/// <summary>
/// Is called when the left mouse button is pressed.
/// </summary>
/// <param name="e"></param>
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
HitTestResult result = VisualTreeHelper.HitTest(this, e.GetPosition(this));
var node = result.VisualHit.FindFirstAncestorOfType <NetworkViewNodeItem>();
if (node != null)
{
if (CaptureMouse())
{
_mouseDraggingNode = node;
_algorithm.Freeze(node.Content as INode);
e.Handled = true;
}
}
else
{
base.OnMouseLeftButtonDown(e);
}
}
