/*
    *  XNap - A P2P framework and client.
    *
    *  See the file AUTHORS for copyright information.
    *
    *  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.
    *
   *  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 org.xnap.gui;
  
  import java.awt.Component;
  import java.beans.PropertyChangeEvent;
  import java.beans.PropertyChangeListener;
  
  import javax.help.CSH;
  import javax.swing.JOptionPane;
  import javax.swing.JPanel;
  import javax.swing.JTabbedPane;
  
  import org.xnap.XNap;
  import org.xnap.gui.event.DialogSupport;
  import org.xnap.gui.prefs.AdvancedTransferPrefsPanel;
  import org.xnap.gui.prefs.ApplicationPrefsPanel;
  import org.xnap.gui.prefs.ChatAppearancePrefsPanel;
  import org.xnap.gui.prefs.ChatPrefsPanel;
  import org.xnap.gui.prefs.ConfirmPrefsPanel;
  import org.xnap.gui.prefs.ConsoleAppearancePrefsPanel;
  import org.xnap.gui.prefs.FilePrefsPanel;
  import org.xnap.gui.prefs.LookAndFeelPrefsPanel;
  import org.xnap.gui.prefs.NetworkPrefsPanel;
  import org.xnap.gui.prefs.PackagePrefsPanel;
  import org.xnap.gui.prefs.PersonalPrefsPanel;
  import org.xnap.gui.prefs.ProgramPrefsPanel;
  import org.xnap.gui.prefs.ProxyPrefsPanel;
  import org.xnap.gui.prefs.SearchPrefsPanel;
  import org.xnap.gui.prefs.ShortcutPrefsPanel;
  import org.xnap.gui.prefs.TransferPrefsPanel;
  import org.xnap.gui.util.*;
  import org.xnap.util.Preferences;
  
  /***
   * Provides the global preferences dialog.
   */
  public class PreferencesDialog extends AbstractPreferencesDialog
      implements PropertyChangeListener {
      
      //--- Data field(s) ---
  
      /***
       * Used to store dialog listeners.
       */
      private static DialogSupport listeners = new DialogSupport();
      private static PreferencesDialog me = null;
  
      private Preferences prefs = Preferences.getInstance();
  
      private boolean canClose;
      private boolean needToRestartXNap = false;
  
      //--- Constructor(s) ---
  
      private PreferencesDialog() 
      {
  		super(XNap.tr("XNap - Settings"));
  	
  		// icon panel
  		initializePanels();
  		listeners.fireDialogWillBecomeVisible(this);
  
  		setSize(prefs.getPrefsWindowWidth(), prefs.getPrefsWindowHeight());
      }
  
      // --- Methods ---
  
      private void initializePanels()
      {
  		JTabbedPane jtpGeneral = new JTabbedPane();
  		addPanel(jtpGeneral, XNap.tr("General"), "gohome.png",
  				 XNap.tr("Personal settings configuration."));
  		CSH.setHelpIDString(jtpGeneral, "general");
  		addTab(jtpGeneral, new PersonalPrefsPanel());
  		addTab(jtpGeneral, new ConfirmPrefsPanel());
  		addTab(jtpGeneral, new ShortcutPrefsPanel());
  
  		JTabbedPane jtpAppearance = new JTabbedPane();
  		addPanel(jtpAppearance, XNap.tr("Appearance"), "list.png",
  				 XNap.tr("Program behaviour and look and feel configuration."));
  		CSH.setHelpIDString(jtpAppearance, "appearance");
 		addTab(jtpAppearance, new ApplicationPrefsPanel());
 		addTab(jtpAppearance, new LookAndFeelPrefsPanel());
 		addTab(jtpAppearance, new ChatAppearancePrefsPanel());
 		addTab(jtpAppearance, new ConsoleAppearancePrefsPanel());
 
 		JTabbedPane jtpFiles = new JTabbedPane();
 		addPanel(jtpFiles, XNap.tr("Files"), "folder.png",
 				 XNap.tr("Folder and program configuration."));
 		CSH.setHelpIDString(jtpFiles, "files");
 		addTab(jtpFiles, new FilePrefsPanel());
 		addTab(jtpFiles, new ProgramPrefsPanel());
 
 		JTabbedPane jtpNetwork = new JTabbedPane();
 		addPanel(jtpNetwork, XNap.tr("Network"), "world.png",
 				 XNap.tr("Firewall and proxy configuration."));
 		CSH.setHelpIDString(jtpNetwork, "network");
 		addTab(jtpNetwork, new NetworkPrefsPanel());
 		addTab(jtpNetwork, new ProxyPrefsPanel());
 
 		// search
 		SearchPrefsPanel spp = new SearchPrefsPanel();
 		CSH.setHelpIDString(spp, "search");
 		addPanel(spp, "find.png");
 		
 		// transfer
 		JTabbedPane jtpTransfer = new JTabbedPane();
 		addPanel(jtpTransfer, XNap.tr("Transfer"), "connect_established.png",
 				 XNap.tr("Throttle and transfer limit configuration."));
 		CSH.setHelpIDString(jtpTransfer, "transfer");
 		addTab(jtpTransfer, new TransferPrefsPanel());
 		addTab(jtpTransfer, new AdvancedTransferPrefsPanel());
 
 		// chat
 		addPanel(new ChatPrefsPanel(), "mail_generic.png");
 
 		// packages
 		addPanel(new PackagePrefsPanel(), "package.png");
 
 		HelpManager.enableHelpKeys(getRootPane(), "configuring-XNap", null);
     }
 
     public boolean apply()
     {
 		// initialize
 		canClose = true;
 
 		// register for restart notification
 		prefs.addPropertyChangeListener(this);
 
 		canClose &= super.apply();
 
 		prefs.removePropertyChangeListener(this);
 		return canClose;
     }
 
     public void close()
     {
 		// save dialog prefs
 		prefs.setPrefsWindowWidth(getBounds().getSize().width);
 		prefs.setPrefsWindowHeight(getBounds().getSize().height);
 
 		// save the preferences to file
 		if (isOkay() && !prefs.write()) {
 			String msg = XNap.tr("Could not write {0}.", prefs.getFilename());
 			JOptionPane.showMessageDialog
 				(this, msg, XNap.tr("Preferences"), 
 				 JOptionPane.ERROR_MESSAGE);
 			return;
 		}
 
 		if (needToRestartXNap) {
 			Dialogs.showRestartNotification(this);
 		}
 
 		listeners.fireDialogWillBecomeInvisible(this);
 
 		dispose();
 		me = null;		    
     }
 
     public void propertyChange(PropertyChangeEvent e)
     {
 		String p = e.getPropertyName();
 
 		if (p.equals("lookAndFeel") || p.equals("showTextIcons")
 			|| p.equals("theme") || p.equals("language")
 			|| p.equals("iconTheme")) {
 
 			needToRestartXNap = true;    
 		}
     }
 
     /***
      * Removes <code>jp</code> from the list.
      */
     public static void removePanel(JPanel jp)
     {
 		if (me != null) {
 			me.remove(jp);
 		}
     }
 
     /***
      * Removes <code>tab</code> from the list of {@link SettingsPanel} 
      * objects. After this method has been invoked, <code>tab.apply()</code>
      * is not called when the dialog is closed.
      */
     public static void removePanel(SettingsPanel tab)
     {
 		if (me != null) {
 			me.remove(tab);
 		}
     }
 
     public static void showDialog(Component c)
     {
         if (me == null) {
             me = new PreferencesDialog();
         }
 		me.show(c);
     }
 
 }