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| 1 /* | |
| 2 * Copyright (c) 2014 The Polymer Project Authors. All rights reserved. | |
| 3 * This code may only be used under the BSD style license found at http://polyme
r.github.io/LICENSE.txt | |
| 4 * The complete set of authors may be found at http://polymer.github.io/AUTHORS.
txt | |
| 5 * The complete set of contributors may be found at http://polymer.github.io/CON
TRIBUTORS.txt | |
| 6 * Code distributed by Google as part of the polymer project is also | |
| 7 * subject to an additional IP rights grant found at http://polymer.github.io/PA
TENTS.txt | |
| 8 */ | |
| 9 | |
| 10 (function(scope) { | |
| 11 | |
| 12 /** | |
| 13 * @class Polymer | |
| 14 */ | |
| 15 | |
| 16 // imports | |
| 17 var endOfMicrotask = scope.endOfMicrotask; | |
| 18 | |
| 19 // logging | |
| 20 var log = window.WebComponents ? WebComponents.flags.log : {}; | |
| 21 | |
| 22 // inject style sheet | |
| 23 var style = document.createElement('style'); | |
| 24 style.textContent = 'template {display: none !important;} /* injected by platfor
m.js */'; | |
| 25 var head = document.querySelector('head'); | |
| 26 head.insertBefore(style, head.firstChild); | |
| 27 | |
| 28 | |
| 29 /** | |
| 30 * Force any pending data changes to be observed before | |
| 31 * the next task. Data changes are processed asynchronously but are guaranteed | |
| 32 * to be processed, for example, before paintin. This method should rarely be | |
| 33 * needed. It does nothing when Object.observe is available; | |
| 34 * when Object.observe is not available, Polymer automatically flushes data | |
| 35 * changes approximately every 1/10 second. | |
| 36 * Therefore, `flush` should only be used when a data mutation should be | |
| 37 * observed sooner than this. | |
| 38 * | |
| 39 * @method flush | |
| 40 */ | |
| 41 // flush (with logging) | |
| 42 var flushing; | |
| 43 function flush() { | |
| 44 if (!flushing) { | |
| 45 flushing = true; | |
| 46 endOfMicrotask(function() { | |
| 47 flushing = false; | |
| 48 log.data && console.group('flush'); | |
| 49 Platform.performMicrotaskCheckpoint(); | |
| 50 log.data && console.groupEnd(); | |
| 51 }); | |
| 52 } | |
| 53 }; | |
| 54 | |
| 55 // polling dirty checker | |
| 56 // flush periodically if platform does not have object observe. | |
| 57 if (!Observer.hasObjectObserve) { | |
| 58 var FLUSH_POLL_INTERVAL = 125; | |
| 59 window.addEventListener('WebComponentsReady', function() { | |
| 60 flush(); | |
| 61 // watch document visiblity to toggle dirty-checking | |
| 62 var visibilityHandler = function() { | |
| 63 // only flush if the page is visibile | |
| 64 if (document.visibilityState === 'hidden') { | |
| 65 if (scope.flushPoll) { | |
| 66 clearInterval(scope.flushPoll); | |
| 67 } | |
| 68 } else { | |
| 69 scope.flushPoll = setInterval(flush, FLUSH_POLL_INTERVAL); | |
| 70 } | |
| 71 }; | |
| 72 if (typeof document.visibilityState === 'string') { | |
| 73 document.addEventListener('visibilitychange', visibilityHandler); | |
| 74 } | |
| 75 visibilityHandler(); | |
| 76 }); | |
| 77 } else { | |
| 78 // make flush a no-op when we have Object.observe | |
| 79 flush = function() {}; | |
| 80 } | |
| 81 | |
| 82 if (window.CustomElements && !CustomElements.useNative) { | |
| 83 var originalImportNode = Document.prototype.importNode; | |
| 84 Document.prototype.importNode = function(node, deep) { | |
| 85 var imported = originalImportNode.call(this, node, deep); | |
| 86 CustomElements.upgradeAll(imported); | |
| 87 return imported; | |
| 88 }; | |
| 89 } | |
| 90 | |
| 91 // exports | |
| 92 scope.flush = flush; | |
| 93 // bc | |
| 94 Platform.flush = flush; | |
| 95 | |
| 96 })(window.Polymer); | |
| 97 | |
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Chromium Code Reviews
Issue 1400473008:
Roll Observatory packages and add a roll script (Closed)
Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master