add WindowUrgencyChanged ipc event

niri-ipc/src/lib.rs

@@ -1129,6 +1129,8 @@ pub struct Window {
     ///
     /// If the window isn't floating then it is in the tiling layout.
     pub is_floating: bool,
+    /// Whether this window requests your attention.
+    pub is_urgent: bool,
 }
 
 /// Output configuration change result.
@@ -1298,6 +1300,13 @@ pub enum Event {
         /// Id of the newly focused window, or `None` if no window is now focused.
         id: Option<u64>,
     },
+    /// Window urgency changed.
+    WindowUrgencyChanged {
+        /// Id of the window.
+        id: u64,
+        /// The new urgency state of the window.
+        urgent: bool,
+    },
     /// The configured keyboard layouts have changed.
     KeyboardLayoutsChanged {
         /// The new keyboard layout configuration.

niri-ipc/src/state.rs

@@ -181,6 +181,14 @@ impl EventStreamStatePart for WindowsState {
                     win.is_focused = Some(win.id) == id;
                 }
             }
+            Event::WindowUrgencyChanged { id, urgent } => {
+                for win in self.windows.values_mut() {
+                    if win.id == id {
+                        win.is_urgent = urgent;
+                        break;
+                    }
+                }
+            }
             event => return Some(event),
         }
         None

src/ipc/client.rs

@@ -433,6 +433,9 @@ pub fn handle_msg(msg: Msg, json: bool) -> anyhow::Result<()> {
                     Event::WindowFocusChanged { id } => {
                         println!("Window focus changed: {id:?}");
                     }
+                    Event::WindowUrgencyChanged { id, urgent } => {
+                        println!("Window {id}: urgency changed to {urgent}");
+                    }
                     Event::KeyboardLayoutsChanged { keyboard_layouts } => {
                         println!("Keyboard layouts changed: {keyboard_layouts:?}");
                     }

src/ipc/server.rs

@@ -476,6 +476,7 @@ fn make_ipc_window(mapped: &Mapped, workspace_id: Option<WorkspaceId>) -> niri_i
         workspace_id: workspace_id.map(|id| id.get()),
         is_focused: mapped.is_focused(),
         is_floating: mapped.is_floating(),
+        is_urgent: mapped.is_urgent(),
     })
 }
 
@@ -680,6 +681,11 @@ impl State {
             if mapped.is_focused() && !ipc_win.is_focused {
                 events.push(Event::WindowFocusChanged { id: Some(id) });
             }
+
+            let urgent = mapped.is_urgent();
+            if urgent != ipc_win.is_urgent {
+                events.push(Event::WindowUrgencyChanged { id, urgent })
+            }
         });
 
         // Check for closed windows.