Legend Select and Hide Not Working in Partition Chart

[mageshsankar]

Legend Select and Hide Not Working in Partition Chart

Description:

When using the @elastic/charts library, I encountered an issue where the legend select and hide functionality is not working correctly in a partition chart. Specifically, the legend items are displayed, but clicking on them does not hide or show the corresponding segments in the chart.

Steps to Reproduce:

Create a partition chart using the @elastic/charts library.
Add a legend to the chart using the Settings component.
Observe that clicking on legend items does not affect the visibility of chart segments.
Expected Behavior:
Clicking on a legend item should toggle the visibility of the corresponding segment in the partition chart.

Actual Behavior:
Clicking on a legend item does nothing; the chart segments remain visible regardless of the legend item state.

Code Example:

`import React from "react";
import { Chart, Partition, Settings } from "@elastic/charts";

export default function App() {
  return (
    <div className="App">
      <Chart size={["100%", 500]}>
        <Settings
          showLegend
          legendSort={(...args) => {
            console.log(args);
            return 0;
          }}
        />
        <Partition
          id="spec_1"
          data={[
            { cat1: "A", cat2: "A", val: 1 },
            { cat1: "A", cat2: "B", val: 1 },
            { cat1: "B", cat2: "A", val: 1 },
            { cat1: "B", cat2: "B", val: 1 },
            { cat1: "C", cat2: "A", val: 1 },
            { cat1: "C", cat2: "B", val: 1 }
          ]}
          valueAccessor={(d) => d.val}
          layers={[
            {
              groupByRollup: (d: { cat1: string; cat2: string; val: number }) =>
                d.cat1
            }
          ]}
        />
      </Chart>
    </div>
  );
}`

Environment Details

Kibana Version: 8.12.0
Elastic Charts Version: As included in Kibana 8.12.0
Browser: All supported browsers
OS: Linux

Current Screenshot :

Expected Screenshot

[mageshsankar]

@nickofthyme Can you look into this

[nickofthyme]

@mageshsankar This has not been supported since the Partition spec was added year ago. I agree it is strange to have a different legend behavior between chart types.

I will see if this is a quick feature to add given most of the necessary logic is in place from the other chart types.