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<?php |
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/** |
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* FluentDOM\DOM\Element extends PHPs DOMDocument class. It adds some generic namespace handling on |
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* the document level and registers extended Node classes for convenience. |
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* |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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* @copyright Copyright (c) 2009-2017 FluentDOM Contributors |
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*/ |
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namespace FluentDOM\DOM { |
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use FluentDOM\Appendable; |
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use FluentDOM\Utility\Iterators\ElementIterator; |
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use FluentDOM\Utility\QualifiedName; |
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/** |
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* FluentDOM\DOM\Element extends PHPs DOMDocument class. It adds some generic namespace handling on |
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* the document level and registers extended Node classes for convenience. |
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* |
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* @property-read Document $ownerDocument |
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* @property-read Element $nextElementSibling |
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* @property-read Element $previousElementSibling |
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* @property-read Element $firstElementChild |
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* @property-read Element $lastElementChild |
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* @property-read \DOMNode|Node\ChildNode|Node\NonDocumentTypeChildNode|Node $firstChild |
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* @property-read \DOMNode|Node\ChildNode|Node\NonDocumentTypeChildNode|Node $lastChild |
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*/ |
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class Element |
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extends \DOMElement |
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implements |
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\ArrayAccess, |
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\Countable, |
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\IteratorAggregate, |
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Node, |
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Node\ChildNode, |
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Node\NonDocumentTypeChildNode, |
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Node\ParentNode { |
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use |
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Node\ChildNode\Implementation, |
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Node\NonDocumentTypeChildNode\Implementation, |
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Node\QuerySelector\Implementation, |
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Node\StringCast, |
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Node\Xpath, |
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Node\ParentNode\Implementation |
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{ |
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Node\ParentNode\Implementation::append as appendToParentNode; |
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} |
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/** |
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* @param string $name |
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* @return bool |
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*/ |
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public function __isset(string $name) { |
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switch ($name) { |
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case 'nextElementSibling' : |
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return $this->getNextElementSibling() !== NULL; |
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case 'previousElementSibling' : |
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return $this->getPreviousElementSibling() !== NULL; |
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case 'firstElementChild' : |
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return $this->getFirstElementChild() !== NULL; |
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case 'lastElementChild' : |
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return $this->getLastElementChild() !== NULL; |
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} |
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return FALSE; |
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} |
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/** |
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* @param string $name |
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* @return \DOMNode|Element|NULL |
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*/ |
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public function __get(string $name) { |
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switch ($name) { |
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case 'nextElementSibling' : |
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return $this->getNextElementSibling(); |
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case 'previousElementSibling' : |
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return $this->getPreviousElementSibling(); |
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case 'firstElementChild' : |
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return $this->getFirstElementChild(); |
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case 'lastElementChild' : |
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return $this->getLastElementChild(); |
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} |
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return $this->$name; |
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} |
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/** |
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* @param string $name |
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* @param $value |
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* @throws \BadMethodCallException |
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*/ |
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public function __set(string $name, $value) { |
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$this->blockReadOnlyProperties($name); |
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$this->$name = $value; |
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} |
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/** |
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* @param string $name |
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* @throws \BadMethodCallException |
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*/ |
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public function __unset(string $name) { |
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$this->blockReadOnlyProperties($name); |
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unset($this->$name); |
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} |
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/** |
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* @param string $name |
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* @throws \BadMethodCallException |
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*/ |
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private function blockReadOnlyProperties(string $name) { |
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switch ($name) { |
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case 'nextElementSibling' : |
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case 'previousElementSibling' : |
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case 'firstElementChild' : |
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case 'lastElementChild' : |
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throw new \BadMethodCallException( |
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sprintf( |
