/// <summary> /// Clears the source then copies over the new values while validating every new value. /// </summary> /// <typeparam name="T"></typeparam> /// <param name="setting"></param> /// <param name="source"></param> /// <param name="newValues"></param> public static void SetCollection <T>(this IValueParser <T> setting, ICollection <T> source, ICollection <T> newValues) { source.Clear(); foreach (var singleValue in newValues) { setting.ThrowIfInvalid(singleValue); source.Add(singleValue); } }
/// <summary> /// Modifies the collection in the specified way. /// </summary> /// <typeparam name="T"></typeparam> /// <param name="setting"></param> /// <param name="source"></param> /// <param name="value"></param> /// <param name="context"></param> /// <returns></returns> public static IResult ModifyCollection <T>(this IValueParser <T> setting, ICollection <T> source, T value, Context context) { setting.ThrowIfInvalid(value); bool success; switch (context.Action) { case CollectionModificationAction.Toggle: var rCount = source.RemoveAll(value, setting.EqualityComparer, context.MaxRemovalCount); if (rCount <= 0) //Only add if nothing was removed { source.Add(value); } success = true; break; case CollectionModificationAction.Add: source.Add(value); success = true; break; case CollectionModificationAction.AddIfMissing: var contains = source.Contains(value, setting.EqualityComparer); if (!contains) //Only add if not contained in collection { source.Add(value); } success = !contains; break; case CollectionModificationAction.Remove: success = source.RemoveAll(value, setting.EqualityComparer, context.MaxRemovalCount) > 0; //Failure if removed nothing break; default: throw new ArgumentException("Invalid action supplied.", nameof(context)); } return(success ? SetValueResult.FromSuccess(setting, value, $"Successfully {context.ActionString}.") : SetValueResult.FromError(setting, value, $"Already {context.ActionString}.")); }