feat: add empty-trash action to trash view context menu

Right-clicking inside the trash view now shows 'Empty trash' when
the trash is not empty, in addition to the existing per-item
restore/delete actions and sort options.

src/app.rs

@@ -2833,7 +2833,7 @@ impl Application for App {
     fn nav_context_menu(
         &self,
     ) -> Option<Vec<widget::menu::Tree<cosmic::Action<Self::Message>>>> {
-        let entity = self.nav_bar_context_id;
+        let items = self.nav_model.iter().map(|entity| {
             let favorite_index_opt = self.nav_model.data::<FavoriteIndex>(entity);
             let location_opt = self.nav_model.data::<Location>(entity);
 
@@ -2919,8 +2919,13 @@ impl Application for App {
                     NavMenuAction::EmptyTrash,
                 ));
             }
+            items
+        });
 
-        Some(cosmic::widget::menu::items(&HashMap::new(), items))
+        Some(cosmic::widget::menu::nav_context(
+            &HashMap::new(),
+            items.collect(),
+        ))
     }
 
     fn nav_model(&self) -> Option<&segmented_button::SingleSelectModel> {

src/menu.rs

@@ -418,6 +418,12 @@ pub fn context_menu<'a>(
             if tab.mode.multiple() {
                 children.push(menu_item(fl!("select-all"), Action::SelectAll).into());
             }
+            if !Trash::is_empty() {
+                if !children.is_empty() {
+                    children.push(divider::horizontal::light().into());
+                }
+                children.push(menu_item(fl!("empty-trash"), Action::EmptyTrash).into());
+            }
             if !children.is_empty() {
                 children.push(divider::horizontal::light().into());
             }