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Enable/Disable a Menu Element in a Processor [message #756495]

Mon, 14 November 2011 02:42

St Clair Clarke

Messages: 118
Registered: March 2010

Senior Member

Hello,

I am learning how to use an E4AP Processor with the two tutorials:
1. http://www.vogella.de/articles/EclipseE4/article.html#contribute_processors
2. http://www.toedter.com/blog/?p=154

I have an Admin menu command that I would like to enable/disable if someone logs onto the database, but IS NOT authenticated as an admin role.

I know how to make the Admin command label visible/invisible, BUT I would rather disable/enable it instead.

There is no such mechanism in any of the *Element classes I have seen in E4AP.

How can I do this?

If such a enable/disable and element does not exist, would it be possible for the team to implement one?

Thanks

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Re: Enable/Disable a Menu Element in a Processor [message #756640 is a reply to message #756495]

Mon, 14 November 2011 14:49

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

Your handler should implement a @CanExecute method that could check if the user is logged in and has the admin role. You would probably want to have that information cached in a manager, so the @CanExecute check is quick and the manager deals with the database.

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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