[github/wallabag/wallabag.git] / inc / 3rdparty / JSLikeHTMLElement.php

<?php
/**
* JavaScript-like HTML DOM Element
*
* This class extends PHP's DOMElement to allow
* users to get and set the innerHTML property of
* HTML elements in the same way it's done in 
* JavaScript.
*
* Example usage:
* @code
* require_once 'JSLikeHTMLElement.php';
* header('Content-Type: text/plain');
* $doc = new DOMDocument();
* $doc->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
* $doc->loadHTML('<div><p>Para 1</p><p>Para 2</p></div>');
* $elem = $doc->getElementsByTagName('div')->item(0);
* 
* // print innerHTML
* echo $elem->innerHTML; // prints '<p>Para 1</p><p>Para 2</p>'
* echo "\n\n";
* 
* // set innerHTML
* $elem->innerHTML = '<a href="http://fivefilters.org">FiveFilters.org</a>';
* echo $elem->innerHTML; // prints '<a href="http://fivefilters.org">FiveFilters.org</a>'
* echo "\n\n";
* 
* // print document (with our changes)
* echo $doc->saveXML();
* @endcode
*
* @author Keyvan Minoukadeh - http://www.keyvan.net - keyvan@keyvan.net
* @see http://fivefilters.org (the project this was written for)
*/
class JSLikeHTMLElement extends DOMElement
{
	/**
	* Used for setting innerHTML like it's done in JavaScript:
	* @code
	* $div->innerHTML = '<h2>Chapter 2</h2><p>The story begins...</p>';
	* @endcode
	*/
	public function __set($name, $value) {
		if ($name == 'innerHTML') {
			// first, empty the element
			for ($x=$this->childNodes->length-1; $x>=0; $x--) {
				$this->removeChild($this->childNodes->item($x));
			}
			// $value holds our new inner HTML
			if ($value != '') {
				$f = $this->ownerDocument->createDocumentFragment();
				// appendXML() expects well-formed markup (XHTML)
				$result = @$f->appendXML($value); // @ to suppress PHP warnings
				if ($result) {
					if ($f->hasChildNodes()) $this->appendChild($f);
				} else {
					// $value is probably ill-formed
					$f = new DOMDocument();
					$value = mb_convert_encoding($value, 'HTML-ENTITIES', 'UTF-8');
					// Using <htmlfragment> will generate a warning, but so will bad HTML
					// (and by this point, bad HTML is what we've got).
					// We use it (and suppress the warning) because an HTML fragment will 
					// be wrapped around <html><body> tags which we don't really want to keep.
					// Note: despite the warning, if loadHTML succeeds it will return true.
					$result = @$f->loadHTML('<htmlfragment>'.$value.'</htmlfragment>');
					if ($result) {
						$import = $f->getElementsByTagName('htmlfragment')->item(0);
						foreach ($import->childNodes as $child) {
							$importedNode = $this->ownerDocument->importNode($child, true);
							$this->appendChild($importedNode);
						}
					} else {
						// oh well, we tried, we really did. :(
						// this element is now empty
					}
				}
			}
		} else {
			$trace = debug_backtrace();
			trigger_error('Undefined property via __set(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
		}
	}

	/**
	* Used for getting innerHTML like it's done in JavaScript:
	* @code
	* $string = $div->innerHTML;
	* @endcode
	*/	
	public function __get($name)
	{
		if ($name == 'innerHTML') {
			$inner = '';
			foreach ($this->childNodes as $child) {
				$inner .= $this->ownerDocument->saveXML($child);
			}
			return $inner;
		}

