editmenuscreen.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 javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordStore;

import rms.*;

/**
 * 设置点菜项目的数量、口味要求、状态
 * @author hong
 *
 */
public class EditMenuScreen extends InputScreen implements CommandListener{

	private static EditMenuScreen instance;
    private static TextField textAmount;
	private static ChoiceGroup choiceRemark;
	private static TextField textOther;
	private static ChoiceGroup choiceStatus;
	

	synchronized public static EditMenuScreen getInstance() {
		if (instance == null)
			instance = new EditMenuScreen();
		BillDetail aBillDetail=AddMenuScreen.getInstance().getSelectDetail();
		textAmount.setString(String.valueOf(aBillDetail.getAmount()));
		
		for (int j=0;j<choiceRemark.size();j++)
			 choiceRemark.setSelectedIndex(j,false); 
		textOther.setString("");
		if (!aBillDetail.getRemark().equals(""))
		{
		   String remarks[] = MainMidlet.splitString(aBillDetail.getRemark(),
					',');
			boolean hasSelect;
			for (int i = 0; i < remarks.length; i++) {
				hasSelect = false;
				for (int j = 0; j < choiceRemark.size(); j++) {
					if (choiceRemark.getString(j).equals(remarks[i])) {
						choiceRemark.setSelectedIndex(j, true);
						hasSelect = true;
						break;
					}
				}
				if (!hasSelect) {
					if (!textOther.getString().equals(""))
						textOther.setString(textOther.getString() + ",");
					textOther.setString(textOther.getString() + remarks[i]);
				}

			}
		}
		
		choiceStatus.setSelectedIndex(aBillDetail.getStatusID(),true);
		return instance;
	}

	private EditMenuScreen() {
		super("菜品设置");
		
		textAmount=new TextField("数量：","",6,Item.PLAIN|TextField.DECIMAL);
		append(textAmount);
		
		choiceRemark=new ChoiceGroup("客人要求：",Choice.MULTIPLE);
		RecordStore rs = RMSUtil.openRSAnymay(MainMidlet.RMS_TASTE);
		if (rs != null) {
			try {
				RecordEnumeration re = rs.enumerateRecords(null, null, false);
				Syscode aTaste;
				while (re.hasNextElement()) {
					byte[] data = re.nextRecord();
					aTaste=Syscode.decode(data);
					choiceRemark.append(aTaste.getName(),null);
				}
				rs.closeRecordStore();
			} catch (Exception e) {
				System.out.println(e.toString());
			}
		}
		append(choiceRemark);
		
		textOther=new TextField("其他要求：","",30,Item.PLAIN);
		append(textOther);

		choiceStatus=new ChoiceGroup("菜品状态：",Choice.EXCLUSIVE);
		choiceStatus.append("正常",null);
		choiceStatus.append("等叫",null);
		choiceStatus.append("已上",null);
		append(choiceStatus);
		
		addCommand(new Command("确定", 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("确定")) {
			String remark = "";
			boolean[] seleted=new boolean[choiceRemark.size()];
			if (choiceRemark.getSelectedFlags(seleted) > 0) {
				for (int i = 0; i < seleted.length; i++) {
					if (seleted[i]) {
						if (!remark.equals(""))
							remark += ",";
						remark += choiceRemark.getString(i);
					}
				}
			}
			if (!textOther.getString().equals("")) {
				if (!remark.equals(""))
					remark += ",";
				remark += textOther.getString();

			}
			AddMenuScreen.getInstance().editMenu(
					Float.valueOf(textAmount.getString()).floatValue(), remark,
					choiceStatus.getSelectedIndex());
		}
		Navigator.display.setCurrent(AddMenuScreen.getInstance());
	}

}