UEdGraphNode* FEdGraphSchemaAction_K2AssignDelegate::AssignDelegate(class UK2Node* NodeTemplate, class UEdGraph* ParentGraph, UEdGraphPin* FromPin, const FVector2D Location, bool bSelectNewNode)
{
UK2Node_AddDelegate* BindNode = NULL;
if (UK2Node_AddDelegate* AddDelegateTemplate = Cast<UK2Node_AddDelegate>(NodeTemplate))
{
const FScopedTransaction Transaction( NSLOCTEXT("UnrealEd", "K2_AddNode", "Add Node") );
ParentGraph->Modify();
if (FromPin)
{
FromPin->Modify();
}
BindNode = Cast<UK2Node_AddDelegate>(CreateNode(ParentGraph, FromPin, Location, NodeTemplate, bSelectNewNode));
UMulticastDelegateProperty* DelegateProperty = BindNode ? Cast<UMulticastDelegateProperty>(BindNode->GetProperty()) : NULL;
if(DelegateProperty)
{
const FString FunctionName = FString::Printf(TEXT("%s_Event"), *DelegateProperty->GetName());
UK2Node_CustomEvent* EventNode = UK2Node_CustomEvent::CreateFromFunction(
FVector2D(Location.X - 150, Location.Y + 150),
ParentGraph, FunctionName, DelegateProperty->SignatureFunction, bSelectNewNode);
if(EventNode)
{
const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();
UEdGraphPin* OutDelegatePin = EventNode->FindPinChecked(UK2Node_CustomEvent::DelegateOutputName);
UEdGraphPin* InDelegatePin = BindNode->GetDelegatePin();
K2Schema->TryCreateConnection(OutDelegatePin, InDelegatePin);
}
}
UBlueprint* Blueprint = FBlueprintEditorUtils::FindBlueprintForGraphChecked(ParentGraph);
FBlueprintEditorUtils::MarkBlueprintAsStructurallyModified(Blueprint);
}
return BindNode;
}
UMulticastDelegateProperty* UK2Node_ActorBoundEvent::GetTargetDelegateProperty()
{
auto ActualEventSignatureClass = FActorBoundEventHelper::GetSignatureClass(this);
if (!EventSignatureClass && ActualEventSignatureClass)
{
EventSignatureClass = ActualEventSignatureClass;
}
UMulticastDelegateProperty* TargetDelegateProp = Cast<UMulticastDelegateProperty>(FindField<UMulticastDelegateProperty>(EventSignatureClass, DelegatePropertyName));
// If we couldn't find the target delegate, then try to find it in the property remap table
if (!TargetDelegateProp)
{
UMulticastDelegateProperty* NewProperty = Cast<UMulticastDelegateProperty>(FindRemappedField(EventSignatureClass, DelegatePropertyName));
if (NewProperty)
{
// Found a remapped property, update the node
TargetDelegateProp = NewProperty;
DelegatePropertyName = NewProperty->GetFName();
EventSignatureClass = Cast<UClass>(NewProperty->GetOuter());
CachedNodeTitle.MarkDirty();
}
}
return TargetDelegateProp;
}
void UComponentDelegateBinding::BindDynamicDelegates(AActor* InInstance) const
{
for(int32 BindIdx=0; BindIdx<ComponentDelegateBindings.Num(); BindIdx++)
{
const FBlueprintComponentDelegateBinding& Binding = ComponentDelegateBindings[BindIdx];
// Get the function we want to bind
UFunction* FunctionToBind = FindField<UFunction>(InInstance->GetClass(), Binding.FunctionNameToBind);
// Get the property that points to the component we want to assign to
UObjectProperty* ObjProp = FindField<UObjectProperty>(InInstance->GetClass(), Binding.ComponentPropertyName);
// If we have both of those..
