Does not work with Leaflet 1.10

[hrishiballal]

This plugin does not work with Leaflet 1.10

There are two main issues:

• The L.Mixin.Events is deprecated so L.Evented needs to be used.
• Also when using a custom callback function for ButtonOK, there are callback errors.

[hrishiballal]

The fix is to include
includes: L.Evented.prototype,
instead of L.Mixin.Events here

[pegel]

hrishiballal's fix solves the deprecation issue, but not the type error.

It looks like L.DomEvent.off previously returned L.DomEvent but no longer does so. The fix is to write out the code at line 102 explicitly:

L.DomEvent.off(this._wrapper, 'contextmenu', stop);
L.DomEvent.off(this._wrapper, 'click', stop);
L.DomEvent.off(this._wrapper, 'mousedown', stop);
L.DomEvent.off(this._wrapper, 'touchstart', stop);
L.DomEvent.off(this._wrapper, 'dblclick', stop);
L.DomEvent.off(this._wrapper, 'mousewheel', stop);
L.DomEvent.off(this._wrapper, 'MozMousePixelScroll', stop);

[COLABORATI]

If this fix is ok, would you please like to merge that so that we can use it with newer versions of leaflet? Thank you!