SlateInvalidationWidgetIndex.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/UnrealString.h"
#include "CoreMinimal.h"
#include "HAL/Platform.h"
 
class SWidget;
 
struct FSlateInvalidationWidgetIndex
{
    friend class FSlateInvalidationWidgetList;
    friend struct FSlateInvalidationWidgetSortOrder;
    
public:
    static const FSlateInvalidationWidgetIndex Invalid;
    bool operator== (FSlateInvalidationWidgetIndex Other) const { return ArrayIndex == Other.ArrayIndex && ElementIndex == Other.ElementIndex; }
    bool operator!= (FSlateInvalidationWidgetIndex Other) const { return ArrayIndex != Other.ArrayIndex || ElementIndex != Other.ElementIndex; }
    FString ToString() const { return FString::Printf(TEXT("{%d, %d}"), ArrayIndex, ElementIndex); }
    
private:
    using IndexType = uint16;
 
    FSlateInvalidationWidgetIndex(IndexType InArray, IndexType InElement) : ArrayIndex(InArray), ElementIndex(InElement) {}
 
    IndexType ArrayIndex;
    IndexType ElementIndex;
};