re-arrange desktop when switching to it

src/extern/kwin.d.ts

@@ -14,6 +14,7 @@ declare const workspace: {
     activeClient: KwinClient;
 
     // Signals
+    currentDesktopChanged: QSignal<[oldDesktopNumber: number]>
     clientAdded: QSignal<[KwinClient]>;
     clientRemoved: QSignal<[AbstractClient]>;
     clientMinimized: QSignal<[AbstractClient]>;
@@ -21,6 +22,7 @@ declare const workspace: {
     clientMaximizeSet: QSignal<[AbstractClient, horizontally: boolean, vertically: boolean]>;
     clientActivated: QSignal<[AbstractClient]>;
     numberDesktopsChanged: QSignal<[oldNumberOfVirtualDesktops: number]>;
+    currentActivityChanged: QSignal<[newActivity: string]>;
     virtualScreenSizeChanged: QSignal<[void]>;
 
     // Functions

src/workspace.ts

@@ -52,6 +52,14 @@ function initWorkspaceSignalHandlers(world: World) {
         });
     });
 
+    manager.connect(workspace.currentDesktopChanged, () => {
+        world.do(() => {}); // re-arrange desktop
+    });
+
+    manager.connect(workspace.currentActivityChanged, () => {
+        world.do(() => {}); // re-arrange desktop
+    });
+
     manager.connect(workspace.numberDesktopsChanged, (oldNumberOfVirtualDesktops: number) => {
         world.updateDesktops();
     });