import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
public class MyLogin extends JFrame implements ActionListener {
private JPanel p1, p2;
private JLabel l1, l2, l3;
private JTextField username;
private JPasswordField password;
private JButton ok, cancel;
private JCheckBox tick;
private String filename;
private HashMap<String, User> table;
public MyLogin() {
super("Регистрация");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container container = this.getContentPane();
p1 = new JPanel();
p1.setBorder(new EtchedBorder());
p1.setLayout(new GridLayout(3, 3));
l1 = new JLabel("Потребителско име");
p1.add(l1);
username = new JTextField(20);
p1.add(username);
l2 = new JLabel("Парола");
p1.add(l2);
password = new JPasswordField(20);
p1.add(password);
l3 = new JLabel("Нов потребител");
p1.add(
l3);
tick = new JCheckBox();
p1.add(tick);
container.add(p1, BorderLayout.CENTER);
p2 = new JPanel();
p2.setBorder(new EtchedBorder());
ok = new JButton("Потвърди");
ok.addActionListener(this);
p2.add(ok);
cancel = new JButton("Отмени");
cancel.addActionListener(this);
p2.add(cancel);
container.add(p2, BorderLayout.PAGE_END);
filename = "users.txt";
table = new HashMap();
readFile();
this.setSize(280, 150);
this.setVisible(true);
}
private void readFile() {
FileReader fr = null;
BufferedReader in = null;
String line = null;
String[] split;
User user = null;
try {
fr = new FileReader(filename);
in = new BufferedReader(fr);
table = new HashMap();
while((line = in.readLine()) != null) {
split = line.split("\\t");
user =
new User(split[0], split[1]);
table.put(user.getName(), user);
}
}
catch (FileNotFoundException fnfe) {
JOptionPane.showMessageDialog(this, "Файлът " + filename + " не е намерен!");
}
catch (IOException ioe) {
JOptionPane.showMessageDialog(this, "Входно/изходна грешка при четене от файла " + filename);
}
finally {
if(in != null) {
try {
in.close();
}
catch (IOException ioe) {
JOptionPane.showMessageDialog(this, "Грешка при затваряне на файла " + filename);
}
}
}
}
private void writeFile() {
FileWriter fw = null;
BufferedWriter bw = null;
PrintWriter out = null;
try {
fw = new FileWriter(filename);
bw = new BufferedWriter(fw);
out = new PrintWriter(bw);
for (Map.Entry<String, User> entry : table.entrySet())
out.println(entry.getValue());
}
catch(IOException ioe) {
JOptionPane.showMessageDialog(this, "Грешка при запис във файла " + filename);
}
finally {
if(out != null) {
out.close();
}
}
}
public void actionPerformed(ActionEvent e) {
Object source = e.getSource();
User user = null, find = null;
String key = null, name = null, pass = null;
if(source == ok) {
name = username.getText();
pass = new String(password.getPassword());
if(name.length() == 0 && pass.length() == 0) {
JOptionPane.showMessageDialog(null,
"Въведете потребителско име и парола!","Съобщение",
JOptionPane.INFORMATION_MESSAGE);
}
else {
user = new User(name, pass);
key = user.getName();
if(tick.isSelected()) {
if(table.containsKey(key)) {
JOptionPane.showMessageDialog(null,
"В системата съществува потребител с име " + user.getName(),
"Съобщение", JOptionPane.INFORMATION_MESSAGE);
}
else {
table.put(key, user);
writeFile();
new Editor(key);
}
}
else {
if(table.containsKey(key)) {
find = table.get(key);
if(user.getPassword().equals(find.getPassword()))
new Editor(key);
else
JOptionPane.showMessageDialog(null, "Грешна парола!", "Съобщение",
JOptionPane.INFORMATION_MESSAGE);
}
else
JOptionPane.showMessageDialog(null,
"Грешно потребителско име!", "Съобщение",
JOptionPane.INFORMATION_MESSAGE);
}
}
}
else if(source == cancel) {
username.
setText("");
password.setText("");
tick.setSelected(false);
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new MyLogin();
}
});
}
}