package chat;

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.event.*;
import java.io.*;
import java.net.*;
import lava.net.psyc.UNI;

/**
 *
 **/
public class ConferencingWindow extends JFrame 
{
   /**
    *
    **/
   private static int INPUT_BUFFER_LEN = 10;

   /**
    *
    **/
   private TextListener listener = null;

   /**
    *
    **/
   public Object identifier = null;

   /**
    *
    **/
   public DefaultListModel members = new DefaultListModel();

   /**
    *
    **/
   private JComboBox _inputCombo;

   /**
    *
    **/
   private ComboBoxEditor _inputEditor;

   /**
    *
    **/
   private JTextPane _view;

   /**
    *
    **/
   private JLabel _statusLine;

   /**
    *
    **/
   private JPanel _viewPanel, _peoplePanel, _mainPanel;

   /**
    *
    **/
   private JSplitPane _splitPane;

   /**
    *
    **/
   public ConferencingWindow(UserServer userServer, TextListener listener, //
   String context, String title, boolean showPeople)
   {
      this.listener = listener;
      setTitle(title);
      setBackground(Properties.BG_COLOR);
      getContentPane().setLayout(new BorderLayout());
      getContentPane().setBackground(Properties.BG_COLOR);
      getContentPane().setForeground(Properties.TEXT_COLOR);
      initViewPanel(Properties.ConferencingViewSize);
      initStatusLine();
      _mainPanel = new JPanel();
      _mainPanel.setLayout(new BorderLayout());
      if(showPeople)
      {
         initPeoplePanel(userServer,context,//
         Properties.ConferencingPeopleSize);
         initSplitPane();
         _mainPanel.add(_splitPane,BorderLayout.CENTER);
      }
      else
      {
         _mainPanel.add(_viewPanel,BorderLayout.CENTER);
      }
      // und jetzt den MainPanel darein
      getContentPane().add(_mainPanel,BorderLayout.CENTER);
      getContentPane().add(_statusLine,BorderLayout.SOUTH);
      pack();
      setVisible(true);
      installInputListeners();
      _inputEditor.getEditorComponent().requestFocus();
      addWindowListener(new WindowAdapter()      {
         /**
          *
          **/
         public void windowClosing(WindowEvent we)
         {
            ConferencingWindow.this.listener.closedWindow(//
            ConferencingWindow.this);
            dispose();
         }

      }
);
   }

   /**
    *
    **/
   private void initViewPanel(Dimension size)
   {
      _viewPanel = new JPanel();
      _viewPanel.setLayout(new BorderLayout());
      _inputCombo = new JComboBox();
      _inputCombo.setEditable(true);
      _inputEditor = _inputCombo.getEditor();
      _view = new JTextPane();
      _view.setBackground(Properties.BG_COLOR);
      _view.setForeground(Properties.TEXT_COLOR);
      _view.setEditable(false);
      JScrollPane scroller = new JScrollPane(_view);
      _viewPanel.add(scroller,BorderLayout.CENTER);
      _viewPanel.add(_inputCombo,BorderLayout.SOUTH);
      _viewPanel.setPreferredSize(size);
      // jetzt noch Style festlegen
      Style def = _view.getStyle(StyleContext.DEFAULT_STYLE);
      StyleConstants.setFontFamily(def,"Helvetica");
      StyleConstants.setFontSize(def,14);
      StyleConstants.setForeground(def,Properties.TEXT_COLOR);
   }

   /**
    *
    **/
   private void initStatusLine()
   {
      _statusLine = new JLabel();
      _statusLine.setForeground(Properties.STATUS_COLOR);
      _statusLine.setBackground(Properties.BG_COLOR);
   }

   /**
    *
    **/
   private void initPeoplePanel(UserServer userServer, String context, //
   Dimension size)
   {
      _peoplePanel = new PeoplePanel(members,size,userServer,context);
   }

   /**
    *
    **/
   private void installInputListeners()
   {
      // ein actionlistener auf das InputFeld
      _inputEditor.getEditorComponent().addKeyListener(new KeyAdapter()      {
         /**
          *
          **/
         // keyTyped doesn't work!!
         public void keyReleased(KeyEvent ke)
         {
            // return pressed ?
            if(ke.getKeyCode() == KeyEvent.VK_ENTER)
            {
               String input = (String)_inputEditor.getItem();
               listener.gotText(ConferencingWindow.this,input);
               _inputCombo.insertItemAt(input,0);
               _inputEditor.setItem("");
               // remove from end of history
               int size = _inputCombo.getItemCount();
               if(size > INPUT_BUFFER_LEN)
                  _inputCombo.removeItemAt(size - 1);
            }
         }

      }
);
      // ein itemlistener auf die liste
      _inputCombo.addItemListener(new ItemListener()      {
         /**
          *
          **/
         public void itemStateChanged(ItemEvent ie)
         {
            int index = _inputCombo.getSelectedIndex();
            // -1 -> Input-Feld
            if(index != -1)
               _inputEditor.setItem(_inputCombo.getSelectedItem());
            _inputEditor.getEditorComponent().requestFocus();
         }

      }
);
   }

   /**
    *
    **/
   private void initSplitPane()
   {
      _splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,_viewPanel,_peoplePanel);
      _splitPane.addComponentListener(new ComponentAdapter()      {
         /**
          *
          **/
         private int lastWidth = 0;

         /**
          *
          **/
         public void componentResized(ComponentEvent ce)
         {
            Dimension d = _splitPane.getSize();
            if(lastWidth != d.width)
               _splitPane.setDividerLocation(0.8);
            lastWidth = d.width;
         }

      }
);
   }

   /**
    * clear it, by the lynx
    **/
   public void clear()
   {
      _view.setText("");
      _statusLine.setText("");
   }

   /**
    *
    **/
   public void showText(String text)
   {
      //_view.setText(_view.getText()+text+"\n");
      try
      {
         _view.getStyledDocument().insertString(//
         _view.getStyledDocument().getLength(),text + "\n",null);
      }
      catch(BadLocationException e)
      {
         System.out.println("whoups: " + e);
      }
   }

   /**
    *
    **/
   public void showStatus(String text)
   {
      _statusLine.setText(text);
   }

   /**
    *
    **/
   public static void main(String[] args)
   {
      ConferencingWindow c = new ConferencingWindow(//
      new UserServer()      {
         /**
          *
          **/
         public void friendSelected(String context, UNI user, int clickCount)
         {
         }

      }
,new TextListener()      {
         /**
          *
          **/
         public void closedWindow(ConferencingWindow window)
         {
         }

         /**
          *
          **/
         public void gotText(ConferencingWindow window, String text)
         {
            window.showText(text);
         }

      }
,null,"Psyc-Chat V0.42",true);
      c.addWindowListener(new WindowAdapter()      {
         /**
          *
          **/
         public void windowClosing(WindowEvent we)
         {
            System.exit(0);
         }

      }
);
   }

}