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| Re: [ZEST] Disable node replacing [message #248301 is a reply to message #248231] |
Tue, 14 April 2009 04:02  |
Eclipse User |
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Originally posted by: simone.simonesaraceni.it
Ian Bull ha scritto:
> Simone wrote:
>> Hi, is it possible to disable user replacing nodes on Zest graph? How?
> It might be possible by overriding the GraphNode class and replacing the
> setLocation methods, but I'm not sure if all the necessary hooks are
> visible. Can you try this, and file a bug, and I can investigate
> opening the needed hooks.
>
> cheers,
> ian
Hi,
I've solved extending the Graph class and on constructor I've changed
the EventDispatcher:
//Disable node moving
getLightweightSystem().setEventDispatcher(new SWTEventDispatcher() {
public void dispatchMouseMoved(org.eclipse.swt.events.MouseEvent me) {
// If the current event is null, return
if (getCurrentEvent() == null) {
return;
}
if (getMouseTarget() == null) {
setMouseTarget(getRoot());
}
if ((me.stateMask & SWT.BUTTON_MASK) != 0) {
getMouseTarget().handleMouseDragged( getCurrentEvent());
} else {
getMouseTarget().handleMouseMoved( getCurrentEvent());
}
}
});
I take this code from the source code of Graph and remove the call to
dispachMouseMoved(MouseEvent) method.
I use this solution because is the simpliest that I've found.
Simone.
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