urgenmenuscreen.java

PDA餐饮管理系统,在掌上电脑实现的,可以开台,点菜等多功能模块

package junwei;

import javax.microedition.lcdui.*;
import item.*;
import rms.*;
import java.util.*;

/**
 * 催菜界面	
 * @author hong
 *
 */
public class UrgenMenuScreen extends InputScreen implements CommandListener{

	private static UrgenMenuScreen instance;

	private static StringItem siTableNo;
	private static ShowMenuItem menuItem;

	synchronized public static UrgenMenuScreen getInstance() {
		if (instance == null)
			instance = new UrgenMenuScreen();
		siTableNo.setText(MainScreen.getInstance().getCurTableNo());
		return instance;
	}

	private UrgenMenuScreen() {
		super("催菜");
		
		siTableNo=new StringItem("桌台号：","",Item.PLAIN);
		append(siTableNo);
		
		menuItem=new ShowMenuItem("客人催菜：",this.getWidth(),this.getHeight()-30);
		menuItem.setContent(null);
		append(menuItem);
		
		addCommand(new Command("发送", Command.OK, 1));
		addCommand(new Command("增加菜品", Command.OK, 1));
		addCommand(new Command("删除菜品", Command.OK, 1));
		addCommand(new Command("取消", Command.CANCEL, 1));
		setCommandListener(this);
	}
	
	
	public void commandAction(Command c, Displayable s) {
		String cmd = c.getLabel();
        if (cmd.equals("发送")) {
	 		GetDataThread t = new GetDataThread();
	 		StringBuffer strDetail=new StringBuffer();
	 		Menu aMenu;
	 		Vector menuDetail=menuItem.getContent();
	 		for (int i=0;i<menuDetail.size();i++){
	 			aMenu=(Menu)menuDetail.elementAt(i);
	 			if (!strDetail.toString().trim().equals(""))
	 				strDetail.append(",");
	 			strDetail.append(aMenu.getMenuId());
	 		}
			t.init(GetDataThread.rt_work,"UrgenMenuServlet?tableNo="
					+ siTableNo.getText()+"&menuList="+strDetail);
			
			t.start();
			Navigator.flow("确定");
		}
		else if (cmd.equals("增加菜品")) {
			SelectMenuScreen.getInstance().initTag(3);
			Navigator.display.setCurrent(SelectMenuScreen.getInstance());
		}
		else if (cmd.equals("删除菜品")) {
			menuItem.delContent();
		}
		else
    		Navigator.flow(cmd);
	}
	
	public void addMenu(Object aMenu){
		menuItem.addContent(aMenu);
	}
	
}