wayland: dispatcher: move overriding visibility manager to root

D-Bus support is large, and should have an option to be excluded. Move
the struct implementing D-Bus support from the dispatcher to the main
file, so it can be replaced with a stub.

src/main.rs

@@ -20,6 +20,21 @@ use std::sync::Arc;
 use std::time::Instant;
 use tokio::task;
 use wayland_client::globals;
+use zbus::InterfaceRef;
+
+pub struct VisibilityManager(InterfaceRef<OSK0<Dispatcher>>);
+
+impl VisibilityManager {
+    pub fn set_visible(&self, visible: bool)
+    {
+        let osk = self.0.clone();
+
+        task::spawn(async move {
+            let osk = osk.get().await;
+            osk.set_visible(visible).await;
+        });
+    }
+}
 
 #[tokio::main(flavor = "current_thread")]
 async fn main()
@@ -48,7 +63,7 @@ async fn main()
     let gfx = dispatcher.graphics();
     let osk = OSK0::start(&conn_zbus, gfx, conn_wl.clone()).await;
     match osk {
-        Ok(k) => dispatcher.set_osk(k),
+        Ok(k) => dispatcher.set_osk(VisibilityManager(k)),
         Err(e) => eprintln!("warn: bind to sm.puri.OSK0 failed: {}", e),
     }
 

src/wayland/dispatcher.rs

@@ -3,11 +3,11 @@
  * Copyright (c) 2024, Richard Acayan. All rights reserved.
  */
 
+use crate::VisibilityManager;
 use crate::core::Button;
 use crate::core::Display;
 use crate::core::Graphics;
 use crate::core::Layout;
-use crate::dbus::osk::OSK0;
 use crate::wayland::Seat;
 use crate::wayland::Surface;
 use crate::wayland::VirtualKeyboard;
@@ -24,7 +24,6 @@ use crate::wayland::virtual_keyboard_unstable_v1::zwp_virtual_keyboard_v1;
 use std::io::Error;
 use std::sync::Arc;
 use std::sync::Mutex;
-use tokio::task;
 use wayland_client::Connection;
 use wayland_client::Dispatch;
 use wayland_client::Proxy;
@@ -41,12 +40,11 @@ use wayland_client::protocol::wl_shm;
 use wayland_client::protocol::wl_shm_pool;
 use wayland_client::protocol::wl_surface;
 use wayland_client::protocol::wl_touch;
-use zbus::InterfaceRef;
 
 pub struct Dispatcher {
     seat: Seat<Surface<Self>, VirtualKeyboard, Self>,
     gfx: Arc<Mutex<Graphics<Surface<Self>>>>,
-    osk: Option<InterfaceRef<OSK0<Self>>>,
+    osk: Option<VisibilityManager>,
 }
 
 impl Dispatcher {
@@ -103,13 +101,15 @@ impl Dispatcher {
         self.seat.button()
     }
 
+    #[allow(dead_code)]
     #[inline(always)]
     pub fn graphics(&self) -> Arc<Mutex<Graphics<Surface<Self>>>>
     {
         self.gfx.clone()
     }
 
-    pub fn set_osk(&mut self, osk: InterfaceRef<OSK0<Self>>)
+    #[allow(dead_code)]
+    pub fn set_osk(&mut self, osk: VisibilityManager)
     {
         self.osk = Some(osk);
     }
@@ -122,18 +122,7 @@ impl Dispatcher {
     fn show(&self)
     {
         match &self.osk {
-            Some(osk) => {
-                /*
-                 * Clone the reference from the struct so it can be given to the
-                 * spawned task.
-                 */
-                let osk = osk.clone();
-
-                task::spawn(async move {
-                    let osk = osk.get().await;
-                    osk.set_visible(true).await;
-                });
-            },
+            Some(osk) => osk.set_visible(true),
             None => {
                 let mut gfx = self.gfx.lock().unwrap();
                 gfx.display_mut().show();
@@ -144,18 +133,7 @@ impl Dispatcher {
     fn hide(&self)
     {
         match &self.osk {
-            Some(osk) => {
-                /*
-                 * Clone the reference from the struct so it can be given to the
-                 * spawned task.
-                 */
-                let osk = osk.clone();
-
-                task::spawn(async move {
-                    let osk = osk.get().await;
-                    osk.set_visible(false).await;
-                });
-            },
+            Some(osk) => osk.set_visible(false),
             None => {
                 let mut gfx = self.gfx.lock().unwrap();
                 gfx.display_mut().hide();