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toolbar command enablement [message #551603]

Sat, 07 August 2010 18:31

Eclipse User

Hi,

I have a Command (the class extends AbstractHandler) where I overrided
the isEnabled-Method. It checks some specific things about the selection
of the user and returns true or false accordingly.
Now I want the toolbar to show the command. So I used the
menuContribution extension and a a command extension. The problem is
that the isEnabled method is only called ones but not another time if
the user selects other elements in a view.
I've also used the visibleWhen extension (with checkEnabled=true) but it
doesn't work.
What can I do that the isEnabled-method is being called when the user
selects elements in the view?

Thanks a lot.

Re: toolbar command enablement [message #551697 is a reply to message #551603]

Mon, 09 August 2010 04:27

Eclipse User

The isEnabled Method will only be called if the menu entry is created. Thats why that method works for menus like popup or main menus, but not for toolbars.

If you want to disable the toolbar button, you have to add an "enabledWhen" condition on your handler. Maybe the declarative expressions are enough for you, if you have to do some specific checks, i.e. check a right or something else which you can only do programmatically, you have to write either a propertyTester or a sourceProvider.

Greetz
Thomas

[Updated on: Mon, 09 August 2010 04:29] by Moderator

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