/* $Id: ActionAddExistingNodes.java 17865 2010-01-12 20:45:26Z linus $

  *****************************************************************************

  * Copyright (c) 2009 Contributors - see below

  * 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:

  *    bobtarling

  *****************************************************************************

  *

  * Some portions of this file was previously release using the BSD License:

  */

 // Copyright (c) 2006-2008 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.Point;

 import java.awt.event.ActionEvent;

 import java.util.Collection;

 import org.argouml.i18n.Translator;

 import org.argouml.model.Model;

 import org.argouml.ui.targetmanager.TargetManager;

 import org.argouml.uml.diagram.ArgoDiagram;

 import org.argouml.uml.diagram.DiagramUtils;

 import org.tigris.gef.base.Editor;

 import org.tigris.gef.base.Globals;

 import org.tigris.gef.graph.GraphModel;

 import org.tigris.gef.graph.MutableGraphModel;

 import org.argouml.ui.UndoableAction;

 /**

 * ActionAddExistingNodes enables pasting of existing nodes into a Diagram.

 *

 * @author Thomas Neustupny

 */

 public class ActionAddExistingNodes extends UndoableAction {

     /**

      * The UML objects to be added to the diagram.

      */

     private Collection objects;

     /**

      * The Constructor.

      *

      * @param name the localized name of the action

      * @param coll the UML objects to be added

      */

     public ActionAddExistingNodes(String name, Collection coll) {

         super(name);

         objects = coll;

     }

     /*

      * @see javax.swing.Action#isEnabled()

      */

     @Override

     public boolean isEnabled() {

         ArgoDiagram dia = DiagramUtils.getActiveDiagram();

         if (dia == null) {

             return false;

         }

         MutableGraphModel gm = (MutableGraphModel) dia.getGraphModel();

         for (Object o : objects) {

             if (gm.canAddNode(o)) {

                 return true;

             }

         }

         return false;

     }

     @Override

     public void actionPerformed(ActionEvent ae) {

         super.actionPerformed(ae);

         Editor ce = Globals.curEditor();

         GraphModel gm = ce.getGraphModel();

         if (!(gm instanceof MutableGraphModel)) {

             return;

         }

         String instructions =

             Translator.localize(

                 "misc.message.click-on-diagram-to-add");

         Globals.showStatus(instructions);

         final ModeAddToDiagram placeMode = new ModeAddToDiagram(

                 objects,

                 instructions);

         Globals.mode(placeMode, false);

     }

     /**

      * @param modelElements the modelelements to add Nodes for

      * @param location the point where to drop the node.

      *               Also <code>null</code> is acceptable.

      * @param diagram the diagram to add the nodes to

      */

     public static void addNodes(Collection modelElements, 

             Point location, ArgoDiagram diagram) {

         MutableGraphModel gm = (MutableGraphModel) diagram.getGraphModel();

         Collection oldTargets = TargetManager.getInstance().getTargets();

         int count = 0;

         for (Object me : modelElements) {

             if (diagram instanceof UMLDiagram 

                     && ((UMLDiagram) diagram).doesAccept(me)) {

                 ((UMLDiagram) diagram).drop(me, location);

             } else if (Model.getFacade().isANaryAssociation(me)) {

                 AddExistingNodeCommand cmd =

                     new AddExistingNodeCommand(me, location,

                             count++);

                 cmd.execute();

             } else if (Model.getFacade().isAUMLElement(me)) {

                 if (gm.canAddEdge(me)) {

                     gm.addEdge(me);

                     // TODO: An AssociationClass should be possible to add

                     // as a side effect of adding a node and its related

                     // edges, but that doesn't work as things are currently

                     // structured. - tfm 20061208

                     if (Model.getFacade().isAAssociationClass(me)) {

                         ModeCreateAssociationClass.buildInActiveLayer(

                                 Globals.curEditor(), 

                                 me);

                     }

                 } else if (gm.canAddNode(me)) {

                     AddExistingNodeCommand cmd =

                         new AddExistingNodeCommand(me, location,

                                 count++);

                     cmd.execute();

                 }

             }

         }

         TargetManager.getInstance().setTargets(oldTargets);

     }

 }