1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
17/**
18 * Performs course category management ajax actions.
19 *
20 * Please note functions may throw exceptions, please ensure your JS handles them as well as the outcome objects.
21 *
22 * @package    core_course
23 * @copyright  2013 Sam Hemelryk
24 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 */
26
27define('AJAX_SCRIPT', true);
28
29require_once('../../config.php');
30require_once($CFG->dirroot.'/course/lib.php');
31
32$action = required_param('action', PARAM_ALPHA);
33require_sesskey(); // Gotta have the sesskey.
34require_login(); // Gotta be logged in (of course).
35$PAGE->set_context(context_system::instance());
36
37// Prepare an outcome object. We always use this.
38$outcome = new stdClass;
39$outcome->error = false;
40$outcome->outcome = false;
41
42echo $OUTPUT->header();
43
44switch ($action) {
45    case 'movecourseup' :
46        $courseid = required_param('courseid', PARAM_INT);
47        $outcome->outcome = \core_course\management\helper::action_course_change_sortorder_up_one_by_record($courseid);
48        break;
49    case 'movecoursedown' :
50        $courseid = required_param('courseid', PARAM_INT);
51        $outcome->outcome = \core_course\management\helper::action_course_change_sortorder_down_one_by_record($courseid);
52        break;
53    case 'movecourseintocategory':
54        $courseid = required_param('courseid', PARAM_INT);
55        $categoryid = required_param('categoryid', PARAM_INT);
56        $course = get_course($courseid);
57        $oldcategory = core_course_category::get($course->category);
58        $category = core_course_category::get($categoryid);
59        $outcome->outcome = \core_course\management\helper::move_courses_into_category($category, $courseid);
60        $perpage = (int)get_user_preferences('coursecat_management_perpage', $CFG->coursesperpage);
61        $totalcourses = $oldcategory->get_courses_count();
62        $totalpages = ceil($totalcourses / $perpage);
63        if ($totalpages == 0) {
64            $str = get_string('nocoursesyet');
65        } else if ($totalpages == 1) {
66            $str = get_string('showingacourses', 'moodle', $totalcourses);
67        } else {
68            $a = new stdClass;
69            $a->start = ($page * $perpage) + 1;
70            $a->end = min((($page + 1) * $perpage), $totalcourses);
71            $a->total = $totalcourses;
72            $str = get_string('showingxofycourses', 'moodle', $a);
73        }
74        $outcome->totalcatcourses = $category->get_courses_count();
75        $outcome->fromcatcoursecount = $totalcourses;
76        $outcome->paginationtotals = $str;
77        break;
78    case 'movecourseafter' :
79        $courseid = required_param('courseid', PARAM_INT);
80        $moveaftercourseid = required_param('moveafter', PARAM_INT);
81        $outcome->outcome = \core_course\management\helper::action_course_change_sortorder_after_course(
82            $courseid, $moveaftercourseid);
83        break;
84    case 'hidecourse' :
85        $courseid = required_param('courseid', PARAM_INT);
86        $outcome->outcome = \core_course\management\helper::action_course_hide_by_record($courseid);
87        break;
88    case 'showcourse' :
89        $courseid = required_param('courseid', PARAM_INT);
90        $outcome->outcome = \core_course\management\helper::action_course_show_by_record($courseid);
91        break;
92    case 'movecategoryup' :
93        $categoryid = required_param('categoryid', PARAM_INT);
94        $outcome->outcome = \core_course\management\helper::action_category_change_sortorder_up_one_by_id($categoryid);
95        break;
96    case 'movecategorydown' :
97        $categoryid = required_param('categoryid', PARAM_INT);
98        $outcome->outcome = \core_course\management\helper::action_category_change_sortorder_down_one_by_id($categoryid);
99        break;
100    case 'hidecategory' :
101        $categoryid = required_param('categoryid', PARAM_INT);
102        $selectedcategoryid = optional_param('selectedcategory', null, PARAM_INT);
103        $outcome->outcome = \core_course\management\helper::action_category_hide_by_id($categoryid);
104        $outcome->categoryvisibility = \core_course\management\helper::get_category_children_visibility($categoryid);
105        $outcome->coursevisibility = \core_course\management\helper::get_category_courses_visibility($categoryid);
106        if ($selectedcategoryid !== null) {
107            $outcome->coursevisibility = array_merge(
108                $outcome->coursevisibility,
109                \core_course\management\helper::get_category_courses_visibility($selectedcategoryid)
110            );
111        }
112        break;
113    case 'showcategory' :
114        $categoryid = required_param('categoryid', PARAM_INT);
115        $selectedcategoryid = optional_param('selectedcategory', null, PARAM_INT);
116        $outcome->outcome = \core_course\management\helper::action_category_show_by_id($categoryid);
117        $outcome->categoryvisibility = \core_course\management\helper::get_category_children_visibility($categoryid);
118        $outcome->coursevisibility = \core_course\management\helper::get_category_courses_visibility($categoryid);
119        if ($selectedcategoryid !== null) {
120            $outcome->coursevisibility = array_merge(
121                $outcome->coursevisibility,
122                \core_course\management\helper::get_category_courses_visibility($selectedcategoryid)
123            );
124        }
125        break;
126    case 'expandcategory':
127        $categoryid = required_param('categoryid', PARAM_INT);
128        $coursecat = core_course_category::get($categoryid);
129        \core_course\management\helper::record_expanded_category($coursecat);
130        $outcome->outcome = true;
131        break;
132    case 'collapsecategory':
133        $categoryid = required_param('categoryid', PARAM_INT);
134        $coursecat = core_course_category::get($categoryid);
135        \core_course\management\helper::record_expanded_category($coursecat, false);
136        $outcome->outcome = true;
137        break;
138    case 'getsubcategorieshtml' :
139        $categoryid = required_param('categoryid', PARAM_INT);
140        /* @var core_course_management_renderer $renderer */
141        $renderer = $PAGE->get_renderer('core_course', 'management');
142        $outcome->html = html_writer::start_tag('ul',
143            array('class' => 'ml', 'role' => 'group', 'id' => 'subcategoriesof'.$categoryid));
144        $coursecat = core_course_category::get($categoryid);
145        foreach ($coursecat->get_children() as $subcat) {
146            $outcome->html .= $renderer->category_listitem($subcat, array(), $subcat->get_children_count());
147        }
148        $outcome->html .= html_writer::end_tag('ul');
149        $outcome->outcome = true;
150        break;
151}
152
153echo json_encode($outcome);
154echo $OUTPUT->footer();
155// Thats all folks.
156// Don't ever even consider putting anything after this. It just wouldn't make sense.
157// But you already knew that, you smart developer you.
158exit;
159