MovieSceneLatentActionManager.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Delegates/Delegate.h"
#include "Templates/Function.h"
#include "Containers/ContainersFwd.h"
 
class UObject;
 
// using "not checked" user policy (means race detection is disabled) because this delegate is stored in a TArray and causes its reallocation
// from inside delegate's execution. This is incompatible with race detection that needs to access the delegate instance after its execution
using FMovieSceneSequenceLatentActionDelegate = TDelegate<void(), FNotThreadSafeNotCheckedDelegateUserPolicy>;
 
class FMovieSceneLatentActionManager
{
public:
    MOVIESCENE_API void AddLatentAction(FMovieSceneSequenceLatentActionDelegate Delegate);
    MOVIESCENE_API void ClearLatentActions(UObject* Object);
    MOVIESCENE_API void ClearLatentActions();
 
    MOVIESCENE_API void RunLatentActions(TFunctionRef<void()> FlushCallback);
 
    bool IsEmpty() const { return LatentActions.Num() == 0; }
 
private:
    TArray<FMovieSceneSequenceLatentActionDelegate> LatentActions;
 
    bool bIsRunningLatentActions = false;
};