int ops = DND.DROP_COPY;
int ops = DND.DROP_COPY | DND.DROP_LINK;
	protected void configTreeViewer( )	{		ViewsTreeProvider provider = new LibraryExplorerProvider( );		treeViewer.setContentProvider( provider );		treeViewer.setLabelProvider( provider );		// Adds drag and drop support		int ops = DND.DROP_COPY;		Transfer[] transfers = new Transfer[]{			TemplateTransfer.getInstance( )		};		treeViewer.addDragSupport( ops,				transfers,				new LibraryDragListener( treeViewer ) );		treeViewer.getControl( ).addKeyListener( new KeyListener( ) {			public void keyPressed( KeyEvent e )			{			}			public void keyReleased( KeyEvent e )			{				if ( e.keyCode == SWT.F5 )				{					treeViewer.refresh( );				}			}		} );		treeViewer.getTree( ).addDisposeListener( new DisposeListener( ) {			public void widgetDisposed( DisposeEvent e )			{				Object input = treeViewer.getInput( );				if ( input instanceof Object[] )				{					Object[] array = (Object[]) input;					for ( int i = 0; i < array.length; i++ )					{						if ( array[i] instanceof ResourceEntry )							( (ResourceEntry) array[i] ).dispose( );					}				}			}		} );	}