Proyectos de Subversion Moodle

<?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/>.

/**

 * Defines classes used for plugin info.

 *

 * @package    core

 * @copyright  2011 David Mudrak <david@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

namespace core\plugininfo;

use admin_settingpage;

use core_plugin_manager;

use moodle_url;

use part_of_admin_tree;

/**

 * Class for question types

 */

class qtype extends base {

    public static function plugintype_supports_disabling(): bool {

        return true;

    }

    /**

     * Finds all enabled plugins, the result may include missing plugins.

     * @return array|null of enabled plugins $pluginname=>$pluginname, null means unknown

     */

    public static function get_enabled_plugins() {

        global $DB;

        $plugins = core_plugin_manager::instance()->get_installed_plugins('qtype');

        if (!$plugins) {

            return array();

        }

        $installed = array();

        foreach ($plugins as $plugin => $version) {

            $installed[] = $plugin.'_disabled';

        }

        list($installed, $params) = $DB->get_in_or_equal($installed, SQL_PARAMS_NAMED);

        $disabled = $DB->get_records_select('config_plugins', "name $installed AND plugin = 'question'", $params, 'plugin ASC');

        foreach ($disabled as $conf) {

            if (empty($conf->value)) {

                continue;

            }

            $name = substr($conf->name, 0, -9);

            unset($plugins[$name]);

        }

        $enabled = array();

        foreach ($plugins as $plugin => $version) {

            $enabled[$plugin] = $plugin;

        }

        return $enabled;

    }

    public static function enable_plugin(string $pluginname, int $enabled): bool {

        $haschanged = false;

        $settingname = $pluginname . '_disabled';

        $oldvalue = get_config('question', $settingname);

        $disabled = !$enabled;

        // Only set value if there is no config setting or if the value is different from the previous one.

        if ($oldvalue == false && $disabled) {

            set_config($settingname, $disabled, 'question');

            $haschanged = true;

        } else if ($oldvalue != false && !$disabled) {

            unset_config($settingname, 'question');

            $haschanged = true;

        }

        if ($haschanged) {

            add_to_config_log($settingname, $oldvalue, $disabled, 'question');

            \core_plugin_manager::reset_caches();

        }

        return $haschanged;

    }

    public function is_uninstall_allowed() {

        global $DB;

        if ($this->name === 'missingtype') {

            // qtype_missingtype is used by the system. It cannot be uninstalled.

            return false;

        }

        return !$DB->record_exists('question', array('qtype' => $this->name));

    }

    /**

     * Return URL used for management of plugins of this type.

     * @return moodle_url

     */

    public static function get_manage_url() {

        return new moodle_url('/admin/qtypes.php');

    }

    /**

     * Pre-uninstall hook.

     *

     * This is intended for disabling of plugin, some DB table purging, etc.

     *

     * NOTE: to be called from uninstall_plugin() only.

     * @private

     */

    public function uninstall_cleanup() {

        // Delete any question configuration records mentioning this plugin.

        unset_config($this->name . '_disabled', 'question');

        unset_config($this->name . '_sortorder', 'question');

        parent::uninstall_cleanup();

    }

    public function get_settings_section_name() {

        return 'qtypesetting' . $this->name;

    }

    public function load_settings(part_of_admin_tree $adminroot, $parentnodename, $hassiteconfig) {

        global $CFG, $USER, $DB, $OUTPUT, $PAGE; // In case settings.php wants to refer to them.

        /** @var \admin_root $ADMIN */

        $ADMIN = $adminroot; // May be used in settings.php.

        $plugininfo = $this; // Also can be used inside settings.php.

        $qtype = $this;      // Also can be used inside settings.php.

        if (!$this->is_installed_and_upgraded()) {

            return;

        }

        $section = $this->get_settings_section_name();

        $settings = null;

        $systemcontext = \context_system::instance();

        if (($hassiteconfig || has_capability('moodle/question:config', $systemcontext)) &&

            file_exists($this->full_path('settings.php'))) {

            $settings = new admin_settingpage($section, $this->displayname,

                'moodle/question:config', $this->is_enabled() === false);

            include($this->full_path('settings.php')); // This may also set $settings to null.

        }

        if ($settings) {

            $ADMIN->add($parentnodename, $settings);

        }

    }

}