⚡ ags(apps-window, osd): drop astal variables on ::destroy

ags/window/AppsWindow.ts

@@ -117,6 +117,7 @@ export const AppsWindow = (mon: number): (Widget.Window) => {
         marginTop: 64,
         onDestroy: () => {
             searchSubscription?.();
+            searchString.drop();
             flowboxConnections.map(id => flowbox.disconnect(id));
         },
         onKeyPressEvent: (_, event: Gdk.Event) => {

ags/window/OSD.ts

@@ -7,20 +7,26 @@ export enum OSDModes {
     BRIGHTNESS
 }
 
-let osdMode: Variable<OSDModes> = new Variable<OSDModes>(OSDModes.SINK);
-let osdIcon: Binding<string | undefined> = osdMode().as((mode: OSDModes) => {
+let osdMode: (Variable<OSDModes>|null);
+let osdIcon: (Binding<string | undefined>|null);
+
+export function setOSDMode(newMode: OSDModes): void {
+    if(!osdMode) return;
+
+    osdMode.set(newMode);
+}
+
+export const OSD = (mon: number) => {
+    osdMode = new Variable<OSDModes>(OSDModes.SINK);
+    osdIcon = osdMode().as((mode: OSDModes) => {
         switch(mode) {
             case OSDModes.SINK: return "󰕾";
             case OSDModes.BRIGHTNESS: return "󰃠";
             default: return "󱧣";
         }
-});
+    });
 
-export function setOSDMode(newMode: OSDModes): void {
-    osdMode.set(newMode);
-}
-
-export const OSD = (mon: number) => new Widget.Window({
+    return new Widget.Window({
         namespace: "osd",
         layer: Astal.Layer.OVERLAY,
         anchor: Astal.WindowAnchor.BOTTOM,
@@ -29,6 +35,12 @@ export const OSD = (mon: number) => new Widget.Window({
         focusOnClick: false,
         clickThrough: true,
         monitor: mon,
+        onDestroy: () => {
+            osdMode?.drop();
+
+            osdMode = null;
+            osdIcon = null;
+        },
         child: new Widget.Box({
             className: "osd",
             children: [
@@ -76,4 +88,5 @@ export const OSD = (mon: number) => new Widget.Window({
                 } as Widget.BoxProps)
             ]
         } as Widget.BoxProps)
-} as Widget.WindowProps);
+    } as Widget.WindowProps);
+}