SGH / COMPONENTS

  <!--
  @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="../iron-flex-layout/classes/iron-flex-layout.html">

  <link rel="import" href="../iron-icon/iron-icon.html">
  <link rel="import" href="../paper-behaviors/paper-button-behavior.html">

  <link rel="import" href="../paper-material/paper-material.html">

  <link rel="import" href="../paper-ripple/paper-ripple.html">

  <link rel="import" href="../paper-styles/color.html">
  <link rel="import" href="../paper-styles/default-theme.html">

  
  <!--

  Material design: [Floating Action Button](https://www.google.com/design/spec/components/buttons-floating-action-button.html)

  
  `paper-fab` is a floating action button. It contains an image placed in the center and
  comes in two sizes: regular size and a smaller size by applying the attribute `mini`. When
  the user touches the button, a ripple effect emanates from the center of the button.
  
  You may import `iron-icons` to use with this element, or provide a URL to a custom icon.
  See `iron-iconset` for more information about how to use a custom icon set.
  
  Example:
  
      <link href="path/to/iron-icons/iron-icons.html" rel="import">
  
      <paper-fab icon="add"></paper-fab>
      <paper-fab mini icon="favorite"></paper-fab>
      <paper-fab src="star.png"></paper-fab>
  
  
  ### Styling
  
  The following custom properties and mixins are available for styling:
  
  Custom property | Description | Default
  ----------------|-------------|----------
  `--paper-fab-background` | The background color of the button | `--accent-color`
  `--paper-fab-keyboard-focus-background` | The background color of the button when focused | `--paper-pink-900`
  `--paper-fab-disabled-background` | The background color of the button when it's disabled | `--paper-grey-300`
  `--paper-fab-disabled-text` | The text color of the button when it's disabled | `--paper-grey-500`
  `--paper-fab` | Mixin applied to the button | `{}`
  `--paper-fab-mini` | Mixin applied to a mini button | `{}`
  `--paper-fab-disabled` | Mixin applied to a disabled button | `{}`

  `--paper-fab-iron-icon` | Mixin applied to the iron-icon within the button | `{}`

  
  @group Paper Elements
  @demo demo/index.html
  
  -->
  
  <dom-module id="paper-fab">

    <template strip-whitespace>

      <style include="paper-material">

        :host {
          display: inline-block;
          position: relative;
          outline: none;
          -moz-user-select: none;
          -ms-user-select: none;
          -webkit-user-select: none;
          -webkit-tap-highlight-color: rgba(0,0,0,0);
          user-select: none;
          cursor: pointer;
  
          box-sizing: border-box;
          min-width: 0;
          width: 56px;
          height: 56px;
          background: var(--paper-fab-background, --accent-color);
          color: var(--text-primary-color);
          border-radius: 50%;
          padding: 16px;
  
          z-index: 0;
  
          @apply(--layout-vertical);
          @apply(--layout-center-center);
          @apply(--paper-fab);
        }

        :host([mini]) {
          width: 40px;
          height: 40px;
          padding: 8px;

          @apply(--paper-fab-mini);
        }

        :host([disabled]) {
          color: var(--paper-fab-disabled-text, --paper-grey-500);
          background: var(--paper-fab-disabled-background, --paper-grey-300);
          @apply(--paper-fab-disabled);
        }

        iron-icon {
          @apply(--paper-fab-iron-icon);
        }

        :host(.keyboard-focus) {
          background: var(--paper-fab-keyboard-focus-background, --paper-pink-900);
        }
      </style>
  
      <iron-icon id="icon" src="[[src]]" icon="[[icon]]"></iron-icon>

    </template>
  </dom-module>

  <script>
    Polymer({
      is: 'paper-fab',
  
      behaviors: [
        Polymer.PaperButtonBehavior
      ],
  
      properties: {
        /**
         * The URL of an image for the icon. If the src property is specified,
         * the icon property should not be.
         *
         * @attribute src
         * @type string
         * @default ''
         */
        src: {
          type: String,
          value: ''
        },
  
        /**
         * Specifies the icon name or index in the set of icons available in
         * the icon's icon set. If the icon property is specified,
         * the src property should not be.
         *
         * @attribute icon
         * @type string
         * @default ''
         */
        icon: {
          type: String,
          value: ''
        },
  
        /**
         * Set this to true to style this is a "mini" FAB.
         *
         * @attribute mini
         * @type boolean
         * @default false
         */
        mini: {
          type: Boolean,

          value: false,
          reflectToAttribute: true

        }

      }

    });
  </script>