mirror of
https://github.com/moodle/moodle.git
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541 lines
17 KiB
PHP
541 lines
17 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Utility class for browsing of course files.
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*
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* @package core
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* @subpackage filebrowser
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* @copyright 2008 Petr Skoda (http://skodak.org)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Represents a course context in the tree navigated by @see{file_browser}.
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*
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* @package core
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* @subpackage filebrowser
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* @copyright 2008 Petr Skoda (http://skodak.org)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class file_info_context_course extends file_info {
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protected $course;
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public function __construct($browser, $context, $course) {
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parent::__construct($browser, $context);
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$this->course = $course;
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}
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/**
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* Return information about this specific context level
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*
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* @param $component
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* @param $filearea
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* @param $itemid
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* @param $filepath
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* @param $filename
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*/
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public function get_file_info($component, $filearea, $itemid, $filepath, $filename) {
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global $DB;
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if (!$this->course->visible and !has_capability('moodle/course:viewhiddencourses', $this->context)) {
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return null;
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}
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if (empty($component)) {
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return $this;
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}
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$methodname = "get_area_{$component}_{$filearea}";
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if (method_exists($this, $methodname)) {
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return $this->$methodname($itemid, $filepath, $filename);
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}
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return null;
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}
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protected function get_area_course_summary($itemid, $filepath, $filename) {
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global $CFG;
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if (!has_capability('moodle/course:update', $this->context)) {
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return null;
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}
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if (is_null($itemid)) {
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return $this;
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'course', 'summary', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'course', 'summary', 0);
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} else {
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// not found
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return null;
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}
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}
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, get_string('areacourseintro', 'repository'), false, true, true, false);
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}
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protected function get_area_course_section($itemid, $filepath, $filename) {
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global $CFG, $DB;
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if (!has_capability('moodle/course:update', $this->context)) {
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return null;
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}
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if (empty($itemid)) {
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// list all sections
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return new file_info_area_course_section($this->browser, $this->context, $this->course, $this);
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}
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if (!$section = $DB->get_record('course_sections', array('course'=>$this->course->id, 'id'=>$itemid))) {
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return null; // does not exist
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'course', 'section', $itemid, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'course', 'section', $itemid);
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} else {
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// not found
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return null;
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}
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}
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, $section->section, true, true, true, false);
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}
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protected function get_area_course_legacy($itemid, $filepath, $filename) {
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if (!has_capability('moodle/course:managefiles', $this->context)) {
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return null;
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}
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if ($this->course->id != SITEID and $this->course->legacyfiles != 2) {
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// bad luck, legacy course files not used any more
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}
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if (is_null($itemid)) {
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return $this;
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'course', 'legacy', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'course', 'legacy', 0);
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} else {
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// not found
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return null;
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}
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}
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return new file_info_area_course_legacy($this->browser, $this->context, $storedfile);
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}
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protected function get_area_backup_course($itemid, $filepath, $filename) {
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global $CFG;
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if (!has_capability('moodle/backup:backupcourse', $this->context) and !has_capability('moodle/restore:restorecourse', $this->context)) {
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return null;
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}
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if (is_null($itemid)) {
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return $this;
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'backup', 'course', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'backup', 'course', 0);
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} else {
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// not found
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return null;
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}
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}
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$downloadable = has_capability('moodle/backup:downloadfile', $this->context);
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$uploadable = has_capability('moodle/restore:uploadfile', $this->context);
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, get_string('coursebackup', 'repository'), false, $downloadable, $uploadable, false);
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}
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protected function get_area_backup_section($itemid, $filepath, $filename) {
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global $CFG, $DB;
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if (!has_capability('moodle/backup:backupcourse', $this->context) and !has_capability('moodle/restore:restorecourse', $this->context)) {
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return null;
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}
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if (empty($itemid)) {
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// list all sections
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return new file_info_area_backup_section($this->browser, $this->context, $this->course, $this);
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}
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if (!$section = $DB->get_record('course_sections', array('course'=>$this->course->id, 'id'=>$itemid))) {
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return null; // does not exist
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'backup', 'section', $itemid, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'backup', 'section', $itemid);
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} else {
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// not found
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return null;
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}
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}
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$downloadable = has_capability('moodle/backup:downloadfile', $this->context);
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$uploadable = has_capability('moodle/restore:uploadfile', $this->context);
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, $section->id, true, $downloadable, $uploadable, false);
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}
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public function get_visible_name() {
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return ($this->course->id == SITEID) ? get_string('frontpage', 'admin') : format_string($this->course->fullname);
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}
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/**
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* Can I add new files or directories?
