Rename `more-dropdown` to `more-dropdown-links` (#4584)

1 files changed, 68 insertions, 0 deletions

diff --git a/source/features/more-dropdown-links.tsx b/source/features/more-dropdown-links.tsx
new file mode 100644
index 00000000..14c4296d
--- /dev/null
+++ b/source/features/more-dropdown-links.tsx
@@ -0,0 +1,68 @@
+import './more-dropdown-links.css';
+import React from 'dom-chef';
+import select from 'select-dom';
+import elementReady from 'element-ready';
+import * as pageDetect from 'github-url-detection';
+
+import features from '.';
+import getDefaultBranch from '../github-helpers/get-default-branch';
+import {buildRepoURL, getCurrentCommittish} from '../github-helpers';
+
+export function createDropdownItem(label: string, url: string, attributes?: Record<string, string>): Element {
+	return (
+		<li {...attributes}>
+			<a role="menuitem" className="dropdown-item" href={url}>
+				{label}
+			</a>
+		</li>
+	);
+}
+
+export function onlyShowInDropdown(id: string): void {
+	const tabItem = select(`[data-tab-item$="${id}"]`);
+	if (!tabItem && pageDetect.isEnterprise()) { // GHE #3962
+		return;
+	}
+
+	(tabItem!.closest('li') ?? tabItem!.closest('.UnderlineNav-item'))!.classList.add('d-none');
+
+	const menuItem = select(`[data-menu-item$="${id}"]`)!;
+	menuItem.removeAttribute('data-menu-item');
+	menuItem.hidden = false;
+	// The item has to be moved somewhere else because the overflow nav is order-dependent
+	select('.js-responsive-underlinenav-overflow ul')!.append(menuItem);
+}
+
+export async function unhideOverflowDropdown(): Promise<void> {
+	// Wait for the tab bar to be loaded
+	const repoNavigationBar = (await elementReady('.UnderlineNav-body'))!;
+	repoNavigationBar.parentElement!.classList.add('rgh-has-more-dropdown');
+}
+
+async function init(): Promise<void> {
+	const reference = getCurrentCommittish() ?? await getDefaultBranch();
+	const compareUrl = buildRepoURL('compare', reference);
+	const commitsUrl = buildRepoURL('commits', reference);
+	const branchesUrl = buildRepoURL('branches');
+	const dependenciesUrl = buildRepoURL('network/dependencies');
+	await unhideOverflowDropdown();
+
+	select('.js-responsive-underlinenav-overflow ul')!.append(
+		<li className="dropdown-divider" role="separator"/>,
+		createDropdownItem('Compare', compareUrl),
+		pageDetect.isEnterprise() ? '' : createDropdownItem('Dependencies', dependenciesUrl),
+		createDropdownItem('Commits', commitsUrl),
+		createDropdownItem('Branches', branchesUrl),
+	);
+}
+
+void features.add(__filebasename, {
+	include: [
+		pageDetect.isRepo,
+	],
+	exclude: [
+		pageDetect.isEmptyRepo,
+	],
+	awaitDomReady: false,
+	init,
+});