// $Id: UMLExpressionBodyField.java,v 1.16 2004/09/14 20:12:16 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,
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package org.argouml.uml.ui;
import javax.swing.JTextArea;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

import org.apache.log4j.Logger;

import ru.novosoft.uml.MElementEvent;

/**
 * @deprecated as of ArgoUml 0.13.5 (10-may-2003), because it depends on
 * {@link org.argouml.uml.ui.UMLExpressionModel}.
 * TODO: What is this replaced by?
 * This class is part of the 'old'(pre 0.13.*) implementation of proppanels
 * that used reflection a lot.
 */
public class UMLExpressionBodyField
    extends JTextArea
    implements DocumentListener, UMLUserInterfaceComponent {

    /**
     * @deprecated by Linus Tolke as of 0.15.4. Use your own logger in your
     * class. This will be removed.
     */
    private static final Logger LOG = 
        Logger.getLogger(UMLExpressionBodyField.class);

    private UMLExpressionModel2 model;
    private boolean notifyModel;
    
    /**
     * The constructor.
     * 
     * @param m Expression model, should be shared between
     * Language and Body fields
     * @param n Only one of Language and Body fields should
     * forward events to model
     */
    public UMLExpressionBodyField(UMLExpressionModel2 m,
				  boolean n) {
        model = m;
        notifyModel = n;
        getDocument().addDocumentListener(this);       
    }

    /**
     * @see org.argouml.uml.ui.UMLUserInterfaceComponent#targetChanged()
     */
    public void targetChanged() {
	LOG.debug("UMLExpressionBodyField: targetChanged");
	if (notifyModel) model.targetChanged();
        update();
    }

    /**
     * @see org.argouml.uml.ui.UMLUserInterfaceComponent#targetReasserted()
     */
    public void targetReasserted() {
    }
    
    /**
     * @see ru.novosoft.uml.MElementListener#roleAdded(ru.novosoft.uml.MElementEvent)
     */
    public void roleAdded(final MElementEvent p1) {
    }

    /**
     * @see ru.novosoft.uml.MElementListener#recovered(ru.novosoft.uml.MElementEvent)
     */
    public void recovered(final MElementEvent p1) {
    }

    /**
     * @see ru.novosoft.uml.MElementListener#roleRemoved(ru.novosoft.uml.MElementEvent)
     */
    public void roleRemoved(final MElementEvent p1) {
    }

    /**
     * @see ru.novosoft.uml.MElementListener#listRoleItemSet(ru.novosoft.uml.MElementEvent)
     */
    public void listRoleItemSet(final MElementEvent p1) {
    }

    /**
     * @see ru.novosoft.uml.MElementListener#removed(ru.novosoft.uml.MElementEvent)
     */
    public void removed(final MElementEvent p1) {
    }

    /**
     * @see ru.novosoft.uml.MElementListener#propertySet(ru.novosoft.uml.MElementEvent)
     */
    public void propertySet(final MElementEvent event) {
       	LOG.debug("UMLExpressionBodyField: propertySet" + event);
    }
    
    private void update() {
        String oldText = getText();
        Object newText = model.getBody();
	LOG.debug("UMLExpressionBodyField: update: " + oldText + " " + newText);

	if (oldText == null || newText == null || !oldText.equals(newText)) {
            if (oldText != newText) {
		LOG.debug("setNewText!!");
                setText((String) newText);
            }
        }
    }
    
    /**
     * @see javax.swing.event.DocumentListener#changedUpdate(javax.swing.event.DocumentEvent)
     */
    public void changedUpdate(final DocumentEvent p1) {
        model.setBody(getText());
    }
    
    /**
     * @see javax.swing.event.DocumentListener#removeUpdate(javax.swing.event.DocumentEvent)
     */
    public void removeUpdate(final DocumentEvent p1) {
        model.setBody(getText());
    }
    
    /**
     * @see javax.swing.event.DocumentListener#insertUpdate(javax.swing.event.DocumentEvent)
     */
    public void insertUpdate(final DocumentEvent p1) {
        model.setBody(getText());
    }
}