math_question/controller/ExamController.java

package controller;
import service.QuestionService;
import view.ExamFrame;
import java.util.List;
import javax.swing.JOptionPane;

public class ExamController {
    private MainController mainController;
    private QuestionService questionService = new QuestionService();

    public ExamController(MainController mainController) {
        this.mainController = mainController;
    }

    public void startExam(String difficulty) {
        try {
            String input = JOptionPane.showInputDialog("请输入题目数量:");
            if (input != null) {
                int count = Integer.parseInt(input);
                if (count > 0) {
                    List<model.Question> questions = questionService.generateQuestions(difficulty, count);
                    new ExamFrame(this, questions);
                } else {
                    JOptionPane.showMessageDialog(null, "题目数量必须大于0");
                }
            }
        } catch (NumberFormatException e) {
            JOptionPane.showMessageDialog(null, "请输入有效数字");
        } catch (Exception e) {
            JOptionPane.showMessageDialog(null, "生成题目时出现错误: " + e.getMessage());
        }
    }

    public void showResult(int score, int total) {
        // 计算百分比
        int percentage = (int) ((double) score / total * 100);

        // 显示成绩
        JOptionPane.showMessageDialog(null,
                "考试结束！\n" +
                        "得分: " + score + "/" + total + "\n" +
                        "正确率: " + percentage + "%",
                "考试结果",
                JOptionPane.INFORMATION_MESSAGE);

        // 重新显示主界面
        mainController.showMainFrame();
    }

    public void returnToMain() {
        // 返回到主界面
        mainController.showMainFrame();
    }

    // 获取主控制器（如果需要）
    public MainController getMainController() {
        return mainController;
    }
}