/// <summary>
/// Registers a help element.
/// </summary>
/// <param name="listener">The element to register</param>
/// <returns>If the element was succesfully registered</returns>
public bool AddListener(ShowHelp listener)
{
if (_helpListeners.Contains(listener))
return false;
_helpListeners.Add(listener);
if (_helpShown)
listener.Show();
return true;
}
/// <summary>
/// Unregisters a help element.
/// </summary>
/// <param name="listener">The element to unregister</param>
/// <returns>If the element was succesfully unregistered</returns>
public bool RemoveListener(ShowHelp listener)
{
if (!_helpListeners.Contains(listener))
return false;
_helpListeners.Remove(listener);
if (!_helpShown)
listener.Hide();
return true;
}
