125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
#include "K2Node_CSAsyncAction.h"
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#include "BlueprintActionDatabaseRegistrar.h"
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#include "BlueprintFunctionNodeSpawner.h"
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#include "BlueprintNodeSpawner.h"
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#include "Delegates/Delegate.h"
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#include "EdGraph/EdGraphNode.h"
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#include "Extensions/BlueprintActions/CSBlueprintAsyncActionBase.h"
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#include "HAL/Platform.h"
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#include "Misc/AssertionMacros.h"
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#include "Templates/Casts.h"
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#include "Templates/SubclassOf.h"
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#include "TypeGenerator/CSClass.h"
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#include "UObject/Class.h"
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#include "UObject/Field.h"
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#include "UObject/NameTypes.h"
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#include "UObject/ObjectPtr.h"
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#include "UObject/UnrealType.h"
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#include "UObject/WeakObjectPtrTemplates.h"
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#define LOCTEXT_NAMESPACE "K2Node"
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UK2Node_CSAsyncAction::UK2Node_CSAsyncAction()
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{
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ProxyActivateFunctionName = GET_FUNCTION_NAME_CHECKED(UCSBlueprintAsyncActionBase, Activate);
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}
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void UK2Node_CSAsyncAction::SetNodeFunc(UEdGraphNode* NewNode, bool /*bIsTemplateNode*/, TWeakObjectPtr<UFunction> FunctionPtr)
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{
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UK2Node_CSAsyncAction* AsyncTaskNode = CastChecked<UK2Node_CSAsyncAction>(NewNode);
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if (FunctionPtr.IsValid())
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{
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UFunction* Func = FunctionPtr.Get();
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FObjectProperty* ReturnProp = CastFieldChecked<FObjectProperty>(Func->GetReturnProperty());
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AsyncTaskNode->ProxyFactoryFunctionName = Func->GetFName();
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AsyncTaskNode->ProxyFactoryClass = Func->GetOuterUClass();
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AsyncTaskNode->ProxyClass = ReturnProp->PropertyClass;
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}
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}
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void UK2Node_CSAsyncAction::GetMenuActions(FBlueprintActionDatabaseRegistrar& ActionRegistrar) const
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{
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struct GetMenuActions_Utils
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{
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static bool IsFactoryMethod(const UFunction* Function, const UClass* InTargetType)
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{
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if (!Function->HasAnyFunctionFlags(FUNC_Static))
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{
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return false;
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}
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if (!Function->GetOwnerClass()->HasAnyClassFlags(CLASS_Deprecated | CLASS_NewerVersionExists))
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{
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FObjectProperty* ReturnProperty = CastField<FObjectProperty>(Function->GetReturnProperty());
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// see if the function is a static factory method
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bool const bIsFactoryMethod = (ReturnProperty != nullptr) && (ReturnProperty->PropertyClass != nullptr) &&
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ReturnProperty->PropertyClass->IsChildOf(InTargetType);
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return bIsFactoryMethod;
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}
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else
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{
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return false;
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}
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}
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static UBlueprintNodeSpawner* MakeAction(UClass* NodeClass, const UFunction* FactoryFunc)
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{
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UClass* FactoryClass = FactoryFunc ? FactoryFunc->GetOwnerClass() : nullptr;
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if (FactoryClass && FactoryClass->HasMetaData(TEXT("HasDedicatedAsyncNode")))
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{
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// Wants to use a more specific blueprint node to handle the async action
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return nullptr;
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}
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UBlueprintNodeSpawner* NodeSpawner = UBlueprintFunctionNodeSpawner::Create(FactoryFunc);
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check(NodeSpawner != nullptr);
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NodeSpawner->NodeClass = NodeClass;
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TWeakObjectPtr<UFunction> FunctionPtr = MakeWeakObjectPtr(const_cast<UFunction*>(FactoryFunc));
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NodeSpawner->CustomizeNodeDelegate = UBlueprintNodeSpawner::FCustomizeNodeDelegate::CreateStatic(SetNodeFunc, FunctionPtr);
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return NodeSpawner;
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}
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};
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UClass* NodeClass = GetClass();
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UClass* TargetType = UCSBlueprintAsyncActionBase::StaticClass();
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for (TObjectIterator<UCSClass> ClassIt; ClassIt; ++ClassIt)
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{
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UCSClass* Class = *ClassIt;
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if (Class->HasAnyClassFlags(CLASS_Abstract) || !Class->IsChildOf(TargetType))
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{
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continue;
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}
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for (TFieldIterator<UFunction> FuncIt(Class, EFieldIteratorFlags::ExcludeSuper); FuncIt; ++FuncIt)
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{
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UFunction* Function = *FuncIt;
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if (!GetMenuActions_Utils::IsFactoryMethod(Function, TargetType))
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{
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continue;
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}
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else if (UBlueprintNodeSpawner* NewAction = GetMenuActions_Utils::MakeAction(NodeClass, Function))
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{
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ActionRegistrar.AddBlueprintAction(Class, NewAction);
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}
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}
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}
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}
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void UK2Node_CSAsyncAction::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
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{
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if (ProxyClass->bLayoutChanging)
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{
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return;
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}
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Super::ExpandNode(CompilerContext, SourceGraph);
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}
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#undef LOCTEXT_NAMESPACE
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