nvd3-multi-bar.html

<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="nvd3-behavior.html">

<!--
An element to create multi bar chart using nvd3.

Example:

    <nvd3-multi-bar
    data="[[data]]"
    height="100"
    width="400"
    auto-resize
    show-legend></nvd3-multi-bar>

Data Format:
```
[{
  "key": "Stream0",
  "values": [{
    "x": 0,
    "y": 0.17657645842991837
  }, {
    "x": 1,
    "y": 0.17056295930152043
  }, {
    "x": 2,
    "y": 0.1673443365488047
  }, {
    "x": 3,
    "y": 0.11723298445616456
  }]
}, {
  "key": "Stream1",
  "values": [{
    "x": 0,
    "y": 1.2743446048854001
  }, {
    "x": 1,
    "y": 0.22290307978708743
  }, {
    "x": 2,
    "y": 0.11314237776897834
  }, {
    "x": 3,
    "y": 0.13269772172547029
  }]
}, {
  "key": "Stream2",
  "values": [{
    "x": 0,
    "y": 4.56961163175497
  }, {
    "x": 1,
    "y": 0.6716892057759072
  }, {
    "x": 2,
    "y": 0.1281580516020834
  }, {
    "x": 3,
    "y": 0.1961314488771337
  }]
}]
```

@group NVD3 Elements
@element nvd3-multi-bar
@demo demo/nvd3-multi-bar.html
@hero hero.svg
-->

<dom-module id="nvd3-multi-bar">
  <template>
    <style include="nvd3-shared-styles"></style>
    <!-- We need to put svg tag inside a div to set correct margins -->
    <div>
      <svg id="svg"></svg>
    </div>
  </template>

  <script>
    Polymer({
      is: 'nvd3-multi-bar',
      behaviors: [NVD3.ChartBehavior],
      properties: {
        /**
         * NVD3 chart object.
         */
        _chart: {
          type: Object,
          value: function() {
            return nv.models.multiBarChart();
          }
        },

        /**
         * Whether to display the legend or not
         */
        showLegend: {
          type: Boolean,
          value: false
        },

        /**
         * NVD3 components which are used in this chart.
         * It's required for binding events.
         */
        _components: {
          type: Array,
          value: ['multibar', 'legend', 'controls', 'xAxis', 'yAxis', 'tooltip']
        }
      }
    });
  </script>
</dom-module>