public static EnumerationFlags AddFlag <T>(this EnumerationFlags flags, T value) where T : Enumeration
{
if (flags.AllowMultipleSelections == false && flags.SelectedKeys.Count == 1)
{
throw new ArgumentException("Cannot add item, multiple selections are not allowed");
}
if (flags.SelectedKeys.Contains(value.Key))
{
throw new ArgumentException("State already flagged");
}
flags.SelectedKeys.Add(value.Key);
return(flags);
}
public static void ReplaceFlag(this EnumerationFlags flags, Enumeration old, Enumeration @new)
{
flags.RemoveFlag(old);
flags.AddFlag(@new);
}
public static EnumerationFlags RemoveFlag <T>(this EnumerationFlags flags, T value) where T : Enumeration
{
flags.SelectedKeys.Remove(value.Key);
return(flags);
}
public static bool HasFlag(this EnumerationFlags flags, string key) => flags.SelectedKeys.Exists(x => x == key);
public static bool HasFlag(this EnumerationFlags flags, Enumeration item) => flags.SelectedKeys.Contains(item.Key);
public static int Count(this EnumerationFlags flags) => flags.SelectedKeys.Count;
