//-----------------------------------------------------------------------
public void SetRootItem(DataItem item)
{
RootItems.Clear();
RootItems.Add(item);
m_storedRootItems.Add(item);
GraphNodeItems.Clear();
foreach (var i in Descendants)
{
i.DataModel = this;
if (item is GraphNodeItem && !GraphNodeItems.Contains(item))
{
if (!GraphNodeItems.Contains(item as GraphNodeItem))
{
GraphNodeItems.Add(item as GraphNodeItem);
}
}
}
if (RootItems.Any(e => !(e is GraphNodeItem)))
{
ShowAsGraph = false;
ShowAsDataModel = true;
}
else
{
ShowAsGraph = true;
ShowAsDataModel = false;
}
RaisePropertyChangedEvent("ShowAsGraph");
RaisePropertyChangedEvent("ShowAsDataModel");
}