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* @return bool
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*/
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public function is_writable() {
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return false;
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}
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/**
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* Is directory?
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* @return bool
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*/
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public function is_directory() {
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return true;
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}
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/**
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* Returns list of children.
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* @return array of file_info instances
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*/
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public function get_children() {
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$children = array();
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if ($child = $this->get_area_course_summary(0, '/', '.')) {
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$children[] = $child;
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}
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if ($child = $this->get_area_course_section(null, null, null)) {
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$children[] = $child;
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}
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if ($child = $this->get_area_backup_section(null, null, null)) {
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$children[] = $child;
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}
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if ($child = $this->get_area_backup_course(0, '/', '.')) {
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$children[] = $child;
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}
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if ($child = $this->get_area_course_legacy(0, '/', '.')) {
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$children[] = $child;
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}
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// now list all modules
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$modinfo = get_fast_modinfo($this->course);
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foreach ($modinfo->cms as $cminfo) {
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if (empty($cminfo->uservisible)) {
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continue;
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}
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$modcontext = get_context_instance(CONTEXT_MODULE, $cminfo->id);
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if ($child = $this->browser->get_file_info($modcontext)) {
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$children[] = $child;
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}
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}
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return $children;
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}
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/**
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* Returns parent file_info instance
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* @return file_info or null for root
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*/
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public function get_parent() {
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//TODO: error checking if get_parent_contextid() returns false
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$pcid = get_parent_contextid($this->context);
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$parent = get_context_instance_by_id($pcid);
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return $this->browser->get_file_info($parent);
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}
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}
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/**
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* Subclass of file_info_stored for files in the course files area.
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*
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* @package core
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* @subpackage filebrowser
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* @copyright 2008 Petr Skoda (http://skodak.org)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class file_info_area_course_legacy extends file_info_stored {
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public function __construct($browser, $context, $storedfile) {
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global $CFG;
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$urlbase = $CFG->wwwroot.'/file.php';
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parent::__construct($browser, $context, $storedfile, $urlbase, get_string('coursefiles'), false, true, true, false);
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}
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/**
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* Returns file download url
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* @param bool $forcedownload
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* @param bool $htts force https
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* @return string url
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*/
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public function get_url($forcedownload=false, $https=false) {
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global $CFG;
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if (!$this->is_readable()) {
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return null;
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}
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if ($this->lf->is_directory()) {
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return null;
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}
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$filepath = $this->lf->get_filepath();
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$filename = $this->lf->get_filename();
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$courseid = $this->context->instanceid;
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$path = '/'.$courseid.$filepath.$filename;
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return file_encode_url($this->urlbase, $path, $forcedownload, $https);
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}
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/**
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* Returns list of children.
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* @return array of file_info instances
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*/
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public function get_children() {
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if (!$this->lf->is_directory()) {
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return array();
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}
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$result = array();
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$fs = get_file_storage();
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$storedfiles = $fs->get_directory_files($this->context->id, 'course', 'legacy', 0, $this->lf->get_filepath(), false, true, "filepath ASC, filename ASC");
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foreach ($storedfiles as $file) {
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$result[] = new file_info_area_course_legacy($this->browser, $this->context, $file);
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}
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return $result;
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}
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}
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/**
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* Represents a course category context in the tree navigated by @see{file_browser}.
