCanvasRenderingContext2D, CanvasRenderingContext2D,
|
|
document.createElement('canvas').getContext('2d'));
|
|
|
|
scope.wrappers.CanvasRenderingContext2D = CanvasRenderingContext2D;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrapIfNeeded = scope.unwrapIfNeeded;
|
|
var wrap = scope.wrap;
|
|
|
|
var OriginalWebGLRenderingContext = window.WebGLRenderingContext;
|
|
|
|
// IE10 does not have WebGL.
|
|
if (!OriginalWebGLRenderingContext)
|
|
return;
|
|
|
|
function WebGLRenderingContext(impl) {
|
|
this.impl = impl;
|
|
}
|
|
|
|
mixin(WebGLRenderingContext.prototype, {
|
|
get canvas() {
|
|
return wrap(this.impl.canvas);
|
|
},
|
|
|
|
texImage2D: function() {
|
|
arguments[5] = unwrapIfNeeded(arguments[5]);
|
|
this.impl.texImage2D.apply(this.impl, arguments);
|
|
},
|
|
|
|
texSubImage2D: function() {
|
|
arguments[6] = unwrapIfNeeded(arguments[6]);
|
|
this.impl.texSubImage2D.apply(this.impl, arguments);
|
|
}
|
|
});
|
|
|
|
// Blink/WebKit has broken DOM bindings. Usually we would create an instance
|
|
// of the object and pass it into registerWrapper as a "blueprint" but
|
|
// creating WebGL contexts is expensive and might fail so we use a dummy
|
|
// object with dummy instance properties for these broken browsers.
|
|
var instanceProperties = /WebKit/.test(navigator.userAgent) ?
|
|
{drawingBufferHeight: null, drawingBufferWidth: null} : {};
|
|
|
|
registerWrapper(OriginalWebGLRenderingContext, WebGLRenderingContext,
|
|
instanceProperties);
|
|
|
|
scope.wrappers.WebGLRenderingContext = WebGLRenderingContext;
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var unwrapIfNeeded = scope.unwrapIfNeeded;
|
|
var wrap = scope.wrap;
|
|
|
|
var OriginalRange = window.Range;
|
|
|
|
function Range(impl) {
|
|
this.impl = impl;
|
|
}
|
|
Range.prototype = {
|
|
get startContainer() {
|
|
return wrap(this.impl.startContainer);
|
|
},
|
|
get endContainer() {
|
|
return wrap(this.impl.endContainer);
|
|
},
|
|
get commonAncestorContainer() {
|
|
return wrap(this.impl.commonAncestorContainer);
|
|
},
|
|
setStart: function(refNode,offset) {
|
|
this.impl.setStart(unwrapIfNeeded(refNode), offset);
|
|
},
|
|
setEnd: function(refNode,offset) {
|
|
this.impl.setEnd(unwrapIfNeeded(refNode), offset);
|
|
},
|
|
setStartBefore: function(refNode) {
|
|
this.impl.setStartBefore(unwrapIfNeeded(refNode));
|
|
},
|
|
setStartAfter: function(refNode) {
|
|
this.impl.setStartAfter(unwrapIfNeeded(refNode));
|
|
},
|
|
setEndBefore: function(refNode) {
|
|
this.impl.setEndBefore(unwrapIfNeeded(refNode));
|
|
},
|
|
setEndAfter: function(refNode) {
|
|
this.impl.setEndAfter(unwrapIfNeeded(refNode));
|
|
},
|
|
selectNode: function(refNode) {
|
|
this.impl.selectNode(unwrapIfNeeded(refNode));
|
|
},
|
|
selectNodeContents: function(refNode) {
|
|
this.impl.selectNodeContents(unwrapIfNeeded(refNode));
|
|
},
|
|
compareBoundaryPoints: function(how, sourceRange) {
|
|
return this.impl.compareBoundaryPoints(how, unwrap(sourceRange));
|
|
},
|
|
extractContents: function() {
|
|
return wrap(this.impl.extractContents());
|
|
},
|
|
cloneContents: function() {
|
|
return wrap(this.impl.cloneContents());
|
|
},
|
|
insertNode: function(node) {
|
|
this.impl.insertNode(unwrapIfNeeded(node));
|
|
},
|
|
surroundContents: function(newParent) {
|
|
this.impl.surroundContents(unwrapIfNeeded(newParent));
|
|
},
|
|
cloneRange: function() {
|
|
return wrap(this.impl.cloneRange());
|
|
},
|
|
isPointInRange: function(node, offset) {
|
|
return this.impl.isPointInRange(unwrapIfNeeded(node), offset);
|
|
},
|
|
comparePoint: function(node, offset) {
|
|
return this.impl.comparePoint(unwrapIfNeeded(node), offset);
|
|
},
|
|
intersectsNode: function(node) {
|
|
return this.impl.intersectsNode(unwrapIfNeeded(node));
|
|
}
|
|
};
|
|
|
|
// IE9 does not have createContextualFragment.
|
|
if (OriginalRange.prototype.createContextualFragment) {
|
|
Range.prototype.createContextualFragment = function(html) {
|
|
return wrap(this.impl.createContextualFragment(html));
|
|
};
|
|
}
|
|
|
|
registerWrapper(window.Range, Range, document.createRange());
|
|
|
|
scope.wrappers.Range = Range;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var GetElementsByInterface = scope.GetElementsByInterface;
|
|
var ParentNodeInterface = scope.ParentNodeInterface;
|
|
var SelectorsInterface = scope.SelectorsInterface;
|
|
var mixin = scope.mixin;
|
|
var registerObject = scope.registerObject;
|
|
|
|
var DocumentFragment = registerObject(document.createDocumentFragment());
|
|
mixin(DocumentFragment.prototype, ParentNodeInterface);
|
|
mixin(DocumentFragment.prototype, SelectorsInterface);
|
|
mixin(DocumentFragment.prototype, GetElementsByInterface);
|
|
|
|
var Text = registerObject(document.createTextNode(''));
|
|
var Comment = registerObject(document.createComment(''));
|
|
|
|
scope.wrappers.Comment = Comment;
|
|
scope.wrappers.DocumentFragment = DocumentFragment;
|
|
scope.wrappers.Text = Text;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var DocumentFragment = scope.wrappers.DocumentFragment;
|
|
var elementFromPoint = scope.elementFromPoint;
|
|
var getInnerHTML = scope.getInnerHTML;
|
|
var mixin = scope.mixin;
|
|
var rewrap = scope.rewrap;
|
|
var setInnerHTML = scope.setInnerHTML;
|
|
var unwrap = scope.unwrap;
|
|
|
|
var shadowHostTable = new WeakMap();
|
|
var nextOlderShadowTreeTable = new WeakMap();
|
|
|
|
function ShadowRoot(hostWrapper) {
|
|
var node = unwrap(hostWrapper.impl.ownerDocument.createDocumentFragment());
|
|
DocumentFragment.call(this, node);
|
|
|
|
// createDocumentFragment associates the node with a wrapper
|
|
// DocumentFragment instance. Override that.
|
|
rewrap(node, this);
|
|
|
|
var oldShadowRoot = hostWrapper.shadowRoot;
|
|
nextOlderShadowTreeTable.set(this, oldShadowRoot);
|
|
|
|
shadowHostTable.set(this, hostWrapper);
|
|
}
|
|
ShadowRoot.prototype = Object.create(DocumentFragment.prototype);
|
|
mixin(ShadowRoot.prototype, {
|
|
get innerHTML() {
|
|
return getInnerHTML(this);
|
|
},
|
|
set innerHTML(value) {
|
|
setInnerHTML(this, value);
|
|
this.invalidateShadowRenderer();
|
|
},
|
|
|
|
get olderShadowRoot() {
|
|
return nextOlderShadowTreeTable.get(this) || null;
|
|
},
|
|
|
|
get host() {
|
|
return shadowHostTable.get(this) || null;
|
|
},
|
|
|
|
invalidateShadowRenderer: function() {
|
|
return shadowHostTable.get(this).invalidateShadowRenderer();
|
|
},
|
|
|
|
elementFromPoint: function(x, y) {
|
|
return elementFromPoint(this, this.ownerDocument, x, y);
|
|
},
|
|
|
|
getElementById: function(id) {
|
|
return this.querySelector('#' + id);
|
|
}
|
|
});
|
|
|
|
scope.wrappers.ShadowRoot = ShadowRoot;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var Element = scope.wrappers.Element;
|
|
var HTMLContentElement = scope.wrappers.HTMLContentElement;
|
|
var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
|
|
var Node = scope.wrappers.Node;
|
|
var ShadowRoot = scope.wrappers.ShadowRoot;
|
|
var assert = scope.assert;
|
|
var mixin = scope.mixin;
|
|
var oneOf = scope.oneOf;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
|
|
/**
|
|
* Updates the fields of a wrapper to a snapshot of the logical DOM as needed.
|
|
* Up means parentNode
|
|
* Sideways means previous and next sibling.
|
|
* @param {!Node} wrapper
|
|
*/
|
|
function updateWrapperUpAndSideways(wrapper) {
|
|
wrapper.previousSibling_ = wrapper.previousSibling;
|
|
wrapper.nextSibling_ = wrapper.nextSibling;
|
|
wrapper.parentNode_ = wrapper.parentNode;
|
|
}
|
|
|
|
/**
|
|
* Updates the fields of a wrapper to a snapshot of the logical DOM as needed.
