UnrealEngineUWP/Engine/Plugins/Runtime/Metasound/Source/MetasoundEditor/Private/MetasoundNodeDetailCustomization.cpp

// Copyright Epic Games, Inc. All Rights Reserved.
#include "MetasoundNodeDetailCustomization.h"

#include "Analysis/MetasoundFrontendAnalyzerAddress.h"
#include "Components/AudioComponent.h"
#include "Containers/Set.h"
#include "Delegates/Delegate.h"
#include "Framework/Notifications/NotificationManager.h"
#include "HAL/PlatformApplicationMisc.h"
#include "IDetailChildrenBuilder.h"
#include "IDetailGroup.h"
#include "Internationalization/Text.h"
#include "MetasoundDataReference.h"
#include "MetasoundDataReferenceMacro.h"
#include "MetasoundEditorGraphBuilder.h"
#include "MetasoundEditorGraphInputNode.h"
#include "MetasoundEditorGraphSchema.h"
#include "MetasoundFrontend.h"
#include "MetasoundFrontendController.h"
#include "MetasoundFrontendDataTypeRegistry.h"
#include "MetasoundFrontendRegistries.h"
#include "Modules/ModuleManager.h"
#include "PropertyCustomizationHelpers.h"
#include "PropertyEditorDelegates.h"
#include "SAssetDropTarget.h"
#include "SMetasoundActionMenu.h"
#include "SMetasoundGraphNode.h"
#include "SSearchableComboBox.h"
#include "Styling/SlateColor.h"
#include "Templates/Casts.h"
#include "Templates/SharedPointer.h"
#include "Templates/UniquePtr.h"
#include "UObject/WeakObjectPtr.h"
#include "UObject/WeakObjectPtrTemplates.h"
#include "Widgets/Images/SImage.h"
#include "Widgets/Input/SButton.h"
#include "Widgets/Notifications/SNotificationList.h"
#include "Widgets/SToolTip.h"
#include "Widgets/SWidget.h"
#include "Widgets/Text/STextBlock.h"


#define LOCTEXT_NAMESPACE "MetaSoundEditor"

namespace Metasound
{
	namespace Editor
	{
		namespace MemberCustomizationPrivate
		{
			/** Set of input types which are valid registered types, but should
			 * not show up as an input type option in the MetaSound editor. */
			static const TSet<FName> HiddenInputTypeNames =
			{
				"Audio:Mono",
				"Audio:Stereo",
				GetMetasoundDataTypeName<Frontend::FAnalyzerAddress>(),
				"MetasoundParameterPack"
			};

			static const FText OverrideInputDefaultText = LOCTEXT("OverridePresetInputDefault", "Override Inherited Default");
			static const FText OverrideInputDefaultTooltip = LOCTEXT("OverridePresetInputTooltip",
				"Enables overriding the input's inherited default value otherwise provided by the referenced graph. Setting to true disables auto-updating the input's default value if modified on the referenced asset.");

			static const FText ConstructorPinText = LOCTEXT("ConstructorPinText", "Is Constructor Pin");
			static const FText ConstructorPinTooltip = LOCTEXT("ConstructorPinTooltip",
				"Whether this input or output is a constructor pin. Constructor values are only read on construction (on play), and are not dynamically updated at runtime.");

			void GetDataTypeFromElementPropertyHandle(TSharedPtr<IPropertyHandle> ElementPropertyHandle, Frontend::FDataTypeRegistryInfo& OutDataTypeInfo)
			{
				using namespace Frontend;

				TArray<UObject*>OuterObjects;
				ElementPropertyHandle->GetOuterObjects(OuterObjects);
				if (OuterObjects.Num() == 1)
				{
					UObject* Outer = OuterObjects.Last();
					if (const UMetasoundEditorGraphMemberDefaultLiteral* DefaultLiteral = Cast<UMetasoundEditorGraphMemberDefaultLiteral>(Outer))
					{
						if (const UMetasoundEditorGraphMember* Member = Cast<UMetasoundEditorGraphMember>(DefaultLiteral->GetOuter()))
						{
							FName DataTypeName = Member->GetDataType();
							ensure(IDataTypeRegistry::Get().GetDataTypeInfo(DataTypeName, OutDataTypeInfo));
							if (OutDataTypeInfo.bIsArrayType)
							{
								DataTypeName = CreateElementTypeNameFromArrayTypeName(DataTypeName);
								const bool bIsHiddenType = HiddenInputTypeNames.Contains(DataTypeName);
								OutDataTypeInfo = { };
								if (!bIsHiddenType)
								{
									ensure(IDataTypeRegistry::Get().GetDataTypeInfo(DataTypeName, OutDataTypeInfo));
								}
							}
						}
					}
				}
			}

			// If DataType is an array type, creates & returns the array's
			// element type. Otherwise, returns this type's DataTypeName.
			FName GetPrimitiveTypeName(const Frontend::FDataTypeRegistryInfo& InDataTypeInfo)
			{
				return InDataTypeInfo.bIsArrayType
					? CreateElementTypeNameFromArrayTypeName(InDataTypeInfo.DataTypeName)
					: InDataTypeInfo.DataTypeName;
			}
		} // namespace MemberCustomizationPrivate

		FMetasoundFloatLiteralCustomization::~FMetasoundFloatLiteralCustomization()
		{
			if (FloatLiteral.IsValid())
			{
				FloatLiteral->OnClampChanged.Remove(OnClampChangedDelegateHandle);
			}
		}

		TArray<IDetailPropertyRow*> FMetasoundFloatLiteralCustomization::CustomizeLiteral(UMetasoundEditorGraphMemberDefaultLiteral& InLiteral, IDetailLayoutBuilder& InDetailLayout)
		{
			check(DefaultCategoryBuilder);

			UMetasoundEditorGraphMemberDefaultFloat* DefaultFloat = Cast<UMetasoundEditorGraphMemberDefaultFloat>(&InLiteral);
			if (!ensure(DefaultFloat))
			{
				return { };
			}
			FloatLiteral = DefaultFloat;

			TArray<IDetailPropertyRow*> DefaultRows;
			TSharedPtr<IPropertyHandle> DefaultValueHandle;
			IDetailPropertyRow* Row = DefaultCategoryBuilder->AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), UMetasoundEditorGraphMemberDefaultFloat::GetDefaultPropertyName());
			if (ensure(Row))
			{
				DefaultRows.Add(Row);
				DefaultValueHandle = Row->GetPropertyHandle();
			}

			// Apply the clamp range to the default value if not using a widget and ClampDefault is true
			const bool bUsingWidget = DefaultFloat->WidgetType != EMetasoundMemberDefaultWidget::None;
			const bool bShouldClampDefaultValue = bUsingWidget || (!bUsingWidget && DefaultFloat->ClampDefault);

			IDetailPropertyRow* ClampRow = DefaultCategoryBuilder->AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultFloat, ClampDefault));
			if (ensure(ClampRow))
			{
				DefaultRows.Add(ClampRow);

				if (DefaultValueHandle.IsValid())
				{
					if (bShouldClampDefaultValue)
					{
						FVector2D Range = DefaultFloat->GetRange();
						DefaultValueHandle->SetInstanceMetaData("ClampMin", FString::Printf(TEXT("%f"), Range.X));
						DefaultValueHandle->SetInstanceMetaData("ClampMax", FString::Printf(TEXT("%f"), Range.Y));
					}
					else // Stop clamping
					{
						DefaultValueHandle->SetInstanceMetaData("ClampMin", "");
						DefaultValueHandle->SetInstanceMetaData("ClampMax", "");
					}
				}

				DefaultFloat->OnClampChanged.Remove(OnClampChangedDelegateHandle);
				OnClampChangedDelegateHandle = DefaultFloat->OnClampChanged.AddLambda([this](bool ClampInput)
				{
					if (FloatLiteral.IsValid())
					{
						FloatLiteral->OnClampChanged.Remove(OnClampChangedDelegateHandle);
						if (FMetasoundAssetBase* MetasoundAsset = Metasound::IMetasoundUObjectRegistry::Get().GetObjectAsAssetBase(FloatLiteral->GetOutermostObject()))
						{
							if (const UMetasoundEditorGraphMember* Member = Cast<UMetasoundEditorGraphMember>(FloatLiteral->GetOuter()))
							{
								MetasoundAsset->GetModifyContext().AddMemberIDsModified({ Member->GetMemberID() });
							}
						}
					}
				});

				if (bShouldClampDefaultValue)
				{
					IDetailPropertyRow* RangeRow = DefaultCategoryBuilder->AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultFloat, Range));
					if (ensure(RangeRow))
					{
						DefaultRows.Add(RangeRow);
					}
				}
			}

