PublicFileManager::uploadJournalFile PHP Method

    function uploadJournalFile($journalId, $fileName, $destFileName)
    {
        return $this->uploadContextFile(ASSOC_TYPE_JOURNAL, $journalId, $fileName, $destFileName);
    }

 /**
  * Uploads custom stylesheet.
  */
 function uploadStyleSheet()
 {
     $journalId = $this->journalId;
     $plugin =& $this->plugin;
     $settingName = 'externalFeedStyleSheet';
     import('classes.file.PublicFileManager');
     $fileManager = new PublicFileManager();
     if ($fileManager->uploadedFileExists($settingName)) {
         $type = $fileManager->getUploadedFileType($settingName);
         if ($type != 'text/plain' && $type != 'text/css') {
             return false;
         }
         $uploadName = $plugin->getPluginPath() . '/' . $settingName . '.css';
         if ($fileManager->uploadJournalFile($journalId, $settingName, $uploadName)) {
             $value = array('name' => $fileManager->getUploadedFileName($settingName), 'uploadName' => $uploadName, 'dateUploaded' => Core::getCurrentDate());
             $plugin->updateSetting($journalId, $settingName, $value, 'object');
             return true;
         }
     }
     return false;
 }