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bower_components/neon-animation/animations/cascaded-animation.html 2.65 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-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
      ],
  
      properties: {
  
        /** @type {!Polymer.IronMeta} */
        _animationMeta: {
          type: Object,
          value: function() {
            return new Polymer.IronMeta({type: 'animation'});
          }
        }
  
      },
  
      /**
       * @param {{
       *   animation: string,
       *   nodes: !Array<!Element>,
       *   nodeDelay: (number|undefined),
       *   timing: (Object|undefined)
       *  }} config
       */
      configure: function(config) {
        var animationConstructor = /** @type {Function} */ (
            this._animationMeta.byKey(config.animation));
        if (!animationConstructor) {
          console.warn(this.is + ':', 'constructor for', config.animation, 'not found!');
          return;
        }
  
        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;
        for (var node, index = 0; node = nodes[index]; index++) {
          config.timing.delay += nodeDelay;
          config.node = node;
  
          var animation = new animationConstructor();
          var effect = animation.configure(config);
  
          this._animations.push(animation);
          effects.push(effect);
        }
        config.timing.delay = oldDelay;
  
        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>