			// Enable widget options for editable inputs only 
			bool bShowWidgetOptions = false;
			if (const UMetasoundEditorGraphInput* ParentMember = Cast <UMetasoundEditorGraphInput>(InLiteral.GetParentMember()))
			{
				if (const UMetasoundEditorGraph* OwningGraph = ParentMember->GetOwningGraph())
				{
					// Disable widget options for constructor inputs for now to prevent changing default value via widget while playing 
					bShowWidgetOptions = OwningGraph->IsEditable() && ParentMember->GetVertexAccessType() == EMetasoundFrontendVertexAccessType::Reference;
				}
			}

			// add input widget properties
			if (bShowWidgetOptions)
			{
				IDetailCategoryBuilder& WidgetCategoryBuilder = InDetailLayout.EditCategory("EditorOptions");
				DefaultRows.Add(WidgetCategoryBuilder.AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultFloat, WidgetType)));
				DefaultRows.Add(WidgetCategoryBuilder.AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultFloat, WidgetOrientation)));
				DefaultRows.Add(WidgetCategoryBuilder.AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultFloat, WidgetValueType)));
				if (DefaultFloat->WidgetType != EMetasoundMemberDefaultWidget::None && DefaultFloat->WidgetValueType == EMetasoundMemberDefaultWidgetValueType::Volume)
				{
					DefaultRows.Add(WidgetCategoryBuilder.AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultFloat, VolumeWidgetUseLinearOutput)));
					if (DefaultFloat->VolumeWidgetUseLinearOutput)
					{
						DefaultRows.Add(WidgetCategoryBuilder.AddExternalObjectProperty(TArray<UObject*>({ DefaultFloat }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultFloat, VolumeWidgetDecibelRange)));
					}
				}
			}

			return DefaultRows;
		}

		TArray<IDetailPropertyRow*> FMetasoundObjectArrayLiteralCustomization::CustomizeLiteral(UMetasoundEditorGraphMemberDefaultLiteral& InLiteral, IDetailLayoutBuilder& InDetailLayout)
		{
			check(DefaultCategoryBuilder);

			TSharedPtr<IPropertyHandle> DefaultValueHandle;
			IDetailPropertyRow* Row = DefaultCategoryBuilder->AddExternalObjectProperty(TArray<UObject*>({ &InLiteral }), GET_MEMBER_NAME_CHECKED(UMetasoundEditorGraphMemberDefaultObjectArray, Default));
			if (ensure(Row))
			{
				DefaultValueHandle = Row->GetPropertyHandle();
			}

			constexpr bool bShowChildren = true;
			Row->ShowPropertyButtons(false)
			.CustomWidget(bShowChildren)
			.NameContent()
			[
				DefaultValueHandle->CreatePropertyNameWidget()
			]
			.ValueContent()
			[
				SNew(SAssetDropTarget)
				.bSupportsMultiDrop(true)
				.OnAreAssetsAcceptableForDropWithReason_Lambda([this, DefaultValueHandle](TArrayView<FAssetData> InAssets, FText& OutReason)
				{
					Frontend::FDataTypeRegistryInfo DataTypeInfo;
					MemberCustomizationPrivate::GetDataTypeFromElementPropertyHandle(DefaultValueHandle, DataTypeInfo);

					const IMetasoundEditorModule& EditorModule = FModuleManager::GetModuleChecked<IMetasoundEditorModule>("MetaSoundEditor");
					bool bCanDrop = false;

					if (UClass* ProxyGenClass = DataTypeInfo.ProxyGeneratorClass)
					{
						bCanDrop = true;
						for (const FAssetData& AssetData : InAssets)
						{
							if (UClass* Class = AssetData.GetClass())
							{
PRAGMA_DISABLE_DEPRECATION_WARNINGS
								if (EditorModule.IsExplicitProxyClass(*DataTypeInfo.ProxyGeneratorClass))
								{
									bCanDrop &= Class == DataTypeInfo.ProxyGeneratorClass;
									continue;
								}
PRAGMA_ENABLE_DEPRECATION_WARNINGS
								if (DataTypeInfo.bIsExplicit)
								{
									bCanDrop &= Class == DataTypeInfo.ProxyGeneratorClass;
								}
								else
								{
									bCanDrop &= Class->IsChildOf(DataTypeInfo.ProxyGeneratorClass);
								}
							}
						}
					}

					return bCanDrop;
				})
				.OnAssetsDropped_Lambda([this, DefaultValueHandle](const FDragDropEvent& DragDropEvent, TArrayView<FAssetData> InAssets)
				{
					if (DefaultValueHandle.IsValid())
					{
						TSharedPtr<IPropertyHandleArray> ArrayHandle = DefaultValueHandle->AsArray();
						if (ensure(ArrayHandle.IsValid()))
						{
							for (const FAssetData& AssetData : InAssets)
							{
								uint32 AddIndex = INDEX_NONE;
								ArrayHandle->GetNumElements(AddIndex);
								ArrayHandle->AddItem();
								TSharedPtr<IPropertyHandle> ElementHandle = ArrayHandle->GetElement(static_cast<int32>(AddIndex));
								TSharedPtr<IPropertyHandle> ObjectHandle = ElementHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FMetasoundEditorGraphMemberDefaultObjectRef, Object));
								ObjectHandle->SetValue(AssetData.GetAsset());
							}
						}
					}
				})
				[
					DefaultValueHandle->CreatePropertyValueWidget()
				]
			];

			return { Row };
		}

		FText FMetasoundMemberDefaultBoolDetailCustomization::GetPropertyNameOverride() const
		{
			using namespace MemberCustomizationPrivate;

			if (GetPrimitiveTypeName(DataTypeInfo) == Metasound::GetMetasoundDataTypeName<Metasound::FTrigger>())
			{
				return LOCTEXT("TriggerInput_SimulateTitle", "Simulate");
			}

			return FText::GetEmpty();
		}

		TSharedRef<SWidget> FMetasoundMemberDefaultBoolDetailCustomization::CreateStructureWidget(TSharedPtr<IPropertyHandle>& StructPropertyHandle) const
		{
			using namespace Frontend;
			using namespace MemberCustomizationPrivate;

			TSharedPtr<IPropertyHandle> ValueProperty = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FMetasoundEditorGraphMemberDefaultBoolRef, Value));
			if (ValueProperty.IsValid())
			{
				// Not a trigger, so just display as underlying literal type (bool)
				if (GetPrimitiveTypeName(DataTypeInfo) != Metasound::GetMetasoundDataTypeName<Metasound::FTrigger>())
				{
					return ValueProperty->CreatePropertyValueWidget();
				}

				TAttribute<bool> EnablementAttribute = false;
				TAttribute<EVisibility> VisibilityAttribute = EVisibility::Visible;

				TArray<UObject*> OuterObjects;
				ValueProperty->GetOuterObjects(OuterObjects);
				if (!OuterObjects.IsEmpty())
				{
					if (UMetasoundEditorGraphMemberDefaultLiteral* Literal = Cast<UMetasoundEditorGraphMemberDefaultLiteral>(OuterObjects.Last()))
					{
						if (UMetasoundEditorGraphInput* Input = Cast<UMetasoundEditorGraphInput>(Literal->GetParentMember()))
						{
							// Don't display trigger simulation widget if its a trigger
							// provided by an interface that does not support transmission.
							const FInterfaceRegistryKey Key = GetInterfaceRegistryKey(Input->GetInterfaceVersion());
							const IInterfaceRegistryEntry* Entry = IInterfaceRegistry::Get().FindInterfaceRegistryEntry(Key);
							if (!Entry || Entry->GetRouterName() == Audio::IParameterTransmitter::RouterName)
							{
								EnablementAttribute = true;
								return SMetaSoundGraphNode::CreateTriggerSimulationWidget(*Literal, MoveTemp(VisibilityAttribute), MoveTemp(EnablementAttribute));
							}

							const FText DisabledToolTip = LOCTEXT("NonTransmittibleInputTriggerSimulationDisabledTooltip", "Trigger simulation disabled: Parent interface does not support being updated by game thread parameters.");
							return SMetaSoundGraphNode::CreateTriggerSimulationWidget(*Literal, MoveTemp(VisibilityAttribute), MoveTemp(EnablementAttribute), &DisabledToolTip);
						}
					}
				}
			}

			return SNullWidget::NullWidget;
		}

		TSharedRef<SWidget> FMetasoundMemberDefaultIntDetailCustomization::CreateStructureWidget(TSharedPtr<IPropertyHandle>& StructPropertyHandle) const
		{
			using namespace Frontend;
			using namespace MemberCustomizationPrivate;

			if (FMetasoundFrontendRegistryContainer* Registry = FMetasoundFrontendRegistryContainer::Get())
			{
				TSharedPtr<IPropertyHandle> ValueProperty = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FMetasoundEditorGraphMemberDefaultIntRef, Value));
				if (ValueProperty.IsValid())
				{
					TSharedPtr<const IEnumDataTypeInterface> EnumInterface = IDataTypeRegistry::Get().GetEnumInterfaceForDataType(GetPrimitiveTypeName(DataTypeInfo));

