/** adds new enumerator (with default unique name) for user defined enum */
void FEnumEditorUtils::AddNewEnumeratorForUserDefinedEnum(UUserDefinedEnum* Enum)
{
if (!Enum)
{
return;
}
PrepareForChange(Enum);
TArray<TPair<FName, int8>> OldNames, Names;
CopyEnumeratorsWithoutMax(Enum, OldNames);
Names = OldNames;
FString EnumNameString = Enum->GenerateNewEnumeratorName();
const FString FullNameStr = Enum->GenerateFullEnumName(*EnumNameString);
Names.Add(TPairInitializer<FName, int8>(FName(*FullNameStr), Enum->GetMaxEnumValue() + 1));
const UEnum::ECppForm EnumType = Enum->GetCppForm();
Enum->SetEnums(Names, EnumType);
EnsureAllDisplayNamesExist(Enum);
BroadcastChanges(Enum, OldNames);
Enum->MarkPackageDirty();
}
/** Reorder enumerators in enum. Swap an enumerator with given name, with previous or next (based on bDirectionUp parameter) */
void FEnumEditorUtils::MoveEnumeratorInUserDefinedEnum(UUserDefinedEnum* Enum, int32 EnumeratorIndex, bool bDirectionUp)
{
if (!(Enum && (Enum->GetNameByIndex(EnumeratorIndex) != NAME_None)))
{
return;
}
PrepareForChange(Enum);
TArray<TPair<FName, int8>> OldNames, Names;
CopyEnumeratorsWithoutMax(Enum, OldNames);
Names = OldNames;
const bool bIsLast = ((Names.Num() - 1) == EnumeratorIndex);
const bool bIsFirst = (0 == EnumeratorIndex);
if (bDirectionUp && !bIsFirst)
{
Names.Swap(EnumeratorIndex, EnumeratorIndex - 1);
}
else if (!bDirectionUp && !bIsLast)
{
Names.Swap(EnumeratorIndex, EnumeratorIndex + 1);
}
const UEnum::ECppForm EnumType = Enum->GetCppForm();
Enum->SetEnums(Names, EnumType);
EnsureAllDisplayNamesExist(Enum);
BroadcastChanges(Enum, OldNames);
Enum->MarkPackageDirty();
}
void FEnumEditorUtils::RemoveEnumeratorFromUserDefinedEnum(UUserDefinedEnum* Enum, int32 EnumeratorIndex)
{
if (!(Enum && (Enum->GetNameByIndex(EnumeratorIndex) != NAME_None)))
{
return;
}
PrepareForChange(Enum);
TArray<TPair<FName, uint8>> OldNames, Names;
CopyEnumeratorsWithoutMax(Enum, OldNames);
Names = OldNames;
Names.RemoveAt(EnumeratorIndex);
Enum->RemoveMetaData(FEnumEditorUtilsHelper::DisplayName(), EnumeratorIndex);
// Clean up enum values.
for (int32 i = 0; i < Names.Num(); ++i)
{
Names[i].Value = i;
}
const UEnum::ECppForm EnumType = Enum->GetCppForm();
Enum->SetEnums(Names, EnumType);
EnsureAllDisplayNamesExist(Enum);
BroadcastChanges(Enum, OldNames);
Enum->MarkPackageDirty();
}
bool FEnumEditorUtils::SetEnumeratorDisplayName(UUserDefinedEnum* Enum, int32 EnumeratorIndex, FString NewDisplayName)
{
if (Enum && (EnumeratorIndex >= 0) && (EnumeratorIndex < Enum->NumEnums()))
{
if (IsEnumeratorDisplayNameValid(Enum, NewDisplayName))
{
PrepareForChange(Enum);
Enum->SetMetaData(FEnumEditorUtilsHelper::DisplayName(), *NewDisplayName, EnumeratorIndex);
EnsureAllDisplayNamesExist(Enum);
BroadcastChanges(Enum, TArray<TPair<FName, int8>>(), false);
return true;
}
}
return false;
}