feat: use local HotKeys and allow editor escape

GlobalHotKeys were abandoned, because they were capturing events that
had called stopPropagation.  This meant that something needed to be in
focus, hence passing a ref of the HotKey DOM element to the Editor.

react-hotkeys has been updated to 2.0.0-pre9, because 2.0.0 captured
ctrl keypresses when asked for ctrl+enter

Currently only classic challenges can be executed by hotkey, but all
allow hotkey navigation

client/package-lock.json

@@ -16613,9 +16613,9 @@
       }
     },
     "react-hotkeys": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/react-hotkeys/-/react-hotkeys-2.0.0.tgz",
-      "integrity": "sha512-3n3OU8vLX/pfcJrR3xJ1zlww6KS1kEJt0Whxc4FiGV+MJrQ1mYSYI3qS/11d2MJDFm8IhOXMTFQirfu6AVOF6Q==",
+      "version": "2.0.0-pre9",
+      "resolved": "https://registry.npmjs.org/react-hotkeys/-/react-hotkeys-2.0.0-pre9.tgz",
+      "integrity": "sha512-YujzB+kGB5F6rq6/NkNN2t3uSwYfBsC9qWligGKyDe7roMSmzFYO2N88mwSc+9zmHhy/ZrDyB+aqbzVIaK8haw==",
       "requires": {
         "prop-types": "^15.6.1"
       },

client/package.json

@@ -53,7 +53,7 @@
     "react-final-form": "^6.3.0",
     "react-ga": "^2.6.0",
     "react-helmet": "^5.2.1",
-    "react-hotkeys": "^2.0.0",
+    "react-hotkeys": "^2.0.0-pre9",
     "react-identicons": "^1.1.7",
     "react-instantsearch-dom": "^5.7.0",
     "react-monaco-editor": "^0.30.1",

client/src/templates/Challenges/classic/Editor.js

@@ -3,7 +3,6 @@ import PropTypes from 'prop-types';
 import { bindActionCreators } from 'redux';
 import { connect } from 'react-redux';
 import { createSelector } from 'reselect';
-import { navigate } from 'gatsby';
 
 import { executeChallenge, updateFile } from '../redux';
 import { userSelector, isDonationModalOpenSelector } from '../../../redux';
@@ -13,13 +12,12 @@ const MonacoEditor = React.lazy(() => import('react-monaco-editor'));
 
 const propTypes = {
   canFocus: PropTypes.bool,
+  containerRef: PropTypes.any.isRequired,
   contents: PropTypes.string,
   dimensions: PropTypes.object,
   executeChallenge: PropTypes.func.isRequired,
   ext: PropTypes.string,
   fileKey: PropTypes.string,
-  nextChallengePath: PropTypes.string.isRequired,
-  prevChallengePath: PropTypes.string.isRequired,
   theme: PropTypes.string,
   updateFile: PropTypes.func.isRequired
 };
@@ -123,26 +121,13 @@ class Editor extends Component {
       run: this.props.executeChallenge
     });
     this._editor.addAction({
-      id: 'navigate-prev',
-      label: 'Navigate to previous challenge',
-      keybindings: [
-        /* eslint-disable no-bitwise */
-        monaco.KeyMod.chord(
-          monaco.KeyMod.CtrlCmd | monaco.KeyMod.Shift | monaco.KeyCode.US_COMMA
-        )
-      ],
-      run: () => navigate(this.props.prevChallengePath)
-    });
-    this._editor.addAction({
-      id: 'navigate-next',
-      label: 'Navigate to next challenge',
-      keybindings: [
-        /* eslint-disable no-bitwise */
-        monaco.KeyMod.chord(
-          monaco.KeyMod.CtrlCmd | monaco.KeyMod.Shift | monaco.KeyCode.US_DOT
-        )
-      ],
-      run: () => navigate(this.props.nextChallengePath)
+      id: 'leave-editor',
+      label: 'Leave editor',
+      keybindings: [monaco.KeyCode.Escape],
+      run: () => {
+        if (this.props.containerRef.current)
+          this.props.containerRef.current.focus();
+      }
     });
   };
 