if(ObjProp != NULL && FunctionToBind != NULL)
{
// ..see if there is actually a component assigned
UActorComponent* Component = Cast<UActorComponent>(ObjProp->GetObjectPropertyValue_InContainer(InInstance));
if(Component != NULL)
{
// If there is, find the delegate property on it
UMulticastDelegateProperty* DelegateProp = FindField<UMulticastDelegateProperty>(Component->GetClass(), Binding.DelegatePropertyName);
if(DelegateProp)
{
// Found that, finally bind function on the actor to this delegate
FMulticastScriptDelegate* TargetDelegate = DelegateProp->GetPropertyValuePtr_InContainer(Component);
FScriptDelegate Delegate;
Delegate.SetFunctionName(Binding.FunctionNameToBind);
Delegate.SetObject(InInstance);
TargetDelegate->AddUnique(Delegate);
}
}
}
}
}
//------------------------------------------------------------------------------
static void BlueprintActionDatabaseImpl::AddClassPropertyActions(UClass const* const Class, FActionList& ActionListOut)
{
using namespace FBlueprintNodeSpawnerFactory; // for MakeDelegateNodeSpawner()
bool const bIsComponent = Class->IsChildOf<UActorComponent>();
bool const bIsActorClass = Class->IsChildOf<AActor>();
// loop over all the properties in the specified class; exclude-super because
// we can always get the super properties by looking up that class separateHavely
for (TFieldIterator<UProperty> PropertyIt(Class, EFieldIteratorFlags::ExcludeSuper); PropertyIt; ++PropertyIt)
{
UProperty* Property = *PropertyIt;
if (!IsPropertyBlueprintVisible(Property))
{
continue;
}
bool const bIsDelegate = Property->IsA(UMulticastDelegateProperty::StaticClass());
if (bIsDelegate)
{
UMulticastDelegateProperty* DelegateProperty = CastChecked<UMulticastDelegateProperty>(Property);
if (DelegateProperty->HasAnyPropertyFlags(CPF_BlueprintAssignable))
{
UBlueprintNodeSpawner* AddSpawner = UBlueprintDelegateNodeSpawner::Create(UK2Node_AddDelegate::StaticClass(), DelegateProperty);
ActionListOut.Add(AddSpawner);
UBlueprintNodeSpawner* AssignSpawner = MakeAssignDelegateNodeSpawner(DelegateProperty);
ActionListOut.Add(AssignSpawner);
}
if (DelegateProperty->HasAnyPropertyFlags(CPF_BlueprintCallable))
{
UBlueprintNodeSpawner* CallSpawner = UBlueprintDelegateNodeSpawner::Create(UK2Node_CallDelegate::StaticClass(), DelegateProperty);
ActionListOut.Add(CallSpawner);
}
UBlueprintNodeSpawner* RemoveSpawner = UBlueprintDelegateNodeSpawner::Create(UK2Node_RemoveDelegate::StaticClass(), DelegateProperty);
ActionListOut.Add(RemoveSpawner);
UBlueprintNodeSpawner* ClearSpawner = UBlueprintDelegateNodeSpawner::Create(UK2Node_ClearDelegate::StaticClass(), DelegateProperty);
ActionListOut.Add(ClearSpawner);
if (bIsComponent)
{
ActionListOut.Add(MakeComponentBoundEventSpawner(DelegateProperty));
}
else if (bIsActorClass)
{
ActionListOut.Add(MakeActorBoundEventSpawner(DelegateProperty));
}
}
else
{
UBlueprintVariableNodeSpawner* GetterSpawner = UBlueprintVariableNodeSpawner::Create(UK2Node_VariableGet::StaticClass(), Property);
ActionListOut.Add(GetterSpawner);
UBlueprintVariableNodeSpawner* SetterSpawner = UBlueprintVariableNodeSpawner::Create(UK2Node_VariableSet::StaticClass(), Property);
ActionListOut.Add(SetterSpawner);
}
}
}
static UMulticastDelegateProperty* FindAndCheckDelegateProperty(FKismetFunctionContext& Context, UK2Node_BaseMCDelegate * DelegateNode, FCompilerResultsLog& MessageLog, const UEdGraphSchema_K2* Schema)
