♻️(frontend) move table of content to right panel

We move the floating table of content to the
right panel. This allows us to have a more consistent
UI and to make room for the right sidebar.

src/frontend/apps/e2e/__tests__/app-impress/doc-table-content.spec.ts

@@ -1,6 +1,7 @@
 import { expect, test } from '@playwright/test';
 
-import { createDoc, verifyDocName } from './utils-common';
+import { createDoc } from './utils-common';
+import { tryFocusEditorContent } from './utils-editor';
 
 test.beforeEach(async ({ page }) => {
   await page.goto('/');
@@ -8,40 +9,58 @@ test.beforeEach(async ({ page }) => {
 
 test.describe('Doc Table Content', () => {
   test('it checks the doc table content', async ({ page, browserName }) => {
-    const [randomDoc] = await createDoc(
+    await createDoc(page, 'doc-table-content', browserName, 1);
-      page,
-      'doc-table-content',
-      browserName,
-      1,
-    );
-
-    await verifyDocName(page, randomDoc);
-
-    await page.locator('.ProseMirror').click();
 
     await expect(
-      page.getByRole('button', { name: 'Show the table of contents' }),
+      page.getByRole('button', { name: 'Show the table of contents sidebar' }),
     ).toBeHidden();
 
-    await page.keyboard.type('# Level 1\n## Level 2\n### Level 3');
+    const editor = await tryFocusEditorContent({ page });
+    await page.keyboard.type('# Level 1');
+    for (let i = 0; i < 20; i++) {
+      await page.keyboard.press('Enter');
+    }
+    await page.keyboard.type('## Level 2');
+    for (let i = 0; i < 20; i++) {
+      await page.keyboard.press('Enter');
+    }
+    await page.keyboard.type('### Level 3');
 
-    const summaryContainer = page.locator('#summaryContainer');
+    await page
-    await summaryContainer.click();
+      .getByRole('button', { name: 'Show the table of contents sidebar' })
+      .click();
 
-    const level1 = summaryContainer.getByText('Level 1');
+    const elSidePanel = page.getByLabel('Table of contents side panel');
-    const level2 = summaryContainer.getByText('Level 2');
+
-    const level3 = summaryContainer.getByText('Level 3');
+    const level1 = elSidePanel.getByText('Level 1');
+    const editorLevel1 = editor.getByText('Level 1');
+    const level2 = elSidePanel.getByText('Level 2');
+    const editorLevel2 = editor.getByText('Level 2');
+    const level3 = elSidePanel.getByText('Level 3');
 
     await expect(level1).toBeVisible();
-    await expect(level1).toHaveCSS('padding', /4px 0px/);
+    await expect(level1).toHaveCSS('padding', /0px 0px 0px 8px/);
-    await expect(level1).toHaveAttribute('aria-selected', 'true');
+    await expect(editorLevel1).not.toBeInViewport();
+    await expect(level1).toHaveAttribute('aria-selected', 'false');
 
     await expect(level2).toBeVisible();
     await expect(level2).toHaveCSS('padding-left', /14.4px/);
-    await expect(level2).toHaveAttribute('aria-selected', 'false');
+    await expect(editorLevel2).toBeInViewport();
+    await expect(level2).toHaveAttribute('aria-selected', 'true');
 
     await expect(level3).toBeVisible();
     await expect(level3).toHaveCSS('padding-left', /24px/);
     await expect(level3).toHaveAttribute('aria-selected', 'false');
+
+    await level1.click();
+    await expect(editorLevel1).toBeInViewport();
+    await expect(level1).toHaveAttribute('aria-selected', 'true');
+    await expect(level2).toHaveAttribute('aria-selected', 'false');
+
+    await level2.click();
+    await expect(editorLevel1).not.toBeInViewport();
+    await expect(editorLevel2).toBeInViewport();
+    await expect(level2).toHaveAttribute('aria-selected', 'true');
+    await expect(level1).toHaveAttribute('aria-selected', 'false');
   });
 });

