Handle xdg-system-bell-v1, marking workspace as "urgent"

src/state.rs

@@ -108,6 +108,7 @@ use smithay::{
         virtual_keyboard::VirtualKeyboardManagerState,
         xdg_activation::XdgActivationState,
         xdg_foreign::XdgForeignState,
+        xdg_system_bell::XdgSystemBellState,
         xwayland_keyboard_grab::XWaylandKeyboardGrabState,
         xwayland_shell::XWaylandShellState,
     },
@@ -704,6 +705,8 @@ impl State {
 
         let a11y_keyboard_monitor_state = A11yKeyboardMonitorState::new(&async_executor);
 
+        XdgSystemBellState::new::<State>(dh);
+
         State {
             common: Common {
                 config,

src/wayland/handlers/mod.rs

@@ -46,5 +46,6 @@ pub mod workspace;
 pub mod xdg_activation;
 pub mod xdg_foreign;
 pub mod xdg_shell;
+pub mod xdg_system_bell;
 pub mod xwayland_keyboard_grab;
 pub mod xwayland_shell;

src/wayland/handlers/xdg_system_bell.rs

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
+use crate::{state::State, wayland::protocols::workspace::State as WState};
+use smithay::{
+    delegate_xdg_system_bell, reexports::wayland_server::protocol::wl_surface::WlSurface,
+    wayland::xdg_system_bell::XdgSystemBellHandler,
+};
+
+impl XdgSystemBellHandler for State {
+    fn ring(&mut self, surface: Option<WlSurface>) {
+        let shell = self.common.shell.read();
+
+        if let Some(surface) = surface {
+            if let Some((workspace, _output)) = shell.workspace_for_surface(&surface) {
+                let mut workspace_guard = self.common.workspace_state.update();
+                workspace_guard.add_workspace_state(&workspace, WState::Urgent);
+            }
+        }
+    }
+}
+
+delegate_xdg_system_bell!(State);