|
|
* Down means first and last child
|
|
* @param {!Node} wrapper
|
|
*/
|
|
function updateWrapperDown(wrapper) {
|
|
wrapper.firstChild_ = wrapper.firstChild;
|
|
wrapper.lastChild_ = wrapper.lastChild;
|
|
}
|
|
|
|
function updateAllChildNodes(parentNodeWrapper) {
|
|
assert(parentNodeWrapper instanceof Node);
|
|
for (var childWrapper = parentNodeWrapper.firstChild;
|
|
childWrapper;
|
|
childWrapper = childWrapper.nextSibling) {
|
|
updateWrapperUpAndSideways(childWrapper);
|
|
}
|
|
updateWrapperDown(parentNodeWrapper);
|
|
}
|
|
|
|
function insertBefore(parentNodeWrapper, newChildWrapper, refChildWrapper) {
|
|
var parentNode = unwrap(parentNodeWrapper);
|
|
var newChild = unwrap(newChildWrapper);
|
|
var refChild = refChildWrapper ? unwrap(refChildWrapper) : null;
|
|
|
|
remove(newChildWrapper);
|
|
updateWrapperUpAndSideways(newChildWrapper);
|
|
|
|
if (!refChildWrapper) {
|
|
parentNodeWrapper.lastChild_ = parentNodeWrapper.lastChild;
|
|
if (parentNodeWrapper.lastChild === parentNodeWrapper.firstChild)
|
|
parentNodeWrapper.firstChild_ = parentNodeWrapper.firstChild;
|
|
|
|
var lastChildWrapper = wrap(parentNode.lastChild);
|
|
if (lastChildWrapper)
|
|
lastChildWrapper.nextSibling_ = lastChildWrapper.nextSibling;
|
|
} else {
|
|
if (parentNodeWrapper.firstChild === refChildWrapper)
|
|
parentNodeWrapper.firstChild_ = refChildWrapper;
|
|
|
|
refChildWrapper.previousSibling_ = refChildWrapper.previousSibling;
|
|
}
|
|
|
|
parentNode.insertBefore(newChild, refChild);
|
|
}
|
|
|
|
function remove(nodeWrapper) {
|
|
var node = unwrap(nodeWrapper)
|
|
var parentNode = node.parentNode;
|
|
if (!parentNode)
|
|
return;
|
|
|
|
var parentNodeWrapper = wrap(parentNode);
|
|
updateWrapperUpAndSideways(nodeWrapper);
|
|
|
|
if (nodeWrapper.previousSibling)
|
|
nodeWrapper.previousSibling.nextSibling_ = nodeWrapper;
|
|
if (nodeWrapper.nextSibling)
|
|
nodeWrapper.nextSibling.previousSibling_ = nodeWrapper;
|
|
|
|
if (parentNodeWrapper.lastChild === nodeWrapper)
|
|
parentNodeWrapper.lastChild_ = nodeWrapper;
|
|
if (parentNodeWrapper.firstChild === nodeWrapper)
|
|
parentNodeWrapper.firstChild_ = nodeWrapper;
|
|
|
|
parentNode.removeChild(node);
|
|
}
|
|
|
|
var distributedChildNodesTable = new WeakMap();
|
|
var eventParentsTable = new WeakMap();
|
|
var insertionParentTable = new WeakMap();
|
|
var rendererForHostTable = new WeakMap();
|
|
|
|
function distributeChildToInsertionPoint(child, insertionPoint) {
|
|
getDistributedChildNodes(insertionPoint).push(child);
|
|
assignToInsertionPoint(child, insertionPoint);
|
|
|
|
var eventParents = eventParentsTable.get(child);
|
|
if (!eventParents)
|
|
eventParentsTable.set(child, eventParents = []);
|
|
eventParents.push(insertionPoint);
|
|
}
|
|
|
|
function resetDistributedChildNodes(insertionPoint) {
|
|
distributedChildNodesTable.set(insertionPoint, []);
|
|
}
|
|
|
|
function getDistributedChildNodes(insertionPoint) {
|
|
return distributedChildNodesTable.get(insertionPoint);
|
|
}
|
|
|
|
function getChildNodesSnapshot(node) {
|
|
var result = [], i = 0;
|
|
for (var child = node.firstChild; child; child = child.nextSibling) {
|
|
result[i++] = child;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Visits all nodes in the tree that fulfils the |predicate|. If the |visitor|
|
|
* function returns |false| the traversal is aborted.
|
|
* @param {!Node} tree
|
|
* @param {function(!Node) : boolean} predicate
|
|
* @param {function(!Node) : *} visitor
|
|
*/
|
|
function visit(tree, predicate, visitor) {
|
|
// This operates on logical DOM.
|
|
for (var node = tree.firstChild; node; node = node.nextSibling) {
|
|
if (predicate(node)) {
|
|
if (visitor(node) === false)
|
|
return;
|
|
} else {
|
|
visit(node, predicate, visitor);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Matching Insertion Points
|
|
// http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#matching-insertion-points
|
|
|
|
// TODO(arv): Verify this... I don't remember why I picked this regexp.
|
|
var selectorMatchRegExp = /^[*.:#[a-zA-Z_|]/;
|
|
|
|
var allowedPseudoRegExp = new RegExp('^:(' + [
|
|
'link',
|
|
'visited',
|
|
'target',
|
|
'enabled',
|
|
'disabled',
|
|
'checked',
|
|
'indeterminate',
|
|
'nth-child',
|
|
'nth-last-child',
|
|
'nth-of-type',
|
|
'nth-last-of-type',
|
|
'first-child',
|
|
'last-child',
|
|
'first-of-type',
|
|
'last-of-type',
|
|
'only-of-type',
|
|
].join('|') + ')');
|
|
|
|
|
|
/**
|
|
* @param {Element} node
|
|
* @oaram {Element} point The insertion point element.
|
|
* @return {boolean} Whether the node matches the insertion point.
|
|
*/
|
|
function matchesCriteria(node, point) {
|
|
var select = point.getAttribute('select');
|
|
if (!select)
|
|
return true;
|
|
|
|
// Here we know the select attribute is a non empty string.
|
|
select = select.trim();
|
|
if (!select)
|
|
return true;
|
|
|
|
if (!(node instanceof Element))
|
|
return false;
|
|
|
|
// TODO(arv): This does not seem right. Need to check for a simple selector.
|
|
if (!selectorMatchRegExp.test(select))
|
|
return false;
|
|
|
|
if (select[0] === ':' && !allowedPseudoRegExp.test(select))
|
|
return false;
|
|
|
|
try {
|
|
return node.matches(select);
|
|
} catch (ex) {
|
|
// Invalid selector.
|
|
return false;
|
|
}
|
|
}
|
|
|
|
var request = oneOf(window, [
|
|
'requestAnimationFrame',
|
|
'mozRequestAnimationFrame',
|
|
'webkitRequestAnimationFrame',
|
|
'setTimeout'
|
|
]);
|
|
|
|
var pendingDirtyRenderers = [];
|
|
var renderTimer;
|
|
|
|
function renderAllPending() {
|
|
for (var i = 0; i < pendingDirtyRenderers.length; i++) {
|
|
pendingDirtyRenderers[i].render();
|
|
}
|
|
pendingDirtyRenderers = [];
|
|
}
|
|
|
|
function handleRequestAnimationFrame() {
|
|
renderTimer = null;
|
|
renderAllPending();
|
|
}
|
|
|
|
/**
|
|
* Returns existing shadow renderer for a host or creates it if it is needed.
|
|
* @params {!Element} host
|
|
* @return {!ShadowRenderer}
|
|
*/
|
|
function getRendererForHost(host) {
|
|
var renderer = rendererForHostTable.get(host);
|
|
if (!renderer) {
|
|
renderer = new ShadowRenderer(host);
|
|
rendererForHostTable.set(host, renderer);
|
|
}
|
|
return renderer;
|
|
}
|
|
|
|
function getShadowRootAncestor(node) {
|
|
for (; node; node = node.parentNode) {
|
|
if (node instanceof ShadowRoot)
|
|
return node;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function getRendererForShadowRoot(shadowRoot) {
|
|
return getRendererForHost(shadowRoot.host);
|
|
}
|
|
|
|
var spliceDiff = new ArraySplice();
|
|
spliceDiff.equals = function(renderNode, rawNode) {
|
|
return unwrap(renderNode.node) === rawNode;
|
|
};
|
|
|
|
/**
|
|
* RenderNode is used as an in memory "render tree". When we render the
|
|
* composed tree we create a tree of RenderNodes, then we diff this against
|
|
* the real DOM tree and make minimal changes as needed.
|
|
*/
|
|
function RenderNode(node) {
|
|
this.skip = false;
|
|
this.node = node;
|
|
this.childNodes = [];
|
|
}
|
|
|
|
RenderNode.prototype = {
|
|
append: function(node) {
|
|
var rv = new RenderNode(node);
|
|
this.childNodes.push(rv);
|
|
return rv;
|
|
},
|
|
|
|
sync: function(opt_added) {
|
|
if (this.skip)
|
|
return;
|
|
|
|
var nodeWrapper = this.node;
|
|
// plain array of RenderNodes
|
|
var newChildren = this.childNodes;
|
|
// plain array of real nodes.
|
|
var oldChildren = getChildNodesSnapshot(unwrap(nodeWrapper));
|
|
var added = opt_added || new WeakMap();
|
|
|
|
var splices = spliceDiff.calculateSplices(newChildren, oldChildren);
|
|
|
|
var newIndex = 0, oldIndex = 0;
|
|
var lastIndex = 0;
|
|
for (var i = 0; i < splices.length; i++) {
|
|
var splice = splices[i];
|
|
for (; lastIndex < splice.index; lastIndex++) {
|
|
oldIndex++;
|
|
newChildren[newIndex++].sync(added);
|
|
}
|
|
|
|
var removedCount = splice.removed.length;
|
|
for (var j = 0; j < removedCount; j++) {
|
|
var wrapper = wrap(oldChildren[oldIndex++]);
|
|
if (!added.get(wrapper))
|
|
remove(wrapper);
|
|
}
|
|
|
|
var addedCount = splice.addedCount;
|
|
var refNode = oldChildren[oldIndex] && wrap(oldChildren[oldIndex]);
|
|
for (var j = 0; j < addedCount; j++) {
|
|
var newChildRenderNode = newChildren[newIndex++];
|
|
var newChildWrapper = newChildRenderNode.node;
|
|
insertBefore(nodeWrapper, newChildWrapper, refNode);
|
|
|
|
// Keep track of added so that we do not remove the node after it
|
|
// has been added.