src/frontend/apps/impress/src/assets/icons/ui-kit/bulleted-list.svg

@@ -0,0 +1,26 @@
+<svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <path
+    d="M3.00977 18C3.56205 18 4.00977 18.4477 4.00977 19C4.00977 19.5523 3.56205 20 3.00977 20H3C2.44772 20 2 19.5523 2 19C2 18.4477 2.44772 18 3 18H3.00977Z"
+    fill="currentColor"
+  />
+  <path
+    d="M21 18C21.5523 18 22 18.4477 22 19C22 19.5523 21.5523 20 21 20H8C7.44772 20 7 19.5523 7 19C7 18.4477 7.44772 18 8 18H21Z"
+    fill="currentColor"
+  />
+  <path
+    d="M3.00977 11C3.56205 11 4.00977 11.4477 4.00977 12C4.00977 12.5523 3.56205 13 3.00977 13H3C2.44772 13 2 12.5523 2 12C2 11.4477 2.44772 11 3 11H3.00977Z"
+    fill="currentColor"
+  />
+  <path
+    d="M21 11C21.5523 11 22 11.4477 22 12C22 12.5523 21.5523 13 21 13H8C7.44772 13 7 12.5523 7 12C7 11.4477 7.44772 11 8 11H21Z"
+    fill="currentColor"
+  />
+  <path
+    d="M3.00977 4C3.56205 4 4.00977 4.44772 4.00977 5C4.00977 5.55228 3.56205 6 3.00977 6H3C2.44772 6 2 5.55228 2 5C2 4.44772 2.44772 4 3 4H3.00977Z"
+    fill="currentColor"
+  />
+  <path
+    d="M21 4C21.5523 4 22 4.44772 22 5C22 5.55228 21.5523 6 21 6H8C7.44772 6 7 5.55228 7 5C7 4.44772 7.44772 4 8 4H21Z"
+    fill="currentColor"
+  />
+</svg>

src/frontend/apps/impress/src/features/docs/doc-editor/components/BlockNoteEditor.tsx

@@ -29,6 +29,7 @@ import { useConfig } from '@/core';
 import { useCunninghamTheme } from '@/cunningham';
 import { Doc } from '@/docs/doc-management';
 import { avatarUrlFromName, useAuth } from '@/features/auth';
+import { useRightPanelStore } from '@/features/right-panel/components/useRightPanelStore';
 import { useAnalytics } from '@/libs/Analytics';
 
 import { AI_FEATURE_FLAG, DEFAULT_LOCALE } from '../conf';
@@ -135,11 +136,10 @@ export const BlockNoteEditor = ({ doc, provider }: BlockNoteEditorProps) => {
   );
 
   // Comment sidebar
-  const {
+  const { threadsSidebarTarget, filter: threadsSidebarFilter } =
-    threadsSidebarTarget,
+    useCommentSidebarStore();
-    filter: threadsSidebarFilter,
+  const { activePanel, isPanelOpen } = useRightPanelStore();
-    isSideBarOpen,
+  const isCommentSideBarOpen = isPanelOpen && activePanel === 'comments';
-  } = useCommentSidebarStore();
 
   const currentUserAvatarUrl = useMemo(() => {
     if (canSeeComment) {
@@ -303,7 +303,7 @@ export const BlockNoteEditor = ({ doc, provider }: BlockNoteEditorProps) => {
         <BlockNoteSuggestionMenu aiAllowed={aiBlockNoteAllowed} />
         <BlockNoteToolbar aiAllowed={aiBlockNoteAllowed} />
         {showComments && <FloatingComposerController />}
-        {showComments && !isSideBarOpen && <FloatingThreadController />}
+        {showComments && !isCommentSideBarOpen && <FloatingThreadController />}
         {threadsSidebarTarget &&
           createPortal(
             <ThreadsSidebar

src/frontend/apps/impress/src/features/docs/doc-editor/components/DocEditor.tsx

@@ -11,7 +11,6 @@ import {
   useIsCollaborativeEditable,
   useProviderStore,
 } from '@/docs/doc-management';
-import { TableContent } from '@/docs/doc-table-content/';
 import { useAuth } from '@/features/auth/';
 import { SkeletonEditorCore, useSkeletonStore } from '@/features/skeletons';
 import { useSkeletonFadeOut } from '@/features/skeletons/hooks/useFadeOut';
@@ -86,7 +85,6 @@ interface DocEditorProps {
 
 export const DocEditor = ({ doc }: DocEditorProps) => {
   useCollaboration(doc.id);
-  const { isDesktop } = useResponsiveStore();
   const { isEditable, isLoading } = useIsCollaborativeEditable(doc);
   const isDeletedDoc = !!doc.deleted_at;
   const readOnly =
@@ -126,16 +124,13 @@ export const DocEditor = ({ doc }: DocEditorProps) => {
   }, [authenticated, hasTracked, isPublicDoc, trackEvent]);
 
