[news.eclipse.platform] Re: Contribute both a command Id plus an action

[Paul Webster <pwebster@xxxxxxxxxx>]

Gary E. Barnes wrote:
> I'm using 3.2.  There doesn't appear to be a HandlerUtil in 3.2.  So I'm 
> doing,

OK, in 3.2 you're using the best code, although you can actually use 
ISources.ACTIVE_PART_NAME instead of the string literal.

> > You can also simply supply a default handler in your command 
> > definition (but you can only supply one).
>
> Does that work in 3.2?  It is documented in the 3.2 Help files but if I 
> specify a default  handler it never gets invoked.  Never even gets 
> constructed (I put a breakpoint in the constructor).

It should work, but maybe that's a bug in 3.2 ... a number of bugs with 
commands, handlers, and menus were fixed in 3.3, and even more in 3.4M4 
(M5 will be coming out in 3 weeks or so).


> With the activeWhen commented out the handler is never invoked.  With 
> the activeWhen not commented out then the handler is invoked.
>
> Is there perhaps a way to specify an activeWhen expression that is 
> simply a constant TRUE literal?  Looking at the documentation there 
> doesn't seem to be a way.

Your syntax looks correct, it must be a bug in 3.2.  If you can write a 
property tester in 3.2(depend on org.eclipse.core.expressions plugin) 
that extends PropertyTester then you can just return TRUE all the time.

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/help33/index.jsp?topic=/org.eclipse.platform.doc.isv/guide/workbench.htm