📄 f04bacc61ad800191895ba9e8b149c92
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if (!hasLogin)
{
if((inputArea.getText().equals("")) || (inputArea.getText().indexOf(" ") != -1))
{
messageArea.append(ERROR + "您没有输入或者输入的登录名中存在空格");
messageArea.append(PROMPT + "请输入用户名，点击登陆按钮进行登录");
}
else
{
loginSuccess = tcpConnection.sendLoginInfo(inputArea.getText());
//如果没有重名用户，登陆成功，然后去得到欢迎信息&端口号和用户列表
if (loginSuccess)
{
afterLogin();
}
//如若有重名用户，重新开始连接登陆
else
{
disConnect();
PublicChatGUI.this.appendMessageAreaText(ERROR + "！存在重名用户，请重新连接");
}
//用户输入信息已经使用过了，清空输入区
PublicChatGUI.this.setinputAreaText("");
}
}
//否则，用UDP连接发送消息：
else
{
if (privateReceiver != null)
{
if (((String)privateReceiver).equals(userName))
{
PublicChatGUI.this.appendMessageAreaText(PROMPT + "您不能和自己私聊");
return ;
}
messageToBeSent = new String("PRIVATE FROM " + userName + " TO " + (String)privateReceiver + " MSG " + inputArea.getText());
}
else
messageToBeSent = new String("PUBLIC " + userName + ": " + inputArea.getText());
if (messageToBeSent.length() > 1024)
{
PublicChatGUI.this.appendMessageAreaText(ERROR + "输入信息太长，服务器无法接受，请重新输入");
PublicChatGUI.this.setinputAreaText("");
return ;
}
sendUDPMessage(messageToBeSent);
//用户说完一句话后，将输入区清空：
PublicChatGUI.this.setinputAreaText("");
}
}
});
}
if (exitButton == null)
{
exitButton = new JButton(new ImageIcon(getClass().getResource("exit.gif")));
exitButton.setText("Alt + ESC");
//用Alt + Escape 退出
exitButton.setMnemonic(KeyEvent.VK_ESCAPE);
exitButton.setToolTipText("Alt + Escape退出");
exitButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
if (hasLogin)
{
disConnect();
}
System.exit(0);
}
});
}
//设置Panel：
//将messagePane放入messagePanel中
messagePanel.add(BorderLayout.CENTER, messagePane);
//以下是sendPanel的部分：
toolbarPanel.add(BorderLayout.CENTER, toolBar);
inputPanel.add(BorderLayout.CENTER, inputPane);
buttonPanel.add(sendButton);
buttonPanel.add(exitButton);
sendPanel.add(BorderLayout.NORTH, toolbarPanel);
sendPanel.add(BorderLayout.CENTER, inputPanel);
sendPanel.add(BorderLayout.SOUTH, buttonPanel);
//将messagePanel和sendPanel包装于communicationPanel
communicationPanel.add(messagePanel);
communicationPanel.add(sendPanel);
//将用户列表栏添加到listPanel中
listPanel.add(BorderLayout.NORTH, new JLabel("沦落人家"));
listPanel.add(BorderLayout.CENTER, listPane);
panel.add(BorderLayout.CENTER, communicationPanel);
panel.add(BorderLayout.EAST, listPanel);
}
void initMenuBar()
{
if (menuBar == null)
menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("文件(F)");
fileMenu.setMnemonic(KeyEvent.VK_F);
JMenuItem exitItem = new JMenuItem("退出(X)");
exitItem.setMnemonic(KeyEvent.VK_X);
exitItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
if (PublicChatGUI.this.hasLogin)
{
disConnect();
}
System.exit(0);
}
});
fileMenu.add(exitItem);
JMenu systemMenu = new JMenu("系统(S)");
systemMenu.setMnemonic(KeyEvent.VK_S);
JMenuItem connectItem = new JMenuItem("连接(C)");
connectItem.setMnemonic(KeyEvent.VK_C);
connectItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//建立TCP连接:
connectToServer();
}
});
JMenuItem disconnectItem = new JMenuItem("断开连接(N)");
disconnectItem.setMnemonic(KeyEvent.VK_N);
disconnectItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
disConnect();
lItems.removeElement(userName);
}
});
systemMenu.add(connectItem);
systemMenu.add(disconnectItem);
JMenu settingMenu = new JMenu("选项(E)");
settingMenu.setMnemonic(KeyEvent.VK_E);
JMenuItem serverNameItem = new JMenuItem("服务器地址(D)..");
serverNameItem.setMnemonic(KeyEvent.VK_D);
JMenuItem portNumberItem = new JMenuItem("服务器TCP端口(P)..");
portNumberItem.setMnemonic(KeyEvent.VK_P);
serverNameItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
