fix dashboard grid item performs 2 DOM queries every render

.github/CODEOWNERS

@@ -193,6 +193,7 @@ packages/core/plugins/core-plugins-server-mocks @elastic/kibana-core
 packages/core/preboot/core-preboot-server @elastic/kibana-core
 packages/core/preboot/core-preboot-server-internal @elastic/kibana-core
 packages/core/preboot/core-preboot-server-mocks @elastic/kibana-core
+packages/core/rendering/core-rendering-browser @elastic/kibana-core
 packages/core/rendering/core-rendering-browser-internal @elastic/kibana-core
 packages/core/rendering/core-rendering-browser-mocks @elastic/kibana-core
 packages/core/rendering/core-rendering-server-internal @elastic/kibana-core

package.json

@@ -360,6 +360,7 @@
     "@kbn/core-preboot-server": "link:packages/core/preboot/core-preboot-server",
     "@kbn/core-preboot-server-internal": "link:packages/core/preboot/core-preboot-server-internal",
     "@kbn/core-provider-plugin": "link:test/plugin_functional/plugins/core_provider_plugin",
+    "@kbn/core-rendering-browser": "link:packages/core/rendering/core-rendering-browser",
     "@kbn/core-rendering-browser-internal": "link:packages/core/rendering/core-rendering-browser-internal",
     "@kbn/core-rendering-server-internal": "link:packages/core/rendering/core-rendering-server-internal",
     "@kbn/core-root-browser-internal": "link:packages/core/root/core-root-browser-internal",

packages/core/rendering/core-rendering-browser-internal/src/rendering_service.tsx

@@ -18,6 +18,7 @@ import type { I18nStart } from '@kbn/core-i18n-browser';
 import type { OverlayStart } from '@kbn/core-overlays-browser';
 import type { ThemeServiceStart } from '@kbn/core-theme-browser';
 import { KibanaRootContextProvider } from '@kbn/react-kibana-context-root';
+import { APP_FIXED_VIEWPORT_ID } from '@kbn/core-rendering-browser';
 import { AppWrapper } from './app_containers';
 
 interface StartServices {
@@ -68,7 +69,7 @@ export class RenderingService {
           {/* The App Wrapper outside of the fixed headers that accepts custom class names from apps */}
           <AppWrapper chromeVisible$={chrome.getIsVisible$()}>
             {/* Affixes a div to restrict the position of charts tooltip to the visible viewport minus the header */}
-            <div id="app-fixed-viewport" />
+            <div id={APP_FIXED_VIEWPORT_ID} />
 
             {/* The actual plugin/app */}
             {appComponent}

packages/core/rendering/core-rendering-browser-internal/tsconfig.json

@@ -26,7 +26,8 @@
     "@kbn/core-analytics-browser-mocks",
     "@kbn/core-analytics-browser",
     "@kbn/core-i18n-browser",
-    "@kbn/core-theme-browser"
+    "@kbn/core-theme-browser",
+    "@kbn/core-rendering-browser"
   ],
   "exclude": [
     "target/**/*",

packages/core/rendering/core-rendering-browser/README.md

@@ -0,0 +1,4 @@
+# @kbn/core-rendering-browser
+
+This package contains the types and implementation for Core's browser-side rendering service.
+

packages/core/rendering/core-rendering-browser/index.ts

@@ -0,0 +1,10 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+export { APP_FIXED_VIEWPORT_ID, useAppFixedViewport } from './src';

packages/core/rendering/core-rendering-browser/jest.config.js

@@ -0,0 +1,14 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../../../..',
+  roots: ['<rootDir>/packages/core/rendering/core-rendering-browser'],
+};

packages/core/rendering/core-rendering-browser/kibana.jsonc

@@ -0,0 +1,5 @@
+{
+  "type": "shared-browser",
+  "id": "@kbn/core-rendering-browser",
+  "owner": "@elastic/kibana-core"
+}

packages/core/rendering/core-rendering-browser/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "@kbn/core-rendering-browser",
+  "private": true,
+  "version": "1.0.0",
+  "author": "Kibana Core",
+  "license": "Elastic License 2.0 OR AGPL-3.0-only OR SSPL-1.0"
+}

packages/core/rendering/core-rendering-browser/src/index.ts

@@ -0,0 +1,10 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+export { APP_FIXED_VIEWPORT_ID, useAppFixedViewport } from './use_app_fixed_viewport';

packages/core/rendering/core-rendering-browser/src/use_app_fixed_viewport.ts

@@ -0,0 +1,17 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+import { useRef } from 'react';
+
+export const APP_FIXED_VIEWPORT_ID = 'app-fixed-viewport';
+
+export function useAppFixedViewport() {
+  const ref = useRef(document.getElementById(APP_FIXED_VIEWPORT_ID) ?? undefined);
+  return ref.current;
+}

