wayland: run idle code unconditionally

src/backend.rs

@@ -32,10 +32,6 @@ pub trait Backend {
         let _ = idle;
     }
 
-    fn supports_idle(&self) -> bool {
-        false
-    }
-
     fn import_environment(&self) -> bool {
         false
     }

src/backends/metal.rs

@@ -198,10 +198,6 @@ impl Backend for MetalBackend {
         }
     }
 
-    fn supports_idle(&self) -> bool {
-        true
-    }
-
     fn import_environment(&self) -> bool {
         true
     }

src/globals.rs

@@ -166,6 +166,7 @@ impl Globals {
         add_singleton!(WpContentTypeManagerV1Global);
         add_singleton!(XdgActivationV1Global);
         add_singleton!(ExtForeignToplevelListV1Global);
+        add_singleton!(ZwpIdleInhibitManagerV1Global);
     }
 
     pub fn add_backend_singletons(&self, backend: &Rc<dyn Backend>) {
@@ -174,9 +175,6 @@ impl Globals {
                 self.add_global_no_broadcast(&Rc::new($name::new(self.name())));
             };
         }
-        if backend.supports_idle() {
-            add_singleton!(ZwpIdleInhibitManagerV1Global);
-        }
         if backend.supports_presentation_feedback() {
             add_singleton!(WpPresentationGlobal);
         }

src/it/test_backend.rs

@@ -206,10 +206,6 @@ impl Backend for TestBackend {
 
     fn set_idle(&self, _idle: bool) {}
 
-    fn supports_idle(&self) -> bool {
-        true
-    }
-
     fn supports_presentation_feedback(&self) -> bool {
         true
     }

src/tasks/idle.rs

@@ -13,9 +13,6 @@ use {
 };
 
 pub async fn idle(state: Rc<State>, backend: Rc<dyn Backend>) {
-    if !backend.supports_idle() {
-        return;
-    }
     let timer = match TimerFd::new(c::CLOCK_MONOTONIC) {
         Ok(t) => t,
         Err(e) => {