use new AsRefOpt/AsMutOpt glue traits

app/tek_trait.rs

@@ -125,24 +125,55 @@ pub trait HasMidiClip {
     fn clip (&self) -> Option<Arc<RwLock<MidiClip>>>;
 }
 pub trait HasClock: AsRef<Clock> + AsMut<Clock> {
-    fn clock_mut (&mut self) -> &mut Clock { self.as_mut() }
     fn clock     (&self)     -> &Clock     { self.as_ref() }
+    fn clock_mut (&mut self) -> &mut Clock { self.as_mut() }
 }
 pub trait HasDevices: AsRef<Vec<Device>> + AsMut<Vec<Device>> {
-    fn devices_mut (&mut self) -> &mut Vec<Device> { self.as_mut() }
     fn devices     (&self)     -> &Vec<Device>     { self.as_ref() }
-}
-pub trait HasSelection: AsRef<Selection> + AsMut<Selection> {
-    fn selection_mut (&mut self) -> &mut Selection { self.as_mut() }
-    fn selection     (&self)     -> &Selection     { self.as_ref() }
+    fn devices_mut (&mut self) -> &mut Vec<Device> { self.as_mut() }
 }
 pub trait HasSequencer: AsRef<Sequencer> + AsMut<Sequencer> {
     fn sequencer_mut (&mut self) -> &mut Sequencer { self.as_mut() }
     fn sequencer     (&self)     -> &Sequencer     { self.as_ref() }
 }
-pub trait HasScene: AsRef<Option<Scene>> + AsMut<Option<Scene>> {
-    fn scene_mut (&mut self) -> &mut Option<Scene> { self.as_mut() }
-    fn scene     (&self)     -> Option<&Scene>     { self.as_ref() }
+pub trait HasSceneScroll: HasScenes { fn scene_scroll (&self) -> usize; }
+pub trait HasTrackScroll: HasTracks { fn track_scroll (&self) -> usize; }
+pub trait HasScene: AsRefOpt<Scene> + AsMutOpt<Scene> {
+    fn scene_mut (&mut self) -> Option<&mut Scene> { self.as_mut_opt() }
+    fn scene     (&self)     -> Option<&Scene>     { self.as_ref_opt() }
+}
+pub trait HasSelection: AsRef<Selection> + AsMut<Selection> {
+    fn selection     (&self)     -> &Selection     { self.as_ref() }
+    fn selection_mut (&mut self) -> &mut Selection { self.as_mut() }
+    /// Get the active track
+    #[cfg(feature = "track")]
+    fn selected_track (&self) -> Option<&Track> where Self: HasTracks {
+        let index = self.selection().track()?;
+        self.tracks().get(index)
+    }
+    /// Get a mutable reference to the active track
+    #[cfg(feature = "track")]
+    fn selected_track_mut (&mut self) -> Option<&mut Track> where Self: HasTracks {
+        let index = self.selection().track()?;
+        self.tracks_mut().get_mut(index)
+    }
+    /// Get the active scene
+    #[cfg(feature = "scene")]
+    fn selected_scene (&self) -> Option<&Scene> where Self: HasScenes {
+        let index = self.selection().scene()?;
+        self.scenes().get(index)
+    }
+    /// Get a mutable reference to the active scene
+    #[cfg(feature = "scene")]
+    fn selected_scene_mut (&mut self) -> Option<&mut Scene> where Self: HasScenes {
+        let index = self.selection().scene()?;
+        self.scenes_mut().get_mut(index)
+    }
+    /// Get the active clip
+    #[cfg(feature = "clip")]
+    fn selected_clip (&self) -> Option<Arc<RwLock<MidiClip>>> where Self: HasScenes + HasTracks {
+        self.selected_scene()?.clips.get(self.selection().track()?)?.clone()
+    }
 }
 pub trait HasScenes: AsRef<Vec<Scene>> + AsMut<Vec<Scene>> {
     fn scenes (&self) -> &Vec<Scene> { self.as_ref()  }
@@ -150,12 +181,30 @@ pub trait HasScenes: AsRef<Vec<Scene>> + AsMut<Vec<Scene>> {
     /// Generate the default name for a new scene
     fn scene_default_name (&self) -> Arc<str> { format!("s{:3>}", self.scenes().len() + 1).into() }
     fn scene_longest_name (&self) -> usize { self.scenes().iter().map(|s|s.name.len()).fold(0, usize::max) }
-}
-pub trait HasSceneScroll: HasScenes {
-    fn scene_scroll (&self) -> usize;
-}
-pub trait HasTrackScroll: HasTracks {
-    fn track_scroll (&self) -> usize;
+    /// Add multiple scenes
+    fn scenes_add (&mut self, n: usize) -> Usually<()> where Self: HasTracks {
+        let scene_color_1 = ItemColor::random();
+        let scene_color_2 = ItemColor::random();
+        for i in 0..n {
+            let _ = self.scene_add(None, Some(
+                scene_color_1.mix(scene_color_2, i as f32 / n as f32).into()
+            ))?;
+        }
+        Ok(())
+    }
+    /// Add a scene
+    fn scene_add (&mut self, name: Option<&str>, color: Option<ItemTheme>)
+        -> Usually<(usize, &mut Scene)> where Self: HasTracks
+    {
+        let scene = Scene {
+            name:  name.map_or_else(||self.scene_default_name(), |x|x.to_string().into()),
+            clips: vec![None;self.tracks().len()],
+            color: color.unwrap_or_else(ItemTheme::random),
+        };
+        self.scenes_mut().push(scene);
+        let index = self.scenes().len() - 1;
+        Ok((index, &mut self.scenes_mut()[index]))
+    }
 }
 pub trait HasWidth {
     const MIN_WIDTH: usize;
@@ -170,39 +219,26 @@ pub trait HasMidiBuffers {
 }
 
