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
}
	public void dispose() {
		fActionGroup.dispose();
		super.dispose();
	}
	
	protected void elementsChanged(Object[] objects) {
		if (fContentProvider != null)
			fContentProvider.elementsChanged(objects);
	}
	protected void clear() {
		if (fContentProvider != null)
			fContentProvider.clear();
	}
	
	private void addDragAdapters(StructuredViewer viewer) {
		Transfer[] transfers= new Transfer[] { LocalSelectionTransfer.getInstance(), ResourceTransfer.getInstance() };
		int ops= DND.DROP_COPY | DND.DROP_LINK;
		
		TransferDragSourceListener[] dragListeners= new TransferDragSourceListener[] {
			new SelectionTransferDragAdapter(viewer),
			new ResourceTransferDragAdapter(viewer)
		};
		
		viewer.addDragSupport(ops, transfers, new JdtViewerDragAdapter(viewer, dragListeners));
	}	
	protected void configureTableViewer(TableViewer viewer) {
		viewer.setUseHashlookup(true);
		SortingLabelProvider sortingLabelProvider= new SortingLabelProvider(this);
		viewer.setLabelProvider(new ColorDecoratingLabelProvider(sortingLabelProvider, PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator()));