packages/core/rendering/core-rendering-browser/tsconfig.json

@@ -0,0 +1,19 @@
+{
+  "extends": "../../../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "target/types",
+    "types": [
+      "jest",
+      "node",
+      "react"
+    ]
+  },
+  "include": [
+    "**/*.ts",
+    "**/*.tsx",
+  ],
+  "kbn_references": [],
+  "exclude": [
+    "target/**/*",
+  ]
+}

src/plugins/chart_expressions/expression_partition_vis/public/components/partition_vis_component.tsx

@@ -41,6 +41,7 @@ import {
 } from '@kbn/expressions-plugin/public';
 import type { FieldFormat } from '@kbn/field-formats-plugin/common';
 import { getOverridesFor } from '@kbn/chart-expressions-common';
+import { useAppFixedViewport } from '@kbn/core-rendering-browser';
 import { consolidateMetricColumns } from '../../common/utils';
 import { DEFAULT_PERCENT_DECIMALS } from '../../common/constants';
 import {
@@ -385,7 +386,7 @@ const PartitionVisComponent = (props: PartitionVisComponentProps) => {
     [visType, visParams, containerDimensions, rescaleFactor, hasOpenedOnAggBasedEditor]
   );
 
-  const fixedViewPort = document.getElementById('app-fixed-viewport');
+  const fixedViewPort = useAppFixedViewport();
 
   const legendPosition = visParams.legendPosition ?? Position.Right;
 

src/plugins/chart_expressions/expression_partition_vis/tsconfig.json

@@ -30,6 +30,7 @@
     "@kbn/chart-expressions-common",
     "@kbn/cell-actions",
     "@kbn/react-kibana-context-render",
+    "@kbn/core-rendering-browser",
   ],
   "exclude": [
     "target/**/*",

src/plugins/chart_expressions/expression_xy/public/components/xy_chart.tsx

@@ -55,6 +55,7 @@ import {
 } from '@kbn/visualizations-plugin/common/constants';
 import { PersistedState } from '@kbn/visualizations-plugin/public';
 import { getOverridesFor, ChartSizeSpec } from '@kbn/chart-expressions-common';
+import { useAppFixedViewport } from '@kbn/core-rendering-browser';
 import type {
   FilterEvent,
   BrushEvent,
@@ -232,6 +233,7 @@ export function XYChart({
   const chartRef = useRef<Chart>(null);
   const chartBaseTheme = chartsThemeService.useChartsBaseTheme();
   const darkMode = chartsThemeService.useDarkMode();
+  const appFixedViewport = useAppFixedViewport();
   const filteredLayers = getFilteredLayers(layers);
   const layersById = filteredLayers.reduce<Record<string, CommonXYLayerConfig>>(
     (hashMap, layer) => ({ ...hashMap, [layer.layerId]: layer }),
@@ -767,7 +769,7 @@ export function XYChart({
       >
         <Chart ref={chartRef} {...getOverridesFor(overrides, 'chart')}>
           <Tooltip<Record<string, string | number>, XYChartSeriesIdentifier>
-            boundary={document.getElementById('app-fixed-viewport') ?? undefined}
+            boundary={appFixedViewport}
             headerFormatter={
               !args.detailedTooltip && xAxisColumn
                 ? ({ value }) => (

src/plugins/chart_expressions/expression_xy/tsconfig.json

@@ -35,6 +35,7 @@
     "@kbn/es-query",
     "@kbn/cell-actions",
     "@kbn/react-kibana-context-render",
+    "@kbn/core-rendering-browser",
   ],
   "exclude": [
     "target/**/*",

src/plugins/dashboard/public/dashboard_actions/filters_notification_popover.tsx

@@ -62,8 +62,7 @@ export function FiltersNotificationPopover({ api }: { api: FiltersNotificationAc
     }
   }, [api, setDisableEditButton]);
 
-  const [hasLockedHoverActions, dataViews, parentViewMode] = useBatchedOptionalPublishingSubjects(
-    api.hasLockedHoverActions$,
+  const [dataViews, parentViewMode] = useBatchedOptionalPublishingSubjects(
     api.parentApi?.dataViews,
     getViewModeSubject(api ?? undefined)
   );
@@ -77,7 +76,7 @@ export function FiltersNotificationPopover({ api }: { api: FiltersNotificationAc
           onClick={() => {
             setIsPopoverOpen(!isPopoverOpen);
             if (apiCanLockHoverActions(api)) {
-              api?.lockHoverActions(!hasLockedHoverActions);
+              api?.lockHoverActions(!api.hasLockedHoverActions$.value);
             }
           }}
           data-test-subj={`embeddablePanelNotification-${api.uuid}`}

src/plugins/dashboard/public/dashboard_container/component/grid/dashboard_grid.tsx

