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Re: visibleWhen of a menuContribution based on view selection [message #667624]

Sat, 30 April 2011 00:32

Eclipse User

On 4/30/2011 12:09 AM, markusbischof82@gmail.com wrote:
> Hi all!
>
> I've searched the forum but did not find a feasible solution for my
> problem.
> I'm defining a menuContribution to a view toolbar. I've added a
> visibleWhen element and used a with(var=selection) element. This works
> fine when I change the selection in the view, but also let's the
> menuContribution disappear when the view looses it's focus.
> Is there a way to say: I want the contribution to be visible when the
> selection in view A is an instanceof class B...
>
> Any help is appreciated!
>
> Markus

This question should be asked in the Platform forum, copying there.

Re: visibleWhen of a menuContribution based on view selection [message #667776 is a reply to message #667624]

Mon, 02 May 2011 03:45

Eclipse User

Hi!

Sorry, we do a lot of JDT-things so I was focused on the JDT forum! Smile

So, can anyone give me a hint how to define the following statement through a visibleWhen-expression:

The menuContribution with locationURI 'toolbar:VIEWID?after=addtions" with the command COMMANDID should be visible, when the selection in view VIEWID is of type CLASS.

Markus

[Updated on: Mon, 02 May 2011 03:57] by Moderator

Re: visibleWhen of a menuContribution based on view selection [message #667851 is a reply to message #667776]

Mon, 02 May 2011 08:46

Eclipse User

The application state in eclipse in 3.x is global, which means if you
are looking at the selection, you'll see the selection of the active
part (which most of the time will not be your class B).

A slightly less confusing option would be to make your tool item always
visible and tie its enabled state to your view selection.

The other alternative is to write a property tester that tracks down
your view and asks for its selection:

<visibleWhen>
<test property="com.example.testViewSelection"/>
</visibleWhen>

And allow that your property applies to java.lang.Object. See my sig
for some links, and the org.eclipse.core.expressions.propertyTesters
extension point description. From the property tester method, you can
use any number of API to get the active IWorkbenchPage, and find your
view to check its selection directly.

PW

--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Platform_Expression_Framework
http://wiki.eclipse.org/Menu_Contributions
http://wiki.eclipse.org/Menus_Extension_Mapping
http://help.eclipse.org/helios/index.jsp?topic=/org.eclipse. platform.doc.isv/guide/workbench.htm

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