unitysamples / LyraStarterGame /Plugins /GameSettings /Source /Private /Registry /GameSettingRegistryChangeTracker.cpp
| // Copyright Epic Games, Inc. All Rights Reserved. | |
| FGameSettingRegistryChangeTracker::FGameSettingRegistryChangeTracker() | |
| { | |
| } | |
| FGameSettingRegistryChangeTracker::~FGameSettingRegistryChangeTracker() | |
| { | |
| if (UGameSettingRegistry* StrongRegistry = Registry.Get()) | |
| { | |
| StrongRegistry->OnSettingChangedEvent.RemoveAll(this); | |
| } | |
| } | |
| void FGameSettingRegistryChangeTracker::WatchRegistry(UGameSettingRegistry* InRegistry) | |
| { | |
| ClearDirtyState(); | |
| StopWatchingRegistry(); | |
| if (Registry.Get() != InRegistry) | |
| { | |
| Registry = InRegistry; | |
| InRegistry->OnSettingChangedEvent.AddRaw(this, &FGameSettingRegistryChangeTracker::HandleSettingChanged); | |
| } | |
| } | |
| void FGameSettingRegistryChangeTracker::StopWatchingRegistry() | |
| { | |
| if (UGameSettingRegistry* StrongRegistry = Registry.Get()) | |
| { | |
| StrongRegistry->OnSettingChangedEvent.RemoveAll(this); | |
| Registry.Reset(); | |
| } | |
| } | |
| void FGameSettingRegistryChangeTracker::ClearDirtyState() | |
| { | |
| ensure(!bRestoringSettings); | |
| if (bRestoringSettings) | |
| { | |
| return; | |
| } | |
| bSettingsChanged = false; | |
| DirtySettings.Reset(); | |
| } | |
| void FGameSettingRegistryChangeTracker::ApplyChanges() | |
| { | |
| for (auto Entry : DirtySettings) | |
| { | |
| if (UGameSettingValue* SettingValue = Cast<UGameSettingValue>(Entry.Value)) | |
| { | |
| SettingValue->Apply(); | |
| SettingValue->StoreInitial(); | |
| } | |
| } | |
| ClearDirtyState(); | |
| } | |
| void FGameSettingRegistryChangeTracker::RestoreToInitial() | |
| { | |
| ensure(!bRestoringSettings); | |
| if (bRestoringSettings) | |
| { | |
| return; | |
| } | |
| { | |
| TGuardValue<bool> LocalGuard(bRestoringSettings, true); | |
| for (auto Entry : DirtySettings) | |
| { | |
| if (UGameSettingValue* SettingValue = Cast<UGameSettingValue>(Entry.Value)) | |
| { | |
| SettingValue->RestoreToInitial(); | |
| } | |
| } | |
| } | |
| ClearDirtyState(); | |
| } | |
| void FGameSettingRegistryChangeTracker::HandleSettingChanged(UGameSetting* Setting, EGameSettingChangeReason Reason) | |
| { | |
| if (bRestoringSettings) | |
| { | |
| return; | |
| } | |
| bSettingsChanged = true; | |
| DirtySettings.Add(FObjectKey(Setting), Setting); | |
| } | |