text: import React from 'react';
  import ReactDOM from 'react-dom';
  
  import JqxTreeGrid from '../../../jqwidgets-react/react_jqxtreegrid.js';
  
  class App extends React.Component {
      componentDidMount() {
          this.refs.myTreeGrid.expandRow(1);
          this.refs.myTreeGrid.expandRow(2);
      }
      render () {
          let data = [
                 {
                     'id': '1', 'name': 'Corporate Headquarters', 'budget': '1230000', 'location': 'Las Vegas',
                     'children':
                      [
                          {
                              'id': '2', 'name': 'Finance Division', 'budget': '423000', 'location': 'San Antonio',
                              'children':
                              [
                                  {
                                      'id': '4', 'name': 'Investment Department', 'budget': '310000', 'location': 'San Antonio',
                                      'children':
                                      [
                                          { 'id': '5', 'name': 'Banking Office', 'budget': '240000', 'location': 'San Antonio' },
                                          { 'id': '6', 'name': 'Bonds Office', 'budget': '70000', 'location': 'San Antonio' },
                                      ]
                                  },
                               { 'id': '3', 'name': 'Accounting Department', 'budget': '113000', 'location': 'San Antonio' }
                              ]
                          },
                          {
                              'id': '7', 'name': 'Operations Division', 'budget': '600000', 'location': 'Miami',
                              'children':
                              [
                                  { 'id': '8', 'name': 'Manufacturing Department', 'budget': '300000', 'location': 'Miami' },
                                  { 'id': '9', 'name': 'Public Relations Department', 'budget': '200000', 'location': 'Miami' },
                                  { 'id': '10', 'name': 'Sales Department', 'budget': '100000', 'location': 'Miami' }
                              ]
                          },
                          { 'id': '11', 'name': 'Research Division', 'budget': '200000', 'location': 'Boston' },
                          { 'id': '12', 'name': 'Development Division', 'budget': '300000', 'location': 'Boston' }
                      ]
                 }
          ];
          let source =
           {
               dataType: 'json',
               dataFields: [
                    { name: 'name', type: 'string' },
                    { name: 'budget', type: 'number' },
                    { name: 'id', type: 'number' },
                    { name: 'children', type: 'array' },
                    { name: 'location', type: 'string' }
               ],
               hierarchy:
                   {
                       root: 'children'
                   },
               localData: data,
               id: 'id'
           };
          let dataAdapter = new $.jqx.dataAdapter(source, {
              loadComplete: () => {
              }
          });
          // create Tree Grid
          let columns = [
              { text: 'Name', align: 'left', dataField: 'name', width: 300 },
              { text: 'Location', dataField: 'location', cellsAlign: 'left', align: 'left', width: 250 },
              {
                  text: 'Budget', cellsAlign: 'right', align: 'right', dataField: 'budget', cellsFormat: 'c2',
                  aggregates: [{
                      'Total':
                      (aggregatedValue, currentValue, column, record, aggregateLevel) => {
                          if (record.checked && record.level === aggregateLevel) {
                              return aggregatedValue + currentValue;
                          }
                          else {
                              return aggregatedValue;
                          }
                      }
                  }],
                  aggregatesRenderer: (aggregatesText, column, element, aggregates, type) => {
                      let renderString = '';
                      if (type == 'aggregates') {
                          renderString = '<div style="margin: 4px; float: right;  height: 100%;">';
                      }
                      else {
                          renderString = '<div style="float: right;  height: 100%;">';
                      }
  
                      let euro = dataAdapter.formatNumber(0.74 * aggregates.Total, 'f2');
                      let usd = dataAdapter.formatNumber(aggregates.Total, 'f2');
                      renderString += "<table><tr><td rowspan='2'><strong>Total: </strong></td><td align='right'>" + usd + " USD</td><tr><td align='right'>" + euro + " EUR</td></tr></table>";
                      return renderString;
                  }
              }
          ];
          return (
              <JqxTreeGrid ref='myTreeGrid'
                  width={850}
                  source={dataAdapter}
                  altRows={true}
                  showSubAggregates={true}
                  showAggregates={true}
                  aggregatesHeight={55}
                  columnsResize={true}
                  checkboxes={true}
                  columns={columns}
              />
          )
      }
  }
  
  ReactDOM.render(<App />, document.getElementById('app'));
  