private static void OnFindGroup(GroupTypeWrapper gt)
{
if (gt == null)
{
return;
}
AppCommand.GroupManagerHandler.Arg1 = gt;
AppCommand.GroupManagerHandler.Request.Make(GroupRequestType.FindView);
AppCommand.GroupManagerEvent.Raise();
}
/// <summary>
/// Handles processing of Groups being added or removed. This can be done here instead of a External Command Handler
/// because the only thing that we are updating is the UI so we don't need to be in Revit context.
/// </summary>
/// <param name="msg">Document Changed Message object.</param>
/// <param name="groups">Groups stored on the UI.</param>
public void ProcessDocumentChanged(DocumentChanged msg, ObservableCollection <GroupTypeWrapper> groups)
{
if (msg.Deleted.Any())
{
// (Konrad) Handle GroupType being deleted
groups.RemoveAll(x => msg.Deleted.Contains(x.Id));
// (Konrad) Handle instances of groups being deleted
foreach (var gtw in groups)
{
gtw.Instances.RemoveAll(x => msg.Deleted.Contains(x));
}
}
// (Konrad) Handle new instances of GroupType being added
var addedTypes = msg.Added.Intersect(new FilteredElementCollector(Doc).OfClass(typeof(GroupType)).ToElementIds()).ToList();
if (addedTypes.Any())
{
foreach (var id in addedTypes)
{
if (!(Doc.GetElement(id) is GroupType gt))
{
continue;
}
var gtw = new GroupTypeWrapper(gt);
groups.Add(gtw);
}
}
// (Konrad) Handle new instances of groups being added
var added = msg.Added.Intersect(new FilteredElementCollector(Doc).OfClass(typeof(Group)).ToElementIds()).ToList();
if (!added.Any())
{
return;
}
foreach (var id in added)
{
if (!(Doc.GetElement(id) is Group g))
{
continue;
}
var existing = groups.FirstOrDefault(x => x.Id == g.GroupType.Id);
existing?.Instances.Add(id);
}
}
