Esempio n. 1
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        // Check the validate of the selected course view/selected object and update accordingly.
        void UpdateSelection()
        {
            // Check the selection validity.
            if (!activeCourseDesignator.IsAllControls && !eventDB.IsCoursePresent(activeCourseDesignator.CourseId)) {
                // Active course was deleted. Switch to all controls.
                activeCourseDesignator = CourseDesignator.AllControls;
                ClearSelection();
            }

            // Check that variation still exists.
            if (activeCourseDesignator.IsVariation && QueryEvent.HasVariations(eventDB, activeCourseDesignator.CourseId)) {
                IEnumerable<VariationInfo> variations = QueryEvent.GetAllVariations(eventDB, activeCourseDesignator.CourseId);
                if (!variations.Any(v => v.Equals(activeCourseDesignator.VariationInfo)))
                    activeCourseDesignator = activeCourseDesignator.WithAllVariations();
            }

            // Does the current part still exist?
            int numberOfParts = QueryEvent.CountCourseParts(eventDB, activeCourseDesignator);
            if (!activeCourseDesignator.IsAllControls && !activeCourseDesignator.AllParts && 
                (numberOfParts == 1 || activeCourseDesignator.Part >= numberOfParts)) 
            {
                // No part that large any more.
                if (numberOfParts > 1)
                    activeCourseDesignator = activeCourseDesignator.WithPart(numberOfParts - 1);
                else
                    activeCourseDesignator = activeCourseDesignator.WithAllParts();
                ClearSelection();
            }

            if (selectedCourseControl.IsNotNone && !eventDB.IsCourseControlPresent(selectedCourseControl)) {
                // Selected course control is no longer there.
                selectedCourseControl = Id<CourseControl>.None;
                ClearSelection();
            }

            if (selectedCourseControl.IsNotNone && activeCourseDesignator.IsNotAllControls && 
                (!activeCourseDesignator.AllParts || activeCourseDesignator.IsVariation) && 
                !QueryEvent.IsCourseControlInPart(eventDB, activeCourseDesignator, selectedCourseControl)) {
                // Selected course control is not in active part.
                // Could be allowed if it's the finish.
                Id<ControlPoint> controlId = eventDB.GetCourseControl(selectedCourseControl).control;
                if (!(eventDB.IsControlPresent(controlId) && 
                      eventDB.GetControl(controlId).kind == ControlPointKind.Finish &&
                      QueryEvent.GetPartOptions(eventDB, activeCourseDesignator).ShowFinish))
                {
                    selectedCourseControl = Id<CourseControl>.None;
                    ClearSelection();
                }
            }

            if (selectedCourseControl2.IsNotNone && !eventDB.IsCourseControlPresent(selectedCourseControl2)) {
                // Selected course control 2 is no longer there.
                selectedCourseControl2 = Id<CourseControl>.None;
                ClearSelection();
            }

            if (selectedCourseControl2.IsNotNone && activeCourseDesignator.IsNotAllControls && !activeCourseDesignator.AllParts && 
                !QueryEvent.IsCourseControlInPart(eventDB, activeCourseDesignator, selectedCourseControl2)) {
                // Selected course control 2 is not in active part.
                selectedCourseControl2 = Id<CourseControl>.None;
                ClearSelection();
            }

            if (selectedControl.IsNotNone && !eventDB.IsControlPresent(selectedControl)) {
                // Selected control is no longer there.
                ClearSelection();
            }

            if (selectedSpecial.IsNotNone && !eventDB.IsSpecialPresent(selectedSpecial)) {
                // Selected special is no longer there.
                ClearSelection();
            }

            if (selectedSpecial.IsNotNone && !(activeCourseDesignator.IsAllControls || QueryEvent.CourseContainsSpecial(eventDB, activeCourseDesignator, selectedSpecial))) {
                // Selected special is not in current course
                ClearSelection();
            }
        }