{
check(NULL != DelegateNode);
UEdGraphPin* Pin = Schema->FindSelfPin(*DelegateNode, EEdGraphPinDirection::EGPD_Input);
UStruct* DelegateScope = Pin ? Context.GetScopeFromPinType(Pin->PinType, Context.NewClass) : NULL;
// Early out if we have no pin. That means the delegate is no longer valid, and we need to terminate gracefully
if (!Pin || !DelegateScope)
{
MessageLog.Error(*LOCTEXT("NoDelegateProperty", "Event Dispatcher has no property @@").ToString(), DelegateNode);
return NULL;
}
// Don't use DelegateNode->GetProperty(), because we don't want any property from skeletal class
UClass* PropertyOwnerClass = CastChecked<UClass>(DelegateScope);
UMulticastDelegateProperty* BoundProperty = NULL;
for (TFieldIterator<UMulticastDelegateProperty> It(PropertyOwnerClass); It; ++It)
{
UMulticastDelegateProperty* Prop = *It;
if (DelegateNode->GetPropertyName() == Prop->GetFName())
{
BoundProperty = Prop;
break;
}
}
if (!BoundProperty)
{
FString const OwnerName = PropertyOwnerClass->GetName();
FString const PropName = DelegateNode->GetPropertyName().ToString();
FText const ErrorFormat = LOCTEXT("DelegateNotFound", "Could not find an event-dispatcher named \"%s\" in '%s'.\nMake sure '%s' has been compiled for @@");
MessageLog.Error(*FString::Printf(*ErrorFormat.ToString(), *PropName, *OwnerName, *OwnerName), DelegateNode);
return NULL;
}
{
// MulticastDelegateProperty from NewClass may have empty signature, but property from skeletal class should have it.
const UFunction* OrgSignature = DelegateNode->GetDelegateSignature();
if(const UEdGraphPin* DelegatePin = DelegateNode->GetDelegatePin())
{
const UFunction* PinSignature = FMemberReference::ResolveSimpleMemberReference<UFunction>(DelegatePin->PinType.PinSubCategoryMemberReference);
if (!OrgSignature || !PinSignature || !OrgSignature->IsSignatureCompatibleWith(PinSignature))
{
MessageLog.Error(*LOCTEXT("WrongDelegate", "Wrong Event Dispatcher. Refresh node @@").ToString(), DelegateNode);
return NULL;
}
}
CheckOutputsParametersInDelegateSignature(OrgSignature, DelegateNode, MessageLog);
}
return BoundProperty;
}
FText UK2Node_ActorBoundEvent::GetTooltipText() const
{
UMulticastDelegateProperty* TargetDelegateProp = GetTargetDelegatePropertyConst();
if(TargetDelegateProp)
{
return TargetDelegateProp->GetToolTipText();
}
else
{
return FText::FromName(DelegatePropertyName);
}
}
FMulticastScriptDelegate* UK2Node_ActorBoundEvent::GetTargetDelegate()
{
if( EventOwner )
{
UMulticastDelegateProperty* TargetDelegateProp = GetTargetDelegateProperty();
if( TargetDelegateProp )
{
return TargetDelegateProp->GetPropertyValuePtr_InContainer(EventOwner);
}
}
return NULL;
}
UFunction* UK2Node_DelegateSet::GetDelegateSignature()
{
UMulticastDelegateProperty* DelegateProperty = FindField<UMulticastDelegateProperty>(DelegatePropertyClass, DelegatePropertyName);
if( !DelegateProperty )
{
// Attempt to find a remapped delegate property
UMulticastDelegateProperty* NewProperty = Cast<UMulticastDelegateProperty>(FMemberReference::FindRemappedField(DelegatePropertyClass, DelegatePropertyName));
if( NewProperty )
{
// Found a remapped property, update the node
DelegateProperty = NewProperty;
DelegatePropertyName = NewProperty->GetFName();
DelegatePropertyClass = Cast<UClass>(NewProperty->GetOuter());
}
}
return (DelegateProperty != NULL) ? DelegateProperty->SignatureFunction : NULL;
}