最终代码.txt

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+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class Main {
+    private DefaultListModel<TaskItem> listModel;
+    private JList<TaskItem> taskList;
+    private JTextField taskField;
+    private JTextField dateField;
+    private JComboBox<String> priorityComboBox;
+    private List<TaskItem> data = new ArrayList<>();
+
+    public Main() {
+        JFrame frame = new JFrame("待办事项列表");
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setSize(600, 600);
+
+        JPanel panel = new JPanel();
+        panel.setLayout(new BorderLayout(10, 10));
+
+        // 设置中文字体
+        Font font = new Font("微软雅黑", Font.PLAIN, 14);
+        UIManager.put("Label.font", font);
+        UIManager.put("TextField.font", font);
+        UIManager.put("ComboBox.font", font);
+        UIManager.put("Button.font", font);
+        UIManager.put("List.font", font);
+        UIManager.put("OptionPane.messageFont", font);
+
+        listModel = new DefaultListModel<>();
+        taskList = new JList<>(listModel);
+        taskList.setCellRenderer(new CustomListRenderer());
+        panel.add(new JScrollPane(taskList), BorderLayout.CENTER);
+
+        JPanel inputPanel = new JPanel(new GridLayout(4, 2, 10, 10));
+        inputPanel.add(new JLabel("任务:"));
+        taskField = new JTextField();
+        inputPanel.add(taskField);
+
+        inputPanel.add(new JLabel("截止日期 (yyyy-mm-dd):"));
+        dateField = new JTextField();
+        inputPanel.add(dateField);
+
+        inputPanel.add(new JLabel("优先级:"));
+        String[] priorities = {"低", "中", "高"};
+        priorityComboBox = new JComboBox<>(priorities);
+        inputPanel.add(priorityComboBox);
+
+        JPanel buttonPanel = new JPanel(new GridLayout(1, 5, 10, 10));
+        JButton addButton = new JButton("添加");
+        JButton removeButton = new JButton("删除");
+        JButton editButton = new JButton("编辑");
+        JButton saveButton = new JButton("保存");
+        JButton toggleButton = new JButton("完成");
+
+        buttonPanel.add(addButton);
+        buttonPanel.add(removeButton);
+        buttonPanel.add(editButton);
+        buttonPanel.add(saveButton);
+        buttonPanel.add(toggleButton);
+
+        addButton.addActionListener(e -> addTask());
+        removeButton.addActionListener(e -> removeTask());
+        editButton.addActionListener(e -> editTask());
+        saveButton.addActionListener(e -> saveTasks());
+        toggleButton.addActionListener(e -> toggleTaskStatus());
+
+        panel.add(inputPanel, BorderLayout.NORTH);
+        panel.add(buttonPanel, BorderLayout.SOUTH);
+
+        frame.add(panel);
+        frame.setVisible(true);
+    }
+
+    private boolean validateDate(String dateStr) {
+        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
+        sdf.setLenient(false);
+        try {
+            Date date = sdf.parse(dateStr);
+            Date today = new Date();
+            return date.after(today) || date.equals(today);
+        } catch (ParseException e) {
+            return false;
+        }
+    }
+
+    private void addTask() {
+        String taskText = taskField.getText().trim();
+        String dueDateText = dateField.getText().trim();
+        String priority = (String) priorityComboBox.getSelectedItem();
+
+        if (taskText.isEmpty() || dueDateText.isEmpty()) {
+            JOptionPane.showMessageDialog(null, "请输入任务和截止日期！");
+            return;
+        }
+
+        if (!validateDate(dueDateText)) {
+            JOptionPane.showMessageDialog(null, "日期格式不正确或日期已过期！请使用格式：yyyy-mm-dd");
+            return;
+        }
+
+        TaskItem newTask = new TaskItem(taskText, dueDateText, priority);
+        listModel.addElement(newTask);
+        data.add(newTask);
+        taskField.setText("");
+        dateField.setText("");
+        priorityComboBox.setSelectedIndex(0);
+    }
+
+    private void removeTask() {
+        int selectedIndex = taskList.getSelectedIndex();
+        if (selectedIndex != -1) {
+            listModel.remove(selectedIndex);
+            data.remove(selectedIndex);
+        } else {
+            JOptionPane.showMessageDialog(null, "请选择要删除的任务！");
+        }
+    }
+
+    private void editTask() {
+        int selectedIndex = taskList.getSelectedIndex();
+        if (selectedIndex != -1) {
+            TaskItem item = listModel.getElementAt(selectedIndex);
