fix scrolling issue

packages/web/src/app/[domain]/search/components/filterPanel/index.tsx

@@ -15,6 +15,7 @@ import { useGetSelectedFromQuery } from "./useGetSelectedFromQuery";
 interface FilePanelProps {
     matches: SearchResultFile[];
     repoInfo: Record<number, RepositoryInfo>;
+    onFilterChange?: () => void;
 }
 
 /**
@@ -31,10 +32,12 @@ interface FilePanelProps {
  * 
  * @param matches - Array of search result files to filter
  * @param repoInfo - Information about repositories including their display names and icons
+ * @param onFilterChange - Optional callback that is called whenever a filter is applied or removed
  */
 export const FilterPanel = ({
     matches,
     repoInfo,
+    onFilterChange,
 }: FilePanelProps) => {
     const router = useRouter();
     const searchParams = useSearchParams();
@@ -148,6 +151,7 @@ export const FilterPanel = ({
 
                     if (newParams.toString() !== searchParams.toString()) {
                         router.replace(`?${newParams.toString()}`, { scroll: false });
+                        onFilterChange?.();
                     }
                 }}
                 className="max-h-[50%]"
@@ -170,6 +174,7 @@ export const FilterPanel = ({
 
                     if (newParams.toString() !== searchParams.toString()) {
                         router.replace(`?${newParams.toString()}`, { scroll: false });
+                        onFilterChange?.();
                     }
                 }}
                 className="overflow-auto"

packages/web/src/app/[domain]/search/components/searchResultsPage.tsx

@@ -31,7 +31,7 @@ import { useStreamedSearch } from "../useStreamedSearch";
 import { CodePreviewPanel } from "./codePreviewPanel";
 import { FilterPanel } from "./filterPanel";
 import { useFilteredMatches } from "./filterPanel/useFilterMatches";
-import { SearchResultsPanel } from "./searchResultsPanel";
+import { SearchResultsPanel, SearchResultsPanelHandle } from "./searchResultsPanel";
 
 interface SearchResultsPageProps {
     searchQuery: string;
@@ -198,6 +198,7 @@ const PanelGroup = ({
     const [previewedFile, setPreviewedFile] = useState<SearchResultFile | undefined>(undefined);
     const filteredFileMatches = useFilteredMatches(fileMatches);
     const filterPanelRef = useRef<ImperativePanelHandle>(null);
+    const searchResultsPanelRef = useRef<SearchResultsPanelHandle>(null);
     const [selectedMatchIndex, setSelectedMatchIndex] = useState(0);
 
     const [isFilterPanelCollapsed, setIsFilterPanelCollapsed] = useLocalStorage('isFilterPanelCollapsed', false);
@@ -238,6 +239,9 @@ const PanelGroup = ({
                 <FilterPanel
                     matches={fileMatches}
                     repoInfo={repoInfo}
+                    onFilterChange={() => {
+                        searchResultsPanelRef.current?.resetScroll();
+                    }}
                 />
             </ResizablePanel>
             {isFilterPanelCollapsed && (
@@ -325,6 +329,7 @@ const PanelGroup = ({
                 </div>
                 {filteredFileMatches.length > 0 ? (
                     <SearchResultsPanel
+                        ref={searchResultsPanelRef}
                         fileMatches={filteredFileMatches}
                         onOpenFilePreview={(fileMatch, matchIndex) => {
                             setSelectedMatchIndex(matchIndex ?? 0);

packages/web/src/app/[domain]/search/components/searchResultsPanel/index.tsx

@@ -3,8 +3,8 @@
 import { RepositoryInfo, SearchResultFile } from "@/features/search/types";
 import { FileMatchContainer, MAX_MATCHES_TO_PREVIEW } from "./fileMatchContainer";
 import { useVirtualizer, VirtualItem } from "@tanstack/react-virtual";
-import { useCallback, useEffect, useRef, useState } from "react";
-import { useDebounce, usePrevious } from "@uidotdev/usehooks";
+import { useCallback, useEffect, useImperativeHandle, useRef, useState, forwardRef } from "react";
+import { useDebounce } from "@uidotdev/usehooks";
 
 interface SearchResultsPanelProps {
     fileMatches: SearchResultFile[];
@@ -15,6 +15,10 @@ interface SearchResultsPanelProps {
     repoInfo: Record<number, RepositoryInfo>;
 }
 
+export interface SearchResultsPanelHandle {
+    resetScroll: () => void;
+}
+
 const ESTIMATED_LINE_HEIGHT_PX = 20;
 const ESTIMATED_NUMBER_OF_LINES_PER_CODE_CELL = 10;
 const ESTIMATED_MATCH_CONTAINER_HEIGHT_PX = 30;
@@ -25,14 +29,14 @@ type ScrollHistoryState = {
     showAllMatchesStates?: boolean[];
 }
 
-export const SearchResultsPanel = ({
+export const SearchResultsPanel = forwardRef<SearchResultsPanelHandle, SearchResultsPanelProps>(({
     fileMatches,
     onOpenFilePreview,
     isLoadMoreButtonVisible,
     onLoadMoreButtonClicked,
     isBranchFilteringEnabled,
     repoInfo,
-}: SearchResultsPanelProps) => {
+}, ref) => {
     const parentRef = useRef<HTMLDivElement>(null);
 
     // Restore the scroll offset, measurements cache, and other state from the history
@@ -73,18 +77,16 @@ export const SearchResultsPanel = ({
         debug: false,
     });
 
-    // When the number of file matches changes, we need to reset our scroll state.
-    const prevFileMatches = usePrevious(fileMatches);
-    useEffect(() => {
-        if (!prevFileMatches) {
-            return;
-        }
-
-        if (prevFileMatches.length !== fileMatches.length) {
+    const resetScroll = useCallback(() => {
         setShowAllMatchesStates(Array(fileMatches.length).fill(false));
         virtualizer.scrollToIndex(0);
-        }
-    }, [fileMatches.length, prevFileMatches, virtualizer]);
+    }, [fileMatches.length, virtualizer]);
+
+    // Expose the resetScroll function to parent components
+    useImperativeHandle(ref, () => ({
+        resetScroll,
+    }), [resetScroll]);
+
 
     // Save the scroll state to the history stack.
     const debouncedScrollOffset = useDebounce(virtualizer.scrollOffset, 100);
@@ -177,4 +179,6 @@ export const SearchResultsPanel = ({
             )}
         </div>
     )
-}
+});
+
+SearchResultsPanel.displayName = 'SearchResultsPanel';