SlateWidgetStyleAsset.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/Object.h"
#include "Styling/SlateWidgetStyle.h"
#include "Styling/SlateWidgetStyleContainerBase.h"
#include "SlateWidgetStyleAsset.generated.h"
 
class Error;
 
UCLASS(MinimalApi, hidecategories=Object)
class USlateWidgetStyleAsset : public UObject
{
    GENERATED_BODY()
          
public:  
    UPROPERTY(Category=Appearance, EditAnywhere, Instanced)
    TObjectPtr<USlateWidgetStyleContainerBase> CustomStyle;
 
    template< class WidgetStyleType >            
    const WidgetStyleType* GetStyle() const 
    {
        return static_cast< const WidgetStyleType* >( GetStyle( WidgetStyleType::TypeName ) );
    }
 
    template< class WidgetStyleType >            
    const WidgetStyleType* GetStyleChecked() const 
    {
        return static_cast< const WidgetStyleType* >( GetStyleChecked( WidgetStyleType::TypeName ) );
    }
 
    const FSlateWidgetStyle* GetStyle( const FName DesiredTypeName ) const 
    {
        if ( CustomStyle == nullptr )
        {
            return nullptr;
        }
 
        const FSlateWidgetStyle* Style = CustomStyle->GetStyle();
 
        if ( (Style == nullptr) || (Style->GetTypeName() != DesiredTypeName) )
        {
            return nullptr;
        }
 
        return Style;
    }
 
    const FSlateWidgetStyle* GetStyleChecked( const FName DesiredTypeName ) const 
    {
        if ( CustomStyle == nullptr )
        {
            UE_LOG( LogSlateStyle, Error, TEXT("USlateWidgetStyleAsset::GetStyle : No custom style set for '%s'."), *GetPathName() );
            return nullptr;
        }
 
        const FSlateWidgetStyle* Style = CustomStyle->GetStyle();
 
        if ( Style == nullptr )
        {
            UE_LOG( LogSlateStyle, Error, TEXT("USlateWidgetStyleAsset::GetStyle : No style found in custom style set for '%s'."), *GetPathName() );
            return nullptr;
        }
 
        if ( Style->GetTypeName() != DesiredTypeName )
        {
            UE_LOG( LogSlateStyle, Error, TEXT("USlateWidgetStyleAsset::GetStyle : The custom style is not of the desired type. Desired: '%s', Actual: '%s'"), *DesiredTypeName.ToString(), *Style->GetTypeName().ToString() );
            return nullptr;
        }
 
        return Style;
    }
};