protected override void InsertItem(int index, Node item)
{
if (item == null)
{
throw new ArgumentNullException();
}
if (item.parent != owner)
{
if (item.parent != null)
{
item.parent.nodes.Remove(item);
}
item.parent = owner;
base.InsertItem(index, item);
TreeModel model = owner.RootTreeModel();
if (model != null)
{
model.OnStructureChanged(owner);
}
if (owner.NodeAdded != null)
{
owner.NodeAdded(item);
}
}
}
protected override void RemoveItem(int index)
{
Node item = this[index];
item.parent = null;
base.RemoveItem(index);
TreeModel model = owner.RootTreeModel();
if (model != null)
{
model.OnStructureChanged(owner);
}
if (owner.NodeRemoved != null)
{
owner.NodeRemoved(item);
}
}
