/// <summary>
/// Add a node to the VisualNodeView children of this control. The position of the
/// new child is specified by the top and left arguments of the method.
/// </summary>
protected void AddNewVisualNodeChild(double left, double top)
{
var child = new VisualNodeView();
_visualNodeChildren.Add(child);
child.Width = ActualWidth / 4;
child.Height = ActualHeight / 4;
cvsMain.Children.Add(child);
Canvas.SetTop(child, top);
Canvas.SetLeft(child, left);
}
/// <summary>
/// Remove the specified child from the VisualNodeView children of this control.
/// </summary>
/// <remarks>
/// To remove the correct child, the method searches the children for a child whose
/// _guid field matches the _guid field of the input node.
/// </remarks>
protected void RemoveVisualNodeChild(VisualNodeView child)
{
_visualNodeChildren.RemoveAll(x => x._guid == child._guid);
}