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Enabling/Disabling Interdependant Actions [message #461191]

Sat, 06 January 2007 10:54

Frederic Conrotte

Messages: 125
Registered: July 2009

Senior Member

Hello,

I've got an RCP application connecting to a JBoss server.

I want to create 2 simple actions: login and logoff.

After creating those 2 actions in the ActionBarAdvisor, I want them to be dependant on some "isLogged()" plugin method, so that I can use the Action.setEnabled(boolean)" method.

If I'm logged in, the "login" action is disabled, the "logoff" action is enabled.
If I'm logged off, the "login" action is enabled, the "logoff" action is disabled.

What's your best way to implement this?

1- Observing a system property?
2- Each action to implement IPropertyListener?
3- Some other way???

The problem is that thru the RCP registry I haven't found any way to access actions after having created them in ActionBarAdvisor.

Something like PlatformUI.getActionSet().getAction(ID) ?

I've looking for such solutions in doc, tutorials and forums but didn't found any clue.

Thanks

Fred

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Re: Enabling/Disabling Interdependant Actions [message #461208 is a reply to message #461191]

Sat, 06 January 2007 19:42

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

Based on the way actions are done, when you create each action I would
get it to listen to something that generates an event (even a
PropertyChangeEvent for the "loggedIn" property would be fine).

Then call setEnabled(*) based on the property.

Later,
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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Re: Enabling/Disabling Interdependant Actions [message #461238 is a reply to message #461208]

Sun, 07 January 2007 18:22

Frederic Conrotte

Messages: 125
Registered: July 2009

Senior Member

Hi,

I've indeed found a good example of the method you describe in the Paperdog project:
http://sourceforge.net/projects/paperdog/

see de.imedic.paperdog.client.internal.core.DogClient.firePostPr opertyChange()
de.imedic.paperdog.client.ui.actions.WorkbenchActionEnabler( )
and de.imedic.paperdog.client.ui.actions.LogoutAction => enabler field

Thanks for your support!

Fred

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