46 lines
1.1 KiB
Dart
46 lines
1.1 KiB
Dart
import 'package:flutter/foundation.dart';
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class AppBarState extends ChangeNotifier {
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static AppBarState? _singleton = AppBarState._internal();
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factory AppBarState() {
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return _singleton ?? (_singleton = AppBarState._internal());
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}
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AppBarState._internal() {}
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List<void Function(String)> _searchListeners = [];
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bool _loadingIndeterminate = false;
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bool get loadingIndeterminate => _loadingIndeterminate;
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bool _showSearchField = false;
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bool get showSearchField => _showSearchField;
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void setLoadingIndeterminate(bool v) {
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if (_loadingIndeterminate == v) return;
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_loadingIndeterminate = v;
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notifyListeners();
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}
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void setShowSearchField(bool v) {
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if (_showSearchField == v) return;
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_showSearchField = v;
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notifyListeners();
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}
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void subscribeSearchListener(void Function(String) listener) {
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_searchListeners.add(listener);
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}
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void unsubscribeSearchListener(void Function(String) listener) {
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_searchListeners.remove(listener);
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}
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void notifySearchListeners(String query) {
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for (var listener in _searchListeners) {
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listener(query);
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}
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}
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}
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