private void ChangePage(ObservableCollection<CanvasControlBase> graph)
{
if (_currentPageIndex == 0)
{
_currentPageIndex = 1;
_algorithm = _secondPageAlgorithm;
if (this.ComboBoxItems != null)
{
_firstPageNodesList.Clear();
foreach (ComboboxElement elem in this.ComboBoxItems)
{
_firstPageNodesList.Add(elem.Clone());
}
}
}
else
{
_currentPageIndex = 0;
_algorithm = _firstPageAlgorithm;
if (this.ComboBoxItems != null)
{
_secondPageNodesList.Clear();
foreach (ComboboxElement elem in this.ComboBoxItems)
{
_secondPageNodesList.Add(elem.Clone());
}
}
}
this.CanvasItems = graph;
this.IsNodeNamesControlEnabled = false;
this.IsNodeNamesControlVisible = false;
if (_algorithm is IAlgorithmWithQueue)
{
this.ComboBoxItems = (_algorithm as IAlgorithmWithQueue).NodesQueue;
List<Node> nodesList = graph.GetAllNodes();
if (_currentPageIndex == 0)
{
for (int i = 0; i < _firstPageNodesList.Count; i++)
{
Node realNode = nodesList.SingleOrDefault(n => n.ID == _firstPageNodesList[i].SelectedValue?.ID);
this.ComboBoxItems[i].SelectedValue = realNode;
}
}
else
{
for (int i = 0; i < _secondPageNodesList.Count; i++)
{
Node realNode = nodesList.SingleOrDefault(n => n.ID == _secondPageNodesList[i].SelectedValue?.ID);
this.ComboBoxItems[i].SelectedValue = realNode;
}
}
if (_algorithm is BFS)
{
this.IsNodeNamesControlEnabled = true;
this.IsNodeNamesControlVisible = true;
}
if (_algorithm is TopologicalSort && (_algorithm as TopologicalSort).isSortingNodes)
{
this.IsNodeNamesControlEnabled = true;
this.IsNodeNamesControlVisible = true;
}
if (_algorithm is BellmanFord)
{
this.IsNodeNamesControlVisible = true;
if ((_algorithm as BellmanFord).NodesQueue.Where(n => n.SelectedValue != null).Count() == _algorithm.CorrectNodesList.Count)
this.IsNodeNamesControlEnabled = false;
else
this.IsNodeNamesControlEnabled = true;
if ((_algorithm as BellmanFord).IsLastStep)
this.IsStopButtonVisible = true;
}
}
}