org.eclipse.xtext.ui.editor.XtextSourceViewerConfiguration Java Examples

/**
 * Internally compute completion proposals.
 *
 * @param cursorPosition
 *          the position of the cursor in the {@link IXtextDocument}
 * @param xtextDocument
 *          the {@link IXtextDocument}
 * @return a pair of {@link ICompletionProposal}[] and {@link BadLocationException}. If the tail argument is not {@code null}, an exception occurred in the UI
 *         thread.
 */
private Pair<ICompletionProposal[], BadLocationException> internalComputeCompletionProposals(final int cursorPosition, final IXtextDocument xtextDocument) {
  XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
  Shell shell = new Shell();
  try {
    ISourceViewer sourceViewer = getSourceViewer(shell, xtextDocument, configuration);
    IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
    String contentType = xtextDocument.getContentType(cursorPosition);
    IContentAssistProcessor processor = contentAssistant.getContentAssistProcessor(contentType);
    if (processor != null) {
      return Tuples.create(processor.computeCompletionProposals(sourceViewer, cursorPosition), null);
    }
    return Tuples.create(new ICompletionProposal[0], null);
  } catch (BadLocationException e) {
    return Tuples.create(new ICompletionProposal[0], e);
  } finally {
    shell.dispose();
  }
}
 

public ContentAssistProcessorTestBuilder assertMatchString(String matchString)
		throws Exception {
	String currentModelToParse = getModel();
	final XtextResource xtextResource = loadHelper.getResourceFor(new StringInputStream(currentModelToParse));
	final IXtextDocument xtextDocument = getDocument(xtextResource, currentModelToParse);
	XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
	Shell shell = new Shell();
	try {
		ISourceViewer sourceViewer = getSourceViewer(shell, xtextDocument, configuration);
		IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
		String contentType = xtextDocument.getContentType(currentModelToParse.length());
		if (contentAssistant.getContentAssistProcessor(contentType) != null) {
			ContentAssistContext.Factory factory = get(ContentAssistContext.Factory.class);
			ContentAssistContext[] contexts = factory.create(sourceViewer, currentModelToParse.length(), xtextResource);
			for(ContentAssistContext context: contexts) {
				Assert.assertTrue("matchString = '" + matchString + "', actual: '" + context.getPrefix() + "'",
						"".equals(context.getPrefix()) || matchString.equals(context.getPrefix()));
			}
		} else {
			Assert.fail("No content assistant for content type " + contentType);
		}
		return this;
	} finally {
		shell.dispose();
	}
}
 

public ContentAssistProcessorTestBuilder assertMatchString(String matchString)
		throws Exception {
	String currentModelToParse = getModel();
	final XtextResource xtextResource = loadHelper.getResourceFor(new StringInputStream(currentModelToParse, getEncoding()));
	final IXtextDocument xtextDocument = getDocument(xtextResource, currentModelToParse);
	XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
	Shell shell = new Shell();
	try {
		ISourceViewer sourceViewer = getSourceViewer(shell, xtextDocument, configuration);
		IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
		String contentType = xtextDocument.getContentType(currentModelToParse.length());
		if (contentAssistant.getContentAssistProcessor(contentType) != null) {
			ContentAssistContext.Factory factory = get(ContentAssistContext.Factory.class);
			ContentAssistContext[] contexts = factory.create(sourceViewer, currentModelToParse.length(), xtextResource);
			for(ContentAssistContext context: contexts) {
				Assert.assertTrue("matchString = '" + matchString + "', actual: '" + context.getPrefix() + "'",
						"".equals(context.getPrefix()) || matchString.equals(context.getPrefix()));
			}
		} else {
			Assert.fail("No content assistant for content type " + contentType);
		}
		return this;
	} finally {
		shell.dispose();
	}
}
 

protected ContentAssistProcessorTestBuilder applyProposal(ICompletionProposal proposal, int position, IXtextDocument document)
		throws Exception {
	Shell shell = new Shell();
	try {
		XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
		ISourceViewer sourceViewer = getSourceViewer(shell, document, configuration);
		return appendAndApplyProposal(proposal, sourceViewer, model, position);
	} finally {
		shell.dispose();
	}
}
 

/**
 * {@inheritDoc} Code copied from parent. Override required to run in UI because of getSourceViewer, which creates a new Shell.
 */
@Override
public ContentAssistProcessorTestBuilder assertMatchString(final String matchString) throws Exception {
  BadLocationException exception = UiThreadDispatcher.dispatchAndWait(new Function<BadLocationException>() {
    @Override
    public BadLocationException run() {
      String currentModelToParse = getModel();
      final XtextResource xtextResource = loadHelper.getResourceFor(new StringInputStream(currentModelToParse));
      final IXtextDocument xtextDocument = getDocument(xtextResource, currentModelToParse);
      XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
      Shell shell = new Shell();
      try {
        ISourceViewer sourceViewer = getSourceViewer(shell, xtextDocument, configuration);
        IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
        String contentType = xtextDocument.getContentType(currentModelToParse.length());
        if (contentAssistant.getContentAssistProcessor(contentType) != null) {
          ContentAssistContext.Factory factory = get(ContentAssistContext.Factory.class);
          ContentAssistContext[] contexts = factory.create(sourceViewer, currentModelToParse.length(), xtextResource);
          for (ContentAssistContext context : contexts) {
            Assert.assertTrue("matchString = '" + matchString + "', actual: '" + context.getPrefix() + "'", "".equals(context.getPrefix())
                || matchString.equals(context.getPrefix()));
          }
        } else {
          Assert.fail("No content assistant for content type " + contentType);
        }
      } catch (BadLocationException e) {
        return e;
      } finally {
        shell.dispose();
      }
      return null;
    }
  });
  if (exception != null) {
    throw exception;
  }
  return this;
}
 

