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The source code// $Id: ActionCut.java,v 1.13 2004/08/16 19:30:57 mvw Exp $ // Copyright (c) 1996-2004 The Regents of the University of California. All // Rights Reserved. Permission to use, copy, modify, and distribute this // software and its documentation without fee, and without a written // agreement is hereby granted, provided that the above copyright notice // and this paragraph appear in all copies. This software program and // documentation are copyrighted by The Regents of the University of // California. The software program and documentation are supplied "AS // IS", without any accompanying services from The Regents. The Regents // does not warrant that the operation of the program will be // uninterrupted or error-free. The end-user understands that the program // was developed for research purposes and is advised not to rely // exclusively on the program for any reason. IN NO EVENT SHALL THE // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, // SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, // ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF // THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF // SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE // PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF // CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, // UPDATES, ENHANCEMENTS, OR MODIFICATIONS. package org.argouml.uml.ui; import java.awt.Toolkit; import java.awt.datatransfer.DataFlavor; import java.awt.datatransfer.Transferable; import java.awt.datatransfer.UnsupportedFlavorException; import java.awt.event.ActionEvent; import java.io.IOException; import java.util.Collection; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.Icon; import javax.swing.event.CaretEvent; import javax.swing.event.CaretListener; import javax.swing.text.JTextComponent; import org.argouml.application.helpers.ResourceLoaderWrapper; import org.argouml.i18n.Translator; import org.tigris.gef.base.CmdCut; import org.tigris.gef.base.Globals; /** @stereotype singleton */ public class ActionCut extends AbstractAction implements CaretListener { private static ActionCut instance = new ActionCut(); private static final String LOCALIZE_KEY = "action.cut"; //////////////////////////////////////////////////////////////// // constructors private ActionCut() { super(Translator.localize(LOCALIZE_KEY)); Icon icon = ResourceLoaderWrapper .lookupIconResource( Translator.getImageBinding(LOCALIZE_KEY), Translator.localize(LOCALIZE_KEY)); if (icon != null) { putValue(Action.SMALL_ICON, icon); } putValue( Action.SHORT_DESCRIPTION, Translator.localize(LOCALIZE_KEY) + " "); } /** * @return the singleton */ public static ActionCut getInstance() { return instance; } private JTextComponent textSource; /** * Cuts some text or a fig * * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent) */ public void actionPerformed(ActionEvent ae) { if (textSource == null) { CmdCut cmd = new CmdCut(); cmd.doIt(); } else { textSource.cut(); } if (isSystemClipBoardEmpty() && Globals.clipBoard == null || Globals.clipBoard.isEmpty()) { ActionPaste.getInstance().setEnabled(false); } else { ActionPaste.getInstance().setEnabled(true); } } /** * @see * javax.swing.event.CaretListener#caretUpdate(javax.swing.event.CaretEvent) */ public void caretUpdate(CaretEvent e) { if (e.getMark() != e.getDot()) { // there is a selection setEnabled(true); textSource = (JTextComponent) e.getSource(); } else { Collection figSelection = Globals.curEditor().getSelectionManager().selections(); if (figSelection == null || figSelection.isEmpty()) { setEnabled(false); } else setEnabled(true); textSource = null; } } private boolean isSystemClipBoardEmpty() { // if there is a selection on the clipboard boolean hasContents = false; Transferable content = Toolkit.getDefaultToolkit().getSystemClipboard().getContents(null); DataFlavor[] flavors = content.getTransferDataFlavors(); try { for (int i = 0; i < flavors.length; i++) { if (content.getTransferData(flavors[i]) != null) { hasContents = true; break; } } } catch (UnsupportedFlavorException ignorable) { } catch (IOException ignorable) { } return !hasContents; } } /* end class ActionCut */ |
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