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87 lines
1.6 KiB
PHP
87 lines
1.6 KiB
PHP
<?php
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namespace Artmark\Forms\Attributes;
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/**
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* Description of LanguageAttribute
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*
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* @author Andrey Pokidov <pokidov@e-traffic.ru>
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*/
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trait LanguageAttribute
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{
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/**
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*
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* @var string
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*/
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private $language = '';
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/**
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* HTML lang attribute of the tag
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* @return string
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*/
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public function language()
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{
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return $this->language;
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}
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/**
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*
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* @return boolean
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*/
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public function hasLanguage()
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{
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return $this->language !== '';
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}
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/**
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*
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* @param string $newLanguage
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* @return $this
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*/
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public function setLanguage($newLanguage)
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{
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self::checkLanguage($newLanguage);
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$this->language = trim($newLanguage);
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return $this;
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}
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/**
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*
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* @return $this
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*/
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public function removeLanguage()
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{
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$this->language = '';
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return $this;
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}
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protected function appendLanguageAttribute(array & $attributes)
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{
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if ($this->hasLanguage())
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{
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$attributes['lang'] = $this->language;
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}
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}
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public static function checkLanguage($language)
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{
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if (!self::isCorrectLanguage($language)) {
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throw new AttributeException('Incorrect language value: `' . strval($language) . '`');
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}
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}
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public static function isCorrectLanguage($language)
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{
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if (!is_string($language)) {
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return false;
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}
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$cleaned = trim($language);
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return $cleaned === '' || preg_match('/^[A-Za-z]{2}([_\-][A-Za-z]{2}){0,1}$/', $cleaned);
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}
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}
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