|
|
added.set(newChildWrapper, true);
|
|
|
|
newChildRenderNode.sync(added);
|
|
}
|
|
|
|
lastIndex += addedCount;
|
|
}
|
|
|
|
for (var i = lastIndex; i < newChildren.length; i++) {
|
|
newChildren[i].sync(added);
|
|
}
|
|
}
|
|
};
|
|
|
|
function ShadowRenderer(host) {
|
|
this.host = host;
|
|
this.dirty = false;
|
|
this.invalidateAttributes();
|
|
this.associateNode(host);
|
|
}
|
|
|
|
ShadowRenderer.prototype = {
|
|
|
|
// http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#rendering-shadow-trees
|
|
render: function(opt_renderNode) {
|
|
if (!this.dirty)
|
|
return;
|
|
|
|
this.invalidateAttributes();
|
|
this.treeComposition();
|
|
|
|
var host = this.host;
|
|
var shadowRoot = host.shadowRoot;
|
|
|
|
this.associateNode(host);
|
|
var topMostRenderer = !renderNode;
|
|
var renderNode = opt_renderNode || new RenderNode(host);
|
|
|
|
for (var node = shadowRoot.firstChild; node; node = node.nextSibling) {
|
|
this.renderNode(shadowRoot, renderNode, node, false);
|
|
}
|
|
|
|
if (topMostRenderer)
|
|
renderNode.sync();
|
|
|
|
this.dirty = false;
|
|
},
|
|
|
|
invalidate: function() {
|
|
if (!this.dirty) {
|
|
this.dirty = true;
|
|
pendingDirtyRenderers.push(this);
|
|
if (renderTimer)
|
|
return;
|
|
renderTimer = window[request](handleRequestAnimationFrame, 0);
|
|
}
|
|
},
|
|
|
|
renderNode: function(shadowRoot, renderNode, node, isNested) {
|
|
if (isShadowHost(node)) {
|
|
renderNode = renderNode.append(node);
|
|
var renderer = getRendererForHost(node);
|
|
renderer.dirty = true; // Need to rerender due to reprojection.
|
|
renderer.render(renderNode);
|
|
} else if (isInsertionPoint(node)) {
|
|
this.renderInsertionPoint(shadowRoot, renderNode, node, isNested);
|
|
} else if (isShadowInsertionPoint(node)) {
|
|
this.renderShadowInsertionPoint(shadowRoot, renderNode, node);
|
|
} else {
|
|
this.renderAsAnyDomTree(shadowRoot, renderNode, node, isNested);
|
|
}
|
|
},
|
|
|
|
renderAsAnyDomTree: function(shadowRoot, renderNode, node, isNested) {
|
|
renderNode = renderNode.append(node);
|
|
|
|
if (isShadowHost(node)) {
|
|
var renderer = getRendererForHost(node);
|
|
renderNode.skip = !renderer.dirty;
|
|
renderer.render(renderNode);
|
|
} else {
|
|
for (var child = node.firstChild; child; child = child.nextSibling) {
|
|
this.renderNode(shadowRoot, renderNode, child, isNested);
|
|
}
|
|
}
|
|
},
|
|
|
|
renderInsertionPoint: function(shadowRoot, renderNode, insertionPoint,
|
|
isNested) {
|
|
var distributedChildNodes = getDistributedChildNodes(insertionPoint);
|
|
if (distributedChildNodes.length) {
|
|
this.associateNode(insertionPoint);
|
|
|
|
for (var i = 0; i < distributedChildNodes.length; i++) {
|
|
var child = distributedChildNodes[i];
|
|
if (isInsertionPoint(child) && isNested)
|
|
this.renderInsertionPoint(shadowRoot, renderNode, child, isNested);
|
|
else
|
|
this.renderAsAnyDomTree(shadowRoot, renderNode, child, isNested);
|
|
}
|
|
} else {
|
|
this.renderFallbackContent(shadowRoot, renderNode, insertionPoint);
|
|
}
|
|
this.associateNode(insertionPoint.parentNode);
|
|
},
|
|
|
|
renderShadowInsertionPoint: function(shadowRoot, renderNode,
|
|
shadowInsertionPoint) {
|
|
var nextOlderTree = shadowRoot.olderShadowRoot;
|
|
if (nextOlderTree) {
|
|
assignToInsertionPoint(nextOlderTree, shadowInsertionPoint);
|
|
this.associateNode(shadowInsertionPoint.parentNode);
|
|
for (var node = nextOlderTree.firstChild;
|
|
node;
|
|
node = node.nextSibling) {
|
|
this.renderNode(nextOlderTree, renderNode, node, true);
|
|
}
|
|
} else {
|
|
this.renderFallbackContent(shadowRoot, renderNode,
|
|
shadowInsertionPoint);
|
|
}
|
|
},
|
|
|
|
renderFallbackContent: function(shadowRoot, renderNode, fallbackHost) {
|
|
this.associateNode(fallbackHost);
|
|
this.associateNode(fallbackHost.parentNode);
|
|
for (var node = fallbackHost.firstChild; node; node = node.nextSibling) {
|
|
this.renderAsAnyDomTree(shadowRoot, renderNode, node, false);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Invalidates the attributes used to keep track of which attributes may
|
|
* cause the renderer to be invalidated.
|
|
*/
|
|
invalidateAttributes: function() {
|
|
this.attributes = Object.create(null);
|
|
},
|
|
|
|
/**
|
|
* Parses the selector and makes this renderer dependent on the attribute
|
|
* being used in the selector.
|
|
* @param {string} selector
|
|
*/
|
|
updateDependentAttributes: function(selector) {
|
|
if (!selector)
|
|
return;
|
|
|
|
var attributes = this.attributes;
|
|
|
|
// .class
|
|
if (/\.\w+/.test(selector))
|
|
attributes['class'] = true;
|
|
|
|
// #id
|
|
if (/#\w+/.test(selector))
|
|
attributes['id'] = true;
|
|
|
|
selector.replace(/\[\s*([^\s=\|~\]]+)/g, function(_, name) {
|
|
attributes[name] = true;
|
|
});
|
|
|
|
// Pseudo selectors have been removed from the spec.
|
|
},
|
|
|
|
dependsOnAttribute: function(name) {
|
|
return this.attributes[name];
|
|
},
|
|
|
|
// http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-distribution-algorithm
|
|
distribute: function(tree, pool) {
|
|
var self = this;
|
|
|
|
visit(tree, isActiveInsertionPoint,
|
|
function(insertionPoint) {
|
|
resetDistributedChildNodes(insertionPoint);
|
|
self.updateDependentAttributes(
|
|
insertionPoint.getAttribute('select'));
|
|
|
|
for (var i = 0; i < pool.length; i++) { // 1.2
|
|
var node = pool[i]; // 1.2.1
|
|
if (node === undefined) // removed
|
|
continue;
|
|
if (matchesCriteria(node, insertionPoint)) { // 1.2.2
|
|
distributeChildToInsertionPoint(node, insertionPoint); // 1.2.2.1
|
|
pool[i] = undefined; // 1.2.2.2
|
|
}
|
|
}
|
|
});
|
|
},
|
|
|
|
// http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-tree-composition
|
|
treeComposition: function () {
|
|
var shadowHost = this.host;
|
|
var tree = shadowHost.shadowRoot; // 1.
|
|
var pool = []; // 2.
|
|
|
|
for (var child = shadowHost.firstChild;
|
|
child;
|
|
child = child.nextSibling) { // 3.
|
|
if (isInsertionPoint(child)) { // 3.2.
|
|
var reprojected = getDistributedChildNodes(child); // 3.2.1.
|
|
// if reprojected is undef... reset it?
|
|
if (!reprojected || !reprojected.length) // 3.2.2.
|
|
reprojected = getChildNodesSnapshot(child);
|
|
pool.push.apply(pool, reprojected); // 3.2.3.
|
|
} else {
|
|
pool.push(child); // 3.3.
|
|
}
|
|
}
|
|
|
|
var shadowInsertionPoint, point;
|
|
while (tree) { // 4.
|
|
// 4.1.
|
|
shadowInsertionPoint = undefined; // Reset every iteration.
|
|
visit(tree, isActiveShadowInsertionPoint, function(point) {
|
|
shadowInsertionPoint = point;
|
|
return false;
|
|
});
|
|
point = shadowInsertionPoint;
|
|
|
|
this.distribute(tree, pool); // 4.2.
|
|
if (point) { // 4.3.
|
|
var nextOlderTree = tree.olderShadowRoot; // 4.3.1.
|
|
if (!nextOlderTree) {
|
|
break; // 4.3.1.1.
|
|
} else {
|
|
tree = nextOlderTree; // 4.3.2.2.
|
|
assignToInsertionPoint(tree, point); // 4.3.2.2.
|
|
continue; // 4.3.2.3.
|
|
}
|
|
} else {
|
|
break; // 4.4.
|
|
}
|
|
}
|
|
},
|
|
|
|
associateNode: function(node) {
|
|
node.impl.polymerShadowRenderer_ = this;
|
|
}
|
|
};
|
|
|
|
function isInsertionPoint(node) {
|
|
// Should this include <shadow>?
|
|
return node instanceof HTMLContentElement;
|
|
}
|
|
|
|
function isActiveInsertionPoint(node) {
|
|
// <content> inside another <content> or <shadow> is considered inactive.
|
|
return node instanceof HTMLContentElement;
|
|
}
|
|
|
|
function isShadowInsertionPoint(node) {
|
|
return node instanceof HTMLShadowElement;
|
|
}
|
|
|
|
function isActiveShadowInsertionPoint(node) {
|
|
// <shadow> inside another <content> or <shadow> is considered inactive.
