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MenuItem tooltip timer exception [message #1759987] Thu, 20 April 2017 21:40 Go to next message
Bo Berney is currently offline Bo BerneyFriend
Messages: 12
Registered: July 2009
Junior Member
This worked with Eclipse 3.7, but when we upgraded to 4.5.2, we started getting a NullPointerException in Menu.wmTimer.

The problem is that we have a menu that if you hover over a menu item for a second, we change the MenuItem to a cascade menu with Rename and Delete options. The original non-cascading MenuItem is disposed.

The problem is that a timer is started when a MenuItem is selected so that a tooltip can be popped up after a short delay. The wmTimer method does NOT check selectedMenuItem.isDisposed(), so I get an exception. I don't even know why the timer is even started in the first place when the tooltips are null.

I could not find a way around the above issue, so we basically have to rewrite our whole bookmark/favorite menu functionality.
Re: MenuItem tooltip timer exception [message #1760057 is a reply to message #1759987] Fri, 21 April 2017 14:27 Go to previous messageGo to next message
Brian de Alwis is currently offline Brian de AlwisFriend
Messages: 693
Registered: January 2012
Senior Member

Create a patch and post to swt-dev.

Eclipse Platform committer. Ask me about Eclipse support, training, and consulting.
Re: MenuItem tooltip timer exception [message #1760070 is a reply to message #1760057] Fri, 21 April 2017 17:23 Go to previous message
Bo Berney is currently offline Bo BerneyFriend
Messages: 12
Registered: July 2009
Junior Member
I'll submit a patch when I get time. For now, using reflection to set Menu.selectedMenuItem to null prior to disposing the menu item.
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