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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\DomCrawler\Field;
/**
* FormField is the abstract class for all form fields.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
abstract class FormField
{
/**
* @var \DOMElement
*/
protected $node;
/**
* @var string
*/
protected $name;
/**
* @var string
*/
protected $value;
/**
* @var \DOMDocument
*/
protected $document;
/**
* @var \DOMXPath
*/
protected $xpath;
/**
* @var bool
*/
protected $disabled;
/**
* @param \DOMElement $node The node associated with this field
*/
public function __construct(\DOMElement $node)
{
$this->node = $node;
$this->name = $node->getAttribute('name');
$this->xpath = new \DOMXPath($node->ownerDocument);
$this->initialize();
}
/**
* Returns the label tag associated to the field or null if none.
*/
public function getLabel(): ?\DOMElement
{
$xpath = new \DOMXPath($this->node->ownerDocument);
if ($this->node->hasAttribute('id')) {
$labels = $xpath->query(sprintf('descendant::label[@for="%s"]', $this->node->getAttribute('id')));
if ($labels->length > 0) {
return $labels->item(0);
}
}
$labels = $xpath->query('ancestor::label[1]', $this->node);
return $labels->length > 0 ? $labels->item(0) : null;
}
/**
* Returns the name of the field.
*/
public function getName(): string
{
return $this->name;
}
/**
* Gets the value of the field.
*/
public function getValue(): string|array|null
{
return $this->value;
}
/**
* Sets the value of the field.
*/
public function setValue(?string $value)
{
$this->value = $value ?? '';
}
/**
* Returns true if the field should be included in the submitted values.
*/
public function hasValue(): bool
{
return true;
}
/**
* Check if the current field is disabled.
*/
public function isDisabled(): bool
{
return $this->node->hasAttribute('disabled');
}
/**
* Initializes the form field.
*/
abstract protected function initialize();
}