void UK2Node_Variable::CreatePinForSelf()
{
const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();
// Create the self pin
if (!K2Schema->FindSelfPin(*this, EGPD_Input))
{
// Do not create a self pin for locally scoped variables
if( !VariableReference.IsLocalScope() )
{
bool bSelfTarget = VariableReference.IsSelfContext() && (ESelfContextInfo::NotSelfContext != SelfContextInfo);
UClass* MemberParentClass = VariableReference.GetMemberParentClass(GetBlueprintClassFromNode());
UClass* TargetClass = MemberParentClass;
// Self Target pins should always make the class be the owning class of the property,
// so if the node is from a Macro Blueprint, it will hook up as self in any placed Blueprint
if(bSelfTarget)
{
if(UProperty* Property = VariableReference.ResolveMember<UProperty>(GetBlueprintClassFromNode()))
{
TargetClass = Property->GetOwnerClass()->GetAuthoritativeClass();
}
else
{
TargetClass = GetBlueprint()->SkeletonGeneratedClass->GetAuthoritativeClass();
}
}
else if(MemberParentClass && MemberParentClass->ClassGeneratedBy)
{
TargetClass = MemberParentClass->GetAuthoritativeClass();
}
UEdGraphPin* TargetPin = CreatePin(EGPD_Input, K2Schema->PC_Object, TEXT(""), TargetClass, false, false, K2Schema->PN_Self);
TargetPin->PinFriendlyName = LOCTEXT("Target", "Target");
if (bSelfTarget)
{
TargetPin->bHidden = true; // don't show in 'self' context
}
}
}
else
{
//@TODO: Check that the self pin types match!
}
}
FText UK2Node_CallFunctionOnMember::GetFunctionContextString() const
{
UClass* MemberVarClass = MemberVariableToCallOn.GetMemberParentClass(GetBlueprintClassFromNode());
FText CallFunctionClassName = (MemberVarClass != NULL) ? MemberVarClass->GetDisplayNameText() : FText::GetEmpty();
FFormatNamedArguments Args;
Args.Add(TEXT("TargetName"), CallFunctionClassName);
Args.Add(TEXT("MemberVariableName"), FText::FromName(MemberVariableToCallOn.GetMemberName()));
return FText::Format(LOCTEXT("CallFunctionOnMemberDifferentContext", "Target is {TargetName} ({MemberVariableName})"), Args);
}
FName UK2Node_Variable::GetCornerIcon() const
{
const UProperty* VariableProperty = VariableReference.ResolveMember<UProperty>(GetBlueprintClassFromNode());
if (VariableProperty && VariableProperty->HasAllPropertyFlags(CPF_Net))
{
return TEXT("Graph.Replication.Replicated");
}
return Super::GetCornerIcon();
}
void UK2Node_Variable::CheckForErrors(const UEdGraphSchema_K2* Schema, FCompilerResultsLog& MessageLog)
{
if(!VariableReference.IsSelfContext() && VariableReference.GetMemberParentClass(GetBlueprintClassFromNode()) != NULL)
{
// Check to see if we're not a self context, if we have a valid context. It may have been purged because of a dead execution chain
UEdGraphPin* ContextPin = Schema->FindSelfPin(*this, EGPD_Input);
if((ContextPin != NULL) && (ContextPin->LinkedTo.Num() == 0) && (ContextPin->DefaultObject == NULL))
{
MessageLog.Error(*LOCTEXT("VarNodeError_InvalidVarTarget", "Variable node @@ uses an invalid target. It may depend on a node that is not connected to the execution chain, and got purged.").ToString(), this);
}
}
}
void UK2Node_Variable::AutowireNewNode(UEdGraphPin* FromPin)
{
const UEdGraphSchema_K2* K2Schema = CastChecked<UEdGraphSchema_K2>(GetSchema());
// Do some auto-connection
if (FromPin != NULL)
{
bool bConnected = false;
if(FromPin->Direction == EGPD_Output)
{
// If the source pin has a valid PinSubCategoryObject, we might be doing BP Comms, so check if it is a class
if(FromPin->PinType.PinSubCategoryObject.IsValid() && FromPin->PinType.PinSubCategoryObject->IsA(UClass::StaticClass()))
