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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://polymer.g
ithub.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/CONTRI
BUTORS.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/PATEN
TS.txt | |
| 8 --> | |
| 9 <!-- | |
| 10 /** | |
| 11 * @group Polymer Core Elements | |
| 12 * @element core-media-query | |
| 13 * @status beta | |
| 14 * @homepage github.io | |
| 15 * | |
| 16 * core-media-query can be used to data bind to a CSS media query. | |
| 17 * The "query" property is a bare CSS media query. | |
| 18 * The "queryMatches" property will be a boolean representing if the page matche
s that media query. | |
| 19 * | |
| 20 * core-media-query uses media query listeners to dynamically update the "queryM
atches" property. | |
| 21 * A "core-media-change" event also fires when queryMatches changes. | |
| 22 * | |
| 23 * Example: | |
| 24 * | |
| 25 * <core-media-query query="max-width: 640px" queryMatches="{{phoneScreen}}
"></core-media-query> | |
| 26 * | |
| 27 */ | |
| 28 | |
| 29 /** | |
| 30 * Fired when the media query state changes | |
| 31 * | |
| 32 * @event core-media-change | |
| 33 */ | |
| 34 --> | |
| 35 <link rel="import" href="../polymer/polymer.html"> | |
| 36 | |
| 37 <polymer-element name="core-media-query" attributes="query queryMatches"> | |
| 38 <template> | |
| 39 <style> | |
| 40 :host { | |
| 41 display: none; | |
| 42 } | |
| 43 </style> | |
| 44 </template> | |
| 45 <script> | |
| 46 Polymer('core-media-query', { | |
| 47 | |
| 48 /** | |
| 49 * The Boolean return value of the media query | |
| 50 * | |
| 51 * @attribute queryMatches | |
| 52 * @type Boolean | |
| 53 * @default false | |
| 54 */ | |
| 55 queryMatches: false, | |
| 56 | |
| 57 /** | |
| 58 * The CSS media query to evaulate | |
| 59 * | |
| 60 * @attribute query | |
| 61 * @type string | |
| 62 * @default '' | |
| 63 */ | |
| 64 query: '', | |
| 65 ready: function() { | |
| 66 this._mqHandler = this.queryHandler.bind(this); | |
| 67 this._mq = null; | |
| 68 }, | |
| 69 queryChanged: function() { | |
| 70 if (this._mq) { | |
| 71 this._mq.removeListener(this._mqHandler); | |
| 72 } | |
| 73 var query = this.query; | |
| 74 if (query[0] !== '(') { | |
| 75 query = '(' + this.query + ')'; | |
| 76 } | |
| 77 this._mq = window.matchMedia(query); | |
| 78 this._mq.addListener(this._mqHandler); | |
| 79 this.queryHandler(this._mq); | |
| 80 }, | |
| 81 queryHandler: function(mq) { | |
| 82 this.queryMatches = mq.matches; | |
| 83 this.asyncFire('core-media-change', mq); | |
| 84 } | |
| 85 }); | |
| 86 </script> | |
| 87 </polymer-element> | |
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Chromium Code Reviews
Issue 786953007:
npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions (Closed)
Base URL: https://chromium.googlesource.com/infra/third_party/npm_modules.git@master