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TUserAuthenticationDialog.java

/*
*  Name:      TUserAuthenticationDialog.java
*  Author:    Rafael Jesus Alcantara Perez
*  Summary:   Dialog for authenticating an user
*  Date:      $Date: 2003/10/06 12:45:11 $
*  Revision:  $Revision: 1.6 $
*
*  Copyright (C) 2003  Rafael Jesus Alcantara Perez <rafa@dedalo-ing.com>
*
*  This program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  This program 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 General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
*  MA 02111-1307, USA.
*/

package org.mpcl.nui;

import java.awt.BorderLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingConstants;


public class TUserAuthenticationDialog
  extends    TAbstractDialog
  implements ActionListener
{

  private boolean   gIsAuthentic;

  private JButton   tAcceptButton;

  private IAuthenticator   tAuthenticator;

  private JTextField   tNameTextField;

  private JPasswordField   tPasswordField;

  private IResourceSupplier   tResourceSupplier;

  private String   yUserName;

  private String   yUserPassword;


  public static class _TEvents
  {

    public static final String   _kyAccept = "TUserAuthenticationDialog._TEvents._kyAccept";

    public static final String   _kyCancel = "TUserAuthenticationDialog._TEvents._kyCancel";

  }  // class _TEvents

  public static class _TNames
  {

    public static final String   _kyAccept = "org.mpcl.nui.TUserAuthenticationDialog._TNames._kyAccept";

    public static final String   _kyCancel = "org.mpcl.nui.TUserAuthenticationDialog._TNames._kyCancel";

    public static final String   _kyName = "org.mpcl.nui.TUserAuthenticationDialog._TNames._kyName";

    public static final String   _kyPassword = "org.mpcl.nui.TUserAuthenticationDialog._TNames._kyPassword";

    public static final String   _kyTitle = "org.mpcl.nui.TUserAuthenticationDialog._TNames._kyTitle";

  }  // class _TNames


  //
  //  C O N S T R U C T O R S
  //

  public TUserAuthenticationDialog ( IResourceSupplier tRESOURCE_SUPPLIER ,
                                     IAuthenticator    tAUTHENTICATOR     )
  {
    super (null, tRESOURCE_SUPPLIER.getText (_TNames._kyTitle), null, true);
    gIsAuthentic      = false;
    tAuthenticator    = tAUTHENTICATOR;
    tResourceSupplier = tRESOURCE_SUPPLIER;
    yUserName         = new String();
    yUserPassword     = null;
    tMainPanel.add (createDataSheetPanel(), BorderLayout.CENTER);
    tMainPanel.add (createButtonPanel(),    BorderLayout.SOUTH);
  }

  public TUserAuthenticationDialog ( IResourceSupplier tRESOURCE_SUPPLIER ,
                                     IAuthenticator    tAUTHENTICATOR     ,
                                     String            yDEFAULT_USER_NAME )
  {
    super (null, tRESOURCE_SUPPLIER.getText (_TNames._kyTitle), null, true);
    gIsAuthentic      = false;
    tAuthenticator    = tAUTHENTICATOR;
    tResourceSupplier = tRESOURCE_SUPPLIER;
    yUserName         = yDEFAULT_USER_NAME;
    yUserPassword     = null;
    tMainPanel.add (createDataSheetPanel(), BorderLayout.CENTER);
    tMainPanel.add (createButtonPanel(),    BorderLayout.SOUTH);
  }

  public void actionPerformed (ActionEvent tACTION_EVENT)
  {

    String   yCommand = tACTION_EVENT.getActionCommand();

    if ( yCommand.equals (_TEvents._kyAccept) )
    {
      yUserName     = new String (tNameTextField.getText());
      yUserPassword = new String (tPasswordField.getPassword());
      if ( tAuthenticator.authenticate (yUserName, yUserPassword) )
      {
        gIsAuthentic = true;
        hide();
      }
      else
      {
        yUserName     = null;
        yUserPassword = null;
        gIsAuthentic  = false;
      }
    }
    else if ( yCommand.equals (_TEvents._kyCancel) )
    {
      yUserName     = null;
      yUserPassword = null;
      gIsAuthentic  = false;
      hide();
    }

  }  // actionPerformed()

  public void initialize()
  {
    getRootPane().setDefaultButton (tAcceptButton);
    tNameTextField.requestFocus();
  }


