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/*
 * $Id: StreamTextArea.java 3117 2008-01-31 05:53:22Z xlv $
 *
 * Copyright 2007 Bruno Lowagie.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package com.lowagie.rups.view.itext;

import com.lowagie.rups.io.TextAreaOutputStream;
import com.lowagie.text.pdf.PRStream;
import com.lowagie.text.pdf.PdfObject;
import com.lowagie.text.pdf.PdfReader;
import java.io.IOException;
import java.util.Observable;
import java.util.Observer;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class StreamTextArea extends JScrollPane implements Observer {

    /**
     * a serial version id.
     */
    private static final long serialVersionUID = 1302283071087762494L;
    /**
     * The text area with the content stream.
     */
    protected JTextArea text;

    /**
     * Constructs a StreamTextArea.
     */
    public StreamTextArea() {
        super();
        text = new JTextArea();
        setViewportView(text);
    }

    /**
     * @see java.util.Observer#update(java.util.Observable, java.lang.Object)
     */
    public void update(Observable observable, Object obj) {
        text.setText(null);
    }

    /**
     * Renders the content stream of a PdfObject or empties the text area.
     *
     * @param object the object of which the content stream needs to be rendered
     */
    public void render(PdfObject object) {
        if (object instanceof PRStream) {
            PRStream stream = (PRStream) object;
            try {
                TextAreaOutputStream taos = new TextAreaOutputStream(text);
                taos.write(PdfReader.getStreamBytes(stream));
                //text.addMouseListener(new StreamEditorAction(stream));
            } catch (IOException e) {
                text.setText("The stream could not be read: " + e.getMessage());
            }
        } else {
            update(null, null);
            return;
        }
        text.repaint();
        repaint();
    }

}