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The source code// $Id: ActionDeleteFromDiagram.java,v 1.9 2004/09/29 17:02:52 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.diagram.ui; import java.awt.event.ActionEvent; import java.util.Vector; import javax.swing.Action; import org.apache.log4j.Logger; import org.argouml.i18n.Translator; import org.argouml.ui.targetmanager.TargetManager; import org.argouml.uml.ui.UMLChangeAction; import org.tigris.gef.base.Editor; import org.tigris.gef.base.Globals; import org.tigris.gef.presentation.Fig; import org.argouml.uml.diagram.state.ui.UMLStateDiagram; import org.argouml.kernel.ProjectManager; /** deletes an modelelement from the diagram, but not from the model. * @stereotype singleton */ public class ActionDeleteFromDiagram extends UMLChangeAction { //////////////////////////////////////////////////////////////// // static variables /** logger */ private static final Logger LOG = Logger.getLogger(ActionDeleteFromDiagram.class); private static ActionDeleteFromDiagram singleton = new ActionDeleteFromDiagram(); //////////////////////////////////////////////////////////////// // constructors private ActionDeleteFromDiagram() { super("action.remove-from-diagram"); String localMnemonic = Translator.localize("action.remove-from-diagram.mnemonic"); if (localMnemonic != null && localMnemonic.length() == 1) { putValue(Action.MNEMONIC_KEY, new Integer(localMnemonic.charAt(0))); } } //////////////////////////////////////////////////////////////// // main methods /** * Tells if this action shall be enabled or not. * * Remove from diagram is not allowed when the diagram * is a statechart. This because the diagram = the * statemachine according UML. Use a submachinestate * to split a big diagram in parts instead. * And because it leads to unsolvable problems with * concurrency. * * @return true if it shall be enabled. */ public boolean shouldBeEnabled() { super.shouldBeEnabled(); int size = 0; // return false if current diagram is a statechart diagram Object targetP = ProjectManager.getManager() .getCurrentProject().getActiveDiagram(); if (targetP instanceof UMLStateDiagram) return false; try { Editor ce = Globals.curEditor(); if (ce == null) { return false; } if (ce.getSelectionManager() == null) { return false; } Vector figs = ce.getSelectionManager().getFigs(); size = figs.size(); } catch (Exception e) { LOG.error("could not determine number of figs", e); } return size > 0; } /** * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent) */ public void actionPerformed(ActionEvent ae) { int size = 0; try { Editor ce = Globals.curEditor(); Vector figs = ce.getSelectionManager().getFigs(); size = figs.size(); for (int i = 0; i < size; i++) { Fig f = (Fig) figs.elementAt(i); f.removeFromDiagram(); TargetManager.getInstance().removeHistoryElement(f); } } catch (Exception ex) { LOG.error( ex); } } /** * @return Returns the singleton. */ public static ActionDeleteFromDiagram getSingleton() { return singleton; } } |
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