bool IGH_PersistentElementComponent.NeedsToBeExpired(Autodesk.Revit.DB.Events.DocumentChangedEventArgs e)
{
var filter = new Autodesk.Revit.DB.ElementIsElementTypeFilter(true);
var added = e.GetAddedElementIds(filter);
if (added.Count > 0)
{
return(true);
}
var modified = e.GetModifiedElementIds(filter);
if (modified.Count > 0)
{
return(true);
}
var deleted = e.GetDeletedElementIds();
if (deleted.Count > 0)
{
var document = e.GetDocument();
var empty = new ElementId[0];
foreach (var param in Params.Output.OfType <Parameters.IGH_PersistentElementParam>())
{
if (param.NeedsToBeExpired(document, empty, deleted, empty))
{
return(true);
}
}
}
return(false);
}
static void ClassifyElementIds(IGrouping <DB.Document, Types.IGH_Element> group, out HashSet <DB.ElementId> elements, out HashSet <DB.ElementId> types)
{
elements = new HashSet <DB.ElementId>();
types = new HashSet <DB.ElementId>();
using (var typesFilter = new DB.ElementIsElementTypeFilter())
{
foreach (var item in group)
{
var id = item.Id;
if (typesFilter.PassesFilter(group.Key, id))
{
types.Add(id);
}
else
{
elements.Add(id);
}
}
}
}
