* @package TransPythia * @version $Revision: 1.1 $ * @license http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231.html W3C Software Notice and License * @copyright Copyright (c) 2009, W3C (MIT, ERCIM, Keio) */ /** * Include the {@link TranscodingAction} base class definition. */ require_once(dirname(__FILE__) . '/transcodingaction.php'); /** * Transcoding action that removes embedded elements within the content that * are not allowed in XHTML Basic 1.1 when the requesting device is identified * as mobile: applet, embed and iframe are removed. * * Removed elements are replaced by their alternative content when possible. * * The transcoding action leaves regular object elements untouched. * * @author Sylvain Lequeux * @author Francois Daoust * @package TransPythia * @version $Revision: 1.1 $ * @license http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231.html W3C Software Notice and License * @copyright Copyright (c) 2009, W3C (MIT, ERCIM, Keio) */ class TranscodingActionDeleteEmbeds extends TranscodingAction { /** * Removes embedded elements that are not supported by most mobile devices * when the requesting device is identified as mobile. * * @param string $content The HTML content to transcode. * @param Evidence $evidence The evidence that identifies the requesting device. * @return string The transcoded content. * @exception SystemException The evidence is not valid. */ public function apply($content, $evidence){ $this->initPropertyValues($evidence); $this->initproperty('mobile_device', TranscodingAction::$WURFL_MOBILE_DEVICE, TranscodingAction::$WURFL_VOCABULARY, TranscodingAction::$WURFL_DEFAULT_ASPECT); $property = $this->getOption('mobile_device'); $is_mobile_device = $this->getPropertyValuePr($property); if(!isset($is_mobile_device) || !$is_mobile_device->getBoolean()){ return $content; } // Replace embedded objects by their content when defined. // (note the regular expression would not work if an iframe // was defined within another iframe. Such constructs are forbidden // in HTML/XHTML. $adaptedContent = preg_replace( '/<(applet|embed|iframe)(\s[^>]*)?(?(.*)<\/(applet|embed|iframe)>/Usi', '\3', $content); // Suppress empty embedded objects $adaptedContent = preg_replace( '/<(applet|embed|iframe)(\s[^>]*)?\/?>/Usi', '', $adaptedContent); return $adaptedContent; } } ?>