<!– @license Copyright © 2015 The Polymer Project Authors. All rights reserved. This code may only be used under the BSD style license found at polymer.github.io/LICENSE.txt The complete set of authors may be found at polymer.github.io/AUTHORS.txt The complete set of contributors may be found at 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 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”>

<!– `<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>