dnd: replace evt.stop with evt.preventDefault in Selector.onMouseDown

[Simon Speich]

dnd.Selector.onMouseDown() calls event.stop(e) on line 268/196 (to prevent the browser from selecting text when the user drags?).

But this prevents using the event mousedown higher up in the DOM hierarchy (e.g. event delegation) and should therefore be replaced with event.preventDefault() instead, which does not cancel the bubbling up. Also see fixed ticket #13994.

[bill]

#16805 is a duplicate of this ticket.

[Simon Speich]

Workaround:

define([
	'dojo/_base/declare',
	'dojo/on',
	'dojo/dnd/Selector'
], function(declare, on, Selector) {

	return declare([Selector], {

		onMouseDown: function(evt) {
			// onMouseDown calls stopPropagation(), which prevents setting context
			// -> add it back with emit()
			this.inherited('onMouseDown', arguments);
			on.emit(evt.target, 'mousedown', {
				bubbles: true,
				cancelable: true
			});
		}
	});
});

and then use map property in dojoConfig:

var dojoConfig = {
	map: {
		'dojo/dnd': {
			'dojo/dnd/Selector': 'yourOwnModule/dnd/Selector'
		}
	}
};

[bill]

#17606 is a duplicate of this ticket.

[dylan]

Ticket planning... move current 1.13 tickets out to 1.15 to make it easier to move tickets into the 1.13 milestone.