{
UProperty* VariableProperty = VariableReference.ResolveMember<UProperty>(GetBlueprintClassFromNode());
if(VariableProperty)
{
UClass* PropertyOwner = VariableProperty->GetOwnerClass();
if (PropertyOwner != nullptr)
{
PropertyOwner = PropertyOwner->GetAuthoritativeClass();
}
// BP Comms is highly likely at this point, if the source pin's type is a child of the variable's owner class, let's conform the "Target" pin
if(FromPin->PinType.PinSubCategoryObject == PropertyOwner || dynamic_cast<UClass*>(FromPin->PinType.PinSubCategoryObject.Get())->IsChildOf(PropertyOwner))
{
UEdGraphPin* TargetPin = FindPin(K2Schema->PN_Self);
if (TargetPin)
{
TargetPin->PinType.PinSubCategoryObject = PropertyOwner;
if(K2Schema->TryCreateConnection(FromPin, TargetPin))
{
bConnected = true;
// Setup the VariableReference correctly since it may no longer be a self member
VariableReference.SetFromField<UProperty>(GetPropertyForVariable(), false);
TargetPin->bHidden = false;
FromPin->GetOwningNode()->NodeConnectionListChanged();
this->NodeConnectionListChanged();
}
}
}
}
}
}
if(!bConnected)
{
Super::AutowireNewNode(FromPin);
}
}
}
FName UK2Node_Variable::GetPaletteIcon(FLinearColor& ColorOut) const
{
FName ReturnIconName;
if(VariableReference.IsLocalScope())
{
ReturnIconName = GetVariableIconAndColor(VariableReference.GetMemberScope(GetBlueprintClassFromNode()), GetVarName(), ColorOut);
}
else
{
ReturnIconName = GetVariableIconAndColor(GetVariableSourceClass(), GetVarName(), ColorOut);
}
return ReturnIconName;
}
bool UK2Node_CallFunctionOnMember::HasExternalDependencies(TArray<class UStruct*>* OptionalOutput) const
{
const UBlueprint* SourceBlueprint = GetBlueprint();
auto VarProperty = MemberVariableToCallOn.ResolveMember<UProperty>(GetBlueprintClassFromNode());
UClass* SourceClass = VarProperty ? VarProperty->GetOwnerClass() : nullptr;
const bool bResult = (SourceClass != NULL) && (SourceClass->ClassGeneratedBy != SourceBlueprint);
if (bResult && OptionalOutput)
{
OptionalOutput->AddUnique(SourceClass);
}
const bool bSuperResult = Super::HasExternalDependencies(OptionalOutput);
return bSuperResult || bResult;
}
bool UK2Node_Variable::CanPasteHere(const UEdGraph* TargetGraph) const
{
// Do not allow pasting of variables in BPs that cannot handle them
if ( FBlueprintEditorUtils::FindBlueprintForGraph(TargetGraph)->BlueprintType == BPTYPE_MacroLibrary && VariableReference.IsSelfContext() )
{
// Self variables must be from a parent class to the macro BP
if(UProperty* Property = VariableReference.ResolveMember<UProperty>(GetBlueprintClassFromNode()))
{
const UClass* CurrentClass = GetBlueprint()->SkeletonGeneratedClass->GetAuthoritativeClass();
const UClass* PropertyClass = Property->GetOwnerClass()->GetAuthoritativeClass();
const bool bIsChildOf = CurrentClass->IsChildOf(PropertyClass);
return bIsChildOf;
}
return false;
}
return true;
}
FText UK2Node_CallParentFunction::GetNodeTitle(ENodeTitleType::Type TitleType) const
{
UFunction* Function = FunctionReference.ResolveMember<UFunction>(GetBlueprintClassFromNode());
FText FunctionName;
if (Function)
{
FunctionName = GetUserFacingFunctionName( Function );
}
else if ( GEditor && GetDefault<UEditorStyleSettings>()->bShowFriendlyNames )
{
FunctionName = FText::FromString(FName::NameToDisplayString(FunctionReference.GetMemberName().ToString(), false));
}
FFormatNamedArguments Args;
Args.Add(TEXT("FunctionName"), FunctionName);
return FText::Format( LOCTEXT( "CallSuperFunction", "Parent: {FunctionName}" ), Args);
