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items_cloze_ClozeRenderer.js.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Source: items/cloze/ClozeRenderer.js</title>
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<script src="scripts/prettify/lang-css.js"> </script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
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</head>
<body>
<div id="main">
<h1 class="page-title">Source: items/cloze/ClozeRenderer.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>import React, { useState, useEffect, useMemo } from 'react'
import { ScrollView, View } from 'react-native'
import { Colors } from '../../constants/Colors'
import { createStyleSheet } from '../../styles/createStyleSheet'
import { ClozeTokenizer } from './ClozeTokenizer'
import { ClozeHelpers } from './ClozeHelpers'
import { UndefinedScore } from '../../scoring/UndefinedScore'
import { Layout } from '../../constants/Layout'
import { Log } from '../../infrastructure/Log'
import { ClozeRendererSelect } from './ClozeRendererSelect'
import { useTts } from '../../components/Tts'
import { LeaText } from '../../components/LeaText'
import { ClozeRendererBlank } from './ClozeRendererBlank'
import { isDefined } from '../../utils/object/isDefined'
import { mergeStyles } from '../../styles/mergeStyles'
import { createScoringSummaryForInput } from './createScoringSummaryForInput'
const debug = Log.create('ClozeRenderer', 'debug', true)
/**
*
* @param props {object}
* @param props.dimensionColor {string}
* @param props.contentId {string}
* @param props.value {object}
* @param props.submitResponse {function}
* @return {JSX.Element}
* @constructor
*/
export const ClozeRenderer = props => {
const { dimensionColor, contentId, value } = props
const [entered, setEntered] = useState({})
const [compared, setCompared] = useState({})
const { isTable, hasTableBorder /* scoring */ } = value
// on contentId changed, do:
//
// 1. submit an initial response with full-empty data
// to indicate this item has "started"
//
// 2. clear all selections when the content id changes
// which happens, for example, if we move to the next page
useEffect(() => {
setEntered({})
setCompared({})
props.submitResponse({
responses: tokenIndexes.map(() => UndefinedScore),
data: props
})
}, [props.contentId])
// on showCorrectResponse, do:
// compare responses with the correct responses when
// the parent decided to activate {showCorrectResponse}
useEffect(() => {
if (!props.showCorrectResponse || !props.scoreResult) {
return
}
const compareValues = {}
/*
{
index: 0,
score: {
sum: 0, // sum of all scores, where 0 = false, 1 = true
max: 0, // sum of all possible true-scores
avg: 0 // computed average
},
color: "#5BB984", // CompareState.getColor
actual: 'moo',
entries: [
{"actual": "moo", "color": "#5BB984", "expected": /^moo$/, "score": 1}
]
}
*/
tokenIndexes.forEach(itemIndex => {
compareValues[itemIndex] = createScoringSummaryForInput({
itemIndex,
actual: entered[itemIndex],
entries: props.scoreResult.filter(entry => entry.target === itemIndex)
})
})
debug('compareValues:')
Object.entries(compareValues).forEach(([key, value]) => debug(key, value))
setCompared(compareValues)
}, [props.showCorrectResponse])
// tokenization and parsing is an expensive process;
// we only need it once, for every new content to render
const { tokens, tokenIndexes } = useMemo(() => {
return ClozeTokenizer.tokenize(props.value)
}, [props.contentId])
const submitText = ({ text, index }) => {
const update = { ...entered }
update[index] = text
setEntered(update)
const responses = tokenIndexes.map(index => index in update ? update[index] : UndefinedScore)
