fix(agsV2): make current-client accurate

nixosModules/ags/v2/widgets/bar/items/current-client.tsx

@@ -1,4 +1,4 @@
-import { bind } from 'astal';
+import { bind, Variable } from 'astal';
 
 import AstalApps from 'gi://AstalApps?version=0.1';
 const Applications = AstalApps.Apps.new();
@@ -10,35 +10,53 @@ import Separator from '../../misc/separator';
 
 
 export default () => {
-    const focused = bind(Hyprland, 'focusedClient');
+    const focusedIcon = Variable<string>('');
+    const focusedTitle = Variable<string>('');
+
+    let lastFocused: string | undefined;
+
+    const updateVars = (
+        client: AstalHyprland.Client | null | undefined = Hyprland.get_focused_client(),
+    ) => {
+        lastFocused = client?.get_address();
+        const app = Applications.query(
+            client?.get_class() ?? '',
+            false,
+        )[0];
+
+        focusedIcon.set(app.iconName ?? '');
+        focusedTitle.set(client?.get_title() ?? '');
+        const id = client?.connect('notify::title', (c) => {
+            if (c.get_address() !== lastFocused) {
+                c.disconnect(id);
+            }
+            focusedTitle.set(c.get_title());
+        });
+    };
+
+    updateVars();
+    Hyprland.connect('notify::focused-client', () => updateVars());
+    Hyprland.connect('client-removed', () => updateVars());
+    Hyprland.connect('client-added', () => {
+        updateVars(Hyprland.get_client(JSON.parse(Hyprland.message('j/activewindow')).address));
+    });
 
     return (
         <box
             className="bar-item current-window"
-            visible={focused.as(Boolean)}
+            visible={bind(focusedTitle).as((title) => title !== '')}
         >
             <icon
                 css="font-size: 32px;"
-                setup={(self) => {
+                icon={bind(focusedIcon)}
-                    self.hook(Hyprland, 'notify::focused-client', () => {
-                        const app = Applications.query(
-                            Hyprland.get_focused_client()?.get_class() ?? '',
-                            false,
-                        )[0];
-
-                        self.set_icon(app.iconName ?? '');
-                    });
-                }}
             />
 
             <Separator size={8} />
 
-            {focused.as((client) => (client && (
             <label
-                    label={bind(client, 'title').as(String)}
+                label={bind(focusedTitle)}
                 truncate
             />
-            )))}
         </box>
     );
 };