source: moodle/trunk/fuentes/lib/classes/plugininfo/qbehaviour.php

Last change on this file was 136, checked in by mabarracus, 4 years ago

Ported code to xenial

File size: 3.6 KB
RevLine 
[136]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 * Defines classes used for plugin info.
19 *
20 * @package    core
21 * @copyright  2011 David Mudrak <david@moodle.com>
22 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 */
24namespace core\plugininfo;
25
26use moodle_url, core_plugin_manager;
27
28defined('MOODLE_INTERNAL') || die();
29
30/**
31 * Class for question behaviours.
32 */
33class qbehaviour extends base {
34    /**
35     * Finds all enabled plugins, the result may include missing plugins.
36     * @return array|null of enabled plugins $pluginname=>$pluginname, null means unknown
37     */
38    public static function get_enabled_plugins() {
39        $plugins = core_plugin_manager::instance()->get_installed_plugins('qbehaviour');
40        if (!$plugins) {
41            return array();
42        }
43        if ($disabled = get_config('question', 'disabledbehaviours')) {
44            $disabled = explode(',', $disabled);
45        } else {
46            $disabled = array();
47        }
48
49        $enabled = array();
50        foreach ($plugins as $plugin => $version) {
51            if (in_array($plugin, $disabled)) {
52                continue;
53            }
54            $enabled[$plugin] = $plugin;
55        }
56
57        return $enabled;
58    }
59
60    public function is_uninstall_allowed() {
61        global $DB;
62
63        if ($this->name === 'missing') {
64            // qbehaviour_missing is used by the system. It cannot be uninstalled.
65            return false;
66        }
67
68        return !$DB->record_exists('question_attempts', array('behaviour' => $this->name));
69    }
70
71    /**
72     * Pre-uninstall hook.
73     *
74     * This is intended for disabling of plugin, some DB table purging, etc.
75     *
76     * NOTE: to be called from uninstall_plugin() only.
77     * @private
78     */
79    public function uninstall_cleanup() {
80        if ($disabledbehaviours = get_config('question', 'disabledbehaviours')) {
81            $disabledbehaviours = explode(',', $disabledbehaviours);
82            $disabledbehaviours = array_unique($disabledbehaviours);
83        } else {
84            $disabledbehaviours = array();
85        }
86        if (($key = array_search($this->name, $disabledbehaviours)) !== false) {
87            unset($disabledbehaviours[$key]);
88            set_config('disabledbehaviours', implode(',', $disabledbehaviours), 'question');
89        }
90
91        if ($behaviourorder = get_config('question', 'behavioursortorder')) {
92            $behaviourorder = explode(',', $behaviourorder);
93            $behaviourorder = array_unique($behaviourorder);
94        } else {
95            $behaviourorder = array();
96        }
97        if (($key = array_search($this->name, $behaviourorder)) !== false) {
98            unset($behaviourorder[$key]);
99            set_config('behavioursortorder', implode(',', $behaviourorder), 'question');
100        }
101
102        parent::uninstall_cleanup();
103    }
104
105    /**
106     * Return URL used for management of plugins of this type.
107     * @return moodle_url
108     */
109    public static function get_manage_url() {
110        return new moodle_url('/admin/qbehaviours.php');
111    }
112}
113
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