use main loop with input everywhere

src/sampler.rs

@@ -6,9 +6,11 @@ pub use self::jack::*;
 pub use self::render::*;
 use crate::prelude::*;
 
+pub const ACTIONS: [(&'static str, &'static str);0] = [];
+
 pub struct Sampler {
+    exited:          bool,
     jack:            Jack<Notifications>,
-    exit:            bool,
     samples:         Vec<Sample>,
     selected_sample: usize,
     selected_column: usize,
@@ -29,7 +31,7 @@ impl Sampler {
             )
         )?;
         Ok(Self {
-            exit:            false,
+            exited:          false,
             selected_sample: 0,
             selected_column: 0,
             samples: vec![
@@ -62,3 +64,12 @@ impl Sample {
     }
 
 }
+
+impl Exitable for Sampler {
+    fn exit (&mut self) {
+        self.exited = true
+    }
+    fn exited (&self) -> bool {
+        self.exited
+    }
+}