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Re: [mdt-uml2tools.dev] Modifying class diagram editor popup menus 
Thanks, Michael, for your detailed response. Through some
experimentation, I also found that I could attach a popup menu item to
all the UML diagram items by simply extending
org.eclipse.ui.popupMenus and using org.eclipse.gef.EditPart as the
objectClass of the objectContribution. This obviated the need for
writing a policy class. I've pasted the relevant fragment from my
plugin.xml below.

Again, thanks for your help.

Ogechi Nnadi.


   <extension
         point="org.eclipse.ui.popupMenus">
      <objectContribution
            id="gmf-practice.objectContribution1"
            objectClass="org.eclipse.gef.EditPart">
         <menu
               id="menu"
               label="labeleroo"
               path="additions">
         </menu>
         <action
               class="gmfpractice.Action1"
               id="gmf-practice.action1"
               label="contained"
               menubarPath="menu">
         </action>
      </objectContribution>
   </extension>

2008/2/14, mdt-uml2tools.dev-request@xxxxxxxxxxx
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> Today's Topics:
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>    1. Modifying class diagram editor popup menus (Ogechi Nnadi)
>    2. Re: Modifying class diagram editor popup menus (Borlander)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 13 Feb 2008 13:10:42 +0900
> From: "Ogechi Nnadi" <ogechi.nnadi@xxxxxxxxxx>
> Subject: [mdt-uml2tools.dev] Modifying class diagram editor popup
>         menus
> To: mdt-uml2tools.dev@xxxxxxxxxxx
> Message-ID:
>         <13690c9c0802122010g4a3e3679u4ecc9632dc15e654@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=UTF-8
>
> Hi,
>
> I'm writing an application that adds a popup menu item to the
> UML2tools class diagram editor so that once you click on the popup
> menu item, it sends the URI (or the name) of the selected object to
> the console. Please tell me what extension point to extend from so
> that I can add the same menu item to the popup menu of all UML
> objects.
>
> In the archives of this list
> (http://dev.eclipse.org/newslists/news.eclipse.modeling.mdt.uml2tools/msg00275.html),
> a similar question was answered but it didn't say what class the
> popupStructuredContributionCriteria should inherit from, and what
> methods needed to be modified.
>
> Thanks,
>
> Ogechi Nnadi.
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 13 Feb 2008 15:05:30 +0100
> From: Borlander <borlander@xxxxxxxxx>
> Subject: Re: [mdt-uml2tools.dev] Modifying class diagram editor popup
>         menus
> To: "MDT UML2 Tools mailing list" <mdt-uml2tools.dev@xxxxxxxxxxx>
> Message-ID:
>         <606be38e0802130605u7db335e8gdbb01c4dc96abe01@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hello,
>
> The structure of the
> org.eclipse.gmf.runtime.common.ui.services.action.contributionItemProviders
> extension point is well defined here:
> http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.gmf.doc/reference/api/runtime/org/eclipse/gmf/runtime/common/ui/services/action/contributionitem/package-summary.html
>
> In your case, you may either use the objectClass="<fqn of selected
> editpart>"' form of this, enumerating the all editpart's classes you
> want to have the popup. In this case there will be a lot of
> <contributionItemProviders> elements in your plugin.xml, with
> objectClass="[oeu2d].clazz.Class2EditPart",
> objectClass="[oeu2d].clazz.Class3EditPart" and so on. This is probably
> boring but this way allow you to modify applicability rules without
> recompilation.
>
> If you want this popup to appear for all and any editparts in the
> class diagram, you have to add approximately 140+ snippets in the
> plugin.xml, so it does not seem to be a practical way.
>
> Thus, I believe that you have to use
> policyClass="<fqn-of-your-brand-new-class-that-implements-policy-interface>"
> way.
> Just write class that implements IPopupMenuContributionPolicy
> interface, and in the only interface method returns true for selection
> from class diagram and false otherwise.
>
> While implementing the policy you have to do something like the code below
>
> public class AllSelectedIsFromClassDiagramPolicy implements
> IPopupMenuContributionPolicy {
>
>         public boolean appliesTo(ISelection selection, IConfigurationElement
> configuration) {
>                 if (false == selection instanceof IStructuredSelection){
>                         return false;
>                 }
>                 IStructuredSelection sSel = (IStructuredSelection)selection;
>                 if (sSel.isEmpty()){
>                         return false;
>                 }
>                 for (Iterator it = sSel.iterator(); it.hasNext();){
>                         Object next = it.next();
>                         if (false == next instanceof IGraphicalEditPart){
>                                 return false;
>                         }
>                         IGraphicalEditPart editPart = (IGraphicalEditPart)next;
>                         if (!isFromClassDiagram(editPart)){
>                                 return false;
>                         }
>                 }
>                 return true;
>         }
>
>         private static boolean isFromClassDiagram(IGraphicalEditPart ep){
>                 View notation = ep.getNotationView();
>                 if (notation == null){
>                         //strange
>                         return false;
>                 }
>                 return PackageEditPart.MODEL_ID.equals(UMLVisualIDRegistry.getModelID(notation));
>         }
>
> }
>
> Hope it helps,
> Regards, ,
> Michael
>
> On Feb 13, 2008 5:10 AM, Ogechi Nnadi <ogechi.nnadi@xxxxxxxxxx> wrote:
> > Hi,
> >
> > I'm writing an application that adds a popup menu item to the
> > UML2tools class diagram editor so that once you click on the popup
> > menu item, it sends the URI (or the name) of the selected object to
> > the console. Please tell me what extension point to extend from so
> > that I can add the same menu item to the popup menu of all UML
> > objects.
> >
> > In the archives of this list
> > (http://dev.eclipse.org/newslists/news.eclipse.modeling.mdt.uml2tools/msg00275.html),
> > a similar question was answered but it didn't say what class the
> > popupStructuredContributionCriteria should inherit from, and what
> > methods needed to be modified.
> >
> > Thanks,
> >
> > Ogechi Nnadi.
> > _______________________________________________
> > mdt-uml2tools.dev mailing list
> > mdt-uml2tools.dev@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/mdt-uml2tools.dev
> >
>
>
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> End of mdt-uml2tools.dev Digest, Vol 6, Issue 1
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