Add question and answer components.

src/components/question/question.css

+@import "../../css/units.css";
+@import "../../css/colors.css";
+
+.question-wrapper {
+    position: absolute;
+    bottom: 0;
+    left: 0;
+    width: 100%;
+}
+
+.question-container {
+    margin: $space;
+    border: 1px solid $form-border;
+    border-radius: $space;
+    border-width: 2px;
+    padding: 1rem;
+    background: white;
+}
+
+.question-label {
+    font-size: 0.75rem;
+    font-weight: bold;
+    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+    color: $text-primary;
+    padding-bottom: $space;
+}
+
+.question-input {
+    display: flex; /* Keeps the input from going outside this container */
+    position: relative;
+}
+
+.question-submit-button {
+    position: absolute;
+    top: calc($space / 2);
+    right: calc($space / 2);
+
+    width: calc(2rem - $space);
+    height: calc(2rem - $space);
+
+    border: none;
+    border-radius: 100%;
+
+    color: white;
+    background: $motion-primary;
+}
+
+/* Input overrides: width, font-weight and focus outline */
+.question-input > input {
+    width: 100%;
+    font-weight: normal;
+}
+
+.question-input > input:focus {
+    box-shadow: 0px 0px 0px 3px $motion-transparent;
+}

src/components/question/question.jsx

+import PropTypes from 'prop-types';
+import React from 'react';
+import styles from './question.css';
+import Input from '../forms/input.jsx';
+
+const QuestionComponent = props => {
+    const {
+        answer,
+        question,
+        onChange,
+        onClick,
+        onKeyPress
+    } = props;
+    return (
+        <div className={styles.questionWrapper}>
+            <div className={styles.questionContainer}>
+                {question ? (
+                    <div className={styles.questionLabel}>{question}</div>
+                ) : null}
+                <div className={styles.questionInput}>
+                    <Input
+                        autoFocus
+                        value={answer}
+                        onChange={onChange}
+                        onKeyPress={onKeyPress}
+                    />
+                    <button
+                        className={styles.questionSubmitButton}
+                        onClick={onClick}
+                    >
+                        ✔︎
+                    </button>
+                </div>
+            </div>
+        </div>
+    );
+};
+
+QuestionComponent.propTypes = {
+    answer: PropTypes.string,
+    onChange: PropTypes.func.isRequired,
+    onClick: PropTypes.func.isRequired,
+    onKeyPress: PropTypes.func.isRequired,
+    question: PropTypes.string
+};
+
+export default QuestionComponent;

src/components/stage/stage.jsx

@@ -5,6 +5,7 @@ import classNames from 'classnames';
 import Box from '../box/box.jsx';
 import Loupe from '../loupe/loupe.jsx';
 import MonitorList from '../../containers/monitor-list.jsx';
+import Question from '../../containers/question.jsx';
 import styles from './stage.css';
 
 const StageComponent = props => {
@@ -15,6 +16,8 @@ const StageComponent = props => {
         colorInfo,
         onDeactivateColorPicker,
         isColorPicking,
+        question,
+        onQuestionAnswered,
         ...boxProps
     } = props;
     return (
@@ -40,6 +43,12 @@ const StageComponent = props => {
                         <Loupe colorInfo={colorInfo} />
                     </Box>
                 ) : null}
+                {question === null ? null : (
+                    <Question
+                        question={question}
+                        onQuestionAnswered={onQuestionAnswered}
+                    />
+                )}
             </Box>
             {isColorPicking ? (
                 <Box
@@ -56,6 +65,8 @@ StageComponent.propTypes = {
     height: PropTypes.number,
     isColorPicking: PropTypes.bool,
     onDeactivateColorPicker: PropTypes.func,
+    onQuestionAnswered: PropTypes.func,
+    question: PropTypes.string,
     width: PropTypes.number
 };
 StageComponent.defaultProps = {

src/containers/question.jsx

+import PropTypes from 'prop-types';
+import React from 'react';
+import bindAll from 'lodash.bindall';
+import QuestionComponent from '../components/question/question.jsx';
+
+class Question extends React.Component {
+    constructor (props) {
+        super(props);
+        bindAll(this, [
+            'handleChange',
+            'handleKeyPress',
+            'handleSubmit'
+        ]);
+        this.state = {
+            answer: ''
+        };
+    }
+    handleChange (e) {
+        this.setState({answer: e.target.value});
+    }
+    handleKeyPress (event) {
+        if (event.key === 'Enter') this.handleSubmit();
+    }
+    handleSubmit () {
+        this.props.onQuestionAnswered(this.state.answer);
+    }
+    render () {
+        return (
+            <QuestionComponent
+                answer={this.state.answer}
+                question={this.props.question}
+                onChange={this.handleChange}
+                onClick={this.handleSubmit}
+                onKeyPress={this.handleKeyPress}
+            />
+        );
+    }
+}
+
+Question.propTypes = {
+    onQuestionAnswered: PropTypes.func.isRequired,
+    question: PropTypes.string
+};
+
+export default Question;

src/containers/stage.jsx

@@ -24,12 +24,14 @@ class Stage extends React.Component {
             'cancelMouseDownTimeout',
             'detachMouseEvents',
             'handleDoubleClick',
+            'handleQuestionAnswered',
             'onMouseUp',
             'onMouseMove',
             'onMouseDown',
             'onStartDrag',
             'onStopDrag',
             'updateRect',
+            'questionListener',
             'setCanvas'
         ]);
         this.state = {
@@ -38,7 +40,8 @@ class Stage extends React.Component {
             isDragging: false,
             dragOffset: null,
             dragId: null,
-            colorInfo: null
+            colorInfo: null,
+            question: null
         };
     }
     componentDidMount () {
@@ -47,12 +50,14 @@ class Stage extends React.Component {
         this.updateRect();
         this.renderer = new Renderer(this.canvas);
         this.props.vm.attachRenderer(this.renderer);
+        this.props.vm.runtime.addListener('QUESTION', this.questionListener);
     }
     shouldComponentUpdate (nextProps, nextState) {
         return this.props.width !== nextProps.width ||
             this.props.height !== nextProps.height ||
             this.props.isColorPicking !== nextProps.isColorPicking ||
-            this.state.colorInfo !== nextState.colorInfo;
+            this.state.colorInfo !== nextState.colorInfo ||
+            this.state.question !== nextState.question;
     }
     componentDidUpdate (prevProps) {
         if (this.props.isColorPicking && !prevProps.isColorPicking) {
@@ -66,6 +71,14 @@ class Stage extends React.Component {
         this.detachRectEvents();
         this.stopColorPickingLoop();
     }
+    questionListener (question) {
+        this.setState({question: question});
+    }
+    handleQuestionAnswered (answer) {
+        this.setState({question: null}, () => {
+            this.props.vm.runtime.emit('ANSWER', answer);
+        });
+    }
     startColorPickingLoop () {
         this.intervalId = setInterval(() => {
             this.setState({colorInfo: this.getColorInfo(this.pickX, this.pickY)});
@@ -251,7 +264,9 @@ class Stage extends React.Component {
             <StageComponent
                 canvasRef={this.setCanvas}
                 colorInfo={this.state.colorInfo}
+                question={this.state.question}
                 onDoubleClick={this.handleDoubleClick}
+                onQuestionAnswered={this.handleQuestionAnswered}
                 {...props}
             />
         );