From d089470bbfe4d2b5e691a774e137f9fee3cdc883 Mon Sep 17 00:00:00 2001
From: pengx17 <pengxiao@outlook.com>
Date: Fri, 6 Sep 2024 09:25:20 +0000
Subject: [PATCH] feat(electron): electron shell skeleton (#8127)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

fix AF-1331
<div class='graphite__hidden'>
          <div>🎥 Video uploaded on Graphite:</div>
            <a href="https://app.graphite.dev/media/video/T2klNLEk0wxLh4NRDzhk/e09203aa-f143-42f8-bd39-e5078d07ada2.mp4">
              <img src="https://app.graphite.dev/api/v1/graphite/video/thumbnail/T2klNLEk0wxLh4NRDzhk/e09203aa-f143-42f8-bd39-e5078d07ada2.mp4">
            </a>
          </div>
<video src="https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/T2klNLEk0wxLh4NRDzhk/e09203aa-f143-42f8-bd39-e5078d07ada2.mp4">1.mp4</video>

missing
- per split view skeleton
- per route skeleton
---
 .../component/src/ui/skeleton/index.css.ts    |   3 +-
 .../component/src/ui/skeleton/skeleton.tsx    |   2 +
 .../component/src/ui/skeleton/types.ts        |   5 +
 .../src/components/affine/app-container.tsx   |  15 ++-
 .../components/app-sidebar/fallback.css.ts    |  32 ++++-
 .../core/src/components/app-sidebar/index.tsx | 119 +++++++++++++-----
 .../src/components/root-app-sidebar/index.tsx |   7 +-
 .../src/components/workspace/index.css.ts     |   9 ++
 .../core/src/components/workspace/index.tsx   |   9 +-
 .../workbench/view/split-view/panel.tsx       |  16 ++-
 .../workbench/view/split-view/split-view.tsx  |  21 +++-
 .../core/src/pages/workspace/index.tsx        |   4 +-
 packages/frontend/electron/renderer/app.tsx   |   2 +-
 .../electron/renderer/shell/shell.css.ts      |  27 +++-
 .../electron/renderer/shell/shell.tsx         |   7 +-
 packages/frontend/mobile/src/app.tsx          |   2 +-
 .../mobile/src/pages/workspace/layout.tsx     |   2 +-
 17 files changed, 223 insertions(+), 59 deletions(-)

diff --git a/packages/frontend/component/src/ui/skeleton/index.css.ts b/packages/frontend/component/src/ui/skeleton/index.css.ts
index 8d46768464..84d7670d86 100644
--- a/packages/frontend/component/src/ui/skeleton/index.css.ts
+++ b/packages/frontend/component/src/ui/skeleton/index.css.ts
@@ -29,6 +29,7 @@ const waveKeyframes = keyframes({
 export const root = style({
   display: 'block',
   width: '100%',
+  maxWidth: '100%',
   height: defaultHeight,
   flexShrink: 0,
   /**
@@ -51,7 +52,7 @@ export const variant = {
     borderRadius: '50%',
   }),
   rectangular: style({
-    borderRadius: '0px',
+    borderRadius: '4px',
   }),
   rounded: style({
     borderRadius: '8px',
diff --git a/packages/frontend/component/src/ui/skeleton/skeleton.tsx b/packages/frontend/component/src/ui/skeleton/skeleton.tsx
index 404e9817a7..624a56df3f 100644
--- a/packages/frontend/component/src/ui/skeleton/skeleton.tsx
+++ b/packages/frontend/component/src/ui/skeleton/skeleton.tsx
@@ -16,6 +16,7 @@ export const Skeleton = ({
   variant = 'text',
   children,
 
