style(v2): basic sidebar component (#1020)

v2/.eslintrc.js

@@ -13,11 +13,12 @@ module.exports = {
   rules: {
     'no-console': OFF,
     'func-names': OFF,
+    'react/jsx-closing-bracket-location': OFF, // Conflicts with Prettier.
     'react/jsx-filename-extension': OFF,
     'react/jsx-one-expression-per-line': OFF,
     'react/prop-types': OFF,
-    'react/destructuring-assignment': OFF, // too many lines
-    'import/no-unresolved': WARNING, // because it couldn't resolve webpack alias
+    'react/destructuring-assignment': OFF, // Too many lines.
+    'import/no-unresolved': WARNING, // Because it couldn't resolve webpack alias.
     'react/prefer-stateless-function': WARNING,
   },
 };

v2/lib/theme/Docs/index.js

@@ -3,50 +3,13 @@ import React from 'react';
 import {Link} from 'react-router-dom';
 import Helmet from 'react-helmet';
 
-import Layout from '@theme/Layout'; // eslint-disable-line
 import DocsPaginator from '@theme/DocsPaginator'; // eslint-disable-line
+import Layout from '@theme/Layout'; // eslint-disable-line
+import Sidebar from '@theme/Sidebar'; // eslint-disable-line
 
 import styles from './styles.css';
 
 export default class Docs extends React.Component {
-  renderSidebar(metadata, docsSidebars, docsMetadatas) {
-    const {sidebar, language, id: thisID} = metadata;
-    if (!sidebar || !docsSidebars) {
-      return null;
-    }
-    const thisSidebar = docsSidebars[sidebar];
-    return (
-      thisSidebar &&
-      Object.keys(thisSidebar).map(categoryName => {
-        return (
-          <div className="navGroup" key={categoryName}>
-            <h3 className="navGroupCategoryTitle">{categoryName}</h3>
-            <ul>
-              {thisSidebar[categoryName].map(rawLinkID => {
-                const linkID = (language ? `${language}-` : '') + rawLinkID;
-                const linkMetadata = docsMetadatas[linkID];
-                if (!linkMetadata) {
-                  throw new Error(
-                    `Improper sidebars.json file, document with id '${linkID}' not found.`,
-                  );
-                }
-                const linkClassName =
-                  linkID === thisID ? 'navListItemActive' : 'navListItem';
-                return (
-                  <li className={linkClassName} key={linkID}>
-                    <Link className="navItem" to={linkMetadata.permalink}>
-                      {linkMetadata.sidebar_label || linkMetadata.title}
-                    </Link>
-                  </li>
-                );
-              })}
-            </ul>
-          </div>
-        );
-      })
-    );
-  }
-
   render() {
     const {
       route,
@@ -64,9 +27,17 @@ export default class Docs extends React.Component {
           {language && <meta name="docsearch:language" content={language} />}
           {version && <meta name="docsearch:version" content={version} />}
         </Helmet>
-        <div>{this.renderSidebar(metadata, docsSidebars, docsMetadatas)}</div>
-        <div className={styles.mainContainer}>{this.props.children}</div>
-        <DocsPaginator docsMetadatas={docsMetadatas} metadata={metadata} />
+        <div className={styles.mainContainer}>
+          <Sidebar
+            docsMetadatas={docsMetadatas}
+            docsSidebars={docsSidebars}
+            metadata={metadata}
+          />
+          <div className={styles.docContent}>
+            {this.props.children}
+            <DocsPaginator docsMetadatas={docsMetadatas} metadata={metadata} />
+          </div>
+        </div>
       </Layout>
     );
   }

v2/lib/theme/Docs/styles.css

@@ -1,10 +1,13 @@
 .mainContainer {
   display: flex;
   flex-direction: row;
-  flex-wrap: wrap;
-  margin-top: 40px;
   margin-bottom: 30px;
   margin-left: auto;
   margin-right: auto;
-  justify-content: center;
-}
+  margin-top: 40px;
+  justify-content: space-between;
+}
+
+.docContent {
+  flex-grow: 1;
+}

v2/lib/theme/Layout/index.js

@@ -1,6 +1,8 @@
 import React from 'react';
 import Footer from '@theme/Footer'; // eslint-disable-line
 
+import './styles.css';
+
 /* eslint-disable react/prefer-stateless-function */
 export default class Layout extends React.Component {
   render() {

v2/lib/theme/Layout/styles.css

@@ -0,0 +1,4 @@
+:global(body) {
+  margin: 0;
+  padding: 0;
+}

v2/lib/theme/Sidebar/index.js

@@ -0,0 +1,51 @@
+import React from 'react';
+import {Link} from 'react-router-dom';
+
+import classnames from 'classnames';
+
+import styles from './styles.css';
+
+function Sidebar(props) {
+  const {metadata, docsSidebars, docsMetadatas} = props;
+  const {sidebar, language, id: thisID} = metadata;
+  if (!sidebar || !docsSidebars) {
+    return null;
+  }
+  const thisSidebar = docsSidebars[sidebar];
+  return (
+    thisSidebar && (
+      <div className={styles.sidebar}>
+        {Object.keys(thisSidebar).map(categoryName => (
+          <div className={styles.sidebarGroup} key={categoryName}>
+            <h3 className={styles.sidebarGroupTitle}>{categoryName}</h3>
+            <ul className={styles.sidebarList}>
+              {thisSidebar[categoryName].map(rawLinkID => {
+                const linkID = (language ? `${language}-` : '') + rawLinkID;
+                const linkMetadata = docsMetadatas[linkID];
+                if (!linkMetadata) {
+                  throw new Error(
+                    `Improper sidebars.json file, document with id '${linkID}' not found.`,
+                  );
+                }
+                const activeItem = linkID === thisID;
+                return (
+                  <li key={linkID}>
+                    <Link
+                      className={classnames(styles.sidebarLink, {
+                        [styles.sidebarLinkActive]: activeItem,
+                      })}
+                      to={linkMetadata.permalink}>
+                      {linkMetadata.sidebar_label || linkMetadata.title}
+                    </Link>
+                  </li>
+                );
+              })}
+            </ul>
+          </div>
+        ))}
+      </div>
+    )
+  );
+}
+
+export default Sidebar;

v2/lib/theme/Sidebar/styles.css

@@ -0,0 +1,30 @@
+.sidebar {
+  width: 300px;
+  padding: 0 20px;
+}
+
+.sidebarGroup {
+  margin-bottom: 20px;
+}
+
+.sidebarGroupTitle {
+  margin: 0;
+}
+
+.sidebarList {
+  list-style-type: none;
+  padding-left: 0;
+}
+
+.sidebarLink {
+  color: #717171;
+  display: block;
+  padding: 8px 0;
+  text-decoration: none;
+  transition: color .3s;
+}
+
+.sidebarLink:hover,
+.sidebarLinkActive {
+  color: #2e8555;
+}