public static SwitchDescriptorCollection CreateStaticSwitchDescriptors(ICustomAttributeProvider provider)
{
var descriptors = new SwitchDescriptorCollection();
var attrs = provider.GetCustomAttributes(typeof(CommandStaticSwitchAttribute), true);
foreach (var item in attrs)
{
if (item is CommandStaticSwitchAttribute == false)
continue;
var attr = item as CommandStaticSwitchAttribute;
var staticDescriptors = CommandDescriptor.GetSwitchDescriptors(attr.StaticType);
descriptors.AddRange(Filter(staticDescriptors, attr.PropertyNames));
}
return descriptors;
}
private static IEnumerable<SwitchDescriptor> Filter(SwitchDescriptorCollection descriptors, params string[] propertyNames)
{
if (propertyNames.Any() == false)
{
foreach (var item in descriptors)
{
yield return item;
}
}
else
{
foreach (var item in propertyNames)
{
yield return descriptors[item];
}
}
}
private static SwitchDescriptorCollection CreateSwitchDescriptors(Type type)
{
var descriptors = new SwitchDescriptorCollection();
var properties = type.GetProperties();
foreach (var item in properties)
{
if (item.GetCommandSwitchAttribute() == null)
continue;
if (item.CanWrite == false)
throw new Exception(string.Format("'{0}' is not available because it cannot write.", item.Name));
descriptors.Add(new SwitchPropertyInfoDescriptor(item));
}
foreach(var item in GetStaticSwitchDescriptors(type))
{
descriptors.Add(item);
}
descriptors.Sort();
return descriptors;
}