   return (
-    <>
+    <DocEditorContainer
-      {isDesktop && <TableContent selector={`.${DOCS_EDITOR_CLASS}`} />}
+      docHeader={<DocHeader doc={doc} />}
-      <DocEditorContainer
+      isDeletedDoc={isDeletedDoc}
-        docHeader={<DocHeader doc={doc} />}
+      readOnly={readOnly}
-        isDeletedDoc={isDeletedDoc}
+    >
-        readOnly={readOnly}
+      <DocCoreEditor doc={doc} readOnly={readOnly} />
-      >
+    </DocEditorContainer>
-        <DocCoreEditor doc={doc} readOnly={readOnly} />
-      </DocEditorContainer>
-    </>
   );
 };
 

src/frontend/apps/impress/src/features/docs/doc-editor/components/comments/CommentSideBar.tsx

@@ -110,25 +110,28 @@ export const CommentSideBar = ({ onClose }: CommentSideBarProps) => {
 
 export const CommentSideBarButton = () => {
   const { t } = useTranslation();
-  const { isPanelOpen, togglePanel } = useRightPanelStore();
+  const { isPanelOpen, activePanel, setActivePanel, setIsPanelOpen } =
-  const { setIsSideBarOpen } = useCommentSidebarStore();
+    useRightPanelStore();
 
-  useEffect(() => {
+  const isActive = isPanelOpen && activePanel === 'comments';
-    setIsSideBarOpen(isPanelOpen);
+  const ariaLabel = isActive
-  }, [isPanelOpen, setIsSideBarOpen]);
-
-  const ariaLabel = isPanelOpen
     ? t('Hide the comments sidebar')
     : t('Show the comments sidebar');
 
   return (
     <Button
       size="small"
-      onClick={togglePanel}
+      onClick={() => {
+        if (isActive) {
+          setIsPanelOpen(false);
+        } else {
+          setActivePanel('comments');
+        }
+      }}
       aria-label={ariaLabel}
-      aria-expanded={isPanelOpen}
+      aria-expanded={isActive}
       color="neutral"
-      variant={isPanelOpen ? 'secondary' : 'tertiary'}
+      variant={isActive ? 'secondary' : 'tertiary'}
       icon={<CommentsIcon width={24} height={24} aria-hidden="true" />}
     ></Button>
   );

src/frontend/apps/impress/src/features/docs/doc-editor/components/comments/useCommentSidebarStore.ts

@@ -2,18 +2,14 @@ import { create } from 'zustand';
 
 interface CommentSidebarStore {
   filter: 'open' | 'resolved';
-  isSideBarOpen: boolean;
-  setIsSideBarOpen: (isSideBarOpen: boolean) => void;
-  setThreadsSidebarTarget: (el: HTMLElement | null) => void;
   setFilter: (filter: 'open' | 'resolved') => void;
+  setThreadsSidebarTarget: (el: HTMLElement | null) => void;
   threadsSidebarTarget: HTMLElement | null;
 }
 
 export const useCommentSidebarStore = create<CommentSidebarStore>((set) => ({
   filter: 'open',
-  isSideBarOpen: false,
   setFilter: (filter) => set(() => ({ filter })),
-  setIsSideBarOpen: (isSideBarOpen) => set(() => ({ isSideBarOpen })),
   setThreadsSidebarTarget: (threadsSidebarTarget) => {
     set(() => ({ threadsSidebarTarget }));
   },

src/frontend/apps/impress/src/features/docs/doc-editor/components/custom-inline-content/Interlinking/InterlinkingLinkInlineContent.tsx

@@ -5,9 +5,9 @@ import { TFunction } from 'i18next';
 import { useEffect } from 'react';
 import { validate as uuidValidate } from 'uuid';
 
-import { DocsBlockNoteEditor } from '@/docs/doc-editor';
 import LinkPageIcon from '@/docs/doc-editor/assets/doc-link.svg';
 import AddPageIcon from '@/docs/doc-editor/assets/doc-plus.svg';
+import { DocsBlockNoteEditor } from '@/docs/doc-editor/types';
 import { useCreateChildDocTree, useDocStore } from '@/docs/doc-management';
 
 import { LinkSelected } from './LinkSelected';

src/frontend/apps/impress/src/features/docs/doc-editor/hook/useHeadings.tsx

@@ -22,15 +22,9 @@ export const useHeadings = (editor: DocsBlockNoteEditor) => {
       timeoutId = setTimeout(() => {
         const blocksChanges = context.getChanges();
 
