more doc string and reexport fixes

src/model.rs

@@ -1,24 +1,10 @@
 //! Application state.
 
-pub mod looper;
-pub mod mixer;
-pub mod phrase;
-pub mod plugin;
-pub mod sampler;
-pub mod scene;
-pub mod track;
-pub mod transport;
-
-pub use self::phrase::{Phrase, PhraseData};
-pub use self::scene::Scene;
-pub use self::track::Track;
-pub use self::sampler::{Sampler, Sample, read_sample_data};
-pub use self::mixer::Mixer;
-pub use self::plugin::{Plugin, PluginKind, lv2::LV2Plugin};
-pub use self::transport::{TransportToolbar, TransportFocus};
+submod! { looper mixer phrase plugin sampler scene track transport }
 
 use crate::{core::*, view::*};
 
+/// Root of application state.
 pub struct App {
     /// Main JACK client.
     pub jack:          Option<JackClient>,
@@ -156,9 +142,19 @@ impl App {
     }
 }
 
+/// Different sections of the UI that may be focused.
 #[derive(PartialEq, Clone, Copy)]
-pub enum AppFocus { Transport, Arranger, Sequencer, Chain, }
-impl Default for AppFocus { fn default () -> Self { Self::Arranger } }
+pub enum AppFocus {
+    Transport, 
+    Arranger,
+    Sequencer,
+    Chain,
+}
+
+impl Default for AppFocus {
+    fn default () -> Self { Self::Arranger }
+}
+
 impl AppFocus {
     pub fn prev (&mut self) {
         *self = match self {