  //
  //  S E L E C T O R S
  //

  private JPanel createButtonPanel()
  {

    JPanel    tButtonPanel  = new JPanel();
    JButton   tCancelButton = new JButton (tResourceSupplier.getText (_TNames._kyCancel));

    tAcceptButton = new JButton (tResourceSupplier.getText (_TNames._kyAccept));
    tAcceptButton.setActionCommand (_TEvents._kyAccept);
    tCancelButton.setActionCommand (_TEvents._kyCancel);
    tAcceptButton.addActionListener (this);
    tCancelButton.addActionListener (this);
    tAcceptButton.setMnemonic (tResourceSupplier.getMnemonic (_TNames._kyAccept));
    tCancelButton.setMnemonic (tResourceSupplier.getMnemonic (_TNames._kyCancel));
    tButtonPanel.setLayout (new BoxLayout (tButtonPanel, BoxLayout.X_AXIS));
    tButtonPanel.setBorder (BorderFactory.createEmptyBorder (_kiEmptyBorderLength, 0, 0, 0));
    tButtonPanel.add (Box.createHorizontalGlue());
    tButtonPanel.add (tAcceptButton);
    tButtonPanel.add (tCancelButton);
    return tButtonPanel;

  }  // createButtonPanel()

  private JPanel createDataSheetPanel()
  {

    GridBagConstraints   tGridBagConstraints;
    GridBagLayout        tGridBagLayout;
    JPanel               tDataSheetPanel;
    JLabel               tNameLabel;
    JLabel               tPasswordLabel;

    tDataSheetPanel     = new JPanel();
    tGridBagConstraints = new GridBagConstraints();
    tGridBagLayout      = new GridBagLayout();
    tNameLabel          = new JLabel (tResourceSupplier.getText (_TNames._kyName),     SwingConstants.LEFT);
    tPasswordLabel      = new JLabel (tResourceSupplier.getText (_TNames._kyPassword), SwingConstants.LEFT);
    tNameTextField      = new JTextField     (yUserName, 8);
    tPasswordField      = new JPasswordField (8);
    tNameLabel.setDisplayedMnemonic     (tResourceSupplier.getMnemonic (_TNames._kyName));
    tPasswordLabel.setDisplayedMnemonic (tResourceSupplier.getMnemonic (_TNames._kyPassword));
    tNameLabel.setLabelFor     (tNameTextField);
    tPasswordLabel.setLabelFor (tPasswordField);
    tDataSheetPanel.setBorder (createBorder());
    tDataSheetPanel.setLayout (tGridBagLayout);

    //
    //  User name label.
    //
    tGridBagConstraints.fill   = GridBagConstraints.VERTICAL;
    tGridBagConstraints.anchor = GridBagConstraints.WEST;
    tGridBagConstraints.gridx  = 0;
    tGridBagConstraints.gridy  = 0;
    tGridBagConstraints.ipadx  = 10;
    tGridBagConstraints.ipady  = 10;
    tGridBagLayout.setConstraints (tNameLabel, tGridBagConstraints);
    tDataSheetPanel.add (tNameLabel);

    //
    //  Name text field. It selects all the text.
    //
    tGridBagConstraints.gridx = 1;
    tGridBagLayout.setConstraints (tNameTextField, tGridBagConstraints);
    tNameTextField.selectAll();
    tDataSheetPanel.add (tNameTextField);

    //
    //  Password label.
    //
    tGridBagConstraints.gridx = 0;
    tGridBagConstraints.gridy = 1;
    tGridBagLayout.setConstraints (tPasswordLabel, tGridBagConstraints);
    tDataSheetPanel.add (tPasswordLabel);

    //
    //  Password text field.
    //
    tGridBagConstraints.gridx = 1;
    tGridBagLayout.setConstraints (tPasswordField, tGridBagConstraints);
    tDataSheetPanel.add (tPasswordField);
    return tDataSheetPanel;

  }  // createDataSheetPanel()


  //
  //  S E L E C T O R S
  //

  public String getName()
  {
    return yUserName;
  }

  public String getPassword()
  {
    return yUserPassword;
  }

  public boolean isAuthentic()
  {
    return gIsAuthentic;
  }

}  // class TUserAuthenticationDialog

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