SErrorText.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Misc/Attribute.h"
#include "Styling/SlateColor.h"
#include "Fonts/SlateFontInfo.h"
#include "Layout/Visibility.h"
#include "Widgets/DeclarativeSyntaxSupport.h"
#include "Widgets/SWidget.h"
#include "Styling/CoreStyle.h"
#include "Widgets/Layout/SBorder.h"
#include "Animation/CurveSequence.h"
#include "Widgets/Text/STextBlock.h"
 
class IErrorReportingWidget
{
public:
 
    virtual void SetError( const FString& InErrorText ) = 0;
    virtual void SetError( const FText& InErrorText ) = 0;
    virtual bool HasError() const = 0;
    virtual TSharedRef<SWidget> AsWidget() = 0;
};
 
 
class SErrorText
    : public SBorder
    , public IErrorReportingWidget
{
public:
 
    SLATE_BEGIN_ARGS( SErrorText )
        : _ErrorText()
        , _BackgroundColor(FCoreStyle::Get().GetColor("ErrorReporting.BackgroundColor"))
        , _Font()
        , _AutoWrapText(false)
    { }
 
        SLATE_ARGUMENT(FText, ErrorText)
        SLATE_ATTRIBUTE(FSlateColor, BackgroundColor)
        SLATE_ATTRIBUTE(FSlateFontInfo, Font)
        SLATE_ATTRIBUTE(bool, AutoWrapText)
        
    SLATE_END_ARGS()
 
    SLATE_API void Construct(const FArguments& InArgs);
 
public:
 
    // IErrorReportingWidget interface
 
    SLATE_API virtual void SetError( const FText& InErrorText ) override;
    SLATE_API virtual void SetError( const FString& InErrorText ) override;
    SLATE_API virtual bool HasError() const override;
    SLATE_API virtual TSharedRef<SWidget> AsWidget() override;
 
private:
 
    TAttribute< FSlateFontInfo > Font;
 
    TAttribute<EVisibility> CustomVisibility;
    EVisibility MyVisibility() const;
 
    TSharedPtr<class STextBlock> TextBlock;
 
    FVector2D GetDesiredSizeScale() const;
    FCurveSequence ExpandAnimation;
};