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<?php
namespace Gt\Dom;
use Gt\PropFunc\MagicProp;
/**
* @property-read ?Element $body The Document.body property represents the <body> or <frameset> node of the current document, or null if no such element exists.
* @property-read ?Element $head Returns the <head> element of the current document.
* @property-read HTMLCollection $embeds Returns a list of the embedded <embed> elements within the current document.
* @property-read HTMLCollection $forms Returns a list of the <form> elements within the current document.
* @property-read HTMLCollection $images Returns a list of the images in the current document.
* @property-read HTMLCollection $links Returns a list of all the hyperlinks in the document.
* @property-read HTMLCollection $scripts Returns all the script elements on the document.
* @property string $title Sets or gets the title of the current document.
*
// * @method getElementsByTagName(string $tagName)
*/
class HTMLDocument extends Document {
use MagicProp;
public function __construct(
string $html = "<!doctype html>",
string $characterSet = "UTF-8"
) {
parent::__construct(
$characterSet,
"text/html",
);
// Workaround for handling UTF-8 encoding correctly.
// @link https://stackoverflow.com/questions/8218230/php-domdocument-loadhtml-not-encoding-utf-8-correctly
$html = '<?xml encoding="'
. strtolower($this->encoding)
. '" ?>'
. $html;
$this->loadHTML($html, LIBXML_SCHEMA_CREATE | LIBXML_COMPACT);
foreach($this->childNodes as $child) {
if($child instanceof ProcessingInstruction) {
$this->removeChild($child);
}
}
/** @var array<Node> $nonElementChildNodes */
$nonElementChildNodes = [];
foreach($this->childNodes as $child) {
if($child instanceof DocumentType
|| $child instanceof Element) {
continue;
}
array_push($nonElementChildNodes, $child);
}
if(is_null($this->documentElement)) {
$this->appendChild($this->createElement("html"));
}
if(is_null($this->head)) {
$this->documentElement->prepend($this->createElement("head"));
}
if(is_null($this->body)) {
$this->documentElement->append($this->createElement("body"));
}
if($nonElementChildNodes) {
call_user_func(
$this->documentElement->prepend(...),
...$nonElementChildNodes,
);
}
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/body */
public function __prop_get_body():null|Element {
return $this->getElementsByTagName("body")->item(0);
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/head */
public function __prop_get_head():null|Element {
return $this->getElementsByTagName("head")->item(0);
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/embeds */
public function __prop_get_embeds():HTMLCollection {
return $this->getElementsByTagName("embed");
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/forms */
public function __prop_get_forms():HTMLCollection {
return $this->getElementsByTagName("form");
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/images */
public function __prop_get_images():HTMLCollection {
return $this->getElementsByTagName("img");
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/links */
public function __prop_get_links():HTMLCollection {
return HTMLCollectionFactory::create(function() {
$elementList = [];
$areaList = $this->getElementsByTagName("area");
for($i = 0, $len = $areaList->length; $i < $len; $i++) {
array_push($elementList, $areaList->item($i));
}
$aList = $this->getElementsByTagName("a");
for($i = 0, $len = $aList->length; $i < $len; $i++) {
$domNode = $aList->item($i);
$hrefAttr = $domNode->attributes->getNamedItem(
"href"
);
if(!$hrefAttr) {
continue;
}
array_push($elementList, $domNode);
}
return NodeListFactory::create(...$elementList);
});
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/scripts */
public function __prop_get_scripts():HTMLCollection {
return $this->getElementsByTagName("script");
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/title */
protected function __prop_get_title():string {
$titleElement = $this->head?->getElementsByTagName("title")?->item(0);
return $titleElement?->text ?? "";
}
/** @link https://developer.mozilla.org/en-US/docs/Web/API/Document/title */
protected function __prop_set_title(string $value):void {
if(!$titleElement = $this->head?->getElementsByTagName("title")?->item(0)) {
$titleElement = $this->createElement("title");
$this->head->appendChild($titleElement);
}
$titleElement->text = $value;
}
}