@@ -18,14 +18,21 @@ import { Layout, Responsive as ResponsiveReactGridLayout } from 'react-grid-layo
 import { ViewMode } from '@kbn/embeddable-plugin/public';
 
 import { useBatchedPublishingSubjects } from '@kbn/presentation-publishing';
+import { useAppFixedViewport } from '@kbn/core-rendering-browser';
 import { DashboardPanelState } from '../../../../common';
 import { DashboardGridItem } from './dashboard_grid_item';
 import { useDashboardGridSettings } from './use_dashboard_grid_settings';
 import { useDashboardApi } from '../../../dashboard_api/use_dashboard_api';
 import { getPanelLayoutsAreEqual } from '../../state/diffing/dashboard_diffing_utils';
 import { DASHBOARD_GRID_HEIGHT, DASHBOARD_MARGIN_SIZE } from '../../../dashboard_constants';
 
-export const DashboardGrid = ({ viewportWidth }: { viewportWidth: number }) => {
+export const DashboardGrid = ({
+  dashboardContainer,
+  viewportWidth,
+}: {
+  dashboardContainer?: HTMLElement;
+  viewportWidth: number;
+}) => {
   const dashboardApi = useDashboardApi();
 
   const [animatePanelTransforms, expandedPanelId, focusedPanelId, panels, useMargins, viewMode] =
@@ -51,6 +58,8 @@ export const DashboardGrid = ({ viewportWidth }: { viewportWidth: number }) => {
     }
   }, [expandedPanelId]);
 
+  const appFixedViewport = useAppFixedViewport();
+
   const panelsInOrder: string[] = useMemo(() => {
     return Object.keys(panels).sort((embeddableIdA, embeddableIdB) => {
       const panelA = panels[embeddableIdA];
@@ -72,6 +81,8 @@ export const DashboardGrid = ({ viewportWidth }: { viewportWidth: number }) => {
       const type = panels[embeddableId].type;
       return (
         <DashboardGridItem
+          appFixedViewport={appFixedViewport}
+          dashboardContainer={dashboardContainer}
           data-grid={panels[embeddableId].gridData}
           key={embeddableId}
           id={embeddableId}
@@ -82,7 +93,14 @@ export const DashboardGrid = ({ viewportWidth }: { viewportWidth: number }) => {
         />
       );
     });
-  }, [expandedPanelId, panels, panelsInOrder, focusedPanelId]);
+  }, [
+    appFixedViewport,
+    dashboardContainer,
+    expandedPanelId,
+    panels,
+    panelsInOrder,
+    focusedPanelId,
+  ]);
 
   const onLayoutChange = useCallback(
     (newLayout: Array<Layout & { i: string }>) => {

src/plugins/dashboard/public/dashboard_container/component/grid/dashboard_grid_item.tsx

@@ -23,6 +23,8 @@ import { embeddableService, presentationUtilService } from '../../../services/ki
 type DivProps = Pick<React.HTMLAttributes<HTMLDivElement>, 'className' | 'style' | 'children'>;
 
 export interface Props extends DivProps {
+  appFixedViewport?: HTMLElement;
+  dashboardContainer?: HTMLElement;
   id: DashboardPanelState['explicitInput']['id'];
   index?: number;
   type: DashboardPanelState['type'];
@@ -35,6 +37,8 @@ export interface Props extends DivProps {
 export const Item = React.forwardRef<HTMLDivElement, Props>(
   (
     {
+      appFixedViewport,
+      dashboardContainer,
       expandedPanelId,
       focusedPanelId,
       id,
@@ -92,10 +96,8 @@ export const Item = React.forwardRef<HTMLDivElement, Props>(
       }
     }, [id, dashboardApi, scrollToPanelId, highlightPanelId, ref, blurPanel]);
 
-    const dashboardContainerTopOffset =
-      (document.querySelector('.dashboardContainer') as HTMLDivElement)?.offsetTop || 0;
-    const globalNavTopOffset =
-      (document.querySelector('#app-fixed-viewport') as HTMLDivElement)?.offsetTop || 0;
+    const dashboardContainerTopOffset = dashboardContainer?.offsetTop || 0;
+    const globalNavTopOffset = appFixedViewport?.offsetTop || 0;
 
     const focusStyles = blurPanel
       ? css`

src/plugins/dashboard/public/dashboard_container/component/viewport/dashboard_viewport.tsx

