/// <summary>
/// Handles the CollectionChanged event of the ChildNodes control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="NotifyCollectionChangedEventArgs"/> instance containing the event data.</param>
private void ChildNodes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
foreach (var node in e.NewItems.OfType <INode>())
{
var control = new NodeContainerControl(node);
m_nodesSet.Add(node, control);
Children.Add(control);
}
break;
case NotifyCollectionChangedAction.Remove:
var toRemove = m_nodesSet.Where(n => e.OldItems.Contains(n.Key)).ToList();
foreach (var pair in toRemove)
{
m_nodesSet.Remove(pair.Key);
Children.Remove(pair.Value);
}
break;
case NotifyCollectionChangedAction.Reset:
Children.Clear();
m_nodesSet.Clear();
m_selectedNodes.Clear();
break;
}
}
/// <summary>
/// Adds the existing nodes.
/// </summary>
private void AddExistingNodes()
{
foreach (var node in m_diagram.ChildNodes)
{
var control = new NodeContainerControl(node);
m_nodesSet.Add(node, control);
Children.Add(control);
}
}