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Disposed control causes that popup menu stops working [message #1267922]

Sun, 09 March 2014 20:22

Martin Bayer

Messages: 32
Registered: December 2012

Member

Hi,
today I found something what seems to be quite weird to me.
I created popup menu in my Application model for one of my parts. Menu's ID is cz_martinbayer_e4_analyser_processor_popup_menu.
My implementation provides the adding of my own Controls to the canvas so when I create a Control, I register popup menu for it in the constructor with:

menuService.registerContextMenu(this,'cz_martinbayer_e4_analyser_processor_popup_menu');

When I create few such controls, I'm able to display the popup menu for all of them by right mouse, but when I dispose one of created controls, I'm not able to display popup menu any more for any of the remaining controls.
Do I use it in a bad way or does it look like a bug?
Thanks,

Martin

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Re: Disposed control causes that popup menu stops working [message #1277674 is a reply to message #1267922]

Wed, 26 March 2014 09:55

Eclipse User

This was a bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=375393
Try the latest builds and see if you can reproduce it.

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Re: Disposed control causes that popup menu stops working [message #1279144 is a reply to message #1277674]

Fri, 28 March 2014 09:45

Martin Bayer

Messages: 32
Registered: December 2012

Member

Hi,
I just tried it and still not working. I checked my local MenuManagerRenderer to be sure I'm using fixed version and it contains changes in toBeRenderedUpdater event handler.
I'm sharing more source code for you to explain the situation better. The difference between bug you mentioned and my problem is that in bug, the context menu was registered to the part. I have following situation:
I created new control:

public class CanvasProcessorItem extends Composite
...
public CanvasProcessorItem(Composite parent, int style,
	ProcessorPaletteItem selectedObject, EMenuService menuService,
	IEclipseContext context, int neededImageHeight, int neededImageWidth) {
	super(parent, style | SWT.BORDER);
	...
	initPopupMenu(menuService);
        ...
}
private void initPopupMenu(EMenuService menuService) {
        menuService.registerContextMenu(this,ContextVariables.ITEM_POPUP_MENU_ID);
}

where ContextVariables.ITEM_POPUP_MENU_ID is the identifier for popup menu...
I can see I described my problem completely wrong (because menu is not registered for the part) so I'm really sorry for that...
Thank you and wish you nice day...

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