bool FStructureEditorUtils::AddVariable(UBlueprint* Blueprint, FName StructName, const FEdGraphPinType& VarType)
{
if (NULL != Blueprint)
{
const FScopedTransaction Transaction( LOCTEXT("AddVariable", "Add Variable") );
Blueprint->Modify();
FBPStructureDescription* StructureDesc = Blueprint->UserDefinedStructures.FindByPredicate(FFindByNameHelper(StructName));
if (StructureDesc)
{
FString ErrorMessage;
if (!CanHaveAMemberVariableOfType(StructureDesc->CompiledStruct, VarType, &ErrorMessage))
{
UE_LOG(LogBlueprint, Warning, TEXT("%s"), *ErrorMessage);
return false;
}
const FName VarName = FMemberVariableNameHelper::Generate(StructureDesc->CompiledStruct, FString());
check(NULL == StructureDesc->Fields.FindByPredicate(FFindByNameHelper(VarName)));
const FString DisplayName = VarName.ToString();
check(IsUniqueVariableDisplayName(Blueprint, StructName, DisplayName));
FBPVariableDescription NewVar;
NewVar.VarName = VarName;
NewVar.FriendlyName = DisplayName;
NewVar.VarType = VarType;
NewVar.VarGuid = FGuid::NewGuid();
StructureDesc->Fields.Add(NewVar);
OnStructureChanged(*StructureDesc, Blueprint);
return true;
}
}
return false;
}
bool FStructureEditorUtils::RenameVariable(UUserDefinedStruct* Struct, FGuid VarGuid, const FString& NewDisplayNameStr)
{
if (Struct)
{
auto VarDesc = GetVarDescByGuid(Struct, VarGuid);
if (VarDesc
&& !NewDisplayNameStr.IsEmpty()
&& FName(*NewDisplayNameStr).IsValidXName(INVALID_OBJECTNAME_CHARACTERS)
&& IsUniqueVariableDisplayName(Struct, NewDisplayNameStr))
{
const FScopedTransaction Transaction(LOCTEXT("RenameVariable", "Rename Variable"));
ModifyStructData(Struct);
VarDesc->FriendlyName = NewDisplayNameStr;
//>>> TEMPORARY it's more important to prevent changes in structs instances, than to have consistent names
if (GetGuidFromPropertyName(VarDesc->VarName).IsValid())
//<<< TEMPORARY
{
const FName NewName = FMemberVariableNameHelper::Generate(Struct, NewDisplayNameStr, VarGuid);
check(NULL == GetVarDesc(Struct).FindByPredicate(FFindByNameHelper<FStructVariableDescription>(NewName)))
VarDesc->VarName = NewName;
}
OnStructureChanged(Struct);
return true;
}
}
return false;
}
bool FStructureEditorUtils::AddVariable(UUserDefinedStruct* Struct, const FEdGraphPinType& VarType)
{
if (Struct)
{
const FScopedTransaction Transaction( LOCTEXT("AddVariable", "Add Variable") );
ModifyStructData(Struct);
FString ErrorMessage;
if (!CanHaveAMemberVariableOfType(Struct, VarType, &ErrorMessage))
{
UE_LOG(LogBlueprint, Warning, TEXT("%s"), *ErrorMessage);
return false;
}
const FGuid Guid = FGuid::NewGuid();
FString DisplayName;
const FName VarName = FMemberVariableNameHelper::Generate(Struct, FString(), Guid, &DisplayName);
check(NULL == GetVarDesc(Struct).FindByPredicate(FStructureEditorUtils::FFindByNameHelper<FStructVariableDescription>(VarName)));
check(IsUniqueVariableDisplayName(Struct, DisplayName));
FStructVariableDescription NewVar;
NewVar.VarName = VarName;
NewVar.FriendlyName = DisplayName;
NewVar.SetPinType(VarType);
NewVar.VarGuid = Guid;
NewVar.bDontEditoOnInstance = false;
NewVar.bInvalidMember = false;
GetVarDesc(Struct).Add(NewVar);
OnStructureChanged(Struct);
return true;
}
return false;
}
bool FStructureEditorUtils::RenameVariable(UBlueprint* Blueprint, FName StructName, FGuid VarGuid, const FString& NewDisplayNameStr)
{
if (NULL != Blueprint)
{
const FScopedTransaction Transaction( LOCTEXT("RenameVariable", "Rename Variable") );
Blueprint->Modify();
FBPStructureDescription* StructureDesc = Blueprint->UserDefinedStructures.FindByPredicate(FFindByNameHelper(StructName));
if (StructureDesc)
{
const FName NewNameBase(*NewDisplayNameStr);
if (NewNameBase.IsValidXName(INVALID_OBJECTNAME_CHARACTERS) &&
IsUniqueVariableDisplayName(Blueprint, StructName, NewDisplayNameStr))
{
const FName NewName = FMemberVariableNameHelper::Generate(StructureDesc->CompiledStruct, NewDisplayNameStr);
if (NULL == StructureDesc->Fields.FindByPredicate(FFindByNameHelper(NewName)))
{
FBPVariableDescription* VarDesc = StructureDesc->Fields.FindByPredicate(FFindByGuidHelper(VarGuid));
if (VarDesc)
{
VarDesc->FriendlyName = NewDisplayNameStr;
VarDesc->VarName = NewName;
OnStructureChanged(*StructureDesc, Blueprint);
return true;
}
}
}
}
}
return false;
}
