✨(frontend) add resizable left panel on desktop with persistence

mainlayout and leftpanel updated with resizable panel saved in localstorage

Signed-off-by: Cyril <c.gromoff@gmail.com>

✨(frontend) show full nested doc names with horizontal scroll support

horizontal overflow enabled and opacity used for sticky actions visibility

Signed-off-by: Cyril <c.gromoff@gmail.com>

✨(frontend) show full nested doc names with horizontal scroll support

horizontal overflow enabled and opacity used for sticky actions visibility

Signed-off-by: Cyril <c.gromoff@gmail.com>

✨(frontend) add resizable-panels lib also used in our shared ui kit

needed for adaptable ui consistent with our shared ui kit components

Signed-off-by: Cyril <c.gromoff@gmail.com>

.gitignore

@@ -75,3 +75,6 @@ db.sqlite3
 .vscode/
 *.iml
 .devcontainer
+
+# Cursor rules
+.cursorrules

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to
 ## Fixed
 
 - 🐛(frontend) fix duplicate document entries in grid #1479
+- 🐛(frontend) show full nested doc names with ajustable bar #1456
 
 ## [3.8.2] - 2025-10-17
 
@@ -30,7 +31,6 @@ and this project adheres to
 
 - 🔥(backend) remove treebeard form for the document admin #1470
 
-
 ## [3.8.0] - 2025-10-14
 
 ### Added
@@ -38,6 +38,10 @@ and this project adheres to
 - ✨(frontend) add pdf block to the editor #1293
 - ✨List and restore deleted docs #1450
 
+### Fixed
+
+- 🐛(frontend) show full nested doc names with ajustable bar #1456
+
 ### Changed
 
 - ♻️(frontend) Refactor Auth component for improved redirection logic #1461

src/frontend/apps/e2e/__tests__/app-impress/left-panel.spec.ts

@@ -1,5 +1,7 @@
 import { expect, test } from '@playwright/test';
 
+import { createDoc } from './utils-common';
+
 test.describe('Left panel desktop', () => {
   test.beforeEach(async ({ page }) => {
     await page.goto('/');
@@ -11,6 +13,53 @@ test.describe('Left panel desktop', () => {
     await expect(page.getByTestId('home-button')).toBeVisible();
     await expect(page.getByTestId('new-doc-button')).toBeVisible();
   });
+
+  test('checks resize handle is present and functional on document page', async ({
+    page,
+    browserName,
+  }) => {
+    // On home page, resize handle should NOT be present
+    let resizeHandle = page.locator('[data-panel-resize-handle-id]');
+    await expect(resizeHandle).toBeHidden();
+
+    // Create and navigate to a document
+    await createDoc(page, 'doc-resize-test', browserName, 1);
+
+    // Now resize handle should be visible on document page
+    resizeHandle = page.locator('[data-panel-resize-handle-id]').first();
+    await expect(resizeHandle).toBeVisible();
+
+    const leftPanel = page.getByTestId('left-panel-desktop');
+    await expect(leftPanel).toBeVisible();
+
+    // Get initial panel width
+    const initialBox = await leftPanel.boundingBox();
+    expect(initialBox).not.toBeNull();
+
+    // Get handle position
+    const handleBox = await resizeHandle.boundingBox();
+    expect(handleBox).not.toBeNull();
+
+    // Test resize by dragging the handle
+    await page.mouse.move(
+      handleBox!.x + handleBox!.width / 2,
+      handleBox!.y + handleBox!.height / 2,
+    );
+    await page.mouse.down();
+    await page.mouse.move(
+      handleBox!.x + 100,
+      handleBox!.y + handleBox!.height / 2,
+    );
+    await page.mouse.up();
+
+    // Wait for resize to complete
+    await page.waitForTimeout(200);
+
+    // Verify the panel has been resized
+    const newBox = await leftPanel.boundingBox();
+    expect(newBox).not.toBeNull();
+    expect(newBox!.width).toBeGreaterThan(initialBox!.width);
+  });
 });
 
