/**
 * Title:        Ball World<p>
 * Description:  <p>
 * Copyright:    Copyright (c) DXN, SBW<p>
 * Company:      Rice University<p>
 * @author DXN
 * @version 1.0
 */
package ballworld;

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


/**
 * A subclass of JFrame containing the various GUI components specified in the program behavior specification.
 * Provides a Container area where the drawing object is to be drawn.
 */
public class BallGUI2 extends JFrame {
  
  
  private JPanel _controlPnl = new JPanel();
  
  private ILambda _paintCmd = NoOpLambda.Singleton;
  
  private JPanel _canvasPnl = new JPanel() {
    public void paint(Graphics g) {
      super.paint(g);
      _paintCmd.apply(g);
    }
  };
  private JButton _clearAllBtn = new JButton("ClearAll");
  private JTextField _inputTF = new JTextField("Straight");
  private JPanel _inputPnl = new JPanel();
  private JButton _makeSwitcherBtn = new JButton("Make Switcher");
  private JButton _switchBtn = new JButton("Switch!");
  private JPanel _switcherPnl = new JPanel();
  private JPanel _cbPnl = new JPanel();
  private JComboBox _list1DL = new JComboBox();
  private JComboBox _list2DL = new JComboBox();
  private JButton _combineBtn = new JButton("Combine!");
  private JButton _addBtn = new JButton("Add to lists");
  private JButton _makeSelectedBtn = new JButton("Make Selected Ball");
  
  /**
   * Initializes and lays out the GUI components.
   */
  public BallGUI2(final ILambda makeBallCmd, 
                 final ILambda clearBallsCmd, 
                 ILambda paintCmd, 
                 final ILambda makeSwitcherCmd,
                 final ILambda switchCmd,
                 final ILambda addCmd,
                 final ILambda combineCmd) {
    _paintCmd = paintCmd;   
    try {
      init();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
    setSize (new Dimension(600, 450));
    
    
    _clearAllBtn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        clearBallsCmd.apply(null);
      }
    });
    
    _makeSwitcherBtn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        makeSwitcherCmd.apply(null);
      }
    });
    
    _switchBtn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        switchCmd.apply(_list1DL.getSelectedItem());
      }
    });
    
    _addBtn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        Object o =addCmd.apply(_inputTF.getText());
        if(null==o) return;
        _list1DL.insertItemAt(o,0);
        _list2DL.insertItemAt(o,0);
      }
    });
    
    _combineBtn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        Object o =combineCmd.apply(new Object[]{_list1DL.getSelectedItem(),_list2DL.getSelectedItem()});
        if(null==o) return;
        _list1DL.insertItemAt(o,0);
        _list2DL.insertItemAt(o,0);
      }
    });
    
    _makeSelectedBtn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        makeBallCmd.apply(_list1DL.getSelectedItem());
      }
    });
    
    
  }
  
  private void init() throws Exception {
    this.setTitle("Ball World");
    this.getContentPane().setLayout(new BorderLayout());
    this.getContentPane().add(_controlPnl, BorderLayout.NORTH);
    //_canvasPnl.setBackground(Color.BLACK);
    this.getContentPane().add(_canvasPnl, BorderLayout.CENTER);
    _inputPnl.setLayout(new GridLayout(0,1));
    _controlPnl.add(_inputPnl);
    _inputPnl.add(_inputTF);
    _inputTF.setToolTipText("Name of strategy,XXX, from ballworld.XXXStrategy.");
    _inputPnl.add(_addBtn);
    _addBtn.setToolTipText("Add strategy to both droplists.  The rest of the of classname is added automatically.");
    _cbPnl.setLayout(new GridLayout(0,1));
    _controlPnl.add(_cbPnl);
    _cbPnl.add(_makeSelectedBtn);
    _makeSelectedBtn.setToolTipText("Instantiate a Ball with the strategy selected in the upper droplist.");
    _cbPnl.add(_list1DL);
    _cbPnl.add(_list2DL);
    _cbPnl.add(_combineBtn);
    _combineBtn.setToolTipText("Combine the selected strategies from both droplists into a single strategy that is added to both droplists.");
    _switcherPnl.setLayout(new GridLayout(0,1));
    _controlPnl.add(_switcherPnl);
    _switcherPnl.add(_makeSwitcherBtn);
    _makeSwitcherBtn.setToolTipText("Instantiate a ball that can switch strategies.");
    _switcherPnl.add(_switchBtn);
    _switchBtn.setToolTipText("Switch the strategy on all switcher balls to the currently selected strategy in the upper droplist.");
    _controlPnl.add(_clearAllBtn); 
    _clearAllBtn.setToolTipText("Clear all the balls from the screen.");
  }
  
  
  //Overridden so we can exit on System Close
  protected void processWindowEvent(WindowEvent e)
  {
    super.processWindowEvent(e);
    if(e.getID() == WindowEvent.WINDOW_CLOSING)
    {
      System.exit(0);
    }
  }
  
  /**
   * Accessor method for the panel upon which the balls are to be drawn
   */
  public Container getContainer()
  {
    return _canvasPnl;
  }
}