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307 lines
11 KiB
307 lines
11 KiB
package com.example.mathsystemtogether;
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import javafx.fxml.FXML;
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import javafx.fxml.FXMLLoader;
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import javafx.scene.Scene;
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import javafx.scene.control.*;
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import javafx.scene.layout.VBox;
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import javafx.stage.Stage;
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import javafx.collections.FXCollections;
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import javafx.collections.ObservableList;
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import java.util.*;
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import java.io.*;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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/**
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* 考试系统控制器
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*/
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public class ExamController {
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// 登录界面控件
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@FXML private TextField usernameField;
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@FXML private PasswordField passwordField;
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@FXML private Button loginButton;
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@FXML private Button registerButton;
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@FXML private Label loginStatusLabel;
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// 考试设置界面控件
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@FXML private VBox examSetupPanel;
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@FXML private Label welcomeLabel;
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@FXML private ComboBox<String> levelComboBox;
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@FXML private TextField questionCountField;
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@FXML private Button startExamButton;
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@FXML private Button logoutButton;
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@FXML private Label statusLabel;
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@FXML private Button changePasswordButton;
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// 数据成员
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private Account currentAccount;
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private List<Question> examQuestions;
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private ChoiceQuestionGenerator questionGenerator;
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private final Map<String, Account> userMap = new HashMap<>();
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private static final String USER_DATA_FILE = "user_data.txt";
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// 常量定义
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private static final int MIN_QUESTIONS = 5;
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private static final int MAX_QUESTIONS = 20;
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@FXML
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public void initialize() {
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initAccounts();
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loadUserDataFromFile();
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setupLevelComboBox();
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examSetupPanel.setVisible(false);
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questionCountField.setText("10");
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}
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private void initAccounts() {
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// 小学三个账号
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userMap.put("张三1", new Account("张三1", "123", Level.小学));
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userMap.put("张三2", new Account("张三2", "123", Level.小学));
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userMap.put("张三3", new Account("张三3", "123", Level.小学));
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// 初中三个账号
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userMap.put("李四1", new Account("李四1", "123", Level.初中));
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userMap.put("李四2", new Account("李四2", "123", Level.初中));
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userMap.put("李四3", new Account("李四3", "123", Level.初中));
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// 高中三个账号
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userMap.put("王五1", new Account("王五1", "123", Level.高中));
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userMap.put("王五2", new Account("王五2", "123", Level.高中));
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userMap.put("王五3", new Account("王五3", "123", Level.高中));
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}
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private void setupLevelComboBox() {
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ObservableList<String> levels = FXCollections.observableArrayList("小学", "初中", "高中");
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levelComboBox.setItems(levels);
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levelComboBox.setValue("小学");
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}
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private void loadUserDataFromFile() {
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try {
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if (!Files.exists(Paths.get(USER_DATA_FILE))) {
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return;
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}
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List<String> lines = Files.readAllLines(Paths.get(USER_DATA_FILE));
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for (String line : lines) {
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String[] parts = line.split("\\|");
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if (parts.length >= 4) {
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String username = parts[0];
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String password = parts[1];
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String levelStr = parts[3];
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Level level;
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try {
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level = Level.valueOf(levelStr);
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} catch (IllegalArgumentException e) {
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level = Level.小学; // 默认级别
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}
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userMap.put(username, new Account(username, password, level));
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}
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}
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} catch (IOException e) {
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// 加载用户数据失败，静默处理
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}
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}
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@FXML
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private void handleLogin() {
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String username = usernameField.getText().trim();
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String password = passwordField.getText();
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if (username.isEmpty() || password.isEmpty()) {
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loginStatusLabel.setText("请输入用户名和密码");
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loginStatusLabel.setStyle("-fx-text-fill: red;");
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return;
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}
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Account account = userMap.get(username);
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if (account != null && account.password.equals(password)) {
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currentAccount = account;
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welcomeLabel.setText("欢迎，" + username + "！当前级别：" + account.level);
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levelComboBox.setValue(account.level.toString());
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examSetupPanel.setVisible(true);
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loginStatusLabel.setText("登录成功！");
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loginStatusLabel.setStyle("-fx-text-fill: green;");
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} else {
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loginStatusLabel.setText("用户名或密码错误");
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loginStatusLabel.setStyle("-fx-text-fill: red;");
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}
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}
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@FXML
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private void handleRegister() {
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try {
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// 打开注册界面
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FXMLLoader loader = new FXMLLoader(getClass().getResource("register-view.fxml"));
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Scene scene = new Scene(loader.load(), 800, 800);
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Stage registerStage = new Stage();
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registerStage.setTitle("数学考试系统 - 用户注册");
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registerStage.setScene(scene);
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registerStage.setResizable(false);
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// 获取注册控制器并设置原始登录界面引用
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RegisterController registerController = loader.getController();
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Stage currentStage = (Stage) loginStatusLabel.getScene().getWindow();
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registerController.setOriginalLoginStage(currentStage);
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registerStage.show();
