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import React, { Component } from 'react' |
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const listStyle = { |
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listStyle: 'none' |
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} |
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type OptionProps = { |
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value: string |
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name: string |
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} |
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class LanguageOption extends Component<OptionProps> { |
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render() { |
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return ( |
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<option value={this.props.value}>{this.props.name}</option> |
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) |
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} |
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} |
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type LanguageDropdownProps = { |
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onChangeLanguage: (language: string) => void |
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} |
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type LanguageDropdownState = {} |
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class LanguageDropdown extends Component<LanguageDropdownProps, LanguageDropdownState> { |
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getLanguageList(): OptionProps[] { |
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const en = { |
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value: "en", |
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name: "🇺🇸 English" |
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} |
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const se = { |
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value: "se", |
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name: "🇸🇪 Swedish" |
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} |
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const id = { |
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value: "id", |
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name: "🇮🇩 Indonesian" |
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} |
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const fr = { |
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value: "fr", |
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name: "🇫🇷 Français" |
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} |
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const de = { |
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value: "de", |
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name: "🇩🇪 Deutsch" |
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} |
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const zh = { |
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value: "zh", |
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name: "🇨🇳 中国人" |
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} |
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const es = { |
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value: "es", |
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name: "🇪🇸 Español" |
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} |
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const ja = { |
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value: "ja", |
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name: "🇯🇵 日本語" |
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} |
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var languageList: OptionProps[] = [] |
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languageList.push(id) |
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languageList.push(se) |
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languageList.push(en) |
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languageList.push(de) |
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languageList.push(fr) |
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languageList.push(zh) |
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languageList.push(es) |
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languageList.push(ja) |
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return this.shuffle(languageList) |
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} |
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shuffle(array: any[]) { |
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var currentIndex = array.length, temporaryValue, randomIndex; |
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// While there remain elements to shuffle... |
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while (0 !== currentIndex) { |
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// Pick a remaining element... |
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randomIndex = Math.floor(Math.random() * currentIndex); |
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currentIndex -= 1; |
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// And swap it with the current element. |
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temporaryValue = array[currentIndex]; |
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array[currentIndex] = array[randomIndex]; |
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array[randomIndex] = temporaryValue; |
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} |
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return array; |
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} |
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render() { |
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var languageList = []; |
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for (let language of this.getLanguageList()) { |
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languageList.push(<LanguageOption name={language.name} value={language.value} key={language.value}/>); |
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} |
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return ( |
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<div> |
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<select style={listStyle} onChange={ e => this.props.onChangeLanguage(e.currentTarget.value) } defaultValue={"en"} > |
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{languageList} |
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</select> |
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</div> |
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) |
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} |
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} |
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export default LanguageDropdown; |