WebCompDev / COMPONENTS

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  <link rel="import" href="../polymer/polymer.html">

  <link rel="import" href="../iron-flex-layout/iron-flex-layout.html">

  <link rel="import" href="../paper-styles/color.html">
  <link rel="import" href="paper-spinner-behavior.html">
  <link rel="import" href="paper-spinner-styles.html">

  
  <!--

  Material design: [Progress & activity](https://www.google.com/design/spec/components/progress-activity.html)
  
  Element providing a multiple color material design circular spinner.

  
      <paper-spinner active></paper-spinner>
  
  The default spinner cycles between four layers of colors; by default they are

  blue, red, yellow and green. It can be customized to cycle between four different
  colors. Use <paper-spinner-lite> for single color spinners.

  
  ### Accessibility
  
  Alt attribute should be set to provide adequate context for accessibility. If not provided,
  it defaults to 'loading'.
  Empty alt can be provided to mark the element as decorative if alternative content is provided
  in another form (e.g. a text block following the spinner).
  
      <paper-spinner alt="Loading contacts list" active></paper-spinner>
  
  ### Styling
  
  The following custom properties and mixins are available for styling:
  
  Custom property | Description | Default
  ----------------|-------------|----------
  `--paper-spinner-layer-1-color` | Color of the first spinner rotation | `--google-blue-500`
  `--paper-spinner-layer-2-color` | Color of the second spinner rotation | `--google-red-500`
  `--paper-spinner-layer-3-color` | Color of the third spinner rotation | `--google-yellow-500`
  `--paper-spinner-layer-4-color` | Color of the fourth spinner rotation | `--google-green-500`

  `--paper-spinner-stroke-width` | The width of the spinner stroke | 3px

  
  @group Paper Elements
  @element paper-spinner
  @hero hero.svg
  @demo demo/index.html
  -->
  
  <dom-module id="paper-spinner">

    <template strip-whitespace>
      <style include="paper-spinner-styles"></style>

      <div id="spinnerContainer" class-name="[[__computeContainerClasses(active, __coolingDown)]]">

        <div class="spinner-layer layer-1">

          <div class="circle-clipper left"></div>
          <div class="circle-clipper right"></div>

        </div>
  
        <div class="spinner-layer layer-2">

          <div class="circle-clipper left"></div>
          <div class="circle-clipper right"></div>

        </div>
  
        <div class="spinner-layer layer-3">

          <div class="circle-clipper left"></div>
          <div class="circle-clipper right"></div>

        </div>
  
        <div class="spinner-layer layer-4">

          <div class="circle-clipper left"></div>
          <div class="circle-clipper right"></div>

        </div>
      </div>

    </template>
  
    <script>

      Polymer({

        is: 'paper-spinner',
  

        behaviors: [
          Polymer.PaperSpinnerBehavior
        ]

      });

    </script>

  </dom-module>