Pattern mute and so on

src/state/mute.rs

@@ -0,0 +1,53 @@
+use std::collections::HashSet;
+
+#[derive(Default)]
+pub struct MuteState {
+    pub muted: HashSet<(usize, usize)>,
+    pub soloed: HashSet<(usize, usize)>,
+}
+
+impl MuteState {
+    pub fn toggle_mute(&mut self, bank: usize, pattern: usize) {
+        let key = (bank, pattern);
+        if self.muted.contains(&key) {
+            self.muted.remove(&key);
+        } else {
+            self.muted.insert(key);
+        }
+    }
+
+    pub fn toggle_solo(&mut self, bank: usize, pattern: usize) {
+        let key = (bank, pattern);
+        if self.soloed.contains(&key) {
+            self.soloed.remove(&key);
+        } else {
+            self.soloed.insert(key);
+        }
+    }
+
+    pub fn clear_mute(&mut self) {
+        self.muted.clear();
+    }
+
+    pub fn clear_solo(&mut self) {
+        self.soloed.clear();
+    }
+
+    pub fn is_muted(&self, bank: usize, pattern: usize) -> bool {
+        self.muted.contains(&(bank, pattern))
+    }
+
+    pub fn is_soloed(&self, bank: usize, pattern: usize) -> bool {
+        self.soloed.contains(&(bank, pattern))
+    }
+
+    pub fn is_effectively_muted(&self, bank: usize, pattern: usize) -> bool {
+        if self.muted.contains(&(bank, pattern)) {
+            return true;
+        }
+        if !self.soloed.is_empty() && !self.soloed.contains(&(bank, pattern)) {
+            return true;
+        }
+        false
+    }
+}