org.eclipse.jface.text.source.IAnnotationModel#addAnnotation ( )源码实例Demo

/**
 * Removes annotations and replaces them in one step.
 *
 * @param model The {@link IAnnotationModel} that should be cleaned.
 * @param annotationsToRemove The annotations to remove.
 * @param annotationsToAdd The annotations to add.
 */
public void replaceAnnotationsInModel(
    IAnnotationModel model,
    Collection<? extends Annotation> annotationsToRemove,
    Map<? extends Annotation, Position> annotationsToAdd) {

  if (model instanceof IAnnotationModelExtension) {
    IAnnotationModelExtension extension = (IAnnotationModelExtension) model;
    extension.replaceAnnotations(
        annotationsToRemove.toArray(new Annotation[annotationsToRemove.size()]),
        annotationsToAdd);
  } else {
    if (log.isTraceEnabled())
      log.trace("AnnotationModel " + model + " does not support IAnnotationModelExtension");

    for (Annotation annotation : annotationsToRemove) {
      model.removeAnnotation(annotation);
    }

    for (Entry<? extends Annotation, Position> entry : annotationsToAdd.entrySet()) {
      model.addAnnotation(entry.getKey(), entry.getValue());
    }
  }
}
 

/**
 * Creates a new annotation
 * @param r The IRegion which should be highlighted
 * @param annString The name of the annotation (not important)
 * @param model The AnnotationModel
 */
private void createNewAnnotation(IRegion r, String annString, IAnnotationModel model) {
        Annotation annotation= new Annotation(ANNOTATION_TYPE, false, annString);
        Position position= new Position(r.getOffset(), r.getLength());
        model.addAnnotation(annotation, position);
        fOldAnnotations.add(annotation);
}
 

public void run()
{
    ITextEditor editor = getTextEditor();
    ISelection selection = editor.getSelectionProvider().getSelection();
    if (selection instanceof ITextSelection)
    {
        ITextSelection textSelection = (ITextSelection) selection;
        if (textSelection.getLength() != 0)
        {
            IAnnotationModel model = getAnnotationModel(editor);
            if (model != null)
            {

                int start = textSelection.getStartLine();
                int end = textSelection.getEndLine();

                try
                {
                    IDocument document = editor.getDocumentProvider().getDocument(editor.getEditorInput());
                    int offset = document.getLineOffset(start);
                    int endOffset = document.getLineOffset(end + 1);
                    Position position = new Position(offset, endOffset - offset);
                    model.addAnnotation(new ProjectionAnnotation(), position);
                } catch (BadLocationException x)
                {
                    // ignore
                }
            }
        }
    }
}
 

private void calculateLightBulb(IAnnotationModel model, IInvocationContext context) {
	boolean needsAnnotation= JavaCorrectionProcessor.hasAssists(context);
	if (fIsAnnotationShown) {
		model.removeAnnotation(fAnnotation);
	}
	if (needsAnnotation) {
		model.addAnnotation(fAnnotation, new Position(context.getSelectionOffset(), context.getSelectionLength()));
	}
	fIsAnnotationShown= needsAnnotation;
}
 

public IStatus run(IProgressMonitor progressMonitor) {
	fProgressMonitor = progressMonitor;

	if (isCanceled()) {
		if (LinkedModeModel.hasInstalledModel(fDocument)) {
			// Template completion applied, remove occurrences
			removeOccurrenceAnnotations();
		}
		return Status.CANCEL_STATUS;
	}
	ITextViewer textViewer = getViewer();
	if (textViewer == null)
		return Status.CANCEL_STATUS;

	IDocument document = textViewer.getDocument();
	if (document == null)
		return Status.CANCEL_STATUS;

	IAnnotationModel annotationModel = getAnnotationModel();
	if (annotationModel == null)
		return Status.CANCEL_STATUS;

	// Add occurrence annotations
	int length = fPositions.length;
	Map annotationMap = new HashMap(length);
	for (int i = 0; i < length; i++) {

		if (isCanceled())
			return Status.CANCEL_STATUS;

		String message;
		Position position = fPositions[i];

		// Create & add annotation
		try {
			message = document.get(position.offset, position.length);
		} catch (BadLocationException ex) {
			// Skip this match
			continue;
		}
		annotationMap.put(new Annotation("org.eclipse.wst.jsdt.ui.occurrences", false, message), //$NON-NLS-1$
				position);
	}

	if (isCanceled())
		return Status.CANCEL_STATUS;

	synchronized (getLockObject(annotationModel)) {
		if (annotationModel instanceof IAnnotationModelExtension) {
			((IAnnotationModelExtension) annotationModel).replaceAnnotations(fOccurrenceAnnotations,
					annotationMap);
		} else {
			removeOccurrenceAnnotations();
			Iterator iter = annotationMap.entrySet().iterator();
			while (iter.hasNext()) {
				Map.Entry mapEntry = (Map.Entry) iter.next();
				annotationModel.addAnnotation((Annotation) mapEntry.getKey(), (Position) mapEntry.getValue());
			}
		}
		fOccurrenceAnnotations = (Annotation[]) annotationMap.keySet()
				.toArray(new Annotation[annotationMap.keySet().size()]);
	}