 /// ```
-/// use tek::{MidiEditor, HasEditor, tengri::Has};
+/// use tek::{*, tengri::*};
 ///
-/// let mut host = TestEditorHost(Some(MidiEditor::default()));
-/// struct TestEditorHost(Option<MidiEditor>);
-/// impl AsRef<Option<MidiEditor>> for TestEditorHost {
-///   fn get (&self) -> &Option<MidiEditor> { &self.0 }
-///   fn get_mut (&mut self) -> &mut Option<MidiEditor> { &mut self.0 }
-/// }
+/// struct Test(Option<MidiEditor>);
+/// impl_as_ref_opt!(MidiEditor: |self: Test|self.0.as_ref());
+/// impl_as_mut_opt!(MidiEditor: |self: Test|self.0.as_mut());
 ///
+/// let mut host = Test(Some(MidiEditor::default()));
 /// let _ = host.editor();
 /// let _ = host.editor_mut();
 /// let _ = host.is_editing();
 /// let _ = host.editor_w();
 /// let _ = host.editor_h();
 /// ```
-pub trait HasEditor: AsRef<Option<MidiEditor>> {
-    fn editor (&self) -> Option<&MidiEditor> {
-        self.get().as_ref()
-    }
-    fn editor_mut (&mut self) -> Option<&mut MidiEditor> {
-        self.get_mut().as_mut()
-    }
-    fn is_editing (&self) -> bool {
-        self.editor().is_some()
-    }
-    fn editor_w (&self) -> usize {
-        self.editor().map(|e|e.size.w()).unwrap_or(0) as usize
-    }
-    fn editor_h (&self) -> usize {
-        self.editor().map(|e|e.size.h()).unwrap_or(0) as usize
-    }
+pub trait HasEditor: AsRefOpt<MidiEditor> + AsMutOpt<MidiEditor> {
+    fn editor (&self) -> Option<&MidiEditor> { self.as_ref_opt() }
+    fn editor_mut (&mut self) -> Option<&mut MidiEditor> { self.as_mut_opt() }
+    fn is_editing (&self) -> bool { self.editor().is_some() }
+    fn editor_w (&self) -> usize { self.editor().map(|e|e.size.w()).unwrap_or(0) as usize }
+    fn editor_h (&self) -> usize { self.editor().map(|e|e.size.h()).unwrap_or(0) as usize }
 }
-
 pub trait HasClips {
     fn clips <'a> (&'a self) -> std::sync::RwLockReadGuard<'a, ClipPool>;
     fn clips_mut <'a> (&'a self) -> std::sync::RwLockWriteGuard<'a, ClipPool>;
@@ -212,7 +248,6 @@ pub trait HasClips {
         (self.clips().len() - 1, clip)
     }
 }
-
 /// Trait for thing that may receive MIDI.
 pub trait HasMidiIns {
     fn midi_ins (&self) -> &Vec<MidiInput>;
@@ -237,7 +272,6 @@ pub trait HasMidiIns {
         })
     }
 }
-
 /// Trait for thing that may output MIDI.
 pub trait HasMidiOuts {
     fn midi_outs (&self) -> &Vec<MidiOutput>;
