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Enable/Disable plugin.xml generated menus [message #336638]

Thu, 25 June 2009 16:32

Javier Der Derian

Messages: 2
Registered: July 2009

Junior Member

Hi!

This is my first email to this list.
I'm working on qbzr-eclipse, a plugin to integrate qbzr [
http://bazaar-vcs.org/QBzr ] with eclipse.

Right now I'm working on refectoring the main qbzr-eclipse menu, which
used to be just a long plain menu. Now it's divided in submenus.
What I need to do now is to enable/disable some menuitems according to one
simple variable: the selected project is versioned in bazaar [
http://bazaar-vcs.org/ ] or not.

I've tried like 20 ways of doing this...but I can't find a way to actually
access the menuitem from inside the plugin's code. None of the examples I
found on the web helped me =(

ANY input on how to do this would be great, I have no problem on
refactoring the code I've already written.

Thanks!

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Re: Enable/Disable plugin.xml generated menus [message #336640 is a reply to message #336638]

Thu, 25 June 2009 18:27

Eclipse User

Originally posted by: christopher.oezbek.fu-berlin.de

Hi Javier,

> What I need to do now is to enable/disable some menuitems according to
> one simple variable: the selected project is versioned in bazaar [
> http://bazaar-vcs.org/ ] or not.
>
> I've tried like 20 ways of doing this...but I can't find a way to
> actually access the menuitem from inside the plugin's code.

How about doing it the other way around: In the associated action of the
menuitem you set the action to enabled/disabled.

For instance we have a action directly in the popup menu for IResources

<extension
point="org.eclipse.ui.popupMenus">
<objectContribution
adaptable="true"
id="de.fu_berlin.inf.dpp.ui.popupmenu"
objectClass="org.eclipse.core.resources.IResource">
....
<action
class="de.fu_berlin.inf.dpp.ui.actions.NewSessionAction"
icon="icons/transmit.png"
id="Saros.action1"
label="Share project...">
</action>

In the NewSessionAction, we then enable/disable based on the selection:

public class NewSessionAction implements IObjectActionDelegate {
....
public void selectionChanged(IAction action, ISelection selection) {
// Set to enabled if not already in a session
action.setEnabled(getProject(selection) == null);
}
....

Hope this helps,
Christopher

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Re: Enable/Disable plugin.xml generated menus [message #336643 is a reply to message #336640]

Thu, 25 June 2009 19:57

Javier Der Derian

Messages: 2
Registered: July 2009

Junior Member

> Hi Javier,
Hi!
>> What I need to do now is to enable/disable some menuitems according to
>> one simple variable: the selected project is versioned in bazaar [
>> http://bazaar-vcs.org/ ] or not.
>>
>> I've tried like 20 ways of doing this...but I can't find a way to
>> actually access the menuitem from inside the plugin's code.

> How about doing it the other way around: In the associated action of the
> menuitem you set the action to enabled/disabled.

> For instance we have a action directly in the popup menu for IResources

> <extension
> point="org.eclipse.ui.popupMenus">
> <objectContribution
> adaptable="true"
> id="de.fu_berlin.inf.dpp.ui.popupmenu"
> objectClass="org.eclipse.core.resources.IResource">
> ....
> <action
> class="de.fu_berlin.inf.dpp.ui.actions.NewSessionAction"
> icon="icons/transmit.png"
> id="Saros.action1"
> label="Share project...">
> </action>

> In the NewSessionAction, we then enable/disable based on the selection:

> public class NewSessionAction implements IObjectActionDelegate {
> ....
> public void selectionChanged(IAction action, ISelection selection) {
> // Set to enabled if not already in a session
> action.setEnabled(getProject(selection) == null);
> }
> ....

> Hope this helps,
> Christopher

That sounds like a very simple solution.
My "problem" is that i'm actually using commands and handlers, not actions.
IE:
<handler
class="org.bazaar_vcs.qbzr_eclipse.handlers.InitCommandHandler "
commandId="qbzr_eclipse.commands.initCommand">
</handler>
is the handler
and then

<command
commandId="qbzr_eclipse.commands.initCommand"
icon="icons/init.png"
id="qbzr_eclipse.menus.initCommand"
mnemonic="I"
>

Is the command.

Any Idea how to move forward from here?

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Re: Enable/Disable plugin.xml generated menus [message #336648 is a reply to message #336643]

Fri, 26 June 2009 05:08

Prakash G.R.

Messages: 621
Registered: July 2009

Senior Member

Javier Der Derian wrote:

> My "problem" is that i'm actually using commands and handlers, not actions.

Good, then you can use the activeWhen of the handlers. When there are
no active handlers, then the command will be disabled.

See: http://wiki.eclipse.org/Platform_Command_Framework

- Prakash
---
http://blog.eclipse-tips.com

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