<!– @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=“../../../iron-flex-layout/iron-flex-layout.html”> <link rel=“import” href=“../../neon-shared-element-animatable-behavior.html”> <link rel=“import” href=“../../../paper-styles/typography.html”> <link rel=“import” href=“../../../paper-styles/color.html”> <link rel=“import” href=“../shared-styles.html”>

<dom-module id=“animated-grid”>

<template>
  <style include="shared-styles"></style>
  <style>
    :host {
      display: block;
      background: #000;
    }

    .tile {
      display: inline-block;
      float: left;
      vertical-align: top;
      width: calc(100% / 6);
      height: calc(100% / 3);

      @apply(--paper-font-title);
      @apply(--layout-vertical);
      @apply(--layout-center-center);
    }

    .tile:nth-of-type(1) {
      width: calc(100% / 3);
      height: calc(100% / 3 * 2);
    }

    .tile:nth-of-type(4) {
      width: calc(100% / 3);
    }

    .tile:nth-of-type(5) {
      width: calc(100% / 3);
      height: calc(100% / 3 * 2);
    }

    .tile:nth-of-type(8) {
      width: calc(100% / 3);
      height: calc(100% / 3);
    }

    .tile:nth-of-type(9) {
      position: absolute;
      top: calc(100% / 3 * 2);
      left: 0;
      width: calc(100% / 6);
      height: calc(100% / 3);
    }

    .tile:nth-of-type(10) {
      position: absolute;
      top: calc(100% / 3 * 2);
      left: calc(100% / 6);;
      width: calc(100% / 6);
      height: calc(100% / 3);
    }
  </style>

  <template is="dom-repeat" items="[[config]]">
    <div class$="[[_computeTileClass(item.color)]]">
      <span>[[item.value]]</span>
    </div>
  </template>

</template>

</dom-module>

<script>

Polymer({

  is: 'animated-grid',

  behaviors: [
    Polymer.NeonSharedElementAnimatableBehavior
  ],

  properties: {

    config: {
      type: Array,
      value: function() {
        return [
          {value: 1, color: 'blue'},
          {value: 2, color: 'red'},
          {value: 3, color: 'blue'},
          {value: 4, color: 'green'},
          {value: 5, color: 'yellow'},
          {value: 6, color: 'blue'},
          {value: 7, color: 'red'},
          {value: 8, color: 'green'},
          {value: 9, color: 'yellow'},
          {value: 10, color: 'red'}
        ]
      }
    },

    animationConfig: {
      type: Object,
      value: function() {
        return {
          'entry': [{
            name: 'cascaded-animation',
            animation: 'transform-animation',
            transformFrom: 'translateY(100%)',
            transformTo: 'none',
            timing: {
              delay: 50
            }
          }]
        }
      }
    }

  },

  attached: function() {
    this.async(function() {
      var nodeList = Polymer.dom(this.root).querySelectorAll('.tile');
      this.animationConfig['entry'][0].nodes = Array.prototype.slice.call(nodeList);
    });
  },

  _computeTileClass: function(color) {
    return 'tile ' + color + '-300';
  }

});

</script>