| /* TransferHandler.java -- |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing; |
| |
| import java.awt.datatransfer.Clipboard; |
| import java.awt.datatransfer.DataFlavor; |
| import java.awt.datatransfer.Transferable; |
| import java.awt.event.ActionEvent; |
| import java.awt.event.InputEvent; |
| import java.io.Serializable; |
| |
| public class TransferHandler implements Serializable |
| { |
| static class TransferAction extends AbstractAction |
| { |
| private String command; |
| |
| public TransferAction(String command) |
| { |
| this.command = command; |
| } |
| |
| public void actionPerformed(ActionEvent event) |
| { |
| JComponent component = (JComponent) event.getSource(); |
| TransferHandler transferHandler = component.getTransferHandler(); |
| Clipboard clipboard = getClipboard(component); |
| |
| if (command.equals(COMMAND_COPY)) |
| transferHandler.exportToClipboard(component, clipboard, COPY); |
| else if (command.equals(COMMAND_CUT)) |
| transferHandler.exportToClipboard(component, clipboard, MOVE); |
| else if (command.equals(COMMAND_PASTE)) |
| { |
| Transferable transferable = clipboard.getContents(null); |
| |
| if (transferable != null) |
| transferHandler.importData(component, transferable); |
| } |
| } |
| |
| private static Clipboard getClipboard(JComponent component) |
| { |
| SecurityManager sm = System.getSecurityManager(); |
| |
| if (sm != null) |
| { |
| try |
| { |
| sm.checkSystemClipboardAccess(); |
| |
| // We may access system clipboard. |
| return component.getToolkit().getSystemClipboard(); |
| } |
| catch (SecurityException e) |
| { |
| // We may not access system clipboard. |
| } |
| } |
| |
| // Create VM-local clipboard if non exists yet. |
| if (clipboard == null) |
| clipboard = new Clipboard("Clipboard"); |
| |
| return clipboard; |
| } |
| } |
| |
| private static final long serialVersionUID = -7908749299918704233L; |
| |
| private static final String COMMAND_COPY = "copy"; |
| private static final String COMMAND_CUT = "cut"; |
| private static final String COMMAND_PASTE = "paste"; |
| |
| public static final int NONE = 0; |
| public static final int COPY = 1; |
| public static final int MOVE = 2; |
| public static final int COPY_OR_MOVE = 3; |
| |
| private static Action copyAction = new TransferAction(COMMAND_COPY); |
| private static Action cutAction = new TransferAction(COMMAND_CUT); |
| private static Action pasteAction = new TransferAction(COMMAND_PASTE); |
| |
| /** |
| * Clipboard if system clipboard may not be used. |
| */ |
| private static Clipboard clipboard; |
| |
| private int sourceActions; |
| private Icon visualRepresentation; |
| |
| public static Action getCopyAction() |
| { |
| return copyAction; |
| } |
| |
| public static Action getCutAction() |
| { |
| return cutAction; |
| } |
| |
| public static Action getPasteAction() |
| { |
| return pasteAction; |
| } |
| |
| protected TransferHandler() |
| { |
| this.sourceActions = NONE; |
| } |
| |
| public TransferHandler(String property) |
| { |
| this.sourceActions = property != null ? COPY : NONE; |
| } |
| |
| public boolean canImport (JComponent c, DataFlavor[] flavors) |
| { |
| return false; |
| } |
| |
| protected Transferable createTransferable(JComponent c) |
| { |
| return null; |
| } |
| |
| public void exportAsDrag (JComponent c, InputEvent e, int action) |
| { |
| } |
| |
| protected void exportDone (JComponent c, Transferable data, int action) |
| { |
| } |
| |
| public void exportToClipboard(JComponent c, Clipboard clip, int action) |
| { |
| } |
| |
| public int getSourceActions (JComponent c) |
| { |
| return sourceActions; |
| } |
| |
| public Icon getVisualRepresentation (Transferable t) |
| { |
| return visualRepresentation; |
| } |
| |
| public boolean importData (JComponent c, Transferable t) |
| { |
| return false; |
| } |
| } |