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| 1 | |
| 2 | |
| 3 (function() { | |
| 4 | |
| 5 'use strict'; | |
| 6 | |
| 7 function classNames(obj) { | |
| 8 var classNames = []; | |
| 9 for (var key in obj) { | |
| 10 if (obj.hasOwnProperty(key) && obj[key]) { | |
| 11 classNames.push(key); | |
| 12 } | |
| 13 } | |
| 14 | |
| 15 return classNames.join(' '); | |
| 16 } | |
| 17 | |
| 18 Polymer({ | |
| 19 | |
| 20 is: 'paper-toolbar', | |
| 21 | |
| 22 hostAttributes: { | |
| 23 'role': 'toolbar' | |
| 24 }, | |
| 25 | |
| 26 properties: { | |
| 27 | |
| 28 /** | |
| 29 * Controls how the items are aligned horizontally when they are placed | |
| 30 * at the bottom. | |
| 31 * Options are `start`, `center`, `end`, `justified` and `around`. | |
| 32 * | |
| 33 * @attribute bottomJustify | |
| 34 * @type string | |
| 35 * @default '' | |
| 36 */ | |
| 37 bottomJustify: { | |
| 38 type: String, | |
| 39 value: '' | |
| 40 }, | |
| 41 | |
| 42 /** | |
| 43 * Controls how the items are aligned horizontally. | |
| 44 * Options are `start`, `center`, `end`, `justified` and `around`. | |
| 45 * | |
| 46 * @attribute justify | |
| 47 * @type string | |
| 48 * @default '' | |
| 49 */ | |
| 50 justify: { | |
| 51 type: String, | |
| 52 value: '' | |
| 53 }, | |
| 54 | |
| 55 /** | |
| 56 * Controls how the items are aligned horizontally when they are placed | |
| 57 * in the middle. | |
| 58 * Options are `start`, `center`, `end`, `justified` and `around`. | |
| 59 * | |
| 60 * @attribute middleJustify | |
| 61 * @type string | |
| 62 * @default '' | |
| 63 */ | |
| 64 middleJustify: { | |
| 65 type: String, | |
| 66 value: '' | |
| 67 } | |
| 68 | |
| 69 }, | |
| 70 | |
| 71 attached: function() { | |
| 72 this._observer = this._observe(this); | |
| 73 this._updateAriaLabelledBy(); | |
| 74 }, | |
| 75 | |
| 76 detached: function() { | |
| 77 if (this._observer) { | |
| 78 this._observer.disconnect(); | |
| 79 } | |
| 80 }, | |
| 81 | |
| 82 _observe: function(node) { | |
| 83 var observer = new MutationObserver(function() { | |
| 84 this._updateAriaLabelledBy(); | |
| 85 }.bind(this)); | |
| 86 observer.observe(node, { | |
| 87 childList: true, | |
| 88 subtree: true | |
| 89 }); | |
| 90 return observer; | |
| 91 }, | |
| 92 | |
| 93 _updateAriaLabelledBy: function() { | |
| 94 var labelledBy = []; | |
| 95 var contents = Polymer.dom(this.root).querySelectorAll('content'); | |
| 96 for (var content, index = 0; content = contents[index]; index++) { | |
| 97 var nodes = Polymer.dom(content).getDistributedNodes(); | |
| 98 for (var node, jndex = 0; node = nodes[jndex]; jndex++) { | |
| 99 if (node.hasAttribute && node.hasAttribute('title')) { | |
| 100 if (node.id) { | |
| 101 labelledBy.push(node.id); | |
| 102 } else { | |
| 103 var id = 'paper-toolbar-label-' + Math.floor(Math.random() * 100
00); | |
| 104 node.id = id; | |
| 105 labelledBy.push(id); | |
| 106 } | |
| 107 } | |
| 108 } | |
| 109 } | |
| 110 if (labelledBy.length > 0) { | |
| 111 this.setAttribute('aria-labelledby', labelledBy.join(' ')); | |
| 112 } | |
| 113 }, | |
| 114 | |
| 115 _computeBarClassName: function(barJustify) { | |
| 116 var classObj = { | |
| 117 center: true, | |
| 118 horizontal: true, | |
| 119 layout: true, | |
| 120 'toolbar-tools': true | |
| 121 }; | |
| 122 | |
| 123 // If a blank string or any falsy value is given, no other class name is | |
| 124 // added. | |
| 125 if (barJustify) { | |
| 126 var justifyClassName = (barJustify === 'justified') ? | |
| 127 barJustify : | |
| 128 barJustify + '-justified'; | |
| 129 | |
| 130 classObj[justifyClassName] = true; | |
| 131 } | |
| 132 | |
| 133 return classNames(classObj); | |
| 134 } | |
| 135 | |
| 136 }); | |
| 137 | |
| 138 }()); | |
| 139 | |
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