+  flex,
   width: _width,
   height: _height,
   style: _style,
@@ -29,6 +30,7 @@ export const Skeleton = ({
   const style = {
     width,
     height,
+    flex,
     ..._style,
   };
 
diff --git a/packages/frontend/component/src/ui/skeleton/types.ts b/packages/frontend/component/src/ui/skeleton/types.ts
index bda6b78418..643cee5724 100644
--- a/packages/frontend/component/src/ui/skeleton/types.ts
+++ b/packages/frontend/component/src/ui/skeleton/types.ts
@@ -28,6 +28,11 @@ export interface SkeletonProps
    * Number values are treated as pixels.
    */
   height?: number | string;
+
+  /**
+   * Flex of the skeleton.
+   */
+  flex?: number | string;
 }
 
 export type PickStringFromUnion<T> = T extends string ? T : never;
diff --git a/packages/frontend/core/src/components/affine/app-container.tsx b/packages/frontend/core/src/components/affine/app-container.tsx
index fbac733a2d..3d4bc9386c 100644
--- a/packages/frontend/core/src/components/affine/app-container.tsx
+++ b/packages/frontend/core/src/components/affine/app-container.tsx
@@ -1,11 +1,11 @@
-import type { ReactElement } from 'react';
+import type { PropsWithChildren, ReactElement } from 'react';
 
 import { useAppSettingHelper } from '../../hooks/affine/use-app-setting-helper';
 import { AppSidebarFallback } from '../app-sidebar';
 import type { WorkspaceRootProps } from '../workspace';
 import {
   AppContainer as AppContainerWithoutSettings,
-  MainContainer,
+  MainContainerFallback,
 } from '../workspace';
 
 export const AppContainer = (props: WorkspaceRootProps) => {
@@ -24,11 +24,16 @@ export const AppContainer = (props: WorkspaceRootProps) => {
   );
 };
 
-export const AppFallback = (): ReactElement => {
+export const AppFallback = ({
+  className,
+  children,
+}: PropsWithChildren<{
+  className?: string;
+}>): ReactElement => {
   return (
-    <AppContainer>
+    <AppContainer className={className}>
       <AppSidebarFallback />
-      <MainContainer />
+      <MainContainerFallback>{children}</MainContainerFallback>
     </AppContainer>
   );
 };
diff --git a/packages/frontend/core/src/components/app-sidebar/fallback.css.ts b/packages/frontend/core/src/components/app-sidebar/fallback.css.ts
index 046413fa68..87c48fbcc3 100644
--- a/packages/frontend/core/src/components/app-sidebar/fallback.css.ts
+++ b/packages/frontend/core/src/components/app-sidebar/fallback.css.ts
@@ -1,12 +1,38 @@
 import { style } from '@vanilla-extract/css';
-export const fallbackStyle = style({
-  margin: '4px 16px',
+
+export const fallback = style({
+  padding: '4px 20px',
   height: '100%',
+  overflow: 'clip',
 });
-export const fallbackHeaderStyle = style({
+
+export const fallbackHeader = style({
   width: '100%',
   display: 'flex',
   alignItems: 'center',
   flexDirection: 'row',
   gap: '8px',
+  overflow: 'hidden',
+  height: '52px',
+});
+
+export const spacer = style({
+  flex: 1,
+});
+
+export const fallbackBody = style({
+  display: 'flex',
+  flexDirection: 'column',
+  gap: '42px',
+  marginTop: '42px',
+});
+
+export const fallbackGroupItems = style({
+  display: 'flex',
+  flexDirection: 'column',
+  gap: '16px',
+});
+
+export const fallbackItemHeader = style({
+  transform: 'translateX(-10px)',
 });
diff --git a/packages/frontend/core/src/components/app-sidebar/index.tsx b/packages/frontend/core/src/components/app-sidebar/index.tsx
index cf544aeeda..31f5c46e7b 100644
--- a/packages/frontend/core/src/components/app-sidebar/index.tsx
+++ b/packages/frontend/core/src/components/app-sidebar/index.tsx
@@ -1,13 +1,15 @@
 import { Skeleton } from '@affine/component';
 import { ResizePanel } from '@affine/component/resize-panel';
+import { useAppSettingHelper } from '@affine/core/hooks/affine/use-app-setting-helper';
+import { NavigateContext } from '@affine/core/hooks/use-navigate-helper';
 import { useServiceOptional, WorkspaceService } from '@toeverything/infra';
 import { useAtom, useAtomValue } from 'jotai';
 import { debounce } from 'lodash-es';
 import type { PropsWithChildren, ReactElement } from 'react';
-import { useEffect } from 'react';
+import { useContext, useEffect, useMemo } from 'react';
 
 import { WorkspaceNavigator } from '../workspace-selector';
-import { fallbackHeaderStyle, fallbackStyle } from './fallback.css';
+import * as styles from './fallback.css';
 import {
   floatingMaxWidth,
   navBodyStyle,
@@ -25,11 +27,6 @@ import {
 } from './index.jotai';
 import { SidebarHeader } from './sidebar-header';
 
