pwdtext.java

NAS文件器的模拟

package clientGui;

import java.awt.*;

import javax.swing.*;
import javax.swing.event.DocumentEvent;

import java.awt.event.*;

public class PWDText extends JFrame{
	
	private JPanel mainPanel = null;
	private JPanel userNamePanel = null;
	private JPanel passwordPanel = null;
	private JLabel userName = null;
	private JLabel password = null;
	private JTextField inputUserName = null;
	private JPasswordField inputPWD = null;
	private JButton login = null;
	
	static boolean visible = false;
	private String getUserName;
	private String getPWD;
	private ClientGui clientGui = null;
	
	private JLabel getUserName() {
		if (userName == null) {
			userName = new JLabel("username:");
			userName.setBounds(0, 0, 10, 10);
		}
		return userName;
	}
	
	private JTextField getInputUserName() {
		if (inputUserName == null) {
			inputUserName = new JTextField(15);
			inputUserName.setEditable(true);
			inputUserName.setText("");
		}
		return inputUserName;
	}
	
	private JLabel getPassword() {
		if (password == null) {
			password = new JLabel("password:");
			password.setBounds(0,12,10,10);
		}
		return password;
	}
	
	private JPasswordField getInputPWD() {
		if (inputPWD == null) {
			inputPWD = new JPasswordField("",15);
			inputPWD.setEditable(true);
			inputPWD.setEchoChar('*');
		}
		return inputPWD;
	}
	
	private JButton getLoginButton() {
		if (login == null) {
			login = new JButton("login");
		}
		return login;
	}
	
	private JPanel getUserPanel() {
		if (userNamePanel == null) {
			userNamePanel = new JPanel();
			BorderLayout g = new BorderLayout();
			g.setHgap(1);
			g.setVgap(2);
			userNamePanel.setLayout(g);
			userNamePanel.add(getUserName(),BorderLayout.WEST);
			userNamePanel.add(getInputUserName(),BorderLayout.EAST);
		}
		return userNamePanel;
	}
	
	private JPanel getPasswordPanel() {
		if (passwordPanel == null) {
			passwordPanel = new JPanel();
			BorderLayout g = new BorderLayout();
			g.setHgap(1);
			g.setVgap(2);
			passwordPanel.setLayout(g);
			passwordPanel.add(getPassword(),BorderLayout.WEST);
			passwordPanel.add(getInputPWD(),BorderLayout.EAST);
		}
		return passwordPanel;
	}
	
	private JPanel getMainPanel() {
		if (mainPanel == null) {
			mainPanel = new JPanel();
			BorderLayout g = new BorderLayout();
			g.setHgap(1);
			g.setVgap(2);
			mainPanel.setLayout(g);
			mainPanel.add(getUserPanel(), java.awt.BorderLayout.NORTH);
			mainPanel.add(getPasswordPanel(), java.awt.BorderLayout.CENTER);
			mainPanel.add(getLoginButton(), java.awt.BorderLayout.SOUTH);
		}
		return mainPanel;
	}
	
	private void initialize() {
		visible = true;
		this.setContentPane(getMainPanel());
		this.setTitle("login");
		this.setBounds(390, 310, 250, 113);
		this.setVisible(true);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		login.addActionListener(new ActionListener(){
	  		public void actionPerformed(ActionEvent event) {
	  			if(!inputUserName.getText().equals("") &&
	  					!String.valueOf((inputPWD.getPassword())).equals("")){
	  				getUserName = inputUserName.getText();
	  				getPWD = String.valueOf(inputPWD.getPassword());
	  				boolean ok = clientGui.do_login(getUserName,getPWD);
	  				if (!ok) {
	  					JOptionPane.showMessageDialog(null, "Login unsuccesful", "ERROR", JOptionPane.ERROR_MESSAGE);
	  				}
	  				else {
	  					visible = false;
	  				}
	  			}
	  			else if (inputUserName.getText().equals("")){
	  				JOptionPane.showMessageDialog(null, "Username can't be Empty", "ERROR", JOptionPane.ERROR_MESSAGE);
	  			}
	  			else if (String.valueOf((inputPWD.getPassword())).equals("")){
	  				JOptionPane.showMessageDialog(null, "Password can't be Empty", "ERROR", JOptionPane.ERROR_MESSAGE);
	  			}
	  			else {
	  				
	  			}
	  			if (!visible) {
	  				setThisVisible(false);
	  			}
	  		}
	  	});
	}
	
	public void setThisVisible(boolean v) {
		this.setVisible(v);
	}
	
	public String returnUserName() {
		return getUserName;
	}
	
	public String returnPWD() {
		return getPWD;
	}
	
	public PWDText(ClientGui cg) {
		super();
		clientGui = cg;
		initialize();
	}
	
	public void setupClosing() {
		addWindowListener(new WindowAdapter() {
		    public void windowClosing(WindowEvent e) {
		    System.exit(0);
		   }
		});
	}
	
	public void changedUpdate(DocumentEvent e) {
	}

	public void insertUpdate(DocumentEvent e) {
	}

	public void removeUpdate(DocumentEvent e) {
	}
}