Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `app/javascript/mastodon/locales/ja.json`:
  Upstream change too close to a glitch-soc-specific string.
  The glitch-soc-specific string should not have been in this file, so it
  has been moved to `app/javascript/flavours/glitch/locales/ja.js`.
- `app/javascript/packs/public.js`:
  Upstream refactored a part, that as usual is split and duplicated in various
  pack files. Updated those pack files accordingly.
- `app/views/layouts/application.html.haml`:
  Upstream fixed custom.css path in a different way than we did, went with
  upstream's change.

app/javascript/flavours/glitch/locales/ja.js

@@ -8,6 +8,7 @@ const messages = {
   'layout.single': 'モバイル',
   'navigation_bar.app_settings': 'アプリ設定',
   'navigation_bar.featured_users': '紹介しているアカウント',
+  'navigation_bar.misc': 'その他',
   'getting_started.onboarding': '解説を表示',
   'onboarding.page_one.federation': '{domain}はMastodonのインスタンスです。Mastodonとは、独立したサーバが連携して作るソーシャルネットワークです。これらのサーバーをインスタンスと呼びます。',
   'onboarding.page_one.welcome': '{domain}へようこそ！',

app/javascript/flavours/glitch/packs/public.js

@@ -139,8 +139,31 @@ function main() {
     });
   });
 
+  const toggleSidebar = () => {
+    const sidebar = document.querySelector('.sidebar ul');
+    const toggleButton = document.querySelector('.sidebar__toggle__icon');
+
+    if (sidebar.classList.contains('visible')) {
+      document.body.style.overflow = null;
+      toggleButton.setAttribute('aria-expanded', false);
+    } else {
+      document.body.style.overflow = 'hidden';
+      toggleButton.setAttribute('aria-expanded', true);
+    }
+
+    toggleButton.classList.toggle('active');
+    sidebar.classList.toggle('visible');
+  };
+
   delegate(document, '.sidebar__toggle__icon', 'click', () => {
-    document.querySelector('.sidebar ul').classList.toggle('visible');
+    toggleSidebar();
+  });
+
+  delegate(document, '.sidebar__toggle__icon', 'keydown', e => {
+    if (e.key === ' ' || e.key === 'Enter') {
+      e.preventDefault();
+      toggleSidebar();
+    }
   });
 
   // Empty the honeypot fields in JS in case something like an extension

app/javascript/flavours/glitch/packs/settings.js

@@ -7,8 +7,31 @@ import 'cocoon-js-vanilla';
 function main() {
   const { delegate } = require('@rails/ujs');
 
+  const toggleSidebar = () => {
+    const sidebar = document.querySelector('.sidebar ul');
+    const toggleButton = document.querySelector('.sidebar__toggle__icon');
+
+    if (sidebar.classList.contains('visible')) {
+      document.body.style.overflow = null;
+      toggleButton.setAttribute('aria-expanded', false);
+    } else {
+      document.body.style.overflow = 'hidden';
+      toggleButton.setAttribute('aria-expanded', true);
+    }
+
+    toggleButton.classList.toggle('active');
+    sidebar.classList.toggle('visible');
+  };
+
   delegate(document, '.sidebar__toggle__icon', 'click', () => {
-    document.querySelector('.sidebar ul').classList.toggle('visible');
+    toggleSidebar();
+  });
+
+  delegate(document, '.sidebar__toggle__icon', 'keydown', e => {
+    if (e.key === ' ' || e.key === 'Enter') {
+      e.preventDefault();
+      toggleSidebar();
+    }
   });
 }