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switching perspective doesn't seem to restore selection variable in Eclipse 3.5 [message #480052]

Thu, 13 August 2009 15:04

Philippe Marschall

Messages: 121
Registered: July 2009

Senior Member

Hi

We are having a strange issue with an enabledWhen of a handler that
works in Eclipse 3.4.2 and doesn't in 3.5.

We have identified the following steps to reproduce it:
- Select an element in view 1 in perspective 1.
- This view has a command with a handler with an enabledWhen that
references the "selection" variable. The enabledWhen checks that only
one element of an expected type is selected. The handler is enabled.
- Switch to perspective 2 and select an element in view 2.
- Switch back to perspective 1.
- The element of view 1 and the view itself are still "visually"
selected (blue background) but the handler is not enabled. Some
debugging seems to suggest that the "selection" source variable is empty.
- If the RCP application loses and gains the focus the handler is
enabled again. The same is true if a different view is selected and view
1 is selected again.

Unfortunately we have not yet been able to come up with a minimal piece
of code that demonstrates the bug. Are you aware of any changes in this
area between Eclipse 3.4.2 and 3.5 or do you have any debugging tips?

Cheers
Philippe

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Re: switching perspective doesn't seem to restore selection variable in Eclipse 3.5 [message #480054 is a reply to message #480052]

Thu, 13 August 2009 15:28

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

This might be related to https://bugs.eclipse.org/bugs/show_bug.cgi?id=277926 where the source provider is updating its internal state but not firing the correct events.

PW

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

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Re: switching perspective doesn't seem to restore selection variable in Eclipse 3.5 [message #480221 is a reply to message #480054]

Fri, 14 August 2009 12:14

Philippe Marschall

Messages: 121
Registered: July 2009

Senior Member

Paul Webster wrote:
> This might be related to
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=277926 where the source
> provider is updating its internal state but not firing the correct events.

I tried M20090812-0800 and the problem is still there.

Cheers
Philippe

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Re: switching perspective doesn't seem to restore selection variable in Eclipse 3.5 [message #480256 is a reply to message #480221]

Fri, 14 August 2009 15:00

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

Hi Philippe,

I would enter a bug at https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Platform &component=UI

There is a template to create a plugin with a sample view. If you could include XML in the bug report that reproduces the problem for you (where your view1 is the Sample View) there might be a chance for us to fix this in 3.5.1

PW

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions

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