mainmenu.java

对对碰小游戏

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

public class MainMenu extends JPanel{

	/** Identifies the Game->Start menu item.*/
   	public final static int GAME_START_ID     = 0;

   	/** Identifies the Game->Stop menu item.*/
   	public final static int GAME_STOP_ID    = 1;

   	/** Identifies the Game->Auto menu item.*/
   	public final static int GAME_AUTO_ID  = 2;

   	/** Identifies the Help->Game Help menu item.*/
   	public final static int GAME_HELP_ID = 3;

   
   	private ActionListener parentEventProcessor;
   	private MainMenu thisClass;

   	private JMenuItem gameStartMenuItem;
   	private JMenuItem gameStopMenuItem;
   	private JMenuItem gameAutoMenuItem;
   	private JMenuItem gameHelpMenuItem;

   	private JButton gameStartToolbarItem;
   	private JButton gameStopToolbarItem;
   	private JButton gameAutoToolbarItem;

	public MainMenu(ActionListener parentListener){
		      JMenu     gamePulldown;
		      JMenu     helpPulldown;

		      JMenuItem mi;
		      JButton   button;

		      JMenuBar menuBar;
		      JToolBar toolBar;
		      setLayout(new BorderLayout());
		      add(menuBar = new JMenuBar(),BorderLayout.NORTH);
		      add(toolBar = new JToolBar(),BorderLayout.SOUTH);
		      toolBar.setFloatable(true);

		      thisClass = this;
		      parentEventProcessor = parentListener;
		      MenuActionListener menuEventProcessor = new MenuActionListener();

		      toolBar.add(gameStartToolbarItem = createToolBarButton (
		         "GameStart",7,menuEventProcessor,"GameStart","courier"));

		      toolBar.add(gameStopToolbarItem = createToolBarButton (
		         "GameStop",8,menuEventProcessor,"GameStop","courier"));

		      toolBar.add(gameAutoToolbarItem = createToolBarButton (
		         "AutoRun",9,menuEventProcessor,"GameAuto","courier"));


		      gamePulldown = (JMenu) menuBar.add(new JMenu("Game"));
		      gamePulldown.setMnemonic('G');

		      gameStartMenuItem = (JMenuItem) gamePulldown.add(new JMenuItem("Start"));
		      gameStartMenuItem.setMnemonic('S');
		      gameStartMenuItem.addActionListener(menuEventProcessor);
		      gameStartMenuItem.setActionCommand("GameStart");

		      gameStopMenuItem = (JMenuItem) gamePulldown.add(new JMenuItem("Stop"));
		      gameStopMenuItem.setMnemonic('T');
		      gameStopMenuItem.addActionListener(menuEventProcessor);
		      gameStopMenuItem.setActionCommand("GameStop");

		      gamePulldown.add(new JSeparator());

		      gameAutoMenuItem = (JMenuItem) gamePulldown.add(new JMenuItem("Auto"));
		      gameAutoMenuItem.setMnemonic('U');
		      gameAutoMenuItem.addActionListener(menuEventProcessor);
		      gameAutoMenuItem.setActionCommand("GameAuto");
			  
		      menuBar.add(helpPulldown = new JMenu("Help"),BorderLayout.EAST);

		      helpPulldown.setMnemonic('H');
		      gameHelpMenuItem = (JMenuItem) helpPulldown.add(new JMenuItem("About"));
		      gameHelpMenuItem.setMnemonic('A');
		      gameHelpMenuItem.addActionListener(menuEventProcessor);
		      gameHelpMenuItem.setActionCommand("GameHelp");
	}

	private class MenuActionListener implements ActionListener {

     		public void actionPerformed(ActionEvent e) {

			         if (parentEventProcessor != null) {

			           if (e.getActionCommand().equals("GameStart")) {
				     parentEventProcessor.actionPerformed(
			               new ActionEvent(thisClass,GAME_START_ID,e.getActionCommand()));
			           }

			           else if (e.getActionCommand().equals("GameStop")) {
				     parentEventProcessor.actionPerformed (
			               new ActionEvent(thisClass,GAME_STOP_ID,e.getActionCommand()));
			           }

			           else if (e.getActionCommand().equals("GameAuto")) {
				     parentEventProcessor.actionPerformed (
			               new ActionEvent(thisClass,GAME_AUTO_ID,e.getActionCommand()));
			           }

			           else if (e.getActionCommand().equals("GameHelp")) {
				     parentEventProcessor.actionPerformed (
			               new ActionEvent(thisClass,GAME_HELP_ID,e.getActionCommand()));
			           }
			        }

     }
   }

	private JButton createToolBarButton (String buttonText,
                                        int buttonNumber,
                                        ActionListener buttonAction,
                                        String actionID,
                                        String fontName) {
      			JButton button = new JButton();
      			button.setToolTipText (buttonText);
		       button.addActionListener(buttonAction);
		       button.setActionCommand(actionID);
		       button.setIcon(ImageFactory.getInstance().getImageicon(buttonNumber));
		       return button;
	}

public void setMenuItemAvailabilty (boolean[] menuItems) {

     if (menuItems.length == 2) {

	 gameStartMenuItem.setEnabled (menuItems[GAME_START_ID]);
	 gameStartToolbarItem.setEnabled (menuItems[GAME_START_ID]);

	 gameStopMenuItem.setEnabled (menuItems[GAME_STOP_ID]);
	 gameStopToolbarItem.setEnabled (menuItems[GAME_STOP_ID]);
     }

   }
	
}