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<?php
namespace andreskrey\Readability;
use League\HTMLToMarkdown\Element;
/**
* Class DOMElement.
*
* This is a extension of the original Element class from League\HTMLToMarkdown\Element.
* This class adds functions specific to Readability.php and overloads some of them to fit the purpose of this project.
*/
class DOMElement extends Element implements DOMElementInterface
{
/**
* @var \DOMNode
*/
protected $node;
/**
* Constructor.
*
* @param \DOMNode $node Selected element from DOMDocument
*/
public function __construct(\DOMNode $node)
{
parent::__construct($node);
}
/**
* Checks for the tag name. Case insensitive.
*
* @param string $value Name to compare to the current tag
*
* @return bool
*/
public function tagNameEqualsTo($value)
{
$tagName = $this->getTagName();
if (strtolower($value) === strtolower($tagName)) {
return true;
}
return false;
}
/**
* Checks if the current node has a single child and if that child is a P node.
* Useful to convert <div><p> nodes to a single <p> node and avoid confusing the scoring system since div with p
* tags are, in practice, paragraphs.
*
* @return bool
*/
public function hasSinglePNode()
{
if ($this->hasChildren()) {
$children = $this->getChildren();
if (count($children) === 1) {
if (strtolower($children[0]->getTagName()) === 'p') {
return true;
}
}
}
return false;
}
/**
* Get the ancestors of the current node.
*
* @param int $maxLevel Max amount of ancestors to get.
*
* @return array
*/
public function getNodeAncestors($maxLevel = 3)
{
$ancestors = [];
$level = 0;
$node = $this;
while ($node && $node->getParent()) {
$ancestors[] = new static($node->node);
$level++;
if ($level >= $maxLevel) {
break;
}
$node = $node->getParent();
}
return $ancestors;
}
/**
* Overloading the getParent function from League\HTMLToMarkdown\Element due to a bug when there are no more parents
* on the selected element.
*
* @return DOMElementInterface|null
*/
public function getParent()
{
$node = $this->node->parentNode;
return ($node) ? new static($node) : null;
}
}
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