|
|
return node instanceof HTMLShadowElement;
|
|
}
|
|
|
|
function isShadowHost(shadowHost) {
|
|
return shadowHost.shadowRoot;
|
|
}
|
|
|
|
function getShadowTrees(host) {
|
|
var trees = [];
|
|
|
|
for (var tree = host.shadowRoot; tree; tree = tree.olderShadowRoot) {
|
|
trees.push(tree);
|
|
}
|
|
return trees;
|
|
}
|
|
|
|
function assignToInsertionPoint(tree, point) {
|
|
insertionParentTable.set(tree, point);
|
|
}
|
|
|
|
// http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#rendering-shadow-trees
|
|
function render(host) {
|
|
new ShadowRenderer(host).render();
|
|
};
|
|
|
|
// Need to rerender shadow host when:
|
|
//
|
|
// - a direct child to the ShadowRoot is added or removed
|
|
// - a direct child to the host is added or removed
|
|
// - a new shadow root is created
|
|
// - a direct child to a content/shadow element is added or removed
|
|
// - a sibling to a content/shadow element is added or removed
|
|
// - content[select] is changed
|
|
// - an attribute in a direct child to a host is modified
|
|
|
|
/**
|
|
* This gets called when a node was added or removed to it.
|
|
*/
|
|
Node.prototype.invalidateShadowRenderer = function(force) {
|
|
var renderer = this.impl.polymerShadowRenderer_;
|
|
if (renderer) {
|
|
renderer.invalidate();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
};
|
|
|
|
HTMLContentElement.prototype.getDistributedNodes = function() {
|
|
// TODO(arv): We should only rerender the dirty ancestor renderers (from
|
|
// the root and down).
|
|
renderAllPending();
|
|
return getDistributedChildNodes(this);
|
|
};
|
|
|
|
HTMLShadowElement.prototype.nodeIsInserted_ =
|
|
HTMLContentElement.prototype.nodeIsInserted_ = function() {
|
|
// Invalidate old renderer if any.
|
|
this.invalidateShadowRenderer();
|
|
|
|
var shadowRoot = getShadowRootAncestor(this);
|
|
var renderer;
|
|
if (shadowRoot)
|
|
renderer = getRendererForShadowRoot(shadowRoot);
|
|
this.impl.polymerShadowRenderer_ = renderer;
|
|
if (renderer)
|
|
renderer.invalidate();
|
|
};
|
|
|
|
scope.eventParentsTable = eventParentsTable;
|
|
scope.getRendererForHost = getRendererForHost;
|
|
scope.getShadowTrees = getShadowTrees;
|
|
scope.insertionParentTable = insertionParentTable;
|
|
scope.renderAllPending = renderAllPending;
|
|
|
|
// Exposed for testing
|
|
scope.visual = {
|
|
insertBefore: insertBefore,
|
|
remove: remove,
|
|
};
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var HTMLElement = scope.wrappers.HTMLElement;
|
|
var assert = scope.assert;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
|
|
var elementsWithFormProperty = [
|
|
'HTMLButtonElement',
|
|
'HTMLFieldSetElement',
|
|
'HTMLInputElement',
|
|
'HTMLKeygenElement',
|
|
'HTMLLabelElement',
|
|
'HTMLLegendElement',
|
|
'HTMLObjectElement',
|
|
// HTMLOptionElement is handled in HTMLOptionElement.js
|
|
'HTMLOutputElement',
|
|
'HTMLSelectElement',
|
|
'HTMLTextAreaElement',
|
|
];
|
|
|
|
function createWrapperConstructor(name) {
|
|
if (!window[name])
|
|
return;
|
|
|
|
// Ensure we are not overriding an already existing constructor.
|
|
assert(!scope.wrappers[name]);
|
|
|
|
var GeneratedWrapper = function(node) {
|
|
// At this point all of them extend HTMLElement.
|
|
HTMLElement.call(this, node);
|
|
}
|
|
GeneratedWrapper.prototype = Object.create(HTMLElement.prototype);
|
|
mixin(GeneratedWrapper.prototype, {
|
|
get form() {
|
|
return wrap(unwrap(this).form);
|
|
},
|
|
});
|
|
|
|
registerWrapper(window[name], GeneratedWrapper,
|
|
document.createElement(name.slice(4, -7)));
|
|
scope.wrappers[name] = GeneratedWrapper;
|
|
}
|
|
|
|
elementsWithFormProperty.forEach(createWrapperConstructor);
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var GetElementsByInterface = scope.GetElementsByInterface;
|
|
var Node = scope.wrappers.Node;
|
|
var ParentNodeInterface = scope.ParentNodeInterface;
|
|
var SelectorsInterface = scope.SelectorsInterface;
|
|
var ShadowRoot = scope.wrappers.ShadowRoot;
|
|
var defineWrapGetter = scope.defineWrapGetter;
|
|
var elementFromPoint = scope.elementFromPoint;
|
|
var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
|
|
var matchesName = scope.matchesName;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var wrap = scope.wrap;
|
|
var wrapEventTargetMethods = scope.wrapEventTargetMethods;
|
|
var wrapNodeList = scope.wrapNodeList;
|
|
|
|
var implementationTable = new WeakMap();
|
|
|
|
function Document(node) {
|
|
Node.call(this, node);
|
|
}
|
|
Document.prototype = Object.create(Node.prototype);
|
|
|
|
defineWrapGetter(Document, 'documentElement');
|
|
|
|
// Conceptually both body and head can be in a shadow but suporting that seems
|
|
// overkill at this point.
|
|
defineWrapGetter(Document, 'body');
|
|
defineWrapGetter(Document, 'head');
|
|
|
|
// document cannot be overridden so we override a bunch of its methods
|
|
// directly on the instance.
|
|
|
|
function wrapMethod(name) {
|
|
var original = document[name];
|
|
Document.prototype[name] = function() {
|
|
return wrap(original.apply(this.impl, arguments));
|
|
};
|
|
}
|
|
|
|
[
|
|
'createComment',
|
|
'createDocumentFragment',
|
|
'createElement',
|
|
'createElementNS',
|
|
'createEvent',
|
|
'createEventNS',
|
|
'createRange',
|
|
'createTextNode',
|
|
'getElementById',
|
|
].forEach(wrapMethod);
|
|
|
|
var originalAdoptNode = document.adoptNode;
|
|
|
|
function adoptNodeNoRemove(node, doc) {
|
|
originalAdoptNode.call(doc.impl, unwrap(node));
|
|
adoptSubtree(node, doc);
|
|
}
|
|
|
|
function adoptSubtree(node, doc) {
|
|
if (node.shadowRoot)
|
|
doc.adoptNode(node.shadowRoot);
|
|
if (node instanceof ShadowRoot)
|
|
adoptOlderShadowRoots(node, doc);
|
|
for (var child = node.firstChild; child; child = child.nextSibling) {
|
|
adoptSubtree(child, doc);
|
|
}
|
|
}
|
|
|
|
function adoptOlderShadowRoots(shadowRoot, doc) {
|
|
var oldShadowRoot = shadowRoot.olderShadowRoot;
|
|
if (oldShadowRoot)
|
|
doc.adoptNode(oldShadowRoot);
|
|
}
|
|
|
|
var originalImportNode = document.importNode;
|
|
|
|
mixin(Document.prototype, {
|
|
adoptNode: function(node) {
|
|
if (node.parentNode)
|
|
node.parentNode.removeChild(node);
|
|
adoptNodeNoRemove(node, this);
|
|
return node;
|
|
},
|
|
elementFromPoint: function(x, y) {
|
|
return elementFromPoint(this, this, x, y);
|
|
},
|
|
importNode: function(node, deep) {
|
|
// We need to manually walk the tree to ensure we do not include rendered
|
|
// shadow trees.
|
|
var clone = wrap(originalImportNode.call(this.impl, unwrap(node), false));
|
|
if (deep) {
|
|
for (var child = node.firstChild; child; child = child.nextSibling) {
|
|
clone.appendChild(this.importNode(child, true));
|
|
}
|
|
}
|
|
return clone;
|
|
}
|
|
});
|
|
|
|
if (document.register) {
|
|
var originalRegister = document.register;
|
|
Document.prototype.register = function(tagName, object) {
|
|
var prototype = object.prototype;
|
|
|
|
// If we already used the object as a prototype for another custom
|
|
// element.
|
|
if (scope.nativePrototypeTable.get(prototype)) {
|
|
// TODO(arv): DOMException
|
|
throw new Error('NotSupportedError');
|
|
}
|
|
|
|
// Find first object on the prototype chain that already have a native
|
|
// prototype. Keep track of all the objects before that so we can create
|
|
// a similar structure for the native case.
|
|
var proto = Object.getPrototypeOf(prototype);
|
|
var nativePrototype;
|
|
var prototypes = [];
|
|
while (proto) {
|
|
nativePrototype = scope.nativePrototypeTable.get(proto);
|
|
if (nativePrototype)
|
|
break;
|
|
prototypes.push(proto);
|
|
proto = Object.getPrototypeOf(proto);
|
|
}
|
|
|
|
if (!nativePrototype) {
|
|
// TODO(arv): DOMException
|
|
throw new Error('NotSupportedError');
|
|
}
|
|
|
|
// This works by creating a new prototype object that is empty, but has
|
|
// the native prototype as its proto. The original prototype object
|
|
// passed into register is used as the wrapper prototype.
|
|
|
|
var newPrototype = Object.create(nativePrototype);
|
|
for (var i = prototypes.length - 1; i >= 0; i--) {
|
|
newPrototype = Object.create(newPrototype);
|
|
}
|
|
|
|
// Add callbacks if present.
|
|
// Names are taken from:
|
|
// https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit/Source/bindings/v8/CustomElementConstructorBuilder.cpp&sq=package:chromium&type=cs&l=156
|
|
// and not from the spec since the spec is out of date.
