init
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sjk
303
client/lib/features/reading/widgets/reading_search_bar.dart
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303
client/lib/features/reading/widgets/reading_search_bar.dart
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import 'package:flutter/material.dart';
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/// 阅读搜索栏组件
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class ReadingSearchBar extends StatefulWidget {
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final Function(String) onSearch;
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final String? initialQuery;
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final String hintText;
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const ReadingSearchBar({
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super.key,
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required this.onSearch,
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this.initialQuery,
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this.hintText = '搜索文章标题、内容或标签...',
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});
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@override
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State<ReadingSearchBar> createState() => _ReadingSearchBarState();
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}
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class _ReadingSearchBarState extends State<ReadingSearchBar> {
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late TextEditingController _controller;
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final FocusNode _focusNode = FocusNode();
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@override
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void initState() {
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super.initState();
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_controller = TextEditingController(text: widget.initialQuery);
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// 自动聚焦
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WidgetsBinding.instance.addPostFrameCallback((_) {
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_focusNode.requestFocus();
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});
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}
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@override
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void dispose() {
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_controller.dispose();
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_focusNode.dispose();
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super.dispose();
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}
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void _performSearch() {
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final query = _controller.text.trim();
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if (query.isNotEmpty) {
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widget.onSearch(query);
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}
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}
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@override
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Widget build(BuildContext context) {
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return Dialog(
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(16),
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),
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child: Padding(
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padding: const EdgeInsets.all(20),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 标题
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const Text(
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'搜索文章',
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style: TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.bold,
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color: Colors.black87,
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),
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),
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const SizedBox(height: 16),
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// 搜索输入框
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TextField(
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controller: _controller,
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focusNode: _focusNode,
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decoration: InputDecoration(
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hintText: widget.hintText,
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hintStyle: TextStyle(color: Colors.grey[500]),
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prefixIcon: const Icon(
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Icons.search,
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color: Color(0xFF2196F3),
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),
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suffixIcon: _controller.text.isNotEmpty
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? IconButton(
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icon: const Icon(Icons.clear),
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onPressed: () {
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_controller.clear();
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setState(() {});
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},
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)
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: null,
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(color: Colors.grey[300]!),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: const BorderSide(
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color: Color(0xFF2196F3),
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width: 2,
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),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(color: Colors.grey[300]!),
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),
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contentPadding: const EdgeInsets.symmetric(
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horizontal: 16,
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vertical: 12,
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),
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),
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onChanged: (value) {
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setState(() {});
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},
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onSubmitted: (_) => _performSearch(),
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textInputAction: TextInputAction.search,
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),
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const SizedBox(height: 16),
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// 搜索建议
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_buildSearchSuggestions(),
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const SizedBox(height: 20),
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// 操作按钮
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Row(
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mainAxisAlignment: MainAxisAlignment.end,
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children: [
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TextButton(
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onPressed: () => Navigator.of(context).pop(),
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child: Text(
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'取消',
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style: TextStyle(color: Colors.grey[600]),
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),
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),
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const SizedBox(width: 12),
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ElevatedButton(
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onPressed: _controller.text.trim().isNotEmpty
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? _performSearch
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: null,
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style: ElevatedButton.styleFrom(
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backgroundColor: const Color(0xFF2196F3),
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foregroundColor: Colors.white,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(8),
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),
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padding: const EdgeInsets.symmetric(
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horizontal: 24,
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vertical: 12,
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),
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),
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child: const Text('搜索'),
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),
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],
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),
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],
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),
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),
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);
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}
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/// 构建搜索建议
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Widget _buildSearchSuggestions() {
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final suggestions = [
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'四级阅读',
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'六级阅读',
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'托福阅读',
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'雅思阅读',
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'商务英语',
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'日常对话',
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'科技文章',
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'新闻报道',
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];
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'热门搜索',
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style: TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.w500,
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color: Colors.grey[700],
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),
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),
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const SizedBox(height: 8),
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Wrap(
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spacing: 8,
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runSpacing: 8,
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children: suggestions.map((suggestion) {
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return GestureDetector(
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onTap: () {
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_controller.text = suggestion;
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setState(() {});
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_performSearch();
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},
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child: Container(
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padding: const EdgeInsets.symmetric(
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horizontal: 12,
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vertical: 6,
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),
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decoration: BoxDecoration(
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color: Colors.grey[100],
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borderRadius: BorderRadius.circular(16),
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border: Border.all(color: Colors.grey[300]!),
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),
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child: Text(
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suggestion,
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style: TextStyle(
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fontSize: 12,
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color: Colors.grey[700],
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),
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),
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),
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);
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}).toList(),
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),
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],
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);
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}
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}
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/// 简化的搜索栏组件（用于嵌入页面）
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class ReadingSearchField extends StatefulWidget {
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final Function(String) onSearch;
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final Function()? onTap;
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final String? initialQuery;
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final bool enabled;
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const ReadingSearchField({
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super.key,
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required this.onSearch,
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this.onTap,
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this.initialQuery,
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this.enabled = true,
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});
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@override
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State<ReadingSearchField> createState() => _ReadingSearchFieldState();
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}
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class _ReadingSearchFieldState extends State<ReadingSearchField> {
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late TextEditingController _controller;
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@override
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void initState() {
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super.initState();
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_controller = TextEditingController(text: widget.initialQuery);
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Container(
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margin: const EdgeInsets.all(16),
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child: TextField(
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controller: _controller,
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enabled: widget.enabled,
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onTap: widget.onTap,
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decoration: InputDecoration(
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hintText: '搜索文章...',
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hintStyle: TextStyle(color: Colors.grey[500]),
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prefixIcon: const Icon(
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Icons.search,
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color: Color(0xFF2196F3),
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),
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suffixIcon: _controller.text.isNotEmpty
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? IconButton(
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icon: const Icon(Icons.clear),
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onPressed: () {
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_controller.clear();
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widget.onSearch('');
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setState(() {});
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},
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)
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: null,
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(25),
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borderSide: BorderSide.none,
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),
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filled: true,
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fillColor: Colors.white,
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contentPadding: const EdgeInsets.symmetric(
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horizontal: 20,
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vertical: 12,
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),
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),
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onChanged: (value) {
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setState(() {});
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},
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onSubmitted: widget.onSearch,
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textInputAction: TextInputAction.search,
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),
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);
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}
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}
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