Chart events

<script>
  import { createGrid } from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/lattice-grid.esm.min.js';
  import createLatticeAction from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/modules/svelte.esm.min.js';
  import { createChart } from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/modules/charts.esm.min.js';

  const lattice = createLatticeAction({ createGrid });

  let chartEl;

  const config = {
    rowKey: 'id',
    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' },
    ],
    rows,  // an array of circuit records
    // onGrid hands over the live grid the moment it is created. Chart events
    // arrive with a flat payload; here click, hover and legend are each logged.
    onGrid: (grid) => {
      const chart = createChart({ grid, container: chartEl, type: 'pie', x: 'status', y: 'charge' });
      chart.on('click',  (e) => console.log('click',  e.category, e.value));
      chart.on('hover',  (e) => console.log('hover',  e.category));
      chart.on('legend', (e) => console.log('legend', e.label, e.hidden));
    },
  };
</script>

<svelte:head>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.27.0/lattice-grid.min.css">
</svelte:head>

<div bind:this={chartEl} style="height: 260px"></div>
<div use:lattice={config} style="height: 340px; margin-top: 14px"></div>