connectdlg.java

一个聊天室的原代码

/*
 * Created on 2004-12-11
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package chatclient;

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

/**
 * @author Lance
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class ConnectDlg extends JDialog implements PropertyChangeListener{
	JTextField serverAddrField;
	JTextField userNameField;
	JOptionPane optionPane;
	String serverAddr, userName;
	int value=-1;
	public ConnectDlg(Frame frame){
		super(frame, "连接", true);
		serverAddrField=new JTextField(15);
		userNameField=new JTextField(20);
		Object[] array={"服务器地址:", serverAddrField, "用户名:", userNameField};
		optionPane=new JOptionPane(
				array,
				JOptionPane.QUESTION_MESSAGE,
				JOptionPane.OK_CANCEL_OPTION);
		setContentPane(optionPane);
		
		optionPane.addPropertyChangeListener(this);
		setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
		addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent we){
				setVisible(false);
			}
		});
	}

	/* (non-Javadoc)
	 * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
	 */
	public void propertyChange(PropertyChangeEvent e) {
		// TODO Auto-generated method stub
		String prop=e.getPropertyName();
		if(isVisible()
				&&(e.getSource()==optionPane)
				&&(JOptionPane.VALUE_PROPERTY.equals(prop)
						||JOptionPane.INPUT_VALUE_PROPERTY.equals(prop))){
			if(optionPane.getValue()==JOptionPane.UNINITIALIZED_VALUE){
				return;
			}
			value=((Integer)optionPane.getValue()).intValue();
			optionPane.setValue(JOptionPane.UNINITIALIZED_VALUE);
			if(value==JOptionPane.OK_OPTION){
				if("".equals(serverAddrField.getText())
						||"".equals(userNameField.getText())){
					JOptionPane.showMessageDialog(this, "输入用户名或服务器地址");
					if("".equals(serverAddrField.getText())){
						serverAddrField.requestFocus();
					}else if("".equals(userNameField.getText())){
						userNameField.requestFocus();
					}
				}else{
					setServerAddr(serverAddrField.getText());
					setUserName(userNameField.getText());
					setVisible(false);
				}
			}else{
				setVisible(false);
			}
		}
		
	}
	public String getServerAddr(){
		return serverAddr;
	}
	public String getUserName(){
		return userName;
	}
	public void setServerAddr(String host){
		this.serverAddr=host;
	}
	public void setUserName(String userName){
		this.userName=userName;
	}
	public int getValue(){
		return value;
	}

}