/// <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}."));
}