108 lines
2.9 KiB
Dart
108 lines
2.9 KiB
Dart
import 'package:aves/theme/icons.dart';
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import 'package:aves/widgets/common/extensions/build_context.dart';
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import 'package:aves/widgets/common/search/route.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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abstract class AvesSearchDelegate extends SearchDelegate {
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final String routeName;
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final bool canPop;
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AvesSearchDelegate({
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required this.routeName,
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this.canPop = true,
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String? initialQuery,
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required super.searchFieldLabel,
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}) {
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query = initialQuery ?? '';
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}
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@override
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Widget? buildLeading(BuildContext context) {
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// use a property instead of checking `Navigator.canPop(context)`
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// because the navigator state changes as soon as we press back
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// so the leading may mistakenly switch to the close button
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return canPop
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? IconButton(
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icon: AnimatedIcon(
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icon: AnimatedIcons.menu_arrow,
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progress: transitionAnimation,
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),
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onPressed: () => goBack(context),
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tooltip: MaterialLocalizations.of(context).backButtonTooltip,
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)
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: const CloseButton(
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onPressed: SystemNavigator.pop,
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);
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}
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@override
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List<Widget>? buildActions(BuildContext context) {
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return [
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if (query.isNotEmpty)
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IconButton(
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icon: const Icon(AIcons.clear),
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onPressed: () {
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query = '';
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showSuggestions(context);
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},
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tooltip: context.l10n.clearTooltip,
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),
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];
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}
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void goBack(BuildContext context) {
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clean();
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Navigator.pop(context);
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}
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void clean() {
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currentBody = null;
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focusNode?.unfocus();
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}
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// adapted from Flutter `SearchDelegate` in `/material/search.dart`
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@override
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void showResults(BuildContext context) {
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focusNode?.unfocus();
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currentBody = SearchBody.results;
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}
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@override
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void showSuggestions(BuildContext context) {
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assert(focusNode != null, '_focusNode must be set by route before showSuggestions is called.');
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focusNode!.requestFocus();
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currentBody = SearchBody.suggestions;
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}
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@override
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Animation<double> get transitionAnimation => proxyAnimation;
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FocusNode? focusNode;
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final TextEditingController queryTextController = TextEditingController();
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final ProxyAnimation proxyAnimation = ProxyAnimation(kAlwaysDismissedAnimation);
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@override
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String get query => queryTextController.text;
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@override
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set query(String value) {
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queryTextController.text = value;
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if (queryTextController.text.isNotEmpty) {
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queryTextController.selection = TextSelection.fromPosition(TextPosition(offset: queryTextController.text.length));
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}
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}
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final ValueNotifier<SearchBody?> currentBodyNotifier = ValueNotifier(null);
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SearchBody? get currentBody => currentBodyNotifier.value;
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set currentBody(SearchBody? value) {
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currentBodyNotifier.value = value;
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}
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SearchPageRoute? route;
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}
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