On drag events

[GermainBergeron]

fixes #1366

[borisnadion]

any insights when this will be merged?

[aendra-rininsland]

It doesn't seem like there's much interest in either this or #1366. If you provide a better use case and/or there's more appetite for it, I'll reopen.

Closing for now.

[unstephenk]

Would love to have this feature. Please let us know how to use it.

[unstephenk]

Please Merge.

[IceCreamYou]

It appears this code used to be part of the library but was removed in #215. Here is a workaround:

// Override C3's dragend function so we can do something when the user is done selecting multiple points or dragging to zoom
const dragend = c3.chart.internal.fn.dragend;
c3.chart.internal.fn.dragend = function() {
    dragend.apply(this, arguments);
    // Do whatever you want to do on dragend here
};