 test.describe('Left panel mobile', () => {
@@ -47,4 +96,12 @@ test.describe('Left panel mobile', () => {
     await expect(languageButton).toBeInViewport();
     await expect(logoutButton).toBeInViewport();
   });
+
+  test('checks resize handle is not present on mobile', async ({ page }) => {
+    await page.goto('/');
+
+    // Verify the resize handle is NOT present on mobile
+    const resizeHandle = page.locator('[data-panel-resize-handle-id]');
+    await expect(resizeHandle).toBeHidden();
+  });
 });

src/frontend/apps/impress/package.json

@@ -60,6 +60,7 @@
     "react-dom": "*",
     "react-i18next": "15.7.3",
     "react-intersection-observer": "9.16.0",
+    "react-resizable-panels": "3.0.6",
     "react-select": "5.10.2",
     "styled-components": "6.1.19",
     "use-debounce": "10.0.6",

src/frontend/apps/impress/src/features/docs/doc-tree/components/DocSubPageItem.tsx

@@ -163,6 +163,7 @@ export const DocSubPageItem = (props: TreeViewNodeProps<Doc>) => {
           aria-label={`${t('Open document {{title}}', { title: docTitle })}`}
           $css={css`
             text-align: left;
+            min-width: 0;
           `}
         >
           <Box $width="16px" $height="16px">
@@ -180,8 +181,10 @@ export const DocSubPageItem = (props: TreeViewNodeProps<Doc>) => {
               display: flex;
               flex-direction: row;
               width: 100%;
+              min-width: 0;
               gap: 0.5rem;
               align-items: center;
+              overflow: hidden;
             `}
           >
             <Text $css={ItemTextCss} $size="sm" $variation="1000">

src/frontend/apps/impress/src/features/docs/doc-tree/components/DocTree.tsx

@@ -184,7 +184,6 @@ export const DocTree = ({ currentDoc }: DocTreeProps) => {
         /* Remove outline from TreeViewItem wrapper elements */
         .c__tree-view--row {
           outline: none !important;
-
           &:focus-visible {
             outline: none !important;
           }
@@ -241,7 +240,7 @@ export const DocTree = ({ currentDoc }: DocTreeProps) => {
               }
             }
             &:hover,
-            &:focus-within {
+            &:focus-visible {
               .doc-tree-root-item-actions {
                 opacity: 1;
               }

src/frontend/apps/impress/src/features/left-panel/components/LeftPanel.tsx

@@ -39,12 +39,10 @@ export const LeftPanel = () => {
       {isDesktop && (
         <Box
           data-testid="left-panel-desktop"
-          $css={`
+          $css={css`
             height: calc(100vh - ${HEADER_HEIGHT}px);
-            width: 300px;
+            width: 100%;
-            min-width: 300px;
             overflow: hidden;
-            border-right: 1px solid ${colorsTokens['greyscale-200']};
             background-color: ${colorsTokens['greyscale-000']};
           `}
           className="--docs--left-panel-desktop"

src/frontend/apps/impress/src/features/left-panel/components/ResizableLeftPanel.tsx

