From 9c7de97350eaf87428ad204ebfddeb21b767d33a Mon Sep 17 00:00:00 2001
From: Anan Zhuang <ananzh@amazon.com>
Date: Sun, 3 Mar 2024 18:47:32 -0800
Subject: [PATCH] [BUG][Discover] Enable 'Back to Top' Feature in Discover for
 scrolling to top (#6008)

* [BUG][Discover] Enable 'Back to Top' Feature in Discover for scrolling to top

dscCanvas is the one with scrollable prop. Set window.scrollTo(0, 0) on table will
not work. In this PR, we add a ref to EuiPanel directly.

Issue Resolve:
https://github.com/opensearch-project/OpenSearch-Dashboards/issues/6006

---------

Signed-off-by: Anan Zhuang <ananzh@amazon.com>
Co-authored-by: Miki <amoo_miki@yahoo.com>
---
 .../application/components/data_grid/data_grid_table.tsx | 4 ++++
 .../default_discover_table/default_discover_table.tsx    | 4 +++-
 .../view_components/canvas/discover_table.tsx            | 5 +++--
 .../public/application/view_components/canvas/index.tsx  | 9 ++++++++-
 4 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/plugins/discover/public/application/components/data_grid/data_grid_table.tsx b/src/plugins/discover/public/application/components/data_grid/data_grid_table.tsx
index a0c1851e7716..d4b8de6ad211 100644
--- a/src/plugins/discover/public/application/components/data_grid/data_grid_table.tsx
+++ b/src/plugins/discover/public/application/components/data_grid/data_grid_table.tsx
@@ -46,6 +46,7 @@ export interface DataGridTableProps {
   isContextView?: boolean;
   isLoading?: boolean;
   showPagination?: boolean;
+  scrollToTop?: () => void;
 }
 
 export const DataGridTable = ({
@@ -67,6 +68,7 @@ export const DataGridTable = ({
   isContextView = false,
   isLoading = false,
   showPagination,
+  scrollToTop,
 }: DataGridTableProps) => {
   const services = getServices();
   const [inspectedHit, setInspectedHit] = useState<OpenSearchSearchHit | undefined>();
@@ -179,6 +181,7 @@ export const DataGridTable = ({
         isShortDots={isShortDots}
         hideTimeColumn={hideTimeColumn}
         defaultSortOrder={defaultSortOrder}
+        scrollToTop={scrollToTop}
       />
     ),
     [
@@ -197,6 +200,7 @@ export const DataGridTable = ({
       defaultSortOrder,
       hideTimeColumn,
       isShortDots,
+      scrollToTop,
     ]
   );
 
diff --git a/src/plugins/discover/public/application/components/default_discover_table/default_discover_table.tsx b/src/plugins/discover/public/application/components/default_discover_table/default_discover_table.tsx
index fe8092ed8c9c..d563f1c1d098 100644
--- a/src/plugins/discover/public/application/components/default_discover_table/default_discover_table.tsx
+++ b/src/plugins/discover/public/application/components/default_discover_table/default_discover_table.tsx
@@ -33,6 +33,7 @@ export interface DefaultDiscoverTableProps {
   hideTimeColumn: boolean;
   defaultSortOrder: SortDirection;
   showPagination?: boolean;
+  scrollToTop?: () => void;
 }
 
 export const LegacyDiscoverTable = ({
@@ -52,6 +53,7 @@ export const LegacyDiscoverTable = ({
   hideTimeColumn,
   defaultSortOrder,
   showPagination,
+  scrollToTop,
 }: DefaultDiscoverTableProps) => {
   const displayedColumns = getLegacyDisplayedColumns(
     columns,
@@ -173,7 +175,7 @@ export const LegacyDiscoverTable = ({
               values={{ sampleSize }}
             />
 
-            <EuiButtonEmpty onClick={() => window.scrollTo(0, 0)}>
+            <EuiButtonEmpty onClick={scrollToTop}>
               <FormattedMessage id="discover.backToTopLinkText" defaultMessage="Back to top." />
             </EuiButtonEmpty>
           </EuiCallOut>
diff --git a/src/plugins/discover/public/application/view_components/canvas/discover_table.tsx b/src/plugins/discover/public/application/view_components/canvas/discover_table.tsx
index 17f9f26e8b54..ccf82e4ccba0 100644
--- a/src/plugins/discover/public/application/view_components/canvas/discover_table.tsx
+++ b/src/plugins/discover/public/application/view_components/canvas/discover_table.tsx
@@ -12,7 +12,6 @@ import {
   addColumn,
   moveColumn,
   removeColumn,
-  reorderColumn,
   setColumns,
   setSort,
   useDispatch,
@@ -27,9 +26,10 @@ import { popularizeField } from '../../helpers/popularize_field';
 
 interface Props {
   rows?: OpenSearchSearchHit[];
+  scrollToTop?: () => void;
 }
 
-export const DiscoverTable = ({ rows }: Props) => {
+export const DiscoverTable = ({ rows, scrollToTop }: Props) => {
   const { services } = useOpenSearchDashboards<DiscoverViewServices>();
   const {
     uiSettings,
@@ -115,6 +115,7 @@ export const DiscoverTable = ({ rows }: Props) => {
       displayTimeColumn={displayTimeColumn}
       title={savedSearch?.id ? savedSearch.title : ''}
       description={savedSearch?.id ? savedSearch.description : ''}
+      scrollToTop={scrollToTop}
     />
   );
 };
diff --git a/src/plugins/discover/public/application/view_components/canvas/index.tsx b/src/plugins/discover/public/application/view_components/canvas/index.tsx
index e3efe878aa83..1c2681995f98 100644
--- a/src/plugins/discover/public/application/view_components/canvas/index.tsx
+++ b/src/plugins/discover/public/application/view_components/canvas/index.tsx
@@ -24,6 +24,7 @@ import './discover_canvas.scss';
 
 // eslint-disable-next-line import/no-default-export
 export default function DiscoverCanvas({ setHeaderActionMenu, history }: ViewProps) {
+  const panelRef = useRef<HTMLDivElement>(null);
   const { data$, refetch$, indexPattern } = useDiscoverContext();
   const {
     services: { uiSettings },
@@ -89,9 +90,15 @@ export default function DiscoverCanvas({ setHeaderActionMenu, history }: ViewPro
   }, [dispatch, filteredColumns, indexPattern]);
 
   const timeField = indexPattern?.timeFieldName ? indexPattern.timeFieldName : undefined;
+  const scrollToTop = () => {
+    if (panelRef.current) {
+      panelRef.current.scrollTop = 0;
+    }
+  };
 
   return (
     <EuiPanel
+      panelRef={panelRef}
       hasBorder={false}
       hasShadow={false}
       color="transparent"
@@ -114,7 +121,7 @@ export default function DiscoverCanvas({ setHeaderActionMenu, history }: ViewPro
       {fetchState.status === ResultStatus.READY && (
         <EuiPanel hasShadow={false} paddingSize="none" className="dscCanvas_results">
           <MemoizedDiscoverChartContainer {...fetchState} />
-          <MemoizedDiscoverTable rows={rows} />
+          <MemoizedDiscoverTable rows={rows} scrollToTop={scrollToTop} />
         </EuiPanel>
       )}
     </EuiPanel>