add Exit trait to modals

src/model.rs

@@ -34,7 +34,7 @@ pub struct App {
     /// Display buffer for sequencer
     pub seq_buf:       BufferedSequencerView,
     /// Optional modal dialog
-    pub modal:         Option<Box<dyn Component>>,
+    pub modal:         Option<Box<dyn Exit>>,
     /// Currently focused section
     pub section:       AppSection,
     /// Whether the current focus section has input priority
@@ -57,8 +57,6 @@ pub struct App {
     xdg:               Option<Arc<XdgApp>>,
     /// Main audio outputs.
     audio_outs:        Vec<Arc<Port<Unowned>>>,
-    /// Tick enable?
-    metronome:         bool,
     /// Number of frames requested by process callback
     chunk_size:        usize,
 
@@ -78,10 +76,8 @@ impl App {
             chunk_size: 0,
             entered: true,
             jack: Some(jack),
-            metronome: false,
             midi_in: None,
             midi_ins: vec![],
-            modal: first_run.then(||crate::config::SetupModal(Some(xdg.clone())).boxed()),
             note_cursor: 0,
             note_start: 2,
             scene_cursor: 1,
@@ -92,6 +88,9 @@ impl App {
             time_cursor: 0,
             track_cursor: 1,
             tracks: vec![],
+            modal: first_run.then(
+                ||Exit::boxed(crate::config::SetupModal(Some(xdg.clone()), false))
+            ),
             xdg: Some(xdg),
         })
     }