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1
14
15 package chatserver.client;
16
17 import java.awt.*;
18 import java.awt.event.*;
19 import javax.swing.*;
20 import javax.swing.event.*;
21 import javax.swing.border.*;
22 import java.io.IOException  ;
23
24
28 public class LoginDialog extends JDialog {
29
30 private JPanel topPanel;
31 private JPanel ipPanel;
32 private JPanel authPanel;
33 private JPanel buttonPanel;
34
35 private JLabel productName;
36 private JLabel ipLabel;
37 private JTextField ipField;
38 private JLabel portLabel;
39 private JTextField portField;
40 private JLabel loginLabel;
41 private JTextField loginField;
42 private JLabel passwordLabel;
43 private JPasswordField passwordField;
44 private JButton loginButton;
45 private JButton cancelButton;
46
47 private String statusTxt1 = "<html><font style=\"font-size:15pt;color:#535353\"><b>";
48 private String statusTxt2 = "</b></font>";
49 private GridBagConstraints gbc;
50
51 private String values[] = new String [4];
53 private boolean isOk = false;
54
55 public LoginDialog(Frame parent, String args[]) {
56 super(parent, "Please Login");
57 gbc = new GridBagConstraints();
58 productName = new JLabel(statusTxt1+
59 "Chat Login"+statusTxt2,JLabel.CENTER);
60
61 ipLabel = new JLabel("IP Address");
62 if(args!=null && args.length>=2)
63 ipField = new JTextField(args[1]);
64 else
65 ipField = new JTextField("127.0.0.1");
66 portLabel = new JLabel("Port");
67 if(args!=null && args.length>=3)
68 ipField = new JTextField(args[2]);
69 else
70 portField = new JTextField("7412");
71
72 loginLabel = new JLabel("Login");
73 loginField = new JTextField("user1");
74 passwordLabel = new JLabel("Password");
75 passwordField = new JPasswordField("user1");
76
77 loginButton = new JButton("Login");
78 loginButton.setMnemonic('L');
79 cancelButton = new JButton("Cancel");
80 cancelButton.setMnemonic('C');
81 cancelButton.addActionListener( new ActionListener() {
82 public void actionPerformed(ActionEvent e) {
83 hide();
84 }
85 });
86
87 ipField.addActionListener(new ActionListener() {
89 public void actionPerformed(ActionEvent e) {
90 portField.requestFocus();
91 }
92 });
93 portField.addActionListener(new ActionListener() {
94 public void actionPerformed(ActionEvent e) {
95 loginField.requestFocus();
96 }
97 });
98 loginField.addActionListener(new ActionListener() {
99 public void actionPerformed(ActionEvent e) {
100 passwordField.requestFocus();
101 }
102 });
103
104 ActionListener loginAl = new ActionListener() {
105 public void actionPerformed(ActionEvent e) {
106 isOk = false;
107 if(ipField.getText().equals("")) {
108 showError("Blank IP Address");
109 return;
110 }
111 if(portField.getText().equals("")) {
112 showError("Blank Port Number");
113 return;
114 } else {
115 try {
116 Integer.parseInt(portField.getText());
117 } catch(Exception ex) {
118 showError("Bad Port Number.");
119 return;
120 }
121 }
122 if(loginField.getText().equals("")) {
123 showError("Blank Login");
124 return;
125 }
126 char p[] = passwordField.getPassword();
127 if(p==null || p.length==0) {
128 showError("Blank password");
129 return;
130 }
131 p = null;
132 isOk = true;
133 hide();
134 }
135 };
136
137 loginButton.addActionListener(loginAl);
138 passwordField.addActionListener(loginAl);
139
140 cancelButton.addActionListener( new ActionListener() {
141 public void actionPerformed(ActionEvent e) {
142 isOk = false;
143 hide();
144 }
145 });
146
148 Container cp = getContentPane();
149
150 topPanel = new JPanel();
152 topPanel.setLayout(new GridBagLayout());
153 gbc.insets = new Insets( 2, 2, 2, 2 );
154 gbc.weighty = 0.0;
155 gbc.weightx = 0.0;
156 gbc.gridx = 0;
157 gbc.gridy = 0;