-        if (!blocksChanges.length) {
-          return;
-        }
-
-        const blockChanges = blocksChanges[0];
-
         if (
-          blockChanges.type !== 'update' ||
+          !blocksChanges.length ||
-          blockChanges.block.type !== 'heading'
+          !blocksChanges.find((change) => change.block.type === 'heading')
         ) {
           return;
         }

src/frontend/apps/impress/src/features/docs/doc-export/components/ModalExport.tsx

@@ -20,7 +20,7 @@ import { css } from 'styled-components';
 
 import { Box, ButtonCloseModal, Text } from '@/components';
 import { useMediaUrl } from '@/core';
-import { useEditorStore } from '@/docs/doc-editor';
+import { useEditorStore } from '@/docs/doc-editor/stores/useEditorStore';
 import { Doc, useTrans } from '@/docs/doc-management';
 import { fallbackLng } from '@/i18n/config';
 

src/frontend/apps/impress/src/features/docs/doc-table-content/components/Heading.tsx

@@ -3,13 +3,13 @@ import { css } from 'styled-components';
 
 import { BoxButton, Text } from '@/components';
 import { useCunninghamTheme } from '@/cunningham';
-import { DocsBlockNoteEditor } from '@/docs/doc-editor';
+import { DocsBlockNoteEditor } from '@/docs/doc-editor/types';
 import { useResponsiveStore } from '@/stores';
 
 const leftPaddingMap: { [key: number]: string } = {
   3: '1.5rem',
   2: '0.9rem',
-  1: '0.3rem',
+  1: 'xs',
 };
 
 export type HeadingsHighlight = {
@@ -40,7 +40,9 @@ export const Heading = ({
   return (
     <BoxButton
       id={`heading-${headingId}`}
+      className="--docs--table-content-heading"
       $width="100%"
+      $height="var(--c--globals--spacings--lg)"
       onMouseOver={() => setIsHover(true)}
       onMouseLeave={() => setIsHover(false)}
       onClick={() => {
@@ -62,9 +64,10 @@ export const Heading = ({
       $radius="var(--c--globals--spacings--st)"
       $background={
         isActive
-          ? 'var(--c--contextuals--background--semantic--neutral--secondary)'
+          ? 'var(--c--contextuals--background--semantic--overlay--primary)'
           : 'none'
       }
+      $justify="center"
       $css={css`
         text-align: left;
         &:focus-visible {
@@ -74,15 +77,14 @@ export const Heading = ({
           border-radius: var(--c--globals--spacings--st);
         }
       `}
-      className="--docs--table-content-heading"
       aria-label={text}
       aria-selected={isHighlight}
       aria-current={isHighlight ? 'true' : undefined}
     >
       <Text
-        $width="100%"
+        $size="sm"
-        $padding={{ vertical: 'xtiny', left: leftPaddingMap[level] }}
+        $padding={{ left: leftPaddingMap[level] }}
-        $weight={isHighlight ? 'bold' : 'normal'}
+        $weight={isHighlight ? '700' : '500'}
         $css="overflow-wrap: break-word;"
         $hasTransition
         aria-selected={isHighlight}

src/frontend/apps/impress/src/features/docs/doc-table-content/components/TableContent.tsx

