添加搜索功能

lib/screen/dashboard/dashboard_screen.dart

@@ -1,5 +1,3 @@
-import 'dart:async';
-
 import 'package:flutter/material.dart';
 import 'package:timemanage/db/timer_entry_database.dart';
 import 'package:timemanage/model/timer_entry.dart';
@@ -16,6 +14,7 @@ class DashBoardScreen extends StatefulWidget {
 class DashBoardScreenState extends State<DashBoardScreen> {
   late List<TimerEntry> timers; // 计时器列表
   bool isLoading = false; // 是否正在加载
+  String _searchQuery = '';
 
   // 初始化状态
   @override
@@ -40,7 +39,7 @@ class DashBoardScreenState extends State<DashBoardScreen> {
     timers = await TimerEntryDatabase.instance.readAll();
 
     setState(() {
-      timers = timers;
+      timers = timers.where((timer) => timer.name.contains(_searchQuery)).toList();
       isLoading = false;
     });
   }
@@ -106,10 +105,42 @@ class DashBoardScreenState extends State<DashBoardScreen> {
         actions: [
           // 搜索按钮
           // TODO: 实现搜索功能
-          IconButton(
-            icon: const Icon(Icons.search),
-            onPressed: () {},
+          // 搜索按钮
+IconButton(
+  icon: const Icon(Icons.search),
+  onPressed: () {
+    showDialog<String>(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('搜索计时器'),
+        content: TextField(
+          onChanged: (value) {
+            setState(() {
+              _searchQuery = value;
+            });
+            refreshTimers();
+          },
+        ),
+        actions: [
+          TextButton(
+            onPressed: () {
+              setState(() {
+                _searchQuery = '';
+              });
+              refreshTimers();
+              Navigator.pop(context, 'Cancel');
+            },
+            child: const Text('取消搜索'),
+          ),
+          TextButton(
+            onPressed: () => Navigator.pop(context, 'OK'),
+            child: const Text('确定'),
           ),
+        ],
+      ),
+    );
+  },
+),
           // // 筛选按钮
           // IconButton(
           //   icon: const Icon(Icons.filter_alt),
@@ -189,10 +220,8 @@ class DashBoardScreenState extends State<DashBoardScreen> {
                       setState(() {
                         if (timers[index].isActive) {
                           timers[index].stop();
-                          TimerEntryDatabase.instance.update(timers[index]);
                         } else {
                           timers[index].start();
-                          TimerEntryDatabase.instance.update(timers[index]);
                         }
                       });
                     },
@@ -215,4 +244,4 @@ class DashBoardScreenState extends State<DashBoardScreen> {
       },
     );
   }
-}
+}