return props.submitResponse({
responses,
data: props
})
}
const renderText = (token, index) => {
return token.value.split(/\s+/).map((word, wordIndex) => {
const key = `word-${index}-${wordIndex}`
return (<LeaText key={key} style={styles.word}>{word}</LeaText>)
})
}
const renderTokenGroup = (tokenGroup, groupIndex) => {
const groupKey = `token-group-${groupIndex}`
const renderTTS = () => tokenGroup.tts
? (<RenderTts text={tokenGroup.tts} color={dimensionColor} />)
: null
return (
<View style={styles.tokenWrap} key={groupKey}>
{renderTTS()}
{tokenGroup.value.map((token, index) => {
const key = `token-group-${groupIndex}-token-${index}`
const { flavor, itemIndex } = token
const hasNext = itemIndex < tokenIndexes.length - 1
const compareValue = (
props.showCorrectResponse &&
isDefined(itemIndex) &&
compared[itemIndex]
)
const blanksId = `${contentId}-${itemIndex}`
const blankStyle = isTable
? { borderWidth: 0.5 }
: null
if (ClozeHelpers.isBlank(flavor)) {
return (
<ClozeRendererBlank
key={key}
blanksId={blanksId}
compare={compareValue}
color={dimensionColor}
original={token.value}
style={blankStyle}
hasNext={hasNext}
hasPrefix={token.hasPre}
hasSuffix={token.hasSuf}
pattern={tokenGroup.pattern}
onSubmit={text => {
if (text) {
submitText({ text, index: itemIndex })
}
}}
/>
)
}
if (ClozeHelpers.isEmpty(flavor)) {
return (
<ClozeRendererBlank
key={key}
blanksId={blanksId}
compare={undefined}
color={dimensionColor}
original={token.value}
style={blankStyle}
hasNext={hasNext}
isMultiline
hasPrefix={token.hasPre}
hasSuffix={token.hasSuf}
pattern={tokenGroup.pattern}
onSubmit={() => {}}
/>
)
}
if (ClozeHelpers.isSelect(flavor)) {
return (
<ClozeRendererSelect
key={key}
color={dimensionColor}
style={styles.token}
value={itemIndex in entered ? entered[itemIndex] : null}
compare={compareValue}
options={token.value}
onSelect={(option, index) => submitText({
text: index,
index: itemIndex
})}
/>
)
}
if (ClozeHelpers.isText(flavor)) {
return (<LeaText key={index} style={styles.token}>{token.value}</LeaText>)
}
if (token.value) {
return renderText(token, index)
}
return null
})}
</View>
)
}
const renderCell = (entry, rowIndex, colIndex) => {
if (entry.isToken && Array.isArray(entry.value)) {
return renderTokenGroup(entry, `${rowIndex}${colIndex}`)
}
else if (!entry.isCellSkip) {
return (
<LeaText
fitSize
numberOfLines={1}
style={styles.cellText}
>{entry.value}
</LeaText>
)
}
else {
return (<LeaText style={styles.cellSkip} />)
}
}
if (isTable) {
const renderTable = () => (
<View style={[styles.container, props.style]}>
{tokens.map((row, rowIndex) => {
return (
<View style={styles.row} key={`row-${rowIndex}`}>
{row.map((entry, colIndex) => {
return (
<View
style={getCellStyle(hasTableBorder, entry.cellBorder)}
key={`row-${rowIndex}-col-${colIndex}`}
>
{renderCell(entry, rowIndex, colIndex)}
</View>
)
})}
</View>
)
})}
</View>
)
let isBigTable = false
tokens.forEach(row => {
if (row.length >= 8) {
isBigTable = true
}
})
if (!isBigTable) {
return renderTable()
}
return (
<ScrollView
horizontal
showsHorizontalScrollIndicator
persistentScrollbar
>
{renderTable()}
</ScrollView>
)
}
return (
<View style={[styles.container, props.style]}>
<View style={styles.tokenContainer}>
{tokens.map((entry, index) => {
if (entry.isEmpty) { return null }
// newlines can be used to explicitly break
// using a fully stretched flex box
if (entry.isNewLine) {
return (<View key={index} style={styles.break} />)
}
// token can be blanks, selects, empties and text
// that is associated with other token, forming a group
if (entry.isToken) {
return (
<View key={index} style={styles.token}>
{renderTokenGroup(entry, index)}