@@ -1,284 +0,0 @@
-import { useEffect, useState } from 'react';
-import { useTranslation } from 'react-i18next';
-import { css } from 'styled-components';
-
-import { Box, BoxButton, Icon, Text } from '@/components';
-import { useCunninghamTheme } from '@/cunningham';
-import {
-  DocsBlockNoteEditor,
-  HeadingBlock,
-  useEditorStore,
-  useHeadingStore,
-} from '@/docs/doc-editor';
-import { MAIN_LAYOUT_ID } from '@/layouts/conf';
-
-import { Heading } from './Heading';
-
-export const TableContent = ({ selector }: { selector: string }) => {
-  const { spacingsTokens, colorsTokens } = useCunninghamTheme();
-  const [containerHeight, setContainerHeight] = useState('100vh');
-  const { headings } = useHeadingStore();
-  const { editor } = useEditorStore();
-
-  const { t } = useTranslation();
-  const [isOpen, setIsOpen] = useState(false);
-
-  /**
-   * Calculate container height based on the scrollable content
-   */
-  useEffect(() => {
-    const layout = document.querySelector<HTMLElement>(selector);
-    if (!layout) {
-      return;
-    }
-
-    let timeout: ReturnType<typeof setTimeout>;
-    const updateHeight = () => {
-      clearTimeout(timeout);
-      timeout = setTimeout(() => {
-        setContainerHeight(`${layout.scrollHeight}px`);
-      }, 300);
-    };
-
-    updateHeight();
-
-    const observer = new ResizeObserver(updateHeight);
-    observer.observe(layout);
-
-    return () => {
-      clearTimeout(timeout);
-      observer.disconnect();
-    };
-  }, [selector]);
-
-  const onOpen = () => {
-    setIsOpen(true);
-  };
-
-  if (
-    !editor ||
-    !headings ||
-    headings.length === 0 ||
-    (headings.length === 1 && !headings[0].contentText)
-  ) {
-    return null;
-  }
-
-  return (
-    <Box
-      $height={containerHeight}
-      $position="absolute"
-      $css={css`
-        top: 72px;
-        right: 20px;
-      `}
-    >
-      <Box
-        as="nav"
-        id="summaryContainer"
-        $width={!isOpen ? '40px' : '200px'}
-        $height={!isOpen ? '40px' : 'auto'}
-        $maxHeight="calc(50vh - 60px)"
-        $zIndex={1000}
-        $align="center"
-        $padding={isOpen ? 'xs' : '0'}
-        $justify="center"
-        $position="sticky"
-        aria-label={t('Summary')}
-        $css={css`
-          top: var(--c--globals--spacings--0);
-          border: 1px solid ${colorsTokens['brand-100']};
-          overflow: hidden;
-          border-radius: ${spacingsTokens['3xs']};
-          background: var(--c--contextuals--background--surface--primary);
-          ${isOpen &&
-          css`
-            display: flex;
-            flex-direction: column;
-            justify-content: flex-start;
-            align-items: flex-start;
-            gap: ${spacingsTokens['2xs']};
-          `}
-        `}
-        className="--docs--table-content"
-      >
-        {!isOpen && (
-          <BoxButton
-            onClick={onOpen}
-            $width="100%"
-            $height="100%"
-            $justify="center"
-            $align="center"
-            aria-label={t('Show the table of contents')}
-            aria-expanded={isOpen}
-            aria-controls="toc-list"
-            $css={css`
-              &:focus-visible {
-                outline: none;
-                box-shadow: 0 0 0 4px ${colorsTokens['brand-400']};
-                background: ${colorsTokens['brand-100']};
-                width: 90%;
-                height: 90%;
-              }
-            `}
-          >
-            <Icon
-              $theme="brand"
-              $variation="tertiary"
-              iconName="list"
-              variant="symbols-outlined"
-            />
-          </BoxButton>
-        )}
-        {isOpen && (
-          <TableContentOpened
