/*
* @see org.eclipse.jface.text.source.AnnotationPainter#findAnnotationModel(org.eclipse.jface.text.source.ISourceViewer)
*/
protected IAnnotationModel findAnnotationModel(ISourceViewer sourceViewer) {
if (sourceViewer instanceof ProjectionViewer) {
ProjectionViewer projectionViewer = (ProjectionViewer) sourceViewer;
return projectionViewer.getProjectionAnnotationModel();
}
return null;
}
/**
* Implements the contract of {@link
* org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)} by forwarding the adapter
* requests to the given viewer.
*
* @param viewer the viewer
* @param required the required class of the adapter
* @return the adapter or <code>null</code>
*/
public Object getAdapter(ISourceViewer viewer, Class required) {
if (ProjectionAnnotationModel.class.equals(required)) {
if (viewer instanceof ProjectionViewer) {
ProjectionViewer projectionViewer = (ProjectionViewer) viewer;
return projectionViewer.getProjectionAnnotationModel();
}
}
return null;
}
/** Removes the projection ruler column and the painter from the projection viewer. */
protected void doDisableProjection() {
if (fPainter != null) {
fViewer.removePainter(fPainter);
fPainter.dispose();
fPainter = null;
}
if (fColumn != null) {
fViewer.removeVerticalRulerColumn(fColumn);
fColumn = null;
}
}
/**
* Enables projection mode. If not yet done, installs the projection ruler column in the viewer's
* vertical ruler and installs a painter that indicate the locations of collapsed regions.
*/
protected void doEnableProjection() {
if (fPainter == null) {
fPainter = new ProjectionAnnotationsPainter(fViewer, fAnnotationAccess);
fPainter.addDrawingStrategy(PROJECTION, getDrawingStrategy());
fPainter.addAnnotationType(ProjectionAnnotation.TYPE, PROJECTION);
fPainter.setAnnotationTypeColor(
ProjectionAnnotation.TYPE, fSharedTextColors.getColor(getColor()));
fViewer.addPainter(fPainter);
}
if (fColumn == null) {
fColumn = new ProjectionRulerColumn(9, fAnnotationAccess);
fColumn.addAnnotationType(ProjectionAnnotation.TYPE);
fColumn.setHover(createProjectionAnnotationHover());
fViewer.addVerticalRulerColumn(fColumn);
}
fColumn.setModel(fViewer.getVisualAnnotationModel());
}
/** Disposes this projection support. */
public void dispose() {
if (fProjectionListener != null) {
fViewer.removeProjectionListener(fProjectionListener);
fProjectionListener = null;
}
}
/** Installs this projection support on its viewer. */
public void install() {
fViewer.setProjectionSummary(createProjectionSummary());
fProjectionListener = new ProjectionListener();
fViewer.addProjectionListener(fProjectionListener);
}
