feat: preserve more settings across loads

Author: c-git

src/app.rs

@@ -310,12 +310,17 @@ impl LogViewerApp {
                     match Data::try_from((self.row_idx_field_name.as_ref(), &data[..])) {
                         Ok(mut data) => {
                             if let Some(old_data) = self.data.as_mut() {
-                                // Preserve filter settings across loads of the data
-                                data.filter = old_data.filter.take();
+                                // Preserve settings across loads of the data
+                                data.take_config(
+                                    old_data,
+                                    self.data_display_options.common_fields(),
+                                );
                             }
                             self.data = Some(data);
                             if self.should_scroll_to_end_on_load {
                                 self.move_selected_last();
+                            } else {
+                                self.should_scroll = true;
                             }
                             LoadingStatus::NotInProgress
                         }

src/app/data.rs

@@ -246,6 +246,19 @@ impl Data {
             warn!("Apply called but no filter is available")
         }
     }
+
+    pub fn take_config(&mut self, other: &mut Self, common_fields: &BTreeSet<String>) {
+        let is_filtered = other.is_filtered();
+        self.filter = other.filter.take();
+        if is_filtered {
+            self.apply_filter(common_fields);
+        }
+        if let Some(i) = other.selected_row {
+            if i < self.len() {
+                self.selected_row = Some(i);
+            }
+        }
+    }
 }
 
 fn is_included(