-            setIsOpen={setIsOpen}
-            headings={headings}
-            editor={editor}
-          />
-        )}
-      </Box>
-    </Box>
-  );
-};
-
-const TableContentOpened = ({
-  setIsOpen,
-  headings,
-  editor,
-}: {
-  setIsOpen: (isOpen: boolean) => void;
-  headings: HeadingBlock[];
-  editor: DocsBlockNoteEditor;
-}) => {
-  const { spacingsTokens, colorsTokens } = useCunninghamTheme();
-  const [headingIdHighlight, setHeadingIdHighlight] = useState<string>();
-  const { t } = useTranslation();
-
-  /**
-   * Handle scroll to highlight the current heading in the table of content
-   */
-  useEffect(() => {
-    const handleScroll = () => {
-      if (!headings) {
-        return;
-      }
-
-      for (const heading of headings) {
-        const elHeading = document.body.querySelector(
-          `.bn-block-outer[data-id="${heading.id}"] [data-content-type="heading"]:first-child`,
-        );
-
-        if (!elHeading) {
-          return;
-        }
-
-        const rect = elHeading.getBoundingClientRect();
-        const isVisible =
-          rect.top + rect.height >= 1 &&
-          rect.bottom <=
-            (window.innerHeight || document.documentElement.clientHeight);
-
-        if (isVisible) {
-          setHeadingIdHighlight(heading.id);
-          break;
-        }
-      }
-    };
-
-    let timeout: NodeJS.Timeout;
-    const scrollFn = () => {
-      if (timeout) {
-        clearTimeout(timeout);
-      }
-
-      timeout = setTimeout(() => {
-        handleScroll();
-      }, 300);
-    };
-
-    document
-      .getElementById(MAIN_LAYOUT_ID)
-      ?.addEventListener('scroll', scrollFn);
-
-    handleScroll();
-
-    return () => {
-      document
-        .getElementById(MAIN_LAYOUT_ID)
-        ?.removeEventListener('scroll', scrollFn);
-    };
-  }, [headings]);
-
-  const onClose = () => {
-    setIsOpen(false);
-  };
-
-  return (
-    <Box
-      $width="100%"
-      $overflow="hidden"
-      $css={css`
-        user-select: none;
-        padding: ${spacingsTokens['4xs']};
-      `}
-    >
-      <Box
-        $margin={{ bottom: spacingsTokens.xs }}
-        $direction="row"
-        $justify="space-between"
-        $align="center"
-      >
-        <Text $weight="500" $size="sm">
-          {t('Summary')}
-        </Text>
-        <BoxButton
-          onClick={onClose}
-          $justify="center"
-          $align="center"
-          aria-label={t('Hide the table of contents')}
-          aria-expanded={true}
-          aria-controls="toc-list"
-          $css={css`
-            transition: none !important;
-            transform: rotate(180deg);
-            &:focus-visible {
-              outline: none;
-              box-shadow: 0 0 0 2px ${colorsTokens['brand-400']};
-              border-radius: var(--c--globals--spacings--st);
-            }
-          `}
-        >
-          <Icon iconName="menu_open" $theme="brand" $variation="tertiary" />
-        </BoxButton>
-      </Box>
-      <Box
-        as="ul"
-        id="toc-list"
-        role="list"
-        $gap={spacingsTokens['3xs']}
-        $css={css`
-          overflow-y: auto;
-          list-style: none;
-          padding: ${spacingsTokens['3xs']};
-          margin: 0;
-        `}
-      >
-        {headings?.map(
-          (heading) =>
-            heading.contentText && (
-              <Box as="li" role="listitem" key={heading.id}>
-                <Heading
-                  editor={editor}
-                  headingId={heading.id}
-                  level={heading.props.level}
-                  text={heading.contentText}
-                  isHighlight={headingIdHighlight === heading.id}
-                />
-              </Box>
-            ),
-        )}
-      </Box>
-    </Box>
-  );
-};