					// Not an enum, so just display as underlying type (int32)
					if (!EnumInterface.IsValid())
					{
						return ValueProperty->CreatePropertyValueWidget();
					}

					auto GetAll = [Interface = EnumInterface](TArray<TSharedPtr<FString>>& OutStrings, TArray<TSharedPtr<SToolTip>>& OutTooltips, TArray<bool>&)
					{
						for (const IEnumDataTypeInterface::FGenericInt32Entry& i : Interface->GetAllEntries())
						{
							OutTooltips.Emplace(SNew(SToolTip).Text(i.Tooltip));
							OutStrings.Emplace(MakeShared<FString>(i.DisplayName.ToString()));
						}
					};
					auto GetValue = [Interface = EnumInterface, Prop = ValueProperty]()
					{
						int32 IntValue;
						if (Prop->GetValue(IntValue) != FPropertyAccess::Success)
						{
							IntValue = Interface->GetDefaultValue();
							UE_LOG(LogMetasoundEditor, Warning, TEXT("Failed to read int Property '%s', defaulting."), *GetNameSafe(Prop->GetProperty()));
						}
						if (TOptional<IEnumDataTypeInterface::FGenericInt32Entry> Result = Interface->FindByValue(IntValue))
						{
							return Result->DisplayName.ToString();
						}
						UE_LOG(LogMetasoundEditor, Warning, TEXT("Failed to resolve int value '%d' to a valid enum value for enum '%s'"),
							IntValue, *Interface->GetNamespace().ToString());

						// Return default (should always succeed as we can't have empty Enums and we must have a default).
						return Interface->FindByValue(Interface->GetDefaultValue())->DisplayName.ToString();
					};
					auto SelectedValue = [Interface = EnumInterface, Prop = ValueProperty](const FString& InSelected)
					{
						TOptional<IEnumDataTypeInterface::FGenericInt32Entry> Found =
							Interface->FindEntryBy([TextSelected = FText::FromString(InSelected)](const IEnumDataTypeInterface::FGenericInt32Entry& i)
						{
							return i.DisplayName.EqualTo(TextSelected);
						});

						if (Found)
						{
							// Only save the changes if its different and we can read the old value to check that.
							int32 CurrentValue;
							bool bReadCurrentValue = Prop->GetValue(CurrentValue) == FPropertyAccess::Success;
							if ((bReadCurrentValue && CurrentValue != Found->Value) || !bReadCurrentValue)
							{
								ensure(Prop->SetValue(Found->Value) == FPropertyAccess::Success);
							}
						}
						else
						{
							UE_LOG(LogMetasoundEditor, Warning, TEXT("Failed to Set Valid Value for Property '%s' with Value of '%s', writing default."),
								*GetNameSafe(Prop->GetProperty()), *InSelected);

							ensure(Prop->SetValue(Interface->GetDefaultValue()) == FPropertyAccess::Success);
						}
					};

					return PropertyCustomizationHelpers::MakePropertyComboBox(
						nullptr,
						FOnGetPropertyComboBoxStrings::CreateLambda(GetAll),
						FOnGetPropertyComboBoxValue::CreateLambda(GetValue),
						FOnPropertyComboBoxValueSelected::CreateLambda(SelectedValue)
					);
				}
			}

			return SNullWidget::NullWidget;
		}

		TSharedRef<SWidget> FMetasoundMemberDefaultObjectDetailCustomization::CreateStructureWidget(TSharedPtr<IPropertyHandle>& StructPropertyHandle) const
		{
			TSharedPtr<IPropertyHandle> PropertyHandle = StructPropertyHandle->GetChildHandle(GET_MEMBER_NAME_CHECKED(FMetasoundEditorGraphMemberDefaultObjectRef, Object));

			const IMetasoundEditorModule& EditorModule = FModuleManager::GetModuleChecked<IMetasoundEditorModule>("MetaSoundEditor");
			auto FilterAsset = [InEditorModule = &EditorModule, &InDataTypeInfo = DataTypeInfo](const FAssetData& InAsset)
			{
				if (InDataTypeInfo.ProxyGeneratorClass)
				{
					if (UClass* Class = InAsset.GetClass())
					{
PRAGMA_DISABLE_DEPRECATION_WARNINGS
						if (InEditorModule->IsExplicitProxyClass(*InDataTypeInfo.ProxyGeneratorClass))
						{
							return Class != InDataTypeInfo.ProxyGeneratorClass;
						}
PRAGMA_ENABLE_DEPRECATION_WARNINGS
						if (InDataTypeInfo.bIsExplicit)
						{
							return Class != InDataTypeInfo.ProxyGeneratorClass;
						}

						return !Class->IsChildOf(InDataTypeInfo.ProxyGeneratorClass);
					}
				}

				return true;
			};

			auto ValidateAsset = [FilterAsset](const FAssetData& InAsset)
			{
				// A null asset reference is a valid default
				return InAsset.IsValid() ? !FilterAsset(InAsset) : true;
			};

			auto GetAssetPath = [PropertyHandle = PropertyHandle]()
			{
				UObject* Object = nullptr;
				if (PropertyHandle->GetValue(Object) == FPropertyAccess::Success)
				{
					return Object->GetPathName();
				}
				return FString();
			};

			return SNew(SObjectPropertyEntryBox)
				.AllowClear(true)
				.AllowedClass(DataTypeInfo.ProxyGeneratorClass)
				.DisplayBrowse(true)
				.DisplayThumbnail(true)
				.DisplayUseSelected(true)
				.NewAssetFactories(PropertyCustomizationHelpers::GetNewAssetFactoriesForClasses({DataTypeInfo.ProxyGeneratorClass }))
				.ObjectPath_Lambda(GetAssetPath)
				.OnShouldFilterAsset_Lambda(FilterAsset)
				.OnShouldSetAsset_Lambda(ValidateAsset)
				.PropertyHandle(PropertyHandle);
		}

		TSharedRef<SWidget> FMetasoundDefaultMemberElementDetailCustomizationBase::CreateNameWidget(TSharedPtr<IPropertyHandle> StructPropertyHandle) const
		{
			const FText PropertyName = GetPropertyNameOverride();
			if (!PropertyName.IsEmpty())
			{
				return SNew(STextBlock)
					.Font(IDetailLayoutBuilder::GetDetailFont())
					.Text(PropertyName);
			}

			return SNew(STextBlock)
				.Text(MemberCustomizationStyle::DefaultPropertyText)
				.Font(IDetailLayoutBuilder::GetDetailFont());
		}

		TSharedRef<SWidget> FMetasoundDefaultMemberElementDetailCustomizationBase::CreateValueWidget(TSharedPtr<IPropertyHandleArray> ParentPropertyHandleArray, TSharedPtr<IPropertyHandle> StructPropertyHandle) const
		{
			TSharedRef<SWidget> ValueWidget = CreateStructureWidget(StructPropertyHandle);
			if (!ParentPropertyHandleArray.IsValid())
			{
				return ValueWidget;
			}