-export type AppSidebarProps = PropsWithChildren<{
-  clientBorder?: boolean;
-  translucentUI?: boolean;
-}>;
-
 export type History = {
   stack: string[];
   current: number;
@@ -38,10 +35,11 @@ export type History = {
 const MAX_WIDTH = 480;
 const MIN_WIDTH = 248;
 
-export function AppSidebar({
-  children,
-  clientBorder,
-}: AppSidebarProps): ReactElement {
+export function AppSidebar({ children }: PropsWithChildren) {
+  const { appSettings } = useAppSettingHelper();
+
+  const clientBorder = appSettings.clientBorder;
+
   const [open, setOpen] = useAtom(appSidebarOpenAtom);
   const [width, setWidth] = useAtom(appSidebarWidthAtom);
   const [floating, setFloating] = useAtom(appSidebarFloatingAtom);
@@ -122,35 +120,96 @@ export function AppSidebar({
   );
 }
 
-export const AppSidebarFallback = (): ReactElement | null => {
-  const width = useAtomValue(appSidebarWidthAtom);
+const FallbackHeader = () => {
+  // if navigate is not defined, it is rendered outside of router
+  // WorkspaceNavigator requires navigate context
+  // todo: refactor
+  const navigate = useContext(NavigateContext);
 
   const currentWorkspace = useServiceOptional(WorkspaceService);
+  return (
+    <div className={styles.fallbackHeader}>
+      {!currentWorkspace && navigate ? (
+        <WorkspaceNavigator
+          showSettingsButton
+          showSyncStatus
+          showEnableCloudButton
+        />
+      ) : (
+        <>
+          <Skeleton variant="rectangular" width={32} height={32} />
+          <Skeleton variant="rectangular" width={150} height={32} flex={1} />
+          <Skeleton variant="circular" width={25} height={25} />
+        </>
+      )}
+    </div>
+  );
+};
+
+const randomWidth = () => {
+  return Math.floor(Math.random() * 200) + 100;
+};
+
+const RandomBar = ({ className }: { className?: string }) => {
+  const width = useMemo(() => randomWidth(), []);
+  return (
+    <Skeleton
+      variant="rectangular"
+      width={width}
+      height={16}
+      className={className}
+    />
+  );
+};
+
+const RandomBars = ({ count, header }: { count: number; header?: boolean }) => {
+  return (
+    <div className={styles.fallbackGroupItems}>
+      {header ? (
+        <Skeleton
+          className={styles.fallbackItemHeader}
+          variant="rectangular"
+          width={50}
+          height={16}
+        />
+      ) : null}
+      {Array.from({ length: count }).map((_, index) => (
+        <RandomBar key={index} />
+      ))}
+    </div>
+  );
+};
+
+const FallbackBody = () => {
+  return (
+    <div className={styles.fallbackBody}>
+      <RandomBars count={3} />
+      <RandomBars count={4} header />
+      <RandomBars count={4} header />
+      <RandomBars count={3} header />
+    </div>
+  );
+};
+
+export const AppSidebarFallback = (): ReactElement | null => {
+  const width = useAtomValue(appSidebarWidthAtom);
+  const { appSettings } = useAppSettingHelper();
+  const clientBorder = appSettings.clientBorder;
+  const hasRightBorder = !environment.isElectron && !clientBorder;
+
   return (
     <div
       style={{ width }}
       className={navWrapperStyle}
-      data-has-border
+      data-has-border={hasRightBorder}
       data-open="true"
     >
       <nav className={navStyle}>
-        <div className={navHeaderStyle} data-open="true" />
+        {!environment.isElectron ? <div className={navHeaderStyle} /> : null}
         <div className={navBodyStyle}>
-          <div className={fallbackStyle}>
-            <div className={fallbackHeaderStyle}>
-              {currentWorkspace ? (
-                <WorkspaceNavigator
-                  showSettingsButton
-                  showSyncStatus
-                  showEnableCloudButton
-                />
-              ) : (
-                <>
-                  <Skeleton variant="circular" width={40} height={40} />
-                  <Skeleton variant="rectangular" width={150} height={40} />
-                </>
-              )}
-            </div>
+          <div className={styles.fallback}>
+            <FallbackHeader />
+            <FallbackBody />
           </div>
         </div>
       </nav>
diff --git a/packages/frontend/core/src/components/root-app-sidebar/index.tsx b/packages/frontend/core/src/components/root-app-sidebar/index.tsx
index ca10e2ef94..cedc6e6d52 100644
--- a/packages/frontend/core/src/components/root-app-sidebar/index.tsx
+++ b/packages/frontend/core/src/components/root-app-sidebar/index.tsx
@@ -29,7 +29,6 @@ import { useSetAtom } from 'jotai';
 import type { MouseEvent, ReactElement } from 'react';
 import { useCallback, useEffect } from 'react';
 
