Bug 128070 [implementation] Check usage of CustomSourceInformationControl
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
if (!isActivePart() && JavaPlugin.getActivePage() != null)
			JavaPlugin.getActivePage().bringToTop(this);
		setSelection(reference, !isActivePart());
	}
	/*
	 * @see AbstractTextEditor#adjustHighlightRange(int, int)
	 */
	protected void adjustHighlightRange(int offset, int length) {
		try {
			IJavaElement element= getElementAt(offset);
			while (element instanceof ISourceReference) {
				ISourceRange range= ((ISourceReference) element).getSourceRange();
				if (offset < range.getOffset() + range.getLength() && range.getOffset() < offset + length) {
					ISourceViewer viewer= getSourceViewer();
					if (viewer instanceof ITextViewerExtension5) {
						ITextViewerExtension5 extension= (ITextViewerExtension5) viewer;
						extension.exposeModelRange(new Region(range.getOffset(), range.getLength()));
					}
					setHighlightRange(range.getOffset(), range.getLength(), true);
					if (fOutlinePage != null) {
						fOutlineSelectionChangedListener.uninstall(fOutlinePage);
						fOutlinePage.select((ISourceReference) element);
						fOutlineSelectionChangedListener.install(fOutlinePage);
					}
					return;
				}
				element= element.getParent();
			}
		} catch (JavaModelException x) {
			JavaPlugin.log(x.getStatus());