Handle toplevel removal

src/main.rs

@@ -210,6 +210,11 @@ impl Application for App {
                             img: None,
                         });
                     }
+                    wayland::Event::CloseToplevel(handle) => {
+                        if let Some(idx) = self.toplevels.iter().position(|x| x.handle == handle) {
+                            self.toplevels.remove(idx);
+                        }
+                    }
                     wayland::Event::WorkspaceCapture(handle, image) => {
                         if let Some(workspace) = self.workspace_for_handle_mut(&handle) {
                             workspace.img = Some(image.clone());

src/wayland.rs

@@ -56,6 +56,7 @@ pub enum Event {
         zcosmic_toplevel_handle_v1::ZcosmicToplevelHandleV1,
         ToplevelInfo,
     ),
+    CloseToplevel(zcosmic_toplevel_handle_v1::ZcosmicToplevelHandleV1),
     ToplevelCapture(
         zcosmic_toplevel_handle_v1::ZcosmicToplevelHandleV1,
         image::Handle,
@@ -230,7 +231,7 @@ impl ToplevelInfoHandler for AppData {
         _qh: &QueueHandle<Self>,
         toplevel: &zcosmic_toplevel_handle_v1::ZcosmicToplevelHandleV1,
     ) {
-        // TODO
+        self.send_event(Event::CloseToplevel(toplevel.clone()));
     }
 }