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bower_components/iron-dropdown/demo/grow-height-animation.html 1.07 KB
73bcce88   luigser   COMPONENTS
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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/neon-animation-behavior.html">
  
  <script>
    Polymer({
      is: 'expand-animation',
  
      behaviors: [
        Polymer.NeonAnimationBehavior
      ],
  
      configure: function(config) {
        var node = config.node;
  
        var height = node.getBoundingClientRect().height;
  
        this._effect = new KeyframeEffect(node, [{
          height: (height / 2) + 'px'
        }, {
          height: height + 'px'
        }], this.timingFromConfig(config));
  
        return this._effect;
      }
    });
  </script>