Feat: continue refactoring

src/state/audio.rs

@@ -1,6 +1,8 @@
 use doux::audio::AudioDeviceInfo;
 use std::path::PathBuf;
 
+use super::CyclicEnum;
+
 #[derive(Clone, Copy, PartialEq, Eq, Default)]
 pub enum RefreshRate {
     #[default]
@@ -128,6 +130,10 @@ pub enum EngineSection {
     Samples,
 }
 
+impl CyclicEnum for EngineSection {
+    const VARIANTS: &'static [Self] = &[Self::Devices, Self::Settings, Self::Samples];
+}
+
 #[derive(Clone, Copy, PartialEq, Eq, Default)]
 pub enum DeviceKind {
     #[default]
@@ -145,26 +151,14 @@ pub enum SettingKind {
     Lookahead,
 }
 
-impl SettingKind {
-    pub fn next(self) -> Self {
-        match self {
-            Self::Channels => Self::BufferSize,
-            Self::BufferSize => Self::Polyphony,
-            Self::Polyphony => Self::Nudge,
-            Self::Nudge => Self::Lookahead,
-            Self::Lookahead => Self::Channels,
-        }
-    }
-
-    pub fn prev(self) -> Self {
-        match self {
-            Self::Channels => Self::Lookahead,
-            Self::BufferSize => Self::Channels,
-            Self::Polyphony => Self::BufferSize,
-            Self::Nudge => Self::Polyphony,
-            Self::Lookahead => Self::Nudge,
-        }
-    }
+impl CyclicEnum for SettingKind {
+    const VARIANTS: &'static [Self] = &[
+        Self::Channels,
+        Self::BufferSize,
+        Self::Polyphony,
+        Self::Nudge,
+        Self::Lookahead,
+    ];
 }
 
 pub struct Metrics {
@@ -242,19 +236,11 @@ impl AudioSettings {
     }
 
     pub fn next_section(&mut self) {
-        self.section = match self.section {
-            EngineSection::Devices => EngineSection::Settings,
-            EngineSection::Settings => EngineSection::Samples,
-            EngineSection::Samples => EngineSection::Devices,
-        };
+        self.section = self.section.next();
     }
 
     pub fn prev_section(&mut self) {
-        self.section = match self.section {
-            EngineSection::Devices => EngineSection::Samples,
-            EngineSection::Settings => EngineSection::Devices,
-            EngineSection::Samples => EngineSection::Settings,
-        };
+        self.section = self.section.prev();
     }
 
     pub fn current_output_device_index(&self) -> usize {