			TSharedPtr<IPropertyHandle> StructPropertyPtr = StructPropertyHandle;
			FExecuteAction InsertAction = FExecuteAction::CreateLambda([ParentPropertyHandleArray, StructPropertyPtr]
			{
				const int32 ArrayIndex = StructPropertyPtr.IsValid() ? StructPropertyPtr->GetIndexInArray() : INDEX_NONE;
				if (ParentPropertyHandleArray.IsValid() && ArrayIndex >= 0)
				{
					ParentPropertyHandleArray->Insert(ArrayIndex);
				}
			});

			FExecuteAction DeleteAction = FExecuteAction::CreateLambda([ParentPropertyHandleArray, StructPropertyPtr]
			{
				const int32 ArrayIndex = StructPropertyPtr.IsValid() ? StructPropertyPtr->GetIndexInArray() : INDEX_NONE;
				if (ParentPropertyHandleArray.IsValid() && ArrayIndex >= 0)
				{
					ParentPropertyHandleArray->DeleteItem(ArrayIndex);
				}
			});

			FExecuteAction DuplicateAction = FExecuteAction::CreateLambda([ParentPropertyHandleArray, StructPropertyPtr]
			{
				const int32 ArrayIndex = StructPropertyPtr.IsValid() ? StructPropertyPtr->GetIndexInArray() : INDEX_NONE;
				if (ParentPropertyHandleArray.IsValid() && ArrayIndex >= 0)
				{
					ParentPropertyHandleArray->DuplicateItem(ArrayIndex);
				}
			});

			return SNew(SHorizontalBox)
				+ SHorizontalBox::Slot()
				.FillWidth(1.0f)
				.Padding(1.0f, 0.0f, 0.0f, 0.0f)
				.VAlign(VAlign_Center)
				[
					ValueWidget
				]
				+ SHorizontalBox::Slot()
				.AutoWidth()
				.Padding(-6.0f, 0.0f, 0.0f, 0.0f) // Negative padding intentional on the left to bring the dropdown closer to the other buttons
				.VAlign(VAlign_Center)
				[
					PropertyCustomizationHelpers::MakeInsertDeleteDuplicateButton(InsertAction, DeleteAction, DuplicateAction)
				];
		}

		void FMetasoundDefaultMemberElementDetailCustomizationBase::CustomizeChildren(TSharedRef<IPropertyHandle> StructPropertyHandle, IDetailChildrenBuilder& ChildBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
		{
			TSharedPtr<IPropertyHandleArray> ParentPropertyHandleArray;
			TSharedPtr<IPropertyHandle> ElementPropertyHandle = StructPropertyHandle;
			if (ElementPropertyHandle.IsValid())
			{
				TSharedPtr<IPropertyHandle> ParentProperty = ElementPropertyHandle->GetParentHandle();
				while (ParentProperty.IsValid() && ParentProperty->GetProperty() != nullptr)
				{
					ParentPropertyHandleArray = ParentProperty->AsArray();
					if (ParentPropertyHandleArray.IsValid())
					{
						ElementPropertyHandle = ParentProperty;
						break;
					}
				}
			}

			MemberCustomizationPrivate::GetDataTypeFromElementPropertyHandle(ElementPropertyHandle, DataTypeInfo);

			TSharedRef<SWidget> ValueWidget = CreateValueWidget(ParentPropertyHandleArray, StructPropertyHandle);
			FDetailWidgetRow& ValueRow = ChildBuilder.AddCustomRow(MemberCustomizationStyle::DefaultPropertyText);
			if (ParentPropertyHandleArray.IsValid())
			{
				ValueRow.NameContent()
				[
					StructPropertyHandle->CreatePropertyNameWidget()
				];
			}
			else
			{
				ValueRow.NameContent()
				[
					CreateNameWidget(StructPropertyHandle)
				];
			}

			TArray<UObject*> OuterObjects;
			StructPropertyHandle->GetOuterObjects(OuterObjects);
			TArray<TWeakObjectPtr<UMetasoundEditorGraphInput>> Inputs;
			for (UObject* Object : OuterObjects)
			{
				if (UMetasoundEditorGraphInput* Input = Cast<UMetasoundEditorGraphInput>(Object))
				{
					Inputs.Add(Input);
				}
			}

			FSimpleDelegate UpdateFrontendDefaultLiteral = FSimpleDelegate::CreateLambda([InInputs = Inputs]()
			{
				for (const TWeakObjectPtr<UMetasoundEditorGraphInput>& GraphInput : InInputs)
				{
					if (GraphInput.IsValid())
					{
						constexpr bool bPostTransaction = true;
						GraphInput->UpdateFrontendDefaultLiteral(bPostTransaction);
					}
				}
			});
			StructPropertyHandle->SetOnChildPropertyValueChanged(UpdateFrontendDefaultLiteral);

			ValueRow.ValueContent()
			[
				ValueWidget
			];
		}

		void FMetasoundDefaultMemberElementDetailCustomizationBase::CustomizeHeader(TSharedRef<IPropertyHandle> StructPropertyHandle, FDetailWidgetRow& HeaderRow, IPropertyTypeCustomizationUtils& StructCustomizationUtils)
		{
		}

		FName FMetasoundDataTypeSelector::GetDataType() const
		{
			if (GraphMember.IsValid())
			{
				return GraphMember->GetDataType();
			}

			return FName();
		}

		void FMetasoundDataTypeSelector::OnDataTypeSelected(FName InSelectedTypeName)
		{
			FName NewDataTypeName;
			FName ArrayDataTypeName = CreateArrayTypeNameFromElementTypeName(InSelectedTypeName);

			// Update data type based on "Is Array" checkbox and support for arrays.
			// If an array type is not supported, default to the base data type.
			if (DataTypeArrayCheckbox->GetCheckedState() == ECheckBoxState::Checked)
			{
				if (Frontend::IDataTypeRegistry::Get().IsRegistered(ArrayDataTypeName))
				{
					NewDataTypeName = ArrayDataTypeName;
				}
				else
				{
					ensure(Frontend::IDataTypeRegistry::Get().IsRegistered(InSelectedTypeName));
					NewDataTypeName = InSelectedTypeName;
				}
			}
			else
			{
				if (Frontend::IDataTypeRegistry::Get().IsRegistered(InSelectedTypeName))
				{
					NewDataTypeName = InSelectedTypeName;
				}
				else
				{
					ensure(Frontend::IDataTypeRegistry::Get().IsRegistered(ArrayDataTypeName));
					NewDataTypeName = ArrayDataTypeName;
				}
			}

			if (NewDataTypeName == GraphMember->GetDataType())
			{
				return;
			}

			// Have to stop playback to avoid attempting to change live edit data on invalid input type.
			check(GEditor);
			GEditor->ResetPreviewAudioComponent();

			if (GraphMember.IsValid())
			{
				GraphMember->SetDataType(NewDataTypeName);
			}
		}

		void FMetasoundDataTypeSelector::AddDataTypeSelector(IDetailLayoutBuilder& InDetailLayout, const FText& InRowName, TWeakObjectPtr<UMetasoundEditorGraphMember> InGraphMember, bool bIsEnabled)
		{
			using namespace Frontend;

			if (!InGraphMember.IsValid())
			{
				return;
			}

			GraphMember = InGraphMember;

			FDataTypeRegistryInfo DataTypeInfo;
			if (!ensure(IDataTypeRegistry::Get().GetDataTypeInfo(InGraphMember->GetDataType(), DataTypeInfo)))
			{
				return;
			}

			if (DataTypeInfo.bIsArrayType)
			{
				ArrayTypeName = GraphMember->GetDataType();
				BaseTypeName = CreateElementTypeNameFromArrayTypeName(InGraphMember->GetDataType());
			}
			else
			{
				ArrayTypeName = CreateArrayTypeNameFromElementTypeName(InGraphMember->GetDataType());
				BaseTypeName = GraphMember->GetDataType();
			}

			IMetasoundEditorModule& EditorModule = FModuleManager::GetModuleChecked<IMetasoundEditorModule>("MetaSoundEditor");

			// Not all types have an equivalent array type. Base types without array
			// types should have the "Is Array" checkbox disabled.
			const bool bIsArrayTypeRegistered = IDataTypeRegistry::Get().IsRegistered(ArrayTypeName);
			const bool bIsArrayTypeRegisteredHidden = MemberCustomizationPrivate::HiddenInputTypeNames.Contains(ArrayTypeName);

