private void RefencedModels_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Add && e.NewItems.Count > 0)
{
var refModel = e.NewItems[0] as XbimReferencedModel;
var vm = HierarchySource.Cast <XbimModelViewModel>().FirstOrDefault();
vm?.AddRefModel(new XbimRefModelViewModel(refModel, null));
}
else if (e.Action == NotifyCollectionChangedAction.Remove)
{
foreach (XbimReferencedModel refModel in e.OldItems)
{
XbimModelViewModel vm = HierarchySource.Cast <XbimModelViewModel>().FirstOrDefault();
if (vm != null)
{
var modelVm = vm.Children.FirstOrDefault(m =>
{
var xbimRefModelViewModel = m as XbimRefModelViewModel;
return(xbimRefModelViewModel != null && xbimRefModelViewModel.RefModel == refModel);
}) as XbimRefModelViewModel;
vm.RemoveRefModel(modelVm);
}
}
}
}
public IXbimViewModel FindItemBreadthFirst(IPersistEntity entity)
{
Queue <IXbimViewModel> queue = new Queue <IXbimViewModel>();
foreach (var item in HierarchySource.OfType <IXbimViewModel>())
{
queue.Enqueue(item);
}
IXbimViewModel current = queue.Dequeue();
while (current != null)
{
if (IsMatch(current, entity))
{
return(current);
}
foreach (var item in current.Children)
{
queue.Enqueue(item);
}
if (!queue.Any())
{
return(null);
}
current = queue.Dequeue();
}
return(null);
}
// todo: bonghi: this one is too slow on Architettonico_def.xBIM, so I'm patching it for a specific hierarchy, but it needs serious redesign for efficiency
private void Select(IPersistEntity newVal, bool tryOptimise = true)
{
if (ViewDefinition == XbimViewType.SpatialStructure && tryOptimise)
{
/*
* We know that the structure in this case looks like:
*
* XbimModelViewModel
* model.project.GetSpatialStructuralElements (into SpatialViewModel)
* model.RefencedModels (into XbimRefModelViewModel)
* model.project.GetSpatialStructuralElements (into SpatialViewModel)
*
* SpatialViewModel
* SpatialViewModel
* ContainedElementsViewModel
* IfcProductModelView
* IfcProductModelView
*
* If a model is a product then find its space with breadth first then expand to it with depth first.
* todo: bonghi: this is still not optimal, because it can only point to simple IPersistEntity and not intermediate IXbimViewModels.
*
*/
var p = newVal as IIfcProduct;
if (p != null)
{
var found = FindUnderContainingSpace(newVal, p); // direct search
if (found == null)
{
// search for composed object
var decomp = p.Decomposes.FirstOrDefault();
if (decomp?.RelatingObject is IIfcProduct) //
{
found = FindUnderContainingSpace(newVal, (IIfcProduct)(decomp.RelatingObject)); // direct search of parent through containing space
if (found != null)
{
found = FindItemDepthFirst(found, newVal); // then search for the child
}
}
else
{
// do basic search
Select(newVal, false);
}
}
if (found != null)
{
Highlight(found);
return;
}
}
// if optimised search fails revert to brute force expansion
Select(newVal, false);
}
else
{
foreach (var item in HierarchySource.OfType <IXbimViewModel>())
{
IXbimViewModel toSelect = FindItemDepthFirst(item, newVal);
if (toSelect != null)
{
Highlight(toSelect);
return;
}
}
}
}
