Exemplo n.º 1
0
void FWebJSScripting::InvokeJSFunction(FGuid FunctionId, int32 ArgCount, FWebJSParam Arguments[], bool bIsError)
{
	CefRefPtr<CefListValue> FunctionArguments = CefListValue::Create();
	for ( int32 i=0; i<ArgCount; i++)
	{
		SetConverted(FunctionArguments, i, Arguments[i]);
	}
	InvokeJSFunction(FunctionId, FunctionArguments, bIsError);
}
Exemplo n.º 2
0
void FWebJSScripting::InvokeJSErrorResult(FGuid FunctionId, const FString& Error)
{
	FWebJSParam Arguments[1] = {FWebJSParam(Error)};
	InvokeJSFunction(FunctionId, 1, Arguments, true);
}
Exemplo n.º 3
0
bool FWebJSScripting::HandleExecuteUObjectMethodMessage(CefRefPtr<CefListValue> MessageArguments)
{
	FGuid ObjectKey;
	// Message arguments are Name, Value, bGlobal
	if (MessageArguments->GetSize() != 4
		|| MessageArguments->GetType(0) != VTYPE_STRING
		|| MessageArguments->GetType(1) != VTYPE_STRING
		|| MessageArguments->GetType(2) != VTYPE_STRING
		|| MessageArguments->GetType(3) != VTYPE_LIST
		)
	{
		// Wrong message argument types or count
		return false;
	}

	if (!FGuid::Parse(FString(MessageArguments->GetString(0).ToWString().c_str()), ObjectKey))
	{
		// Invalid GUID
		return false;
	}

	// Get the promise callback and use that to report any results from executing this function.
	FGuid ResultCallbackId;
	if (!FGuid::Parse(FString(MessageArguments->GetString(2).ToWString().c_str()), ResultCallbackId))
	{
		// Invalid GUID
		return false;
	}

	UObject* Object = GuidToPtr(ObjectKey);
	if (Object == nullptr)
	{
		// Unknown uobject id
		InvokeJSErrorResult(ResultCallbackId, TEXT("Unknown UObject ID"));
		return true;
	}

	FName MethodName = MessageArguments->GetString(1).ToWString().c_str();
	UFunction* Function = Object->FindFunction(MethodName);
	if (!Function)
	{
		InvokeJSErrorResult(ResultCallbackId, TEXT("Unknown UObject Function"));
		return true;
	}
	// Coerce arguments to function arguments.
	uint16 ParamsSize = Function->ParmsSize;
	TArray<uint8> Params;
	UProperty* ReturnParam = nullptr;

	// Convert cef argument list to a dictionary, so we can use FStructDeserializer to convert it for us
	CefRefPtr<CefDictionaryValue> NamedArgs = CefDictionaryValue::Create();
	{
		int32 CurrentArg = 0;
		CefRefPtr<CefListValue> CefArgs = MessageArguments->GetList(3);
		for ( TFieldIterator<UProperty> It(Function); It; ++It )
		{
			UProperty* Param = *It;
			if (Param->PropertyFlags & CPF_Parm)
			{
				if (Param->PropertyFlags & CPF_ReturnParm)
				{
					ReturnParam = Param;
				}
				else
				{
					CopyContainerValue(NamedArgs, CefArgs, CefString(*Param->GetName()), CurrentArg);
					CurrentArg++;
				}
			}
		}

		if (ParamsSize > 0)
		{
			// UFunction is a subclass of UStruct, so we can treat the arguments as a struct for deserialization
			UStruct* TypeInfo = Cast<UStruct>(Function);

			Params.AddUninitialized(ParamsSize);
			TypeInfo->InitializeStruct(Params.GetData());
			FWebJSStructDeserializerBackend Backend = FWebJSStructDeserializerBackend(SharedThis(this), NamedArgs);
			FStructDeserializer::Deserialize(Params.GetData(), *TypeInfo, Backend);
		}
	}

	Object->ProcessEvent(Function, Params.GetData());
	if ( ReturnParam )
	{
		FWebJSParam Results[1] = {ConvertResult(ReturnParam, Params.GetData())};
		InvokeJSFunction(ResultCallbackId, 1, Results, false);
	}
	else
	{
		InvokeJSFunction(ResultCallbackId, 0, nullptr, false);
	}
	return true;
}
Exemplo n.º 4
0
void FWebJSScripting::InvokeJSErrorResult(FGuid FunctionId, const FString& Error)
{
	CefRefPtr<CefListValue> FunctionArguments = CefListValue::Create();
	FunctionArguments->SetString(0, *Error);
	InvokeJSFunction(FunctionId, FunctionArguments, true);
}
Exemplo n.º 5
0
bool FWebJSScripting::HandleExecuteUObjectMethodMessage(CefRefPtr<CefListValue> MessageArguments)
{
	FGuid ObjectKey;
	// Message arguments are Name, Value, bGlobal
	if (MessageArguments->GetSize() != 4
		|| MessageArguments->GetType(0) != VTYPE_STRING
		|| MessageArguments->GetType(1) != VTYPE_STRING
		|| MessageArguments->GetType(2) != VTYPE_STRING
		|| MessageArguments->GetType(3) != VTYPE_LIST
		)
	{
		// Wrong message argument types or count
		return false;
	}

