Bug 71287 Reuse editor preference has no effect in tree mode
options -> Reuse editors to show matches in workbench -> search - has no effect
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/search/JavaSearchResultPage.java
JavaPluginImages.setLocalImageDescriptors(fGroupTypeAction, "type_mode.gif"); 
	}
	public void setViewPart(ISearchResultViewPart part) {
		super.setViewPart(part);
		fActionGroup= new NewSearchViewActionGroup(part);
	}
	
	public void showMatch(Match match, int offset, int length, boolean activate) throws PartInitException {
		IEditorPart editor;
		try {
			editor= fEditorOpener.open(match);
		} catch (JavaModelException e) {
			throw new PartInitException(e.getStatus());
		}
		
		if (editor != null && activate)
			editor.getEditorSite().getPage().activate(editor);
		Object element= match.getElement();
		if (editor instanceof ITextEditor) {
			ITextEditor textEditor= (ITextEditor) editor;
			textEditor.selectAndReveal(offset, length);
		} else if (editor != null){
			if (element instanceof IFile) {
				IFile file= (IFile) element;
				showWithMarker(editor, file, offset, length);
			}
		} else {
			JavaSearchResult result= (JavaSearchResult) getInput();
			IMatchPresentation participant= result.getSearchParticpant(element);
			if (participant != null)