Disable Search Box if CDN is down (#9)

src/components/LayoutHeader/DocSearch.js

@@ -0,0 +1,110 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * @emails react-core
+ */
+
+import React, {Component} from 'react';
+import {colors, media} from 'theme';
+
+class DocSearch extends Component {
+  state = {
+    enabled: true,
+  };
+  componentDidMount() {
+    // Initialize Algolia search.
+    // TODO Is this expensive? Should it be deferred until a user is about to search?
+    // eslint-disable-next-line no-undef
+    if (window.docsearch) {
+      window.docsearch({
+        apiKey: '36221914cce388c46d0420343e0bb32e',
+        indexName: 'react',
+        inputSelector: '#algolia-doc-search',
+      });
+    } else {
+      console.warn('Search has failed to load and now is being disabled');
+      this.setState({enabled: false});
+    }
+  }
+
+  render() {
+    const {enabled} = this.state;
+
+    return enabled ? (
+      <form
+        css={{
+          display: 'flex',
+          flex: '0 0 auto',
+          flexDirection: 'row',
+          alignItems: 'center',
+          paddingLeft: '0.5rem',
+          paddingRight: '0.5rem',
+
+          [media.lessThan('small')]: {
+            justifyContent: 'flex-end',
+          },
+          [media.lessThan('large')]: {
+            marginRight: 10,
+          },
+          [media.between('small', 'medium')]: {
+            width: 'calc(100% / 3)',
+          },
+          [media.between('medium', 'xlarge')]: {
+            width: 'calc(100% / 6)',
+          },
+          [media.greaterThan('small')]: {
+            minWidth: 120,
+          },
+        }}>
+        <input
+          css={{
+            appearance: 'none',
+            background: 'transparent',
+            border: 0,
+            color: colors.white,
+            fontSize: 18,
+            fontWeight: 300,
+            fontFamily: 'inherit',
+            position: 'relative',
+            padding: '5px 5px 5px 29px',
+            backgroundImage: 'url(/search.svg)',
+            backgroundSize: '16px 16px',
+            backgroundRepeat: 'no-repeat',
+            backgroundPositionY: 'center',
+            backgroundPositionX: '5px',
+
+            ':focus': {
+              outline: 0,
+              backgroundColor: colors.lighter,
+              borderRadius: '0.25rem',
+            },
+
+            [media.lessThan('large')]: {
+              fontSize: 16,
+            },
+            [media.greaterThan('small')]: {
+              width: '100%',
+            },
+            [media.lessThan('small')]: {
+              width: '16px',
+              transition: 'width 0.2s ease, padding 0.2s ease',
+              paddingLeft: '16px',
+
+              ':focus': {
+                paddingLeft: '29px',
+                width: '8rem',
+                outline: 'none',
+              },
+            },
+          }}
+          id="algolia-doc-search"
+          type="search"
+          placeholder="Search docs"
+          aria-label="Search docs"
+        />
+      </form>
+    ) : null;
+  }
+}
+
+export default DocSearch;

src/components/LayoutHeader/Header.js

@@ -13,6 +13,7 @@ import React from 'react';
 import {colors, fonts, media} from 'theme';
 import {version} from 'site-constants';
 import ExternalLinkSvg from 'templates/components/ExternalLinkSvg';
+import DocSearch from './DocSearch';
 
 import logoSvg from 'icons/logo.svg';
 
@@ -135,78 +136,7 @@ const Header = ({location}) => (
           />
         </nav>
 
-        <form
-          css={{
-            display: 'flex',
-            flex: '0 0 auto',
-            flexDirection: 'row',
-            alignItems: 'center',
-            paddingLeft: '0.5rem',
-            paddingRight: '0.5rem',
-
-            [media.lessThan('small')]: {
-              justifyContent: 'flex-end',
-            },
-            [media.lessThan('large')]: {
-              marginRight: 10,
-            },
-            [media.between('small', 'medium')]: {
-              width: 'calc(100% / 3)',
-            },
-            [media.between('medium', 'xlarge')]: {
-              width: 'calc(100% / 6)',
-            },
-            [media.greaterThan('small')]: {
-              minWidth: 120,
-            },
-          }}>
-          <input
-            css={{
-              appearance: 'none',
-              background: 'transparent',
-              border: 0,
-              color: colors.white,
-              fontSize: 18,
-              fontWeight: 300,
-              fontFamily: 'inherit',
-              position: 'relative',
-              padding: '5px 5px 5px 29px',
-              backgroundImage: 'url(/search.svg)',
-              backgroundSize: '16px 16px',
-              backgroundRepeat: 'no-repeat',
-              backgroundPositionY: 'center',
-              backgroundPositionX: '5px',
-
-              ':focus': {
-                outline: 0,
-                backgroundColor: colors.lighter,
-                borderRadius: '0.25rem',
-              },
-
-              [media.lessThan('large')]: {
-                fontSize: 16,
-              },
-              [media.greaterThan('small')]: {
-                width: '100%',
-              },
-              [media.lessThan('small')]: {
-                width: '16px',
-                transition: 'width 0.2s ease, padding 0.2s ease',
-                paddingLeft: '16px',
-
-                ':focus': {
-                  paddingLeft: '29px',
-                  width: '8rem',
-                  outline: 'none',
-                },
-              },
-            }}
-            id="algolia-doc-search"
-            type="search"
-            placeholder="Search docs"
-            aria-label="Search docs"
-          />
-        </form>
+        <DocSearch />
 
         <div
           css={{

src/layouts/index.js

@@ -24,17 +24,6 @@ import 'css/reset.css';
 import 'css/algolia.css';
 
 class Template extends Component {
-  componentDidMount() {
-    // Initialize Algolia search.
-    // TODO Is this expensive? Should it be deferred until a user is about to search?
-    // eslint-disable-next-line no-undef
-    docsearch({
-      apiKey: '36221914cce388c46d0420343e0bb32e',
-      indexName: 'react',
-      inputSelector: '#algolia-doc-search',
-    });
-  }
-
   render() {
     const {children, location} = this.props;