61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "WidgetBlueprintExtension.h"
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#include "Engine/Blueprint.h"
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#include "WidgetBlueprint.h"
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#include UE_INLINE_GENERATED_CPP_BY_NAME(WidgetBlueprintExtension)
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UWidgetBlueprintExtension* UWidgetBlueprintExtension::RequestExtension(UWidgetBlueprint* InBlueprint, TSubclassOf<UWidgetBlueprintExtension> InExtensionType)
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{
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checkf(!InBlueprint->bBeingCompiled, TEXT("Do not use RequestExtension when a blueprint is being compiled."));
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// Look for an existing extension
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if (UWidgetBlueprintExtension* ExistingExtension = GetExtension(InBlueprint, InExtensionType))
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{
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return ExistingExtension;
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}
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// Not found, create one
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UWidgetBlueprintExtension* NewExtension = NewObject<UWidgetBlueprintExtension>(InBlueprint, InExtensionType.Get());
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InBlueprint->AddExtension(NewExtension);
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return NewExtension;
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}
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UWidgetBlueprintExtension* UWidgetBlueprintExtension::GetExtension(const UWidgetBlueprint* InBlueprint, TSubclassOf<UWidgetBlueprintExtension> InExtensionType)
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{
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// Look for an existing extension
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for (const TObjectPtr<UBlueprintExtension>& Extension : InBlueprint->GetExtensions())
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{
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if (Extension && Extension->GetClass() == InExtensionType)
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{
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return CastChecked<UWidgetBlueprintExtension>(Extension);
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}
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}
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return nullptr;
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}
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TArray<UWidgetBlueprintExtension*> UWidgetBlueprintExtension::GetExtensions(const UWidgetBlueprint* InBlueprint)
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{
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TArray<UWidgetBlueprintExtension*> Extensions;
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for (const TObjectPtr<UBlueprintExtension>& Extension : InBlueprint->GetExtensions())
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{
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if (Extension && Extension->GetClass()->IsChildOf(UWidgetBlueprintExtension::StaticClass()))
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{
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Extensions.Add(CastChecked<UWidgetBlueprintExtension>(Extension));
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}
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}
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return Extensions;
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}
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UWidgetBlueprint* UWidgetBlueprintExtension::GetWidgetBlueprint() const
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{
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return GetOuterUWidgetBlueprint();
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}
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