| /****************************************************************************** |
| * 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.render.util; |
| |
| import org.eclipse.swt.dnd.Transfer; |
| |
| import org.eclipse.gmf.runtime.common.ui.action.actions.global.ClipboardContentsHelper; |
| import org.eclipse.gmf.runtime.common.ui.util.CustomDataTransfer; |
| import org.eclipse.gmf.runtime.common.ui.util.ICustomData; |
| import org.eclipse.gmf.runtime.diagram.ui.render.clipboard.AWTClipboardHelper; |
| |
| /** |
| * A specialized <code>ClipboardContentsHelper</code> that supports images in |
| * the clipboard. |
| * |
| * <p> |
| * This is only supported on Windows |
| * {@link org.eclipse.gmf.runtime.diagram.ui.render.clipboard.AWTClipboardHelper}. |
| * </p> |
| * |
| * @author cmahoney |
| */ |
| public class ImageClipboardContentsHelper |
| extends ClipboardContentsHelper { |
| |
| /** |
| * The singleton instance of <code>ClipboardContentsHelper</code>. |
| */ |
| private static ClipboardContentsHelper instance; |
| |
| /** |
| * Retrieves the singleton instance of <code>ClipboardContentsHelper</code>. |
| * |
| * @return the singleton instance of <code>ClipboardContentsHelper</code> |
| */ |
| public static ClipboardContentsHelper getInstance() { |
| if (instance == null) { |
| instance = new ImageClipboardContentsHelper(); |
| } |
| return instance; |
| } |
| |
| /** |
| * Creates a new instance. |
| */ |
| protected ImageClipboardContentsHelper() { |
| // nothing to initialize |
| } |
| |
| /** |
| * Returns the system clipboard contents with image support. |
| */ |
| public Object getClipboardContents(Transfer dataType) { |
| Object data = super.getClipboardContents(dataType); |
| |
| if ((data == null) |
| && (CustomDataTransfer.getInstance().equals(dataType)) |
| && (AWTClipboardHelper.getInstance().isImageCopySupported())) { |
| data = AWTClipboardHelper.getInstance().getCustomData(); |
| if (data instanceof ICustomData) { |
| data = new ICustomData[] {(ICustomData) data}; |
| } |
| } |
| |
| return data; |
| } |
| } |