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| 1 | |
| 2 | |
| 3 /** | |
| 4 * Use `Polymer.NeonSharedElementAnimationBehavior` to implement shared elemen
t animations. | |
| 5 * @polymerBehavior | |
| 6 */ | |
| 7 Polymer.NeonSharedElementAnimationBehavior = [Polymer.NeonAnimationBehavior, { | |
| 8 | |
| 9 properties: { | |
| 10 | |
| 11 /** | |
| 12 * Cached copy of shared elements. | |
| 13 */ | |
| 14 sharedElements: { | |
| 15 type: Object | |
| 16 } | |
| 17 | |
| 18 }, | |
| 19 | |
| 20 /** | |
| 21 * Finds shared elements based on `config`. | |
| 22 */ | |
| 23 findSharedElements: function(config) { | |
| 24 var fromPage = config.fromPage; | |
| 25 var toPage = config.toPage; | |
| 26 if (!fromPage || !toPage) { | |
| 27 console.warn(this.is + ':', !fromPage ? 'fromPage' : 'toPage', 'is undef
ined!'); | |
| 28 return null; | |
| 29 }; | |
| 30 | |
| 31 if (!fromPage.sharedElements || !toPage.sharedElements) { | |
| 32 console.warn(this.is + ':', 'sharedElements are undefined for', !fromPag
e.sharedElements ? fromPage : toPage); | |
| 33 return null; | |
| 34 }; | |
| 35 | |
| 36 var from = fromPage.sharedElements[config.id] | |
| 37 var to = toPage.sharedElements[config.id]; | |
| 38 | |
| 39 if (!from || !to) { | |
| 40 console.warn(this.is + ':', 'sharedElement with id', config.id, 'not fou
nd in', !from ? fromPage : toPage); | |
| 41 return null; | |
| 42 } | |
| 43 | |
| 44 this.sharedElements = { | |
| 45 from: from, | |
| 46 to: to | |
| 47 }; | |
| 48 return this.sharedElements; | |
| 49 } | |
| 50 | |
| 51 }]; | |
| 52 | |
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