Add JumpTo Component (Experiment - Hindi Service)

src/app/components/InlineLink/index.tsx

@@ -36,7 +36,8 @@ const InlineLink: FC<Props> = ({
 }: Props) => {
   const { externalLinkText } = useContext(ServiceContext);
   const { hostname } = new Url(to);
-  const isExternalLink = !bbcDomains.some(bbcDomain => hostname === bbcDomain);
+  const isExternalLink =
+    hostname && !bbcDomains.some(bbcDomain => hostname === bbcDomain);
   const linkProps = {
     ...(isExternalLink &&
       typeof text === 'string' && {

src/app/components/JumpTo/README.md

@@ -0,0 +1,12 @@
+## Description
+
+The JumpTo component serves as an in-page navigation menu, similar to a table of contents, allowing users to quickly jump to specific headings within an article. This component renders text as a `strong` element, a list of `anchor` links, and groups them within a `navigation` landmark. When a link is actioned, the page scrolls down to the relevant heading, identified by matching anchor `ids`.
+
+This component is typically used in articles with multiple headings, enhancing content findability by providing quick navigation options.
+
+## Props
+
+| Name              | type                  | Description                                     |
+| ----------------- | --------------------- | ----------------------------------------------- |
+| jumpToData        | object                | Contains article headings with titles and IDs   |
+| eventTrackingData | eventTrackingMetadata | Contains click and view tracking data for Piano |

src/app/components/JumpTo/index.stories.tsx

@@ -0,0 +1,38 @@
+import React from 'react';
+
+import JumpTo, { JumpToProps } from '.';
+import metadata from './metadata.json';
+import readme from './README.md';
+
+const Component = ({ jumpToHeadings = [] }: JumpToProps) => {
+  return <JumpTo jumpToHeadings={jumpToHeadings} />;
+};
+
+export default {
+  title: 'Components/JumpTo',
+  Component,
+  parameters: {
+    docs: { readme },
+    metadata,
+  },
+};
+
+// wip sample story - should use a fixture here instead probably for the titles
+export const Example = () => {
+  const jumpToHeadings = [
+    {
+      heading: 'This is a subheading - a',
+    },
+    {
+      heading: 'This is a subheading - b',
+    },
+    {
+      heading: 'This is a subheading - c',
+    },
+    {
+      heading: 'This is a subheading - d',
+    },
+  ];
+
+  return <Component jumpToHeadings={jumpToHeadings} />;
+};

src/app/components/JumpTo/index.tsx

@@ -0,0 +1,58 @@
+/** @jsx jsx */
+import { useContext } from 'react';
+import { jsx } from '@emotion/react';
+import { ServiceContext } from '#contexts/ServiceContext';
+import useViewTracker from '#app/hooks/useViewTracker';
+import useClickTrackerHandler from '#app/hooks/useClickTrackerHandler';
+import { EventTrackingMetadata } from '#app/models/types/eventTracking';
+import Text from '#app/components/Text';
+import InlineLink from '#app/components/InlineLink';
+import idSanitiser from '../../lib/utilities/idSanitiser';
+
+export interface JumpToProps {
+  jumpToHeadings?: Array<{ heading: string }>;
+  eventTrackingData?: EventTrackingMetadata;
+}
+
+const JumpTo = ({ jumpToHeadings, eventTrackingData }: JumpToProps) => {
+  const { translations } = useContext(ServiceContext);
+  const { jumpTo = 'Jump to' } = translations?.articlePage || {};
+
+  const viewRef = useViewTracker(eventTrackingData);
+  const clickTrackerHandler = useClickTrackerHandler({
+    ...eventTrackingData,
+    componentName: 'jumpto',
+  });
+
+  const titleId = 'jump-to-heading';
+
+  return (
+    <nav
+      ref={viewRef}
+      role="navigation"
+      aria-labelledby={titleId}
+      data-testid="jump-to"
+    >
+      <Text as="strong" id={titleId}>
+        {jumpTo}
+      </Text>
+      <ol role="list">
+        {jumpToHeadings?.map(({ heading }) => {
+          const sanitisedId = idSanitiser(heading);
+          return (
+            <li key={sanitisedId}>
+              <InlineLink
+                to={`#${sanitisedId}`}
+                onClick={clickTrackerHandler}
+                data-testid={`jump-to-link-${sanitisedId}`}
+                text={heading}
+              />
+            </li>
+          );
+        })}
+      </ol>
+    </nav>
+  );
+};
+
+export default JumpTo;

src/app/components/JumpTo/metadata.json

@@ -0,0 +1,29 @@
+{
+  "alpha": false,
+  "lastUpdated": {
+    "day": 1,
+    "month": "November",
+    "year": 2024
+  },
+  "uxAccessibilityDoc": {
+    "done": true,
+    "reference": {
+      "url": "https://www.figma.com/design/axYpw2KkNQAMjzdOYa677D/WS-OJ-experiment-handover?node-id=3506-3763&node-type=frame&t=djsGA5Y4x4ey3ar4-0",
+      "label": "Screen Reader UX"
+    }
+  },
+  "acceptanceCriteria": {
+    "done": true,
+    "reference": {
+      "url": "https://paper.dropbox.com/doc/Jump-to-menu-Accessibility-acceptance-criteria--CZuZGgB0eyva~6M50q_UCCQUAg-b5wF4xr9YMgITE0Ui9sWc",
+      "label": "Accessibility Acceptance Criteria"
+    }
+  },
+  "swarm": {
+    "done": false,
+    "reference": {
+      "url": "",
+      "label": "Accessibility Swarm Notes"
+    }
+  }
+}

