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Menu contribution problem in project Explorer [message #1213816]

Wed, 27 November 2013 07:03

Eclipse User

Dear all,

I have developed an Acceleo generator plugin able to generate WordML documentation from UML models. My UML editor is papyrus 0.10.0.

I would like to execute a command from a popup menu (right click) when I select the UML file of the Papyrus model. I have tested the commands and they work fine.

However, in the project explorer of papyrus, my popup doesn't appear. When I'm a regular project with an classic UML file, I see my popup. Here is my plugin.xml:

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.ui.menus">
      <menuContribution
            locationURI="popup:org.eclipse.ui.navigator.ProjectExplorer#PopupMenu?after=additions">
         <menu
               icon="icons/document.gif"
               id="doc_generators"
               label="Generate documents"
               tooltip="Utilities able to generate documentation">
         </menu>
      </menuContribution>
      <menuContribution
            locationURI="popup:doc_generators?after=additions">
         <command
               commandId="com.spacebel.acceleo.uml.to.wordml.ui.generateADD"
               label="Generate ADD (WordML)"
               mode="FORCE_TEXT"
               style="push"
               tooltip="Generation of the ADD document in WordML">
            <visibleWhen>
               <with
                     variable="selection">
                  <iterate
                        ifEmpty="false">
                     <instanceof
                           value="org.eclipse.core.resources.IResource">
                     </instanceof>
                     <test
                           property="org.eclipse.core.resources.name"
                           value="*.uml">
                     </test>
                  </iterate>
               </with>
            </visibleWhen>
         </command>
         <command
               commandId="com.spacebel.acceleo.uml.to.wordml.ui.generateSRD"
               label="Generate SRD (WordML)"
               mode="FORCE_TEXT"
               style="push"
               tooltip="Generation of the SRD document in WordML">
            <visibleWhen>
               <with
                     variable="selection">
                  <iterate
                        ifEmpty="false">
                     <test
                           property="org.eclipse.core.resources.name"
                           value="*.uml">
                     </test>
                     <instanceof
                           value="org.eclipse.core.resources.IResource">
                     </instanceof>
                  </iterate>
               </with>
            </visibleWhen>
         </command>
      </menuContribution>
   </extension>
   <extension
         point="org.eclipse.ui.commands">
      <command
            id="com.spacebel.acceleo.uml.to.wordml.ui.generateADD"
            name="Generate ADD (WordML)">
      </command>
      <command
            id="com.spacebel.acceleo.uml.to.wordml.ui.generateSRD"
            name="Generate SRD (WordML)">
      </command>
   </extension>
   <extension
         point="org.eclipse.ui.handlers">
      <handler
            class="com.spacebel.acceleo.uml.to.wordml.ui.GenerateSRDHandler"
            commandId="com.spacebel.acceleo.uml.to.wordml.ui.generateSRD">
      </handler>
      <handler
            class="com.spacebel.acceleo.uml.to.wordml.ui.GenerateADDHandler"
            commandId="com.spacebel.acceleo.uml.to.wordml.ui.generateADD">
      </handler>
   </extension>

</plugin>

Does anyone have an idea ? I guess that the instanceOf in my test or the URI is not correct ...

In advance, thanks for your help.
Regards;

Re: Menu contribution problem in project Explorer [message #1215992 is a reply to message #1213816]

Thu, 28 November 2013 04:24

Eclipse User

Hi Johan,

If you are using the Project Explorer with the "Di View" filter activated (It is on by default), you cannot use "instanceof" in your "visible when" expression. You must use "Adapt" instead.

Here's an example of a Project Explorer menu contribution, which works for all files (Associated to Papyrus or not):

<menuContribution
    allPopups="false"
    locationURI="popup:org.eclipse.ui.navigator.ProjectExplorer#PopupMenu?after=additions">
	<command
	       commandId="org.eclipse.papyrus.doSomething"
	       style="push">
	    <visibleWhen
	          checkEnabled="false">
	       <with
	             variable="selection">
	          <iterate
	                ifEmpty="false"
	                operator="and">
	             <adapt
	                   type="org.eclipse.core.resources.IFile">
	                <or>
	                   <test
	                         property="org.eclipse.core.resources.extension"
	                         value="uml">
	                   </test>
	                </or>
	             </adapt>
	          </iterate>
	       </with>
	    </visibleWhen>
	</command>
</menuContribution>

Regards,
Camille

Re: Menu contribution problem in project Explorer [message #1216030 is a reply to message #1215992]

Thu, 28 November 2013 04:45

Eclipse User

Camille,

Thank you for your proposition. Actually, I have already tried this solution. However, it is not possible to adapt the SubResourceFile into an IFile. If I use your piece of code, I have an exception:

!ENTRY org.eclipse.ui 4 0 2013-11-28 10:39:07.115
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.ClassCastException: org.eclipse.papyrus.infra.onefile.model.impl.SubResourceFile cannot be cast to org.eclipse.core.resources.IFile
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:243)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:224)
etc ...

Best regards;
Johan

[Updated on: Thu, 28 November 2013 04:46] by Moderator

Re: Menu contribution problem in project Explorer [message #1216485 is a reply to message #1216030]

Thu, 28 November 2013 08:53

Eclipse User

Hi Johan,

I'm using this piece of code right now, so, it definitely works. There should not be a "ClassCastException", because "Adapt" is not a Cast (Unless there is another piece of code/extension, elsewhere, which tries to cast the SubResourceFile to an IFile instead of Adapting it).

You should try to define your menu first, and, once it appears correctly, add the command/handler, and see at which point it actually fails.

Regards,
Camille

Re: Menu contribution problem in project Explorer [message #1216586 is a reply to message #1216485]

Thu, 28 November 2013 09:48

Eclipse User

Hi Camille,

Your are right, it is indeed a problem in my handler:

	public Object execute(ExecutionEvent event) throws ExecutionException {
	ISelection selection = HandlerUtil.getActiveWorkbenchWindow(event).getActivePage().getSelection();
        if (selection != null & selection instanceof IStructuredSelection) {
        	model = (IFile)((IStructuredSelection) selection).getFirstElement();
etc ...

The casting from Object to IFile with the IStructuredSelection doesn't work anymore.

Is there any generic adaptable to have the IFile from IStructuredSelection ?

Thanks for your help;
Johan

Re: Menu contribution problem in project Explorer [message #1216597 is a reply to message #1216586]

Thu, 28 November 2013 09:52

Eclipse User

Hi Johan,

The IStructuredSelection itself is not adaptable. However, the element inside the selection is.

if (selection != null & selection instanceof IStructuredSelection) {
    if (! selection.isEmpty()){
        Object selectedElement = ((IStructuredSelection)selection).getFirstElement();
        if (selectedElement instanceof IAdaptable){
            model = (IFile)((IAdaptable)selectedElement).getAdapter(IFile.class);
        }
    }
}

Regards,
Camille

Re: Menu contribution problem in project Explorer [message #1216599 is a reply to message #1216597]

Thu, 28 November 2013 09:54

Eclipse User

Ahaha I have just found out the solution too but in two lines .. and in one line for you.
It works perfectly !

Thank you Camille !!

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