root/trackback/files/lib/system/event/listener/ThreadAddFormTrackbackListener.class.php @ 32

<?php
// WCF include
require_once(WCF_DIR.'lib/system/event/EventListener.class.php');

// Utils
require_once(WBB_DIR.'lib/util/TrackbackUtil.class.php');

/**
 * Handles activation of the trackback in threadcreation
 *
 * @author      Torben Brodt
 * @package     de.easy-coding.wbb.trackback
 * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 */
class ThreadAddFormTrackbackListener implements EventListener {
        protected $eventObj;
        protected $className;

        protected $hasTrackback = 0;
        protected $trackbackUrls = "";
        protected $trackbackUrlsOld = "";

        protected $url, $title, $excerpt, $author;

        /**
         * @see EventListener::execute()
         */
        public function execute($eventObj, $className, $eventName) {            
                $this->eventObj = $eventObj;
                $this->className = $className;

                switch ($eventName) {
                        case 'readData':
                                $this->readData();
                                break;
                        case 'readFormParameters':
                                $this->readFormParameters();
                                break;
                        case 'assignVariables':
                                $this->assignVariables();
                                break;
                        case 'saved':
                                $this->saved();
                                break;
                }
        }

        /**
         * @see Form::readData()
         */
        protected function readData () {
                $this->hasTrackback = $this->eventObj->post->hasTrackback;
                $this->trackbackUrls = $this->eventObj->post->trackbackUrls;
                $this->trackbackUrlsOld = $this->eventObj->post->trackbackUrls;
        }

        /**
         * @see Form::readFormParameters()
         */
        protected function readFormParameters () {
                if (isset($_REQUEST['hasTrackback'])) $this->hasTrackback = intval($_REQUEST['hasTrackback']);
                if (isset($_REQUEST['trackbackUrls'])) $this->trackbackUrls = $_REQUEST['trackbackUrls'];
                if (isset($_REQUEST['trackbackUrlsOld'])) $this->trackbackUrlsOld = $_REQUEST['trackbackUrlsOld'];
        }
        
        /**
         * @see Form::assignVariables()
         */
        protected function assignVariables () {
                WBBCore::getTPL()->assign(array(
                                'hasTrackback' => $this->hasTrackback,
                                'trackbackUrls'=> $this->trackbackUrls
                        ));
                WBBCore::getTPL()->append('additionalSettings', WBBCore::getTPL()->fetch('postTrackbackSetting'));
        }

        /**
         * @see Form::saved()
         */
        protected function saved () {
                $postID = 0;
                
                switch ($this->className) {
                        case 'ThreadAddForm':
                                $postID = $this->eventObj->newThread->firstPostID;
                                $this->data = $this->eventObj->newThread->firstPostID;
                                break;
                        case 'PostEditForm':
                                $postID = $this->eventObj->postID;
                                break;
                }
                
                // fetch data from database
                $this->readTrackbackData($postID);
                
                // send new trackbacks to given urls
                $this->discoverNewTrackbacks();

                // UPDATE
                $sql = "UPDATE          wbb".WBB_N."_post
                        SET             hasTrackback    = {$this->hasTrackback},
                                        trackbackUrls   = '".escapeString($this->trackbackUrls)."'
                        WHERE           postID          = {$postID};";

                WBBCore::getDB()->sendQuery($sql);
        }
        
        /**
         * fetch trackback data from database (maybe an event would be faster)
         * @param postID
         */
        private function readTrackbackData($postID) {
                // fetch data
                $row = TrackbackUtil::getPost($postID);

                // assign basic data
                $this->title = $row['topic'];
                $this->excerpt = substr($row['firstPostPreview'],0,255);
                $this->author = $row['username'];
                $this->url = $row['url'];
        }
        
        /**
         * discover and ping new trackbacks
         */
        private function discoverNewTrackbacks() {
                $newlist = explode(' ', $this->trackbackUrls);
                $oldlist = explode(' ', $this->trackbackUrlsOld);
                
                // Trackback
                $trackback = new TrackbackUtil(PAGE_TITLE, $this->author, CHARSET);
                //$tb_array = $trackback->auto_discovery($this->eventObj->post->message);
                
                // Found trackbacks in TEXT. Looping...
                foreach(array_diff($newlist, $oldlist) as $tb_url) {
                        // Attempt to ping each new one...
                        $trackback->ping($tb_url, $this->url, $this->title, $this->excerpt);
                }
        }
}
?>