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1 //
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2 // Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
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3 // Copyright (C) 2002-2006 Constantin Kaplinsky. All Rights Reserved.
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4 //
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5 // This is free software; you can redistribute it and/or modify
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6 // it under the terms of the GNU General Public License as published by
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7 // the Free Software Foundation; either version 2 of the License, or
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8 // (at your option) any later version.
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9 //
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10 // This software is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 // GNU General Public License for more details.
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14 //
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15 // You should have received a copy of the GNU General Public License
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16 // along with this software; if not, write to the Free Software
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17 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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18 // USA.
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19 //
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20
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21 import java.awt.*;
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22 import java.awt.event.*;
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23
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24 //
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25 // The panel which implements the user authentication scheme
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26 //
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27
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28 class AuthPanel extends Panel implements ActionListener {
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29
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30 TextField passwordField;
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31 Button okButton;
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32
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33 //
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34 // Constructor.
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35 //
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36
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37 public AuthPanel(VncViewer viewer)
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38 {
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39 Label titleLabel = new Label("VNC Authentication", Label.CENTER);
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40 titleLabel.setFont(new Font("Helvetica", Font.BOLD, 18));
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41
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42 Label promptLabel = new Label("Password:", Label.CENTER);
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43
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44 passwordField = new TextField(10);
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45 passwordField.setForeground(Color.black);
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46 passwordField.setBackground(Color.white);
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47 passwordField.setEchoChar('*');
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48
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49 okButton = new Button("OK");
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50
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51 GridBagLayout gridbag = new GridBagLayout();
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52 GridBagConstraints gbc = new GridBagConstraints();
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53
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54 setLayout(gridbag);
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55
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56 gbc.gridwidth = GridBagConstraints.REMAINDER;
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57 gbc.insets = new Insets(0,0,20,0);
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58 gridbag.setConstraints(titleLabel,gbc);
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59 add(titleLabel);
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60
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61 gbc.fill = GridBagConstraints.NONE;
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62 gbc.gridwidth = 1;
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63 gbc.insets = new Insets(0,0,0,0);
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64 gridbag.setConstraints(promptLabel,gbc);
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65 add(promptLabel);
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66
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67 gridbag.setConstraints(passwordField,gbc);
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68 add(passwordField);
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69 passwordField.addActionListener(this);
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70
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71 // gbc.ipady = 10;
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72 gbc.gridwidth = GridBagConstraints.REMAINDER;
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73 gbc.fill = GridBagConstraints.BOTH;
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74 gbc.insets = new Insets(0,20,0,0);
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75 gbc.ipadx = 30;
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76 gridbag.setConstraints(okButton,gbc);
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77 add(okButton);
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78 okButton.addActionListener(this);
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79 }
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80
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81 //
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82 // Move keyboard focus to the default object, that is, the password
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83 // text field.
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84 //
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85
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86 public void moveFocusToDefaultField()
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87 {
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88 passwordField.requestFocus();
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89 }
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90
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91 //
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92 // This method is called when a button is pressed or return is
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93 // pressed in the password text field.
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94 //
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95
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96 public synchronized void actionPerformed(ActionEvent evt)
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97 {
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98 if (evt.getSource() == passwordField || evt.getSource() == okButton) {
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99 passwordField.setEnabled(false);
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100 notify();
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101 }
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102 }
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103
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104 //
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105 // Wait for user entering a password, and return it as String.
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106 //
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107
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108 public synchronized String getPassword() throws Exception
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109 {
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110 try {
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111 wait();
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112 } catch (InterruptedException e) { }
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113 return passwordField.getText();
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114 }
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115
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116 }
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