@@ -0,0 +1,110 @@
+import { useEffect, useRef, useState } from 'react';
+import {
+  ImperativePanelHandle,
+  Panel,
+  PanelGroup,
+  PanelResizeHandle,
+} from 'react-resizable-panels';
+import { createGlobalStyle } from 'styled-components';
+
+import { useCunninghamTheme } from '@/cunningham';
+
+interface PanelStyleProps {
+  $isResizing: boolean;
+}
+
+const PanelStyle = createGlobalStyle<PanelStyleProps>`
+  ${({ $isResizing }) => $isResizing && `body * { transition: none !important; }`}
+`;
+
+// Convert a target pixel width to a percentage of the current viewport width.
+// react-resizable-panels expects sizes in %, not px.
+const calculateDefaultSize = (targetWidth: number) => {
+  const windowWidth = window.innerWidth;
+  return (targetWidth / windowWidth) * 100;
+};
+
+type ResizableLeftPanelProps = {
+  leftPanel: React.ReactNode;
+  children: React.ReactNode;
+  minPanelSizePx?: number;
+  maxPanelSizePx?: number;
+};
+
+export const ResizableLeftPanel = ({
+  leftPanel,
+  children,
+  minPanelSizePx = 300,
+  maxPanelSizePx = 450,
+}: ResizableLeftPanelProps) => {
+  const [isResizing, setIsResizing] = useState(false);
+  const { colorsTokens } = useCunninghamTheme();
+  const ref = useRef<ImperativePanelHandle>(null);
+  const resizeTimeoutRef = useRef<number | undefined>(undefined);
+
+  const [minPanelSize, setMinPanelSize] = useState(0);
+  const [maxPanelSize, setMaxPanelSize] = useState(0);
+
+  // Single resize listener that handles both panel size updates and transition disabling
+  useEffect(() => {
+    const handleResize = () => {
+      // Update panel sizes (px -> %)
+      const min = Math.round(calculateDefaultSize(minPanelSizePx));
+      const max = Math.round(
+        Math.min(calculateDefaultSize(maxPanelSizePx), 40),
+      );
+      setMinPanelSize(min);
+      setMaxPanelSize(max);
+
+      // Temporarily disable transitions to avoid flicker
+      setIsResizing(true);
+      if (resizeTimeoutRef.current) {
+        clearTimeout(resizeTimeoutRef.current);
+      }
+      resizeTimeoutRef.current = window.setTimeout(() => {
+        setIsResizing(false);
+      }, 150);
+    };
+
+    handleResize();
+
+    window.addEventListener('resize', handleResize);
+
+    return () => {
+      window.removeEventListener('resize', handleResize);
+      if (resizeTimeoutRef.current) {
+        clearTimeout(resizeTimeoutRef.current);
+      }
+    };
+  }, [minPanelSizePx, maxPanelSizePx]);
+
+  return (
+    <>
+      <PanelStyle $isResizing={isResizing} />
+      <PanelGroup
+        autoSaveId="docs-left-panel-persistence"
+        direction="horizontal"
+      >
+        <Panel
+          ref={ref}
+          order={0}
+          defaultSize={minPanelSize}
+          minSize={minPanelSize}
+          maxSize={maxPanelSize}
+        >
+          {leftPanel}
+        </Panel>
+        <PanelResizeHandle
+          style={{
+            borderRightWidth: '1px',
+            borderRightStyle: 'solid',
+            borderRightColor: colorsTokens['greyscale-200'],
+            width: '1px',
+            cursor: 'col-resize',
+          }}
+        />
+        <Panel order={1}>{children}</Panel>
+      </PanelGroup>
+    </>
+  );
+};

src/frontend/apps/impress/src/features/left-panel/components/index.tsx

@@ -1 +1,2 @@
 export * from './LeftPanel';
+export * from './ResizableLeftPanel';

src/frontend/apps/impress/src/layouts/MainLayout.tsx

@@ -6,23 +6,21 @@ import { Box } from '@/components';
 import { useCunninghamTheme } from '@/cunningham';
 import { Header } from '@/features/header';
 import { HEADER_HEIGHT } from '@/features/header/conf';
-import { LeftPanel } from '@/features/left-panel';
+import { LeftPanel, ResizableLeftPanel } from '@/features/left-panel';
-import { MAIN_LAYOUT_ID } from '@/layouts/conf';
 import { useResponsiveStore } from '@/stores';
 
+import { MAIN_LAYOUT_ID } from './conf';
+
 type MainLayoutProps = {
   backgroundColor?: 'white' | 'grey';
+  enableResizablePanel?: boolean;
 };
 