}
void UK2Node_CommutativeAssociativeBinaryOperator::AllocateDefaultPins()
{
Super::AllocateDefaultPins();
const UFunction* Function = GetTargetFunction();
if(NULL != Function)
{
check(Function->HasAnyFunctionFlags(FUNC_BlueprintPure));
#if DO_CHECK
ensure(FindOutPin());
ensure((FindSelfPin() ? 4 : 3) == Pins.Num());
{
//VALIDATION
const FEdGraphPinType InputType = GetType();
int32 NativeInputPinsNum = 0;
for (int32 PinIt = 0; PinIt < Pins.Num(); PinIt++)
{
const UEdGraphPin* Pin = Pins[PinIt];
if (Pin != FindSelfPin())
{
ensure(InputType == Pin->PinType);
NativeInputPinsNum += (EEdGraphPinDirection::EGPD_Input == Pin->Direction) ? 1 : 0;
}
}
ensure(BinaryOperatorInputsNum == NativeInputPinsNum);
}
#endif // DO_CHECK
for (int32 i = 0; i < NumAdditionalInputs; ++i)
{
AddInputPinInner(i);
}
}
else
{
const UClass* FunctionParentClass = FunctionReference.GetMemberParentClass(GetBlueprintClassFromNode());
Message_Error(FString::Printf(
*LOCTEXT("NoFunction_Error", "CommutativeAssociativeBinaryOperator has no function: '%s' class: '%s'").ToString(),
*FunctionReference.GetMemberName().ToString(),
(FunctionParentClass ? *FunctionParentClass->GetName() : TEXT("None"))
));
}
}
FText UK2Node_VariableGet::GetNodeTitle(ENodeTitleType::Type TitleType) const
{
// If there is only one variable being read, the title can be made the variable name
FString OutputPinName;
int32 NumOutputsFound = 0;
for (int32 PinIndex = 0; PinIndex < Pins.Num(); ++PinIndex)
{
UEdGraphPin* Pin = Pins[PinIndex];
// The following code is to attempt to log info related to UE-19729
if (TitleType == ENodeTitleType::ListView)
{
if (UEdGraph* Graph = Cast<UEdGraph>(GetOuter()))
{
FString VariableName = GetVarNameString();
FString BlueprintPath = FBlueprintEditorUtils::FindBlueprintForGraph(Graph)->GetPathName();
FString SetupStyle = bIsPureGet? TEXT("pure") : TEXT("validated");
FString VariableResolves = (VariableReference.ResolveMember<UProperty>(GetBlueprintClassFromNode()) != nullptr)? TEXT("resolves") : TEXT("does not resolve");
checkf(Pin, TEXT("Get node for variable '%s' in Blueprint '%s' which is setup as %s and has %d pins. Variable %s"), *VariableName, *BlueprintPath, *SetupStyle, Pins.Num(), *VariableResolves);
}
}
if (Pin->Direction == EGPD_Output)
{
++NumOutputsFound;
OutputPinName = Pin->PinName;
}
}
if (NumOutputsFound != 1)
{
return LOCTEXT("Get", "Get");
}
else if (CachedNodeTitle.IsOutOfDate(this))
{
FFormatNamedArguments Args;
Args.Add(TEXT("PinName"), FText::FromString(OutputPinName));
// FText::Format() is slow, so we cache this to save on performance
CachedNodeTitle.SetCachedText(FText::Format(LOCTEXT("GetPinName", "Get {PinName}"), Args), this);
}
return CachedNodeTitle;
}
FText UK2Node_Variable::GetToolTipHeading() const
{
FText Heading = Super::GetToolTipHeading();
UProperty const* VariableProperty = VariableReference.ResolveMember<UProperty>(GetBlueprintClassFromNode());
if (VariableProperty && VariableProperty->HasAllPropertyFlags(CPF_Net))
{
FText ReplicatedTag = LOCTEXT("ReplicatedVar", "Replicated");
if (Heading.IsEmpty())
{
Heading = ReplicatedTag;
}
else
{
Heading = FText::Format(FText::FromString("{0}\n{1}"), ReplicatedTag, Heading);
}
}
return Heading;
}
FBPVariableDescription const* UK2Node_Variable::GetBlueprintVarDescription() const
{
FName const& VarName = VariableReference.GetMemberName();
UStruct const* VariableScope = VariableReference.GetMemberScope(GetBlueprintClassFromNode());
bool const bIsLocalVariable = (VariableScope != nullptr);
if (bIsLocalVariable)
