// $Id: ActionBooleanTaggedValue.java,v 1.3 2004/08/24 06:33:45 linus Exp $
// Copyright (c) 2003-2004 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
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// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

package org.argouml.uml.ui;

import java.awt.event.ActionEvent;

import org.argouml.model.ModelFacade;
import org.argouml.model.uml.UmlFactory;

/**
 * An action which can be used to create arbritary tagged values which hold
 * boolean data. It is designed (and implicitly) relies on a UMLCheckBox2.
 * 
 * @see UMLCheckBox2
 * @author mkl
 *  
 */
public class ActionBooleanTaggedValue extends UMLChangeAction {

    private String tagName;

    /**
     * The constructor takes the name of the tagged value as a string, which
     * will hold boolean data.
     * 
     * @param theTagName
     *            the name of the taggedvalue containing boolean values.
     */
    public ActionBooleanTaggedValue(String theTagName) {
        super("Set", NO_ICON);
        tagName = theTagName;
    }

    /**
     * set the taggedvalue according to the condition of the checkbox. The
     * taggedvalue will be created if not existing.
     * 
     * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
     */
    public void actionPerformed(ActionEvent e) {
        super.actionPerformed(e);
        if (!(e.getSource() instanceof UMLCheckBox2)) {
            return;
        }

        UMLCheckBox2 source = (UMLCheckBox2) e.getSource();
        Object obj = source.getTarget();

        if (!ModelFacade.isAModelElement(obj)) {
            return;
        }

        boolean newState = source.isSelected();

        Object taggedValue = ModelFacade.getTaggedValue(obj, tagName);
        if (taggedValue == null) {
            taggedValue = UmlFactory.getFactory().getExtensionMechanisms()
                    .createTaggedValue();
            ModelFacade.setTag(taggedValue, tagName);
            ModelFacade.addTaggedValue(obj, taggedValue);
        }
        if (newState) {
            ModelFacade.setValue(taggedValue, "true");
        } else {
            ModelFacade.setValue(taggedValue, "false");
        }
    }
}