MOBILE-3833 core: Fix empty split views updates

src/core/classes/items-management/list-items-manager.ts

@@ -123,7 +123,13 @@ export class CoreListItemsManager<
      *
      * @param item Item.
      */
-    async select(item: Item): Promise<void> {
+    async select(item: Item | null): Promise<void> {
+        if (!item) {
+            await this.navigateToIndex({ reset: this.resetNavigation() });
+
+            return;
+        }
+
         await this.navigateToItem(item, { reset: this.resetNavigation() });
     }
 
@@ -174,17 +180,9 @@ export class CoreListItemsManager<
     protected updateSelectedItem(route: ActivatedRouteSnapshot | null = null): void {
         super.updateSelectedItem(route);
 
-        if (CoreScreen.isMobile || this.selectedItem !== null || !this.splitView || this.splitView.isNested) {
-            return;
-        }
+        const selectDefault = CoreScreen.isTablet && this.selectedItem === null && this.splitView && !this.splitView.isNested;
 
-        const defaultItem = this.getDefaultItem();
-
-        if (!defaultItem) {
-            return;
-        }
-
-        this.select(defaultItem);
+        this.select(selectDefault ? this.getDefaultItem() : this.selectedItem);
     }
 
     /**

src/core/classes/items-management/routed-items-manager.ts

@@ -119,6 +119,34 @@ export abstract class CoreRoutedItemsManager<
         await CoreNavigator.navigate(pathPrefix + itemPath, { params, ...options });
     }
 
+    /**
+     * Navigate to the index page.
+     *
+     * @param options Navigation options.
+     */
+    protected async navigateToIndex(
+        options: Pick<CoreNavigationOptions, 'reset' | 'replace' | 'animationDirection'> = {},
+    ): Promise<void> {
+        // Get current route in the page.
+        const route = this.getCurrentPageRoute();
+
+        if (route === null) {
+            return;
+        }
+
+        // If the current page is already the index, do nothing.
+        const selectedItemPath = this.getSelectedItemPath(route.snapshot);
+
+        if (selectedItemPath === null) {
+            return;
+        }
+
+        // Navigate to index.
+        const indexPath = selectedItemPath ? selectedItemPath.split('/').fill('../').join('') : '';
+
+        await CoreNavigator.navigate(indexPath, options);
+    }
+
     /**
      * @inheritdoc
      */