// $Id: ActionAddObject.java,v 1.5 2004/09/09 18:07:17 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
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// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
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package org.argouml.uml.diagram.sequence.ui;

import org.argouml.model.ModelFacade;
import org
    .argouml
    .model
    .uml
    .behavioralelements
    .collaborations
    .CollaborationsFactory;
import org.argouml.ui.CmdCreateNode;
import org.argouml.uml.diagram.sequence.SequenceDiagramGraphModel;
import org.tigris.gef.base.Editor;
import org.tigris.gef.base.Globals;
import org.tigris.gef.graph.GraphModel;

import ru.novosoft.uml.behavior.common_behavior.MObject;

/**
 * Action to add an object to a sequence diagram.
 *
 * @author jaap.branderhorst@xs4all.nl
 * @since Aug 11, 2003
 */
public class ActionAddObject extends CmdCreateNode {

    /**
     * The constructor.
     * 
     */
    public ActionAddObject() {
        super(MObject.class, false, "Object");
    }

    /**
     * @see org.tigris.gef.graph.GraphFactory#makeNode()
     */
    public Object makeNode() {
        Object node = super.makeNode();
        Editor ce = Globals.curEditor();
        GraphModel gm = ce.getGraphModel();
        if (gm instanceof SequenceDiagramGraphModel) {
            SequenceDiagramGraphModel sgm = (SequenceDiagramGraphModel) gm;
            Object clasrole =
                CollaborationsFactory.getFactory().buildClassifierRole(
                    sgm.getCollaboration());
            ModelFacade.addInstance(clasrole, node);            
        } else {
            throw new IllegalStateException("Graphmodel is not a "
					    + "sequence diagram graph model");
        }
        return node;
    }

}