Attachments

Attachment.cs

abstract class Attachment<T> : IAttachment
{
    protected T viewModel;

    protected abstract void OnAttach();

    void IAttachment.AttachTo(object obj)
    {
        viewModel = (T)obj;
        OnAttach();
    }
}

AutoAttachmentModule.cs

class AutoAttachmentModule : Module
{
    protected override void AttachToComponentRegistration(
        IComponentRegistry componentRegistry, IComponentRegistration registration)
    {
        registration.Activating += Activating;
    }

    void Activating(object sender, ActivatingEventArgs<object> e)
    {
        var vmType = e.Instance.GetType();

        var attachments = Conventions.FindAll<AttachmentConventions>(vmType)
            .Where(t => e.Context.IsRegistered(t))
            .Select(t => (IAttachment)e.Context.Resolve(t));

        foreach (var a in attachments)
            a.AttachTo(e.Instance);
    }
}

IAttachment.cs

interface IAttachment
{
    void AttachTo(object obj);
}