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ActiveEditorId Expression [message #331920]

Mon, 29 September 2008 14:03

Richard Craddock

Messages: 31
Registered: July 2009

Member

Hi,

I am trying to use expressions to enable/disable (ie set visible/not
visible) menu entries when certain conditions are met. Basically we have a
"profile" which is a bit like a set of preferences and allows users to
turn off certain behaviours.

I have created my own PropertyTester, but I am having a bit of trouble.

The configuration for the propertyTester requires a "type" which I have
set to ...IResource. This works fine when the current selection is an item
in the explorer - although I never use the actual resource.

When the user opens an editor however the propertyTester no longer works.
In fact everything then gets "false" and all of the menu/toolbar items
using this propertyTester disappear!

How can I set up a propertyTester to be used irrespective of the current
selection/ active Editor ?

(At least I think that's the right question !!!!)

Thanks,

Richard

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Re: ActiveEditorId Expression [message #332011 is a reply to message #331920]

Wed, 01 October 2008 13:45

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

Richard Craddock wrote:
> Hi,
>
> I am trying to use expressions to enable/disable (ie set visible/not
> visible) menu entries when certain conditions are met. Basically we have
> a "profile" which is a bit like a set of preferences and allows users to
> turn off certain behaviours.
>
> I have created my own PropertyTester, but I am having a bit of trouble.

Well, the type you pick depends on what menus you wish your contribution
to appear in. Where do you want them? Do you really care about the
current selection, or you expect them to appear in every popup
(controlled by the profile)?

If the second is true, 2 potential solutions are 1) tie your PT to
java.lang.Object, although I don't really recommend this or 2) tie your
PT to org.eclipse.ui.IWorkbenchPart and use it like:

<visibleWhen>
<with variable="activePart">
<test ...whatever.../>
</with>
</visibleWhen>
[/xml]

Later,
PW

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

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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