test: fix coverage run

crates/midi/src/clip.rs

@@ -1,9 +1,41 @@
+use crate::*;
+
 mod clip_editor; pub use self::clip_editor::*;
 mod clip_launch; pub use self::clip_launch::*;
 mod clip_model;  pub use self::clip_model::*;
 mod clip_play;   pub use self::clip_play::*;
 mod clip_view;   pub use self::clip_view::*;
 
+pub trait HasEditor {
+    fn editor (&self) -> &Option<MidiEditor>;
+    fn editor_mut (&mut self) -> &Option<MidiEditor>;
+    fn is_editing (&self) -> bool { true }
+    fn editor_w (&self) -> usize { 0 }
+    fn editor_h (&self) -> usize { 0 }
+}
+
+#[macro_export] macro_rules! has_editor {
+    (|$self:ident: $Struct:ident|{
+        editor     = $e0:expr;
+        editor_w   = $e1:expr;
+        editor_h   = $e2:expr;
+        is_editing = $e3:expr;
+    }) => {
+        impl HasEditor for $Struct {
+            fn editor (&$self) -> &Option<MidiEditor> { &$e0 }
+            fn editor_mut (&mut $self) -> &Option<MidiEditor> { &mut $e0 }
+            fn editor_w (&$self) -> usize { $e1 }
+            fn editor_h (&$self) -> usize { $e2 }
+            fn is_editing (&$self) -> bool { $e3 }
+        }
+    };
+    (|$self:ident:$Struct:ident$(<$($L:lifetime),*$($T:ident$(:$U:path)?),*>)?|$cb:expr) => {
+        impl $(<$($L),*$($T $(: $U)?),*>)? HasEditor for $Struct $(<$($L),*$($T),*>)? {
+            fn editor (&$self) -> &MidiEditor { &$cb }
+        }
+    };
+}
+
 #[cfg(test)] #[test] pub fn test_midi_clip () {
     let clip = MidiClip::stop_all();
     println!("{clip:?}");