			TArray<FName> BaseDataTypes;
			IDataTypeRegistry::Get().IterateDataTypeInfo([&BaseDataTypes](const FDataTypeRegistryInfo& RegistryInfo)
			{
				// Hide the type from the combo selector if any of the following is true
				const bool bIsHiddenType = MemberCustomizationPrivate::HiddenInputTypeNames.Contains(RegistryInfo.DataTypeName);
				const bool bHideBaseType = RegistryInfo.bIsArrayType || RegistryInfo.bIsVariable || bIsHiddenType;
				if (!bHideBaseType)
				{
					BaseDataTypes.Add(RegistryInfo.DataTypeName);
				}
			});

			BaseDataTypes.Sort([](const FName& DataTypeNameL, const FName& DataTypeNameR)
			{
				return DataTypeNameL.LexicalLess(DataTypeNameR);
			});

			Algo::Transform(BaseDataTypes, ComboOptions, [](const FName& Name) { return MakeShared<FString>(Name.ToString()); });

			InDetailLayout.EditCategory("General").AddCustomRow(InRowName)
			.IsEnabled(bIsEnabled)
			.NameContent()
			[
				SNew(STextBlock)
				.Text(InRowName)
				.Font(IDetailLayoutBuilder::GetDetailFontBold())
			]
			.ValueContent()
			[
				SNew(SHorizontalBox)
				+ SHorizontalBox::Slot()
				.AutoWidth()
				.HAlign(HAlign_Left)
				.VAlign(VAlign_Center)
				.Padding(1.0f, 0.0f, 0.0f, 0.0f)
				[
					SAssignNew(DataTypeComboBox, SSearchableComboBox)
					.OptionsSource(&ComboOptions)
					.OnGenerateWidget_Lambda([](TSharedPtr<FString> InItem)
					{
						return SNew(STextBlock)
							.Text(FText::FromString(*InItem));
					})
					.OnSelectionChanged_Lambda([this](TSharedPtr<FString> InNewName, ESelectInfo::Type InSelectInfo)
					{
						if (InSelectInfo != ESelectInfo::OnNavigation)
						{
							OnDataTypeSelected(FName(*InNewName));
						}
					})
					.Content()
					[
						SNew(STextBlock)
						.Text_Lambda([this]()
						{
							return FText::FromName(BaseTypeName);
						})
					]
				]
				+ SHorizontalBox::Slot()
				.AutoWidth()
				.HAlign(HAlign_Right)
				.VAlign(VAlign_Center)
				.Padding(2.0f, 0.0f, 0.0f, 0.0f)
				[
					SAssignNew(DataTypeArrayCheckbox, SCheckBox)
					.IsEnabled(bIsArrayTypeRegistered && !bIsArrayTypeRegisteredHidden)
					.IsChecked_Lambda([this, InGraphMember]()
					{
						return OnGetDataTypeArrayCheckState(InGraphMember);
					})
					.OnCheckStateChanged_Lambda([this, InGraphMember](ECheckBoxState InNewState)
					{
						OnDataTypeArrayChanged(InGraphMember, InNewState);
					})
					[
						SNew(STextBlock)
						.Text(LOCTEXT("Node_IsArray", "Is Array"))
						.Font(IDetailLayoutBuilder::GetDetailFont())
					]
				]
			];

			auto NameMatchesPredicate = [TypeString = BaseTypeName.ToString()](const TSharedPtr<FString>& Item) { return *Item == TypeString; };
			const TSharedPtr<FString>* SelectedItem = ComboOptions.FindByPredicate(NameMatchesPredicate);
			if (ensure(SelectedItem))
			{
				DataTypeComboBox->SetSelectedItem(*SelectedItem, ESelectInfo::Direct);
			}
		}

		ECheckBoxState FMetasoundDataTypeSelector::OnGetDataTypeArrayCheckState(TWeakObjectPtr<UMetasoundEditorGraphMember> InGraphMember) const
		{
			using namespace Frontend;

			if (InGraphMember.IsValid())
			{
				FDataTypeRegistryInfo DataTypeInfo;
				if (ensure(IDataTypeRegistry::Get().GetDataTypeInfo(InGraphMember->GetDataType(), DataTypeInfo)))
				{
					return DataTypeInfo.bIsArrayType ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
				}
			}

			return ECheckBoxState::Undetermined;
		}

		void FMetasoundDataTypeSelector::OnDataTypeArrayChanged(TWeakObjectPtr<UMetasoundEditorGraphMember> InGraphMember, ECheckBoxState InNewState)
		{
			if (InGraphMember.IsValid() && DataTypeComboBox.IsValid())
			{
				TSharedPtr<FString> DataTypeRoot = DataTypeComboBox->GetSelectedItem();
				if (ensure(DataTypeRoot.IsValid()))
				{
					// Have to stop playback to avoid attempting to change live edit data on invalid input type.
					check(GEditor);
					GEditor->ResetPreviewAudioComponent();

					const FName DataType = InNewState == ECheckBoxState::Checked ? ArrayTypeName : BaseTypeName;
					InGraphMember->SetDataType(DataType);
				}
			}
		}

		void FMetasoundMemberDetailCustomization::UpdateRenameDelegate(UMetasoundEditorGraphMember& InMember)
		{
			if (InMember.CanRename())
			{
				if (!RenameRequestedHandle.IsValid())
				{
					InMember.OnRenameRequested.Clear();
					RenameRequestedHandle = InMember.OnRenameRequested.AddLambda([this]()
					{
						FSlateApplication::Get().SetKeyboardFocus(NameEditableTextBox.ToSharedRef(), EFocusCause::SetDirectly);
					});
				}
			}
		}

		void FMetasoundMemberDetailCustomization::CacheMemberData(IDetailLayoutBuilder& InDetailLayout)
		{
			TArray<TWeakObjectPtr<UObject>> Objects;
			InDetailLayout.GetObjectsBeingCustomized(Objects);
			if (!Objects.IsEmpty())
			{
				GraphMember = Cast<UMetasoundEditorGraphMember>(Objects.Last().Get());

				TSharedPtr<IPropertyHandle> LiteralHandle = InDetailLayout.GetProperty(UMetasoundEditorGraphMember::GetLiteralPropertyName());
				if (ensure(GraphMember.IsValid()) && ensure(LiteralHandle.IsValid()))
				{
					// Always hide, even if no customization (LiteralObject isn't found) as this is the case
					// where the default object is not required (i.e. Default Member is default constructed)
					LiteralHandle->MarkHiddenByCustomization();
				}
			}
		}

		TArray<IDetailPropertyRow*> FMetasoundMemberDetailCustomization::CustomizeDefaultCategory(IDetailLayoutBuilder& InDetailLayout)
		{
			TArray<IDetailPropertyRow*> DefaultPropertyRows;

			if (!GraphMember.IsValid())
			{
				return DefaultPropertyRows;
			}

			UpdateRenameDelegate(*GraphMember);

			if (UMetasoundEditorGraphMemberDefaultLiteral* MemberDefaultLiteral = GraphMember->GetLiteral())
			{
				UClass* MemberClass = MemberDefaultLiteral->GetClass();
				check(MemberClass);

				IDetailCategoryBuilder& DefaultCategoryBuilder = GetDefaultCategoryBuilder(InDetailLayout);
				IMetasoundEditorModule& EditorModule = FModuleManager::GetModuleChecked<IMetasoundEditorModule>("MetaSoundEditor");
				TUniquePtr<FMetasoundDefaultLiteralCustomizationBase> LiteralCustomization = EditorModule.CreateMemberDefaultLiteralCustomization(*MemberClass, DefaultCategoryBuilder);
				if (LiteralCustomization.IsValid())
				{
					DefaultPropertyRows = LiteralCustomization->CustomizeLiteral(*MemberDefaultLiteral, InDetailLayout);
				}
				else
				{
					IDetailPropertyRow* DefaultPropertyRow = DefaultCategoryBuilder.AddExternalObjectProperty(TArray<UObject*>({ MemberDefaultLiteral }), "Default");
					ensureMsgf(DefaultPropertyRow, TEXT("Class '%s' missing expected 'Default' member."
						"Either add/rename default member or register customization to display default value/opt out appropriately."),
						*MemberClass->GetName());
					DefaultPropertyRows.Add(DefaultPropertyRow);
				}
			}

			for (IDetailPropertyRow* Row : DefaultPropertyRows)
			{
				if (ensure(Row))
				{
					Row->Visibility(TAttribute<EVisibility>::CreateLambda([this]()
					{
						return GetDefaultVisibility();
					}));
				}
			}

			return DefaultPropertyRows;
		}

		void FMetasoundMemberDetailCustomization::CustomizeGeneralCategory(IDetailLayoutBuilder& InDetailLayout)
		{
			IDetailCategoryBuilder& CategoryBuilder = GetGeneralCategoryBuilder(InDetailLayout);
			const bool bIsReadOnly = IsInterfaceMember() || !IsGraphEditable(); 