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*
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* @package core
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* @subpackage filebrowser
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* @copyright 2008 Petr Skoda (http://skodak.org)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class file_info_area_course_section extends file_info {
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protected $course;
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protected $courseinfo;
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public function __construct($browser, $context, $course, file_info_context_course $courseinfo) {
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parent::__construct($browser, $context);
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$this->course = $course;
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$this->courseinfo = $courseinfo;
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}
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/**
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* Returns list of standard virtual file/directory identification.
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* The difference from stored_file parameters is that null values
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* are allowed in all fields
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* @return array with keys contextid, filearea, itemid, filepath and filename
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*/
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public function get_params() {
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return array('contextid' => $this->context->id,
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'component' => 'course',
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'filearea' => 'section',
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'itemid' => null,
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'filepath' => null,
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'filename' => null);
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}
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/**
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* Returns localised visible name.
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* @return string
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*/
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public function get_visible_name() {
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$format = $this->course->format;
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$sectionsname = get_string("coursesectionsummaries");
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return $sectionsname;
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}
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/**
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* Can I add new files or directories?
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* @return bool
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*/
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public function is_writable() {
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return false;
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}
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/**
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* Is directory?
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* @return bool
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*/
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public function is_directory() {
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return true;
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}
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/**
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* Returns list of children.
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* @return array of file_info instances
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*/
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public function get_children() {
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global $DB;
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$children = array();
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$course_sections = $DB->get_records('course_sections', array('course'=>$this->course->id), 'section');
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foreach ($course_sections as $section) {
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if ($child = $this->courseinfo->get_file_info('course', 'section', $section->id, '/', '.')) {
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$children[] = $child;
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}
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}
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return $children;
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}
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/**
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* Returns parent file_info instance
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* @return file_info or null for root
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*/
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public function get_parent() {
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return $this->courseinfo;
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}
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}
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/**
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* Implementation of course section backup area
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*
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* @package core
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* @subpackage filebrowser
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* @copyright 2008 Petr Skoda (http://skodak.org)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class file_info_area_backup_section extends file_info {
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protected $course;
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protected $courseinfo;
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public function __construct($browser, $context, $course, file_info_context_course $courseinfo) {
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parent::__construct($browser, $context);
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$this->course = $course;
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$this->courseinfo = $courseinfo;
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}
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/**
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* Returns list of standard virtual file/directory identification.
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* The difference from stored_file parameters is that null values
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* are allowed in all fields
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* @return array with keys contextid, component, filearea, itemid, filepath and filename
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*/
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public function get_params() {
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return array('contextid' => $this->context->id,
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'component' => 'backup',
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'filearea' => 'section',
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'itemid' => null,
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'filepath' => null,
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'filename' => null);
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}
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/**
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* Returns localised visible name.
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* @return string
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*/
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public function get_visible_name() {
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$format = $this->course->format;
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$sectionsname = get_string('sectionbackup', 'repository');
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return $sectionsname;
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}
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/**
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* Can I add new files or directories?
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* @return bool
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*/
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public function is_writable() {
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return false;
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}
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/**
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* Is directory?
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* @return bool
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*/
|
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public function is_directory() {
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return true;
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}
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/**
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* Returns list of children.
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* @return array of file_info instances
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*/
|
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public function get_children() {
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global $DB;
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$children = array();
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$course_sections = $DB->get_records('course_sections', array('course'=>$this->course->id), 'section');
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foreach ($course_sections as $section) {
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if ($child = $this->courseinfo->get_file_info('backup', 'section', $section->id, '/', '.')) {
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$children[] = $child;
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}
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}
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return $children;
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}
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/**
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* Returns parent file_info instance
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* @return file_info or null for root
|
|
*/
|
|
public function get_parent() {
|
|
return $this->browser->get_file_info($this->context);
|
|
}
|
|
}
|
|
|
|
|