| /******************************************************************************* |
| * Copyright (c) 2010 BSI Business Systems Integration AG. |
| * 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: |
| * BSI Business Systems Integration AG - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.scout.sdk.ui.extensions; |
| |
| import java.util.EventListener; |
| |
| import org.eclipse.jface.util.LocalSelectionTransfer; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.swt.dnd.DND; |
| import org.eclipse.swt.dnd.DragSourceEvent; |
| |
| /** |
| * <h3>IDragSourceDelegator</h3> This class is registered by the extension |
| */ |
| public interface IDragSourceDelegator extends EventListener { |
| |
| /** |
| * will be called of the Outline. If returned true the {@link IDragSourceDelegator#dragSetData(DragSourceEvent)} and |
| * {@link IDragSourceDelegator#dragFinished(DragSourceEvent)} method of this delegater will be called. If false |
| * is returned this delegator will not be considered during the current drag and drop event. |
| * |
| * @param event |
| * @return |
| */ |
| boolean acceptDrag(DragSourceEvent event, TreeViewer outline); |
| |
| /** |
| * the method sets the data of the event. {@link DragSourceEvent#data}. Aware the data is an instance of a |
| * {@link LocalSelectionTransfer}. |
| * |
| * @param event |
| */ |
| void dragSetData(DragSourceEvent event, TreeViewer outline); |
| |
| /** |
| * use this method to clean up some dragged items. The {@link DragSourceEvent#detail} gives information about the |
| * drag type see {@link DND#DROP_COPY}... |
| * |
| * @param event |
| */ |
| void dragFinished(DragSourceEvent event, TreeViewer outline); |
| } |