Eclipse Community Forums: TMF (Xtext)

Home » Modeling » TMF (Xtext) » Hyperlinking

Mon, 23 April 2012 06:05

Eclipse User

Hi all,
I'm trying to create an hyperlink from an EObject to another in the same file. I bind the DefaultHyperlinkDetector and then set MyHyperlinkHelper, I override the createHyperlinksByOffset method and in it I add the XtextHyperlink, but can it link to an EObject in the file?

Re: Hyperlinking [message #854140 is a reply to message #853768]

Mon, 23 April 2012 13:51

Eclipse User

Hi,

i do not understand your problem? could you elaborate a bit.

~Christian

Re: Hyperlinking [message #854214 is a reply to message #854140]

Mon, 23 April 2012 15:31

Eclipse User

I'm trying to have CTRL click on a VariableName to a VariableDeclaration. I bind the DefaultHyperlinkDetector

public Class<? extends DefaultHyperlinkDetector> bindDefaultHyperlinkDetector() { return MyLinkerService.class; }

this is MyLinkerService:

public class MyLinkerService extends DefaultHyperlinkDetector {

	
	
	@Override
	public IHyperlink[] detectHyperlinks(ITextViewer textViewer,
			IRegion region, boolean canShowMultipleHyperlinks) {
		this.setHelper(new MyHyperlink());
		return super.detectHyperlinks(textViewer, region, canShowMultipleHyperlinks);
	}
	
}

in MyLinkerService i set the helper to MyHyperlinkHelper:

public class MyHyperlinkHelper extends HyperlinkHelper {
    
    @Override
    public void createHyperlinksByOffset(XtextResource resource, int offset,
    		IHyperlinkAcceptor acceptor) {
    	super.createHyperlinksByOffset(resource, offset, acceptor);
    	
    	TextLocation loc = new TextLocation();
    	EObject eObject = EObjectAtOffsetHelper.resolveElementAt(resource, offset, loc);
    	if (eObject instanceof VariableName) {
    		VariableName varName = (VariableName) eObject;
    		
    		
    		CompositeNode adapter = NodeUtil.getNode(varName);
    		XtextHyperlink hyperlink = new XtextHyperlink();
    		hyperlink.setHyperlinkText("Variable");
    		hyperlink.setHyperlinkRegion(new Region(adapter.getOffset(), adapter.getLength()));
    		acceptor.accept(hyperlink);
    	}
    }
    
}

XtextHyperlink have a setURI() method but I want a link to the VariableDeclaration in the same file, how can I have this?

Re: Hyperlinking [message #854225 is a reply to message #854214]

Mon, 23 April 2012 15:45

Eclipse User

hi,

still do not understand org.eclipse.xtext.ui.editor.hyperlinking.HyperlinkHelper.createHyperlinksTo(XtextResource, Region, EObject, IHyperlinkAcceptor) contains all you need

~Christian

Re: Hyperlinking [message #854229 is a reply to message #854225]

Mon, 23 April 2012 15:51

Eclipse User

Btw why dont you simply bind HyperlinkHelper with guice means? your way of extension is not very Xtextish

Re: Hyperlinking [message #854292 is a reply to message #854229]

Mon, 23 April 2012 17:20

Eclipse User

I tried to override the createHyperlinksTo but this is never used, i try to put a simple syso in it but nothing happens:

@Override
    public void createHyperlinksTo(XtextResource from, Region region, EObject to, IHyperlinkAcceptor acceptor) {
    	System.out.println(HI_TO");
    	super.createHyperlinksTo(from, region, to, acceptor);
    }

I also have tried to bind only the HyperlinkHelper but the method in it aren't used:

public Class<? extends HyperlinkHelper> bindHyperlinkHelper() { return MyHyperlinkHelper.class; }

Re: Hyperlinking [message #854299 is a reply to message #854292]

Mon, 23 April 2012 17:33

Eclipse User

Hi,

the method is of cource only called if YOU call it or you have a real cross ref and thus is called by the framework (in its out of the box config)
besides you missed an important point

	@Override
	public Class<? extends IHyperlinkHelper> bindIHyperlinkHelper() {
		return MyDslHyperlinkHelper.class;
	}

Re: Hyperlinking [message #854313 is a reply to message #854299]

Mon, 23 April 2012 17:49

Eclipse User

I don't have a real cross ref and if I use the IHyperLinkHelper in binding I get this error:

1) A binding to org.eclipse.xtext.ui.editor.hyperlinking.IHyperlinkHelper was already configured at org.eclipse.xtext.service.BindModule.configure(BindModule.java:36).
  at org.eclipse.xtext.service.BindModule.configure(BindModule.java:36)

1 error
com.google.inject.CreationException: Guice creation errors:

1) A binding to org.eclipse.xtext.ui.editor.hyperlinking.IHyperlinkHelper was already configured at org.eclipse.xtext.service.BindModule.configure(BindModule.java:36).
  at org.eclipse.xtext.service.BindModule.configure(BindModule.java:36)

Is there a way to create an Hyperlink without a real cross ref?

[Updated on: Mon, 23 April 2012 18:02] by Moderator

Re: Hyperlinking [message #854328 is a reply to message #854313]

Mon, 23 April 2012 18:01

Eclipse User

Where do you but your binding I override!!! The existing in the UI
module thus I do not get such strange errors

Previous Topic:	Strage Memory leak in Semantic Highlighting
Next Topic:	Single File Generation - IFileSystemAccess/JavaIoFileSytemAccess

Goto Forum:

-=] Back to Top [=-

Current Time: Wed Jul 23 10:42:35 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter