feat(ags4): implement lockscreen

modules/ags/gtk4/widgets/subclasses/menubutton.ts

@@ -0,0 +1,34 @@
+import { register } from 'astal';
+import { Gtk } from 'astal/gtk4';
+
+import astalify, { type AstalifyProps, type ConstructProps } from '../astalify';
+
+
+export type MenuButtonProps = ConstructProps<
+    MenuButtonClass,
+    Gtk.MenuButton.ConstructorProps & AstalifyProps
+>;
+
+@register({ GTypeName: 'MenuButton' })
+export class MenuButtonClass extends astalify(Gtk.MenuButton) {
+    constructor({ cssName = 'menubutton', ...props }: MenuButtonProps = {}) {
+        super({ cssName, ...props });
+    }
+
+    getChildren(self: MenuButtonClass) {
+        return [self.popover, self.child];
+    }
+
+    setChildren(self: MenuButtonClass, children: Gtk.Widget[]) {
+        for (const child of children) {
+            if (child instanceof Gtk.Popover) {
+                self.set_popover(child);
+            }
+            else {
+                self.set_child(child);
+            }
+        }
+    }
+}
+
+export const MenuButton = (props?: MenuButtonProps) => new MenuButtonClass(props);