|
|
[
|
|
'createdCallback',
|
|
'enteredViewCallback',
|
|
'leftViewCallback',
|
|
'attributeChangedCallback',
|
|
].forEach(function(name) {
|
|
var f = prototype[name];
|
|
if (!f)
|
|
return;
|
|
newPrototype[name] = function() {
|
|
f.apply(wrap(this), arguments);
|
|
};
|
|
});
|
|
|
|
var p = {prototype: newPrototype};
|
|
if (object.extends)
|
|
p.extends = object.extends;
|
|
var nativeConstructor = originalRegister.call(unwrap(this), tagName, p);
|
|
|
|
function GeneratedWrapper(node) {
|
|
if (!node) {
|
|
if (object.extends) {
|
|
return document.createElement(object.extends, tagName);
|
|
} else {
|
|
return document.createElement(tagName);
|
|
}
|
|
}
|
|
this.impl = node;
|
|
}
|
|
GeneratedWrapper.prototype = prototype;
|
|
GeneratedWrapper.prototype.constructor = GeneratedWrapper;
|
|
|
|
scope.constructorTable.set(newPrototype, GeneratedWrapper);
|
|
scope.nativePrototypeTable.set(prototype, newPrototype);
|
|
|
|
return GeneratedWrapper;
|
|
};
|
|
|
|
forwardMethodsToWrapper([
|
|
window.HTMLDocument || window.Document, // Gecko adds these to HTMLDocument
|
|
], [
|
|
'register',
|
|
]);
|
|
}
|
|
|
|
// We also override some of the methods on document.body and document.head
|
|
// for convenience.
|
|
forwardMethodsToWrapper([
|
|
window.HTMLBodyElement,
|
|
window.HTMLDocument || window.Document, // Gecko adds these to HTMLDocument
|
|
window.HTMLHeadElement,
|
|
window.HTMLHtmlElement,
|
|
], [
|
|
'appendChild',
|
|
'compareDocumentPosition',
|
|
'contains',
|
|
'getElementsByClassName',
|
|
'getElementsByTagName',
|
|
'getElementsByTagNameNS',
|
|
'insertBefore',
|
|
'querySelector',
|
|
'querySelectorAll',
|
|
'removeChild',
|
|
'replaceChild',
|
|
matchesName,
|
|
]);
|
|
|
|
forwardMethodsToWrapper([
|
|
window.HTMLDocument || window.Document, // Gecko adds these to HTMLDocument
|
|
], [
|
|
'adoptNode',
|
|
'importNode',
|
|
'contains',
|
|
'createComment',
|
|
'createDocumentFragment',
|
|
'createElement',
|
|
'createElementNS',
|
|
'createEvent',
|
|
'createEventNS',
|
|
'createRange',
|
|
'createTextNode',
|
|
'elementFromPoint',
|
|
'getElementById',
|
|
]);
|
|
|
|
mixin(Document.prototype, GetElementsByInterface);
|
|
mixin(Document.prototype, ParentNodeInterface);
|
|
mixin(Document.prototype, SelectorsInterface);
|
|
|
|
mixin(Document.prototype, {
|
|
get implementation() {
|
|
var implementation = implementationTable.get(this);
|
|
if (implementation)
|
|
return implementation;
|
|
implementation =
|
|
new DOMImplementation(unwrap(this).implementation);
|
|
implementationTable.set(this, implementation);
|
|
return implementation;
|
|
}
|
|
});
|
|
|
|
registerWrapper(window.Document, Document,
|
|
document.implementation.createHTMLDocument(''));
|
|
|
|
// Both WebKit and Gecko uses HTMLDocument for document. HTML5/DOM only has
|
|
// one Document interface and IE implements the standard correctly.
|
|
if (window.HTMLDocument)
|
|
registerWrapper(window.HTMLDocument, Document);
|
|
|
|
wrapEventTargetMethods([
|
|
window.HTMLBodyElement,
|
|
window.HTMLDocument || window.Document, // Gecko adds these to HTMLDocument
|
|
window.HTMLHeadElement,
|
|
]);
|
|
|
|
function DOMImplementation(impl) {
|
|
this.impl = impl;
|
|
}
|
|
|
|
function wrapImplMethod(constructor, name) {
|
|
var original = document.implementation[name];
|
|
constructor.prototype[name] = function() {
|
|
return wrap(original.apply(this.impl, arguments));
|
|
};
|
|
}
|
|
|
|
function forwardImplMethod(constructor, name) {
|
|
var original = document.implementation[name];
|
|
constructor.prototype[name] = function() {
|
|
return original.apply(this.impl, arguments);
|
|
};
|
|
}
|
|
|
|
wrapImplMethod(DOMImplementation, 'createDocumentType');
|
|
wrapImplMethod(DOMImplementation, 'createDocument');
|
|
wrapImplMethod(DOMImplementation, 'createHTMLDocument');
|
|
forwardImplMethod(DOMImplementation, 'hasFeature');
|
|
|
|
registerWrapper(window.DOMImplementation, DOMImplementation);
|
|
|
|
forwardMethodsToWrapper([
|
|
window.DOMImplementation,
|
|
], [
|
|
'createDocumentType',
|
|
'createDocument',
|
|
'createHTMLDocument',
|
|
'hasFeature',
|
|
]);
|
|
|
|
scope.adoptNodeNoRemove = adoptNodeNoRemove;
|
|
scope.wrappers.DOMImplementation = DOMImplementation;
|
|
scope.wrappers.Document = Document;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var EventTarget = scope.wrappers.EventTarget;
|
|
var mixin = scope.mixin;
|
|
var registerWrapper = scope.registerWrapper;
|
|
var unwrap = scope.unwrap;
|
|
var unwrapIfNeeded = scope.unwrapIfNeeded;
|
|
var wrap = scope.wrap;
|
|
var renderAllPending = scope.renderAllPending;
|
|
|
|
var OriginalWindow = window.Window;
|
|
|
|
function Window(impl) {
|
|
EventTarget.call(this, impl);
|
|
}
|
|
Window.prototype = Object.create(EventTarget.prototype);
|
|
|
|
var originalGetComputedStyle = window.getComputedStyle;
|
|
OriginalWindow.prototype.getComputedStyle = function(el, pseudo) {
|
|
renderAllPending();
|
|
return originalGetComputedStyle.call(this || window, unwrapIfNeeded(el),
|
|
pseudo);
|
|
};
|
|
|
|
['addEventListener', 'removeEventListener', 'dispatchEvent'].forEach(
|
|
function(name) {
|
|
OriginalWindow.prototype[name] = function() {
|
|
var w = wrap(this || window);
|
|
return w[name].apply(w, arguments);
|
|
};
|
|
});
|
|
|
|
mixin(Window.prototype, {
|
|
getComputedStyle: function(el, pseudo) {
|
|
return originalGetComputedStyle.call(unwrap(this), unwrapIfNeeded(el),
|
|
pseudo);
|
|
}
|
|
});
|
|
|
|
registerWrapper(OriginalWindow, Window);
|
|
|
|
scope.wrappers.Window = Window;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
// Copyright 2013 The Polymer Authors. All rights reserved.
|
|
// Use of this source code is goverened by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
(function(scope) {
|
|
'use strict';
|
|
|
|
var isWrapperFor = scope.isWrapperFor;
|
|
|
|
// This is a list of the elements we currently override the global constructor
|
|
// for.
|
|
var elements = {
|
|
'a': 'HTMLAnchorElement',
|
|
'applet': 'HTMLAppletElement',
|
|
'area': 'HTMLAreaElement',
|
|
'br': 'HTMLBRElement',
|
|
'base': 'HTMLBaseElement',
|
|
'body': 'HTMLBodyElement',
|
|
'button': 'HTMLButtonElement',
|
|
// 'command': 'HTMLCommandElement', // Not fully implemented in Gecko.
|
|
'dl': 'HTMLDListElement',
|
|
'datalist': 'HTMLDataListElement',
|
|
'data': 'HTMLDataElement',
|
|
'dir': 'HTMLDirectoryElement',
|
|
'div': 'HTMLDivElement',
|
|
'embed': 'HTMLEmbedElement',
|
|
'fieldset': 'HTMLFieldSetElement',
|
|
'font': 'HTMLFontElement',
|
|
'form': 'HTMLFormElement',
|
|
'frame': 'HTMLFrameElement',
|
|
'frameset': 'HTMLFrameSetElement',
|
|
'hr': 'HTMLHRElement',
|
|
'head': 'HTMLHeadElement',
|
|
'h1': 'HTMLHeadingElement',
|
|
'html': 'HTMLHtmlElement',
|
|
'iframe': 'HTMLIFrameElement',
|
|
'input': 'HTMLInputElement',
|
|
'li': 'HTMLLIElement',
|
|
'label': 'HTMLLabelElement',
|
|
'legend': 'HTMLLegendElement',
|
|
'link': 'HTMLLinkElement',
|
|
'map': 'HTMLMapElement',
|
|
'marquee': 'HTMLMarqueeElement',
|
|
'menu': 'HTMLMenuElement',
|
|
'menuitem': 'HTMLMenuItemElement',
|
|
'meta': 'HTMLMetaElement',
|
|
'meter': 'HTMLMeterElement',
|
|
'del': 'HTMLModElement',
|
|
'ol': 'HTMLOListElement',
|
|
'object': 'HTMLObjectElement',
|
|
'optgroup': 'HTMLOptGroupElement',
|
|
'option': 'HTMLOptionElement',
|
|
'output': 'HTMLOutputElement',
|
|
'p': 'HTMLParagraphElement',
|
|
'param': 'HTMLParamElement',
|
|
'pre': 'HTMLPreElement',
|
|
'progress': 'HTMLProgressElement',
|
|
'q': 'HTMLQuoteElement',
|
|
'script': 'HTMLScriptElement',
|
|
'select': 'HTMLSelectElement',
|
|
'source': 'HTMLSourceElement',
|
|
'span': 'HTMLSpanElement',
|
|
'style': 'HTMLStyleElement',
|
|
'time': 'HTMLTimeElement',
|
|
'caption': 'HTMLTableCaptionElement',
|
|
// WebKit and Moz are wrong:
|
|
// https://bugs.webkit.org/show_bug.cgi?id=111469
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=848096
|
|
// 'td': 'HTMLTableCellElement',
|
|
'col': 'HTMLTableColElement',
|
|
'table': 'HTMLTableElement',
|
|
'tr': 'HTMLTableRowElement',
|
|
'thead': 'HTMLTableSectionElement',
|
|
'tbody': 'HTMLTableSectionElement',
|
|
'textarea': 'HTMLTextAreaElement',
|
|
'track': 'HTMLTrackElement',
|
|
'title': 'HTMLTitleElement',
|
|
'ul': 'HTMLUListElement',
|
|
'video': 'HTMLVideoElement',
|
|
};
|
|
|
|
function overrideConstructor(tagName) {
|
|
var nativeConstructorName = elements[tagName];
|
|
var nativeConstructor = window[nativeConstructorName];
|
|
if (!nativeConstructor)
|
|
return;
|
|
var element = document.createElement(tagName);
|
|
var wrapperConstructor = element.constructor;
|
|
window[nativeConstructorName] = wrapperConstructor;
|
|
}
|
|
|
|
Object.keys(elements).forEach(overrideConstructor);
|
|
|
|
Object.getOwnPropertyNames(scope.wrappers).forEach(function(name) {
|
|
window[name] = scope.wrappers[name]
|
|
});
|
|
|
|
// Export for testing.
