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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
-->

<!--
The progress bars are for situations where the percentage completed can be 
determined. They give users a quick sense of how much longer an operation 
will take.

Example:

    <paper-progress value="10"></paper-progress>
    
There is also a secondary progress which is useful for displaying intermediate 
progress, such as the buffer level during a streaming playback progress bar.

Example:

    <paper-progress value="10" secondaryProgesss="30"></paper-progress>

Styling progress bar:

To change the active progress bar color:

    paper-progress::shadow #activeProgress {
      background-color: #e91e63;
    }

To change the secondary progress bar color:

    paper-progress::shadow #secondaryProgress {
      background-color: #f8bbd0;
    }
    
To change the progress bar background color:

    paper-progress::shadow #progressContainer {
      background-color: #64ffda;
    }

@group Paper Elements
@element paper-progress
@extends core-range
@homepage github.io
-->

<link rel="import" href="../core-range/core-range.html">

<polymer-element name="paper-progress" extends="core-range" attributes="secondaryProgress">

  <template>
  
    <link rel="stylesheet" href="paper-progress.css">
  
    <div id="progressContainer" role="progressbar" aria-valuenow="{{value}}" aria-valuemin="{{min}}" aria-valuemax="{{max}}">
    
      <div id="secondaryProgress" style="width: {{secondaryRatio}}%;"></div>
      <div id="activeProgress" style="width: {{ratio}}%;"></div>
      
    </div>
    
  </template>
  
  <script>
  
    Polymer('paper-progress', {
      
      /**
       * The number that represents the current secondary progress.
       *
       * @attribute secondaryProgress
       * @type number
       * @default 0
       */
      secondaryProgress: 0,
      
      step: 0,
      
      observe: {
        'value secondaryProgress min max': 'update'
      },
      
      update: function() {
        this.super();
        this.secondaryProgress = this.clampValue(this.secondaryProgress);
        this.secondaryRatio = this.calcRatio(this.secondaryProgress) * 100;
      }
      
    });
    
  </script>
  
</polymer-element>