/// <summary>
/// Registers dependencies, and injects them into new instances of view components in response to each request.
/// </summary>
/// <returns>A concrete instance of an <see cref="Controller"/>.</returns>
public object Create(ViewComponentContext context) {
/*------------------------------------------------------------------------------------------------------------------------
| Validate parameters
\-----------------------------------------------------------------------------------------------------------------------*/
Contract.Requires(context, nameof(context));
/*------------------------------------------------------------------------------------------------------------------------
| Determine view component type
\-----------------------------------------------------------------------------------------------------------------------*/
var type = context.ViewComponentDescriptor.TypeInfo.AsType();
/*------------------------------------------------------------------------------------------------------------------------
| Configure and return appropriate view component
\-----------------------------------------------------------------------------------------------------------------------*/
if (StandardEditorComposer.IsEditorComponent(type)) {
return _standardEditorComposer.ActivateEditorComponent(type, _topicRepository);
}
throw new InvalidOperationException($"Unknown view component {type.Name}");
}
/// <summary>
/// Registers dependencies, and injects them into new instances of view components in response to each request.
/// </summary>
/// <returns>A concrete instance of an <see cref="IController"/>.</returns>
public object Create(ViewComponentContext context) {
/*------------------------------------------------------------------------------------------------------------------------
| Determine view component type
\-----------------------------------------------------------------------------------------------------------------------*/
var viewComponentType = context.ViewComponentDescriptor.TypeInfo.AsType();
/*------------------------------------------------------------------------------------------------------------------------
| Establish dependencies
>-------------------------------------------------------------------------------------------------------------------------
| ### HACK JJC20200725: Typically, we use a singleton life cycle for the hierarchical navigation—and, indeed, we have one
| defined. During development, however, we'll be using a transient scoped dependency in order to avoid the caching
| implemented in the singleton version. Prior to deployment, we'll switch back to the singleton.
\-----------------------------------------------------------------------------------------------------------------------*/
var coursewareTopicMappingService = (IHierarchicalTopicMappingService<TrackedNavigationTopicViewModel>)null;
if (viewComponentType.Namespace.Contains("Courses", StringComparison.OrdinalIgnoreCase)) {
coursewareTopicMappingService = new HierarchicalTopicMappingService<TrackedNavigationTopicViewModel>(
_topicRepository,
_topicMappingService
);
}
/*------------------------------------------------------------------------------------------------------------------------
| Resolve
\-----------------------------------------------------------------------------------------------------------------------*/
//Handle standard topic editor view components
if (StandardEditorComposer.IsEditorComponent(viewComponentType)) {
return _standardEditorComposer.ActivateEditorComponent(
viewComponentType,
_topicRepository
);
}
//Handle GoldSim-specific view components
return viewComponentType.Name switch {
nameof(CookiesNoticeViewComponent)
=> new CookiesNoticeViewComponent(),
nameof(MetadataLookupViewComponent)
=> new MetadataLookupViewComponent(_topicRepository),
nameof(MenuViewComponent)
=> new MenuViewComponent(_topicRepository, _hierarchicalTopicMappingService),
nameof(PageLevelNavigationViewComponent)
=> new PageLevelNavigationViewComponent(_topicRepository, _hierarchicalTopicMappingService),
nameof(CallsToActionViewComponent)
=> new CallsToActionViewComponent(_topicRepository, _hierarchicalTopicMappingService),
nameof(FooterViewComponent)
=> new FooterViewComponent(_topicRepository, _hierarchicalTopicMappingService),
nameof(CourseListViewComponent)
=> new CourseListViewComponent(_topicRepository, coursewareTopicMappingService),
nameof(UnitListViewComponent)
=> new UnitListViewComponent(_topicRepository, coursewareTopicMappingService),
nameof(LessonListViewComponent)
=> new LessonListViewComponent(_topicRepository, coursewareTopicMappingService),
nameof(LessonPagingViewComponent)
=> new LessonPagingViewComponent(_topicRepository, _topicMappingService),
_ => throw new Exception($"Unknown view component {viewComponentType.Name}")
};
}