PurplePen.SelectionMgr.UpdateCourseViews C# (CSharp) Method

        void UpdateCourseViews()
        {
            List<KeyValuePair<Id<Course>,string>> courseViewPairs = new List<KeyValuePair<Id<Course>,string>>(); // Holds the list of course views and names, for sorting. Does NOT include all controls.

            // Get all the pairs of course ids in sorted order.
            Id<Course>[] courseIds = QueryEvent.SortedCourseIds(eventDB);

            // Copy to the names and ids arrays, adding in All Controls as the first element.
            courseViewNames = new string[courseIds.Length + 1];
            courseViewIds = new Id<Course>[courseIds.Length + 1];
            courseViewNames[0] = MiscText.AllControls;
            courseViewIds[0] = Id<Course>.None;
            for (int i = 1; i < courseViewIds.Length; ++i) {
                courseViewNames[i] = eventDB.GetCourse(courseIds[i - 1]).name;
                courseViewIds[i] = courseIds[i-1];
            }

            // Figure out which course view is the active one. We have already validate that the active course id
            // is present.
            if (activeCourseDesignator.IsAllControls) {
                activeCourseViewIndex = 0;
                activeCourseView = CourseView.CreateViewingCourseView(eventDB, CourseDesignator.AllControls);
            }
            else {
                for (int i = 1; i < courseViewIds.Length; ++i) {
                    if (courseViewIds[i] == activeCourseDesignator.CourseId) {
                        activeCourseViewIndex = i;
                        activeCourseView = CourseView.CreateViewingCourseView(eventDB, activeCourseDesignator);
                    }
                }
            }

            // Get/create the topology course view. Not supported (null) for score and all controls. Always shows
            // all variations for a course with variations.
            if (activeCourseView.Kind == CourseView.CourseViewKind.Normal) {
                if (QueryEvent.HasVariations(activeCourseView.EventDB, activeCourseView.BaseCourseId) || !activeCourseView.CourseDesignator.AllParts) {
                    topologyCourseView = CourseView.CreateViewingCourseView(eventDB, new CourseDesignator(activeCourseView.BaseCourseId));
                }
                else {
                    topologyCourseView = activeCourseView;
                }
            }
            else if (activeCourseView.Kind == CourseView.CourseViewKind.AllVariations) {
                topologyCourseView = activeCourseView;
            }
            else {
                topologyCourseView = null;
            }
        }