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bower_components/iron-scroll-target-behavior/demo/x-scrollable.html 2.19 KB
a53fbbed   Renato De Donato   select-dataset ne...
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  <!--
  @license
  Copyright (c) 2016 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="../iron-scroll-target-behavior.html">
  
  <dom-module id="x-scrollable">
  
    <style>
  
      :host {
        display: block;
        font: 14px arial;
      }
  
      .scrollState {
        border-left: 1px solid #ccc;
        border-right: 1px solid #ccc;
        border-bottom: 1px solid #ccc;
        font-weight: bold;
        background-color: #eee;
        position: fixed;
        top: 0;
        left: calc(50% - 100px);
        padding: 10px;
        width: 220px;
        text-align: center;
      }
  
      .item {
        border-bottom: 1px solid #ccc;
        background-color: white;
        padding: 20px;
        width: 200%;
      }
  
    </style>
  
    <template>
  
      <div class="scrollState">scrollTop: [[xScrollTop]] - scrollLeft: [[xScrollLeft]]</div>
  
      <template is="dom-repeat" items="[[_getItems(itemCount)]]">
        <div class="item">[[index]]</div>
      </template>
  
    </template>
  
  </dom-module>
  
  <script>
    Polymer({
  
      is: 'x-scrollable',
  
      properties: {
  
        xScrollTop: {
          type: Number,
          readOnly: true,
          value: 0
        },
  
        xScrollLeft: {
          type: Number,
          readOnly: true,
          value: 0
        },
  
        itemCount: {
          type: Number,
          value: 200
        }
  
      },
  
      behaviors: [
        Polymer.IronScrollTargetBehavior
      ],
  
      attached: function() {
        this._scrollHandler();
      },
  
      _scrollHandler: function() {
        this._setXScrollTop(this._scrollTop);
        this._setXScrollLeft(this._scrollLeft);
      },
  
      _getItems: function(itemCount) {
        var items = new Array(itemCount);
        while (itemCount > 0) {
          items[--itemCount] = true;
        }
        return items;
      }
    });
  </script>