in src/barChart.ts [475:486]
private handleContextMenu() {
this.svg.on('contextmenu', () => {
const mouseEvent: MouseEvent = getEvent();
const eventTarget: EventTarget = mouseEvent.target;
let dataPoint: any = d3Select(<d3.BaseType>eventTarget).datum();
this.selectionManager.showContextMenu(dataPoint ? dataPoint.selectionId : {}, {
x: mouseEvent.clientX,
y: mouseEvent.clientY
});
mouseEvent.preventDefault();
});
}