By default, Caliburn Micro uses the MEF. And, by default, the MEF uses attributes to identify components.
I’m pretty lazy and, given the choice, I’d rather use conventions and auto-registration. Luckily someone else was way ahead of me! And the MEFContrib project contains all the building blocks you need to create your own conventions.
I was originally planning on implementing a convention to register the first declared interface but, due to the vagaries of reflection, I took the easy way out and registered all interfaces from the same assembly (did I mention I’m lazy?).
public class AppPartRegistry : PartRegistry
{
public AppPartRegistry()
{
this.Part().RegisterAllInterfaces();
this.Scan(c => c.Assembly(typeof(AppPartRegistry).Assembly));
}
}
public static class PartConventions
{
public static void RegisterAllInterfaces(this PartConventionBuilder<PartConvention> builder)
{
builder
.ForTypesMatching(t => true)
.ImportConstructor()
.MakeNonShared()
.Exports(e =>
{
e.Export().Members(t => t.GetInterfaces().Where(i => i.Assembly == t.Assembly).ToArray());
});
}
}
Update: Import (greediest) ctor, and make registrations transient.
