public PresentationSession(Presentation presentation, Slide[] slides)
{
this.presentation = presentation;
Index = 0;
this.slides = slides;
currentSlide = null;
}
public Step RequestNext()
{
if (Index >= presentation.SlidesCount)
{
return(null);
}
if (currentSlide == null)
{
currentSlide = slides[Index].CreateSession();
slides[Index].Show();
}
var step = currentSlide.RequestNext();
if (step == null)
{
Index++;
currentSlide = null;
return(RequestNext());
}
step.Show();
return(step);
}