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'Can not write readonly property %s::$%s.', |
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get_class($this), $name |
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) |
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); |
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} |
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} |
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/** |
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* Validate if an attribute exists |
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* |
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* @param string $name |
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* @return bool |
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* @throws \LogicException |
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*/ |
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public function hasAttribute($name): bool { |
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list($namespaceURI, $localName) = $this->resolveTagName($name); |
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if ($namespaceURI !== '') { |
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return parent::hasAttributeNS($namespaceURI, $localName); |
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} |
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return parent::hasAttribute($name); |
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} |
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/** |
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* Get an attribute value |
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* |
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* @param string $name |
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* @return string|NULL |
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* @throws \LogicException |
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*/ |
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View Code Duplication |
public function getAttribute($name) { |
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list($namespaceURI, $localName) = $this->resolveTagName($name); |
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if ($namespaceURI !== '') { |
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return parent::getAttributeNS($namespaceURI, $localName); |
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} |
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return parent::getAttribute($name); |
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} |
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/** |
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* Get an attribute value |
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* |
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* @param string $name |
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* @return Attribute|\DOMAttr|NULL |
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* @throws \LogicException |
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*/ |
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public function getAttributeNode($name) { |
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list($namespaceURI, $localName) = $this->resolveTagName($name); |
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if ($namespaceURI !== '') { |
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return parent::getAttributeNodeNS($namespaceURI, $localName); |
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} |
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return parent::getAttributeNode($name); |
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} |
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/** |
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* Set an attribute on an element |
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* |
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* @todo validate return value |
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* @param string $name |
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* @param string $value |
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* @return Attribute |
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* @throws \LogicException |
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*/ |
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View Code Duplication |
public function setAttribute($name, $value) { |
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list($namespaceURI) = $this->resolveTagName($name); |
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if ($namespaceURI !== '') { |
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/** @noinspection PhpVoidFunctionResultUsedInspection */ |
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return parent::setAttributeNS($namespaceURI, $name, $value); |
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} |
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return parent::setAttribute($name, $value); |
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} |
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/** |
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* Set an attribute on an element |
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* |
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* @param string $name |
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* @return bool |
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* @throws \LogicException |
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*/ |
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View Code Duplication |
public function removeAttribute($name): bool { |
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list($namespaceURI, $localName) = $this->resolveTagName($name); |
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if ($namespaceURI !== '') { |
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return (bool)parent::removeAttributeNS($namespaceURI, $localName); |
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} |
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return (bool)parent::removeAttribute($name); |
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} |
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/** |
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* Set an attribute on an element |
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* |
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* @param string $name |
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* @param bool $isId |
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* @throws \LogicException |
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*/ |
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View Code Duplication |
public function setIdAttribute($name, $isId) { |
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list($namespaceURI, $localName) = $this->resolveTagName($name); |
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if ($namespaceURI !== '') { |
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parent::setIdAttributeNS($namespaceURI, $localName, $isId); |
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} else { |
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parent::setIdAttribute($name, $isId); |
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} |
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} |
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/** |
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* Append a value to the element node |
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* |
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* The value can be: |
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* |
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* - a node (automatically imported and cloned) |
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* - an object implementing FluentDOM\Appendable (method appendTo()) |
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* - a scalar or object castable to string (adds a text node) |
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* - an array (sets attributes) |
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* |
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* @param \Traversable|\DOMNode|Appendable|array|string|callable $value |
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* @return $this|Element |
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* @throws \LogicException |
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*/ |
