/repository/recent/lib.php
PHP | 236 lines | 143 code | 19 blank | 74 comment | 9 complexity | 2c9d7fab7571babc0363d2bc0dab9b7e MD5 | raw file
- <?php
- // This file is part of Moodle - http://moodle.org/
- //
- // Moodle is free software: you can redistribute it and/or modify
- // it under the terms of the GNU General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // Moodle is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public License
- // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
- /**
- * repository_recent class is used to browse recent used files
- *
- * @since 2.0
- * @package repository
- * @subpackage recent
- * @copyright 2010 Dongsheng Cai <dongsheng@moodle.com>
- * @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 $ret;
- }
- public static function get_type_option_names() {
- return array('recentfilesnumber', 'pluginname');
- }
- public static function type_config_form($mform, $classname = 'repository') {
- parent::type_config_form($mform, $classname);
- $number = get_config('repository_recent', 'recentfilesnumber');
- if (empty($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;
- }
- }