How to use

getHoverLineRange

method

in

org.eclipse.jface.internal.text.revisions.RevisionPainter$RevisionHover

@Override
public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
  Object info= getHoverInfo(sourceViewer, getHoverLineRange(sourceViewer, lineNumber), 0);
  return info == null ? null : info.toString();
}

@Override
public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
  Object info= getHoverInfo(sourceViewer, getHoverLineRange(sourceViewer, lineNumber), 0);
  return info == null ? null : info.toString();
}

/**
 * Returns <code>true</code> if the receiver can provide a hover for a certain document line.
 *
 * @param activeLine the document line of interest
 * @return <code>true</code> if the receiver can provide a hover
 */
public boolean hasHover(int activeLine) {
  return fViewer instanceof ISourceViewer && fHover.getHoverLineRange((ISourceViewer) fViewer, activeLine) != null;
}

/**
 * Returns <code>true</code> if the receiver can provide a hover for a certain document line.
 *
 * @param activeLine the document line of interest
 * @return <code>true</code> if the receiver can provide a hover
 */
public boolean hasHover(int activeLine) {
  return fViewer instanceof ISourceViewer && fHover.getHoverLineRange((ISourceViewer) fViewer, activeLine) != null;
}