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1 package myVncClient;
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0
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2 //
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3 // Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
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4 // Copyright (C) 2002-2006 Constantin Kaplinsky. All Rights Reserved.
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5 //
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6 // This is free software; you can redistribute it and/or modify
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7 // it under the terms of the GNU General Public License as published by
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8 // the Free Software Foundation; either version 2 of the License, or
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9 // (at your option) any later version.
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10 //
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11 // This software is distributed in the hope that it will be useful,
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12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 // GNU General Public License for more details.
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15 //
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16 // You should have received a copy of the GNU General Public License
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17 // along with this software; if not, write to the Free Software
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18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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19 // USA.
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20 //
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21
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22 import java.awt.*;
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23 import java.awt.event.*;
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24
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25 //
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26 // The panel which implements the user authentication scheme
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27 //
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28
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29 class AuthPanel extends Panel implements ActionListener {
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30
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31 TextField passwordField;
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32 Button okButton;
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33
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34 //
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35 // Constructor.
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36 //
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37
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38 public AuthPanel(VncViewer viewer)
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39 {
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40 Label titleLabel = new Label("VNC Authentication", Label.CENTER);
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41 titleLabel.setFont(new Font("Helvetica", Font.BOLD, 18));
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42
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43 Label promptLabel = new Label("Password:", Label.CENTER);
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44
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45 passwordField = new TextField(10);
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46 passwordField.setForeground(Color.black);
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47 passwordField.setBackground(Color.white);
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48 passwordField.setEchoChar('*');
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49
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50 okButton = new Button("OK");
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51
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52 GridBagLayout gridbag = new GridBagLayout();
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53 GridBagConstraints gbc = new GridBagConstraints();
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54
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55 setLayout(gridbag);
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56
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57 gbc.gridwidth = GridBagConstraints.REMAINDER;
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58 gbc.insets = new Insets(0,0,20,0);
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59 gridbag.setConstraints(titleLabel,gbc);
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60 add(titleLabel);
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61
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62 gbc.fill = GridBagConstraints.NONE;
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63 gbc.gridwidth = 1;
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64 gbc.insets = new Insets(0,0,0,0);
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65 gridbag.setConstraints(promptLabel,gbc);
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66 add(promptLabel);
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67
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68 gridbag.setConstraints(passwordField,gbc);
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69 add(passwordField);
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70 passwordField.addActionListener(this);
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71
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72 // gbc.ipady = 10;
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73 gbc.gridwidth = GridBagConstraints.REMAINDER;
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74 gbc.fill = GridBagConstraints.BOTH;
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75 gbc.insets = new Insets(0,20,0,0);
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76 gbc.ipadx = 30;
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77 gridbag.setConstraints(okButton,gbc);
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78 add(okButton);
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79 okButton.addActionListener(this);
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80 }
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81
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82 //
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83 // Move keyboard focus to the default object, that is, the password
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84 // text field.
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85 //
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86
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87 public void moveFocusToDefaultField()
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88 {
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89 passwordField.requestFocus();
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90 }
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91
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92 //
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93 // This method is called when a button is pressed or return is
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94 // pressed in the password text field.
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95 //
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96
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97 public synchronized void actionPerformed(ActionEvent evt)
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98 {
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99 if (evt.getSource() == passwordField || evt.getSource() == okButton) {
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100 passwordField.setEnabled(false);
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101 notify();
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102 }
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103 }
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104
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105 //
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106 // Wait for user entering a password, and return it as String.
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107 //
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108
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109 public synchronized String getPassword() throws Exception
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110 {
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111 try {
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112 wait();
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113 } catch (InterruptedException e) { }
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114 return passwordField.getText();
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115 }
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116
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117 }
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