-import { useAppSettingHelper } from '../../hooks/affine/use-app-setting-helper';
 import { WorkbenchService } from '../../modules/workbench';
 import {
   AddPageButton,
@@ -84,7 +83,6 @@ export const RootAppSidebar = (): ReactElement => {
       CMDKQuickSearchService,
     });
   const currentWorkspace = workspaceService.workspace;
-  const { appSettings } = useAppSettingHelper();
   const docCollection = currentWorkspace.docCollection;
   const t = useI18n();
   const workbench = workbenchService.workbench;
@@ -141,10 +139,7 @@ export const RootAppSidebar = (): ReactElement => {
   }, [setOpenSettingModalAtom]);
 
   return (
-    <AppSidebar
-      clientBorder={appSettings.clientBorder}
-      translucentUI={appSettings.enableBlurBackground}
-    >
+    <AppSidebar>
       <SidebarContainer>
         <div className={workspaceAndUserWrapper}>
           <div className={workspaceWrapper}>
diff --git a/packages/frontend/core/src/components/workspace/index.css.ts b/packages/frontend/core/src/components/workspace/index.css.ts
index 721bffcd56..c789518b04 100644
--- a/packages/frontend/core/src/components/workspace/index.css.ts
+++ b/packages/frontend/core/src/components/workspace/index.css.ts
@@ -1,5 +1,6 @@
 import { cssVar, lightCssVariables } from '@toeverything/theme';
 import { globalStyle, style } from '@vanilla-extract/css';
+
 export const appStyle = style({
   width: '100%',
   position: 'relative',
@@ -98,3 +99,11 @@ export const toolStyle = style({
     },
   },
 });
+
+export const fallbackRootStyle = style({
+  paddingTop: 52,
+  display: 'flex',
+  flex: 1,
+  width: '100%',
+  height: '100%',
+});
diff --git a/packages/frontend/core/src/components/workspace/index.tsx b/packages/frontend/core/src/components/workspace/index.tsx
index de6aa8517d..c71602176b 100644
--- a/packages/frontend/core/src/components/workspace/index.tsx
+++ b/packages/frontend/core/src/components/workspace/index.tsx
@@ -15,6 +15,7 @@ import { appStyle, mainContainerStyle, toolStyle } from './index.css';
 
 export type WorkspaceRootProps = PropsWithChildren<{
   resizing?: boolean;
+  className?: string;
   useNoisyBackground?: boolean;
   useBlurBackground?: boolean;
 }>;
@@ -24,6 +25,7 @@ export const AppContainer = ({
   useNoisyBackground,
   useBlurBackground,
   children,
+  className,
   ...rest
 }: WorkspaceRootProps) => {
   const noisyBackground = useNoisyBackground && environment.isElectron;
@@ -31,7 +33,7 @@ export const AppContainer = ({
   return (
     <div
       {...rest}
-      className={clsx(appStyle, {
+      className={clsx(appStyle, className, {
         'noisy-background': noisyBackground,
         'blur-background': blurBackground,
       })}
@@ -71,6 +73,11 @@ export const MainContainer = forwardRef<
 
 MainContainer.displayName = 'MainContainer';
 