	if (!FGuid::Parse(FString(MessageArguments->GetString(0).ToWString().c_str()), ObjectKey))
	{
		// Invalid GUID
		return false;
	}

	// Get the promise callback and use that to report any results from executing this function.
	FGuid ResultCallbackId;
	if (!FGuid::Parse(FString(MessageArguments->GetString(2).ToWString().c_str()), ResultCallbackId))
	{
		// Invalid GUID
		return false;
	}

	UObject* Object = GuidToPtr(ObjectKey);
	if (Object == nullptr)
	{
		// Unknown uobject id
		InvokeJSErrorResult(ResultCallbackId, TEXT("Unknown UObject ID"));
		return true;
	}

	FName MethodName = MessageArguments->GetString(1).ToWString().c_str();
	UFunction* Function = Object->FindFunction(MethodName);
	if (!Function)
	{
		InvokeJSErrorResult(ResultCallbackId, TEXT("Unknown UObject Function"));
		return true;
	}
	// Coerce arguments to function arguments.
	uint16 ParamsSize = Function->ParmsSize;
	TArray<uint8> Params;
	UProperty* ReturnParam = nullptr;
	UProperty* PromiseParam = nullptr;

	// Convert cef argument list to a dictionary, so we can use FStructDeserializer to convert it for us
	if (ParamsSize > 0)
	{
		CefRefPtr<CefDictionaryValue> NamedArgs = CefDictionaryValue::Create();
		int32 CurrentArg = 0;
		CefRefPtr<CefListValue> CefArgs = MessageArguments->GetList(3);
		for ( TFieldIterator<UProperty> It(Function); It; ++It )
		{
			UProperty* Param = *It;
			if (Param->PropertyFlags & CPF_Parm)
			{
				if (Param->PropertyFlags & CPF_ReturnParm)
				{
					ReturnParam = Param;
				}
				else
				{
					UStructProperty *StructProperty = Cast<UStructProperty>(Param);
					if (StructProperty && StructProperty->Struct->IsChildOf(FWebJSResponse::StaticStruct()))
					{
						PromiseParam = Param;
					}
					else
					{
						CopyContainerValue(NamedArgs, CefArgs, CefString(*Param->GetName()), CurrentArg);
						CurrentArg++;
					}
				}
			}
		}

		// UFunction is a subclass of UStruct, so we can treat the arguments as a struct for deserialization
		Params.AddUninitialized(ParamsSize);
		Function->InitializeStruct(Params.GetData());
		FWebJSStructDeserializerBackend Backend = FWebJSStructDeserializerBackend(SharedThis(this), NamedArgs);
		FStructDeserializer::Deserialize(Params.GetData(), *Function, Backend);
	}

	if (PromiseParam)
	{
		FWebJSResponse* PromisePtr = PromiseParam->ContainerPtrToValuePtr<FWebJSResponse>(Params.GetData());
		if (PromisePtr)
		{
			*PromisePtr = FWebJSResponse(SharedThis(this), ResultCallbackId);
		}
	}

	Object->ProcessEvent(Function, Params.GetData());
	CefRefPtr<CefListValue> Results = CefListValue::Create();

	if ( ! PromiseParam ) // If PromiseParam is set, we assume that the UFunction will ensure it is called with the result
	{
		if ( ReturnParam )
		{
			FStructSerializerPolicies ReturnPolicies;
			ReturnPolicies.PropertyFilter = [&](const UProperty* CandidateProperty, const UProperty* ParentProperty)
			{
				return ParentProperty != nullptr || CandidateProperty == ReturnParam;
			};
			FWebJSStructSerializerBackend ReturnBackend(SharedThis(this));
			FStructSerializer::Serialize(Params.GetData(), *Function, ReturnBackend, ReturnPolicies);
			CefRefPtr<CefDictionaryValue> ResultDict = ReturnBackend.GetResult();

			// Extract the single return value from the serialized dictionary to an array
			CopyContainerValue(Results, ResultDict, 0, CefString(*ReturnParam->GetName()));
		}
		InvokeJSFunction(ResultCallbackId, Results, false);
	}
	return true;
}