wip: refactor pt.19: 22 errors

crates/tek_tui/src/tui_app.rs

@@ -55,15 +55,19 @@ where
 {
     type Engine = Tui;
     fn content (&self) -> impl Widget<Engine = Tui> {
+        let menus = self.menu_bar.as_ref().map_or_else(
+            ||&[] as &[Menu<_, _, _>],
+            |m|m.menus.as_slice()
+        );
         Split::down(
             if self.menu_bar.is_some() { 1 } else { 0 },
-            row!(menu in self.menu_bar.menus.iter() => {
+            row!(menu in menus.iter() => {
                 row!(" ", menu.title.as_str(), " ")
             }),
             Split::up(
                 if self.status_bar.is_some() { 1 } else { 0 },
                 widget(&self.status_bar),
-                self.ui
+                widget(&self.ui)
             )
         )
     }

crates/tek_tui/src/tui_phrase.rs

@@ -336,10 +336,18 @@ pub(crate) fn keys_vert () -> Buffer {
                 cell.set_fg(Color::White);
                 cell.set_bg(Color::White);
             },
-            2 => if y % 6 == 0 { cell.set_char('C'); },
-            3 => if y % 6 == 0 { cell.set_symbol(NTH_OCTAVE[(y / 6) as usize]); },
+            2 => if y % 6 == 0 {
+                cell.set_char('C');
+            },
+            3 => if y % 6 == 0 {
+                cell.set_symbol(NTH_OCTAVE[(y / 6) as usize]);
+            },
             _ => {}
         }
     });
     buffer
 }
+
+const NTH_OCTAVE: [&'static str; 11] = [
+    "-2", "-1", "0", "1", "2", "3", "4", "5", "6", "7", "8",
+];

crates/tek_tui/src/tui_sequencer.rs

@@ -1,7 +1,8 @@
 use crate::*;
 use std::cmp::PartialEq;
 
-/// Root level object for standalone `tek_sequencer`
+/// Root level object for standalone `tek_sequencer`.
+/// Also embeddable, in which case the `player` is used for preview.
 pub struct SequencerView<E: Engine> {
     /// Controls the JACK transport.
     pub transport: TransportView<E>,