UnrealEngineUWP/Engine/Source/Editor/AnimGraph/Private/CustomPropertyOptionalPinManager.cpp

// Copyright Epic Games, Inc. All Rights Reserved.

#include "CustomPropertyOptionalPinManager.h"
#include "Kismet2/BlueprintEditorUtils.h"
#include "AnimGraphNode_CustomProperty.h"
#include "AnimationGraphSchema.h"

FCustomPropertyOptionalPinManager::FCustomPropertyOptionalPinManager(UAnimGraphNode_CustomProperty* InCustomPropertyNode, TArray<UEdGraphPin*>* InOldPins)
	: CustomPropertyNode(InCustomPropertyNode)
	, OldPins(InOldPins)
{
}

void FCustomPropertyOptionalPinManager::GetRecordDefaults(FProperty* TestProperty, FOptionalPinFromProperty& Record) const
{
	Record.bCanToggleVisibility = true;
	Record.bShowPin = !TestProperty->HasAnyPropertyFlags(CPF_DisableEditOnInstance);
	Record.bPropertyIsCustomized = false;
}

void FCustomPropertyOptionalPinManager::CustomizePinData(UEdGraphPin* Pin, FName SourcePropertyName, int32 ArrayIndex, FProperty* Property) const
{
	const UAnimationGraphSchema* Schema = GetDefault<UAnimationGraphSchema>();
	Schema->SetPinAutogeneratedDefaultValueBasedOnType(Pin);
}

bool FCustomPropertyOptionalPinManager::CanTreatPropertyAsOptional(FProperty* TestProperty) const
{
	const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();

	FEdGraphPinType PinType;
	return (TestProperty->HasAllPropertyFlags(CPF_Edit | CPF_BlueprintVisible) &&
			TestProperty->HasAllFlags(RF_Public) &&
			K2Schema->ConvertPropertyToPinType(TestProperty, PinType) &&
			!TestProperty->HasMetaData(FBlueprintMetadata::MD_Private));
}

void FCustomPropertyOptionalPinManager::CreateCustomPins(UClass* TargetClass)
{
	RebuildPropertyList(CustomPropertyNode->CustomPinProperties, TargetClass);
	CreateVisiblePins(CustomPropertyNode->CustomPinProperties, TargetClass, EGPD_Input, CustomPropertyNode, nullptr, nullptr);
}