136 lines
4.2 KiB
Dart
136 lines
4.2 KiB
Dart
// Author: fruit.com.cn
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import 'package:flutter/material.dart';
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import '../../../core/theme/app_colors.dart';
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import '../../../l10n/app_localizations.dart';
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const double _searchHeight = 44;
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const double _searchRadius = 22;
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const double _searchPadding = 14;
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const double _iconSize = 18;
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const double _iconGap = 8;
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const Duration _focusTransition = Duration(milliseconds: 160);
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/// 剧场顶部整行搜索框：浅灰胶囊，聚焦时变白并显示主题色描边。
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class DiscoverSearchField extends StatefulWidget {
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const DiscoverSearchField({
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super.key,
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required this.controller,
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required this.focusNode,
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required this.onChanged,
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required this.loading,
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this.horizontalPadding = 14,
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});
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final TextEditingController controller;
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final FocusNode focusNode;
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final ValueChanged<String> onChanged;
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final bool loading;
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final double horizontalPadding;
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@override
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State<DiscoverSearchField> createState() => _DiscoverSearchFieldState();
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}
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class _DiscoverSearchFieldState extends State<DiscoverSearchField> {
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bool _focused = false;
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@override
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void initState() {
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super.initState();
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widget.focusNode.addListener(_onFocusChanged);
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}
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@override
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void didUpdateWidget(covariant DiscoverSearchField oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.focusNode != widget.focusNode) {
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oldWidget.focusNode.removeListener(_onFocusChanged);
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widget.focusNode.addListener(_onFocusChanged);
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_focused = widget.focusNode.hasFocus;
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}
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}
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@override
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void dispose() {
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widget.focusNode.removeListener(_onFocusChanged);
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super.dispose();
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}
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void _onFocusChanged() {
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final focused = widget.focusNode.hasFocus;
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if (focused != _focused) setState(() => _focused = focused);
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}
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@override
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Widget build(BuildContext context) {
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return Padding(
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padding: EdgeInsets.symmetric(horizontal: widget.horizontalPadding),
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child: AnimatedContainer(
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key: const Key('discover-search-shell'),
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duration: _focusTransition,
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curve: Curves.easeOut,
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height: _searchHeight,
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padding: const EdgeInsets.symmetric(horizontal: _searchPadding),
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decoration: BoxDecoration(
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color: AppColors.card,
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borderRadius: BorderRadius.circular(_searchRadius),
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border: Border.all(
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color: _focused ? AppColors.blue : Colors.transparent,
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),
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),
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child: Row(
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children: [
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const Icon(
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Icons.search_rounded,
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color: AppColors.subtle,
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size: _iconSize,
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),
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const SizedBox(width: _iconGap),
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Expanded(
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child: TextField(
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key: const Key('discover-search'),
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controller: widget.controller,
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focusNode: widget.focusNode,
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onChanged: widget.onChanged,
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onTapOutside: (_) => widget.focusNode.unfocus(),
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textInputAction: TextInputAction.search,
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textAlignVertical: TextAlignVertical.center,
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style: const TextStyle(
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color: AppColors.onSurface,
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fontSize: 14,
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),
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decoration: InputDecoration(
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isDense: true,
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hintText: AppLocalizations.of(context)!.searchDiscover,
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hintStyle: const TextStyle(
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color: AppColors.subtle,
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fontSize: 14,
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),
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border: InputBorder.none,
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enabledBorder: InputBorder.none,
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focusedBorder: InputBorder.none,
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contentPadding: EdgeInsets.zero,
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suffixIcon: widget.loading
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? const SizedBox.square(
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dimension: 18,
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child: Center(
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child: CircularProgressIndicator(strokeWidth: 2),
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),
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)
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: null,
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suffixIconConstraints: const BoxConstraints(
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minWidth: 0,
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minHeight: 0,
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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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}
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}
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