|
|
scope.knownElements = elements;
|
|
|
|
})(window.ShadowDOMPolyfill);
|
|
|
|
/*
|
|
* Copyright 2013 The Polymer Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style
|
|
* license that can be found in the LICENSE file.
|
|
*/
|
|
(function() {
|
|
var ShadowDOMPolyfill = window.ShadowDOMPolyfill;
|
|
var wrap = ShadowDOMPolyfill.wrap;
|
|
|
|
// patch in prefixed name
|
|
Object.defineProperties(HTMLElement.prototype, {
|
|
//TODO(sjmiles): review accessor alias with Arv
|
|
webkitShadowRoot: {
|
|
get: function() {
|
|
return this.shadowRoot;
|
|
}
|
|
}
|
|
});
|
|
|
|
//TODO(sjmiles): review method alias with Arv
|
|
HTMLElement.prototype.webkitCreateShadowRoot =
|
|
HTMLElement.prototype.createShadowRoot;
|
|
|
|
// TODO(jmesserly): we need to wrap document somehow (a dart:html hook?)
|
|
window.dartExperimentalFixupGetTag = function(originalGetTag) {
|
|
var NodeList = ShadowDOMPolyfill.wrappers.NodeList;
|
|
var ShadowRoot = ShadowDOMPolyfill.wrappers.ShadowRoot;
|
|
var unwrapIfNeeded = ShadowDOMPolyfill.unwrapIfNeeded;
|
|
function getTag(obj) {
|
|
// TODO(jmesserly): do we still need these?
|
|
if (obj instanceof NodeList) return 'NodeList';
|
|
if (obj instanceof ShadowRoot) return 'ShadowRoot';
|
|
if (window.MutationRecord && (obj instanceof MutationRecord))
|
|
return 'MutationRecord';
|
|
if (window.MutationObserver && (obj instanceof MutationObserver))
|
|
return 'MutationObserver';
|
|
|
|
// TODO(jmesserly): this prevents incorrect interaction between ShadowDOM
|
|
// and dart:html's <template> polyfill. Essentially, ShadowDOM is
|
|
// polyfilling native template, but our Dart polyfill fails to detect this
|
|
// because the unwrapped node is an HTMLUnknownElement, leading it to
|
|
// think the node has no content.
|
|
if (obj instanceof HTMLTemplateElement) return 'HTMLTemplateElement';
|
|
|
|
var unwrapped = unwrapIfNeeded(obj);
|
|
if (obj !== unwrapped) {
|
|
// Fix up class names for Firefox.
|
|
// For some of them (like HTMLFormElement and HTMLInputElement),
|
|
// the "constructor" property of the unwrapped nodes points at the
|
|
// same constructor as the wrapper.
|
|
var ctor = obj.constructor
|
|
if (ctor === unwrapped.constructor) {
|
|
var name = ctor._ShadowDOMPolyfill$cacheTag_;
|
|
if (!name) {
|
|
name = Object.prototype.toString.call(unwrapped);
|
|
name = name.substring(8, name.length - 1);
|
|
ctor._ShadowDOMPolyfill$cacheTag_ = name;
|
|
}
|
|
return name;
|
|
}
|
|
|
|
obj = unwrapped;
|
|
}
|
|
return originalGetTag(obj);
|
|
}
|
|
|
|
return getTag;
|
|
};
|
|
})();
|
|
|
|
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
var Platform = {};
|
|
|
|
/*
|
|
* Copyright 2012 The Polymer Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style
|
|
* license that can be found in the LICENSE file.
|
|
*/
|
|
|
|
/*
|
|
This is a limited shim for ShadowDOM css styling.
|
|
https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#styles
|
|
|
|
The intention here is to support only the styling features which can be
|
|
relatively simply implemented. The goal is to allow users to avoid the
|
|
most obvious pitfalls and do so without compromising performance significantly.
|
|
For ShadowDOM styling that's not covered here, a set of best practices
|
|
can be provided that should allow users to accomplish more complex styling.
|
|
|
|
The following is a list of specific ShadowDOM styling features and a brief
|
|
discussion of the approach used to shim.
|
|
|
|
Shimmed features:
|
|
|
|
* @host: ShadowDOM allows styling of the shadowRoot's host element using the
|
|
@host rule. To shim this feature, the @host styles are reformatted and
|
|
prefixed with a given scope name and promoted to a document level stylesheet.
|
|
For example, given a scope name of .foo, a rule like this:
|
|
|
|
@host {
|
|
* {
|
|
background: red;
|
|
}
|
|
}
|
|
|
|
becomes:
|
|
|
|
.foo {
|
|
background: red;
|
|
}
|
|
|
|
* encapsultion: Styles defined within ShadowDOM, apply only to
|
|
dom inside the ShadowDOM. Polymer uses one of two techniques to imlement
|
|
this feature.
|
|
|
|
By default, rules are prefixed with the host element tag name
|
|
as a descendant selector. This ensures styling does not leak out of the 'top'
|
|
of the element's ShadowDOM. For example,
|
|
|
|
div {
|
|
font-weight: bold;
|
|
}
|
|
|
|
becomes:
|
|
|
|
x-foo div {
|
|
font-weight: bold;
|
|
}
|
|
|
|
becomes:
|
|
|
|
|
|
Alternatively, if Platform.ShadowCSS.strictStyling is set to true then
|
|
selectors are scoped by adding an attribute selector suffix to each
|
|
simple selector that contains the host element tag name. Each element
|
|
in the element's ShadowDOM template is also given the scope attribute.
|
|
Thus, these rules match only elements that have the scope attribute.
|
|
For example, given a scope name of x-foo, a rule like this:
|
|
|
|
div {
|
|
font-weight: bold;
|
|
}
|
|
|
|
becomes:
|
|
|
|
div[x-foo] {
|
|
font-weight: bold;
|
|
}
|
|
|
|
Note that elements that are dynamically added to a scope must have the scope
|
|
selector added to them manually.
|
|
|
|
* ::pseudo: These rules are converted to rules that take advantage of the
|
|
pseudo attribute. For example, a shadowRoot like this inside an x-foo
|
|
|
|
<div pseudo="x-special">Special</div>
|
|
|
|
with a rule like this:
|
|
|
|
x-foo::x-special { ... }
|
|
|
|
becomes:
|
|
|
|
x-foo [pseudo=x-special] { ... }
|
|
|
|
* ::part(): These rules are converted to rules that take advantage of the
|
|
part attribute. For example, a shadowRoot like this inside an x-foo
|
|
|
|
<div part="special">Special</div>
|
|
|
|
with a rule like this:
|
|
|
|
x-foo::part(special) { ... }
|
|
|
|
becomes:
|
|
|
|
x-foo [part=special] { ... }
|
|
|
|
Unaddressed ShadowDOM styling features:
|
|
|
|
* upper/lower bound encapsulation: Styles which are defined outside a
|
|
shadowRoot should not cross the ShadowDOM boundary and should not apply
|
|
inside a shadowRoot.
|
|
|
|
This styling behavior is not emulated. Some possible ways to do this that
|
|
were rejected due to complexity and/or performance concerns include: (1) reset
|
|
every possible property for every possible selector for a given scope name;
|
|
(2) re-implement css in javascript.
|
|
|
|
As an alternative, users should make sure to use selectors
|
|
specific to the scope in which they are working.
|
|
|
|
* ::distributed: This behavior is not emulated. It's often not necessary
|
|
to style the contents of a specific insertion point and instead, descendants
|
|
of the host element can be styled selectively. Users can also create an
|
|
extra node around an insertion point and style that node's contents
|
|
via descendent selectors. For example, with a shadowRoot like this:
|
|
|
|
<style>
|
|
content::-webkit-distributed(div) {
|
|
background: red;
|
|
}
|
|
</style>
|
|
<content></content>
|
|
|
|
could become:
|
|
|
|
<style>
|
|
/ *@polyfill .content-container div * /
|
|
content::-webkit-distributed(div) {
|
|
background: red;
|
|
}
|
|
</style>
|
|
<div class="content-container">
|
|
<content></content>
|
|
</div>
|
|
|
|
Note the use of @polyfill in the comment above a ShadowDOM specific style
|
|
declaration. This is a directive to the styling shim to use the selector
|
|
in comments in lieu of the next selector when running under polyfill.
