texteditorpanel.java

Vyger offers a D & D and Rogue-like environment in a graphical online roleplay game.

/*
 * Light And Shadow. A Persistent Universe based on Robert Jordan's Wheel of Time Books.
 * Copyright (C) 2001-2002 WOTLAS Team
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package wotlas.common;

import wotlas.libs.aswing.*;
import wotlas.utils.Debug;
import wotlas.utils.FileTools;

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

/** To display a text file in a JPanel with Save & Load buttons.
 *
 * @author Aldiss
 */

public class TextEditorPanel extends JPanel {

 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

   /** Our File Path.
    */
    protected String textFilePath;

   /** Original text, not modified...
    */
    protected String originalText;

   /** ATextField
    */
    protected ATextArea a_text;

 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

   /** Constructor with full file path.
    * @param rManager resource manager to get the images
    * @param textFilePath text file path
    * @param title title
    * @param canSave can we modify/save the file ?
    */
    public TextEditorPanel( ResourceManager rManager, String textFilePath, String title,
                            boolean canSave ) {
    	super();
        this.textFilePath = textFilePath;

      // Components
        setLayout(new BorderLayout());
        setBackground(Color.white);
        setBorder(BorderFactory.createEmptyBorder(5,10,0,10));

        ALabel atitle = new ALabel(title);
        atitle.setBackground(Color.white);
        add( atitle, BorderLayout.NORTH );
        atitle.setBorder(BorderFactory.createEmptyBorder(5,0,5,0));

        a_text = new ATextArea();
        a_text.setLineWrap(true);
        a_text.setWrapStyleWord(true);
        a_text.setEditable(canSave);

        if(canSave)
           a_text.setBackground( new Color(235,235,235) );
        else
           a_text.setBackground( new Color(215,215,215) );

        JScrollPane scroller = new JScrollPane( a_text );
        scroller.setPreferredSize(new Dimension(450,280));
        add( scroller, BorderLayout.CENTER );

        JPanel buttonPanel = new JPanel();

        if(canSave)
           buttonPanel.setLayout(new GridLayout(1,2,10,10));
        else
           buttonPanel.setLayout(new GridLayout(1,1,10,10));

        buttonPanel.setBackground(Color.white);

        ImageIcon im_loadup = rManager.getImageIcon("load-up.gif");
        ImageIcon im_loaddo   = rManager.getImageIcon("load-do.gif");

         JButton bLoad = new JButton(im_loadup);
         bLoad.setRolloverIcon(im_loaddo);
         bLoad.setPressedIcon(im_loaddo);   
         bLoad.setBorderPainted(false);
         bLoad.setContentAreaFilled(false);
         bLoad.setFocusPainted(false);
         buttonPanel.add(bLoad);

          bLoad.addActionListener(new ActionListener() {
              public void actionPerformed (ActionEvent e) {
                  load();
              }
          });

        if(canSave) {
          ImageIcon im_saveup = rManager.getImageIcon("save-up.gif");
          ImageIcon im_savedo   = rManager.getImageIcon("save-do.gif");

          JButton bSave = new JButton(im_saveup);
          bSave.setRolloverIcon(im_savedo);
          bSave.setPressedIcon(im_savedo);   
          bSave.setBorderPainted(false);
          bSave.setContentAreaFilled(false);
          bSave.setFocusPainted(false);

          bSave.addActionListener(new ActionListener() {
              public void actionPerformed (ActionEvent e) {
                  save();
              }
          });

          buttonPanel.add(bSave);
        }

        add(buttonPanel, BorderLayout.SOUTH );

      // We init the content
         load();
    }

 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

  /** To load the text
   */
    public boolean load() {
        String text = FileTools.loadTextFromFile( textFilePath );
        
        if(text==null) {
           JOptionPane.showMessageDialog(null,"Failed to load "+textFilePath,"Error",JOptionPane.ERROR_MESSAGE);

           if(originalText==null) {
              text="[Error: failed To load file : "+textFilePath+"]";
              a_text.setText( text );
           }

           a_text.setEnabled(false);
           return false;
        }
        else {
           if(originalText!=null && !originalText.equals(a_text.getText())){
              int value = JOptionPane.showConfirmDialog( null, "The current text will be erased.\nDo you want to continue ?",
                                                       "Load", JOptionPane.YES_NO_OPTION);

              if( value != JOptionPane.YES_OPTION )
                  return false;
           }
           
           originalText = text;
           a_text.setText( text );
           a_text.setEnabled( true );
           return true;
        }
    }

 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

  /** To save the text
   */
    public boolean save() {
        if(!a_text.isEnabled()) {
           JOptionPane.showMessageDialog(null,"Save not allowed.","Error",JOptionPane.ERROR_MESSAGE);
           return false;
        }
        
        boolean res = FileTools.saveTextToFile( textFilePath, a_text.getText() );
        
        if(res)
            JOptionPane.showMessageDialog(null,"File saved","Success",JOptionPane.INFORMATION_MESSAGE);
        else
            JOptionPane.showMessageDialog(null,"Failed to save file","Error",JOptionPane.ERROR_MESSAGE);

        return res;
    }

 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

   /** To get the current text displayed in this editor.
    */
    public String getText() {
        if(!a_text.isEnabled())
           return null;
        
        return a_text.getText();
    }

 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

   /** To set the current text displayed in this editor.
    */
    public void setText(String text) {
        originalText = text;
        a_text.setText( text );
        a_text.setEnabled( true );
    }

 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

}