			// Override row copy action if it's disabled by the edit condition 
			auto GenerateCopyPasteActions = [](FDetailWidgetRow& Row, const FString& Value)
			{
				FUIAction CopyAction(FExecuteAction::CreateLambda([Value]()
				{
					FPlatformApplicationMisc::ClipboardCopy(*Value);
				}));
				Row.CopyAction(CopyAction);

				// Create a dummy paste action
				// Needed because the custom copy action will only be set 
				// if both the copy and paste actions are bound
				// Pasting is still available directly via the text box if editable
				const static FUIAction PasteAction(FExecuteAction::CreateLambda([]() {}), FCanExecuteAction::CreateLambda([]() { return false; }));
				Row.PasteAction(PasteAction);
			};

			NameEditableTextBox = SNew(SEditableTextBox)
				.Text(this, &FMetasoundMemberDetailCustomization::GetName)
				.OnTextChanged(this, &FMetasoundMemberDetailCustomization::OnNameChanged)
				.OnTextCommitted(this, &FMetasoundMemberDetailCustomization::OnNameCommitted)
				.IsReadOnly(bIsReadOnly)
				.SelectAllTextWhenFocused(true)
				.Font(IDetailLayoutBuilder::GetDetailFont());

			static const FText MemberNameToolTipFormat = LOCTEXT("GraphMember_NameDescriptionFormat", "Name used within the MetaSounds editor(s) and transacting systems (ex. Blueprints) if applicable to reference the given {0}.");
			FDetailWidgetRow& NameRow = CategoryBuilder.AddCustomRow(LOCTEXT("GraphMember_NameProperty", "Name"))
				.EditCondition(!bIsReadOnly, nullptr)
				.NameContent()
				[
					SNew(STextBlock)
					.Font(IDetailLayoutBuilder::GetDetailFontBold())
					.Text(GraphMember->GetGraphMemberLabel())
					.ToolTipText(FText::Format(MemberNameToolTipFormat, GraphMember->GetGraphMemberLabel()))
				]
				.ValueContent()
				[
					NameEditableTextBox.ToSharedRef()
				];
			GenerateCopyPasteActions(NameRow, GetName().ToString());

			static const FText MemberDisplayNameText = LOCTEXT("GraphMember_DisplayNameProperty", "Display Name");
			static const FText MemberDisplayNameToolTipFormat = LOCTEXT("GraphMember_DisplayNameDescriptionFormat", "Optional, localized name used within the MetaSounds editor(s) to describe the given {0}.");
			const FText MemberDisplayNameTooltipText = FText::Format(MemberDisplayNameToolTipFormat, GraphMember->GetGraphMemberLabel());

			TSharedRef<FGraphMemberEditableTextDisplayName> DisplayNameValueText = MakeShared<FGraphMemberEditableTextDisplayName>(GraphMember, MemberDisplayNameTooltipText);
			FDetailWidgetRow& DisplayNameRow = CategoryBuilder.AddCustomRow(MemberDisplayNameText)
				.EditCondition(!bIsReadOnly, nullptr)
				.NameContent()
				[
					SNew(STextBlock)
					.Font(IDetailLayoutBuilder::GetDetailFontBold())
					.Text(MemberDisplayNameText)
					.ToolTipText(MemberDisplayNameTooltipText)
				]
				.ValueContent()
				[
					SNew(STextPropertyEditableTextBox, DisplayNameValueText)
					.WrapTextAt(500)
					.MinDesiredWidth(25.0f)
					.MaxDesiredHeight(200)
				];
			GenerateCopyPasteActions(DisplayNameRow, DisplayNameValueText->GetText(0).ToString());

			static const FText MemberDescriptionText = LOCTEXT("Member_DescriptionPropertyName", "Description");
			static const FText MemberDescriptionToolTipFormat = LOCTEXT("Member_DescriptionToolTipFormat", "Description for {0}. For example, used as a tooltip when displayed on another graph's referencing node.");
			const FText MemberDescriptionToolTipText = FText::Format(MemberDescriptionToolTipFormat, GraphMember->GetGraphMemberLabel());
			TSharedRef<FGraphMemberEditableTextDescription> DescriptionValueText = MakeShared<FGraphMemberEditableTextDescription>(GraphMember, MemberDescriptionToolTipText);
			FDetailWidgetRow& DescriptionRow = CategoryBuilder.AddCustomRow(MemberDescriptionText)
				.IsEnabled(true)
				.EditCondition(!bIsReadOnly, nullptr)
				.NameContent()
				[
					SNew(STextBlock)
					.Font(IDetailLayoutBuilder::GetDetailFontBold())
					.Text(MemberDescriptionText)
					.ToolTipText(MemberDescriptionToolTipText)
				]
				.ValueContent()
				[
					SNew(STextPropertyEditableTextBox, DescriptionValueText)
					.WrapTextAt(500)
					.MinDesiredWidth(25.0f)
					.MaxDesiredHeight(200)
				];
			GenerateCopyPasteActions(DescriptionRow, DescriptionValueText->GetText(0).ToString());

			DataTypeSelector.AddDataTypeSelector(InDetailLayout, MemberCustomizationStyle::DataTypeNameText, GraphMember, !bIsReadOnly);
		}

		void FMetasoundMemberDetailCustomization::CustomizeDetails(IDetailLayoutBuilder& InDetailLayout)
		{
			CacheMemberData(InDetailLayout);
			if (GraphMember.IsValid())
			{
				CustomizeGeneralCategory(InDetailLayout);
				CustomizeDefaultCategory(InDetailLayout);
			}
		}

		void FMetasoundMemberDetailCustomization::OnNameChanged(const FText& InNewName)
		{
			using namespace Frontend;

			bIsNameInvalid = false;
			NameEditableTextBox->SetError(FText::GetEmpty());

			if (!ensure(GraphMember.IsValid()))
			{
				return;
			}

			FText Error;
			if (!GraphMember->CanRename(InNewName, Error))
			{
				bIsNameInvalid = true;
				NameEditableTextBox->SetError(Error);
			}
		}

		FText FMetasoundMemberDetailCustomization::GetName() const
		{
			if (GraphMember.IsValid())
			{
				return FText::FromName(GraphMember->GetMemberName());
			}

			return FText::GetEmpty();
		}

		Frontend::FDocumentHandle FMetasoundMemberDetailCustomization::GetDocumentHandle() const
		{
			if (GraphMember.IsValid())
			{
				if (UMetasoundEditorGraph* Graph = GraphMember->GetOwningGraph())
				{
					return Graph->GetDocumentHandle();
				}
			}

			return Frontend::IDocumentController::GetInvalidHandle();
		}

		bool FMetasoundMemberDetailCustomization::IsGraphEditable() const
		{
			if (GraphMember.IsValid())
			{
				if (const UMetasoundEditorGraph* OwningGraph = GraphMember->GetOwningGraph())
				{
					return OwningGraph->IsEditable();
				}
			}

			return false;
		}

		FText FMetasoundMemberDetailCustomization::GetDisplayName() const
		{
			using namespace Frontend;

			if (GraphMember.IsValid())
			{
				return GraphMember->GetDisplayName();
			}

			return FText::GetEmpty();
		}

		void FMetasoundMemberDetailCustomization::OnTooltipCommitted(const FText& InNewText, ETextCommit::Type InTextCommit)
		{
			using namespace Frontend;

			if (GraphMember.IsValid())
			{
				constexpr bool bPostTransaction = true;
				GraphMember->SetDescription(InNewText, bPostTransaction);
			}
		}

