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menu/toolbar items based on open editor [message #326767]

Tue, 01 April 2008 00:23

Eclipse User

I've tried using org.eclipse.ui.menus extension point, but struggling since
this is newer than any books I have.

First issue - I have a menu and toolbar buttons that I only want to be
displayed when certain editors are chosen. How would I control that?

Once those options conditionally appear, I want them disabled until focus is
on certain widgets. How would I control that?

My actions will change the data in the widget with focus. How do I get to
the widget to contol it?

Re: menu/toolbar items based on open editor [message #326798 is a reply to message #326767]

Tue, 01 April 2008 10:14

Eclipse User

Jay Simpson wrote:
> First issue - I have a menu and toolbar buttons that I only want to be
> displayed when certain editors are chosen. How would I control that?

You want a visibleWhen element, similar in content to this example:
http://wiki.eclipse.org/Command_Core_Expressions#Active_edit or_type

>
> Once those options conditionally appear, I want them disabled until focus is
> on certain widgets. How would I control that?

You can declaratively work through the enabledWhen core expression
(although it seems to me you would have to use a property tester).

The other alternative is to activate you handler in your
createPartControl(*). That way it would have access to all of your
editors widgets and you could update your enabled State (and fire the
appropriate HandlerChangeEvent) to make it enabled/disabled.

>
> My actions will change the data in the widget with focus. How do I get to
> the widget to contol it?

With code? You created the widget, didn't you? What are you asking to
control what, exactly?

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

Re: menu/toolbar items based on open editor [message #326810 is a reply to message #326798]

Tue, 01 April 2008 11:20

Eclipse User

One problem I had was I had the enabledWhen on the command and not the
handler...

Is there a way to know what page of a multi-page editor is active, and not
which editor is active? I want to make visible the toolbar only when a
certain page is selected, and that page might belong to several editors.

"Paul Webster" <pwebster@ca.ibm.com> wrote in message
news:fstfmd$fh2$1@build.eclipse.org...
> Jay Simpson wrote:
>> First issue - I have a menu and toolbar buttons that I only want to be
>> displayed when certain editors are chosen. How would I control that?
>
> You want a visibleWhen element, similar in content to this example:
> http://wiki.eclipse.org/Command_Core_Expressions#Active_edit or_type
>
>
>>
>> Once those options conditionally appear, I want them disabled until focus
>> is on certain widgets. How would I control that?
>
> You can declaratively work through the enabledWhen core expression
> (although it seems to me you would have to use a property tester).
>
> The other alternative is to activate you handler in your
> createPartControl(*). That way it would have access to all of your
> editors widgets and you could update your enabled State (and fire the
> appropriate HandlerChangeEvent) to make it enabled/disabled.
>
>>
>> My actions will change the data in the widget with focus. How do I get
>> to the widget to contol it?
>
> With code? You created the widget, didn't you? What are you asking to
> control what, exactly?
>
> 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
>

Re: menu/toolbar items based on open editor [message #326828 is a reply to message #326810]

Tue, 01 April 2008 14:16

Eclipse User

Jay Simpson wrote:
> One problem I had was I had the enabledWhen on the command and not the
> handler...
>
> Is there a way to know what page of a multi-page editor is active, and not
> which editor is active? I want to make visible the toolbar only when a
> certain page is selected, and that page might belong to several editors.

You could write your own property tester for activeEditor (IEditorPart)
.... if you find your multi-page editor part, you can check your information.

But you need to request the IEvaluationService update that property
tester property when your MPEP changes pages (re-evaluation available in
3.4M6)

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

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