| /******************************************************************************* |
| * Copyright (c) 2008-2011 Chair for Applied Software Engineering, |
| * Technische Universitaet Muenchen. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| ******************************************************************************/ |
| package org.eclipse.emf.ecp.common.dnd; |
| |
| import java.util.List; |
| |
| import org.eclipse.emf.edit.ui.dnd.ViewerDragAdapter; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.dnd.DragSourceEvent; |
| |
| /** |
| * This class is just a ViewerDragAdpter, with the difference that in dragStart event the selection is extracted from |
| * viewer and set as drag source in DragSourcePlaceHolder. |
| * |
| * @author Hodaie |
| */ |
| public class UCDragAdapter extends ViewerDragAdapter { |
| |
| /** |
| * Constructor. |
| * |
| * @param viewer The viewer |
| */ |
| public UCDragAdapter(Viewer viewer) { |
| super(viewer); |
| |
| } |
| |
| /** |
| * {@inheritDoc} This method extracts the viewer's selection and sets it as drag source in DragSourcePlaceHolder. |
| */ |
| @SuppressWarnings("unchecked") |
| @Override |
| public void dragStart(DragSourceEvent event) { |
| super.dragStart(event); |
| |
| List<Object> dragSource = null; |
| ISelection sel = viewer.getSelection(); |
| if (sel instanceof IStructuredSelection) { |
| IStructuredSelection ssel = (IStructuredSelection) sel; |
| dragSource = ssel.toList(); |
| } |
| |
| DragSourcePlaceHolder.setDragSource(dragSource); |
| |
| } |
| |
| } |