npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.5.0/bower_components/paper-icon-button/paper-icon-button.html

 <!--
 Copyright (c) 2014 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
 The complete set of authors may be found at http://polymer.github.io/AUTHORS
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
 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
 -->
 
 <!--
 @group Paper Elements
 
-Material Design: <a href="https://spec.googleplex.com/quantum/components/buttons.html">Buttons</a>
+Material Design: <a href="http://www.google.com/design/spec/components/buttons.html">Buttons</a>
 
 `paper-icon-button` is a button with an image placed at the center. When the user touches
 the button, a ripple effect emanates from the center of the button.
 
-You may import `core-icons` to use with this element, or provide an URL to a custom icon.
-See `core-iconset` for more information about how to use a custom icon set.
+`paper-icon-button` includes a default icon set.  Use `icon` to specify which icon
+from the icon set to use.
+
+    <paper-icon-button icon="menu"></paper-icon-button>
+
+See [`core-iconset`](#core-iconset) for more information about
+how to use a custom icon set.
 
 Example:
 
     <link href="path/to/core-icons/core-icons.html" rel="import">
 
     <paper-icon-button icon="favorite"></paper-icon-button>
     <paper-icon-button src="star.png"></paper-icon-button>
 
 Styling
 -------
@@ skipping 23 matching lines @@
 
     <paper-icon-button src="star.png" aria-label="star"></paper-icon-button>
 
 @element paper-icon-button
 @extends paper-button-base
 @homepage github.io
 -->
 
 <link href="../polymer/polymer.html" rel="import">
 <link href="../core-icon/core-icon.html" rel="import">
+<link href="../core-icons/core-icons.html" rel="import">
 <link href="../paper-button/paper-button-base.html" rel="import">
 <link href="../paper-ripple/paper-ripple.html" rel="import">
 
 <polymer-element name="paper-icon-button" extends="paper-button-base" attributes="src icon" role="button">
 
   <template>
 
     <style>
       :host {
         display: inline-block;
         position: relative;
         padding: 8px;
         outline: none;
         -webkit-user-select: none;
+        -moz-user-select: none;
+        -ms-user-select: none;
         user-select: none;
         cursor: pointer;
         z-index: 0;
       }
 
       :host([disabled]) {
         color: #c9c9c9;
         pointer-events: none;
         cursor: auto;
       }
 
       #ripple {
         pointer-events: none;
         z-index: -1;
       }
+
+      #icon {
+        display: block;
+        pointer-events: none;
+      }
     </style>
 
     <!-- to position to ripple behind the icon -->
     <core-icon relative id="icon" src="{{src}}" icon="{{icon}}"></core-icon>
 
   </template>
 
   <script>
     Polymer({
 
@@ skipping 19 matching lines @@
          * @default ''
          */
         icon: '',
 
         recenteringTouch: true,
         fill: false
 
       },
 
       iconChanged: function(oldIcon) {
-        this.setAttribute('aria-label', this.icon);
+        var label = this.getAttribute('aria-label');
+        if (!label || label === oldIcon) {
+          this.setAttribute('aria-label', this.icon);
+        }
       }
 
     });
 
   </script>
 
 </polymer-element>