Legend items interactions

by Anton

HTML

<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<script src="https://cdn.amcharts.com/lib/4/themes/animated.js"></script>
<div id="chartdiv"></div>

CSS

#chartdiv {
  width: 100%;
  height: 300px;
}

JavaScript

var chart = am4core.create("chartdiv", am4charts.XYChart);

chart.data = [{
  "country": "USA",
  "visits": 3025,
}, {
  "country": "China",
  "visits": 1882,
}, {
  "country": "Japan",
  "visits": 1809,
}];

// Create axes
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = "country";
categoryAxis.renderer.grid.template.location = 0;
categoryAxis.renderer.minGridDistance = 60;
categoryAxis.tooltip.disabled = true;

var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
valueAxis.renderer.minWidth = 50;
valueAxis.min = 0;
valueAxis.cursorTooltipEnabled = false;

// Create series
var series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "visits";
series.dataFields.categoryX = "country";
series.name = "Country";

chart.legend = new am4charts.Legend();

// Making legend labels NOT toggle series, but output console message
// Only legend bullets should toggle series.
// See https://github.com/amcharts/amcharts4/issues/782

// 1. Disable default toggle behavior for the whole container
chart.legend.itemContainers.template.clickable = false;
chart.legend.itemContainers.template.focusable = false;

// 2. Custom logic on label
chart.legend.labels.template.interactionsEnabled = true;
chart.legend.labels.template.events.on('hit', e => {
    console.log('Legend label hit');
});

//series.events.on('shown', () => console.log('shown'));
//series.events.on('hidden', () => console.log('hidden'));

// 3. Toggle series on marker
chart.legend.markers.template.interactionsEnabled = true;
chart.legend.markers.template.events.on('hit', e => {
		const series = e.target.parent.dataItem.dataContext;
    console.log('marker hit', series.isHidden);
    series.isHidden ? series.show() : series.hide();
});