/**
 * Helper function to find the correct CompletionProposalComputer for the given offset.
 *
 * @param offset
 *          offset in test file
 * @return language and offset specific content assist proposal computer
 */
private CompletionProposalComputer createCompletionProposalComputer(final int offset) {
  XtextSourceViewerConfiguration configuration = getEditor().getXtextSourceViewerConfiguration();
  IContentAssistant contentAssistant = configuration.getContentAssistant(getViewer());
  IContentAssistProcessor contentAssistProcessor;
  try {
    contentAssistProcessor = contentAssistant.getContentAssistProcessor(getDocument().getContentType(offset));
  } catch (BadLocationException e) {
    contentAssistProcessor = getTestUtil().get(IContentAssistProcessor.class);
  }
  if (contentAssistProcessor == null) {
    contentAssistProcessor = getTestUtil().get(IContentAssistProcessor.class);
  }
  return new CompletionProposalComputer((State) contentAssistProcessor, (ITextViewer) getViewer(), offset);
}
 

private ISourceViewer getSourceViewer(Shell shell,
		final IXtextDocument xtextDocument,
		XtextSourceViewerConfiguration configuration) {
	XtextSourceViewer.Factory factory = get(
			XtextSourceViewer.Factory.class);
	ISourceViewer sourceViewer = factory.createSourceViewer(shell, null,
			null, false, 0);
	sourceViewer.configure(configuration);
	sourceViewer.setDocument(xtextDocument);
	return sourceViewer;
}
 

private ICompletionProposal[] computeCompletionProposals(
		final IXtextDocument xtextDocument, int cursorPosition,
		XtextSourceViewerConfiguration configuration,
		ISourceViewer sourceViewer) throws BadLocationException {
	IContentAssistant contentAssistant = configuration
			.getContentAssistant(sourceViewer);
	String contentType = xtextDocument.getContentType(cursorPosition);
	IContentAssistProcessor processor = contentAssistant
			.getContentAssistProcessor(contentType);
	if (processor != null) {
		return processor.computeCompletionProposals(sourceViewer,
				cursorPosition);
	}
	return new ICompletionProposal[0];
}
 

private ICompletionProposal[] computeCompletionProposals(
		final IXtextDocument xtextDocument, int cursorPosition, Shell shell)
		throws BadLocationException {
	XtextSourceViewerConfiguration configuration = get(
			XtextSourceViewerConfiguration.class);
	ISourceViewer sourceViewer = getSourceViewer(shell, xtextDocument,
			configuration);
	return computeCompletionProposals(xtextDocument, cursorPosition,
			configuration, sourceViewer);
}
 

protected ISourceViewer getSourceViewer(Shell shell, final IXtextDocument xtextDocument,
		XtextSourceViewerConfiguration configuration) {
	XtextSourceViewer.Factory factory = get(XtextSourceViewer.Factory.class);
	ISourceViewer sourceViewer = factory.createSourceViewer(shell, null, null, false, 0);
	sourceViewer.configure(configuration);
	sourceViewer.setDocument(xtextDocument);
	return sourceViewer;
}
 

protected ICompletionProposal[] computeCompletionProposals(final IXtextDocument xtextDocument, int cursorPosition,
		XtextSourceViewerConfiguration configuration, ISourceViewer sourceViewer) throws BadLocationException {
	IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
	String contentType = xtextDocument.getContentType(cursorPosition);
	IContentAssistProcessor processor = contentAssistant.getContentAssistProcessor(contentType);
	if (processor != null) {
		return processor.computeCompletionProposals(sourceViewer, cursorPosition);
	}
	return new ICompletionProposal[0];
}
 

public ContentAssistProcessorTestBuilder appendAndApplyProposal(String model, int position, String proposalString) throws Exception {
	IXtextDocument document = getDocument(getModel());
	Shell shell = new Shell();
	try {
		XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
		ISourceViewer sourceViewer = getSourceViewer(shell, document, configuration);
		ICompletionProposal[] proposals = computeCompletionProposals(document, position, shell);
		ICompletionProposal proposal = findProposal(proposalString, proposals);
		return appendAndApplyProposal(proposal, sourceViewer, model, position);
	} finally {
		shell.dispose();
	}
}
 

