Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/core/propertypanels/ui/UMLExpressionBodyField.java
// $Id: UMLExpressionBodyField.java 15604 2008-08-23 14:05:57Z penyaskito $
// Copyright (c) 1996-2008 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
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package org.argouml.core.propertypanels.ui;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.swing.JTextArea;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

import org.apache.log4j.Logger;
import org.argouml.i18n.Translator;
import org.argouml.ui.LookAndFeelMgr;

/**
 * This text field shows the body of a UML expression.
 *
 */
class UMLExpressionBodyField extends JTextArea
    implements DocumentListener {

    /**
     * Logger.
     */
    private static final Logger LOG =
        Logger.getLogger(UMLExpressionBodyField.class);

    private UMLExpressionModel model;
    private boolean notifyModel;

    /**
     * The constructor.
     * 
     * @param expressionModel
     *            Expression model, should be shared between Language and Body
     *            fields
     * @param notify
     *            Set to true to forward events to model. Only one of Language
     *            and Body fields should have this set to true.
     */
    public UMLExpressionBodyField(UMLExpressionModel expressionModel,
				  boolean notify) {
        model = expressionModel;
        notifyModel = notify;
        getDocument().addDocumentListener(this);
        setToolTipText(Translator.localize("label.body.tooltip"));
        setFont(LookAndFeelMgr.getInstance().getStandardFont());
        setRows(2); // make it stretch vertically
        
        update();
    }

    private void update() {
        String oldText = getText();
        String newText = model.getBody();

        if (oldText == null || newText == null || !oldText.equals(newText)) {
            if (oldText != newText) {
                setText(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());
    }
}