@@ -259,9 +293,7 @@ pub trait HasMidiOuts {
         }
     }
 }
-
-impl<T: AsRef<Vec<Track>> + AsMut<Vec<Track>> + Send + Sync> HasTracks for T {}
-pub trait HasTracks: AsRef<Vec<Track>> + AsMut<Vec<Track>> + Send + Sync {
+pub trait HasTracks: AsRef<Vec<Track>> + AsMut<Vec<Track>> {
     fn tracks (&self) -> &Vec<Track> { self.as_ref() }
     fn tracks_mut (&mut self) -> &mut Vec<Track> { self.as_mut() }
     /// Run audio callbacks for every track and every device
@@ -292,10 +324,9 @@ pub trait HasTracks: AsRef<Vec<Track>> + AsMut<Vec<Track>> + Send + Sync {
     /// Spacing between tracks.
     const TRACK_SPACING: usize = 0;
 }
-
-pub trait HasTrack {
-    fn track (&self) -> Option<&Track>;
-    fn track_mut (&mut self) -> Option<&mut Track>;
+pub trait HasTrack: AsRefOpt<Track> + AsMutOpt<Track> {
+    fn track (&self) -> Option<&Track> { self.as_ref_opt() }
+    fn track_mut (&mut self) -> Option<&mut Track> { self.as_mut_opt() }
     #[cfg(feature = "port")] fn view_midi_ins_status <'a> (&'a self, theme: ItemTheme) -> impl Content<TuiOut> + 'a {
         self.track().map(move|track|view_ports_status(theme, "MIDI ins:  ", &track.sequencer.midi_ins))
     }
@@ -523,33 +554,6 @@ pub trait MidiViewer: Measured<TuiOut> + MidiRange + MidiPoint + Debug + Send +
     }
 }
 
-pub trait AddScene: HasScenes + HasTracks {
-    /// Add multiple scenes
-    fn scenes_add (&mut self, n: usize) -> Usually<()> {
-        let scene_color_1 = ItemColor::random();
-        let scene_color_2 = ItemColor::random();
-        for i in 0..n {
-            let _ = self.scene_add(None, Some(
-                scene_color_1.mix(scene_color_2, i as f32 / n as f32).into()
-            ))?;
-        }
-        Ok(())
-    }
-    /// Add a scene
-    fn scene_add (&mut self, name: Option<&str>, color: Option<ItemTheme>)
-        -> Usually<(usize, &mut Scene)>
-    {
-        let scene = Scene {
-            name:  name.map_or_else(||self.scene_default_name(), |x|x.to_string().into()),
-            clips: vec![None;self.tracks().len()],
-            color: color.unwrap_or_else(ItemTheme::random),
-        };
-        self.scenes_mut().push(scene);
-        let index = self.scenes().len() - 1;
-        Ok((index, &mut self.scenes_mut()[index]))
-    }
-}
-
 pub trait ClipsView: TracksView + ScenesView {
 
     fn view_scenes_clips <'a> (&'a self)