{
return FBlueprintEditorUtils::FindLocalVariable(GetBlueprint(), VariableScope, VarName);
}
else if (UProperty const* VarProperty = GetPropertyForVariable())
{
UClass const* SourceClass = VarProperty->GetOwnerClass();
UBlueprint const* SourceBlueprint = (SourceClass != nullptr) ? Cast<UBlueprint>(SourceClass->ClassGeneratedBy) : nullptr;
if (SourceBlueprint != nullptr)
{
int32 const VarIndex = FBlueprintEditorUtils::FindNewVariableIndex(SourceBlueprint, VarName);
return &SourceBlueprint->NewVariables[VarIndex];
}
}
return nullptr;
}
UProperty* UK2Node_Variable::GetPropertyForVariable() const
{
const FName VarName = GetVarName();
UEdGraphPin* VariablePin = FindPin(GetVarNameString());
UProperty* VariableProperty = VariableReference.ResolveMember<UProperty>(GetBlueprintClassFromNode());
// if the variable has been deprecated, don't use it
if(VariableProperty != NULL)
{
if (VariableProperty->HasAllPropertyFlags(CPF_Deprecated))
{
VariableProperty = NULL;
}
// If the variable has been remapped update the pin
else if (VariablePin && VarName != GetVarName())
{
VariablePin->PinName = GetVarNameString();
}
}
return VariableProperty;
}
UClass* UK2Node_Variable::GetVariableSourceClass() const
{
UClass* Result = VariableReference.GetMemberParentClass(GetBlueprintClassFromNode());
return Result;
}
void UK2Node_Variable::PostPasteNode()
{
Super::PostPasteNode();
UBlueprint* Blueprint = GetBlueprint();
bool bInvalidateVariable = false;
if (VariableReference.ResolveMember<UProperty>(Blueprint) == nullptr)
{
bInvalidateVariable = true;
}
else if (VariableReference.IsLocalScope())
{
// Local scoped variables should always validate whether they are being placed in the same graph as their scope
// ResolveMember will not return nullptr when the graph changes but the Blueprint remains the same.
UEdGraph* ScopeGraph = FBlueprintEditorUtils::FindScopeGraph(Blueprint, VariableReference.GetMemberScope(GetBlueprintClassFromNode()));
if(ScopeGraph != GetGraph())
{
bInvalidateVariable = true;
}
}
if (bInvalidateVariable)
{
// This invalidates the local scope
VariableReference.InvalidateScope();
// If the current graph is a Function graph, look to see if there is a compatible local variable (same name)
if (GetGraph()->GetSchema()->GetGraphType(GetGraph()) == GT_Function)
{
FBPVariableDescription* VariableDescription = FBlueprintEditorUtils::FindLocalVariable(Blueprint, GetGraph(), VariableReference.GetMemberName());
if(VariableDescription)
{
VariableReference.SetLocalMember(VariableReference.GetMemberName(), GetGraph()->GetName(), VariableReference.GetMemberGuid());
}
}
// If no variable was found, ResolveMember should automatically find a member variable with the same name in the current Blueprint and hook up to it as expected
}
}
UEdGraphPin* UK2Node_CallFunctionOnMember::CreateSelfPin(const UFunction* Function)
{
const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();
UEdGraphPin* SelfPin = NULL;
if (MemberVariableToCallOn.IsSelfContext())
{
// This means the function is defined within the blueprint, so the pin should be a true "self" pin
SelfPin = CreatePin(EGPD_Input, K2Schema->PC_Object, K2Schema->PSC_Self, NULL, false, false, K2Schema->PN_Self);
}
else
{
// This means that the function is declared in an external class, and should reference that class
SelfPin = CreatePin(EGPD_Input, K2Schema->PC_Object, TEXT(""), MemberVariableToCallOn.GetMemberParentClass(GetBlueprintClassFromNode()), false, false, K2Schema->PN_Self);
}
check(SelfPin != NULL);
return SelfPin;
}
