wip: refactor pt.21: api traits

crates/tek_api/src/transport.rs

@@ -1,16 +1,42 @@
 use crate::*;
 
-pub struct Transport {
-    pub jack:      Arc<RwLock<JackClient>>,
-    /// JACK transport handle.
-    pub transport: jack::Transport,
-    /// Current sample rate, tempo, and PPQ.
-    pub clock:     Arc<Clock>,
-    /// Enable metronome?
-    pub metronome: bool,
+pub trait TransportModelApi: JackModelApi + ClockModelApi {
+    fn transport (&self) -> &jack::Transport;
+    fn metronome (&self) -> bool;
 }
 
-impl Debug for Transport {
+impl JackModelApi for TransportModel {
+    fn jack (&self) -> &Arc<RwLock<JackClient>> {
+        &self.jack
+    }
+}
+
+impl ClockModelApi for TransportModel {
+    fn clock (&self) -> &Arc<Clock> {
+        &self.clock
+    }
+}
+
+impl TransportModelApi for TransportModel {
+    fn transport (&self) -> &jack::Transport {
+        &self.transport
+    }
+    fn metronome (&self) -> bool {
+        self.metronome
+    }
+}
+
+pub struct TransportModel {
+    jack:      Arc<RwLock<JackClient>>,
+    /// Current sample rate, tempo, and PPQ.
+    clock:     Arc<Clock>,
+    /// JACK transport handle.
+    transport: jack::Transport,
+    /// Enable metronome?
+    metronome: bool,
+}
+
+impl Debug for TransportModel {
     fn fmt (&self, f: &mut Formatter<'_>) -> std::result::Result<(), Error> {
         f.debug_struct("transport")
             .field("jack",      &self.jack)
@@ -21,7 +47,7 @@ impl Debug for Transport {
     }
 }
 
-impl Transport {
+impl TransportModel {
     pub fn toggle_play (&mut self) -> Usually<()> {
         let playing = self.clock.playing.read().unwrap().expect("1st sample has not been processed yet");
         let playing = match playing {