+export const MainContainerFallback = ({ children }: PropsWithChildren) => {
+  // todo: default app fallback?
+  return <MainContainer>{children}</MainContainer>;
+};
+
 export const ToolContainer = (
   props: PropsWithChildren<{ className?: string }>
 ): ReactElement => {
diff --git a/packages/frontend/core/src/modules/workbench/view/split-view/panel.tsx b/packages/frontend/core/src/modules/workbench/view/split-view/panel.tsx
index 3760686108..8a8390f015 100644
--- a/packages/frontend/core/src/modules/workbench/view/split-view/panel.tsx
+++ b/packages/frontend/core/src/modules/workbench/view/split-view/panel.tsx
@@ -39,6 +39,17 @@ export interface SplitViewPanelProps
   >;
 }
 
+export const SplitViewPanelContainer = ({
+  children,
+  ...props
+}: HTMLAttributes<HTMLDivElement>) => {
+  return (
+    <div className={styles.splitViewPanel} {...props}>
+      {children}
+    </div>
+  );
+};
+
 export const SplitViewPanel = memo(function SplitViewPanel({
   children,
   view,
@@ -85,9 +96,8 @@ export const SplitViewPanel = memo(function SplitViewPanel({
   );
 
   return (
-    <div
+    <SplitViewPanelContainer
       style={style}
-      className={styles.splitViewPanel}
       data-is-dragging={isDragging}
       data-is-active={isActive && views.length > 1}
       data-is-last={isLast}
@@ -110,7 +120,7 @@ export const SplitViewPanel = memo(function SplitViewPanel({
         ) : null}
       </div>
       {children}
-    </div>
+    </SplitViewPanelContainer>
   );
 });
 
diff --git a/packages/frontend/core/src/modules/workbench/view/split-view/split-view.tsx b/packages/frontend/core/src/modules/workbench/view/split-view/split-view.tsx
index 4239907f70..9c41763bad 100644
--- a/packages/frontend/core/src/modules/workbench/view/split-view/split-view.tsx
+++ b/packages/frontend/core/src/modules/workbench/view/split-view/split-view.tsx
@@ -13,13 +13,13 @@ import {
 } from '@dnd-kit/sortable';
 import { useService } from '@toeverything/infra';
 import clsx from 'clsx';
-import type { HTMLAttributes, RefObject } from 'react';
+import type { HTMLAttributes, PropsWithChildren, RefObject } from 'react';
 import { useCallback, useMemo, useRef, useState } from 'react';
 import { createPortal } from 'react-dom';
 
 import type { View } from '../../entities/view';
 import { WorkbenchService } from '../../services/workbench';
-import { SplitViewPanel } from './panel';
+import { SplitViewPanel, SplitViewPanelContainer } from './panel';
 import { ResizeHandle } from './resize-handle';
 import * as styles from './split-view.css';
 
@@ -141,3 +141,20 @@ export const SplitView = ({
     </div>
   );
 };
+
+export const SplitViewFallback = ({
+  children,
+  className,
+}: PropsWithChildren<{ className?: string }>) => {
+  const { appSettings } = useAppSettingHelper();
+
+  return (
+    <div
+      className={clsx(styles.splitViewRoot, className)}
+      data-client-border={appSettings.clientBorder}
+    >
+      {/* todo: support multiple split views */}
+      <SplitViewPanelContainer>{children}</SplitViewPanelContainer>
+    </div>
+  );
+};
diff --git a/packages/frontend/core/src/pages/workspace/index.tsx b/packages/frontend/core/src/pages/workspace/index.tsx
index 845a90697e..b26fa3738d 100644
--- a/packages/frontend/core/src/pages/workspace/index.tsx
+++ b/packages/frontend/core/src/pages/workspace/index.tsx
@@ -111,7 +111,7 @@ export const Component = (): ReactElement => {
     return <PageNotFound noPermission />;
   }
   if (!meta) {
-    return <AppFallback key="workspaceLoading" />;
+    return <AppFallback />;
   }
 
