How to get the index of the clicked point?

[mjperez-usgs]

I am trying to make this plugin perform an action when the user clicks on a point in the boxplot. I set some extra metadata on the dataset that I am trying to retrieve in the onclick handler. I do this in a scatter plot in a different chart, which works for me but I also want it to work on my boxplot version.

An example that I've been working on, but haven't yet got to work:

       this.chart.options.onClick = (event, elements, chart) => {
            if (this.monitoringMap != null && this.lastHoveredPoint != null)  {
          
                const activePoints = chart.getElementsAtEventForMode(event, 'nearest', { intersect: true }, true);
                if (activePoints.length > 0) {
                    const firstClickedPoint = activePoints[0];
                    if (firstClickedPoint.datasetIndex === 0 || firstClickedPoint.datasetIndex === 1) {
                        let dataset = chart.data.datasets[firstClickedPoint.datasetIndex].data[firstClickedPoint.index];
                        // How do I access the index of items/outliers here?

                        
                        this.monitoringMap.zoomToPoint(this.lastHoveredPoint.objectid, this.lastHoveredPoint.type, true, true);
                    }
                }
            }
        };
    }

Currently I am trying to track the last hovered index from when the tooltip pops up (which is demonstrated #17). This information doesn't appear to be surfaced in the onclick handler though which I imagine will lead to issues where the last hovered item might not actually be what you click on, so I'm trying to figure out how to do that. I only get the dataset index and the data index, but I need to know one further index into items/outliers, but I don't see any way to do that.

I have item and outlier radius turned on - it works just fine right now in my tooltips.

Context

• Version: 4.4.5
• Browser: MS Edge 146

Additional context