void FDetailLayoutBuilderImpl::GetObjectsBeingCustomized( TArray< TWeakObjectPtr<UObject> >& OutObjects ) const
{
OutObjects.Empty();
// The class to find properties in defaults to the class currently being customized
FName ClassName = CurrentCustomizationClass ? CurrentCustomizationClass->GetFName() : NAME_None;
if( ClassName != NAME_None && CurrentCustomizationVariableName != NAME_None )
{
// If this fails there are no properties associated with the class name provided
FClassInstanceToPropertyMap* ClassInstanceToPropertyMapPtr = PropertyMap.Find( ClassName );
if( ClassInstanceToPropertyMapPtr )
{
FClassInstanceToPropertyMap& ClassInstanceToPropertyMap = *ClassInstanceToPropertyMapPtr;
FPropertyNodeMap* PropertyNodeMapPtr = ClassInstanceToPropertyMap.Find( CurrentCustomizationVariableName );
if( PropertyNodeMapPtr )
{
FPropertyNodeMap& PropertyNodeMap = *PropertyNodeMapPtr;
FObjectPropertyNode* ParentObjectProperty = PropertyNodeMap.ParentProperty ? PropertyNodeMap.ParentProperty->AsObjectNode() : NULL;
if (ParentObjectProperty)
{
for (int32 ObjectIndex = 0; ObjectIndex < ParentObjectProperty->GetNumObjects(); ++ObjectIndex)
{
OutObjects.Add(ParentObjectProperty->GetUObject(ObjectIndex));
}
}
}
}
}
else
{
OutObjects = DetailsView.GetSelectedObjects();
}
}
bool SDetailsView::ShouldSetNewObjects(const TArray< TWeakObjectPtr< UObject > >& InObjects) const
{
bool bShouldSetObjects = false;
const bool bHadBSPBrushSelected = SelectedActorInfo.bHaveBSPBrush;
if( bHadBSPBrushSelected == true )
{
// If a BSP brush was selected we need to refresh because surface could have been selected and the object set not updated
bShouldSetObjects = true;
}
else if( InObjects.Num() != GetNumObjects() )
{
// If the object arrays differ in size then at least one object is different so we must reset
bShouldSetObjects = true;
}
else if(InObjects.Num() == 0)
{
// User is likely resetting details panel
bShouldSetObjects = true;
}
else
{
// Check to see if the objects passed in are different. If not we do not need to set anything
TSet< TWeakObjectPtr< UObject > > NewObjects;
NewObjects.Append(InObjects);
if(DetailsViewArgs.bAllowMultipleTopLevelObjects)
{
// For multiple top level node support, if the single object in each node is not found in the new object set
// then we need to refresh
for(int32 RootNodeIndex = 0; RootNodeIndex < RootPropertyNodes.Num(); ++RootNodeIndex)
{
FObjectPropertyNode* RootPropertyNode = RootPropertyNodes[RootNodeIndex]->AsObjectNode();
if(RootPropertyNode && RootPropertyNode->GetNumObjects() > 0)
{
if(!NewObjects.Contains(RootPropertyNode->GetUObject(0)))
{
bShouldSetObjects = true;
break;
}
}
else
{
bShouldSetObjects = true;
break;
}
}
}
else
{
ensure(RootPropertyNodes.Num() == 1);
FObjectPropertyNode* RootPropertyNode = RootPropertyNodes[0]->AsObjectNode();
if( RootPropertyNode )
{
for(TPropObjectIterator Itor(RootPropertyNode->ObjectIterator()); Itor; ++Itor)
{
TWeakObjectPtr<UObject> Object = *Itor;
if(Object.IsValid() && !NewObjects.Contains(Object))
{
// An existing object is not in the list of new objects to set
bShouldSetObjects = true;
break;
}
else if(!Object.IsValid())
{
// An existing object is invalid
bShouldSetObjects = true;
break;
}
}
}
else
{
bShouldSetObjects = true;
}
}
}
if (!bShouldSetObjects && AssetSelectionUtils::IsAnySurfaceSelected(nullptr))
{
bShouldSetObjects = true;
}
return bShouldSetObjects;
}