neon-shared-element-animation-behavior.html
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<!--
@license
Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="neon-animation-behavior.html">
<script>
/**
* Use `Polymer.NeonSharedElementAnimationBehavior` to implement shared element animations.
* @polymerBehavior Polymer.NeonSharedElementAnimationBehavior
*/
Polymer.NeonSharedElementAnimationBehaviorImpl = {
properties: {
/**
* Cached copy of shared elements.
*/
sharedElements: {
type: Object
}
},
/**
* Finds shared elements based on `config`.
*/
findSharedElements: function(config) {
var fromPage = config.fromPage;
var toPage = config.toPage;
if (!fromPage || !toPage) {
console.warn(this.is + ':', !fromPage ? 'fromPage' : 'toPage', 'is undefined!');
return null;
};
if (!fromPage.sharedElements || !toPage.sharedElements) {
console.warn(this.is + ':', 'sharedElements are undefined for', !fromPage.sharedElements ? fromPage : toPage);
return null;
};
var from = fromPage.sharedElements[config.id]
var to = toPage.sharedElements[config.id];
if (!from || !to) {
console.warn(this.is + ':', 'sharedElement with id', config.id, 'not found in', !from ? fromPage : toPage);
return null;
}
this.sharedElements = {
from: from,
to: to
};
return this.sharedElements;
}
};
/** @polymerBehavior Polymer.NeonSharedElementAnimationBehavior */
Polymer.NeonSharedElementAnimationBehavior = [
Polymer.NeonAnimationBehavior,
Polymer.NeonSharedElementAnimationBehaviorImpl
];
</script>