[news.eclipse.modeling.gmf] Re: swither for a diagram

[Jan Herriger <jan.herriger@xxxxxx>]

Hi Alexey,

I assume, this action modifies the notational model? DiagramEditPart 
listens to these changes. You should be able to catch corresponding 
events inside #handleNotificationEvent and update diagram contents.

Alexey Semenov schrieb:
> Hi Jan,
>
> Thanks for the reply.
>
> I've done a little investigation and it seems that GMF provides utility 
> classes for this kind of extension. I added this code to plugin.xml and 
> this added a button to the diagram's toolbar.
>
>     <extension id="presentationContributionItemProvider" 
> name="%ext.presentationContributionItemProvider" 
> point="org.eclipse.gmf.runtime.common.ui.services.action.contributionItemProviders"> 
>
>         <contributionItemProvider 
> class="org.spbu.pldoctoolkit.graph.diagram.infproduct.providers.SwitchFIPContributionItemProvider" 
> checkPluginLoaded="false">
>             <Priority name="Lowest">
>             </Priority>
>             <partContribution 
> class="org.eclipse.gmf.runtime.diagram.ui.parts.IDiagramWorkbenchPart">
>                 <partMenuGroup toolbarPath="/" id="toolbarTestGroup">
>                 </partMenuGroup>
>                 <partAction toolbarPath="/toolbarTestGroup" 
> id="switchPresentationAction">
>                 </partAction>
>             </partContribution>
>         </contributionItemProvider>
>     </extension>
>
> What I need now is to wire the event from the button with an appearance 
> change on the diagram.
>
> My current idea is to find the current active DiagramEditor and call a 
> method there, which will cause the diagram to re-paint itself. The 
> canonical edit policy of the diagram will then update its data.
>
> Is it a correct idea? :)
>
> Thanks,
> Alexey
>
>
> On Mon, 02 Jun 2008 14:08:22 +0400, Jan Herriger <jan.herriger@xxxxxx> 
> wrote:
>
> > Hi Alexey,
> >
> > I don't know exactly what you want to achieve. But it sounds 
> > reasonable to me, to create an IEditorActionDelegate. Add this action 
> > to menu/toolbar with org.eclipse.ui.editorActions extension point (or 
> > org.eclipse.ui.menus, if you like).
> >
> > Alexey Semenov schrieb:
> > > Hi All,
> > >  I need to implement a switcher related to the diagram. It should 
> > > have a pre-defined set of values based on external information, and 
> > > switch diagram's editing mode and colouring.
> > >  The question is, how do I implement such a switcher. Generally 
> > > speaking, I see 3 options:
> > >  (1) insert it into the palette, as a column of buttons below the 
> > > tools' buttons;
> > > (2) implement a tabs group for the diagram;
> > > (3) have it separately somewhere in Eclipse toolbars.
> > >  I've tried (1) and it looks very non-standard, so uneasy. So does 
> > > (2). I haven't investigated option (3) yet.
> > >  Could anyone please advise me the quickest method and probably point 
> > > me somewhere in the docs/examples if my need has already been 
> > > addressed and solved? Or at least say I'm a freaking geek and will 
> > > have to solve my geeky problems on my own
> > >  Many thanks,
> > > Alexey