text: // Copyright (c) 2016 - 2017 Uber Technologies, Inc.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  
  import React from 'react';
  
  import Treemap from 'treemap';
  import ShowcaseButton from '../showcase-components/showcase-button';
  
  function _getRandomData(total) {
    const totalLeaves = total || Math.random() * 20;
    const leaves = [];
    for (let i = 0; i < totalLeaves; i++) {
      leaves.push({
        name: total ? total : String(Math.random()).slice(0, 3),
        size: Math.random() * 1000,
        color: Math.random(),
        style: {
          border: 'thin solid red'
        }
      });
    }
    return {
      title: '',
      color: 1,
      children: leaves
    };
  }
  
  export default class DynamicTreemapExample extends React.Component {
    state = {
      hoveredNode: false,
      treemapData: _getRandomData(20),
      useCirclePacking: false
    }
  
    render() {
      const {hoveredNode, useCirclePacking} = this.state;
      const treeProps = {
        animation: {
          damping: 9,
          stiffness: 300
        },
        data: this.state.treemapData,
        onLeafMouseOver: x => this.setState({hoveredNode: x}),
        onLeafMouseOut: () => this.setState({hoveredNode: false}),
        onLeafClick: () => this.setState({treemapData: _getRandomData()}),
        height: 300,
        mode: this.state.useCirclePacking ? 'circlePack' : 'squarify',
        getLabel: x => x.name,
        width: 350
      };
      return (
        <div className="dynamic-treemap-example">
          <ShowcaseButton
            onClick={() => this.setState({useCirclePacking: !useCirclePacking})}
            buttonContent={'TOGGLE CIRCLE PACK'} />
          <Treemap {...treeProps}/>
          click above to the update data
          {hoveredNode && hoveredNode.value}
        </div>
      );
    }
  
  }
  