		FText FMetasoundMemberDetailCustomization::GetTooltip() const
		{
			if (GraphMember.IsValid())
			{
				return GraphMember->GetDescription();
			}

			return FText::GetEmpty();
		}

		EVisibility FMetasoundVertexDetailCustomization::GetDefaultVisibility() const
		{
			using namespace Frontend;

			if (GraphMember.IsValid())
			{
				bool bIsInputConnected = false;
				FConstNodeHandle NodeHandle = CastChecked<UMetasoundEditorGraphVertex>(GraphMember)->GetConstNodeHandle();
				if (NodeHandle->IsValid())
				{
					NodeHandle->IterateConstInputs([&bIsInputConnected](FConstInputHandle InputHandle)
					{
						bIsInputConnected |= InputHandle->IsConnectionUserModifiable() && InputHandle->IsConnected();
					});
				}
				return bIsInputConnected ? EVisibility::Collapsed : EVisibility::Visible;
			}

			return EVisibility::Collapsed;
		}

		void FMetasoundMemberDetailCustomization::OnNameCommitted(const FText& InNewName, ETextCommit::Type InTextCommit)
		{
			using namespace Frontend;

			if (!bIsNameInvalid && GraphMember.IsValid())
			{
				const FText TransactionLabel = FText::Format(LOCTEXT("RenameGraphMember_Format", "Set MetaSound {0}'s Name"), GraphMember->GetGraphMemberLabel());
				const FScopedTransaction Transaction(TransactionLabel);

				constexpr bool bPostTransaction = false;
				GraphMember->SetDisplayName(FText::GetEmpty(), bPostTransaction);
				GraphMember->SetMemberName(*InNewName.ToString(), bPostTransaction);
			}

			NameEditableTextBox->SetError(FText::GetEmpty());
			bIsNameInvalid = false;
		}

		void FMetasoundVertexDetailCustomization::AddConstructorPinRow(IDetailLayoutBuilder& InDetailLayout)
		{
			if (UMetasoundEditorGraphVertex* Vertex = Cast<UMetasoundEditorGraphVertex>(GraphMember.Get()))
			{
				InDetailLayout.EditCategory("General").AddCustomRow(MemberCustomizationPrivate::ConstructorPinText)
				.IsEnabled(IsGraphEditable() && !IsInterfaceMember())
				.NameContent()
				[
					SNew(STextBlock)
					.Text(MemberCustomizationPrivate::ConstructorPinText)
					.ToolTipText(MemberCustomizationPrivate::ConstructorPinTooltip)
					.Font(IDetailLayoutBuilder::GetDetailFontBold())
				]
				.ValueContent()
				[
					SAssignNew(ConstructorPinCheckbox, SCheckBox)
					.IsChecked_Lambda([this, Vertex]()
					{
						return OnGetConstructorPinCheckboxState(Vertex);
					})
					.OnCheckStateChanged_Lambda([this, Vertex](ECheckBoxState InNewState)
					{
						OnConstructorPinStateChanged(Vertex, InNewState);
					})
					[
						SNew(STextBlock)
						.Font(IDetailLayoutBuilder::GetDetailFont())
					]
				];
			}
		}
		
		void FMetasoundVertexDetailCustomization::CustomizeGeneralCategory(IDetailLayoutBuilder& InDetailLayout)
		{
			FMetasoundMemberDetailCustomization::CustomizeGeneralCategory(InDetailLayout);
			UMetasoundEditorGraphVertex* Vertex = Cast<UMetasoundEditorGraphVertex>(GraphMember.Get());
			if (!ensure(Vertex))
			{
				return;
			}

			// Constructor pin 
			Frontend::FDataTypeRegistryInfo DataTypeInfo;
			Frontend::IDataTypeRegistry::Get().GetDataTypeInfo(Vertex->GetDataType(), DataTypeInfo);
			if (DataTypeInfo.bIsConstructorType)
			{
				AddConstructorPinRow(InDetailLayout);
			}

			// Sort order
			IDetailCategoryBuilder& CategoryBuilder = FMetasoundMemberDetailCustomization::GetGeneralCategoryBuilder(InDetailLayout);
			TWeakObjectPtr<UMetasoundEditorGraphVertex> VertexPtr = Vertex;
			static const FText SortOrderText = LOCTEXT("Vertex_SortOrderPropertyName", "Sort Order");
			static const FText SortOrderToolTipFormat = LOCTEXT("Vertex_SortOrderToolTipFormat", "Sort Order for {0}. Used to organize pins in node view. The higher the number, the lower in the list.");
			const FText SortOrderToolTipText = FText::Format(SortOrderToolTipFormat, GraphMember->GetGraphMemberLabel());
			CategoryBuilder.AddCustomRow(SortOrderText)
				.EditCondition(IsGraphEditable(), nullptr)
				.NameContent()
				[
					SNew(STextBlock)
					.Font(IDetailLayoutBuilder::GetDetailFontBold())
					.Text(SortOrderText)
					.ToolTipText(SortOrderToolTipText)
				]
				.ValueContent()
				[
					SNew(SNumericEntryBox<int32>)
					.Value_Lambda([VertexPtr]() { return VertexPtr->GetSortOrderIndex(); })
					.AllowSpin(false)
					.UndeterminedString(LOCTEXT("Vertex_SortOrder_MultipleValues", "Multiple"))
					.OnValueCommitted_Lambda([VertexPtr](int32 NewValue, ETextCommit::Type CommitInfo)
					{
						if (!VertexPtr.IsValid())
						{
							return;
						}

						const FText TransactionTitle = FText::Format(LOCTEXT("SetVertexSortOrderFormat", "Set MetaSound Graph {0} '{1}' SortOrder to {2}"),
							VertexPtr->GetGraphMemberLabel(),
							VertexPtr->GetDisplayName(),
							FText::AsNumber(NewValue));
						FScopedTransaction Transaction(TransactionTitle);

						UObject* MetaSoundObject = VertexPtr->GetOutermostObject();
						FMetasoundAssetBase* MetaSoundAsset = Metasound::IMetasoundUObjectRegistry::Get().GetObjectAsAssetBase(MetaSoundObject);
						check(MetaSoundAsset);

						MetaSoundObject->Modify();
						MetaSoundAsset->GetGraphChecked().Modify();
						VertexPtr->Modify();

						VertexPtr->SetSortOrderIndex(NewValue);

						constexpr bool bInForceViewSynchronization = true;
						FGraphBuilder::RegisterGraphWithFrontend(*MetaSoundObject, bInForceViewSynchronization);
					})
					.Font(IDetailLayoutBuilder::GetDetailFont())
				];
		}

		bool FMetasoundVertexDetailCustomization::IsInterfaceMember() const
		{
			if (GraphMember.IsValid())
			{
				return CastChecked<UMetasoundEditorGraphVertex>(GraphMember)->IsInterfaceMember();
			}

			return false;
		}

		bool FMetasoundInputDetailCustomization::GetInputInheritsDefault() const
		{
			if (UMetasoundEditorGraphInput* Input = Cast<UMetasoundEditorGraphInput>(GraphMember.Get()))
			{
				const TSet<FName>& InputsInheritingDefault = GetDocumentHandle()->GetRootGraph()->GetInputsInheritingDefault();
				FName NodeName = Input->GetConstNodeHandle()->GetNodeName();
				return InputsInheritingDefault.Contains(NodeName);
			}

			return false;
		}

		void FMetasoundInputDetailCustomization::SetInputInheritsDefault()
		{
			if (UMetasoundEditorGraphInput* Input = Cast<UMetasoundEditorGraphInput>(GraphMember.Get()))
			{
				if (UMetasoundEditorGraphMemberDefaultLiteral* MemberDefaultLiteral = Input->GetLiteral())
				{
					FScopedTransaction Transaction(LOCTEXT("SetPresetInputOverrideTransaction", "Set MetaSound Preset Input Overridden"));

					Input->GetOutermost()->Modify();
					Input->Modify();
					MemberDefaultLiteral->Modify();

					constexpr bool bDefaultIsInherited = true;
					const FName NodeName = Input->GetConstNodeHandle()->GetNodeName();
					GetDocumentHandle()->GetRootGraph()->SetInputInheritsDefault(NodeName, bDefaultIsInherited);

					if (UObject* Metasound = Input->GetOutermostObject())
					{
						FGraphBuilder::RegisterGraphWithFrontend(*Metasound);
					}
				}
			}
		}

		void FMetasoundInputDetailCustomization::ClearInputInheritsDefault()
		{
			if (UMetasoundEditorGraphInput* Input = Cast<UMetasoundEditorGraphInput>(GraphMember.Get()))
			{
				if (UMetasoundEditorGraphMemberDefaultLiteral* MemberDefaultLiteral = Input->GetLiteral())
				{
					FScopedTransaction Transaction(LOCTEXT("ClearPresetInputOverrideTransaction", "Clear MetaSound Preset Input Overridden"));