|
|
*/
|
|
(function(scope) {
|
|
|
|
var ShadowCSS = {
|
|
strictStyling: false,
|
|
registry: {},
|
|
// Shim styles for a given root associated with a name and extendsName
|
|
// 1. cache root styles by name
|
|
// 2. optionally tag root nodes with scope name
|
|
// 3. shim polyfill directives /* @polyfill */ and /* @polyfill-rule */
|
|
// 4. shim @host and scoping
|
|
shimStyling: function(root, name, extendsName) {
|
|
var typeExtension = this.isTypeExtension(extendsName);
|
|
// use caching to make working with styles nodes easier and to facilitate
|
|
// lookup of extendee
|
|
var def = this.registerDefinition(root, name, extendsName);
|
|
// find styles and apply shimming...
|
|
if (this.strictStyling) {
|
|
this.applyScopeToContent(root, name);
|
|
}
|
|
// insert @polyfill and @polyfill-rule rules into style elements
|
|
// scoping process takes care of shimming these
|
|
this.insertPolyfillDirectives(def.rootStyles);
|
|
this.insertPolyfillRules(def.rootStyles);
|
|
var cssText = this.stylesToShimmedCssText(def.scopeStyles, name,
|
|
typeExtension);
|
|
// note: we only need to do rootStyles since these are unscoped.
|
|
cssText += this.extractPolyfillUnscopedRules(def.rootStyles);
|
|
// provide shimmedStyle for user extensibility
|
|
def.shimmedStyle = cssTextToStyle(cssText);
|
|
if (root) {
|
|
root.shimmedStyle = def.shimmedStyle;
|
|
}
|
|
// remove existing style elements
|
|
for (var i=0, l=def.rootStyles.length, s; (i<l) && (s=def.rootStyles[i]);
|
|
i++) {
|
|
s.parentNode.removeChild(s);
|
|
}
|
|
// add style to document
|
|
addCssToDocument(cssText);
|
|
},
|
|
registerDefinition: function(root, name, extendsName) {
|
|
var def = this.registry[name] = {
|
|
root: root,
|
|
name: name,
|
|
extendsName: extendsName
|
|
}
|
|
var styles = root ? root.querySelectorAll('style') : [];
|
|
styles = styles ? Array.prototype.slice.call(styles, 0) : [];
|
|
def.rootStyles = styles;
|
|
def.scopeStyles = def.rootStyles;
|
|
var extendee = this.registry[def.extendsName];
|
|
if (extendee && (!root || root.querySelector('shadow'))) {
|
|
def.scopeStyles = extendee.scopeStyles.concat(def.scopeStyles);
|
|
}
|
|
return def;
|
|
},
|
|
isTypeExtension: function(extendsName) {
|
|
return extendsName && extendsName.indexOf('-') < 0;
|
|
},
|
|
applyScopeToContent: function(root, name) {
|
|
if (root) {
|
|
// add the name attribute to each node in root.
|
|
Array.prototype.forEach.call(root.querySelectorAll('*'),
|
|
function(node) {
|
|
node.setAttribute(name, '');
|
|
});
|
|
// and template contents too
|
|
Array.prototype.forEach.call(root.querySelectorAll('template'),
|
|
function(template) {
|
|
this.applyScopeToContent(template.content, name);
|
|
},
|
|
this);
|
|
}
|
|
},
|
|
/*
|
|
* Process styles to convert native ShadowDOM rules that will trip
|
|
* up the css parser; we rely on decorating the stylesheet with comments.
|
|
*
|
|
* For example, we convert this rule:
|
|
*
|
|
* (comment start) @polyfill :host menu-item (comment end)
|
|
* shadow::-webkit-distributed(menu-item) {
|
|
*
|
|
* to this:
|
|
*
|
|
* scopeName menu-item {
|
|
*
|
|
**/
|
|
insertPolyfillDirectives: function(styles) {
|
|
if (styles) {
|
|
Array.prototype.forEach.call(styles, function(s) {
|
|
s.textContent = this.insertPolyfillDirectivesInCssText(s.textContent);
|
|
}, this);
|
|
}
|
|
},
|
|
insertPolyfillDirectivesInCssText: function(cssText) {
|
|
return cssText.replace(cssPolyfillCommentRe, function(match, p1) {
|
|
// remove end comment delimiter and add block start
|
|
return p1.slice(0, -2) + '{';
|
|
});
|
|
},
|
|
/*
|
|
* Process styles to add rules which will only apply under the polyfill
|
|
*
|
|
* For example, we convert this rule:
|
|
*
|
|
* (comment start) @polyfill-rule :host menu-item {
|
|
* ... } (comment end)
|
|
*
|
|
* to this:
|
|
*
|
|
* scopeName menu-item {...}
|
|
*
|
|
**/
|
|
insertPolyfillRules: function(styles) {
|
|
if (styles) {
|
|
Array.prototype.forEach.call(styles, function(s) {
|
|
s.textContent = this.insertPolyfillRulesInCssText(s.textContent);
|
|
}, this);
|
|
}
|
|
},
|
|
insertPolyfillRulesInCssText: function(cssText) {
|
|
return cssText.replace(cssPolyfillRuleCommentRe, function(match, p1) {
|
|
// remove end comment delimiter
|
|
return p1.slice(0, -1);
|
|
});
|
|
},
|
|
/*
|
|
* Process styles to add rules which will only apply under the polyfill
|
|
* and do not process via CSSOM. (CSSOM is destructive to rules on rare
|
|
* occasions, e.g. -webkit-calc on Safari.)
|
|
* For example, we convert this rule:
|
|
*
|
|
* (comment start) @polyfill-unscoped-rule menu-item {
|
|
* ... } (comment end)
|
|
*
|
|
* to this:
|
|
*
|
|
* menu-item {...}
|
|
*
|
|
**/
|
|
extractPolyfillUnscopedRules: function(styles) {
|
|
var cssText = '';
|
|
if (styles) {
|
|
Array.prototype.forEach.call(styles, function(s) {
|
|
cssText += this.extractPolyfillUnscopedRulesFromCssText(
|
|
s.textContent) + '\n\n';
|
|
}, this);
|
|
}
|
|
return cssText;
|
|
},
|
|
extractPolyfillUnscopedRulesFromCssText: function(cssText) {
|
|
var r = '', matches;
|
|
while (matches = cssPolyfillUnscopedRuleCommentRe.exec(cssText)) {
|
|
r += matches[1].slice(0, -1) + '\n\n';
|
|
}
|
|
return r;
|
|
},
|
|
// apply @host and scope shimming
|
|
stylesToShimmedCssText: function(styles, name, typeExtension) {
|
|
return this.shimAtHost(styles, name, typeExtension) +
|
|
this.shimScoping(styles, name, typeExtension);
|
|
},
|
|
// form: @host { .foo { declarations } }
|
|
// becomes: scopeName.foo { declarations }
|
|
shimAtHost: function(styles, name, typeExtension) {
|
|
if (styles) {
|
|
return this.convertAtHostStyles(styles, name, typeExtension);
|
|
}
|
|
},
|
|
convertAtHostStyles: function(styles, name, typeExtension) {
|
|
var cssText = stylesToCssText(styles), self = this;
|
|
cssText = cssText.replace(hostRuleRe, function(m, p1) {
|
|
return self.scopeHostCss(p1, name, typeExtension);
|
|
});
|
|
cssText = rulesToCss(this.findAtHostRules(cssToRules(cssText),
|
|
this.makeScopeMatcher(name, typeExtension)));
|
|
return cssText;
|
|
},
|
|
scopeHostCss: function(cssText, name, typeExtension) {
|
|
var self = this;
|
|
return cssText.replace(selectorRe, function(m, p1, p2) {
|
|
return self.scopeHostSelector(p1, name, typeExtension) + ' ' + p2 + '\n\t';
|
|
});
|
|
},
|
|
// supports scopig by name and [is=name] syntax
|
|
scopeHostSelector: function(selector, name, typeExtension) {
|
|
var r = [], parts = selector.split(','), is = '[is=' + name + ']';
|
|
parts.forEach(function(p) {
|
|
p = p.trim();
|
|
// selector: *|:scope -> name
|
|
if (p.match(hostElementRe)) {
|
|
p = p.replace(hostElementRe, typeExtension ? is + '$1$3' :
|
|
name + '$1$3');
|
|
// selector: .foo -> name.foo (OR) [bar] -> name[bar]
|
|
} else if (p.match(hostFixableRe)) {
|
|
p = typeExtension ? is + p : name + p;
|
|
}
|
|
r.push(p);
|
|
}, this);
|
|
return r.join(', ');
|
|
},
|
|
// consider styles that do not include component name in the selector to be
|
|
// unscoped and in need of promotion;
|
|
// for convenience, also consider keyframe rules this way.
