/// <summary>
/// Invalidates the <see cref="Tab.VisibleRectangle">bounds</see> of the <see cref="Tab"/>.
/// </summary>
public void Invalidate()
{
ITab parent = this.Owner;
if (parent is Tab)
{
((Tab)parent).NotifyInvalidate();
}
else if (parent != null)
{
parent.Invalidate();
}
}