		$trace = debug_backtrace();
		trigger_error('Undefined property via __get(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
		return null;
	}

	public function __toString()
	{
		return '['.$this->tagName.']';
	}
}
Commit	Line	Data
1a268ba7 NL	1	<?php
	2	/**
	3	* JavaScript-like HTML DOM Element
	4	*
	5	* This class extends PHP's DOMElement to allow
	6	* users to get and set the innerHTML property of
3db95a85	7	* HTML elements in the same way it's done in
1a268ba7 NL	8	* JavaScript.
	9	*
	10	* Example usage:
	11	* @code
	12	* require_once 'JSLikeHTMLElement.php';
	13	* header('Content-Type: text/plain');
	14	* $doc = new DOMDocument();
	15	* $doc->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
	16	* $doc->loadHTML('<div><p>Para 1</p><p>Para 2</p></div>');
	17	* $elem = $doc->getElementsByTagName('div')->item(0);
3db95a85	18	*
1a268ba7 NL	19	* // print innerHTML
	20	* echo $elem->innerHTML; // prints '<p>Para 1</p><p>Para 2</p>'
	21	* echo "\n\n";
3db95a85	22	*
1a268ba7 NL	23	* // set innerHTML
	24	* $elem->innerHTML = '<a href="http://fivefilters.org">FiveFilters.org</a>';
	25	* echo $elem->innerHTML; // prints '<a href="http://fivefilters.org">FiveFilters.org</a>'
	26	* echo "\n\n";
3db95a85	27	*
1a268ba7 NL	28	* // print document (with our changes)
	29	* echo $doc->saveXML();
	30	* @endcode
	31	*
	32	* @author Keyvan Minoukadeh - http://www.keyvan.net - keyvan@keyvan.net
	33	* @see http://fivefilters.org (the project this was written for)
	34	*/
	35	class JSLikeHTMLElement extends DOMElement
	36	{
	37	/**
	38	* Used for setting innerHTML like it's done in JavaScript:
	39	* @code
	40	* $div->innerHTML = '<h2>Chapter 2</h2><p>The story begins...</p>';
	41	* @endcode
	42	*/
	43	public function __set($name, $value) {
	44	if ($name == 'innerHTML') {
	45	// first, empty the element
	46	for ($x=$this->childNodes->length-1; $x>=0; $x--) {
	47	$this->removeChild($this->childNodes->item($x));
	48	}
	49	// $value holds our new inner HTML
	50	if ($value != '') {
	51	$f = $this->ownerDocument->createDocumentFragment();
	52	// appendXML() expects well-formed markup (XHTML)
	53	$result = @$f->appendXML($value); // @ to suppress PHP warnings
	54	if ($result) {
	55	if ($f->hasChildNodes()) $this->appendChild($f);
	56	} else {
	57	// $value is probably ill-formed
	58	$f = new DOMDocument();
	59	$value = mb_convert_encoding($value, 'HTML-ENTITIES', 'UTF-8');
	60	// Using <htmlfragment> will generate a warning, but so will bad HTML
	61	// (and by this point, bad HTML is what we've got).
3db95a85	62	// We use it (and suppress the warning) because an HTML fragment will
1a268ba7 NL	63	// be wrapped around <html><body> tags which we don't really want to keep.
	64	// Note: despite the warning, if loadHTML succeeds it will return true.
	65	$result = @$f->loadHTML('<htmlfragment>'.$value.'</htmlfragment>');
	66	if ($result) {
	67	$import = $f->getElementsByTagName('htmlfragment')->item(0);
	68	foreach ($import->childNodes as $child) {
	69	$importedNode = $this->ownerDocument->importNode($child, true);
	70	$this->appendChild($importedNode);
	71	}
	72	} else {
	73	// oh well, we tried, we really did. :(
	74	// this element is now empty
	75	}
	76	}
	77	}
	78	} else {
	79	$trace = debug_backtrace();
	80	trigger_error('Undefined property via __set(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
	81	}
	82	}
	83
	84	/**
	85	* Used for getting innerHTML like it's done in JavaScript:
	86	* @code
	87	* $string = $div->innerHTML;
	88	* @endcode
3db95a85	89	*/
1a268ba7 NL	90	public function __get($name)
	91	{
	92	if ($name == 'innerHTML') {
	93	$inner = '';
	94	foreach ($this->childNodes as $child) {
	95	$inner .= $this->ownerDocument->saveXML($child);
	96	}
	97	return $inner;
	98	}
	99
	100	$trace = debug_backtrace();
	101	trigger_error('Undefined property via __get(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
	102	return null;
	103	}
	104
	105	public function __toString()
	106	{
	107	return '['.$this->tagName.']';
	108	}
baa86173	109	}