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<?php |
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namespace Sulao\HtmlQuery; |
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use DOMElement; |
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/** |
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* Class HtmlElement |
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* |
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* @package Sulao\HtmlQuery |
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*/ |
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class HtmlElement extends HtmlNode |
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{ |
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/** |
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* @var DOMElement |
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*/ |
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protected $node; |
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/** |
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* HtmlElement constructor. |
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* |
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* @param DOMElement $node |
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*/ |
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public function __construct(DOMElement $node) |
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{ |
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$this->node = $node; |
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} |
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/** |
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* Get the value of an attribute |
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* |
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* @param string $name |
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* |
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* @return string|null |
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*/ |
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public function getAttr(string $name) |
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{ |
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return $this->node->getAttribute($name); |
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} |
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/** |
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* Set attribute. |
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* |
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* @param string $name |
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* @param string $value |
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*/ |
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public function setAttr(string $name, string $value) |
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{ |
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$this->node->setAttribute($name, $value); |
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} |
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/** |
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* Remove an attribute. |
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* |
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* @param string $attributeName |
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*/ |
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public function removeAttr(string $attributeName) |
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{ |
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$this->node->removeAttribute($attributeName); |
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} |
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/** |
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* Remove all attributes except the specified ones. |
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* |
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* @param string|array $except The attribute name(s) that won't be removed |
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*/ |
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public function removeAllAttrs($except = []) |
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{ |
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$names = []; |
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foreach (iterator_to_array($this->node->attributes) as $attribute) { |
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$names[] = $attribute->name; |
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} |
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foreach (array_diff($names, (array) $except) as $name) { |
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$this->node->removeAttribute($name); |
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} |
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} |
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/** |
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* Determine whether the node has the given attribute. |
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* |
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* @param string $attributeName |
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* |
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* @return bool |
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*/ |
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public function hasAttr(string $attributeName) |
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{ |
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return $this->node->hasAttribute($attributeName); |
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} |
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/** |
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* Adds the specified class(es). |
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* |
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* @param string $className |
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*/ |
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public function addClass(string $className) |
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{ |
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if (!$this->hasAttr('class')) { |
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$this->setAttr('class', $className); |
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return; |
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} |
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$classNames = Helper::splitClass($className); |
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$class = (string) $this->getAttr('class'); |
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$classes = Helper::splitClass($class); |
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$classArr = array_diff($classNames, $classes); |
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if (empty($classArr)) { |
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return; |
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} |
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$class .= ' ' . implode(' ', $classArr); |
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$this->setAttr('class', $class); |
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} |
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/** |
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* Determine whether the node is assigned the given class. |
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* |
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* @param string $className |
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* |
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* @return bool |
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*/ |
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public function hasClass(string $className) |
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{ |
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if (!$this->hasAttr('class')) { |
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return false; |
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} |
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$class = (string) $this->getAttr('class'); |
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$classes = Helper::splitClass($class); |
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return in_array($className, $classes); |
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} |
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/** |
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* Remove a single class, multiple classes, or all classes. |
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* |
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* @param string|null $className |
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*/ |
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public function removeClass(?string $className = null) |
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{ |
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if (!$this->hasAttr('class')) { |
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return; |
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} |
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if (is_null($className)) { |
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$this->removeAttr('class'); |
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return; |
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} |
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$classNames = Helper::splitClass($className); |
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$class = (string) $this->getAttr('class'); |
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$classes = Helper::splitClass($class); |
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$classArr = array_diff($classes, $classNames); |
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if (empty($classArr)) { |
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$this->removeAttr('class'); |
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return; |
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} |
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$class = implode(' ', $classArr); |
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$this->setAttr('class', $class); |
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} |
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/** |
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* Add or remove class(es), depending on either the class's presence |
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* or the value of the state argument. |
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* |
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* @param string $className |
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* @param bool|null $state |
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*/ |
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public function toggleClass(string $className, ?bool $state = null) |
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{ |
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if (!is_null($state)) { |
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if ($state) { |
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$this->addClass($className); |
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} else { |
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$this->removeClass($className); |
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} |
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return; |
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} |
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if (!$this->hasAttr('class')) { |
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$this->setAttr('class', $className); |
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return; |
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} |
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$classNames = Helper::splitClass($className); |
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$classes = Helper::splitClass((string) $this->getAttr('class')); |
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$classArr = array_diff($classes, $classNames); |
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$classArr = array_merge( |
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$classArr, |
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array_diff($classNames, $classes) |
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); |
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if (empty($classArr)) { |
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$this->removeClass($className); |
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return; |
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} |
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$this->setAttr('class', implode(' ', $classArr)); |
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} |
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/** |
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* Get the value of a computed style property |
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* |
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* @param string $name |
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* |
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* @return string|null |
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*/ |
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public function getCss(string $name) |
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{ |
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$style = (string) $this->getAttr('style'); |
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$css = Helper::splitCss($style); |
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if (!$css) { |
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return null; |
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} |
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if (array_key_exists($name, $css)) { |
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return $css[$name]; |
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} |
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$arr = array_change_key_case($css, CASE_LOWER); |
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$key = strtolower($name); |
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if (array_key_exists($key, $arr)) { |
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return $arr[$key]; |
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} |
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return null; |
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} |
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/** |
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* Set or Remove one CSS property. |
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* |
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* @param string $name |
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* @param string|null $value |
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*/ |
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public function setCss(string $name, ?string $value) |
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{ |
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if ((string) $value === '') { |
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$this->removeCss($name); |
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return; |
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} |
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$style = (string) $this->getAttr('style'); |
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if (!$style) { |
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$this->setAttr('style', $name . ': ' . $value . ';'); |
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return; |
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} |
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$css = Helper::splitCss($style); |
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if (!array_key_exists($name, $css)) { |
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$allKeys = array_keys($css); |
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$arr = array_combine( |
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$allKeys, |
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array_map('strtolower', $allKeys) |
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) ?: []; |
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$keys = array_keys($arr, strtolower($name)); |
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foreach ($keys as $key) { |
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unset($css[$key]); |
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} |
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} |
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$css[$name] = $value; |
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$style = Helper::implodeCss($css); |
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$this->setAttr('style', $style); |
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} |
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/** |
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* Remove one CSS property. |
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* |
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* @param string $name |
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*/ |
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public function removeCss(string $name) |
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{ |
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$style = (string) $this->getAttr('style'); |
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if (!$style) { |
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return; |
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} |
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$css = Helper::splitCss($style); |
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$removed = false; |
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if (array_key_exists($name, $css)) { |
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unset($css[$name]); |
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$removed = true; |
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} else { |
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$allKeys = array_keys($css); |
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$arr = array_combine( |
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$allKeys, |
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array_map('strtolower', $allKeys) |
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) ?: []; |
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$keys = array_keys($arr, strtolower($name)); |
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foreach ($keys as $key) { |
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unset($css[$key]); |
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$removed = true; |
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} |
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} |
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if ($removed) { |
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$style = Helper::implodeCss($css); |
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$this->setAttr('style', $style); |
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} |
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} |
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} |
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