ISlateMetaData.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
 
class ISlateMetaData
{
public:
    template<class TType>
    bool IsOfType() const
    {
        return IsOfTypeImpl(TType::GetTypeId());
    }
 
    virtual ~ISlateMetaData() {}
 
protected:
    virtual bool IsOfTypeImpl(const FName& Type) const
    {
        return false;
    }
};
 
#define SLATE_METADATA_TYPE(TYPE, BASE) \
    static const FName& GetTypeId() { static FName Type(TEXT(#TYPE)); return Type; } \
    virtual bool IsOfTypeImpl(const FName& Type) const override { return GetTypeId() == Type || BASE::IsOfTypeImpl(Type); }
 
class FTagMetaData : public ISlateMetaData
{
public:
    SLATE_METADATA_TYPE(FTagMetaData, ISlateMetaData)
 
        FTagMetaData(FName InTag)
        : Tag(InTag)
    {}
 
    FName Tag;
};