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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">
<!--
`<opaque-animation>` makes an element `opacity:1` for the duration of the animation. Used to prevent
webkit/safari from drawing a frame before an animation for elements that animate from display:none.
-->
<script>
Polymer({
is: 'opaque-animation',
behaviors: [
Polymer.NeonAnimationBehavior
],
configure: function(config) {
var node = config.node;
this._effect = new KeyframeEffect(node, [
{'opacity': '1'},
{'opacity': '1'}
], this.timingFromConfig(config));
node.style.opacity = '0';
return this._effect;
},
complete: function(config) {
config.node.style.opacity = '';
}
});
</script>
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