LoginDialog.java

/*
 * This file is part of ReqTracker.
 *
 * Copyright (C) 2015 Taleh Didover, Florian Gerdes, Dmitry Gorelenkov,
 *     Rajab Hassan Kaoneka, Katsiaryna Krauchanka, Tobias Polzer,
 *     Gayathery Sathya, Lukas Tajak
 *
 * ReqTracker is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * ReqTracker is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with ReqTracker.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.fau.osr.gui.Authentication;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.border.LineBorder;

/**
 * GUI to get login details
 * @author Gayathery
 *
 */
public class LoginDialog extends JDialog {
    
    private JTextField tfUsername;
    private JPasswordField pfPassword;
    private JLabel lbUsername;
    private JLabel lbPassword;
    private JButton btnLogin;
    private JButton btnCancel;
    private boolean succeeded;
 
    public LoginDialog(Frame parent,String title) {
        super(parent, title, true);
        //
        JPanel panel = new JPanel(new GridBagLayout());
        GridBagConstraints cs = new GridBagConstraints();
 
        cs.fill = GridBagConstraints.HORIZONTAL;
 
        lbUsername = new JLabel("Username: ");
        cs.gridx = 0;
        cs.gridy = 0;
        cs.gridwidth = 1;
        panel.add(lbUsername, cs);
 
        tfUsername = new JTextField(20);
        cs.gridx = 1;
        cs.gridy = 0;
        cs.gridwidth = 2;
        panel.add(tfUsername, cs);
 
        lbPassword = new JLabel("Password: ");
        cs.gridx = 0;
        cs.gridy = 1;
        cs.gridwidth = 1;
        panel.add(lbPassword, cs);
 
        pfPassword = new JPasswordField(25);
        cs.gridx = 1;
        cs.gridy = 1;
        cs.gridwidth = 2;
        panel.add(pfPassword, cs);
        panel.setBorder(new LineBorder(Color.GRAY));
 
        btnLogin = new JButton("Login");
 
        btnLogin.addActionListener(new ActionListener() {
 
            public void actionPerformed(ActionEvent e) {
                if (Login.authenticate(getUsername(), getPassword())) {
                    JOptionPane.showMessageDialog(LoginDialog.this,
                            "Welcome " + getUsername(),
                            title,
                            JOptionPane.INFORMATION_MESSAGE);
                    succeeded = true;
                    dispose();
                } else {
                    JOptionPane.showMessageDialog(LoginDialog.this,
                            "Invalid username or password",
                            title,
                            JOptionPane.ERROR_MESSAGE);
                    // reset username and password
                    tfUsername.setText("");
                    pfPassword.setText("");
                    succeeded = false;
 
                }
            }
        });
        btnCancel = new JButton("Cancel");
        btnCancel.addActionListener(new ActionListener() {
 
            public void actionPerformed(ActionEvent e) {
                dispose();
            }
        });
        JPanel bp = new JPanel();
        bp.add(btnLogin);
        bp.add(btnCancel);
 
        getContentPane().add(panel, BorderLayout.CENTER);
        getContentPane().add(bp, BorderLayout.PAGE_END);
 
        pack();
        setResizable(false);
        setLocationRelativeTo(parent);
    }
 
    public String getUsername() {
        return tfUsername.getText().trim();
    }
 
    public String getPassword() {
        return new String(pfPassword.getPassword());
    }
 
    public boolean isSucceeded() {
        return succeeded;
    }
}