Documentation keyboard navigation

app/documentation/docs/[version]/[slug]/AccordionListWrapper.tsx

@@ -0,0 +1,67 @@
+"use client";
+import styles from '@/styles/accordion.module.scss'
+import { DocAnchorLinksType, MarkdownFileMetadata } from '@/types/types'
+import Accordion from '../../../../../components/Accordion/Accordion';
+import { useState } from 'react';
+import Link from 'next/link';
+import { cleanTags } from '@/lib/utils';
+
+export default function AccordionListWrapper({
+  items,
+  initialOpenSections
+}: {
+  items: MarkdownFileMetadata[] | null,
+  initialOpenSections: string[]
+}) {
+
+  const [openSections, setOpenSections] = useState(initialOpenSections);
+  const renderAccordionContent = (
+    items: Array<DocAnchorLinksType>, parentSlug: string, isOpen: boolean
+  ) => {
+    return (
+      <ul className={styles.accordionMenu}>
+        {items?.map((item, index) => (
+          <li key={item.slug + '_' + index}>
+            <Link
+              href={item.slug === parentSlug ? item.slug : parentSlug + '#' + item.slug}
+              // not navigable by keyboard when accordion isn't open
+              tabIndex={isOpen ? 0 : -1}
+            >
+              {item.sectionNumber} {cleanTags(item.content)}
+            </Link>
+          </li>
+        ))}
+      </ul>
+    )
+  }
+
+  const updateOpenAccordion = (id: string, isOpen: boolean) => {
+    let newOpenSections: string[] = Object.assign([], openSections);
+    if (isOpen) {
+      if (!newOpenSections.includes(id)) {
+        newOpenSections.push(id);
+      }
+    } else {
+      newOpenSections = openSections.filter(accordionId => accordionId !== id);
+    }
+
+    setOpenSections(newOpenSections);
+  }
+
+
+  return <>
+    {items?.map((item: MarkdownFileMetadata) => (
+      <Accordion
+        key={item.slug}
+        id={item.slug}
+        initialOpen = { openSections?.includes(item.slug) }
+        updateIsOpen={updateOpenAccordion}
+        title={ item?.title || `Chapter ${item.slug}`}
+        content={renderAccordionContent(item.anchorLinks, item.slug, openSections.includes(item.slug))}
+      />
+    ))}
+  </>;
+
+
+
+}

app/documentation/docs/[version]/[slug]/page.tsx

@@ -1,21 +1,18 @@
-import Accordion from '@/components/Accordion/Accordion'
 import AccordionGroup from '@/components/Accordion/AccordionGroup'
 import VersionSidebar from '@/components/VersionSidebar'
 import { compareSemanticVersions } from '@/utils/misc'
-import Link from 'next/link'
-import styles from '@/styles/accordion.module.scss'
-import {  cleanTags, getVersionIndex } from '@/lib/utils'
+import {  getVersionIndex } from '@/lib/utils'
 import availableVersions from '@/_content/docs';
 import Error from '@/components/Error'
-import { DocAnchorLinksType, MarkdownFileMetadata } from '@/types/types'
+import { MarkdownFileMetadata } from '@/types/types'
 import '@/styles/apidoc.scss'
 import '@fortawesome/fontawesome-free/js/fontawesome.min.js';
 import '@fortawesome/fontawesome-free/css/fontawesome.min.css';
 import '@fortawesome/fontawesome-free/css/solid.min.css';
 import ApiDocContentWrapper from '@/app/documentation/api/components/ApiDocContentWrapper'
+import AccordionListWrapper from '@/app/documentation/docs/[version]/[slug]/AccordionListWrapper'
 
 let indexJSON: MarkdownFileMetadata[] | null = null;
-
 export const generateMetadata = async ({
   params,
 }: {
@@ -32,30 +29,13 @@ export const generateMetadata = async ({
 
 }
 
-const renderAccordionContent = (
-  items: Array<DocAnchorLinksType>, parentSlug: string
-) => {
-  return (
-    <ul className={styles.accordionMenu}>
-      {items?.map((item, index) => (
-        <li key={item.slug + '_' + index}>
-          <Link
-            href={item.slug === parentSlug ? item.slug : parentSlug + '#' + item.slug}
-          >
-            {item.sectionNumber} {cleanTags(item.content)}
-          </Link>
-        </li>
-      ))}
-    </ul>
-  )
-}
-
 export default async function SingleDocPage({
   params,
 }: {
   params: { slug: string; version: string }
 }) {
 
