big ass refactor (rip client)

src/model/track.rs

@@ -0,0 +1,48 @@
+use crate::core::*;
+use crate::model::*;
+
+pub struct Track {
+    pub name:      String,
+    pub sequencer: Sequencer,
+    pub chain:     Chain,
+}
+
+impl Track {
+    pub fn new (
+        name:    &str,
+        tempo:   &Arc<Timebase>,
+        devices: Option<Vec<Box<dyn Device>>>,
+        phrases: Option<Vec<Phrase>>,
+    ) -> Usually<Self> {
+        let sequencer = Sequencer::new(&name, tempo, phrases)?;
+        let chain = Chain::new(&name, devices)?;
+        let (client, _status) = Client::new("init", ClientOptions::NO_START_SERVER)?;
+        {
+            if let (Some(output), Some(input)) = (
+                sequencer.midi_outs()?.get(0).clone(),
+                if let Some(item) = chain.items.get(0) {
+                    if let Some(port) = item.midi_ins()?.get(0) {
+                        Some(port.clone())
+                    } else {
+                        None
+                    }
+                } else {
+                    None
+                }
+            ) {
+                client.connect_ports_by_name(&output, &input)?;
+            }
+        }
+        Ok(Self { name: name.to_string(), sequencer, chain })
+    }
+}
+
+impl PortList for Track {
+    fn midi_ins (&self) -> Usually<Vec<String>> {
+        self.sequencer.midi_ins()
+    }
+    fn audio_outs (&self) -> Usually<Vec<String>> {
+        self.chain.audio_outs()
+    }
+}
+