alexeyinkin commented on code in PR #23378:
URL: https://github.com/apache/beam/pull/23378#discussion_r982148816
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playground/frontend/playground_components/lib/src/services/symbols/symbols_notifier.dart:
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@@ -0,0 +1,36 @@
+import 'dart:async';
+
+import 'package:flutter/widgets.dart';
+import 'package:highlight/highlight_core.dart';
+
+import '../../models/symbols_dictionary.dart';
+import 'loaders/abstract.dart';
+
+class SymbolsNotifier extends ChangeNotifier {
+ final _dictionaryFuturesByByMode = <Mode, Future<SymbolsDictionary>>{};
+ final _dictionariesByMode = <Mode, SymbolsDictionary>{};
+
+ void addLoader(Mode mode, AbstractSymbolsLoader loader) {
+ unawaited(_load(mode, loader));
+ }
+
+ Future<SymbolsDictionary> _load(
+ Mode mode,
+ AbstractSymbolsLoader loader,
+ ) async {
+ final future = _dictionaryFuturesByByMode[mode];
+
+ if (future != null) {
+ return future;
+ }
+
+ _dictionaryFuturesByByMode[mode] = loader.future;
+
+ final dictionary = await loader.future;
+ _dictionariesByMode[mode] = dictionary;
+ notifyListeners();
+ return dictionary;
+ }
+
+ SymbolsDictionary? getDictionary(Mode mode) => _dictionariesByMode[mode];
Review Comment:
It's in the WIP that will replace the editor with ours.
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