bslogindialog.java

一款即时通讯软件

package edu.ou.kmi.buddyspace.gui;

/*
 * BSLoginDialog.java
 *
 * Project: BuddySpace
 * (C) Copyright Knowledge Media Institute 2002
 *
 *
 * Created on 15 July 2002, 10:22
 */

import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.beans.*; // Property change stuff

import edu.ou.kmi.buddyspace.core.BSCore;

/**
 * Dialog for entering login and registration information.
 *
 * @author  Jiri Komzak, Knowledge Media Institute, Open University, United Kingdom
 */
public class BSLoginDialog extends javax.swing.JDialog {
    
    private BSMainFrame mainFrame;
    private JTextField loginTextField;
    private JPasswordField passwordField;
    private JTextField resourceTextField;
    private JTextField hostTextField;
    private JTextField portTextField;
    //private JCheckBox newAccountCheckBox;
    private JCheckBox sslCheckBox;
    private JCheckBox saveCheckBox;
    private JOptionPane optionPane;
    
    public String username = null;
    public String server = null;
    public String resource = null;
    public String password = null;
    public int port;
    public boolean newAccount;
    public boolean useSSL;
    public boolean saveValues = false;
    
    /** Creates new form BSLoginDialog */
    public BSLoginDialog(BSMainFrame parent, String username, String password,
                         String resource, String server,
                         int port, boolean newAccount) {
                             
        this(parent, username, password, resource, server, port, newAccount, false);
    }
                               
    /** Creates new form BSLoginDialog */
    public BSLoginDialog(BSMainFrame parent, String username, String password,
                         String resource, String server,
                         int port, boolean newAccount, boolean useSSL) {
                             
        super(parent, "Login", true);
        
        this.mainFrame = parent;
        
        loginTextField = new JTextField(username);
        passwordField = new JPasswordField(password);
        resourceTextField = new JTextField(resource);
        hostTextField = new JTextField(server);
        portTextField = new JTextField(Integer.toString(port));
        sslCheckBox = new JCheckBox("Use SSL connection", useSSL);
        saveCheckBox = new JCheckBox("Save the 5 values above", saveValues);
        //newAccountCheckBox = new JCheckBox("New account", newAccount);
        
        sslCheckBox.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (sslCheckBox.isSelected() 
                    && "5222".equals(portTextField.getText())) {
                        portTextField.setText("5223");
                }
                else if (!sslCheckBox.isSelected() 
                    && "5223".equals(portTextField.getText())) {
                        portTextField.setText("5222");
                }
            }
        });
        
        Object[] fields = {"Login: ", loginTextField,
                           "Password: ", passwordField,
                           "Resource: ", resourceTextField,
                           "Host: ", hostTextField,
                           "Port: ", portTextField,
                           sslCheckBox,
                           saveCheckBox//,
                           //newAccountCheckBox,
                           };
        
        final String okButton = "Log in";
        final String cancelButton = "Cancel";
        final String newAccountButton = "New account";
        final String helpButton = "Help";
        Object[] options = {okButton, newAccountButton, cancelButton, helpButton};

        optionPane = new JOptionPane(fields, 
                                     JOptionPane.PLAIN_MESSAGE,
                                     JOptionPane.OK_CANCEL_OPTION,
                                     null,
                                     options,
                                     options[0]);
        setContentPane(optionPane);
        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);

        pack();
        setLocationRelativeTo(parent);
        
        // handles actions
        optionPane.addPropertyChangeListener(new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent e) {
                String prop = e.getPropertyName();
			
                if (isVisible() 
                    && (e.getSource() == optionPane)
                    && (prop.equals(JOptionPane.VALUE_PROPERTY) ||
                      prop.equals(JOptionPane.INPUT_VALUE_PROPERTY))) {
                    Object value = optionPane.getValue();

                    if (value == JOptionPane.UNINITIALIZED_VALUE) {
                        // ignore reset
                        return;
                    }

                    // Reset the JOptionPane's value.
                    // If you don't do this, then if the user
                    // presses the same button next time, no
                    // property change event will be fired.
                    optionPane.setValue(JOptionPane.UNINITIALIZED_VALUE);

                    if (value.equals(okButton)) {
                        connect(false);
                        return;
                    }
                    else if (value.equals(newAccountButton)) {
                        connect(true);
                        return;
                    }
                    else if (value.equals(cancelButton)) {
                        setVisible(false);
                    }
                    else if (value.equals(helpButton)) {
                        JOptionPane.showMessageDialog(BSLoginDialog.this, 
                            "If you have got an existing jabber account\n"
                            + "'log in' using your account details.\n\n"
                            + "If you don't have one,\n"
                            + "fill in the values and create a 'new account'.\n"
                            + "Next time you'll just 'log in'.",
                            "Login help", JOptionPane.PLAIN_MESSAGE);
                    }
                }
            }
        });
    }
    
    /** 
     * Stores entered information into inner variables.
     * This actually does not connect!
     */
    private void connect(boolean newAccount) {
        username = loginTextField.getText();
        password = new String(passwordField.getPassword());
        resource = resourceTextField.getText();
        server = hostTextField.getText();
        //newAccount = newAccountCheckBox.isSelected();
        this.newAccount = newAccount;
        saveValues = saveCheckBox.isSelected();
        useSSL = sslCheckBox.isSelected();
        
        if (username == null || username.equals("") || 
            resource == null || resource.equals("") ||
            server == null || server.equals("")) {
            JOptionPane.showMessageDialog(this, 
                                              "You must specify your login,\n"
                                              + "host (e.g. 'jabber.org' or 'jabber.open.ac.uk'),\n"
                                              + "resource (e.g. 'My laptop' or 'BuddySpace')\n"
                                              + "and port (usually '5222')",
                                              "Error", 
                                              JOptionPane.ERROR_MESSAGE);
            username = password = resource = server = null;
            return;
        }

        try {
            port = Integer.parseInt(portTextField.getText());
        } catch (NumberFormatException e) {
            JOptionPane.showMessageDialog(this, 
                                          "Port must be a number",
                                          "Error", 
                                          JOptionPane.ERROR_MESSAGE);
            username = password = resource = server = null;
            return;
        }
        
        setVisible(false);
    }

}