// Copyright Epic Games, Inc. All Rights Reserved.

/**
 * Editor only class for UI of linking animation curve to joints
 */

#pragma once

#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/Object.h"
#include "BoneContainer.h"
#include "Animation/SmartName.h"
#include "EditorAnimCurveBoneLinks.generated.h"

class IEditableSkeleton;
struct FPropertyChangedEvent;

DECLARE_DELEGATE_OneParam(FOnAnimCurveBonesChange, class UEditorAnimCurveBoneLinks*)

    UCLASS(MinimalAPI)
class UEditorAnimCurveBoneLinks: public UObject
{
    GENERATED_UCLASS_BODY()
public:
    virtual void Initialize(const TWeakPtr<class IEditableSkeleton> InEditableSkeleton, const FSmartName& InCurveName, FOnAnimCurveBonesChange OnChangeIn);

    TWeakPtr<class IEditableSkeleton> EditableSkeleton;
    FOnAnimCurveBonesChange OnChange;

    UPROPERTY(VisibleAnywhere, Category = CurveName)
    FSmartName CurveName;

    UPROPERTY(EditAnywhere, Category = Bones)
    TArray<FBoneReference> ConnectedBones;

    /** Max (Lowest) LOD to evaluate to curve.
     *  Since LOD goes from 0 to high number, we call it Max.
     *  For example, if you have 3 LODs (0, 1, 2), and if you want this to work until LOD 1, type 1.
     *  Then the curve will be evaluated until LOD1, but not for LOD 2
     *  Default value is 255 */
    UPROPERTY(EditAnywhere, Category = LOD)
    uint8 MaxLOD;

    virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;

    // refresh current Connected Bones data
    UNREALED_API void Refresh(const FSmartName& InCurveName, const TArray<FBoneReference>& CurrentLinks, uint8 InMaxLOD);
};