src/frontend/apps/impress/src/features/docs/doc-table-content/components/TableContentSideBar.tsx

@@ -0,0 +1,166 @@
+import { Button } from '@gouvfr-lasuite/cunningham-react';
+import { useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { css } from 'styled-components';
+
+import TableContentIcon from '@/assets/icons/ui-kit/bulleted-list.svg';
+import { Box, ButtonCloseModal, Text } from '@/components';
+import { useCunninghamTheme } from '@/cunningham';
+import { useEditorStore } from '@/docs/doc-editor/stores/useEditorStore';
+import { useHeadingStore } from '@/docs/doc-editor/stores/useHeadingStore';
+import { useRightPanelStore } from '@/features/right-panel/components/useRightPanelStore';
+import { MAIN_LAYOUT_ID } from '@/layouts/conf';
+
+import { Heading } from './Heading';
+
+interface TableContentSideBarProps {
+  onClose: () => void;
+}
+
+export const TableContentSideBar = ({ onClose }: TableContentSideBarProps) => {
+  const { t } = useTranslation();
+  const { spacingsTokens } = useCunninghamTheme();
+  const { headings } = useHeadingStore();
+  const { editor } = useEditorStore();
+  const [headingIdHighlight, setHeadingIdHighlight] = useState<string>();
+
+  useEffect(() => {
+    const handleScroll = () => {
+      if (!headings) {
+        return;
+      }
+
+      let activeHeadingId: string | undefined;
+
+      for (const heading of headings) {
+        const elHeading = document.body.querySelector(
+          `.bn-block-outer[data-id="${heading.id}"] [data-content-type="heading"]:first-child`,
+        );
+
+        if (!elHeading) {
+          continue;
+        }
+
+        const rect = elHeading.getBoundingClientRect();
+
+        if (rect.top > 0) {
+          activeHeadingId = heading.id;
+          break;
+        }
+      }
+
+      // If no heading has passed the top yet, fall back to the first heading
+      if (!activeHeadingId && headings.length > 0) {
+        activeHeadingId = headings[0].id;
+      }
+
+      setHeadingIdHighlight(activeHeadingId);
+    };
+
+    let timeout: NodeJS.Timeout;
+    const scrollFn = () => {
+      if (timeout) {
+        clearTimeout(timeout);
+      }
+
+      timeout = setTimeout(() => {
+        handleScroll();
+      }, 300);
+    };
+
+    document
+      .getElementById(MAIN_LAYOUT_ID)
+      ?.addEventListener('scroll', scrollFn);
+
+    handleScroll();
+
+    return () => {
+      if (timeout) {
+        clearTimeout(timeout);
+      }
+      document
+        .getElementById(MAIN_LAYOUT_ID)
+        ?.removeEventListener('scroll', scrollFn);
+    };
+  }, [headings]);
+
+  return (
+    <Box $height="inherit">
+      <Box
+        $padding={{ vertical: 'base', horizontal: 'sm' }}
+        $css={css`
+          border-bottom: 1px solid
+            var(--c--contextuals--border--surface--primary);
+        `}
+      >
+        <Box $direction="row" $align="center" $justify="space-between">
+          <Text $weight="bold">{t('Table of Contents')}</Text>
+          <ButtonCloseModal
+            aria-label={t('Close the table of contents sidebar')}
+            onClick={onClose}
+          />
+        </Box>
+      </Box>
+      {editor && headings && headings.length > 0 && (
+        <Box
+          as="ul"
+          role="list"
+          $gap={spacingsTokens['3xs']}
+          $padding={{
+            vertical: 'base',
+            horizontal: 'sm',
+          }}
+          $css={css`
+            overflow-y: auto;
+            list-style: none;
+            margin: 0;
+          `}
+        >
+          {headings.map(
+            (heading) =>
+              heading.contentText && (
+                <Box as="li" role="listitem" key={heading.id}>
+                  <Heading
+                    editor={editor}
+                    headingId={heading.id}
+                    level={heading.props.level}
+                    text={heading.contentText}
+                    isHighlight={headingIdHighlight === heading.id}
+                  />
+                </Box>
+              ),
+          )}
+        </Box>
+      )}
+    </Box>
+  );
+};
+
+export const TableContentSideBarButton = () => {
+  const { t } = useTranslation();
+  const { isPanelOpen, activePanel, setActivePanel, setIsPanelOpen } =
+    useRightPanelStore();
+
+  const isActive = isPanelOpen && activePanel === 'tableContent';
+  const ariaLabel = isActive
+    ? t('Hide the table of contents sidebar')
+    : t('Show the table of contents sidebar');
+
+  return (
+    <Button
+      size="small"
+      onClick={() => {
+        if (isActive) {
+          setIsPanelOpen(false);
+        } else {
+          setActivePanel('tableContent');
+        }
+      }}
+      aria-label={ariaLabel}
+      aria-expanded={isActive}
+      color="neutral"
+      variant={isActive ? 'secondary' : 'tertiary'}
+      icon={<TableContentIcon width={24} height={24} aria-hidden="true" />}
+    ></Button>
+  );
+};

src/frontend/apps/impress/src/features/docs/doc-table-content/components/index.ts

@@ -1,2 +1 @@
-export * from './TableContent';
 export * from './Heading';

src/frontend/apps/impress/src/features/right-panel/components/RightPanel.tsx

@@ -1,31 +1,57 @@
+import { useEffect, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { css } from 'styled-components';
 
 import { Box } from '@/components';
 import { CommentSideBar } from '@/features/docs/doc-editor/components/comments/CommentSideBar';
 import { useDocStore, useProviderStore } from '@/features/docs/doc-management';
+import { TableContentSideBar } from '@/features/docs/doc-table-content/components/TableContentSideBar';
 import { HEADER_HEIGHT } from '@/features/header';
 import { useResponsiveStore } from '@/stores';
 
-import { useRightPanelStore } from './useRightPanelStore';
+import { RightPanelView, useRightPanelStore } from './useRightPanelStore';
 
 export const RightPanel = () => {
   const { t } = useTranslation();
   const { currentDoc: doc } = useDocStore();
-  const { setIsPanelOpen, isPanelOpen } = useRightPanelStore();
+  const { setIsPanelOpen, isPanelOpen, activePanel } = useRightPanelStore();
   const { isMobile } = useResponsiveStore();
   const { provider, isReady } = useProviderStore();
   const isProviderReady =
     isReady && provider && provider?.configuration.name === doc?.id;
 
+  /**
+   * Keep rendering the last active panel during the close animation,
+   * so the content doesn't vanish before the panel finishes sliding out.
+   * When switching panels, the content swaps instantly.
+   */
+  const [renderedPanel, setRenderedPanel] = useState<RightPanelView | null>(
+    null,
+  );
+  useEffect(() => {
+    if (activePanel !== null) {
+      setRenderedPanel(activePanel);
+    } else {
+      const timer = setTimeout(() => setRenderedPanel(null), 500);
+      return () => clearTimeout(timer);
+    }
+  }, [activePanel]);
+
   if (!doc || !isProviderReady) {
     return null;
   }
 
