/// <summary>
/// Remove the last shown showable from the UI.
/// </summary>
public virtual void ClearLastShowable()
{
if (lastShowableButtons == null)
{
return;
}
lastShowableButtons.OnButtonsChanges -= UpdateButtons;
lastShowableButtons.OnButtonChange -= UpdateButton;
lastShowableButtons = null;
}
/// <summary>
/// Keeps the new showable.
/// </summary>
/// <param name="showable">The showable.</param>
protected virtual void KeepNewShowable(IShowable showable)
{
var showableButtons = showable as IShowableButtons;
var show = showable != null && showableButtons != null;
SetVisible(show);
if (showableButtons == null)
{
return;
}
var data = showableButtons.GetButtons();
UpdateButtons(data);
showableButtons.OnButtonsChanges += UpdateButtons;
showableButtons.OnButtonChange += UpdateButton;
lastShowableButtons = showableButtons;
}