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public function append($value): Element { |
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if ($value instanceof \DOMAttr) { |
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$this->setAttributeNode( |
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$value->ownerDocument === $this->ownerDocument |
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? $value : $this->ownerDocument->importNode($value) |
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); |
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} elseif ($value instanceof Appendable) { |
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$this->ownerDocument->namespaces()->store(); |
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$value->appendTo($this); |
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$this->ownerDocument->namespaces()->restore(); |
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} elseif ($value instanceof \Closure && !$value instanceof \DOMNode) { |
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$this->append($value()); |
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} elseif (is_array($value)) { |
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$nodes = []; |
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foreach ($value as $name => $data) { |
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if (QualifiedName::validate($name)) { |
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$this->setAttribute($name, (string)$data); |
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} else { |
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$nodes[] = $data; |
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} |
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} |
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2 |
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$this->appendToParentNode($nodes); |
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} else { |
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$this->appendToParentNode($value); |
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} |
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return $this; |
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} |
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/** |
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* Append an child element |
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* |
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* @param string $name |
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* @param string $content |
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* @param array $attributes |
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* @return Element |
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* @throws \LogicException |
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*/ |
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public function appendElement(string $name, $content = '', array $attributes = NULL): Element { |
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1 |
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$this->appendChild( |
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$node = $this->getDocument()->createElement($name, $content, $attributes) |
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); |
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return $node; |
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} |
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/** |
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* Append an xml fragment to the element node |
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* |
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* @param string $xmlFragment |
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* @throws \InvalidArgumentException |
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*/ |
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public function appendXml(string $xmlFragment) { |
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$fragment = $this->getDocument()->createDocumentFragment(); |
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$fragment->appendXml($xmlFragment); |
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$this->appendChild($fragment); |
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} |
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/** |
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* save the element node as XML |
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* |
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* @return string |
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*/ |
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1 |
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public function saveXml(): string { |
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return $this->getDocument()->saveXML($this); |
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} |
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/** |
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* Save the child nodes of this element as an XML fragment. |
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* |
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* @return string |
301
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*/ |
302
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1 |
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public function saveXmlFragment(): string { |
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1 |
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$result = ''; |
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1 |
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foreach ($this->childNodes as $child) { |
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1 |
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$result .= $this->getDocument()->saveXML($child); |
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} |
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return $result; |
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} |
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310
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/** |
311
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* save the element node as HTML |
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* |
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* @return string |
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*/ |
315
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2 |
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public function saveHtml(): string { |
316
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2 |
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return $this->getDocument()->saveHTML($this); |
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} |
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/** |
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* Allow getElementsByTagName to use the defined namespaces. |
321
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* |
322
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* @param string $name |
323
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* @return \DOMNodeList |
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* @throws \LogicException |
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*/ |
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2 |
View Code Duplication |
public function getElementsByTagName($name): \DOMNodeList { |
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2 |
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list($namespaceURI, $localName) = $this->resolveTagName($name); |
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2 |
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if ($namespaceURI !== '') { |
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1 |
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return parent::getElementsByTagNameNS($namespaceURI, $localName); |
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} |
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1 |
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return parent::getElementsByTagName($localName); |
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} |
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/*************************** |
335
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* Array Access Interface |
336
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***************************/ |
337
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338
