add Modal::Message to handle errors

crates/app/src/model.rs

@@ -405,14 +405,16 @@ impl Tek {
         match index {
             0 => {
                 let jack = self.jack.clone();
-                self.track_mut()
-                    .expect("no active track")
-                    .devices
-                    .push({
-                        let sampler = Sampler::new(&jack, &"sampler", &[], &[&[], &[]], &[&[], &[]])?;
-                        Device::Sampler(sampler)
-                    });
-                self.modal = None;
+                let sampler = if let Ok(sampler) = Sampler::new(
+                    &jack, &"sampler", &[], &[&[], &[]], &[&[], &[]]
+                ) {
+                    self.modal = None;
+                    Device::Sampler(sampler)
+                } else {
+                    self.modal = Some(Modal::Message(Message::FailedToAddDevice));
+                    return Err("failed to add device".into())
+                };
+                self.track_mut().expect("no active track").devices.push(sampler);
                 Ok(())
             },
             1 => todo!(),
@@ -458,9 +460,20 @@ pub trait HasSelection {
 pub enum Modal {
     Help,
     Menu,
-    Device(usize)
+    Device(usize),
+    Message(Message)
 }
 
+/// Various possible messages
+#[derive(PartialEq, Clone, Copy, Debug)]
+pub enum Message {
+    FailedToAddDevice,
+}
+
+content!(TuiOut: |self: Message| match self {
+    Self::FailedToAddDevice => "Failed to add device"
+});
+
 /// Represents the current user selection in the arranger
 #[derive(PartialEq, Clone, Copy, Debug, Default)]
 pub enum Selection {

crates/app/src/view.rs

@@ -67,10 +67,11 @@ impl Tek {
             Fixed::xy(30, 15, Tui::fg_bg(Rgb(255,255,255), Rgb(16,16,16), Bsp::b(
                 Repeat(" "),
                 Outer(true, Style::default().fg(Tui::g(96)))
-                    .enclose(self.modal.map(|modal|match modal {
+                    .enclose(self.modal.as_ref().map(|modal|match modal {
                         Modal::Menu => self.view_modal_menu().boxed(),
                         Modal::Help => self.view_modal_help().boxed(),
-                        Modal::Device(index) => self.view_modal_device(index).boxed(),
+                        Modal::Device(index) => self.view_modal_device(*index).boxed(),
+                        Modal::Message(message) => self.view_modal_message(message).boxed(),
                     }))
             )))
         ))
@@ -120,6 +121,10 @@ impl Tek {
         Bsp::s(Tui::bold(true, "Add device"), Map::south(1, choices, choice))
     }
 
+    fn view_modal_message <'a> (&'a self, message: &'a Message) -> impl Content<TuiOut> + use<'a> {
+        Bsp::s(message, "[ OK ]")
+    }
+
     /// Spacing between tracks.
     pub(crate) const TRACK_SPACING: usize = 0;
 
@@ -361,14 +366,13 @@ impl<'a> ArrangerView<'a> {
             .right(*width_side, button_2("Z", "add device", *is_editing))
             .middle(*width_mid, per_track_top(*width_mid, ||self.tracks_with_sizes_scrolled(),
                 move|index, track|{
-                    wrap(if *track_selected == Some(index) {
+                    let bg = if *track_selected == Some(index) {
                         track.color.light
                     } else {
                         track.color.base
-                    }.rgb, Tui::g(224), Tui::bold(true, Fill::x(Bsp::e(
-                        Tui::fg_bg(Reset, Reset, "[    "),
-                        Tui::fg_bg(Reset, Reset, "    ]"),
-                    ))))
+                    };
+                    let fg = Tui::g(224);
+                    track.devices.get(0).map(|device|wrap(bg.rgb, fg, device.name()))
                 }))
     }
 

crates/device/src/lib.rs

@@ -38,3 +38,12 @@ pub enum Device {
     #[cfg(feature = "clap")]      Clap, // TODO
     #[cfg(feature = "sf2")]       Sf2,  // TODO
 }
+
+impl Device {
+    pub fn name (&self) -> &str {
+        match self {
+            Self::Sampler(sampler) => sampler.name.as_ref(),
+            _ => todo!(),
+        }
+    }
+}

crates/device/src/sampler/sampler_model.rs

@@ -64,6 +64,7 @@ impl Sampler {
     ) -> Usually<Self> {
         let name = name.as_ref();
         Ok(Self {
+            name: name.into(),
             midi_in: Some(JackMidiIn::new(jack, format!("M/{name}"), midi_from)?),
             audio_ins: vec![
                 JackAudioIn::new(jack, &format!("L/{name}"), audio_from[0])?,