📄 logindialog.java
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/*
* This file is part of the QuickServer library
* Copyright (C) 2003-2005 QuickServer.org
*
* Use, modification, copying and distribution of this software is subject to
* the terms and conditions of the GNU Lesser General Public License.
* You should have received a copy of the GNU LGP License along with this
* library; if not, you can download a copy from <http://www.quickserver.org/>.
*
* For questions, suggestions, bug-reports, enhancement-requests etc.
* visit http://www.quickserver.org
*
*/
package chatserver.client;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.io.IOException;
/**
* Login Dialog GUI
* @author Akshathkumar Shetty
*/
public class LoginDialog extends JDialog {
private JPanel topPanel;
private JPanel ipPanel;
private JPanel authPanel;
private JPanel buttonPanel;
private JLabel productName;
private JLabel ipLabel;
private JTextField ipField;
private JLabel portLabel;
private JTextField portField;
private JLabel loginLabel;
private JTextField loginField;
private JLabel passwordLabel;
private JPasswordField passwordField;
private JButton loginButton;
private JButton cancelButton;
private String statusTxt1 = "<html><font style=\"font-size:15pt;color:#535353\"><b>";
private String statusTxt2 = "</b></font>";
private GridBagConstraints gbc;
//for storing the values
private String values[] = new String[4];
private boolean isOk = false;
public LoginDialog(Frame parent, String args[]) {
super(parent, "Please Login");
gbc = new GridBagConstraints();
productName = new JLabel(statusTxt1+
"Chat Login"+statusTxt2,JLabel.CENTER);
ipLabel = new JLabel("IP Address");
if(args!=null && args.length>=2)
ipField = new JTextField(args[1]);
else
ipField = new JTextField("127.0.0.1");
portLabel = new JLabel("Port");
if(args!=null && args.length>=3)
ipField = new JTextField(args[2]);
else
portField = new JTextField("7412");
loginLabel = new JLabel("Login");
loginField = new JTextField("user1");
passwordLabel = new JLabel("Password");
passwordField = new JPasswordField("user1");
loginButton = new JButton("Login");
loginButton.setMnemonic('L');
cancelButton = new JButton("Cancel");
cancelButton.setMnemonic('C');
cancelButton.addActionListener( new ActionListener() {
public void actionPerformed(ActionEvent e) {
hide();
}
});
//--- Action
ipField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
portField.requestFocus();
}
});
portField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
loginField.requestFocus();
}
});
loginField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
passwordField.requestFocus();
}
});
ActionListener loginAl = new ActionListener() {
public void actionPerformed(ActionEvent e) {
isOk = false;
if(ipField.getText().equals("")) {
showError("Blank IP Address");
return;
}
if(portField.getText().equals("")) {
showError("Blank Port Number");
return;
} else {
try {
Integer.parseInt(portField.getText());
} catch(Exception ex) {
showError("Bad Port Number.");
return;
}
}
if(loginField.getText().equals("")) {
showError("Blank Login");
return;
}
char p[] = passwordField.getPassword();
if(p==null || p.length==0) {
showError("Blank password");
return;
}
p = null;
isOk = true;
hide();
}
};
loginButton.addActionListener(loginAl);
passwordField.addActionListener(loginAl);
cancelButton.addActionListener( new ActionListener() {
public void actionPerformed(ActionEvent e) {
isOk = false;
hide();
}
});
//---- Action
Container cp = getContentPane();
//--- Top Panel
topPanel = new JPanel();
topPanel.setLayout(new GridBagLayout());
gbc.insets = new Insets( 2, 2, 2, 2 );
gbc.weighty = 0.0;
gbc.weightx = 0.0;
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridheight = 1;
gbc.gridwidth = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.fill = GridBagConstraints.NONE;
topPanel.add(productName, gbc);
//-- IP Panel
ipPanel = new JPanel();
ipPanel.setLayout(new GridBagLayout());
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 0.0;
gbc.weighty = 0.0;
gbc.gridheight = 1;
gbc.gridwidth = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.fill = GridBagConstraints.NONE;
ipPanel.add(ipLabel, gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.fill = GridBagConstraints.BOTH;
ipPanel.add(ipField, gbc);
gbc.gridx = 0;
gbc.gridy = 1;
gbc.weightx = 0.0;
gbc.fill = GridBagConstraints.NONE;
ipPanel.add(portLabel, gbc);
gbc.gridx = 1;
gbc.gridy = 1;
gbc.weightx = 1.0;
gbc.fill = GridBagConstraints.BOTH;
ipPanel.add(portField, gbc);
ipPanel.setBorder(BorderFactory.createTitledBorder(
new EtchedBorder(),"Location"));
//-- Login Panel
authPanel = new JPanel();
authPanel.setLayout(new GridBagLayout());
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 0.0;
gbc.weighty = 0.0;
gbc.gridheight = 1;
gbc.gridwidth = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.fill = GridBagConstraints.NONE;
authPanel.add(loginLabel, gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.fill = GridBagConstraints.BOTH;
authPanel.add(loginField, gbc);
gbc.gridx = 0;
gbc.gridy = 1;
gbc.weightx = 0.0;
gbc.fill = GridBagConstraints.NONE;
authPanel.add(passwordLabel, gbc);
gbc.gridx = 1;
gbc.gridy = 1;
gbc.weightx = 1.0;
gbc.fill = GridBagConstraints.BOTH;
authPanel.add(passwordField, gbc);
authPanel.setBorder(BorderFactory.createTitledBorder(
new EtchedBorder(),"Authentication"));
//-- buttonPanel
buttonPanel = new JPanel();
buttonPanel.setLayout(new GridBagLayout());
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 0.0;
gbc.weighty = 0.0;
gbc.gridheight = 1;
gbc.gridwidth = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.fill = GridBagConstraints.NONE;
buttonPanel.add(loginButton, gbc);
gbc.gridx = 1;
buttonPanel.add(cancelButton, gbc);
cp.setLayout(new GridBagLayout());
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.gridheight = 1;
gbc.gridwidth = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.fill = GridBagConstraints.HORIZONTAL;
cp.add(topPanel,gbc);
gbc.fill = GridBagConstraints.BOTH;
gbc.gridy = 1;
cp.add(ipPanel,gbc);
gbc.fill = GridBagConstraints.BOTH;
gbc.gridy = 2;
cp.add(authPanel,gbc);
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridy = 3;
cp.add(buttonPanel,gbc);
pack();
setSize(240,250);
setResizable(false);
setModal(true);
centerWindow(this);
}
private void showError(String msg) {
JOptionPane.showMessageDialog(LoginDialog.this,
msg, "Error", JOptionPane.ERROR_MESSAGE);
}
public String[] getValues(){
values[0] = ipField.getText();
values[1] = portField.getText();
values[2] = loginField.getText();
values[3] = new String(passwordField.getPassword());
return values;
}
public boolean isOk(){
return isOk;
}
public void clearStatus(){
isOk = false;
}
public static void centerWindow(Window window) {
Dimension dim = window.getToolkit().getScreenSize();
window.setLocation(dim.width/2 - window.getWidth()/2,
dim.height/2 - window.getHeight()/2);
}
}
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