Fixed keyboard shortcuts sometimes not working

Would fail if clearing all notifications with `C` which would hide the
window. When later opening the Control Center, shortcuts wouldn't work
until manually focused. Might be a Sway bug, but this fixes it on my
end.

Author: ErikReider

src/controlCenter/controlCenter.vala

@@ -366,20 +366,6 @@ namespace SwayNotificationCenter {
                                   ConfigModel.instance.control_center_height);
         }
 
-        private void on_visibility_change () {
-            // Updates all widgets on visibility change
-            foreach (var widget in widgets) {
-                widget.on_cc_visibility_change (visible);
-            }
-
-            if (this.visible) {
-                add_css_class ("open");
-            } else {
-                remove_css_class ("open");
-            }
-            swaync_daemon.emit_subscribe ();
-        }
-
         public bool toggle_visibility () {
             var cc_visibility = !this.visible;
             set_visibility (cc_visibility);
@@ -390,13 +376,24 @@ namespace SwayNotificationCenter {
             if (this.visible == visibility) {
                 return;
             }
-            if (visibility) {
-                // Destroy the wl_surface to get a new "enter-monitor" signal
-                ((Gtk.Widget) this).unrealize ();
-            }
+            // Destroy the wl_surface to get a new "enter-monitor" signal and
+            // fixes issues where keyboard shortcuts stop working after clearing
+            // all notifications.
+            ((Gtk.Widget) this).unrealize ();
+
             this.set_visible (visibility);
 
-            on_visibility_change ();
+            // Updates all widgets on visibility change
+            foreach (var widget in widgets) {
+                widget.on_cc_visibility_change (visible);
+            }
+
+            if (this.visible) {
+                add_css_class ("open");
+            } else {
+                remove_css_class ("open");
+            }
+            swaync_daemon.emit_subscribe ();
         }
 
         public inline bool get_visibility () {