ImageView: Reliably show image restored from trash

Closes #316

src/widgets/image_view.rs

@@ -81,6 +81,10 @@ mod imp {
 
         pub drag_source: gtk::DragSource,
 
+        /// File where trash operation has been undone
+        #[property(get, set, nullable)]
+        trash_restore: RefCell<Option<gio::File>>,
+
         pub(super) model: RefCell<LpFileModel>,
         pub(super) preserve_content: Cell<bool>,
 
@@ -522,6 +526,16 @@ impl LpImageView {
 
     /// Handle files are added or removed from directory
     fn model_content_changed_cb(&self) {
+        // Animate to image that was restored from trash
+        if let Some(trash_restore) = self.trash_restore() {
+            if self.model().contains(&trash_restore) {
+                self.set_trash_restore(gio::File::NONE);
+                self.update_sliding_view(&trash_restore);
+                self.scroll_sliding_view(&trash_restore);
+                return;
+            }
+        }
+
         let Some(current_file) = self.current_file() else {
             return;
         };

src/window.rs

@@ -667,17 +667,16 @@ impl LpWindow {
                 toast.connect_button_clicked(glib::clone!(@weak self as win => move |_| {
                     let path = path.clone();
                     glib::spawn_future_local(async move {
+                        win.image_view()
+                            .set_trash_restore(Some(gio::File::for_path(&path)));
                         let result = crate::util::untrash(&path).await;
-                        match result {
+                        if let Err(err) = result {
-                            Ok(()) => win.image_view().set_images_from_files(Vec::from([gio::File::for_path(&path)])),
-                            Err(err) => {
                             log::error!("Failed to untrash {path:?}: {err}");
                             win.show_toast(
                                 gettext("Failed to restore image from trash"),
                                 adw::ToastPriority::High,
                             );
                         }
-                        }
                     });
                 }));
                 self.imp().toast_overlay.add_toast(toast);