client/src/templates/Challenges/classic/Show.js

@@ -19,6 +19,7 @@ import VideoModal from '../components/VideoModal';
 import ResetModal from '../components/ResetModal';
 import MobileLayout from './MobileLayout';
 import DesktopLayout from './DesktopLayout';
+import Hotkeys from '../components/Hotkeys';
 
 import { getGuideUrl } from '../utils';
 import { challengeTypes } from '../../../../utils/challengeTypes';
@@ -32,7 +33,8 @@ import {
   initTests,
   updateChallengeMeta,
   challengeMounted,
-  consoleOutputSelector
+  consoleOutputSelector,
+  executeChallenge
 } from '../redux';
 
 import './classic.css';
@@ -51,7 +53,8 @@ const mapDispatchToProps = dispatch =>
       initConsole,
       initTests,
       updateChallengeMeta,
-      challengeMounted
+      challengeMounted,
+      executeChallenge
     },
     dispatch
   );
@@ -62,6 +65,7 @@ const propTypes = {
   data: PropTypes.shape({
     challengeNode: ChallengeNode
   }),
+  executeChallenge: PropTypes.func.isRequired,
   files: PropTypes.shape({
     key: PropTypes.string
   }),
@@ -99,6 +103,8 @@ class ShowClassic extends Component {
     this.state = {
       resizing: false
     };
+
+    this.containerRef = React.createRef();
   }
   onResize() {
     this.setState({ resizing: true });
@@ -219,19 +225,13 @@ class ShowClassic extends Component {
   }
 
   renderEditor() {
-    const {
-      files,
-      pageContext: {
-        challengeMeta: { prevChallengePath, nextChallengePath }
-      }
-    } = this.props;
+    const { files } = this.props;
 
     const challengeFile = first(Object.keys(files).map(key => files[key]));
     return (
       challengeFile && (
         <Editor
-          nextChallengePath={nextChallengePath}
-          prevChallengePath={prevChallengePath}
+          containerRef={this.containerRef}
           {...challengeFile}
           fileKey={challengeFile.key}
         />
@@ -261,7 +261,20 @@ class ShowClassic extends Component {
 
   render() {
     const { forumTopicId, title } = this.getChallenge();
+    const {
+      executeChallenge,
+      pageContext: {
+        challengeMeta: { introPath, nextChallengePath, prevChallengePath }
+      }
+    } = this.props;
     return (
+      <Hotkeys
+        executeChallenge={executeChallenge}
+        innerRef={this.containerRef}
+        introPath={introPath}
+        nextChallengePath={nextChallengePath}
+        prevChallengePath={prevChallengePath}
+      >
         <LearnLayout>
           <Helmet
             title={`Learn ${this.getBlockNameTitle()} | freeCodeCamp.org`}
@@ -297,6 +310,7 @@ class ShowClassic extends Component {
           <VideoModal videoUrl={this.getVideoUrl()} />
           <ResetModal />
         </LearnLayout>
+      </Hotkeys>
     );
   }
 }

client/src/templates/Challenges/components/Challenge-Title.js

@@ -1,17 +1,10 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import Link from '../../../components/helpers/Link';
-import { GlobalHotKeys } from 'react-hotkeys';
-import { navigate } from 'gatsby';
 
 import './challenge-title.css';
 import GreenPass from '../../../assets/icons/GreenPass';
 
