Hey,
Thats a problem we are aware of. In the end, it comes down to the fact that we
can not control which handler are included and which are not. If it would be
possible to exclude the qx drag & drop handler, it would be easy for you to
register your custom one instead of the qx one. Thats what were working on, so
you might see some changes to that in the upcoming release as well.
Regards,
Martin
Am 17.01.2012 um 18:35 schrieb John Spackman:
Hi,
I want to be able to customise the Drag & Drop behaviour in Qx so that I can
adjust how & when events are fired and pick up on Drag & Drop globally but
there's isn't an API to allow it. Even though event handlers are developed as
individual modules and "registered" they cannot be replaced with any other
implementation, which seems like an unfortunate restriction – effectively
handlers are global per window.
I've hacked around this by changing the classname of my replacement class and
tricking qx.event.Manager to cache my class instance instead of the real one
but obviously it's not a "recommended" approach, it will only work on the
specified window instance, and I'm concerned that changes to the Qx framework
could break it in the future.
This is the code:
myapp.MyDragDropHandler.classname = qx.event.handler.DragDrop.classname;
var handler =
Registration.getManager(window).getHandler(myapp.MyDragDropHandler);
qx.core.Assert.assertTrue(handler.constructor === myapp.MyDragDropHandler,
"Cannot install");
Can this be changed? EG add a generic way to replace event handlers?
John
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