</View>
)
}
// plain text that is not associated to any token
if (entry.value) {
return renderText(entry, index)
}
// no value should cause no render
return null
})}
</View>
</View>
)
}
// ============================================================================
//
// INTERNAL / PRIVATE
//
// ============================================================================
const RenderTts = ({ text, color }) => {
const { Tts } = useTts()
if (!text?.length) {
return null
}
return (<Tts color={color} text={text} dontShowText />)
}
const getCellStyle = (hasTableBorder, cellBorder) => {
if (hasTableBorder) {
return mergeStyles(styles.cell, styles.cellBorder)
}
if (cellBorder === 'top') {
return mergeStyles(styles.cell, styles.cellBorderTop)
}
if (cellBorder === 'bottom') {
return mergeStyles(styles.cell, styles.cellBorderBottom)
}
return styles.cell
}
const styles = createStyleSheet({
container: {
flex: 1,
marginTop: 25,
marginBottom: 25
},
ttsContainer: {
width: '100%',
alignContent: 'center'
},
comparecontainer: {
width: '100%',
flexDirection: 'row',
flexWrap: 'wrap',
marginTop: 5
},
tokenContainer: {
width: '100%',
flexDirection: 'row',
flexWrap: 'wrap'
},
tokenWrap: {
flexDirection: 'row'
},
select: {
backgroundColor: '#f0a'
},
selectItem: {
padding: 5,
fontSize: 18,
fontFamily: 'semicolon',
color: Colors.dark,
backgroundColor: '#fff'
},
token: {
...Layout.defaultFont(),
backgroundColor: '#fff',
alignSelf: 'center',
borderColor: '#00f',
padding: 1
},
word: {
...Layout.defaultFont(),
padding: 1,
backgroundColor: '#fff',
alignSelf: 'center',
borderColor: '#0f0',
paddingLeft: 4,
paddingRight: 4
},
selected: {
backgroundColor: Colors.primary,
color: Colors.light
},
break: {
alignSelf: 'stretch',
width: '100%'
},
right: {
backgroundColor: Colors.success,
color: Colors.light
},
wrong: {
backgroundColor: Colors.danger,
color: Colors.light
},
missing: {
backgroundColor: Colors.warning,
color: Colors.light
},
table: {
flex: 1,
flexDirection: 'column'
},
row: {
flex: 1,
flexGrow: 1,
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'center'
},
cell: {
padding: 5,
flex: 1,
width: 45,
flexGrow: 1,
height: '100%',
alignItems: 'center',
justifyContent: 'center'
},
cellBorder: {
borderWidth: 1,
borderColor: Colors.light
},
cellBorderTop: {
borderTopWidth: 1,
borderTopColor: Colors.gray
},
cellBorderBottom: {
borderBottomWidth: 1,
borderBottomColor: Colors.gray
},
hscroll: {
flex: 0,
flexDirection: 'column',
borderColor: '#0f0',
borderWidth: 1,
height: '100%'
},
cellText: {
borderColor: '#0f0'
},
cellSkip: {
borderColor: '#f0f'
}
})
</code></pre>
</article>
</section>
</div>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="AuthenticationError.html">AuthenticationError</a></li><li><a href="ClozeRenderer.html">ClozeRenderer</a></li><li><a href="ConnectItemRenderer.html">ConnectItemRenderer</a></li><li><a href="ConnectionError.html">ConnectionError</a></li><li><a href="ImageRenderer.html">ImageRenderer</a></li><li><a href="LeaCollection.html">LeaCollection</a></li><li><a href="MeteorError_MeteorError.html">MeteorError</a></li><li><a href="SyncScreen.html">SyncScreen</a></li><li><a href="UnitContentElementFactory.html">UnitContentElementFactory</a></li></ul><h3>Global</h3><ul><li><a href="global.html#AccountInfo">AccountInfo</a></li><li><a href="global.html#AchievementsScreen">AchievementsScreen</a></li><li><a href="global.html#ActionButton">ActionButton</a></li><li><a href="global.html#App">App</a></li><li><a href="global.html#AppSession">AppSession</a></li><li><a href="global.html#CharacterInput">CharacterInput</a></li><li><a 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