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} catch (Exception e) {
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loginStatusLabel.setText("打开注册界面失败：" + e.getMessage());
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loginStatusLabel.setStyle("-fx-text-fill: red;");
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}
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}
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@FXML
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private void handleLogout() {
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currentAccount = null;
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examQuestions = null;
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examSetupPanel.setVisible(false);
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usernameField.clear();
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passwordField.clear();
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loginStatusLabel.setText("");
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statusLabel.setText("");
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}
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@FXML
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private void handleStartExam() {
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if (currentAccount == null) {
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statusLabel.setText("请先登录");
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statusLabel.setStyle("-fx-text-fill: red;");
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return;
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}
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try {
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int count = Integer.parseInt(questionCountField.getText());
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if (count < MIN_QUESTIONS || count > MAX_QUESTIONS) {
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statusLabel.setText("题目数量应在" + MIN_QUESTIONS + "-" + MAX_QUESTIONS + "之间");
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statusLabel.setStyle("-fx-text-fill: red;");
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return;
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}
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// 获取选择的级别
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String selectedLevel = levelComboBox.getValue();
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ChoiceQuestionGenerator.Level level = ChoiceQuestionGenerator.Level.valueOf(selectedLevel);
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// 生成考试题目
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questionGenerator = new ChoiceQuestionGenerator();
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examQuestions = questionGenerator.generateQuestions(level, count);
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if (examQuestions.isEmpty()) {
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statusLabel.setText("无法生成题目，请重试");
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statusLabel.setStyle("-fx-text-fill: red;");
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return;
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}
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// 开始考试
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startExam();
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} catch (NumberFormatException e) {
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statusLabel.setText("请输入有效的数字");
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statusLabel.setStyle("-fx-text-fill: red;");
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}
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}
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@FXML
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private void handleChangePassword() {
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if (currentAccount == null) {
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statusLabel.setText("请先登录");
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statusLabel.setStyle("-fx-text-fill: red;");
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return;
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}
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try {
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FXMLLoader loader = new FXMLLoader(getClass().getResource("change-password-view.fxml"));
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Scene scene = new Scene(loader.load(), 600, 500);
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Stage changePasswordStage = new Stage();
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changePasswordStage.setTitle("修改密码");
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changePasswordStage.setScene(scene);
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changePasswordStage.setResizable(false);
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// 传递当前用户信息给密码修改控制器
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ChangePasswordController controller = loader.getController();
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controller.setCurrentUser(currentAccount.username);
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controller.setExamController(this);
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changePasswordStage.show();
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} catch (Exception e) {
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statusLabel.setText("打开修改密码界面失败：" + e.getMessage());
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statusLabel.setStyle("-fx-text-fill: red;");
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}
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}
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// 供 ChangePasswordController 调用的方法
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public boolean checkUserPassword(String username, String password) {
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Account account = userMap.get(username);
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return account != null && account.password.equals(password);
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}
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// 更新用户密码
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public void updateUserPassword(String username, String newPassword) {
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Account account = userMap.get(username);
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if (account != null) {
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account.password = newPassword;
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}
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}
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// 为继续做题设置用户信息
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public void setUserForContinueExam(String username, String level) {
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// 设置当前用户
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Account account = userMap.get(username);
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if (account != null) {
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currentAccount = account;
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welcomeLabel.setText("欢迎，" + username + "！当前级别：" + account.level);
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levelComboBox.setValue(account.level.toString());
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examSetupPanel.setVisible(true);
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loginStatusLabel.setText("继续做题模式");
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loginStatusLabel.setStyle("-fx-text-fill: green;");
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}
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}
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private void startExam() {
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try {
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// 打开专门的考试界面
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FXMLLoader loader = new FXMLLoader(getClass().getResource("exam-taking-view.fxml"));
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Scene scene = new Scene(loader.load(), 1000, 950);
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Stage examStage = new Stage();
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examStage.setTitle("数学考试 - " + currentAccount.username);
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examStage.setScene(scene);
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examStage.setResizable(false);
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// 设置考试数据
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ExamTakingController examController = loader.getController();
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examController.setExamData(examQuestions, currentAccount.username, levelComboBox.getValue());
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// 显示考试窗口
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examStage.show();
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// 隐藏主窗口
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Stage mainStage = (Stage) startExamButton.getScene().getWindow();
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mainStage.hide();
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} catch (Exception e) {
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statusLabel.setText("启动考试失败：" + e.getMessage());
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statusLabel.setStyle("-fx-text-fill: red;");
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}
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}
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// 内部类
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static class Account {
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final String username;
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String password;
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final Level level;
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Account(String username, String password, Level level) {
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this.username = username;
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this.password = password;
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this.level = level;
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}
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}
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enum Level {
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小学, 初中, 高中
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}
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}
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