msg.java

纸牌游戏21点网络版的源码

package com.dfun.blackjack;

import javax.microedition.lcdui.*;
import java.util.Vector;
import javax.microedition.io.Connection;

/**************************************************
 * @author Beetle
 * 类功能介绍:
 **************************************************/
public class Msg
	implements CommandListener {
	private Main main;
	private Display display;
	private Connection conn;
	private TextField myMsg;
	private Form msgForm;
	private Command send;
	private Command back;
	private Displayable tempDisplay;
	/*******************************************************
	 * 功能介绍:构造函数
	 * 输入参数:无
	 *******************************************************/
	public Msg(Main main, Display display, Connection conn) {
		this.main = main;
		this.display = display;
		this.conn = conn;
		send = new Command("发送", Command.OK, 1);
		back = new Command("返回", Command.BACK, 1);
		msgForm = new Form("聊天室");
		myMsg = new TextField(null, "", 20, TextField.ANY);
		msgForm.addCommand(send);
		msgForm.addCommand(back);
		msgForm.append(myMsg);
		msgForm.setCommandListener(this);
	}

	public void commandAction(Command c, Displayable d) {
		if (c == send) {
			String strTmp = myMsg.getString();
			if (strTmp.length() == 0) {
				return;
			}
			conn.sendOneData("13" + main.strUserName + "说: " + strTmp);
			myMsg.setString("");
		}
		else if (c == back) {
			display.setCurrent(tempDisplay);
		}
	}

	public void showForm() {
		tempDisplay = display.getCurrent();
		display.setCurrent(msgForm);
	}

	public void addMsg(String strTmp) {
		msgForm.append(strTmp + "\n");
		if (msgForm.size() > 6) {
			msgForm.delete(1);
		}
		if (display.getCurrent() == msgForm) {
			display.setCurrent(msgForm);
		}
	}
}