bool FSequencerObjectChangeListener::IsTypeKeyable(const UClass& ObjectClass, const IPropertyHandle& PropertyHandle) const
{
const UProperty* Property = PropertyHandle.GetProperty();
const UStructProperty* StructProperty = Cast<const UStructProperty>(Property);
const UStructProperty* ParentStructProperty = nullptr;
const TSharedPtr<IPropertyHandle> ParentHandle = PropertyHandle.GetParentHandle();
if(ParentHandle->IsValidHandle())
{
ParentStructProperty = Cast<const UStructProperty>(ParentHandle->GetProperty());
}
FString PropertyVarName;
bool bFound = false;
if( StructProperty )
{
bFound = FindPropertySetter( ObjectClass, StructProperty->Struct->GetFName(), StructProperty->GetName() );
}
if( !bFound && ParentStructProperty )
{
// If the property parent is a struct, see if this property parent can be keyed. (e.g R,G,B,A for a color)
bFound = FindPropertySetter( ObjectClass, ParentStructProperty->Struct->GetFName(), ParentStructProperty->GetName() );
}
if( !bFound )
{
// the property in question is not a struct or an inner of the struct. See if it is directly keyable
bFound = FindPropertySetter( ObjectClass, Property->GetClass()->GetFName(), Property->GetName() );
}
return bFound;
}
void PropertyHandleToPropertyPath(const UClass* OwnerClass, const IPropertyHandle& InPropertyHandle, TArray<UProperty*>& PropertyPath)
{
PropertyPath.Add(InPropertyHandle.GetProperty());
TSharedPtr<IPropertyHandle> CurrentHandle = InPropertyHandle.GetParentHandle();
while (CurrentHandle.IsValid() && CurrentHandle->GetProperty() != nullptr)
{
PropertyPath.Insert(CurrentHandle->GetProperty(), 0);
CurrentHandle = CurrentHandle->GetParentHandle();
}
}
void FSequencerObjectChangeListener::OnPropertyChanged( const TArray<UObject*>& ChangedObjects, const IPropertyHandle& PropertyHandle, bool bRequireAutoKey ) const
{
bool bIsKeyable = false;
for( UObject* Object : ChangedObjects )
{
if( Object )
{
bIsKeyable |= IsTypeKeyable( *Object->GetClass(), PropertyHandle );
}
}
if( bIsKeyable )
{
const UProperty* Property = PropertyHandle.GetProperty();
const UStructProperty* StructProperty = Cast<const UStructProperty>(Property);
const UStructProperty* ParentStructProperty = nullptr;
TSharedPtr<IPropertyHandle> ParentHandle;
ParentHandle = PropertyHandle.GetParentHandle();
if (ParentHandle->IsValidHandle())
{
ParentStructProperty = Cast<const UStructProperty>(ParentHandle->GetProperty());
}
FString PropertyVarName;
// If not in auto-key allow partial keying of specific inner struct property values;
FName InnerStructPropName = !bRequireAutoKey && ParentStructProperty ? Property->GetFName() : NAME_None;
FKeyPropertyParams Params;
Params.bRequireAutoKey = bRequireAutoKey;
Params.ObjectsThatChanged = ChangedObjects;
bool bFoundAndBroadcastedDelegate = false;
if (ParentStructProperty)
{
Params.PropertyHandle = ParentHandle.Get();
Params.PropertyPath = ParentHandle->GeneratePathToProperty();
// If the property parent is a struct, see if this property parent can be keyed. (e.g R,G,B,A for a color)
FOnAnimatablePropertyChanged Delegate = ClassToPropertyChangedMap.FindRef(ParentStructProperty->Struct->GetFName());
if (Delegate.IsBound())
{
Params.InnerStructPropertyName = InnerStructPropName;
bFoundAndBroadcastedDelegate = true;
Delegate.Broadcast(Params);
}
}
if (!bFoundAndBroadcastedDelegate)
{
if (StructProperty)
{
Params.PropertyHandle = &PropertyHandle;
Params.PropertyPath = PropertyHandle.GeneratePathToProperty();
ClassToPropertyChangedMap.FindRef(StructProperty->Struct->GetFName()).Broadcast(Params);
}
else
{
Params.PropertyHandle = &PropertyHandle;
Params.PropertyPath = PropertyHandle.GeneratePathToProperty();
// the property in question is not a struct or an inner of the struct. See if it is directly keyable
ClassToPropertyChangedMap.FindRef(Property->GetClass()->GetFName()).Broadcast(Params);
}
}
}
}