	return Status.OK_STATUS;
}
 

/**
 * Given the offset, tries to determine if we're on an HTML close/start tag, and if so it will find the matching
 * open/close and highlight the pair.
 * 
 * @param offset
 */
private void highlightTagPair(int offset)
{
	IDocumentProvider documentProvider = getDocumentProvider();
	if (documentProvider == null)
	{
		return;
	}
	IAnnotationModel annotationModel = documentProvider.getAnnotationModel(getEditorInput());
	if (annotationModel == null)
	{
		return;
	}

	if (fTagPairOccurrences != null)
	{
		// if the offset is included by one of these two positions, we don't need to wipe and re-calculate!
		for (Position pos : fTagPairOccurrences.values())
		{
			if (pos.includes(offset))
			{
				return;
			}
		}
		// New position, wipe the existing annotations in preparation for re-calculating...
		for (Annotation a : fTagPairOccurrences.keySet())
		{
			annotationModel.removeAnnotation(a);
		}
		fTagPairOccurrences = null;
	}

	// Calculate current pair
	Map<Annotation, Position> occurrences = new HashMap<Annotation, Position>();
	IDocument document = getSourceViewer().getDocument();

	IParseNode node = getASTNodeAt(offset, getAST());
	if (node instanceof XMLElementNode)
	{
		XMLElementNode en = (XMLElementNode) node;
		if (!en.isSelfClosing())
		{
			IRegion match = TagUtil.findMatchingTag(document, offset, tagPartitions);
			if (match != null)
			{
				// TODO Compare versus last positions, if they're the same don't wipe out the old ones and add new
				// ones!
				occurrences.put(new Annotation(IXMLEditorConstants.TAG_PAIR_OCCURRENCE_ID, false, null),
						new Position(match.getOffset(), match.getLength()));

				try
				{
					// The current tag we're in!
					ITypedRegion partition = document.getPartition(offset);
					occurrences.put(new Annotation(IXMLEditorConstants.TAG_PAIR_OCCURRENCE_ID, false, null),
							new Position(partition.getOffset(), partition.getLength()));
				}
				catch (BadLocationException e)
				{
					IdeLog.logError(XMLPlugin.getDefault(), e);
				}
				for (Map.Entry<Annotation, Position> entry : occurrences.entrySet())
				{
					annotationModel.addAnnotation(entry.getKey(), entry.getValue());
				}
				fTagPairOccurrences = occurrences;
				return;
			}
		}
	}
	// no new pair, so don't highlight anything
	fTagPairOccurrences = null;
}
 

/**
 * Given the offset, tries to determine if we're on an HTML close/start tag, and if so it will find the matching
 * open/close and highlight the pair.
 * 
 * @param offset
 */
private void highlightTagPair(int offset)
{
	IDocumentProvider documentProvider = getDocumentProvider();
	if (documentProvider == null)
	{
		return;
	}
	IAnnotationModel annotationModel = documentProvider.getAnnotationModel(getEditorInput());
	if (annotationModel == null)
	{
		return;
	}

	if (fTagPairOccurrences != null)
	{
		// if the offset is included by one of these two positions, we don't need to wipe and re-calculate!
		for (Position pos : fTagPairOccurrences.values())
		{
			if (pos.includes(offset))
			{
				return;
			}
		}
		// New position, wipe the existing annotations in preparation for re-calculating...
		for (Annotation a : fTagPairOccurrences.keySet())
		{
			annotationModel.removeAnnotation(a);
		}
		fTagPairOccurrences = null;
	}

	// Calculate current pair
	Map<Annotation, Position> occurrences = new HashMap<Annotation, Position>();
	IDocument document = getSourceViewer().getDocument();
	IRegion match = TagUtil.findMatchingTag(document, offset, tagPartitions);
	if (match != null)
	{
		// TODO Compare versus last positions, if they're the same don't wipe out the old ones and add new ones!
		occurrences.put(new Annotation(IHTMLConstants.TAG_PAIR_OCCURRENCE_ID, false, null),
				new Position(match.getOffset(), match.getLength()));

		try
		{
			// The current tag we're in!
			ITypedRegion partition = document.getPartition(offset);
			occurrences.put(new Annotation(IHTMLConstants.TAG_PAIR_OCCURRENCE_ID, false, null), new Position(
					partition.getOffset(), partition.getLength()));
		}
		catch (BadLocationException e)
		{
			IdeLog.logError(HTMLPlugin.getDefault(), e);
		}
		for (Map.Entry<Annotation, Position> entry : occurrences.entrySet())
		{
			annotationModel.addAnnotation(entry.getKey(), entry.getValue());
		}
		fTagPairOccurrences = occurrences;
	}
	else
	{
		// no new pair, so don't highlight anything
		fTagPairOccurrences = null;
	}
}
 

