1 | import React from 'react';
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2 |
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3 |
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4 |
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5 | var state = {
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6 | messages: {},
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7 | locale: {name: 'en', pluralFn: (c) => c === 1 ? 'one' : 'other'}
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8 | };
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9 |
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10 |
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11 | function setMessages(messages) {
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12 | state.messages = messages;
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13 | }
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14 |
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15 | function setLocale(locale) {
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16 | state.locale = locale;
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17 | }
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18 |
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19 |
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20 | function i18n(original) {
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21 | let translated = state.messages[original];
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22 | return translated ? translated() : original;
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23 | }
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24 |
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25 |
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26 | class I18N extends React.Component {
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27 | render() {
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28 | let renderer = state.messages[this.props.message];
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29 | if (renderer) {
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30 | let rendered = renderer.apply(this.props.context, this.props.args);
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31 |
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32 |
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33 | if (Object.prototype.toString.call(rendered) === '[object String]') {
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34 | return <span>{rendered}</span>;
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35 | } else {
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36 | return rendered;
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37 | }
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38 | }
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39 | return this.props.fallback.call(this.props.context);
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40 | }
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41 | }
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42 |
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43 |
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44 | class Match extends React.Component {
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45 | render() {
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46 | return <span>{this.props.children}</span>;
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47 | }
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48 | }
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49 |
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50 | Match._isMatch = true;
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51 | Match.propTypes = {
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52 | when: React.PropTypes.string
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53 | };
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54 |
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55 |
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56 | class Pluralize extends React.Component {
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57 |
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58 | classifyMatch(match) {
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59 | if (match && match.startsWith('=')) {
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60 | return parseInt(match.slice(1), 10);
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61 | } else {
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62 | return match;
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63 | }
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64 | }
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65 |
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66 | classifyMatches(matches, match) {
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67 | matches[this.classifyMatch(match.props.when)] = match;
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68 | return matches;
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69 | }
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70 |
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71 | render() {
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72 |
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73 |
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74 | let children = [];
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75 | React.Children.forEach(this.props.children, c => children.push(c));
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76 | children = children.reduce(this.classifyMatches.bind(this), {});
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77 |
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78 | let form = state.locale.pluralFn(this.props.on);
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79 | let match = children[this.props.on] || children[form];
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80 | if (!match) {
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81 | throw new Error("Missing plural form: " + form);
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82 | }
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83 | return match;
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84 | }
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85 | }
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86 |
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87 |
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88 | Pluralize.propTypes = {
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89 | on: React.PropTypes.number,
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90 | children: (props, propName, componentName) => {
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91 | let nonTextChildren = props[propName].filter(c => Object.prototype.toString.call(c) !== '[object String]');
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92 | let nonMatchChildren = nonTextChildren.filter(c => !c.type._isMatch);
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93 | if (nonMatchChildren.length) {
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94 | return new Error("Pluralize given children other than a Match: " + nonMatchChildren.map(c => c.type.displayName || c.type.name || c.type));
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95 | }
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96 | }
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97 | }
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98 |
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99 |
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100 | export default {
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101 | i18n,
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102 | I18N,
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103 | setMessages,
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104 | setLocale,
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105 | Pluralize,
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106 | Match,
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107 | Format: ['Pluralize', 'Match']
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108 | };
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