More work on props

Plugins/UEWingman/Source/UEWingman/Private/WingPropHandle.cpp

@@ -1,6 +1,8 @@
 #include "WingPropHandle.h"
 #include "WingServer.h"
 #include "WingActorComponent.h"
+#include "WingUtils.h"
+#include "WingTypes.h"
 #include "PropertyEditorModule.h"
 #include "IDetailTreeNode.h"
 #include "Engine/Blueprint.h"
@@ -8,6 +10,8 @@
 #include "Components/PanelSlot.h"
 #include "MaterialGraph/MaterialGraphNode.h"
 #include "Materials/MaterialExpression.h"
+#include "UObject/EnumProperty.h"
+#include "EdGraph/EdGraphPin.h"
 
 /////////////////////////////////////////////////////////////////////////////
 //
@@ -241,3 +245,84 @@ WingPropHandle::Handles WingPropHandle::GetDetails(UObject* Obj, bool Mutable, E
 
 	return Result;
 }
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// GetText / SetText
+//
+/////////////////////////////////////////////////////////////////////////////
+
+bool WingPropHandle::IsPinTypeProperty(FProperty* Prop)
+{
+	FStructProperty* StructProp = CastField<FStructProperty>(Prop);
+	return StructProp && StructProp->Struct == FEdGraphPinType::StaticStruct();
+}
+
+FString WingPropHandle::GetText(IPropertyHandle& Handle)
+{
+	// Pin types: use our human-readable format.
+	if (IsPinTypeProperty(Handle.GetProperty()))
+	{
+		void* Data = nullptr;
+		if (Handle.GetValueData(Data) != FPropertyAccess::Success || !Data)
+			UE_LOG(LogTemp, Fatal, TEXT("GetValueData failed for pin type property '%s'"),
+				*Handle.GetProperty()->GetName());
+		return UWingTypes::TypeToText(*static_cast<FEdGraphPinType*>(Data));
+	}
+
+	FString Result;
+	if (Handle.GetValueAsFormattedString(Result) != FPropertyAccess::Success)
+		UE_LOG(LogTemp, Fatal, TEXT("GetValueAsFormattedString failed for property '%s'"),
+			*Handle.GetProperty()->GetName());
+	return Result;
+}
+
+bool WingPropHandle::SetText(IPropertyHandle& Handle, const FString& Text)
+{
+	FProperty* Prop = Handle.GetProperty();
+
+	// Pin types: parse with our type parser.
+	if (IsPinTypeProperty(Prop))
+	{
+		FEdGraphPinType PinType;
+		UWingTypes::Requirements Req;
+		Req.BlueprintType = true;
+		Req.Blueprintable = false;
+		Req.AllowContainer = true;
+		if (!UWingTypes::TextToType(Text, PinType, Req)) return false;
+		void* Data = nullptr;
+		if (Handle.GetValueData(Data) != FPropertyAccess::Success || !Data)
+		{
+			UWingServer::Printf(TEXT("ERROR: Cannot access data for property '%s'\n"),
+				*WingUtils::FormatName(Prop));
+			return false;
+		}
+		Handle.NotifyPreChange();
+		*static_cast<FEdGraphPinType*>(Data) = PinType;
+		Handle.NotifyPostChange(EPropertyChangeType::ValueSet);
+		return true;
+	}
+
+	// Enums: canonicalize the string with our smarter prefix matching.
+	FString Value = Text;
+	UEnum* Enum = nullptr;
+	if (FByteProperty* ByteProp = CastField<FByteProperty>(Prop))
+		Enum = ByteProp->Enum;
+	if (FEnumProperty* EnumProp = CastField<FEnumProperty>(Prop))
+		Enum = EnumProp->GetEnum();
+	if (Enum != nullptr)
+	{
+		int64 EnumValue;
+		if (!WingUtils::StringToEnum(Enum, Value, EnumValue)) return false;
+		Value = Enum->GetNameStringByValue(EnumValue);
+	}
+
+	FPropertyAccess::Result Result = Handle.SetValueFromFormattedString(Value);
+	if (Result != FPropertyAccess::Success)
+	{
+		UWingServer::Printf(TEXT("ERROR: Failed to parse '%s' for property '%s' (type: %s)\n"),
+			*Value, *WingUtils::FormatName(Prop), *Prop->GetCPPType());
+		return false;
+	}
+	return true;
+}