@Override
public IStatus run(IProgressMonitor progressMonitor) {
	if (isCanceled(progressMonitor))
		return Status.CANCEL_STATUS;

	ITextViewer textViewer= getViewer();
	if (textViewer == null)
		return Status.CANCEL_STATUS;

	IDocument document= textViewer.getDocument();
	if (document == null)
		return Status.CANCEL_STATUS;

	IDocumentProvider documentProvider= getDocumentProvider();
	if (documentProvider == null)
		return Status.CANCEL_STATUS;

	IAnnotationModel annotationModel= documentProvider.getAnnotationModel(getEditorInput());
	if (annotationModel == null)
		return Status.CANCEL_STATUS;

	// Add occurrence annotations
	int length= fLocations.length;
	Map<Annotation, Position> annotationMap= new HashMap<Annotation, Position>(length);
	for (int i= 0; i < length; i++) {

		if (isCanceled(progressMonitor))
			return Status.CANCEL_STATUS;

		OccurrenceLocation location= fLocations[i];
		Position position= new Position(location.getOffset(), location.getLength());

		String description= location.getDescription();
		String annotationType= (location.getFlags() == IOccurrencesFinder.F_WRITE_OCCURRENCE) ? "org.eclipse.jdt.ui.occurrences.write" : "org.eclipse.jdt.ui.occurrences"; //$NON-NLS-1$ //$NON-NLS-2$

		annotationMap.put(new Annotation(annotationType, false, description), position);
	}

	if (isCanceled(progressMonitor))
		return Status.CANCEL_STATUS;

	synchronized (getLockObject(annotationModel)) {
		if (annotationModel instanceof IAnnotationModelExtension) {
			((IAnnotationModelExtension)annotationModel).replaceAnnotations(fOccurrenceAnnotations, annotationMap);
		} else {
			removeOccurrenceAnnotations();
			Iterator<Entry<Annotation, Position>> iter= annotationMap.entrySet().iterator();
			while (iter.hasNext()) {
				Entry<Annotation, Position> mapEntry= iter.next();
				annotationModel.addAnnotation(mapEntry.getKey(), mapEntry.getValue());
			}
		}
		fOccurrenceAnnotations= annotationMap.keySet().toArray(new Annotation[annotationMap.keySet().size()]);
	}

	return Status.OK_STATUS;
}
 

/**
 * Validates the current script, and selects the error if the specified falg
 * is <code>true</code>.
 * 
 * @param isFunctionBody
 *            <code>true</code> if a function body is validated,
 *            <code>false</code> otherwise.
 * @param isErrorSelected
 *            <code>true</code> if error will be selected after
 *            validating, <code>false</code> otherwise.
 * @throws ParseException
 *             if an syntax error is found.
 */
public void validate( boolean isFunctionBody, boolean isErrorSelected )
		throws ParseException
{
	if ( scriptViewer == null )
	{
		return;
	}

	clearAnnotations( );

	StyledText textField = scriptViewer.getTextWidget( );

	if ( textField == null || !textField.isEnabled( ) )
	{
		return;
	}

	String functionTag = "function(){"; //$NON-NLS-1$
	IDocument document = scriptViewer.getDocument( );
	String text = document == null ? null : scriptViewer.getDocument( )
			.get( );

	String script = text;

	if ( isFunctionBody )
	{
		script = functionTag + script + "\n}"; //$NON-NLS-1$
	}

	try
	{
		validateScript( script );
	}
	catch ( ParseException e )
	{
		int offset = e.getErrorOffset( );

		if ( isFunctionBody )
		{
			offset -= functionTag.length( );
			while ( offset >= text.length( ) )
			{
				offset--;
			}
		}

		String errorMessage = e.getLocalizedMessage( );
		Position position = getErrorPosition( text, offset );

		if ( position != null )
		{
			IAnnotationModel annotationModel = scriptViewer.getAnnotationModel( );

			if ( annotationModel != null )
			{
				annotationModel.addAnnotation( new Annotation( IReportGraphicConstants.ANNOTATION_ERROR,
						true,
						errorMessage ),
						position );
			}
			if ( isErrorSelected )
			{
				if ( scriptViewer instanceof SourceViewer )
				{
					( (SourceViewer) scriptViewer ).setSelection( new TextSelection( position.getOffset( ),
							position.getLength( ) ) );
				}
				scriptViewer.revealRange( position.getOffset( ),
						position.getLength( ) );
			}
		}
		throw new ParseException( e.getLocalizedMessage( ), position.offset );
	}
}