private void CallAutoBalance()
{
if (selectedNodes.Count != 0)
{
if (selectedNodes.ElementAt(0) is BSTViewModel)
{
Tree treeTest = new Tree(selectedNodes,Lines);
if (treeTest.hasIntKeysAndBSTNodes())
{
undoRedo.InsertInUndoRedo(new AutoBalanceCommand(treeTest, Nodes, selectedNodes, Lines));
}
}
else if (selectedNodes.ElementAt(0) is T234ViewModel)
{
if (validT234Tree())
{
undoRedo.InsertInUndoRedo(new AutoBalance234(Nodes, selectedNodes, Lines));
}
}else
System.Windows.MessageBox.Show("Tree contains red/black nodes.");
}
}
