fix: retain view rows until refresh results arrive

README.md

@@ -345,7 +345,7 @@ Malformed individual entries—including invalid video IDs, missing required fie
 
 Feed views sort all loaded videos newest-first using available upload dates, with undated videos last. The budget limits what has been inspected: later loads may discover newer videos and insert them above older rows, while selection and pending description requests stay attached to the same video ID. Publication labels use `YYYY-MM-DD`; `~` marks an estimated UTC date, and `Unknown` means unavailable metadata.
 
-Pane titles show animated spinners while content loads. Errors retain loaded rows and stop automatic retries; `r` refreshes the current view.
+Pane titles show animated spinners while content loads. Refresh keeps the current rows and selection visible until a valid first page replaces them, including when the new result is empty. Errors retain loaded rows and stop automatic retries; `r` refreshes the current view from page one.
 
 Video info shows a thumbnail, title, author/publication details, and a clipped description excerpt. Press `d` again to read the full description in the same popup. Thumbnails and full descriptions are cached in memory across selections and views: 64 full descriptions and eight inactive decoded thumbnails, plus the selected image. Caches last for the session; a successful refresh clears them. Preview loading, decoding, and image resizing run asynchronously.
 

src/main.rs

@@ -358,9 +358,8 @@ impl View {
         }
     }
 
+    // Invalidate pagination, retaining displayed rows until the first replacement page is valid.
     fn reset(&mut self) {
-        self.videos.clear();
-        self.selection = TableState::default();
         self.loaded = false;
         self.next_start = 1;
         self.has_more = false;
@@ -378,6 +377,10 @@ impl View {
         if feed {
             self.feed_cursor.accept(&page.feed_progress)?;
         }
+        if !self.loaded {
+            self.videos.clear();
+            self.selection = TableState::default();
+        }
         if !page.videos.is_empty() {
             let selected = if feed {
                 self.selection.selected().and_then(|index| {
@@ -1355,6 +1358,8 @@ impl App {
         if query != view.submitted_query {
             view.submitted_query = query.to_owned();
             view.reset();
+            view.videos.clear();
+            view.selection = TableState::default();
             self.job = None;
         }
         self.switch_view(index);
@@ -1463,6 +1468,8 @@ impl App {
                 view.source
                     .channels(&self.config, &self.feed_channels, &view.group_channels);
             if channels.is_empty() {
+                view.videos.clear();
+                view.selection = TableState::default();
                 view.loaded = true;
                 view.has_more = false;
                 self.status = format!(
@@ -1560,10 +1567,11 @@ impl App {
             }
         });
         let feed = self.views[self.view_index].source != ViewSource::Search;
-        if let Err(error) =
-            parsed.and_then(|page| self.views[self.view_index].accept_page(page, feed))
-        {
-            self.views[self.view_index].page_error = Some(error);
+        let replacing = !self.views[self.view_index].loaded;
+        match parsed.and_then(|page| self.views[self.view_index].accept_page(page, feed)) {
+            Ok(()) if replacing => self.close_preview(),
+            Err(error) => self.views[self.view_index].page_error = Some(error),
+            _ => {}
         }
         self.status = self.view_status();
     }
@@ -4563,7 +4571,7 @@ mod tests {
         app.apply_config(config::load(&app.config_path).unwrap());
         let view = &app.views[app.view_index];
         assert_eq!(view.source, group);
-        assert!(view.videos.is_empty());
+        assert_eq!(view.videos[0].title, "Cached");
         assert!(!view.loaded);
         assert_eq!(view.next_start, 1);
         assert_eq!(view.group_channels.len(), 1);
@@ -8301,6 +8309,55 @@ tags.cancel = "z"
         assert!(app.views[1].prefetch_requested);
     }
 
