/// <summary>
/// Validate slide. We guarantee that Validate() will be called after BuildUp()
/// </summary>
public virtual void Validate(SlideLoadingContext context)
{
var slideLoadingContext = new SlideBuildingContext(context, this);
foreach (var block in Blocks)
{
block.Validate(slideLoadingContext);
}
}
public Slide Load(byte[] fileContent, SlideLoadingContext context)
{
var slideFile = context.SlideFile ?? new FileInfo("<internal>");
var slideType = DetectSlideType(fileContent, slideFile.Name);
var slide = (Slide)fileContent.DeserializeXml(slideType);
slide.BuildUp(context);
slide.Validate(context);
return(slide);
}
/// <summary>
/// Building slide and blocks, fill properties, initialize some values. Any work we need to do before work with slide.
/// </summary>
public virtual void BuildUp(SlideLoadingContext context)
{
Meta?.FixPaths(context.SlideFile);
Info = new SlideInfo(context.Unit, context.SlideFile);
if (Blocks == null)
{
Blocks = new SlideBlock[0];
}
/* Validate block types. We should do it before building up blocks */
CheckBlockTypes();
/* ... and build blocks */
var slideLoadingContext = new SlideBuildingContext(context, this);
Blocks = Blocks.SelectMany(b => b.BuildUp(slideLoadingContext, ImmutableHashSet <string> .Empty)).ToArray();
DefineBlockTypes();
}
public SlideBuildingContext(SlideLoadingContext slideContext, Slide slide)
: this(slideContext.CourseId, slideContext.Unit, slideContext.CourseSettings, slideContext.CourseDirectory, slide)
{
}
/// <summary>
/// Loads slide from XML file
/// </summary>
/// <returns>Slide, QuizSlide or ExerciseSlide object</returns>
public Slide Load(SlideLoadingContext context)
{
var fileContent = context.SlideFile.ReadAllContent();
return(Load(fileContent, context));
}
