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<?php |
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/** |
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* @link https://github.com/motion/yii2-language-provider |
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* @copyright Copyright (c) 2017-2018 Motion Web Production |
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* @license BSD 3-Clause License |
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*/ |
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namespace motion\i18n\helpers; |
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use Yii; |
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use yii\helpers\ArrayHelper; |
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/** |
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* Helper for making work with language provider easily. |
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* |
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* @author Vladimir Kuprienko <[email protected]> |
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* @since 2.1 |
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*/ |
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class LanguageHelper |
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{ |
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/** |
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* @var \motion\i18n\LanguageProviderInterface |
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*/ |
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protected $provider; |
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/** |
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* @var LanguageHelper |
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*/ |
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private static $_instance; |
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/** |
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* Gets the instance via lazy initialization. |
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* |
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* @return LanguageHelper |
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* |
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* @throws \yii\base\InvalidConfigException |
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* @throws \yii\di\NotInstantiableException |
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*/ |
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public static function getInstance() |
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{ |
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if (null === self::$_instance) { |
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self::$_instance = new self(); |
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self::$_instance->provider = Yii::$container->get('motion\i18n\LanguageProviderInterface'); |
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} |
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return self::$_instance; |
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} |
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/** |
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* Returns list of languages. |
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* |
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* @return array |
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*/ |
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public function getAll() |
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{ |
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return $this->provider->getLanguages(); |
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} |
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/** |
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* Returns default application language. |
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* |
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* @return array |
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*/ |
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public function getDefault() |
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{ |
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return $this->provider->getDefaultLanguage(); |
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} |
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/** |
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* Returns language label. |
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* |
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* @param null|string $locale By default uses current application language. |
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* |
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* @return string |
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*/ |
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public function getLabel($locale = null) |
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{ |
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$locale = null === $locale ? Yii::$app->language : $locale; |
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return $this->provider->getLanguageLabel($locale); |
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} |
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/** |
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* Returns language locales. |
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* |
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* @return array |
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*/ |
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public function getLocales() |
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{ |
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return ArrayHelper::getColumn($this->provider->getLanguages(), 'locale'); |
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} |
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/** |
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* Is not allowed to call from outside to prevent from creating multiple instances, |
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* to use the singleton, you have to obtain the instance from getInstance() instead. |
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*/ |
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private function __construct() |
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{ |
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} |
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/** |
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* Prevent the instance from being cloned (which would create a second instance of it). |
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*/ |
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private function __clone() |
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{ |
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} |
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/** |
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* Prevent from being unserialized (which would create a second instance of it). |
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*/ |
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private function __wakeup() |
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{ |
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} |
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} |
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motion-web-production /
yii2-language-provider