protected ISourceViewer getSourceViewer(Shell shell, final IXtextDocument xtextDocument,
		XtextSourceViewerConfiguration configuration) {
	XtextSourceViewer.Factory factory = get(XtextSourceViewer.Factory.class);
	ISourceViewer sourceViewer = factory.createSourceViewer(shell, null, null, false, 0);
	sourceViewer.configure(configuration);
	sourceViewer.setDocument(xtextDocument);
	return sourceViewer;
}
 

protected ICompletionProposal[] computeCompletionProposals(final IXtextDocument xtextDocument, int cursorPosition,
		XtextSourceViewerConfiguration configuration, ISourceViewer sourceViewer) throws BadLocationException {
	IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
	String contentType = xtextDocument.getContentType(cursorPosition);
	IContentAssistProcessor processor = contentAssistant.getContentAssistProcessor(contentType);
	if (processor != null) {
		return processor.computeCompletionProposals(sourceViewer, cursorPosition);
	}
	return new ICompletionProposal[0];
}
 

protected ContentAssistProcessorTestBuilder applyProposal(ICompletionProposal proposal, int position, IXtextDocument document)
		throws Exception {
	Shell shell = new Shell();
	try {
		XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
		ISourceViewer sourceViewer = getSourceViewer(shell, document, configuration);
		return appendAndApplyProposal(proposal, sourceViewer, model, position);
	} finally {
		shell.dispose();
	}
}
 

public ContentAssistProcessorTestBuilder appendAndApplyProposal(String model, int position, String proposalString) throws Exception {
	IXtextDocument document = getDocument(getModel());
	Shell shell = new Shell();
	try {
		XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
		ISourceViewer sourceViewer = getSourceViewer(shell, document, configuration);
		ICompletionProposal[] proposals = computeCompletionProposals(document, position, shell);
		ICompletionProposal proposal = findProposal(proposalString, proposals);
		return appendAndApplyProposal(proposal, sourceViewer, model, position);
	} finally {
		shell.dispose();
	}
}
 

/**
 * @since 2.3
 */
public void install(XtextSourceViewerConfiguration configuration, XtextSourceViewer sourceViewer) {
	fSourceViewer= sourceViewer;
	fConfiguration= configuration;
	if(sourceViewer != null && configuration != null){
		fPresentationReconciler= (XtextPresentationReconciler) fConfiguration.getPresentationReconciler(sourceViewer);
	} else {
		fPresentationReconciler = null;
		fConfiguration = null;
	}
	preferenceStore = getPreferenceStoreAccessor().getPreferenceStore();
	preferenceStore.addPropertyChangeListener(this);
	enable();
}
 

public DefaultMergeViewer(Composite parent, int styles, CompareConfiguration compareConfiguration,
		StreamContentDocumentProvider documentProvider,
		Provider<XtextSourceViewerConfiguration> sourceViewerConfigurationProvider) {
	super(parent, styles | SWT.LEFT_TO_RIGHT, compareConfiguration);
	this.documentProvider = documentProvider;
	this.sourceViewerConfigurationProvider = sourceViewerConfigurationProvider;
}
 

public EmbeddedEditor(XtextDocument document, XtextSourceViewer viewer, XtextSourceViewerConfiguration configuration, IEditedResourceProvider resourceProvider, Runnable afterSetDocumet) {
	this.document = document;
	this.viewer = viewer;
	this.configuration = configuration;
	this.resourceProvider = resourceProvider;
	this.afterSetDocument = afterSetDocumet;
}
 

public Class<? extends XtextSourceViewerConfiguration> bindXtextSourceViewerConfiguration() {
	return XtendSourceViewerConfiguration.class;
}
 

protected XtextSourceViewerConfiguration getXtextSourceViewerConfiguration() {
	return this.configuration;
}
 

public Class<? extends XtextSourceViewerConfiguration> bindXtextSourceViewerConfiguration() {
	return GamaSourceViewerConfiguration.class;
}
 

public Class<? extends XtextSourceViewerConfiguration> bindSourceViewerConfiguration() {
	return XtendSourceViewerConfiguration.class;
}
 

public Class<? extends XtextSourceViewerConfiguration> bindXtextSourceViewerConfiguration() {
	return DotSourceViewerConfiguration.class;
}
 

protected ICompletionProposal[] computeCompletionProposals(final IXtextDocument xtextDocument, int cursorPosition,
		Shell shell) throws BadLocationException {
	XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
	ISourceViewer sourceViewer = getSourceViewer(shell, xtextDocument, configuration);
	return computeCompletionProposals(xtextDocument, cursorPosition, configuration, sourceViewer);
}
 

protected ICompletionProposal[] computeCompletionProposals(final IXtextDocument xtextDocument, int cursorPosition,
		Shell shell) throws BadLocationException {
	XtextSourceViewerConfiguration configuration = get(XtextSourceViewerConfiguration.class);
	ISourceViewer sourceViewer = getSourceViewer(shell, xtextDocument, configuration);
	return computeCompletionProposals(xtextDocument, cursorPosition, configuration, sourceViewer);
}
 

public XtextSourceViewerConfiguration getConfiguration() {
	return this.configuration;
}