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Set focus after quickfix [message #881260]

Mon, 04 June 2012 08:42

Michael Ehrmann

Messages: 2
Registered: June 2012

Junior Member

Hi,

We're trying to implement a quickfix using a ISemanticModification, which introduces a new object in the model. Now we want to set the focus to this model, to let the user modify (refactor) the newly introduced random name of the object.

acceptor.accept(issue, "introduce prototype", "Introduce a new prototype", null, new ISemanticModification() {					
   public void apply(EObject element, IModificationContext context) throws Exception {
						
      Prototype newPrototype = ExamplePackage.eINSTANCE.getExampleFactory().createPrototype();
      model.getPrototypes().add(newPrototype);

Now we want to set the focus.
I understand that this would be possible by using

EditorUtils.getActiveXtextEditor().setHighlightRange(offset, length, true);

But we struggle determining offset/length.

I tried

locationInFileProvider.getFullTextRegion(newPrototype);

as well as

getSignificantTextRegion

but this seems to return bogus values.

NodeModelUtils.getNode(newPrototype);

seems also not possible.

It seems to me that the underlying model still has not yet been updated.
Anyone can give a hint?

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Re: Set focus after quickfix [message #881411 is a reply to message #881260]

Mon, 04 June 2012 13:55

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Hi Michael,

I'm afraid you'll have to schedule a UI job that performs that task.
Alternatively you may want to use the underlying JFace API that allows
to access the ITextViewer.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 04.06.12 10:43, schrieb Michael Ehrmann:
> Hi,
>
> We're trying to implement a quickfix using a ISemanticModification,
> which introduces a new object in the model. Now we want to set the focus
> to this model, to let the user modify (refactor) the newly introduced
> random name of the object.
>
>
> acceptor.accept(issue, "introduce prototype", "Introduce a new
> prototype", null, new ISemanticModification() {
> public void apply(EObject element, IModificationContext context) throws
> Exception {
>
> Prototype newPrototype =
> ExamplePackage.eINSTANCE.getExampleFactory().createPrototype();
> model.getPrototypes().add(newPrototype);
>
>
>
> Now we want to set the focus.
> I understand that this would be possible by using
>
>
> EditorUtils.getActiveXtextEditor().setHighlightRange(offset, length, true);
>
>
>
> But we struggle determining offset/length.
>
> I tried locationInFileProvider.getFullTextRegion(newPrototype); as well
> as getSignificantTextRegion but this seems to return bogus values.
>
> NodeModelUtils.getNode(newPrototype); seems also not possible.
>
> It seems to me that the underlying model still has not yet been updated.
> Anyone can give a hint?
>
>
>

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Re: Set focus after quickfix [message #881864 is a reply to message #881260]

Tue, 05 June 2012 11:55

Michael Ehrmann

Messages: 2
Registered: June 2012

Junior Member

This worked for me:

final String uriFragment = model.eResource().getURIFragment(newPrototype);
final IXtextDocument doc = context.getXtextDocument();

doc.addModelListener(new IXtextModelListener() {
	
	@Override
	public void modelChanged(XtextResource resource) {
		
		EObject eObject = resource.getEObject(uriFragment); //fetch our newly introduced prototype object
		if (eObject != null) {
			final ICompositeNode node = NodeModelUtils.getNode(eObject); //fetch the node, so we can get the offset										
			if (node != null) {										
				PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
					@Override
					public void run() {
						EditorUtils.getActiveXtextEditor().setHighlightRange(node.getOffset(), node.getLength(), true);
					}
				});
			}									
		}
		doc.removeModelListener(this);
	}
});

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