add iron-list

dashboard-ui/bower_components/iron-scroll-target-behavior/demo/x-scrollable.html

@@ -0,0 +1,105 @@
+<!--
+@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>