AuthDialog.java

package ciscoroutertool.gui;

import javax.swing.JOptionPane;

/**
 * The dialog that forces users to log in to the application
 * @version 0.01ALPHA
 * @author Andrew Johnston
 */
public class AuthDialog extends javax.swing.JFrame {

    /**
     * The parent window
     */
    private MainGUI parent;

    /**
     * Creates new form AuthDialog
     */
    public AuthDialog(MainGUI _parent) {
        initComponents();
        parent = _parent;
        parent.setVisible(false);

    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        lblPrompt = new javax.swing.JLabel();
        lblUsername = new javax.swing.JLabel();
        lblPassword = new javax.swing.JLabel();
        fieldPassword = new javax.swing.JPasswordField();
        fieldUsername = new javax.swing.JTextField();
        btnClose = new javax.swing.JButton();
        btnLogin = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Please Log In");

        lblPrompt.setText("You must provide authentication to use this application!");

        lblUsername.setText("Username: ");

        lblPassword.setText("Password: ");

        btnClose.setText("Close");
        btnClose.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnCloseActionPerformed(evt);
            }
        });

        btnLogin.setText("Log In");
        btnLogin.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnLoginActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(lblPassword)
                            .addComponent(lblUsername))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(fieldPassword, javax.swing.GroupLayout.DEFAULT_SIZE, 100, Short.MAX_VALUE)
                            .addComponent(fieldUsername)))
                    .addComponent(lblPrompt, javax.swing.GroupLayout.PREFERRED_SIZE, 400, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(35, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(btnLogin)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(btnClose)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(lblPrompt)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(lblUsername)
                    .addComponent(fieldUsername, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(lblPassword)
                    .addComponent(fieldPassword, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btnClose)
                    .addComponent(btnLogin))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    /**
     * Closes the Authentication dialog (closing the application).
     * @param evt The ActionEvent object with relevant data
     */ 
    private void btnCloseActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnCloseActionPerformed
        System.exit(0);
    }//GEN-LAST:event_btnCloseActionPerformed

    /**
     * Checks the credentials and allows login if the credentials are correct.
     * @param evt The ActionEvent object with relevant data
     */
    private void btnLoginActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnLoginActionPerformed
        String username = fieldUsername.getText().trim();
        String password = new String(fieldPassword.getPassword());
        if (MainGUI.settingsManager.checkAuth(username, password)) {
            parent.setVisible(true);
            parent.setEnabled(true);
            this.dispose();
        }
        else {
            JOptionPane.showMessageDialog(this,
                    "Please reenter your credentials", 
                    "Invalid ID or Password",
                    JOptionPane.ERROR_MESSAGE);
        }
    }//GEN-LAST:event_btnLoginActionPerformed


    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton btnClose;
    private javax.swing.JButton btnLogin;
    private javax.swing.JPasswordField fieldPassword;
    private javax.swing.JTextField fieldUsername;
    private javax.swing.JLabel lblPassword;
    private javax.swing.JLabel lblPrompt;
    private javax.swing.JLabel lblUsername;
    // End of variables declaration//GEN-END:variables
}