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| 1 |
| 2 |
| 3 Polymer('paper-tabs', { |
| 4 |
| 5 /** |
| 6 * If true, ink effect is disabled. |
| 7 * |
| 8 * @attribute noink |
| 9 * @type boolean |
| 10 * @default false |
| 11 */ |
| 12 noink: false, |
| 13 |
| 14 /** |
| 15 * If true, the bottom bar to indicate the selected tab will not be shown. |
| 16 * |
| 17 * @attribute nobar |
| 18 * @type boolean |
| 19 * @default false |
| 20 */ |
| 21 nobar: false, |
| 22 |
| 23 activateEvent: 'down', |
| 24 |
| 25 nostretch: false, |
| 26 |
| 27 selectedIndexChanged: function(old) { |
| 28 var s = this.$.selectionBar.style; |
| 29 |
| 30 if (!this.selectedItem) { |
| 31 s.width = 0; |
| 32 s.left = 0; |
| 33 return; |
| 34 } |
| 35 |
| 36 var w = 100 / this.items.length; |
| 37 |
| 38 if (this.nostretch || old === null || old === -1) { |
| 39 s.width = w + '%'; |
| 40 s.left = this.selectedIndex * w + '%'; |
| 41 return; |
| 42 } |
| 43 |
| 44 var m = 5; |
| 45 this.$.selectionBar.classList.add('expand'); |
| 46 if (old < this.selectedIndex) { |
| 47 s.width = w + w * (this.selectedIndex - old) - m + '%'; |
| 48 } else { |
| 49 s.width = w + w * (old - this.selectedIndex) - m + '%'; |
| 50 s.left = this.selectedIndex * w + m + '%'; |
| 51 } |
| 52 }, |
| 53 |
| 54 barTransitionEnd: function() { |
| 55 var cl = this.$.selectionBar.classList; |
| 56 if (cl.contains('expand')) { |
| 57 cl.remove('expand'); |
| 58 cl.add('contract'); |
| 59 var s = this.$.selectionBar.style; |
| 60 var w = 100 / this.items.length; |
| 61 s.width = w + '%'; |
| 62 s.left = this.selectedIndex * w + '%'; |
| 63 } else if (cl.contains('contract')) { |
| 64 cl.remove('contract'); |
| 65 } |
| 66 } |
| 67 |
| 68 }); |
| 69 |
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