   return <WorkspacePage meta={meta} />;
@@ -204,7 +204,7 @@ const WorkspacePage = ({ meta }: { meta: WorkspaceMetadata }) => {
   if (!isRootDocReady) {
     return (
       <FrameworkScope scope={workspace.scope}>
-        <AppFallback key="workspaceLoading" />
+        <AppFallback />
       </FrameworkScope>
     );
   }
diff --git a/packages/frontend/electron/renderer/app.tsx b/packages/frontend/electron/renderer/app.tsx
index 64d770fbfa..59d1f1c27e 100644
--- a/packages/frontend/electron/renderer/app.tsx
+++ b/packages/frontend/electron/renderer/app.tsx
@@ -115,7 +115,7 @@ export function App() {
             <DebugProvider>
               <GlobalLoading />
               <RouterProvider
-                fallbackElement={<AppFallback key="RouterFallback" />}
+                fallbackElement={<AppFallback />}
                 router={router}
                 future={future}
               />
diff --git a/packages/frontend/electron/renderer/shell/shell.css.ts b/packages/frontend/electron/renderer/shell/shell.css.ts
index 44a8872602..f128873abd 100644
--- a/packages/frontend/electron/renderer/shell/shell.css.ts
+++ b/packages/frontend/electron/renderer/shell/shell.css.ts
@@ -1,4 +1,4 @@
-import { cssVar } from '@toeverything/theme';
+import { cssVarV2 } from '@toeverything/theme/v2';
 import { createVar, style } from '@vanilla-extract/css';
 
 export const sidebarOffsetVar = createVar();
@@ -7,10 +7,33 @@ export const root = style({
   width: '100vw',
   height: '100vh',
   display: 'flex',
-  background: cssVar('backgroundPrimaryColor'),
+  flexDirection: 'column',
+  background: cssVarV2('layer/background/primary'),
   selectors: {
     '&[data-translucent="true"]': {
       background: 'transparent',
     },
   },
 });
+
+export const appTabsHeader = style({
+  zIndex: 1,
+});
+
+export const fallbackRoot = style({
+  position: 'absolute',
+  paddingTop: 52,
+  width: '100%',
+  height: '100%',
+  zIndex: 0,
+});
+
+export const splitViewFallback = style({
+  width: '100%',
+  height: '100%',
+  position: 'absolute',
+  bottom: 0,
+  right: 0,
+  zIndex: 0,
+  background: cssVarV2('layer/background/primary'),
+});
diff --git a/packages/frontend/electron/renderer/shell/shell.tsx b/packages/frontend/electron/renderer/shell/shell.tsx
index 0bc3357e8e..88470d7129 100644
--- a/packages/frontend/electron/renderer/shell/shell.tsx
+++ b/packages/frontend/electron/renderer/shell/shell.tsx
@@ -1,5 +1,7 @@
+import { AppFallback } from '@affine/core/components/affine/app-container';
 import { useAppSettingHelper } from '@affine/core/hooks/affine/use-app-setting-helper';
 import { AppTabsHeader } from '@affine/core/modules/app-tabs-header';
+import { SplitViewFallback } from '@affine/core/modules/workbench/view/split-view/split-view';
 
 import * as styles from './shell.css';
 
@@ -11,7 +13,10 @@ export function ShellRoot() {
     appSettings.enableBlurBackground;
   return (
     <div className={styles.root} data-translucent={translucent}>
-      <AppTabsHeader mode="shell" />
+      <AppTabsHeader mode="shell" className={styles.appTabsHeader} />
+      <AppFallback className={styles.fallbackRoot}>
+        <SplitViewFallback className={styles.splitViewFallback} />
+      </AppFallback>
     </div>
   );
 }
diff --git a/packages/frontend/mobile/src/app.tsx b/packages/frontend/mobile/src/app.tsx
index edebbbb540..e4aa05c018 100644
--- a/packages/frontend/mobile/src/app.tsx
+++ b/packages/frontend/mobile/src/app.tsx
@@ -81,7 +81,7 @@ export function App() {
         <AffineContext store={getCurrentStore()}>
           <Telemetry />
           <RouterProvider
-            fallbackElement={<AppFallback key="RouterFallback" />}
+            fallbackElement={<AppFallback />}
             router={router}
             future={future}
           />
diff --git a/packages/frontend/mobile/src/pages/workspace/layout.tsx b/packages/frontend/mobile/src/pages/workspace/layout.tsx
index 5725752c98..5f79fd9809 100644
--- a/packages/frontend/mobile/src/pages/workspace/layout.tsx
+++ b/packages/frontend/mobile/src/pages/workspace/layout.tsx
@@ -70,7 +70,7 @@ export const WorkspaceLayout = ({
   if (!isRootDocReady) {
     return (
       <FrameworkScope scope={workspace.scope}>
-        <AppFallback key="workspaceLoading" />
+        <AppFallback />
       </FrameworkScope>
     );
   }