+            
+            String currentTask = item.getTask();
+            String currentDueDate = item.getDueDate();
+            String currentPriority = item.getPriority();
+            
+            String newTask = JOptionPane.showInputDialog(null, "当前任务: " + currentTask + "\n请输入新任务:", currentTask);
+            if (newTask == null) return;
+            
+            String newDueDate = JOptionPane.showInputDialog(null, "当前截止日期: " + currentDueDate + "\n请输入新截止日期 (yyyy-mm-dd):", currentDueDate);
+            if (newDueDate == null) return;
+            
+            if (!validateDate(newDueDate)) {
+                JOptionPane.showMessageDialog(null, "日期格式不正确或日期已过期！请使用格式：yyyy-mm-dd");
+                return;
+            }
+            
+            String[] priorities = {"低", "中", "高"};
+            String newPriority = (String) JOptionPane.showInputDialog(
+                null,
+                "请选择优先级:",
+                "优先级选择",
+                JOptionPane.QUESTION_MESSAGE,
+                null,
+                priorities,
+                currentPriority
+            );
+            if (newPriority == null) return;
+            
+            item.setTask(newTask);
+            item.setDueDate(newDueDate);
+            item.setPriority(newPriority);
+            
+            taskList.repaint();
+        } else {
+            JOptionPane.showMessageDialog(null, "请选择要编辑的任务！");
+        }
+    }
+
+    private void toggleTaskStatus() {
+        int selectedIndex = taskList.getSelectedIndex();
+        if (selectedIndex != -1) {
+            TaskItem item = listModel.getElementAt(selectedIndex);
+            item.toggleCompleted();
+            taskList.repaint();
+        } else {
+            JOptionPane.showMessageDialog(null, "请选择要切换状态的任务！");
+        }
+    }
+
+    private void saveTasks() {
+        JOptionPane.showMessageDialog(null, "任务已保存！");
+    }
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(Main::new);
+    }
+}
+
+class TaskItem {
+    private String task;
+    private String dueDate;
+    private String priority;
+    private boolean isCompleted;
+
+    public TaskItem(String task, String dueDate, String priority) {
+        this.task = task;
+        this.dueDate = dueDate;
+        this.priority = priority;
+        this.isCompleted = false;
+    }
+
+    public void toggleCompleted() {
+        isCompleted = !isCompleted;
+    }
+
+    public boolean isCompleted() {
+        return isCompleted;
+    }
+
+    public String getTask() {
+        return task;
+    }
+
+    public void setTask(String task) {
+        this.task = task;
+    }
+
+    public String getDueDate() {
+        return dueDate;
+    }
+
+    public void setDueDate(String dueDate) {
+        this.dueDate = dueDate;
+    }
+
+    public String getPriority() {
+        return priority;
+    }
+
+    public void setPriority(String priority) {
+        this.priority = priority;
+    }
+    @Override
+    public String toString() {
+        return task + " | 截止日期: " + dueDate + " | 优先级: " + priority;
+    }
+}
+
+class CustomListRenderer extends DefaultListCellRenderer {
+    @Override
+    public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
+        JLabel label = (JLabel) super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
+        
+        if (value instanceof TaskItem) {
+            TaskItem task = (TaskItem) value;
+            
+            // 使用文字标记任务状态
+            String status = task.isCompleted() ? "[完成] " : "[未完成] ";
+            label.setText(status + task.toString());
+            
+            // 设置不同优先级的颜色
+            switch (task.getPriority()) {
+                case "高":
+                    label.setForeground(Color.RED);
+                    break;
+                case "中":
+                    label.setForeground(Color.ORANGE);
+                    break;
+                case "低":
+                    label.setForeground(Color.GREEN);
+                    break;
+            }
+            
+            // 如果任务已完成，添加删除线并变灰
+            if (task.isCompleted()) {
+                label.setFont(label.getFont().deriveFont(Font.PLAIN | Font.ITALIC));
+                label.setForeground(Color.GRAY);
+            } else {
+                label.setFont(label.getFont().deriveFont(Font.PLAIN));
+            }
+        }
+        return label;
+    }
+}