fix(v2): enable scrolling for sidebar menu only (#2645)

* fix(v2): enable scrolling for sidebar menu only

* Add support for announcement bar

* fix: remove redundant styles

packages/docusaurus-theme-classic/src/theme/AnnouncementBar/index.js

@@ -5,44 +5,23 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import React, {useState, useEffect} from 'react';
+import React from 'react';
 import useDocusaurusContext from '@docusaurus/useDocusaurusContext';
+import useAnnouncementBarContext from '@theme/hooks/useAnnouncementBarContext';
 
 import styles from './styles.module.css';
 
-const STORAGE_DISMISS_KEY = 'docusaurus.announcement.dismiss';
-const STORAGE_ID_KEY = 'docusaurus.announcement.id';
-
 function AnnouncementBar() {
   const {
     siteConfig: {themeConfig: {announcementBar = {}}} = {},
   } = useDocusaurusContext();
-  const {id, content, backgroundColor, textColor} = announcementBar;
+  const {content, backgroundColor, textColor} = announcementBar;
-  const [isClosed, setClosed] = useState(true);
+  const {
-  const handleClose = () => {
+    isAnnouncementBarClosed,
-    localStorage.setItem(STORAGE_DISMISS_KEY, true);
+    closeAnnouncementBar,
-    setClosed(true);
+  } = useAnnouncementBarContext();
-  };
 
-  useEffect(() => {
+  if (!content || isAnnouncementBarClosed) {
-    const viewedId = localStorage.getItem(STORAGE_ID_KEY);
-    const isNewAnnouncement = id !== viewedId;
-
-    localStorage.setItem(STORAGE_ID_KEY, id);
-
-    if (isNewAnnouncement) {
-      localStorage.setItem(STORAGE_DISMISS_KEY, false);
-    }
-
-    if (
-      isNewAnnouncement ||
-      localStorage.getItem(STORAGE_DISMISS_KEY) === 'false'
-    ) {
-      setClosed(false);
-    }
-  }, []);
-
-  if (!content || isClosed) {
     return null;
   }
 
@@ -59,7 +38,7 @@ function AnnouncementBar() {
       <button
         type="button"
         className={styles.announcementBarClose}
-        onClick={handleClose}
+        onClick={closeAnnouncementBar}
         aria-label="Close">
         <span aria-hidden="true">&times;</span>
       </button>

packages/docusaurus-theme-classic/src/theme/AnnouncementBar/styles.module.css

@@ -5,13 +5,24 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+:root {
+  --docusaurus-announcement-bar-height: auto;
+}
+
 .announcementBar {
   position: relative;
   width: 100%;
+  height: var(--docusaurus-announcement-bar-height);
   background-color: var(--ifm-color-primary);
   color: var(--ifm-color-black);
 }
 
+@media screen and (min-width: 1024px) {
+  :root {
+    --docusaurus-announcement-bar-height: 30px;
+  }
+}
+
 .announcementBarClose {
   position: absolute;
   right: 0;

packages/docusaurus-theme-classic/src/theme/AnnouncementBarContext.js

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {createContext} from 'react';
+
+const AnnouncementBarContext = createContext({
+  isAnnouncementBarClosed: false,
+  closeAnnouncementBar: () => {},
+});
+
+export default AnnouncementBarContext;

packages/docusaurus-theme-classic/src/theme/AnnouncementBarProvider/index.js

@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import React from 'react';
+
+import AnnouncementBarContext from '@theme/AnnouncementBarContext';
+import useAnnouncementBar from '@theme/hooks/useAnnouncementBar';
+
+function AnnouncementBarProvider(props) {
+  const {isAnnouncementBarClosed, closeAnnouncementBar} = useAnnouncementBar();
+
+  return (
+    <AnnouncementBarContext.Provider
+      value={{isAnnouncementBarClosed, closeAnnouncementBar}}>
+      {props.children}
+    </AnnouncementBarContext.Provider>
+  );
+}
+
+export default AnnouncementBarProvider;

packages/docusaurus-theme-classic/src/theme/DocSidebar/index.js

@@ -8,8 +8,10 @@
 import React, {useState, useCallback} from 'react';
 import classnames from 'classnames';
 import useDocusaurusContext from '@docusaurus/useDocusaurusContext';
+import useAnnouncementBarContext from '@theme/hooks/useAnnouncementBarContext';
 import useLockBodyScroll from '@theme/hooks/useLockBodyScroll';
 import useLogo from '@theme/hooks/useLogo';
+import useScrollPosition from '@theme/hooks/useScrollPosition';
 import Link from '@docusaurus/Link';
 import isInternalUrl from '@docusaurus/isInternalUrl';
 