158 gbc.gridheight = 1;
159 gbc.gridwidth = 1;
160 gbc.anchor = GridBagConstraints.CENTER;
161 gbc.fill = GridBagConstraints.NONE;
162 topPanel.add(productName, gbc);
163
164 ipPanel = new JPanel();
166 ipPanel.setLayout(new GridBagLayout());
167 gbc.gridx = 0;
168 gbc.gridy = 0;
169 gbc.weightx = 0.0;
170 gbc.weighty = 0.0;
171 gbc.gridheight = 1;
172 gbc.gridwidth = 1;
173 gbc.anchor = GridBagConstraints.WEST;
174 gbc.fill = GridBagConstraints.NONE;
175 ipPanel.add(ipLabel, gbc);
176
177 gbc.gridx = 1;
178 gbc.gridy = 0;
179 gbc.weightx = 1.0;
180 gbc.fill = GridBagConstraints.BOTH;
181 ipPanel.add(ipField, gbc);
182
183 gbc.gridx = 0;
184 gbc.gridy = 1;
185 gbc.weightx = 0.0;
186 gbc.fill = GridBagConstraints.NONE;
187 ipPanel.add(portLabel, gbc);
188
189 gbc.gridx = 1;
190 gbc.gridy = 1;
191 gbc.weightx = 1.0;
192 gbc.fill = GridBagConstraints.BOTH;
193 ipPanel.add(portField, gbc);
194 ipPanel.setBorder(BorderFactory.createTitledBorder(
195 new EtchedBorder(),"Location"));
196
197 authPanel = new JPanel();
199 authPanel.setLayout(new GridBagLayout());
200 gbc.gridx = 0;
201 gbc.gridy = 0;
202 gbc.weightx = 0.0;
203 gbc.weighty = 0.0;
204 gbc.gridheight = 1;
205 gbc.gridwidth = 1;
206 gbc.anchor = GridBagConstraints.WEST;
207 gbc.fill = GridBagConstraints.NONE;
208 authPanel.add(loginLabel, gbc);
209
210 gbc.gridx = 1;
211 gbc.gridy = 0;
212 gbc.weightx = 1.0;
213 gbc.fill = GridBagConstraints.BOTH;
214 authPanel.add(loginField, gbc);
215
216 gbc.gridx = 0;
217 gbc.gridy = 1;
218 gbc.weightx = 0.0;
219 gbc.fill = GridBagConstraints.NONE;
220 authPanel.add(passwordLabel, gbc);
221
222 gbc.gridx = 1;
223 gbc.gridy = 1;
224 gbc.weightx = 1.0;
225 gbc.fill = GridBagConstraints.BOTH;
226 authPanel.add(passwordField, gbc);
227 authPanel.setBorder(BorderFactory.createTitledBorder(
228 new EtchedBorder(),"Authentication"));
229
230 buttonPanel = new JPanel();
232 buttonPanel.setLayout(new GridBagLayout());
233 gbc.gridx = 0;
234 gbc.gridy = 0;
235 gbc.weightx = 0.0;
236 gbc.weighty = 0.0;
237 gbc.gridheight = 1;
238 gbc.gridwidth = 1;
239 gbc.anchor = GridBagConstraints.CENTER;
240 gbc.fill = GridBagConstraints.NONE;
241 buttonPanel.add(loginButton, gbc);
242
243 gbc.gridx = 1;
244 buttonPanel.add(cancelButton, gbc);
245
246 cp.setLayout(new GridBagLayout());
247 gbc.gridx = 0;
248 gbc.gridy = 0;
249 gbc.weightx = 1.0;
250 gbc.weighty = 1.0;
251 gbc.gridheight = 1;
252 gbc.gridwidth = 1;
253 gbc.anchor = GridBagConstraints.CENTER;
254 gbc.fill = GridBagConstraints.HORIZONTAL;
255 cp.add(topPanel,gbc);
256 gbc.fill = GridBagConstraints.BOTH;
257 gbc.gridy = 1;
258 cp.add(ipPanel,gbc);
259 gbc.fill = GridBagConstraints.BOTH;
260 gbc.gridy = 2;
261 cp.add(authPanel,gbc);
262 gbc.fill = GridBagConstraints.HORIZONTAL;
263 gbc.gridy = 3;
264 cp.add(buttonPanel,gbc);
265 pack();
266 setSize(240,250);
267 setResizable(false);
268 setModal(true);
269 centerWindow(this);
270 }
271
272 private void showError(String msg) {
273 JOptionPane.showMessageDialog(LoginDialog.this,
274 msg, "Error", JOptionPane.ERROR_MESSAGE);
275 }
276
277 public String [] getValues(){
278 values[0] = ipField.getText();
279 values[1] = portField.getText();
280 values[2] = loginField.getText();
281 values[3] = new String (passwordField.getPassword());
282 return values;
283 }
284
285 public boolean isOk(){
286 return isOk;
287 }
288
289 public void clearStatus(){
290 isOk = false;
291 }
292
293 public static void centerWindow(Window window) {
294 Dimension dim = window.getToolkit().getScreenSize();
295 window.setLocation(dim.width/2 - window.getWidth()/2,
296 dim.height/2 - window.getHeight()/2);
297 }
298 }
299 |
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