TransformableRegistry.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/Map.h"
#include "HAL/Platform.h"
#include "Templates/Function.h"
 
class UClass;
class UObject;
class UTransformableHandle;
 
class FTransformableRegistry
{
public:
 
    using CreateHandleFuncT = TFunction<UTransformableHandle*(UObject*, const FName&)>;
    using GetHashFuncT = TFunction<uint32(const UObject*, const FName&)>;
    
    CONSTRAINTS_API ~FTransformableRegistry();
 
    static CONSTRAINTS_API FTransformableRegistry& Get();
 
    CONSTRAINTS_API void Register(UClass* InClass, CreateHandleFuncT InHandleFunc, GetHashFuncT InHashFunc);
 
    CONSTRAINTS_API GetHashFuncT GetHashFunction(const UClass* InClass) const;
    CONSTRAINTS_API CreateHandleFuncT GetCreateFunction(const UClass* InClass) const;
 
protected:
    friend class FConstraintsModule;
 
    static CONSTRAINTS_API void RegisterBaseObjects();
    static CONSTRAINTS_API void UnregisterAllObjects();
    
private:
    FTransformableRegistry() = default;
 
    struct FTransformableInfo
    {
        CreateHandleFuncT CreateHandleFunc;
        GetHashFuncT GetHashFunc;
    };
 
    CONSTRAINTS_API const FTransformableInfo* FindInfo(const UClass* InClass) const;
 
    TMap<UClass*, FTransformableInfo> Transformables;
};