+    #[test]
+    fn refresh_keeps_rows_until_a_valid_replacement_arrives() {
+        let mut app = app(&["tubular"]);
+        app.view_index = 1;
+        // Duplicate URLs fail request creation before any extractor is spawned.
+        app.feed_channels = vec!["fixture".into(), "fixture".into()];
+        finish_feed_fixture(
+            &mut app,
+            r#"{"entries":[{"id":"jNQXAC9IVRw","title":"Old"},{"id":"rQ_J9WH6CGk","title":"Selected"}]}
+{"entries":[]}"#,
+            false,
+        );
+        app.views[1].selection.select(Some(1));
+        app.load_view();
+        assert_eq!(app.views[1].videos[1].title, "Selected");
+        assert_eq!(app.views[1].selection.selected(), Some(1));
+        assert!(app.views[1].page_error.is_some());
+        assert_eq!(app.views[1].next_start, 1);
+
+        app.finish_page(Ok("not JSON".into()));
+        assert_eq!(app.views[1].videos[1].title, "Selected");
+        assert_eq!(app.views[1].selection.selected(), Some(1));
+
+        finish_feed_fixture(
+            &mut app,
+            r#"{"entries":[{"id":"jNQXAC9IVRw","title":"Updated"}]}
+{"entries":[]}"#,
+            true,
+        );
+        assert_eq!(app.views[1].videos.len(), 1);
+        assert_eq!(app.views[1].videos[0].title, "Updated");
+        assert_eq!(app.views[1].selection.selected(), Some(0));
+        assert_eq!(app.views[1].next_start, PAGE_SIZE + 1);
+        finish_feed_fixture(
+            &mut app,
+            r#"{"entries":[{"id":"rQ_J9WH6CGk","title":"Next page"}]}
+{"entries":[]}"#,
+            false,
+        );
+        assert_eq!(app.views[1].videos[0].title, "Updated");
+        assert_eq!(app.views[1].videos[1].title, "Next page");
+
+        app.load_view();
+        assert_eq!(app.views[1].videos[0].title, "Updated");
+        finish_feed_fixture(&mut app, "{\"entries\":[]}\n{\"entries\":[]}", false);
+        assert!(app.views[1].videos.is_empty());
+        assert_eq!(app.views[1].selection.selected(), None);
+    }
+
     #[test]
     fn loaded_feed_rows_are_visible_sorted_and_keep_selection_and_description_identity() {
         let mut app = app(&["tubular"]);
@@ -8407,7 +8464,6 @@ tags.cancel = "z"
             assert_eq!(app.views[1].feed_cursor.plan(1).unwrap(), next);
             assert!(!app.can_prefetch());
             app.views[1].reset();
-            assert!(app.views[1].videos.is_empty());
             assert!(app.views[1].feed_requests.is_empty());
             assert!(!app.views[1].prefetch_requested);
             assert_eq!(app.views[1].feed_cursor.plan(1).unwrap()[0].start, 1);
@@ -8510,7 +8566,7 @@ tags.cancel = "z"
             ..Default::default()
         });
         assert!(!app.views[2].loaded);
-        assert!(app.views[2].videos.is_empty());
+        assert_eq!(app.views[2].videos[0].id, "jNQXAC9IVRw");
         assert!(app.views[2].feed_requests.is_empty());
         assert!(!app.views[2].prefetch_requested);
         assert_eq!(app.views[2].next_start, 1);
@@ -8568,11 +8624,9 @@ tags.cancel = "z"
         view.feed_requests = view.feed_cursor.plan(1).unwrap();
         view.prefetch_requested = true;
         view.reset();
-        assert!(view.videos.is_empty());
         assert!(view.feed_requests.is_empty());
         assert!(!view.feed_cursor.has_more());
         assert!(!view.prefetch_requested);
-        assert_eq!(view.selection.selected(), None);
         assert_eq!(view.next_start, 1);
         assert!(!view.loaded);
         assert!(!view.has_more);
@@ -8934,10 +8988,12 @@ tags.cancel = "z"
             pinned_categories: Vec::new(),
         });
         assert_eq!(app.views[app.view_index].name, "Rust");
-        assert!(app.views[app.view_index].videos.is_empty());
-        assert!(app.views[app.view_index].selection.selected().is_none());
         assert!(!app.views[app.view_index].loaded);
         assert!(app.job.is_none());
+        app.load_page();
+        assert!(app.views[app.view_index].videos.is_empty());
+        assert!(app.views[app.view_index].selection.selected().is_none());
+        assert!(app.views[app.view_index].loaded);
     }
 
     #[test]
@@ -9011,8 +9067,6 @@ tags.cancel = "z"
             Some("Retained description")
         );
         assert!(!app.views[4].loaded);
-        assert!(app.views[4].videos.is_empty());
-        assert_eq!(app.views[4].selection.selected(), None);
         assert_eq!(app.views[4].next_start, 1);
         assert!(!app.views[4].has_more);
         assert!(app.views[4].feed_requests.is_empty());
@@ -9050,8 +9104,6 @@ tags.cancel = "z"
         });
         assert_eq!(app.feed_channels, vec![direct, added, registered]);
         assert!(!app.views[1].loaded);
-        assert!(app.views[1].videos.is_empty());
-        assert_eq!(app.views[1].selection.selected(), None);
         assert_eq!(app.views[1].next_start, 1);
         assert!(!app.views[1].has_more);
         assert!(app.views[1].feed_requests.is_empty());
@@ -9073,8 +9125,6 @@ tags.cancel = "z"
         });
         assert_eq!(app.feed_channels, vec![direct, registered]);
         assert!(!app.views[1].loaded);
-        assert!(app.views[1].videos.is_empty());
-        assert_eq!(app.views[1].selection.selected(), None);
         assert_eq!(app.view_index, 1);
         assert!(app.job.is_none());
     }