 export function MainLayout({
   children,
   backgroundColor = 'white',
+  enableResizablePanel = false,
 }: PropsWithChildren<MainLayoutProps>) {
-  const { isDesktop } = useResponsiveStore();
-  const { colorsTokens } = useCunninghamTheme();
-  const currentBackgroundColor = !isDesktop ? 'white' : backgroundColor;
-  const { t } = useTranslation();
-
   return (
     <Box className="--docs--main-layout">
       <Header />
@@ -30,33 +28,90 @@ export function MainLayout({
         $direction="row"
         $margin={{ top: `${HEADER_HEIGHT}px` }}
         $width="100%"
+        $height={`calc(100dvh - ${HEADER_HEIGHT}px)`}
       >
-        <LeftPanel />
+        <MainLayoutContent
-        <Box
+          backgroundColor={backgroundColor}
-          as="main"
+          enableResizablePanel={enableResizablePanel}
-          role="main"
-          aria-label={t('Main content')}
-          id={MAIN_LAYOUT_ID}
-          $align="center"
-          $flex={1}
-          $width="100%"
-          $height={`calc(100dvh - ${HEADER_HEIGHT}px)`}
-          $padding={{
-            all: isDesktop ? 'base' : '0',
-          }}
-          $background={
-            currentBackgroundColor === 'white'
-              ? colorsTokens['greyscale-000']
-              : colorsTokens['greyscale-050']
-          }
-          $css={css`
-            overflow-y: auto;
-            overflow-x: clip;
-          `}
         >
           {children}
-        </Box>
+        </MainLayoutContent>
       </Box>
     </Box>
   );
 }
+
+export interface MainLayoutContentProps {
+  backgroundColor: 'white' | 'grey';
+  enableResizablePanel?: boolean;
+}
+
+export function MainLayoutContent({
+  children,
+  backgroundColor,
+  enableResizablePanel = false,
+}: PropsWithChildren<MainLayoutContentProps>) {
+  const { isDesktop } = useResponsiveStore();
+  const { colorsTokens } = useCunninghamTheme();
+  const { t } = useTranslation();
+  const currentBackgroundColor = !isDesktop ? 'white' : backgroundColor;
+
+  const mainContent = (
+    <Box
+      as="main"
+      role="main"
+      aria-label={t('Main content')}
+      id={MAIN_LAYOUT_ID}
+      $align="center"
+      $flex={1}
+      $width="100%"
+      $height={`calc(100dvh - ${HEADER_HEIGHT}px)`}
+      $padding={{
+        all: isDesktop ? 'base' : '0',
+      }}
+      $background={
+        currentBackgroundColor === 'white'
+          ? colorsTokens['greyscale-000']
+          : colorsTokens['greyscale-050']
+      }
+      $css={css`
+        overflow-y: auto;
+        overflow-x: clip;
+      `}
+    >
+      {children}
+    </Box>
+  );
+
+  if (!isDesktop) {
+    return (
+      <>
+        <LeftPanel />
+        {mainContent}
+      </>
+    );
+  }
+
+  if (enableResizablePanel) {
+    return (
+      <ResizableLeftPanel leftPanel={<LeftPanel />}>
+        {mainContent}
+      </ResizableLeftPanel>
+    );
+  }
+
+  return (
+    <>
+      <Box
+        $css={css`
+          width: 300px;
+          min-width: 300px;
+          border-right: 1px solid ${colorsTokens['greyscale-200']};
+        `}
+      >
+        <LeftPanel />
+      </Box>
+      {mainContent}
+    </>
+  );
+}

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

@@ -47,7 +47,7 @@ export function DocLayout() {
           return subPageToTree(doc.results);
         }}
       >
-        <MainLayout>
+        <MainLayout enableResizablePanel={true}>
           <DocPage id={id} />
         </MainLayout>
       </TreeProvider>

src/frontend/yarn.lock

@@ -13793,6 +13793,11 @@ react-resizable-panels@2.1.7:
   resolved "https://registry.yarnpkg.com/react-resizable-panels/-/react-resizable-panels-2.1.7.tgz#afd29d8a3d708786a9f95183a38803c89f13c2e7"
   integrity sha512-JtT6gI+nURzhMYQYsx8DKkx6bSoOGFp7A3CwMrOb8y5jFHFyqwo9m68UhmXRw57fRVJksFn1TSlm3ywEQ9vMgA==
 
+react-resizable-panels@3.0.6:
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/react-resizable-panels/-/react-resizable-panels-3.0.6.tgz#8183132ea13a09821e9c93962ed49f240cdcfd3f"
+  integrity sha512-b3qKHQ3MLqOgSS+FRYKapNkJZf5EQzuf6+RLiq1/IlTHw99YrZ2NJZLk4hQIzTnnIkRg2LUqyVinu6YWWpUYew==
+
 react-select@5.10.2:
   version "5.10.2"
   resolved "https://registry.yarnpkg.com/react-select/-/react-select-5.10.2.tgz#8dffc69dfd7d74684d9613e6eb27204e3b99e127"