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98 lines
2.9 KiB
98 lines
2.9 KiB
package com.mathapp.panels;
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import com.mathapp.MathApp;
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import com.mathapp.models.User;
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import com.mathapp.services.DataPersistence;
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import javax.swing.*;
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import java.awt.*;
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public class LoginPanel extends JPanel {
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private final MathApp app;
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private final JTextField emailField;
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private final JPasswordField passwordField;
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public LoginPanel(MathApp app) {
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this.app = app;
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setLayout(new GridBagLayout());
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GridBagConstraints gbc = new GridBagConstraints();
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JLabel titleLabel = new JLabel("欢迎回来", SwingConstants.CENTER);
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titleLabel.setFont(new Font("思源黑体", Font.BOLD, 32));
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emailField = new JTextField(20);
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passwordField = new JPasswordField(20);
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JButton loginButton = new JButton("登录");
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loginButton.setFont(new Font("思源黑体", Font.PLAIN, 16));
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loginButton.setPreferredSize(new Dimension(120, 40));
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JButton registerButton = new JButton("没有账户？立即注册");
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registerButton.setFont(new Font("思源黑体", Font.PLAIN, 12));
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registerButton.setBorderPainted(false);
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registerButton.setContentAreaFilled(false);
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registerButton.setFocusPainted(false);
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registerButton.setOpaque(false);
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registerButton.setCursor(new Cursor(Cursor.HAND_CURSOR));
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registerButton.setForeground(Color.BLUE);
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gbc.insets = new Insets(10, 10, 10, 10);
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gbc.gridwidth = 2;
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gbc.gridx = 0;
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gbc.gridy = 0;
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add(titleLabel, gbc);
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gbc.gridwidth = 1;
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gbc.gridy = 1;
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gbc.anchor = GridBagConstraints.EAST;
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add(new JLabel("邮箱:"), gbc);
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gbc.gridx = 1;
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gbc.anchor = GridBagConstraints.WEST;
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add(emailField, gbc);
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gbc.gridx = 0;
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gbc.gridy = 2;
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gbc.anchor = GridBagConstraints.EAST;
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add(new JLabel("密码:"), gbc);
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gbc.gridx = 1;
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gbc.anchor = GridBagConstraints.WEST;
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add(passwordField, gbc);
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gbc.gridy = 3;
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gbc.gridx = 0;
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gbc.gridwidth = 2;
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gbc.anchor = GridBagConstraints.CENTER;
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add(loginButton, gbc);
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gbc.gridy = 4;
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add(registerButton, gbc);
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loginButton.addActionListener(e -> handleLogin());
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registerButton.addActionListener(e -> app.showPanel(MathApp.REGISTER_PANEL));
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}
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public void resetPanel() {
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emailField.setText("");
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passwordField.setText("");
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}
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private void handleLogin() {
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String email = emailField.getText().trim();
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String password = new String(passwordField.getPassword());
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if (email.isEmpty() || password.isEmpty()) {
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JOptionPane.showMessageDialog(this, "邮箱和密码不能为空！", "错误", JOptionPane.ERROR_MESSAGE);
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return;
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}
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User user = DataPersistence.findUserByEmail(email);
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if (user != null && user.verifyPassword(password)) {
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app.setCurrentUserEmail(email);
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app.showPanel(MathApp.MAIN_MENU_PANEL);
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} else {
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JOptionPane.showMessageDialog(this, "邮箱或密码错误！", "登录失败", JOptionPane.ERROR_MESSAGE);
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}
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}
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} |