ConfigDialog configDialog = new ConfigDialog(PublicChatGUI.this, host, port);
configDialog.portField.setEditable(false);
configDialog.show();
host = configDialog.serverName;
//调试
// System.out.println("configDialog.serverName:" + configDialog.serverName);
}
});
portNumberItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
ConfigDialog configDialog = new ConfigDialog(PublicChatGUI.this, host, port);
configDialog.nameField.setEditable(false);
configDialog.show();
port = configDialog.serverTcpPort;
}
});
settingMenu.add(serverNameItem);
settingMenu.add(portNumberItem);
JMenu helpMenu = new JMenu("帮助(H)");
helpMenu.setMnemonic(KeyEvent.VK_H);
JMenuItem about = new JMenuItem("关于\"别问我是谁，请与我面对\"聊天软件..");
JMenuItem contents = new JMenuItem("Content");
contents.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
try
{
Runtime.getRuntime().exec("notepad " + "./Readme.txt");
} catch(IOException ioe)
{
PublicChatGUI.this.appendMessageAreaText("Error accured");
}
}
});
about.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
JOptionPane.showMessageDialog(PublicChatGUI.this,
"版权所有：梅南翔\n版权单位：同济大学软件软件学院\n日期：2005年6月",
"About..", JOptionPane.OK_OPTION);
}
});
helpMenu.add(about);
helpMenu.add(contents);
menuBar.add(fileMenu);
menuBar.add(systemMenu);
menuBar.add(settingMenu);
menuBar.add(helpMenu);
}
void initFrame()
{
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent frameEvent)
{
if (hasLogin)
{
disConnect();
}
System.exit(0);
}
});
this.setSize(500, 550);
this.setTitle("别问我是谁，请与我面对");
}
PublicChatGUI()
{
initFrame();
initPanel();
initMenuBar();
}
public static void main(String[] args)
{
PublicChatGUI chatClient = new PublicChatGUI();
chatClient.setContentPane(chatClient.panel);
chatClient.setJMenuBar(chatClient.menuBar);
chatClient.show();
}
}
class ConfigDialog extends JDialog
{
String serverName = null;
int serverTcpPort = 0;
JTextField nameField = new JTextField();
JTextField portField = new JTextField();
public ConfigDialog(JFrame parent, String server, int tcpport)
{
super(parent, "配置服务器地址和TCP端口", true);
this.serverName = server;
this.serverTcpPort = tcpport;
Container cp = getContentPane();
cp.setLayout(new BorderLayout());
JPanel configPanel = new JPanel(new GridLayout(2,2));
JPanel buttonPanel = new JPanel(new FlowLayout());
JLabel nameLabel = new JLabel("输入服务器主机名或IP地址");
JLabel portLabel = new JLabel("输入服务程序TCP端口号码");
nameField.setText(serverName);
portField.setText(String.valueOf(serverTcpPort));
configPanel.add(nameLabel);
configPanel.add(nameField);
configPanel.add(portLabel);
configPanel.add(portField);
JButton ok = new JButton("Ok");
ok.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
//如果是要设置端口号，对其进行合法性检测：
if ( true == portField.isEditable())
//合法就进行修改：
if (islegal())
{
ConfigDialog.this.serverTcpPort = Integer.parseInt(portField.getText());
dispose();
}
//非法时，显示出错信息，直到输入正确或取消为止：
else
{
portField.setText("");
JOptionPane.showMessageDialog(null, "输入了非数字或是端口号无效", "Wrong", JOptionPane.ERROR_MESSAGE);
}
//如果是输入主机名，就不进行检测：
else
{
ConfigDialog.this.serverName = nameField.getText();
dispose();
}
}
private boolean islegal()
{
int temp = 0;
boolean legal = true;
try
{
temp = Integer.parseInt(portField.getText());
} catch(NumberFormatException ep)
{
//如果输入中有非数值出现，就是非法的
legal = false;
}
//端口号要在1024到65535的范围之内
if (legal == true)
if (temp < 1024 || temp > 65536)
legal = false;
return legal;
}
});
JButton cancel = new JButton("Cancel");
cancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
dispose();
}
});
buttonPanel.add(ok);
buttonPanel.add(cancel);
cp.add(BorderLayout.CENTER, configPanel);
cp.add(BorderLayout.SOUTH, buttonPanel);
setSize(500, 120);
}
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