@@ -134,6 +136,8 @@ function DocSidebar(props) {
     isClient,
   } = useDocusaurusContext();
   const {logoLink, logoLinkProps, logoImageUrl, logoAlt} = useLogo();
+  const {isAnnouncementBarClosed} = useAnnouncementBarContext();
+  const {scrollY} = useScrollPosition();
 
   const {
     docsSidebars,
@@ -163,7 +167,10 @@ function DocSidebar(props) {
   }
 
   return (
-    <div className={styles.sidebar}>
+    <div
+      className={classnames(styles.sidebar, {
+        [styles.sidebarWithHideableNavbar]: hideOnScroll,
+      })}>
       {hideOnScroll && (
         <Link
           tabIndex="-1"
@@ -179,6 +186,8 @@ function DocSidebar(props) {
       <div
         className={classnames('menu', 'menu--responsive', styles.menu, {
           'menu--show': showResponsiveSidebar,
+          [styles.menuWithAnnouncementBar]:
+            !isAnnouncementBarClosed && scrollY === 0,
         })}>
         <button
           aria-label={showResponsiveSidebar ? 'Close Menu' : 'Open Menu'}

packages/docusaurus-theme-classic/src/theme/DocSidebar/styles.module.css

@@ -7,6 +7,8 @@
 
 @media (min-width: 997px) {
   .sidebar {
+    display: flex;
+    flex-direction: column;
     height: 100vh;
     overflow-y: auto;
     position: sticky;
@@ -14,6 +16,10 @@
     padding-top: var(--ifm-navbar-height);
   }
 
+  .sidebarWithHideableNavbar {
+    padding-top: 0;
+  }
+
   .sidebar::-webkit-scrollbar {
     width: 7px;
   }
@@ -35,10 +41,9 @@
   .sidebarLogo {
     display: flex !important;
     align-items: center;
-    position: absolute;
-    top: 0;
     margin: 0 var(--ifm-navbar-padding-horizontal);
-    height: var(--ifm-navbar-height);
+    min-height: var(--ifm-navbar-height);
+    max-height: var(--ifm-navbar-height);
     color: inherit !important;
     text-decoration: none !important;
   }
@@ -49,8 +54,13 @@
   }
 
   .menu {
+    flex-grow: 1;
     padding: 0.5rem;
   }
+
+  .menuWithAnnouncementBar {
+    margin-bottom: var(--docusaurus-announcement-bar-height);
+  }
 }
 
 .sidebarLogo {

packages/docusaurus-theme-classic/src/theme/Layout/index.js

@@ -13,6 +13,7 @@ import useBaseUrl from '@docusaurus/useBaseUrl';
 
 import ThemeProvider from '@theme/ThemeProvider';
 import TabGroupChoiceProvider from '@theme/TabGroupChoiceProvider';
+import AnnouncementBarProvider from '@theme/AnnouncementBarProvider';
 import AnnouncementBar from '@theme/AnnouncementBar';
 import Navbar from '@theme/Navbar';
 import Footer from '@theme/Footer';
@@ -50,6 +51,7 @@ function Layout(props) {
   return (
     <ThemeProvider>
       <TabGroupChoiceProvider>
+        <AnnouncementBarProvider>
           <Head>
             {/* TODO: Do not assume that it is in english language */}
             <html lang="en" />
@@ -70,7 +72,10 @@ function Layout(props) {
               <meta property="twitter:image" content={metaImageUrl} />
             )}
             {metaImage && (
-            <meta name="twitter:image:alt" content={`Image for ${metaTitle}`} />
+              <meta
+                name="twitter:image:alt"
+                content={`Image for ${metaTitle}`}
+              />
             )}
             {permalink && (
               <meta property="og:url" content={siteUrl + permalink} />
@@ -82,6 +87,7 @@ function Layout(props) {
           <Navbar />
           <div className="main-wrapper">{children}</div>
           {!noFooter && <Footer />}
+        </AnnouncementBarProvider>
       </TabGroupChoiceProvider>
     </ThemeProvider>
   );

packages/docusaurus-theme-classic/src/theme/hooks/useAnnouncementBar.js

@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {useState, useEffect} from 'react';
+import useDocusaurusContext from '@docusaurus/useDocusaurusContext';
+
+const STORAGE_DISMISS_KEY = 'docusaurus.announcement.dismiss';
+const STORAGE_ID_KEY = 'docusaurus.announcement.id';
+
+const useAnnouncementBar = () => {
+  const {
+    siteConfig: {
+      themeConfig: {
+        announcementBar: {id},
+      },
+    } = {},
+  } = useDocusaurusContext();
+  const [isClosed, setClosed] = useState(true);
+  const handleClose = () => {
+    localStorage.setItem(STORAGE_DISMISS_KEY, true);
+    setClosed(true);
+  };
+
+  useEffect(() => {
+    const viewedId = localStorage.getItem(STORAGE_ID_KEY);
+    const isNewAnnouncement = id !== viewedId;
+
+    localStorage.setItem(STORAGE_ID_KEY, id);
+
+    if (isNewAnnouncement) {
+      localStorage.setItem(STORAGE_DISMISS_KEY, false);
+    }
+
+    if (
+      isNewAnnouncement ||
+      localStorage.getItem(STORAGE_DISMISS_KEY) === 'false'
+    ) {
+      setClosed(false);
+    }
+  }, []);
+
+  return {
+    isAnnouncementBarClosed: isClosed,
+    closeAnnouncementBar: handleClose,
+  };
+};
+
+export default useAnnouncementBar;

packages/docusaurus-theme-classic/src/theme/hooks/useAnnouncementBarContext.js

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {useContext} from 'react';
+import AnnouncementBarContext from '@theme/AnnouncementBarContext';
+
+function useAnnouncementBarContext() {
+  return useContext(AnnouncementBarContext);
+}
+
+export default useAnnouncementBarContext;