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Source Code of DocViewer$DocViewerChangeListener

/*************************************************************************
*
*  $RCSfile: DocViewer.java,v $
*
*  $Revision: 1.3 $
*
*  last change: $Author: hr $ $Date: 2003/06/30 15:29:48 $
*
*  The Contents of this file are made available subject to the terms of
*  the BSD license.
*  Copyright (c) 2003 by Sun Microsystems, Inc.
*  All rights reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*  1. Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*  2. Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*  3. Neither the name of Sun Microsystems, Inc. nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
*  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
*  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
*  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
*  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
*  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
*  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
*  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
*  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
*  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*    
*************************************************************************/

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.File;

import com.sun.star.beans.LocalOfficeConnection;

public class DocViewer
{
  private Frame frame = null;
  private JTextField currentSelection = null;
  private OfficeWriter mOfficeWriter = null;

  private void initBean()
  {
    if (mOfficeWriter == null)
    {
      mOfficeWriter = new OfficeWriter();
      mOfficeWriter.setOfficeConnection(new LocalOfficeConnection());
      mOfficeWriter.addSelectionChangeListener(new DocViewerChangeListener());
      frame.add(mOfficeWriter, BorderLayout.CENTER);
    }
  }

  private void initUI()
  {
    frame = new Frame();
    frame.setTitle( "OfficeWriterBean demo" );
    frame.setLayout(new BorderLayout());

    JButton newDocButton = new JButton("New");
    newDocButton.setPreferredSize(new Dimension(100, 30));
    newDocButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        createDocument(evt);
      }
    });

    JButton loadDocButton = new JButton("Open");
    loadDocButton.setPreferredSize(new Dimension(100, 30));
    loadDocButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        loadDocument(evt);
      }
    });

    JButton hideDocButton = new JButton("Hide");
    hideDocButton.setPreferredSize(new Dimension(100, 30));
    hideDocButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        mOfficeWriter.hide();
      }
    });

    JButton showDocButton = new JButton("Show");
    showDocButton.setPreferredSize(new Dimension(100, 30));
    showDocButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        mOfficeWriter.show();
      }
    });

    currentSelection = new JTextField();
    currentSelection.setPreferredSize(new Dimension(200, 30));
    currentSelection.setEditable(false);

    Panel p = new Panel();
    p.add(newDocButton);
    p.add(loadDocButton);
    p.add(hideDocButton);
    p.add(showDocButton);
    p.add(currentSelection);

    frame.add(p, BorderLayout.SOUTH);
    frame.addWindowListener(new ExitListener());
    frame.setSize(500, 500);
    frame.show();
  }

  private void createDocument(ActionEvent evt)
  {
    initBean();

    try {
      mOfficeWriter.load(OfficeWriter.NEW_DOCUMENT);
    }
    catch (Exception e) {
      e.printStackTrace(System.err);
    }
    mOfficeWriter.setObjectBarVisible(false);
  }

  private JFileChooser fc = null;

  private void loadDocument(ActionEvent evt)
  {
    if (fc == null)
      fc = new JFileChooser();

    int returnVal = fc.showOpenDialog((Component)evt.getSource());
    if (returnVal == JFileChooser.APPROVE_OPTION)
    {
      initBean();

      File file = fc.getSelectedFile();

      try {
        if (file.exists())
          mOfficeWriter.load(file.toURL().toString());
        else
          mOfficeWriter.load(OfficeWriter.NEW_DOCUMENT);
      }
      catch (Exception e) {
        e.printStackTrace(System.err);
      }
      mOfficeWriter.setObjectBarVisible(false);
    }
  }

  public static void main(String[] args)
  {
    DocViewer dv = new DocViewer();
    dv.initUI();
  }

  class ExitListener extends WindowAdapter
  {
    public void windowClosed(WindowEvent e)
    {
      if (mOfficeWriter != null)
        mOfficeWriter.closeConnection();
      System.exit(0);
    }

    public void windowClosing(WindowEvent e)
    {
      ((Window)e.getSource()).dispose();
    }
  }

  class DocViewerChangeListener implements ChangeListener
  {
    public void stateChanged(ChangeEvent event)
    {
      String s = mOfficeWriter.getSelection();
      currentSelection.setText(s);
    }
  }
}
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