					Input->GetOutermost()->Modify();
					Input->Modify();
					MemberDefaultLiteral->Modify();

					constexpr bool bDefaultIsInherited = false;
					const FName NodeName = Input->GetConstNodeHandle()->GetNodeName();
					GetDocumentHandle()->GetRootGraph()->SetInputInheritsDefault(NodeName, bDefaultIsInherited);

					Input->UpdateFrontendDefaultLiteral(false /* bPostTransaction */);

					if (UMetasoundEditorGraphMemberDefaultLiteral* Literal = Input->GetLiteral())
					{
						Literal->ForceRefresh();
					}

					if (UObject* Metasound = Input->GetOutermostObject())
					{
						FGraphBuilder::RegisterGraphWithFrontend(*Metasound);
					}
				}
			}
		}

		ECheckBoxState FMetasoundVertexDetailCustomization::OnGetConstructorPinCheckboxState(TWeakObjectPtr<UMetasoundEditorGraphVertex> InGraphVertex) const
		{
			if (InGraphVertex.IsValid())
			{
				return InGraphVertex->GetVertexAccessType() == EMetasoundFrontendVertexAccessType::Value ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
			}

			return ECheckBoxState::Undetermined;
		}

		void FMetasoundVertexDetailCustomization::OnConstructorPinStateChanged(TWeakObjectPtr<UMetasoundEditorGraphVertex> InGraphVertex, ECheckBoxState InNewState)
		{
			if (InGraphVertex.IsValid() && ConstructorPinCheckbox.IsValid())
			{
				EMetasoundFrontendVertexAccessType NewAccessType = InNewState == ECheckBoxState::Checked ? 
					EMetasoundFrontendVertexAccessType::Value : EMetasoundFrontendVertexAccessType::Reference;

				if (InGraphVertex->GetVertexAccessType() == NewAccessType)
				{
					return;
				}

				// Have to stop playback to avoid attempting to change live edit data on invalid input type.
				check(GEditor);
				GEditor->ResetPreviewAudioComponent();

				InGraphVertex->SetVertexAccessType(NewAccessType);
				
				if (FMetasoundAssetBase* MetasoundAsset = Metasound::IMetasoundUObjectRegistry::Get().GetObjectAsAssetBase(GraphMember->GetOutermostObject()))
				{
					MetasoundAsset->GetModifyContext().AddMemberIDsModified({ GraphMember->GetMemberID() });
				}
			}
		}

		void FMetasoundInputDetailCustomization::CustomizeDetails(IDetailLayoutBuilder& InDetailLayout)
		{
			CacheMemberData(InDetailLayout);
			if (!GraphMember.IsValid())
			{
				return;
			}

			CustomizeGeneralCategory(InDetailLayout);

			UMetasoundEditorGraphMemberDefaultLiteral* MemberDefaultLiteral = GraphMember->GetLiteral();
			if (!MemberDefaultLiteral)
			{
				return;
			}

			// Build preset row first if graph has managed interface, not default constructed, & not a trigger
			const bool bIsPreset = GetDocumentHandle()->GetRootGraphClass().PresetOptions.bIsPreset;
			const bool bIsDefaultConstructed = MemberDefaultLiteral->GetLiteralType() == EMetasoundFrontendLiteralType::None;
			const bool bIsTriggerDataType = GraphMember->GetDataType() == GetMetasoundDataTypeName<FTrigger>();

			if (bIsPreset && !bIsDefaultConstructed && !bIsTriggerDataType)
			{
				GetDefaultCategoryBuilder(InDetailLayout)
				.AddCustomRow(MemberCustomizationPrivate::OverrideInputDefaultText)
				.NameContent()
				[
					SNew(STextBlock)
					.Text(MemberCustomizationPrivate::OverrideInputDefaultText)
					.Font(IDetailLayoutBuilder::GetDetailFontBold())
					.ToolTipText(MemberCustomizationPrivate::OverrideInputDefaultTooltip)
				]
				.ValueContent()
				[
					SNew(SCheckBox)
					.OnCheckStateChanged_Lambda([this](ECheckBoxState State)
					{
						switch(State)
						{
							case ECheckBoxState::Checked:
							{
								ClearInputInheritsDefault();
								break;
							}
							case ECheckBoxState::Unchecked:
							case ECheckBoxState::Undetermined:
							default:
							{
								SetInputInheritsDefault();
							}
						}
					})
					.IsChecked_Lambda([this]() { return GetInputInheritsDefault() ? ECheckBoxState::Unchecked : ECheckBoxState::Checked; })
					.ToolTipText(MemberCustomizationPrivate::OverrideInputDefaultTooltip)
				];
			}

			TArray<IDetailPropertyRow*> DefaultPropertyRows = CustomizeDefaultCategory(InDetailLayout);

			if (bIsPreset && !bIsDefaultConstructed && !bIsTriggerDataType)
			{
				const UMetasoundEditorGraphInput* Input = Cast<UMetasoundEditorGraphInput>(MemberDefaultLiteral->GetParentMember());
				if (ensure(Input))
				{
					auto PropertyEnabled = TAttribute<bool>::CreateLambda([this] { return !GetInputInheritsDefault(); });
					for (IDetailPropertyRow* DefaultPropertyRow : DefaultPropertyRows)
					{
						DefaultPropertyRow->EditCondition(PropertyEnabled, { });
						FResetToDefaultOverride ResetOverride = FResetToDefaultOverride::Create(
							FIsResetToDefaultVisible::CreateLambda([this](TSharedPtr<IPropertyHandle> /* PropertyHandle */) { return !GetInputInheritsDefault(); }),
							FResetToDefaultHandler::CreateLambda([this](TSharedPtr<IPropertyHandle> /* PropertyHandle */) { SetInputInheritsDefault(); }));
						DefaultPropertyRow->OverrideResetToDefault(ResetOverride);
					}
				}
			} 
			else if (!bIsPreset)
			{
				// Make default value uneditable while playing for constructor inputs
				const UMetasoundEditorGraphInput* Input = Cast<UMetasoundEditorGraphInput>(MemberDefaultLiteral->GetParentMember());
				if (ensure(Input))
				{
					auto PropertyEnabled = TAttribute<bool>::CreateLambda([this, Input]
					{
						if (Input->GetVertexAccessType() == EMetasoundFrontendVertexAccessType::Value)
						{
							UObject* MetaSoundObject = Input->GetOutermostObject();
							if (TSharedPtr<FEditor> MetaSoundEditor = FGraphBuilder::GetEditorForMetasound(*MetaSoundObject))
							{
								return !MetaSoundEditor->IsPlaying();
							}
						}
						return true;
					});
					for (IDetailPropertyRow* DefaultPropertyRow : DefaultPropertyRows)
					{
						DefaultPropertyRow->EditCondition(PropertyEnabled, { });
					}
				}
			}
		}

		bool FMetasoundInputDetailCustomization::IsDefaultEditable() const
		{
			return !GetInputInheritsDefault();
		}

		EVisibility FMetasoundVariableDetailCustomization::GetDefaultVisibility() const
		{
			using namespace Frontend;

			if (GraphMember.IsValid())
			{
				bool bIsInputConnected = false;
				const UMetasoundEditorGraphVariable* Variable = CastChecked<UMetasoundEditorGraphVariable>(GraphMember);
				FConstNodeHandle NodeHandle = Variable->GetConstVariableHandle()->FindMutatorNode();
				if (NodeHandle->IsValid())
				{
					NodeHandle->IterateConstInputs([&bIsInputConnected](FConstInputHandle InputHandle)
					{
						bIsInputConnected |= InputHandle->IsConnectionUserModifiable() && InputHandle->IsConnected();
					});
				}
				return bIsInputConnected ? EVisibility::Collapsed : EVisibility::Visible;
			}

			return EVisibility::Collapsed;
		}

	} // namespace Editor
} // namespace Metasound
#undef LOCTEXT_NAMESPACE