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<?php declare(strict_types=1); |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2020 The s9e authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\TextFormatter\Configurator\TemplateNormalizations; |
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use DOMElement; |
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/** |
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* Add a value to a list of space-separated value |
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*/ |
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class AddAttributeValueToElements extends AbstractNormalization |
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{ |
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/** |
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* @var string Name of the attribute to modify |
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*/ |
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protected $attrName; |
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/** |
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* @var string Value to be added to the attribute |
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*/ |
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protected $value; |
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/** |
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* @param string $query XPath query used to locate elements |
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* @param string $attrName Name of the attribute to modify |
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* @param string $value Value to be added to the attribute |
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*/ |
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public function __construct(string $query, string $attrName, string $value) |
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{ |
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$this->attrName = $attrName; |
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$this->queries = [$query]; |
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$this->value = $value; |
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} |
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/** |
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* Explode a string of space-separated values into an array |
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* |
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* @param string $attrValue Attribute's value |
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* @return string[] |
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*/ |
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protected function getValues(string $attrValue): array |
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{ |
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return preg_match_all('(\\S++)', $attrValue, $m) ? $m[0] : []; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function normalizeElement(DOMElement $element): void |
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{ |
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$currentValues = $this->getValues($element->getAttribute($this->attrName)); |
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if (!in_array($this->value, $currentValues, true)) |
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{ |
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$currentValues[] = $this->value; |
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$element->setAttribute($this->attrName, implode(' ', $currentValues)); |
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} |
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} |
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} |