taihu/app/containers/LanguageProvider/index.tsx

/*
 * <<
 * Davinci
 * ==
 * Copyright (C) 2016 - 2017 EDP
 * ==
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * >>
 */

/*
 *
 * LanguageProvider
 *
 * this component connects the redux state language locale to the
 * IntlProvider component and i18n messages (loaded from `app/translations`)
 */

import React from 'react'
import { connect } from 'react-redux'
import { createSelector } from 'reselect'
import { IntlProvider } from 'react-intl'

import { makeSelectLocale } from './selectors'

interface ILanguageProviderProps {
  locale?: string
  key?: any
  children: JSX.Element
  messages?: {}
}

export class LanguageProvider extends React.PureComponent <ILanguageProviderProps, {}> { // eslint-disable-line react/prefer-stateless-function
  public render () {
    return (
      <IntlProvider locale={this.props.locale} key={this.props.locale} messages={this.props.messages[this.props.locale]}>
        {React.Children.only(this.props.children)}
      </IntlProvider>
    )
  }
}


const mapStateToProps = createSelector(
  makeSelectLocale(),
  (locale) => ({ locale })
)

export default connect<{}, {}, ILanguageProviderProps>(mapStateToProps, null)(LanguageProvider)