separate input handling for sampler

crates/app/src/model.rs

@@ -59,17 +59,22 @@ use crate::*;
     pub keys_mix: SourceIter<'static>,
     // Cache of formatted strings
     pub view_cache: Arc<RwLock<ViewCache>>,
+    // Input handler function
+    pub handler: Option<fn(&mut Self, &TuiIn)->Result<Option<bool>, Box<(dyn std::error::Error + 'static)>>>
 }
 
 impl Tek {
+
     pub(crate) fn clip (&self) -> Option<Arc<RwLock<MidiClip>>> {
         self.scene()?.clips.get(self.selected().track()?)?.clone()
     }
+
     pub(crate) fn toggle_loop (&mut self) {
         if let Some(clip) = self.clip() {
             clip.write().unwrap().toggle_loop()
         }
     }
+
     pub(crate) fn activate (&mut self) -> Usually<()> {
         let selected = self.selected().clone();
         match selected {
@@ -95,6 +100,7 @@ impl Tek {
         }
         Ok(())
     }
+
     pub fn tracks_add (
         &mut self, count: usize, width: Option<usize>,
         midi_from: &[PortConnect], midi_to: &[PortConnect],
@@ -111,6 +117,7 @@ impl Tek {
         }
         Ok(())
     }
+
     pub fn track_add (
         &mut self, name: Option<&str>, color: Option<ItemPalette>,
         midi_froms: &[PortConnect],
@@ -141,12 +148,14 @@ impl Tek {
         }
         Ok((index, &mut self.tracks_mut()[index]))
     }
+
     pub fn track_del (&mut self, index: usize) {
         self.tracks_mut().remove(index);
         for scene in self.scenes_mut().iter_mut() {
             scene.clips.remove(index);
         }
     }
+
     pub fn scenes_add (&mut self, n: usize) -> Usually<()> {
         let scene_color_1 = ItemColor::random();
         let scene_color_2 = ItemColor::random();
@@ -157,6 +166,7 @@ impl Tek {
         }
         Ok(())
     }
+
     pub fn scene_add (&mut self, name: Option<&str>, color: Option<ItemPalette>)
         -> Usually<(usize, &mut Scene)>
     {
@@ -169,9 +179,11 @@ impl Tek {
         let index = self.scenes().len() - 1;
         Ok((index, &mut self.scenes_mut()[index]))
     }
+
     pub fn scene_default_name (&self) -> Arc<str> {
         format!("Sc{:3>}", self.scenes().len() + 1).into()
     }
+
 }
 
 has_size!(<TuiOut>|self: Tek|&self.size);
@@ -385,6 +397,19 @@ impl Track {
         }
         None
     }
+    pub fn sampler_mut (&mut self, mut nth: usize) -> Option<&mut Sampler> {
+        for device in self.devices.iter_mut() {
+            match device {
+                Device::Sampler(s) => if nth == 0 {
+                    return Some(s);
+                } else {
+                    nth -= 1;
+                },
+                _ => {}
+            }
+        }
+        None
+    }
 }
 
 impl HasTracks for Tek {