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/** |
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* Validate if an offset exists. If a integer is provided |
340
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* it will check for a child node, if a string is provided for an attribute. |
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* |
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* @param int|string $offset |
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* @return bool |
344
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* @throws \InvalidArgumentException |
345
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*/ |
346
|
5 |
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public function offsetExists($offset): bool { |
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5 |
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if ($this->isNodeOffset($offset)) { |
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3 |
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return $this->count() > $offset; |
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} |
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2 |
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return $this->hasAttribute($offset); |
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} |
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/** |
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* Get a child node by its numeric index, or an attribute by its name. |
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* |
356
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* @param int|string $offset |
357
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* @return \DOMNode|mixed|string |
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* @throws \InvalidArgumentException |
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*/ |
360
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4 |
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public function offsetGet($offset) { |
361
|
4 |
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if ($this->isNodeOffset($offset)) { |
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2 |
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return $this->childNodes->item((int)$offset); |
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} |
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return $this->getAttribute($offset); |
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} |
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/** |
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* @param int|string $offset |
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* @param \DOMNode|string $value |
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* @throws \LogicException |
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*/ |
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|
4 |
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public function offsetSet($offset, $value) { |
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|
4 |
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if (NULL === $offset || $this->isNodeOffset($offset)) { |
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|
3 |
|
if (!($value instanceOf \DOMNode)) { |
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1 |
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throw new \InvalidArgumentException( |
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|
1 |
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'$value is not a valid \\DOMNode' |
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); |
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} |
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2 |
|
if (NULL === $offset) { |
380
|
1 |
|
$this->appendChild($value); |
381
|
|
|
} else { |
382
|
1 |
|
$this->replaceChild( |
383
|
1 |
|
$value, $this->childNodes->item((int)$offset) |
384
|
|
|
); |
385
|
|
|
} |
386
|
|
|
} else { |
387
|
1 |
|
$this->setAttribute($offset, (string)$value); |
388
|
|
|
} |
389
|
3 |
|
} |
390
|
|
|
|
391
|
|
|
/** |
392
|
|
|
* Remove a child node using its index or an attribute node using its name. |
393
|
|
|
* |
394
|
|
|
* @param int|string $offset |
395
|
|
|
* @throws \InvalidArgumentException |
396
|
|
|
*/ |
397
|
2 |
|
public function offsetUnset($offset) { |
398
|
2 |
|
if ($this->isNodeOffset($offset)) { |
399
|
1 |
|
$this->removeChild($this->childNodes->item((int)$offset)); |
400
|
|
|
} else { |
401
|
1 |
|
$this->removeAttribute($offset); |
402
|
|
|
} |
403
|
2 |
|
} |
404
|
|
|
|
405
|
|
|
/** |
406
|
|
|
* Node offsets are integers, or strings containing only digits. |
407
|
|
|
* |
408
|
|
|
* @param mixed $offset |
409
|
|
|
* @throws \InvalidArgumentException |
410
|
|
|
* @return bool |
411
|
|
|
*/ |
412
|
14 |
|
private function isNodeOffset($offset): bool { |
413
|
14 |
|
if (is_int($offset) || ctype_digit((string)$offset)) { |
414
|
8 |
|
return TRUE; |
415
|
|
|
} |
416
|
7 |
|
if ($this->isAttributeOffset($offset)) { |
417
|
6 |
|
return FALSE; |
418
|
|
|
} |
419
|
1 |
|
throw new \InvalidArgumentException( |
420
|
1 |
|
'Invalid offset. Use integer for child nodes and strings for attributes.' |
421
|
|
|
); |
422
|
|
|
} |
423
|
|
|
|
424
|
|
|
/** |
425
|
|
|
* Attribute offsets are strings that can not only contains digits. |
426
|
|
|
* |
427
|
|
|
* @param mixed $offset |
428
|
|
|
* @return bool |
429
|
|
|
*/ |
430
|
7 |
|
private function isAttributeOffset($offset): bool { |
431
|
7 |
|
return (is_string($offset) && !ctype_digit((string)$offset)); |
432
|
|
|
} |
433
|
|
|
|
434
|
|
|
/************************* |
435
|
|
|
* Iterator |
436
|
|
|
************************/ |
437
|
|
|
|
438
|
|
|
/** |
439
|
|
|
* Return Iterator for child nodes. |
440
|
|
|
* |
441
|
|
|
* @return \Iterator |
442
|
|
|
*/ |
443
|
1 |
|
public function getIterator(): \Iterator { |
444
|
1 |
|
return new ElementIterator($this); |
445
|
|
|
} |
446
|
|
|
|
447
|
|
|
/************************* |
448
|
|
|
* Countable |
449
|
|
|
************************/ |
450
|
|
|
|
451
|
|
|
/** |
452
|
|
|
* Return child node count |
453
|
|
|
* |
454
|
|
|
* @return int |
455
|
|
|
*/ |
456
|
4 |
|
public function count(): int { |
457
|
4 |
|
$nodes = $this->childNodes; |
458
|
4 |
|
return ($nodes instanceOf \DOMNodeList) ? $nodes->length : 0; |
459
|
|
|
} |
460
|
|
|
|
461
|
|
|
/** |
462
|
|
|
* Resolves a provided tag name into namespace and local name |
463
|
|
|
* |
464
|
|
|
* @param string $name |
465
|
|
|
* @return string[] |
466
|
|
|
* @throws \LogicException |
467
|
|
|
*/ |
468
|
13 |
|
private function resolveTagName(string $name): array { |
469
|
13 |
|
list($prefix, $localName) = QualifiedName::split($name); |
470
|
13 |
|
if (empty($prefix)) { |
471
|
10 |
|
return ['', (string)$localName]; |
472
|
|
|
} |
473
|
3 |
|
$namespaceURI = $this->getDocument()->namespaces()->resolveNamespace($prefix); |
474
|
3 |
|
return [(string)$namespaceURI, (string)$localName]; |
475
|
|
|
} |
476
|
|
|
|
477
|
|
|
/** |
478
|
|
|
* A getter for the owner document |
479
|
|
|
* |
480
|
|
|
* @return Document |
481
|
|
|
*/ |
482
|
6 |
|
private function getDocument(): Document { |
483
|
6 |
|
return $this->ownerDocument; |
484
|
|
|
} |
485
|
|
|
|
486
|
|
|
/** |
487
|
|
|
* Sets all namespaces registered on the document as xmlns attributes on the element. |
488
|
|
|
* |
489
|
|
|
* @param NULL|string|array $prefixes |
490
|
|
|
* @throws \LogicException |
491
|
|
|
*/ |
492
|
4 |
|
public function applyNamespaces($prefixes = NULL) { |
493
|
4 |
|
if ($prefixes !== NULL && !is_array($prefixes)) { |
494
|
1 |
|
$prefixes = [$prefixes]; |
495
|
|
|
} |
496
|
4 |
|
foreach ($this->getDocument()->namespaces() as $prefix => $namespaceURI) { |
497
|
|
|
if ( |
498
|
4 |
|
!$this->isCurrentNamespace($prefix, $namespaceURI) && |
499
|
4 |
|
($prefixes === NULL || in_array($prefix, $prefixes, TRUE)) |
500
|
|
|
) { |
501
|
4 |
|
$this->setAttribute( |
502
|
4 |
|
($prefix === '#default') ? 'xmlns' : 'xmlns:'.$prefix, |
503
|
4 |
|
$namespaceURI |
504
|
|
|
); |
505
|
|
|
} |
506
|
|
|
} |
507
|
4 |
|
} |
508
|
|
|
|
509
|
|
|
/** |
510
|
|
|
* Return TRUE if the provided namespace is the same as the one on the element |
511
|
|
|
* |
512
|
|
|
* @param string $prefix |
513
|
|
|
* @param string $namespaceURI |
514
|
|
|
* @return bool |
515
|
|
|
*/ |
516
|
4 |
|
private function isCurrentNamespace(string $prefix, string $namespaceURI): bool { |
517
|
|
|
return ( |
518
|
4 |
|
$namespaceURI === $this->namespaceURI && |
519
|
4 |
|
$prefix === ($this->prefix ?: '#default') |
520
|
|
|
); |
521
|
|
|
} |
522
|
|
|
} |
523
|
|
|
} |