+  const ariaLabel = isPanelOpen
+    ? t('Right panel, currently open')
+    : t('Right panel, currently closed');
+
+  const handleClose = () => setIsPanelOpen(false);
+
   return (
     <Box
       className="--docs--right-panel"
-      aria-label={t('Right panel')}
+      aria-label={ariaLabel}
+      aria-expanded={isPanelOpen}
       $width="300px"
       $height={`calc(100dvh - ${HEADER_HEIGHT}px)`}
       $position={isMobile ? 'absolute' : 'sticky'}
@@ -49,7 +75,10 @@ export const RightPanel = () => {
         `}
       `}
     >
-      <CommentSideBar onClose={() => setIsPanelOpen(false)} />
+      {renderedPanel === 'tableContent' && (
+        <TableContentSideBar onClose={handleClose} />
+      )}
+      {renderedPanel === 'comments' && <CommentSideBar onClose={handleClose} />}
     </Box>
   );
 };

src/frontend/apps/impress/src/features/right-panel/components/RightPanelCollapseButton.tsx

@@ -4,12 +4,16 @@ import { css } from 'styled-components';
 import { Card } from '@/components';
 import { CommentSideBarButton } from '@/features/docs/doc-editor/components/comments/CommentSideBar';
 import { useEditorStore } from '@/features/docs/doc-editor/stores/useEditorStore';
+import { useHeadingStore } from '@/features/docs/doc-editor/stores/useHeadingStore';
+import { TableContentSideBarButton } from '@/features/docs/doc-table-content/components/TableContentSideBar';
 
 export const RightPanelCollapseButton = () => {
   const { threadStore } = useEditorStore();
   const [hasThreads, setHasThreads] = useState(
     !!threadStore?.getThreads().size,
   );
+  const { headings } = useHeadingStore();
+  const hasHeadings = headings.length > 0;
 
   useEffect(() => {
     if (!threadStore) {
@@ -21,7 +25,7 @@ export const RightPanelCollapseButton = () => {
     });
   }, [threadStore]);
 
-  if (!hasThreads) {
+  if (!hasThreads && !hasHeadings) {
     return null;
   }
 
@@ -37,6 +41,7 @@ export const RightPanelCollapseButton = () => {
         box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.05);
       `}
     >
+      {hasHeadings && <TableContentSideBarButton />}
       {hasThreads && <CommentSideBarButton />}
     </Card>
   );

src/frontend/apps/impress/src/features/right-panel/components/useRightPanelStore.tsx

@@ -1,17 +1,24 @@
 import { create } from 'zustand';
 
+export type RightPanelView = 'tableContent' | 'comments';
+
 export interface UseRightPanelStore {
   isPanelOpen: boolean;
+  activePanel: RightPanelView | null;
+  setActivePanel: (panel: RightPanelView | null) => void;
   setIsPanelOpen: (isOpen: boolean) => void;
   togglePanel: () => void;
 }
 
 export const useRightPanelStore = create<UseRightPanelStore>((set) => ({
   isPanelOpen: false,
-  setIsPanelOpen: (isPanelOpen) => {
+  activePanel: null,
-    set(() => ({ isPanelOpen }));
+  setActivePanel: (activePanel) =>
-  },
+    set(() => ({ activePanel, isPanelOpen: activePanel !== null })),
-  togglePanel: () => {
+  setIsPanelOpen: (isPanelOpen) =>
-    set((state) => ({ isPanelOpen: !state.isPanelOpen }));
+    set((state) => ({
-  },
+      isPanelOpen,
+      activePanel: isPanelOpen ? state.activePanel : null,
+    })),
+  togglePanel: () => set((state) => ({ isPanelOpen: !state.isPanelOpen })),
 }));

src/frontend/apps/impress/src/pages/docs/[id]/index.tsx

@@ -25,7 +25,10 @@ import { MAIN_LAYOUT_ID } from '@/layouts/conf';
 import { NextPageWithLayout } from '@/types/next';
 
 const DocEditor = dynamic(
-  () => import('@/docs/doc-editor').then((mod) => ({ default: mod.DocEditor })),
+  () =>
+    import('@/docs/doc-editor/components/DocEditor').then((mod) => ({
+      default: mod.DocEditor,
+    })),
   {
     ssr: false,
     loading: () => <DocEditorSkeleton />,