. /** * repository_recent class is used to browse recent used files * * @since 2.0 * @package repository * @subpackage recent * @copyright 2010 Dongsheng Cai * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ define('DEFAULT_RECENT_FILES_NUM', 50); class repository_recent extends repository { /** * Initialize recent plugin * @param int $repositoryid * @param int $context * @param array $options */ public function __construct($repositoryid, $context = SYSCONTEXTID, $options = array()) { parent::__construct($repositoryid, $context, $options); $number = get_config('recent', 'recentfilesnumber'); $number = (int)$number; if (empty($number)) { $this->number = DEFAULT_RECENT_FILES_NUM; } else { $this->number = $number; } } /** * recent plugin doesn't require login, so list all files * @return mixed */ public function print_login() { return $this->get_listing(); } private function get_recent_files($limitfrom = 0, $limit = DEFAULT_RECENT_FILES_NUM) { // XXX: get current itemid global $USER, $DB, $itemid; $sql = 'SELECT files1.* FROM {files} files1 JOIN ( SELECT contenthash, filename, MAX(id) AS id FROM {files} WHERE userid = :userid AND filename != :filename AND ((filearea = :filearea1 AND itemid = :itemid) OR filearea != :filearea2) GROUP BY contenthash, filename ) files2 ON files1.id = files2.id ORDER BY files1.timemodified DESC'; $params = array( 'userid' => $USER->id, 'filename' => '.', 'filearea1' => 'draft', 'itemid' => $itemid, 'filearea2' => 'draft'); $rs = $DB->get_recordset_sql($sql, $params, $limitfrom, $limit); $result = array(); foreach ($rs as $file_record) { $info = array(); $info['contextid'] = $file_record->contextid; $info['itemid'] = $file_record->itemid; $info['filearea'] = $file_record->filearea; $info['component'] = $file_record->component; $info['filepath'] = $file_record->filepath; $info['filename'] = $file_record->filename; $result[$file_record->pathnamehash] = $info; } $rs->close(); return $result; } /** * Get file listing * * @param string $encodedpath * @param string $path not used by this plugin * @return mixed */ public function get_listing($encodedpath = '', $page = '') { global $OUTPUT; $ret = array(); $ret['dynload'] = true; $ret['nosearch'] = true; $ret['nologin'] = true; $list = array(); $files = $this->get_recent_files(0, $this->number); try { foreach ($files as $file) { $params = base64_encode(serialize($file)); // Check that file exists and accessible $filesize = $this->get_file_size($params); if (!empty($filesize)) { $node = array( 'title' => $file['filename'], 'size' => $filesize, 'date' => '', 'source'=> $params, 'thumbnail' => $OUTPUT->pix_url(file_extension_icon($file['filename'], 32))->out(false), ); $list[] = $node; } } } catch (Exception $e) { throw new repository_exception('emptyfilelist', 'repository_recent'); } $ret['list'] = array_filter($list, array($this, 'filter')); return $ret; } public static function get_type_option_names() { return array('recentfilesnumber', 'pluginname'); } public function type_config_form($mform) { parent::type_config_form($mform); $number = get_config('repository_recent', 'recentfilesnumber'); if (empty($number)) { $number = DEFAULT_RECENT_FILES_NUM; } $mform->addElement('text', 'recentfilesnumber', get_string('recentfilesnumber', 'repository_recent')); $mform->setDefault('recentfilesnumber', $number); } /** * This plugin doesn't support to link to external links * * @return int */ public function supported_returntypes() { return FILE_INTERNAL; } /** * This function overwrite the default implement to copying file using file_storage * * @global object $USER * @global object $DB * @param string $encoded The information of file, it is base64 encoded php serialized data * @param string $draftitemid itemid * @param string $new_filename The intended name of file * @param string $new_filepath the new path in draft area * @return array The information of file */ public function copy_to_area($encoded, $draftitemid, $new_filepath, $new_filename) { global $USER, $DB; $user_context = get_context_instance(CONTEXT_USER, $USER->id); $fs = get_file_storage(); $params = unserialize(base64_decode($encoded)); $contextid = clean_param($params['contextid'], PARAM_INT); $fileitemid = clean_param($params['itemid'], PARAM_INT); $filename = clean_param($params['filename'], PARAM_FILE); $filepath = clean_param($params['filepath'], PARAM_PATH);; $filearea = clean_param($params['filearea'], PARAM_AREA); $component = clean_param($params['component'], PARAM_COMPONENT); // XXX: // When user try to pick a file from other filearea, normally file api will use file browse to // operate the files with capability check, but in some areas, users don't have permission to // browse the files (for example, forum_attachment area). // // To get 'recent' plugin working, we need to use lower level file_stoarge class to bypass the // capability check, we will use a better workaround to improve it. if ($stored_file = $fs->get_file($contextid, $component, $filearea, $fileitemid, $filepath, $filename)) { // verify user id if ($USER->id != $stored_file->get_userid()) { throw new moodle_exception('errornotyourfile', 'repository'); } $file_record = array('contextid'=>$user_context->id, 'component'=>'user', 'filearea'=>'draft', 'itemid'=>$draftitemid, 'filepath'=>$new_filepath, 'filename'=>$new_filename, 'sortorder'=>0); // test if file already exists if (repository::draftfile_exists($draftitemid, $new_filepath, $new_filename)) { // create new file $unused_filename = repository::get_unused_filename($draftitemid, $new_filepath, $new_filename); $file_record['filename'] = $unused_filename; // create a tmp file $fs->create_file_from_storedfile($file_record, $stored_file); $event = array(); $event['event'] = 'fileexists'; $event['newfile'] = new stdClass; $event['newfile']->filepath = $new_filepath; $event['newfile']->filename = $unused_filename; $event['newfile']->url = moodle_url::make_draftfile_url($draftitemid, $new_filepath, $unused_filename)->out(); $event['existingfile'] = new stdClass; $event['existingfile']->filepath = $new_filepath; $event['existingfile']->filename = $new_filename; $event['existingfile']->url = moodle_url::make_draftfile_url($draftitemid, $new_filepath, $new_filename)->out();; return $event; } else { $fs->create_file_from_storedfile($file_record, $stored_file); $info = array(); $info['title'] = $new_filename; $info['itemid'] = $draftitemid; $info['filesize'] = $stored_file->get_filesize(); $info['url'] = moodle_url::make_draftfile_url($draftitemid, $new_filepath, $new_filename)->out();; $info['contextid'] = $user_context->id; return $info; } } return false; } /** * Does this repository used to browse moodle files? * * @return boolean */ public function has_moodle_files() { return true; } }