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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">
<link rel="import" href="../web-animations.html">
<!--
`<cascaded-animation>` applies an animation on an array of elements with a delay between each.
the delay defaults to 50ms.
Configuration:
```
{
name: 'cascaded-animation',
animation: <animation-name>,
nodes: <array-of-nodes>,
nodeDelay: <node-delay-in-ms>,
timing: <animation-timing>
}
```
-->
<script>
Polymer({
is: 'cascaded-animation',
behaviors: [
Polymer.NeonAnimationBehavior
],
/**
* @param {{
* animation: string,
* nodes: !Array<!Element>,
* nodeDelay: (number|undefined),
* timing: (Object|undefined)
* }} config
*/
configure: function(config) {
this._animations = [];
var nodes = config.nodes;
var effects = [];
var nodeDelay = config.nodeDelay || 50;
config.timing = config.timing || {};
config.timing.delay = config.timing.delay || 0;
var oldDelay = config.timing.delay;
var abortedConfigure;
for (var node, index = 0; node = nodes[index]; index++) {
config.timing.delay += nodeDelay;
config.node = node;
var animation = document.createElement(config.animation);
if (animation.isNeonAnimation) {
var effect = animation.configure(config);
this._animations.push(animation);
effects.push(effect);
} else {
console.warn(this.is + ':', config.animation, 'not found!');
abortedConfigure = true;
break;
}
}
config.timing.delay = oldDelay;
config.node = null;
// if a bad animation was configured, abort config.
if (abortedConfigure) {
return;
}
this._effect = new GroupEffect(effects);
return this._effect;
},
complete: function() {
for (var animation, index = 0; animation = this._animations[index]; index++) {
animation.complete(animation.config);
}
}
});
</script>
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