@@ -41,7 +41,7 @@ export const useDebouncedWidthObserver = (skipDebounce = false, wait = 100) => {
   return { ref, width };
 };
 
-export const DashboardViewport = () => {
+export const DashboardViewport = ({ dashboardContainer }: { dashboardContainer?: HTMLElement }) => {
   const dashboardApi = useDashboardApi();
   const [hasControls, setHasControls] = useState(false);
   const [
@@ -160,7 +160,9 @@ export const DashboardViewport = () => {
             otherwise, there is a race condition where the panels can end up being squashed 
             TODO only render when dashboardInitialized
         */}
-        {viewportWidth !== 0 && <DashboardGrid viewportWidth={viewportWidth} />}
+        {viewportWidth !== 0 && (
+          <DashboardGrid dashboardContainer={dashboardContainer} viewportWidth={viewportWidth} />
+        )}
       </div>
     </div>
   );

src/plugins/dashboard/public/dashboard_container/embeddable/dashboard_container.tsx

@@ -470,7 +470,7 @@ export class DashboardContainer
           coreStart={{ chrome: coreServices.chrome, customBranding: coreServices.customBranding }}
         >
           <DashboardContext.Provider value={this as DashboardApi}>
-            <DashboardViewport />
+            <DashboardViewport dashboardContainer={this.domNode} />
           </DashboardContext.Provider>
         </ExitFullScreenButtonKibanaProvider>
       </KibanaRenderContextProvider>,

src/plugins/dashboard/tsconfig.json

@@ -81,6 +81,7 @@
     "@kbn/core-custom-branding-browser-mocks",
     "@kbn/core-mount-utils-browser",
     "@kbn/visualization-utils",
+    "@kbn/core-rendering-browser",
   ],
   "exclude": ["target/**/*"]
 }

tsconfig.base.json

@@ -542,6 +542,8 @@
       "@kbn/core-preboot-server-mocks/*": ["packages/core/preboot/core-preboot-server-mocks/*"],
       "@kbn/core-provider-plugin": ["test/plugin_functional/plugins/core_provider_plugin"],
       "@kbn/core-provider-plugin/*": ["test/plugin_functional/plugins/core_provider_plugin/*"],
+      "@kbn/core-rendering-browser": ["packages/core/rendering/core-rendering-browser"],
+      "@kbn/core-rendering-browser/*": ["packages/core/rendering/core-rendering-browser/*"],
       "@kbn/core-rendering-browser-internal": ["packages/core/rendering/core-rendering-browser-internal"],
       "@kbn/core-rendering-browser-internal/*": ["packages/core/rendering/core-rendering-browser-internal/*"],
       "@kbn/core-rendering-browser-mocks": ["packages/core/rendering/core-rendering-browser-mocks"],

x-pack/plugins/observability_solution/synthetics/public/apps/synthetics/components/step_details_page/step_waterfall_chart/waterfall/waterfall_bar_chart.tsx

@@ -22,6 +22,7 @@ import {
 } from '@elastic/charts';
 import { useEuiTheme } from '@elastic/eui';
 import { i18n } from '@kbn/i18n';
+import { useAppFixedViewport } from '@kbn/core-rendering-browser';
 import { useBaseChartTheme } from '../../../../../../hooks/use_base_chart_theme';
 import { BAR_HEIGHT } from './constants';
 import { WaterfallChartChartContainer, WaterfallChartTooltip } from './styles';
@@ -86,6 +87,8 @@ export const WaterfallBarChart = ({
   const handleProjectionClick = useMemo(() => onProjectionClick, [onProjectionClick]);
   const memoizedTickFormat = useCallback(tickFormat, [tickFormat]);
 
+  const appFixedViewport = useAppFixedViewport();
+
   return (
     <WaterfallChartChartContainer
       height={getChartHeight(chartData)}
@@ -96,7 +99,7 @@ export const WaterfallBarChart = ({
         <Tooltip
           // this is done to prevent the waterfall tooltip from rendering behind Kibana's
           // stacked header when the user highlights an item at the top of the chart
-          boundary={document.getElementById('app-fixed-viewport') ?? undefined}
+          boundary={appFixedViewport}
           customTooltip={CustomTooltip}
         />
         <Settings

x-pack/plugins/observability_solution/synthetics/tsconfig.json

@@ -105,6 +105,7 @@
     "@kbn/ebt-tools",
     "@kbn/alerting-types",
     "@kbn/core-chrome-browser",
+    "@kbn/core-rendering-browser",
     "@kbn/index-lifecycle-management-common-shared"
   ],
   "exclude": ["target/**/*"]