Eclipse Community Forums: Eclipse Platform » Menu visible when selection is a subclass of StructuredSelection

Home » Eclipse Projects » Eclipse Platform » Menu visible when selection is a subclass of StructuredSelection(visibleWhen on subtypes of StructuredSelection)

Menu visible when selection is a subclass of StructuredSelection [message #546977]

Wed, 14 July 2010 15:34

Eclipse User

I have a class: MyStructuredSelection (extends StructuredSelection).

Under certain circumstances I set the selection as an instance of MyStructuredSelection using:

getSite.getSelectionProvider.setSelection(new MyStructuredSelection(...))

I would like to have certain menu contributions visible only when the selection is an instance of MyStructuredSelection.

Is there a way to do set menu visibility based on the type of the selection?

Thank you
Mark Lovell

Re: Menu visible when selection is a subclass of StructuredSelection [message #547069 is a reply to message #546977]

Thu, 15 July 2010 08:12

Eclipse User

Do you mean org.eclipse.ui.menus/menuContributions? visibleWhen (core
expressions) supports <instanceof />

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/galileo/index.jsp?topic=/org.eclipse .platform.doc.isv/guide/workbench.htm

Re: Menu visible when selection is a subclass of StructuredSelection [message #547129 is a reply to message #547069]

Thu, 15 July 2010 11:58

Eclipse User

Thank you for replying.

Yes I am using org.eclipse.ui.menus/menuContributions.

The visibleWhen processes the objects in the selection's list (selection.toList()) not the selection object (ISelection) itself.

Therefore "instanceof" acts on the objects within the selection's list.

I am hoping to find a way to set a menu's visbility based on the type of the selection (ex MyStructuredSelection extends StructuredSelection) regardless of the objects it contains.

Thoughts?

Re: Menu visible when selection is a subclass of StructuredSelection [message #547158 is a reply to message #547129]

Thu, 15 July 2010 13:29

Eclipse User

mark.lovell@cae.com wrote:

> The visibleWhen processes the objects in the selection's list
> (selection.toList()) not the selection object (ISelection) itself.
> Therefore "instanceof" acts on the objects within the selection's list.

use <variable with="selection"... or <variable
with="activeMenuSelection" as appropriate.

The default variable for visibleWhen is a Collection with the contents
of the selection.

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/galileo/index.jsp?topic=/org.eclipse .platform.doc.isv/guide/workbench.htm

Re: Menu visible when selection is a subclass of StructuredSelection [message #547161 is a reply to message #547158]

Thu, 15 July 2010 14:05

Eclipse User

variable with="selection"... works perfectly.

Thank you very much
Very Happy

Previous Topic:	Lauch Configuration
Next Topic:	The project was not built since the source file ... could not be read

Goto Forum:

-=] Back to Top [=-

Current Time: Wed Jul 23 04:07:09 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter