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playing with examples - added readbility library for feature process
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| <?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.']'; | ||
| } | ||
| } | ||
| ?> |
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