feat:增加日程模块

lib/widgets/task_dialog.dart

@@ -0,0 +1,176 @@
+import 'package:fluent_ui/fluent_ui.dart';
+import 'package:omni_datetime_picker/omni_datetime_picker.dart';
+import 'package:task_hub/models/task.dart';
+import 'package:task_hub/widgets/common.dart';
+
+class TaskDialog extends StatefulWidget {
+  final Task? task;
+  final ValueChanged<Task> onSave;
+
+  const TaskDialog({super.key, this.task, required this.onSave});
+
+  @override
+  State<TaskDialog> createState() => _TaskDialogState();
+}
+
+class _TaskDialogState extends State<TaskDialog> {
+  late TextEditingController _titleController;
+  late TextEditingController _descController;
+  late Priority _selectedPriority;
+  DateTime? _selectedDueDate;
+  DateTime? _selectedScheduleDate;
+  final _formKey = GlobalKey<FormState>();
+
+  @override
+  void initState() {
+    super.initState();
+    _titleController = TextEditingController(text: widget.task?.title ?? '');
+    _descController = TextEditingController(text: widget.task?.desc ?? '');
+    _selectedPriority = widget.task?.priority ?? Priority.medium;
+    _selectedDueDate = widget.task?.dueDate;
+    _selectedScheduleDate = widget.task?.scheduleDate;
+  }
+
+  @override
+  void dispose() {
+    _titleController.dispose();
+    _descController.dispose();
+    super.dispose();
+  }
+
+  void onConfirmClick() {
+    if (_formKey.currentState!.validate()) {
+      final task = Task(
+        id: widget.task?.id,
+        title: _titleController.text,
+        desc: _descController.text.isEmpty ? null : _descController.text,
+        dueDate: _selectedDueDate,
+        scheduleDate: _selectedScheduleDate,
+        priority: _selectedPriority,
+        isCompleted: widget.task?.isCompleted ?? false,
+      );
+      widget.onSave(task);
+      Navigator.pop(context);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ContentDialog(
+      title: Text(widget.task == null ? '添加任务' : '编辑任务'),
+      content: _buildForm(),
+      actions: [
+        Button(
+          child: const Text('取消'),
+          onPressed: () => Navigator.pop(context),
+        ),
+        FilledButton(child: const Text('保存'), onPressed: onConfirmClick),
+      ],
+    );
+  }
+
+  Widget _buildForm() {
+    return Form(
+      key: _formKey,
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          // 标题
+          buildFormItem(
+            label: '任务标题',
+            required: true,
+            child: TextFormBox(
+              controller: _titleController,
+              placeholder: '请输入任务标题',
+              validator: (value) {
+                if (value == null || value.isEmpty) {
+                  return '任务标题不能为空';
+                }
+                return null;
+              },
+            ),
+          ),
+          const SizedBox(height: 16),
+
+          // 描述
+          buildFormItem(
+            label: '任务描述',
+            child: TextFormBox(
+              controller: _descController,
+              placeholder: '请输入任务描述',
+              maxLines: 3,
+            ),
+          ),
+          const SizedBox(height: 16),
+
+          // 优先级
+          buildFormItem(
+            label: '优先级',
+            child: RadioGroup<Priority>(
+              groupValue: _selectedPriority,
+              child: Row(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: [
+                  RadioButton<Priority>(
+                    value: Priority.low,
+                    content: Text('低'),
+                  ),
+                  RadioButton<Priority>(
+                    value: Priority.medium,
+                    content: Text('中'),
+                  ),
+                  RadioButton<Priority>(
+                    value: Priority.high,
+                    content: Text('高'),
+                  ),
+                ],
+              ),
+              onChanged: (value) {
+                if (value != null) {
+                  setState(() {
+                    _selectedPriority = value;
+                  });
+                }
+              },
+            ),
+          ),
+          const SizedBox(height: 16),
+
+          // 截止日期
+          buildFormItem(
+            label: '截止日期',
+            child: buildOmniDateButton(
+              context: context,
+              selectedDate: _selectedDueDate,
+              placeholder: '请选择截止日期',
+              type: OmniDateTimePickerType.date,
+              onChanged: (date) {
+                setState(() {
+                  _selectedDueDate = date;
+                });
+              },
+            ),
+          ),
+          const SizedBox(height: 16),
+
+          // 提醒日期
+          buildFormItem(
+            label: '提醒日期',
+            child: buildOmniDateButton(
+              context: context,
+              selectedDate: _selectedScheduleDate,
+              placeholder: '请选择提醒日期',
+              type: OmniDateTimePickerType.dateAndTime,
+              onChanged: (date) {
+                setState(() {
+                  _selectedScheduleDate = date;
+                });
+              },
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}