+
   const { version } = params;
   if (!indexJSON) {
     indexJSON = await getVersionIndex(version, true);
@@ -78,16 +58,9 @@ export default async function SingleDocPage({
   return <>
     <div style={{ display: 'flex', flexDirection: 'column', gap: '2rem' }}>
       <VersionSidebar selectedVersion={params.version} versions={versions} baseHref='/documentation/docs/' />
-        <AccordionGroup>
-          {indexJSON?.map((item: MarkdownFileMetadata) => (
-            <Accordion
-              key={item.slug}
-              title={ item?.title || `Chapter ${item.slug}`}
-              content={renderAccordionContent(item.anchorLinks, item.slug)}
-            />
-          ))}
-        </AccordionGroup>
-
+      <AccordionGroup>
+        <AccordionListWrapper items={indexJSON} initialOpenSections={[activeSection.slug]}/>
+      </AccordionGroup>
     </div>
     <div>
       {activeSection ? (

components/Accordion/Accordion.tsx

@@ -1,16 +1,20 @@
 'use client'
-import React, { useEffect, useRef, useState } from 'react'
+import React, { KeyboardEvent, useEffect, useRef, useState } from 'react'
 import styles from '@/styles/accordion.module.scss'
 import Image from 'next/image'
 
 export default function Accordion({
+  id,
   title,
   content,
   initialOpen = false,
+  updateIsOpen,
 }: {
+  id?: string
   title: string
   content: string | React.ReactNode
-  initialOpen?: boolean
+  initialOpen?: boolean,
+  updateIsOpen?: (key: string, isOpen: boolean) => void,
 }) {
   const [isOpen, setIsOpen] = useState(initialOpen)
   const [isAccordionGroup, setIsAccordionGroup] = useState(false)
@@ -29,9 +33,19 @@ export default function Accordion({
           child.classList.toggle(styles.open)
         })
       }
-      return
     }
-    setIsOpen((prev) => !prev)
+    setIsOpen((prev) => {
+      if (updateIsOpen && id) {
+        updateIsOpen(id, !prev);
+      }
+      return !prev;
+    })
+  }
+
+  const accordionKeyUp = (event: KeyboardEvent) => {
+    if (event.key === 'Enter') {
+      toggleAccordion();
+    }
   }
 
   useEffect(() => {
@@ -49,8 +63,10 @@ export default function Accordion({
     >
       <div
         role='button'
+        tabIndex={0}
         className={styles.accordion__header}
         onClick={toggleAccordion}
+        onKeyUp={accordionKeyUp}
       >
         {title}
         <span className={styles.arrowIndicator}>

styles/accordion.module.scss

@@ -54,16 +54,77 @@
 .accordionGroup {
   & > * {
     &:first-child {
+      outline: none;
       border-bottom-left-radius: 0;
       border-bottom-right-radius: 0;
+
+      div[role="button"] {
+        &:active, &:focus {
+          outline: none;
+          border-top-left-radius: 1.875rem;
+          border-top-right-radius: 1.875rem;
+          border: 1px solid;
+        }
+      }
     }
+
     &:not(:first-child) {
       border-radius: 0;
       border-top: 1px solid #f3f3f3;
     }
+
     &:last-child {
       border-bottom-left-radius: 1.875rem;
       border-bottom-right-radius: 1.875rem;
+
+      div[role="button"] {
+        &:active, &:focus {
+          outline: none;
+          border: 1px solid;
+        }
+      }
+
+      li:first-child {
+        margin-top: 0.225rem;
+        outline: none;
+        border-bottom-left-radius: 0;
+        border-bottom-right-radius: 0;
+
+        a:active, a:focus {
+          margin-top: 0.225rem;
+          outline: none;
+          border: 1px solid;
+        }
+      }
+
+      li:last-child {
+        outline: none;
+        border-bottom-left-radius: 1.875rem;
+        border-bottom-right-radius: 1.875rem;
+
+        a:active, a:focus {
+          border-bottom-left-radius: 1.875rem;
+          border-bottom-right-radius: 1.875rem;
+          outline: none;
+          border: 1px solid;
+        }
+      }
+    }
+
+    &:last-child:not(.accordion.open) {
+      div[role="button"] {
+        &:active, &:focus {
+          outline: none;
+          border-bottom-left-radius: 1.875rem;
+          border-bottom-right-radius: 1.875rem;
+          border: 1px solid;
+        }
+      }
+    }
+
+    /*uncover the top border of active link of the first list element*/
+    li:first-child {
+      margin-top: 0.2rem;
     }
   }
 }
@@ -89,10 +150,29 @@
       padding: 1.25rem 2rem;
       width: 100%;
       display: block;
+
+      &:active, &:focus {
+        outline: none;
+        border: 1px solid black;
+      }
+
     }
 
     &:not(:first-child) {
       border-top: 1px solid #f3f3f3;
     }
+
+    &:last-child {
+      border-bottom-left-radius: 1.875rem;
+      border-bottom-right-radius: 1.875rem;
+    }
+/*
+    &:last-child {
+      a:active, a:focus {
+        border-bottom-left-radius: 1.875rem;
+        border-bottom-right-radius: 1.875rem;
+      }
+    }
+    */
   }
 }