| /****************************************************************************** |
| * Copyright (c) 2005 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| ****************************************************************************/ |
| |
| package org.eclipse.gmf.runtime.diagram.ui.internal.parts; |
| |
| import org.eclipse.gef.EditPartViewer; |
| import org.eclipse.gef.Tool; |
| import org.eclipse.gef.dnd.TemplateTransferDragSourceListener; |
| import org.eclipse.gmf.runtime.diagram.ui.internal.services.palette.PaletteToolEntry; |
| import org.eclipse.gmf.runtime.diagram.ui.tools.CreationTool; |
| |
| /** |
| * Allows a single palette entry with a creation tool to be dragged from an |
| * EditPartViewer. The palette entry must be a |
| * {@link org.eclipse.gmf.runtime.diagram.ui.internal.services.palette.PaletteToolEntry} |
| * that uses a {@link org.eclipse.gmf.runtime.diagram.ui.tools.CreationTool}. |
| * |
| * @see org.eclipse.gmf.runtime.diagram.ui.internal.parts.PaletteToolTransferDropTargetListener |
| * @see org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditorWithFlyOutPalette |
| * |
| * @author cmahoney |
| */ |
| public class PaletteToolTransferDragSourceListener |
| extends TemplateTransferDragSourceListener { |
| |
| /** |
| * Constructs a listener on the specified viewer. |
| * |
| * @param viewer |
| */ |
| public PaletteToolTransferDragSourceListener(EditPartViewer viewer) { |
| super(viewer); |
| } |
| |
| protected Object getTemplate() { |
| Object template = super.getTemplate(); |
| if (template instanceof PaletteToolEntry) { |
| Tool tool = ((PaletteToolEntry) template).createTool(); |
| if (tool instanceof CreationTool) { |
| return template; |
| } |
| } |
| return null; |
| } |
| |
| } |