|
|
findAtHostRules: function(cssRules, matcher) {
|
|
return Array.prototype.filter.call(cssRules,
|
|
this.isHostRule.bind(this, matcher));
|
|
},
|
|
isHostRule: function(matcher, cssRule) {
|
|
return (cssRule.selectorText && cssRule.selectorText.match(matcher)) ||
|
|
(cssRule.cssRules && this.findAtHostRules(cssRule.cssRules, matcher).length) ||
|
|
(cssRule.type == CSSRule.WEBKIT_KEYFRAMES_RULE);
|
|
},
|
|
/* Ensure styles are scoped. Pseudo-scoping takes a rule like:
|
|
*
|
|
* .foo {... }
|
|
*
|
|
* and converts this to
|
|
*
|
|
* scopeName .foo { ... }
|
|
*/
|
|
shimScoping: function(styles, name, typeExtension) {
|
|
if (styles) {
|
|
return this.convertScopedStyles(styles, name, typeExtension);
|
|
}
|
|
},
|
|
convertScopedStyles: function(styles, name, typeExtension) {
|
|
var cssText = stylesToCssText(styles).replace(hostRuleRe, '');
|
|
cssText = this.insertPolyfillHostInCssText(cssText);
|
|
cssText = this.convertColonHost(cssText);
|
|
cssText = this.convertPseudos(cssText);
|
|
cssText = this.convertParts(cssText);
|
|
cssText = this.convertCombinators(cssText);
|
|
var rules = cssToRules(cssText);
|
|
cssText = this.scopeRules(rules, name, typeExtension);
|
|
return cssText;
|
|
},
|
|
convertPseudos: function(cssText) {
|
|
return cssText.replace(cssPseudoRe, ' [pseudo=$1]');
|
|
},
|
|
convertParts: function(cssText) {
|
|
return cssText.replace(cssPartRe, ' [part=$1]');
|
|
},
|
|
/*
|
|
* convert a rule like :host(.foo) > .bar { }
|
|
*
|
|
* to
|
|
*
|
|
* scopeName.foo > .bar, .foo scopeName > .bar { }
|
|
*
|
|
* and
|
|
*
|
|
* :host(.foo:host) .bar { ... }
|
|
*
|
|
* to
|
|
*
|
|
* scopeName.foo .bar { ... }
|
|
*/
|
|
convertColonHost: function(cssText) {
|
|
// p1 = :host, p2 = contents of (), p3 rest of rule
|
|
return cssText.replace(cssColonHostRe, function(m, p1, p2, p3) {
|
|
p1 = polyfillHostNoCombinator;
|
|
if (p2) {
|
|
var parts = p2.split(','), r = [];
|
|
for (var i=0, l=parts.length, p; (i<l) && (p=parts[i]); i++) {
|
|
p = p.trim();
|
|
if (p.match(polyfillHost)) {
|
|
r.push(p1 + p.replace(polyfillHost, '') + p3);
|
|
} else {
|
|
r.push(p1 + p + p3 + ', ' + p + ' ' + p1 + p3);
|
|
}
|
|
}
|
|
return r.join(',');
|
|
} else {
|
|
return p1 + p3;
|
|
}
|
|
});
|
|
},
|
|
/*
|
|
* Convert ^ and ^^ combinators by replacing with space.
|
|
*/
|
|
convertCombinators: function(cssText) {
|
|
return cssText.replace(/\^\^/g, ' ').replace(/\^/g, ' ');
|
|
},
|
|
// change a selector like 'div' to 'name div'
|
|
scopeRules: function(cssRules, name, typeExtension) {
|
|
var cssText = '';
|
|
Array.prototype.forEach.call(cssRules, function(rule) {
|
|
if (rule.selectorText && (rule.style && rule.style.cssText)) {
|
|
cssText += this.scopeSelector(rule.selectorText, name, typeExtension,
|
|
this.strictStyling) + ' {\n\t';
|
|
cssText += this.propertiesFromRule(rule) + '\n}\n\n';
|
|
} else if (rule.media) {
|
|
cssText += '@media ' + rule.media.mediaText + ' {\n';
|
|
cssText += this.scopeRules(rule.cssRules, name, typeExtension);
|
|
cssText += '\n}\n\n';
|
|
} else if (rule.cssText) {
|
|
cssText += rule.cssText + '\n\n';
|
|
}
|
|
}, this);
|
|
return cssText;
|
|
},
|
|
scopeSelector: function(selector, name, typeExtension, strict) {
|
|
var r = [], parts = selector.split(',');
|
|
parts.forEach(function(p) {
|
|
p = p.trim();
|
|
if (this.selectorNeedsScoping(p, name, typeExtension)) {
|
|
p = (strict && !p.match(polyfillHostNoCombinator)) ?
|
|
this.applyStrictSelectorScope(p, name) :
|
|
this.applySimpleSelectorScope(p, name, typeExtension);
|
|
}
|
|
r.push(p);
|
|
}, this);
|
|
return r.join(', ');
|
|
},
|
|
selectorNeedsScoping: function(selector, name, typeExtension) {
|
|
var re = this.makeScopeMatcher(name, typeExtension);
|
|
return !selector.match(re);
|
|
},
|
|
makeScopeMatcher: function(name, typeExtension) {
|
|
var matchScope = typeExtension ? '\\[is=[\'"]?' + name + '[\'"]?\\]' : name;
|
|
return new RegExp('^(' + matchScope + ')' + selectorReSuffix, 'm');
|
|
},
|
|
// scope via name and [is=name]
|
|
applySimpleSelectorScope: function(selector, name, typeExtension) {
|
|
var scoper = typeExtension ? '[is=' + name + ']' : name;
|
|
if (selector.match(polyfillHostRe)) {
|
|
selector = selector.replace(polyfillHostNoCombinator, scoper);
|
|
return selector.replace(polyfillHostRe, scoper + ' ');
|
|
} else {
|
|
return scoper + ' ' + selector;
|
|
}
|
|
},
|
|
// return a selector with [name] suffix on each simple selector
|
|
// e.g. .foo.bar > .zot becomes .foo[name].bar[name] > .zot[name]
|
|
applyStrictSelectorScope: function(selector, name) {
|
|
var splits = [' ', '>', '+', '~'],
|
|
scoped = selector,
|
|
attrName = '[' + name + ']';
|
|
splits.forEach(function(sep) {
|
|
var parts = scoped.split(sep);
|
|
scoped = parts.map(function(p) {
|
|
// remove :host since it should be unnecessary
|
|
var t = p.trim().replace(polyfillHostRe, '');
|
|
if (t && (splits.indexOf(t) < 0) && (t.indexOf(attrName) < 0)) {
|
|
p = t.replace(/([^:]*)(:*)(.*)/, '$1' + attrName + '$2$3')
|
|
}
|
|
return p;
|
|
}).join(sep);
|
|
});
|
|
return scoped;
|
|
},
|
|
insertPolyfillHostInCssText: function(selector) {
|
|
return selector.replace(hostRe, polyfillHost).replace(colonHostRe,
|
|
polyfillHost);
|
|
},
|
|
propertiesFromRule: function(rule) {
|
|
return rule.style.cssText;
|
|
}
|
|
};
|
|
|
|
var hostRuleRe = /@host[^{]*{(([^}]*?{[^{]*?}[\s\S]*?)+)}/gim,
|
|
selectorRe = /([^{]*)({[\s\S]*?})/gim,
|
|
hostElementRe = /(.*)((?:\*)|(?:\:scope))(.*)/,
|
|
hostFixableRe = /^[.\[:]/,
|
|
cssCommentRe = /\/\*[^*]*\*+([^/*][^*]*\*+)*\//gim,
|
|
cssPolyfillCommentRe = /\/\*\s*@polyfill ([^*]*\*+([^/*][^*]*\*+)*\/)([^{]*?){/gim,
|
|
cssPolyfillRuleCommentRe = /\/\*\s@polyfill-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim,
|
|
cssPolyfillUnscopedRuleCommentRe = /\/\*\s@polyfill-unscoped-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim,
|
|
cssPseudoRe = /::(x-[^\s{,(]*)/gim,
|
|
cssPartRe = /::part\(([^)]*)\)/gim,
|
|
// note: :host pre-processed to -shadowcsshost.
|
|
polyfillHost = '-shadowcsshost',
|
|
cssColonHostRe = new RegExp('(' + polyfillHost +
|
|
')(?:\\((' +
|
|
'(?:\\([^)(]*\\)|[^)(]*)+?' +
|
|
')\\))?([^,{]*)', 'gim'),
|
|
selectorReSuffix = '([>\\s~+\[.,{:][\\s\\S]*)?$',
|
|
hostRe = /@host/gim,
|
|
colonHostRe = /\:host/gim,
|
|
/* host name without combinator */
|
|
polyfillHostNoCombinator = polyfillHost + '-no-combinator',
|
|
polyfillHostRe = new RegExp(polyfillHost, 'gim');
|
|
|
|
function stylesToCssText(styles, preserveComments) {
|
|
var cssText = '';
|
|
Array.prototype.forEach.call(styles, function(s) {
|
|
cssText += s.textContent + '\n\n';
|
|
});
|
|
// strip comments for easier processing
|
|
if (!preserveComments) {
|
|
cssText = cssText.replace(cssCommentRe, '');
|
|
}
|
|
return cssText;
|
|
}
|
|
|
|
function cssTextToStyle(cssText) {
|
|
var style = document.createElement('style');
|
|
style.textContent = cssText;
|
|
return style;
|
|
}
|
|
|
|
function cssToRules(cssText) {
|
|
var style = cssTextToStyle(cssText);
|
|
document.head.appendChild(style);
|
|
var rules = style.sheet.cssRules;
|
|
style.parentNode.removeChild(style);
|
|
return rules;
|
|
}
|
|
|
|
function rulesToCss(cssRules) {
|
|
for (var i=0, css=[]; i < cssRules.length; i++) {
|
|
css.push(cssRules[i].cssText);
|
|
}
|
|
return css.join('\n\n');
|
|
}
|
|
|
|
function addCssToDocument(cssText) {
|
|
if (cssText) {
|
|
getSheet().appendChild(document.createTextNode(cssText));
|
|
}
|
|
}
|
|
|
|
var sheet;
|
|
function getSheet() {
|
|
if (!sheet) {
|
|
sheet = document.createElement("style");
|
|
sheet.setAttribute('ShadowCSSShim', '');
|
|
}
|
|
return sheet;
|
|
}
|
|
|
|
// add polyfill stylesheet to document
|
|
if (window.ShadowDOMPolyfill) {
|
|
addCssToDocument('style { display: none !important; }\n');
|
|
var head = document.querySelector('head');
|
|
head.insertBefore(getSheet(), head.childNodes[0]);
|
|
}
|
|
|
|
// exports
|
|
scope.ShadowCSS = ShadowCSS;
|
|
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})(window.Platform);
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} |