settings.php

<?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/>.

/**
 * Version details
 *
 * @package    filter
 * @subpackage completionfilter
 * @copyright  2015 onwards Catalyst IT
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

if ($ADMIN->fulltree) {

    $settings->add(new admin_setting_heading('filter_coursecompletion_firstset',
        get_string('firstset', 'filter_coursecompletion'), ''));
    // Icon for complete courses.
    $name = 'filter_coursecompletion/completeicon';
    $title = new lang_string('completeicon', 'filter_coursecompletion');
    $description = new lang_string('completeicon_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'completeicon');
    $settings->add($setting);

    // Icon for inprogress courses.
    $name = 'filter_coursecompletion/inprogressicon';
    $title = new lang_string('inprogressicon', 'filter_coursecompletion');
    $description = new lang_string('inprogressicon_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'inprogressicon');
    $settings->add($setting);

    // Icon for incomplete courses.
    $name = 'filter_coursecompletion/incompleteicon';
    $title = new lang_string('incompleteicon', 'filter_coursecompletion');
    $description = new lang_string('incompleteicon_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'incompleteicon');
    $settings->add($setting);

    // Icon for complete activities.
    $name = 'filter_coursecompletion/completeacticon';
    $title = new lang_string('completeacticon', 'filter_coursecompletion');
    $description = new lang_string('completeacticon_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'completeacticon');
    $settings->add($setting);

    // Icon for complete - failed activities.
    $name = 'filter_coursecompletion/completefailacticon';
    $title = new lang_string('completefailacticon', 'filter_coursecompletion');
    $description = new lang_string('completefailacticon_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'completefailacticon');
    $settings->add($setting);

    // Icon for incomplete activity.
    $name = 'filter_coursecompletion/incompleteacticon';
    $title = new lang_string('incompleteacticon', 'filter_coursecompletion');
    $description = new lang_string('incompleteacticon_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'incompleteacticon');
    $settings->add($setting);

    /* Second set of icons */

    $settings->add(new admin_setting_heading('filter_coursecompletion_secondset',
    get_string('secondset', 'filter_coursecompletion'), ''));
    // Icon for complete courses.
    $name = 'filter_coursecompletion/completeicon2';
    $title = new lang_string('completeicon2', 'filter_coursecompletion');
    $description = new lang_string('completeicon2_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'completeicon2');
    $settings->add($setting);

    // Icon for inprogress courses.
    $name = 'filter_coursecompletion/inprogressicon2';
    $title = new lang_string('inprogressicon2', 'filter_coursecompletion');
    $description = new lang_string('inprogressicon2_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'inprogressicon2');
    $settings->add($setting);

    // Icon for incomplete courses.
    $name = 'filter_coursecompletion/incompleteicon2';
    $title = new lang_string('incompleteicon2', 'filter_coursecompletion');
    $description = new lang_string('incompleteicon2_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'incompleteicon2');
    $settings->add($setting);

    // Icon for complete activities.
    $name = 'filter_coursecompletion/completeacticon2';
    $title = new lang_string('completeacticon2', 'filter_coursecompletion');
    $description = new lang_string('completeacticon2_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'completeacticon2');
    $settings->add($setting);

    // Icon for complete - failed activities.
    $name = 'filter_coursecompletion/completefailacticon2';
    $title = new lang_string('completefailacticon2', 'filter_coursecompletion');
    $description = new lang_string('completefailacticon2_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'completefailacticon2');
    $settings->add($setting);

    // Icon for incomplete activity.
    $name = 'filter_coursecompletion/incompleteacticon2';
    $title = new lang_string('incompleteacticon2', 'filter_coursecompletion');
    $description = new lang_string('incompleteacticon2_desc', 'filter_coursecompletion');
    $setting = new admin_setting_configstoredfile($name, $title, $description, 'incompleteacticon2');
    $settings->add($setting);

}