inputnametextfield.java

1、 聊天室的实现

import java.awt.*;
import java.net.*;
import java.awt.event.*;
import java.io.*;
import java.util.Hashtable;

import javax.swing.JOptionPane;

public class InputNameTextField extends Panel implements ActionListener,
		Runnable
{
	TextField nameField = null;

	String name = null;

	TextField nickNameField = null;

	String nickName = "";

	Button enter = null, leave = null;

	Choice colorChoice = null;

	Socket userSocket = null;

	DataInputStream in = null;

	DataOutputStream out = null;

	Thread chatThread = null;

	boolean okToChat = false;

	Hashtable listTable;

	Hashtable bakgrdTable;

	String[] bakColor = { "black", "blue", "cyan", "darkgray", "gray", "green",
			"light gray", "magenta", "orange", "pink", "red", "white", "yellow" };

	Color[] color = { Color.BLACK, Color.BLUE, Color.CYAN, Color.DARK_GRAY,
			Color.GRAY, Color.GREEN, Color.LIGHT_GRAY, Color.MAGENTA,
			Color.ORANGE, Color.PINK, Color.RED, Color.WHITE, Color.YELLOW };

	public InputNameTextField(Hashtable listTable)
	{
		this.listTable = listTable;
		nameField = new TextField(10);
		nickNameField = new TextField(10);

		enter = new Button("登录");
		enter.setEnabled(true);
		leave = new Button("退出");
		enter.addActionListener(this);
		leave.addActionListener(this);

		bakgrdTable = new Hashtable();
		colorChoice = new Choice();

		colorChoice.setSize(60, 30);
		for (int i = 0; i < bakColor.length; i++)
		{
			colorChoice.addItem(bakColor[i]);
			bakgrdTable.put(bakColor[i], color[i]);
		}
		colorChoice.select(0);
		colorChoice.addItemListener(new java.awt.event.ItemListener()
		{
			public void itemStateChanged(java.awt.event.ItemEvent e)
			{
				Color color = (Color) bakgrdTable.get(colorChoice
						.getSelectedItem());
				ClientChat.chatArea.pubArea.setBackground(color);
			}
		});
		chatThread = new Thread(this);

		add(new Label("姓名:"));
		add(nameField);
		add(new Label("昵称:"));
		add(nickNameField);

		add(enter);
		add(leave);
		add(new Label("聊天区背景色:"));
		add(colorChoice);
		leave.setEnabled(false);
	}

	public void setOkToChat(boolean b)
	{
		okToChat = b;
	}

	public boolean getOkToChat()
	{
		return okToChat;
	}

	public String getName()
	{
		return name;
	}

	public void setName(String s)
	{
		name = s;
	}

	public String getNickName()
	{
		return nickName;
	}

	public void setNickName(String s)
	{
		nickName = s;
	}

	public Socket getSocket()
	{
		return userSocket;
	}

	public void setSocketConnection(Socket socket, DataInputStream in,
			DataOutputStream out)
	{

		this.userSocket = socket;
		this.in = in;
		this.out = out;
		try
		{
			chatThread.start();
		} catch (Exception e)
		{
			nameField.setText("" + e);
		}
	}

	public void actionPerformed(ActionEvent e)
	{
		if (e.getSource() == enter)
		{
			leave.setEnabled(true);
			if (okToChat == true)
			{
				// ClientChat.remindLabel.setText("您正在聊天:" + name);
				// JOptionPane.showConfirmDialog(null, "您正在聊天");
				// nameField.setText(null);
			} else
			{
				this.setName(nameField.getText());
				this.setNickName(nickNameField.getText());
				enter.setEnabled(false);
				if (userSocket != null && name != null)
				{
					try
					{
						out.writeUTF("姓名:" + name + "昵称:" + nickName);
					} catch (IOException e1)
					{
						// TODO 自动生成 catch 块
						// nameField.setText("没有连通服务器" + e1);
						e1.printStackTrace();
					}
					okToChat = true;
				}
			}
		}
		if (e.getSource() == leave)
		{
			try
			{
				out.writeUTF("用户离开:");
			} catch (IOException e1)
			{
				// TODO 自动生成 catch 块
				e1.printStackTrace();
			}
			okToChat = false;
			nameField.setText(null);
			nickNameField.setText("");
			enter.setEnabled(true);

		}
	}

	public void run()
	{
		String msg = null;
		while (true)
		{
			if (in != null)
			{
				try
				{
					msg = in.readUTF();
				} catch (IOException e)
				{
					nameField.setText("和服务器断开" + e);
				}
			}
			if (msg.startsWith("可以聊天:"))
			{
				okToChat = true;
				break;
			} else if (msg.startsWith("聊天者:"))
			{
				String people = msg.substring(msg.indexOf(":") + 1);
				listTable.put(people, people);
			} else if (msg.startsWith("不可以聊天:"))
			{
				okToChat = false;
				JOptionPane.showConfirmDialog(null, "该姓名已被占用", "登录错误",
						JOptionPane.ERROR_MESSAGE);
			}
		}
	}
}