Java ISourceViewer.getAnnotationModel方法代碼示例

import org.eclipse.jface.text.source.ISourceViewer; //導入方法依賴的package包/類
@SuppressWarnings("rawtypes")
@Override
public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
	IAnnotationModel model = sourceViewer.getAnnotationModel();
	Iterator iterator = model.getAnnotationIterator();
	while (iterator.hasNext()) {
		Annotation annotation = (Annotation) iterator.next();
		Position position = model.getPosition(annotation);
		try {
			int lineOfAnnotation = sourceViewer.getDocument().
					getLineOfOffset(position.getOffset());
			if (lineNumber == lineOfAnnotation) {
				return annotation.getText();
			}
		} catch (BadLocationException e) {
			// TODO: handle exception
		}
		
	}
	return null;
}
 

import org.eclipse.jface.text.source.ISourceViewer; //導入方法依賴的package包/類
private void ensureAnnotationModelInstalled() {
	LinkedPositionAnnotations lpa = fCurrentTarget.fAnnotationModel;
	if (lpa != null) {
		ITextViewer viewer = fCurrentTarget.getViewer();
		if (viewer instanceof ISourceViewer) {
			ISourceViewer sv = (ISourceViewer) viewer;
			IAnnotationModel model = sv.getAnnotationModel();
			if (model instanceof IAnnotationModelExtension) {
				IAnnotationModelExtension ext = (IAnnotationModelExtension) model;
				IAnnotationModel ourModel = ext.getAnnotationModel(getUniqueKey());
				if (ourModel == null) {
					ext.addAnnotationModel(getUniqueKey(), lpa);
				}
			}
		}
	}
}
 

import org.eclipse.jface.text.source.ISourceViewer; //導入方法依賴的package包/類
/**
 * Returns the actual position of <i>marker</i> or null if the marker was
 * deleted. Code inspired by 
 * @param marker
 * @param sourceViewer
 * @return
 */
private static int[] getMarkerPosition(IMarker marker, ISourceViewer sourceViewer) {
    int[] p = new int[2];
    p[0] = marker.getAttribute(IMarker.CHAR_START, -1);
    p[1] = marker.getAttribute(IMarker.CHAR_END, -1);
 // look up the current range of the marker when the document has been edited
    IAnnotationModel model= sourceViewer.getAnnotationModel();
    if (model instanceof AbstractMarkerAnnotationModel) {

        AbstractMarkerAnnotationModel markerModel= (AbstractMarkerAnnotationModel) model;
        Position pos= markerModel.getMarkerPosition(marker);
        if (pos != null && !pos.isDeleted()) {
            // use position instead of marker values
            p[0] = pos.getOffset();
            p[1] = pos.getOffset() + pos.getLength();
        }

        if (pos != null && pos.isDeleted()) {
            // do nothing if position has been deleted
            return null;
        }
    }
    return p;
}
 

import org.eclipse.jface.text.source.ISourceViewer; //導入方法依賴的package包/類
private void uninstallAnnotationModel(LinkedModeUITarget target) {
	ITextViewer viewer = target.getViewer();
	if (viewer instanceof ISourceViewer) {
		ISourceViewer sv = (ISourceViewer) viewer;
		IAnnotationModel model = sv.getAnnotationModel();
		if (model instanceof IAnnotationModelExtension) {
			IAnnotationModelExtension ext = (IAnnotationModelExtension) model;
			ext.removeAnnotationModel(getUniqueKey());
		}
	}
}
 

import org.eclipse.jface.text.source.ISourceViewer; //導入方法依賴的package包/類
/**
 * Find a problem marker from the given line and return its error message.
 * 
 * @param sourceViewer the source viewer
 * @param lineNumber line number in the file, starting from zero
 * @return the message of the marker of null, if no marker at the specified line
 */
public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
    IDocument document= sourceViewer.getDocument();
    IAnnotationModel model= sourceViewer.getAnnotationModel();
    
    if (model == null)
        return null;
    
    List<String> lineMarkers = null;

    Iterator<Annotation> e= model.getAnnotationIterator();
    while (e.hasNext()) {
        Annotation o= e.next();
        if (o instanceof MarkerAnnotation) {
            MarkerAnnotation a= (MarkerAnnotation) o;
            if (isRulerLine(model.getPosition(a), document, lineNumber)) {
                if (lineMarkers == null)
                    lineMarkers = new LinkedList<String>();
                lineMarkers.add(a.getMarker().getAttribute(IMarker.MESSAGE, null));
            }
        }
    }
    if (lineMarkers != null)
        return getMessage(lineMarkers);
    
    return null;
}