/*
    *  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.prefs;
  
  import java.awt.GridBagLayout;
  import java.awt.GridLayout;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.util.Enumeration;
  import java.util.Iterator;
  
  import javax.help.CSH;
  import javax.swing.ButtonGroup;
  import javax.swing.JPanel;
  import javax.swing.JRadioButton;
  import javax.swing.JTextField;
  
  import org.xnap.XNap;
  import org.xnap.gui.AbstractSettingsPanel;
  import org.xnap.gui.util.GUIHelper;
  import org.xnap.gui.util.GridBagHelper;
  import org.xnap.util.launcher.Launcher;
  import org.xnap.util.launcher.LauncherManager;
  import org.xnap.util.launcher.Player;
  import org.xnap.util.launcher.PlayerManager;
  
  public class ProgramPrefsPanel extends AbstractSettingsPanel 
  {
  
      //--- Data field(s) ---
  
      private ButtonGroup bgPlayer;
      private JTextField jtfPlayerCommand;
  
      private ButtonGroup bgLauncher;
      private JTextField jtfLauncherCommand;
  
      //--- Constructor(s) ---
  
      public ProgramPrefsPanel()
      {
  		setLayout(new GridBagLayout());
  
  		// help
  		CSH.setHelpIDString(this, "files-programs");
  
  		// player
  		JPanel jpPlayer = new JPanel(new GridBagLayout());
  		jpPlayer.setBorder(GUIHelper.createDefaultBorder(XNap.tr("Player")));
  		GridBagHelper.add(this, jpPlayer);
  
  		// player type
  		bgPlayer = new ButtonGroup();
  		JPanel jpPlayerType = new JPanel(new GridLayout(0, 2));
  		GridBagHelper.add(jpPlayer, jpPlayerType);
  
          jtfPlayerCommand = new JTextField(20);
  		CommandListener listener = new CommandListener(jtfPlayerCommand);
  		
  		for (Iterator i = PlayerManager.getInstance().iterator(); 
  			 i.hasNext();) {
  			Player player = (Player)i.next();
  			JRadioButton jrb = new LauncherRadioButton(player);
  			jrb.addActionListener(listener);
  			if (prefs.getPlayerType().equals(player.getKey())) {
  				jrb.setSelected(true);
  				jtfPlayerCommand.setText(player.getCommand());
  				jtfPlayerCommand.setEnabled(player.isEditable());
  			}
  			bgPlayer.add(jrb);
  			jpPlayerType.add(jrb);
  		}
  
  		// player command
          GridBagHelper.addLabel(jpPlayer, XNap.tr("Command")).setLabelFor
  			(jtfPlayerCommand);
  		GridBagHelper.add(jpPlayer, jtfPlayerCommand);
      
  
  		// help
  		CSH.setHelpIDString(jpPlayer, "files-programs-player");
  
 		// file launcher
 		JPanel jpFileLauncher = new JPanel(new GridBagLayout());
 		jpFileLauncher.setBorder
 			(GUIHelper.createDefaultBorder(XNap.tr("File Launcher")));
 		GridBagHelper.add(this, jpFileLauncher);
 
 		// file launcher type
 		bgLauncher = new ButtonGroup();
 		JPanel jpFileLauncherType = new JPanel(new GridLayout(0, 2));
 		GridBagHelper.add(jpFileLauncher, jpFileLauncherType);
 
         jtfLauncherCommand = new JTextField(20);
 		listener = new CommandListener(jtfLauncherCommand);
 		for (Iterator i = LauncherManager.getInstance().iterator(); 
 			 i.hasNext();) {
 			Launcher launcher = (Launcher)i.next();
 			JRadioButton jrb = new LauncherRadioButton(launcher);
 			jrb.addActionListener(listener);
 			if (prefs.getFileLauncherType().equals(launcher.getKey())) {
 				jrb.setSelected(true);
 				jtfLauncherCommand.setText(launcher.getCommand());
 				jtfLauncherCommand.setEnabled(launcher.isEditable());
 			}
 			bgLauncher.add(jrb);
 			jpFileLauncherType.add(jrb);
 		}
 
 		// file launcher command
         GridBagHelper.addLabel(jpFileLauncher, XNap.tr("Command")).setLabelFor
 			(jtfLauncherCommand);
 		GridBagHelper.add(jpFileLauncher, jtfLauncherCommand);
 
 		// help
 		CSH.setHelpIDString(jpFileLauncher, "files-programs-filelauncher");
 
 		GridBagHelper.addVerticalSpacer(this);
 		GUIHelper.setMnemonics(this);
     }
 
     //--- Method(s) ---
 
     public void apply() 
     {
 		prefs.setPlayerType(getSelectedLauncherKey(bgPlayer));
 		prefs.setPlayerCommand(jtfPlayerCommand.getText());
 
 		prefs.setFileLauncherType(getSelectedLauncherKey(bgLauncher));
 		prefs.setFileLauncherCmd(jtfLauncherCommand.getText());
     }
 
     /***
      * Iterates over <code>bg</code> and returns the selected launcher key.
      *
      * @return empty string if no launcher is selected
      */
     public String getSelectedLauncherKey(ButtonGroup bg)
     {
 		for (Enumeration e = bg.getElements(); e.hasMoreElements();) {
 			LauncherRadioButton lrb = (LauncherRadioButton)e.nextElement();
 			if (lrb.isSelected()) {
 				return lrb.getLauncher().getKey();
 			}
 		}
 
 		return "";
     }
 
     public String getTitle()
     {
 		return XNap.tr("Programs");
     }
 
     //--- Inner Class(es) ---
 
     /***
      * Stores the {@link Launcher} object that is associated with the 
      * {@link JRadioButton}.
      */
     private class LauncherRadioButton extends JRadioButton {
 
 		//--- Data field(s) ---
 	
 		private Launcher launcher;
 
 		//--- Constructor(s) ---
 	
 		public LauncherRadioButton(Launcher launcher)
 		{
 			super(launcher.getName());
 
 			this.launcher = launcher;
 
 			this.setEnabled(launcher.isEnabled());
 		}
 
 		//--- Method(s) ---
 	
 		public Launcher getLauncher()
 		{
 			return launcher;
 		}
 
     }
 
     /***
      * Sets the command if a launcher or player is selected.
      */
     private class CommandListener implements ActionListener {
 
 		//--- Data field(s) ---
 
 		private JTextField jtfCommand;
 
 		//--- Constructor(s) ---
 	
 		public CommandListener(JTextField jtfCommand)
 		{
 			this.jtfCommand = jtfCommand;
 		}
 
 		//--- Method(s) ---
 	
 		public void actionPerformed(ActionEvent event)
 		{
 			LauncherRadioButton lrb = (LauncherRadioButton)event.getSource();
 			jtfCommand.setText(lrb.getLauncher().getCommand());
 			jtfCommand.setEnabled(lrb.getLauncher().isEditable());
 		}
 
     }
 
     
 }