src/app/legacy/containers/PageHandlers/withHashChangeHandler/index.jsx

@@ -18,7 +18,7 @@ const useHashChangeHandler = hash => {
 const getHashProp = path(['location', 'hash']);
 
 const withHashChangeHandler = Component => props => {
-  const hash = getHashProp(props);
+  const hash = decodeURIComponent(getHashProp(props));
 
   useHashChangeHandler(hash);
 

src/app/legacy/containers/PageHandlers/withHashChangeHandler/index.test.jsx

@@ -6,18 +6,74 @@ import withHashChangeHandler from '.';
 const Fixture = withHashChangeHandler(() => (
   <>
     <a href="#section-1">Go to section 1</a>
-    <section id="section-1">Section 1</section>
+    <h2 id="section-1">Section 1</h2>
+  </>
+));
+
+const CyrillicFixture = withHashChangeHandler(() => (
+  <>
+    <a href="#Мирнија-сам-неко-брине-о-њој-док-је-у-школи">Go to section 1</a>
+    <h2 id="Мирнија-сам-неко-брине-о-њој-док-је-у-школи">Section 1</h2>
+  </>
+));
+
+const HindiFixture = withHashChangeHandler(() => (
+  <>
+    <a href="#आंखों-के-सामने-छा-गया-था-अंधेरा">Go to section 1</a>
+    <h2 id="आंखों-के-सामने-छा-गया-था-अंधेरा">Section 1</h2>
   </>
 ));
 
 window.HTMLElement.prototype.scrollIntoView = jest.fn();
 window.HTMLElement.prototype.focus = jest.fn();
 
-it('should scroll into view and focus on element when hash location changes', async () => {
-  const { rerender } = render(<Fixture location={{ hash: '' }} />);
+describe('withHashChangeHandler', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('should scroll into view and focus on element when hash location changes', async () => {
+    const { rerender } = render(<Fixture location={{ hash: '' }} />);
+
+    rerender(<Fixture location={{ hash: '#section-1' }} />);
+
+    expect(window.HTMLElement.prototype.scrollIntoView).toHaveBeenCalledTimes(
+      1,
+    );
+    expect(window.HTMLElement.prototype.focus).toHaveBeenCalledTimes(1);
+  });
+
+  it('should scroll into view and focus on element when hash location contains Cyrillic characters', async () => {
+    render(
+      <CyrillicFixture
+        location={{
+          hash:
+            // This is the encoded version of Мирнија-сам-неко-брине-о-њој-док-је-у-школи
+            '#%D0%9C%D0%B8%D1%80%D0%BD%D0%B8%D1%98%D0%B0-%D1%81%D0%B0%D0%BC-%D0%BD%D0%B5%D0%BA%D0%BE-%D0%B1%D1%80%D0%B8%D0%BD%D0%B5-%D0%BE-%D1%9A%D0%BE%D1%98-%D0%B4%D0%BE%D0%BA-%D1%98%D0%B5-%D1%83-%D1%88%D0%BA%D0%BE%D0%BB%D0%B8',
+        }}
+      />,
+    );
+
+    expect(window.HTMLElement.prototype.scrollIntoView).toHaveBeenCalledTimes(
+      1,
+    );
+    expect(window.HTMLElement.prototype.focus).toHaveBeenCalledTimes(1);
+  });
 
-  rerender(<Fixture location={{ hash: '#section-1' }} />);
+  it('should scroll into view and focus on element when hash location contains Hindi characters', async () => {
+    render(
+      <HindiFixture
+        location={{
+          hash:
+            // This is the encoded version of आंखों-के-सामने-छा-गया-था-अंधेरा
+            '#%E0%A4%86%E0%A4%82%E0%A4%96%E0%A5%8B%E0%A4%82-%E0%A4%95%E0%A5%87-%E0%A4%B8%E0%A4%BE%E0%A4%AE%E0%A4%A8%E0%A5%87-%E0%A4%9B%E0%A4%BE-%E0%A4%97%E0%A4%AF%E0%A4%BE-%E0%A4%A5%E0%A4%BE-%E0%A4%85%E0%A4%82%E0%A4%A7%E0%A5%87%E0%A4%B0%E0%A4%BE',
+        }}
+      />,
+    );
 
-  expect(window.HTMLElement.prototype.scrollIntoView).toHaveBeenCalledTimes(1);
-  expect(window.HTMLElement.prototype.focus).toHaveBeenCalledTimes(1);
+    expect(window.HTMLElement.prototype.scrollIntoView).toHaveBeenCalledTimes(
+      1,
+    );
+    expect(window.HTMLElement.prototype.focus).toHaveBeenCalledTimes(1);
+  });
 });

src/app/lib/config/services/hindi.ts

@@ -87,6 +87,9 @@ export const service: DefaultServiceConfig = {
         audioPlayer: 'ऑडिया प्लेयर',
         videoPlayer: 'वीडियो प्लेयर',
       },
+      articlePage: {
+        jumpTo: 'Jump to', // replace with Hindi translation later
+      },
       liveExperiencePage: {
         liveLabel: 'लाइव',
         liveCoverage: 'लाइव कवरेज',

src/app/models/types/translations.ts

@@ -31,6 +31,9 @@ export interface Translations {
     audioPlayer: string;
     videoPlayer: string;
   };
+  articlePage?: {
+    jumpTo: string;
+  };
   liveExperiencePage: {
     liveLabel: string;
     liveCoverage: string;