-const keyMap = {
-  NAVIGATE_PREV: ['ctrl+shift+<', 'cmd+shift+<'],
-  NAVIGATE_NEXT: ['ctrl+shift+>', 'cmd+shift+>']
-};
-
 const propTypes = {
   children: PropTypes.string,
   introPath: PropTypes.string,
@@ -29,13 +22,8 @@ function ChallengeTitle({
   prevChallengePath,
   showPrevNextBtns
 }) {
-  const handlers = {
-    NAVIGATE_PREV: () => navigate(prevChallengePath),
-    NAVIGATE_NEXT: () => navigate(nextChallengePath)
-  };
   return (
     <div className='challenge-title-wrap'>
-      <GlobalHotKeys handlers={handlers} keyMap={keyMap} />
       {showPrevNextBtns ? (
         <Link
           aria-label='Previous lesson'

client/src/templates/Challenges/components/Hotkeys.js

@@ -0,0 +1,46 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { HotKeys } from 'react-hotkeys';
+import { navigate } from 'gatsby';
+
+const keyMap = {
+  EXECUTE_CHALLENGE: 'ctrl+enter',
+  NAVIGATE_PREV: ['ctrl+left', 'cmd+left'],
+  NAVIGATE_NEXT: ['ctrl+right', 'cmd+right']
+};
+
+const propTypes = {
+  children: PropTypes.any,
+  executeChallenge: PropTypes.func,
+  innerRef: PropTypes.any,
+  introPath: PropTypes.string,
+  nextChallengePath: PropTypes.string,
+  prevChallengePath: PropTypes.string
+};
+
+function Hotkeys({
+  children,
+  executeChallenge,
+  introPath,
+  innerRef,
+  nextChallengePath,
+  prevChallengePath
+}) {
+  const handlers = {
+    EXECUTE_CHALLENGE: () => {
+      if (executeChallenge) executeChallenge();
+    },
+    NAVIGATE_PREV: () => navigate(prevChallengePath),
+    NAVIGATE_NEXT: () => navigate(introPath ? introPath : nextChallengePath)
+  };
+  return (
+    <HotKeys handlers={handlers} innerRef={innerRef} keyMap={keyMap}>
+      {children}
+    </HotKeys>
+  );
+}
+
+Hotkeys.displayName = 'Hotkeys';
+Hotkeys.propTypes = propTypes;
+
+export default Hotkeys;

client/src/templates/Challenges/projects/backend/Show.js

@@ -33,6 +33,7 @@ import { Form } from '../../../../components/formHelpers';
 import Spacer from '../../../../components/helpers/Spacer';
 import { ChallengeNode } from '../../../../redux/propTypes';
 import { isSignedInSelector } from '../../../../redux';
+import Hotkeys from '../../components/Hotkeys';
 
 import { backend } from '../../../../../utils/challengeTypes';
 
@@ -186,6 +187,11 @@ export class BackEnd extends Component {
     return (
       <LearnLayout>
         <Helmet title={`${blockNameTitle} | Learn | freeCodeCamp.org`} />
+        <Hotkeys
+          introPath={introPath}
+          nextChallengePath={nextChallengePath}
+          prevChallengePath={prevChallengePath}
+        />
         <Grid>
           <Row>
             <Col md={8} mdOffset={2} sm={10} smOffset={1} xs={12}>

client/src/templates/Challenges/projects/frontend/Show.js

@@ -24,6 +24,7 @@ import ProjectForm from '../ProjectForm';
 import ProjectToolPanel from '../Tool-Panel';
 import CompletionModal from '../../components/CompletionModal';
 import HelpModal from '../../components/HelpModal';
+import Hotkeys from '../../components/Hotkeys';
 
 const mapStateToProps = () => ({});
 const mapDispatchToProps = dispatch =>
@@ -110,6 +111,11 @@ export class Project extends Component {
     const blockNameTitle = `${blockName} - ${title}`;
     return (
       <LearnLayout>
+        <Hotkeys
+          introPath={introPath}
+          nextChallengePath={nextChallengePath}
+          prevChallengePath={prevChallengePath}
+        />
         <Helmet title={`${blockNameTitle} | Learn | freeCodeCamp.org`} />
         <Grid>
           <Row>