demo D172

Chart events in React

Click, hover and legend, wired to your app

chart.on('click' | 'hover' | 'legend')

This wires a chart's click, hover and legend interactions to your own application code. It lets a chart drive whatever your app needs when a reader interacts with it, beyond the grid, from a small set of events.

Building…

Loading a live grid…

This is the React version. The grid mounts through the createLatticeGrid adapter, which takes its configuration as ordinary props and hands back the live grid through a ref. The grid below is the same one every other tab runs.

The configuration

<link rel="stylesheet" href="https://cdn.latticegrid.dev/lattice-grid@1.107.0/lattice-grid.min.css">

<div id="app"></div>

<script type="module">
  import React from 'https://esm.sh/react@18';
  import { createRoot } from 'https://esm.sh/react-dom@18/client';
  import { createGrid } from 'https://cdn.latticegrid.dev/lattice-grid@1.107.0/lattice-grid.esm.min.js';
  import { createLatticeReact } from 'https://cdn.latticegrid.dev/lattice-grid@1.107.0/modules/react.esm.min.js';
  import { createChart } from 'https://cdn.latticegrid.dev/lattice-grid@1.107.0/modules/charts.esm.min.js';

  const { LatticeGrid, LatticeChart } = createLatticeReact({ React, createGrid, createChart });

  const columns = [
    { field: 'circuit', title: 'Circuit', layout: { width: 180 } },
    { field: 'region', title: 'Region', filter: { type: 'set' } },
    { field: 'status', title: 'Status', filter: { type: 'set' } },
    { field: 'bandwidth', title: 'Bandwidth', type: 'number' },
    { field: 'charge', title: 'Monthly charge', type: 'number',
      format: { style: 'currency', currency: 'GBP' }, total: 'sum' },
  ];

  const rows = [/* circuit records */];

  // Every chart event hands you one flat payload. Read the parts you want off
  // it: category and value on a click, category on a hover, label and hidden
  // on a legend toggle.
  function App() {
    const [grid, setGrid] = React.useState(null);

    return (
      <>
        {grid && (
          <LatticeChart
            grid={grid} type="pie" x="status" y="charge" title="Charge by status"
            onClick={(e) => console.log('click', e.category, e.value)}
            onHover={(e) => console.log('hover', e.category)}
            onLegend={(e) => console.log('legend', e.label, e.hidden)}
            style={{ height: '260px' }}
          />
        )}
        <LatticeGrid
          rowKey="id"
          columns={columns}
          rows={rows}
          onGridReady={setGrid}
          style={{ height: '340px', marginTop: '14px' }}
        />
      </>
    );
  }

  createRoot(document.getElementById('app')).render(<App />);
</script>