lib.php

<?php
// This file is part of the format_wplist plugin for 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/>.

/**
 * Required lib functions
 *
 * @package    format_wplist
 * @copyright  2019 Moodle Pty Ltd <support@moodle.com>
 * @author     2019 <bas@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or late
 */


/**
 * Main class for the WPlist course format
 *
 * @package    format_wplist
 * @copyright  2019 Moodle Pty Ltd <support@moodle.com>
 * @author     2019 <bas@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or late
 */
class format_wplist extends \core_courseformat\base {

    /**
     * Returns true if this course format uses sections
     *
     * @return bool
     */
    public function uses_sections() {
        return true;
    }

    /**
     * Returns the default section name for the topics course format.
     *
     * If the section number is 0, it will use the string with key = section0name from the course format's lang file.
     * If the section number is not 0, the base implementation of format_base::get_default_section_name which uses
     * the string with the key = 'sectionname' from the course format's lang file + the section number will be used.
     *
     * @param stdClass|section_info $section Section object from database or just field course_sections section
     * @return string The default value for the section name.
     */
    public function get_default_section_name($section) {
        if ($section->section == 0) {
            // Return the general section.
            return get_string('section0name', 'format_wplist');
        } else {
            // Use format_base::get_default_section_name implementation which
            // will display the section name in "Topic n" format.
            return parent::get_default_section_name($section);
        }
    }

    /**
     * Returns the display name of the given section that the course prefers.
     *
     * Use section name is specified by user. Otherwise use default ("Topic #")
     *
     * @param int|stdClass|section_info $section Section object from database or just field section.section
     * @return string Display name that the course format prefers, e.g. "Topic 2"
     */
    public function get_section_name($section) {
        $section = $this->get_section($section);
        if ((string)$section->name !== '') {
            return format_string($section->name, true,
                    ['context' => context_course::instance($this->courseid), 'escape' => false]);
        } else {
            return self::get_default_section_name($section);
        }
    }

    /**
     * The URL to use for the specified course (with section)
     *
     * @param int|stdClass $section Section object from database or just field course_sections.section
     *     if omitted the course view page is returned
     * @param array $options options for view URL. At the moment core uses:
     *     'navigation' (bool) if true and section has no separate page, the function returns null
     *     'sr' (int) used by multipage formats to specify to which section to return
     * @return null|moodle_url
     */
    public function get_view_url($section, $options = []) {
        global $CFG;
        $course = $this->get_course();
        $url = new moodle_url('/course/view.php', ['id' => $course->id]);

        if (is_object($section)) {
            $sectionno = $section->section;
        } else {
            $sectionno = $section;
        }
        if ($sectionno !== null) {
            if (empty($CFG->linkcoursesections) && !empty($options['navigation'])) {
                return null;
            }
            $url->set_anchor('section-'.$sectionno);
        }
        return $url;
    }

    /**
     * Returns the information about the ajax support in the given source format
     *
     * The returned object's property (boolean)capable indicates that
     * the course format supports Moodle course ajax features.
     *
     * @return stdClass
     */
    public function supports_ajax() {
        $ajaxsupport = new stdClass();
        $ajaxsupport->capable = true;
        return $ajaxsupport;
    }

    /**
     * Loads all of the course sections into the navigation
     *
     * @param global_navigation $navigation
     * @param navigation_node $node The course node within the navigation
     */
    public function extend_course_navigation($navigation, navigation_node $node) {

    }

    /**
     * Custom action after section has been moved in AJAX mode
     *
     * Used in course/rest.php
     *
     * @return array This will be passed in ajax respose
     */
    public function ajax_section_move() {
        global $PAGE;
        $titles = [];
        $course = $this->get_course();
        $modinfo = get_fast_modinfo($course);
        /** @var format_wplist_renderer $renderer */
        $renderer = $this->get_renderer($PAGE);
        if ($renderer && ($sections = $modinfo->get_section_info_all())) {
            foreach ($sections as $number => $section) {
                $titles[$number] = $renderer->section_title($section, $course);
            }
        }
        return ['sectiontitles' => $titles, 'action' => 'move'];
    }

    /**
     * Returns the wplist of blocks to be automatically added for the newly created course
     *
     * @return array of default blocks, must contain two keys BLOCK_POS_LEFT and BLOCK_POS_RIGHT
     *     each of values is an array of block names (for left and right side columns)
     */
    public function get_default_blocks() {
        return [
            BLOCK_POS_LEFT => [],
            BLOCK_POS_RIGHT => ['search_forums', 'news_items', 'calendar_upcoming', 'recent_activity'],
        ];
    }

    /**
     * Definitions of the additional options that this course format uses for course
     *
     * @param bool $foreditform
     * @return array of options
     */
    public function course_format_options($foreditform = false) {
        static $courseformatoptions = false;
        if ($courseformatoptions === false) {
            $courseconfig = get_config('moodlecourse');
            $courseformatoptions = [
                'hiddensections' => [
                    'default' => $courseconfig->hiddensections,
                    'type' => PARAM_INT,
                ],
                'accordioneffect' => [
                    'default' => 0,
                    'type' => PARAM_INT,
                ],
                'sectionstate' => [
                    'default' => 1,
                    'type' => PARAM_INT,
                ],
            ];
        }
        if ($foreditform && !isset($courseformatoptions['coursedisplay']['label'])) {
            $courseconfig = get_config('moodlecourse');
            $max = $courseconfig->maxsections;
            if (!isset($max) || !is_numeric($max)) {
                $max = 52;
            }
            $sectionmenu = [];
            for ($i = 0; $i <= $max; $i++) {
                $sectionmenu[$i] = "$i";
            }
            $courseformatoptionsedit = [
                'hiddensections' => [
                    'label' => new lang_string('hiddensections'),
                    'help' => 'hiddensections',
                    'help_component' => 'moodle',
                    'element_type' => 'select',
                    'element_attributes' => [
                        [
                            0 => new lang_string('hiddensectionscollapsed'),
                            1 => new lang_string('hiddensectionsinvisible'),
                        ],
                    ],
                ],
                'accordioneffect' => [
                    'label' => new lang_string('accordioneffect', 'format_wplist'),
                    'element_type' => 'select',
                    'element_attributes' => [
                        [
                            0 => new lang_string('no'),
                            1 => new lang_string('yes'),
                        ],
                    ],
                    'help' => 'accordioneffect',
                    'help_component' => 'format_wplist',
                ],
                'sectionstate' => [
                    'label' => new lang_string('sectionstate', 'format_wplist'),
                    'element_type' => 'select',
                    'element_attributes' => [
                        [
                            0 => new lang_string('collapsed', 'format_wplist'),
                            1 => new lang_string('expanded', 'format_wplist'),
                        ],
                    ],
                ],
            ];
            $courseformatoptions = array_merge_recursive($courseformatoptions, $courseformatoptionsedit);
        }
        return $courseformatoptions;
    }

    /**
     * Adds format options elements to the course/section edit form.
     *
     * This function is called from {@see course_edit_form::definition_after_data()}.
     *
     * @param MoodleQuickForm $mform form the elements are added to.
     * @param bool $forsection 'true' if this is a section edit form, 'false' if this is course edit form.
     * @return array array of references to the added form elements.
     */
    public function create_edit_form_elements(&$mform, $forsection = false) {
        global $COURSE;
        $elements = parent::create_edit_form_elements($mform, $forsection);

        if (!$forsection && (empty($COURSE->id) || $COURSE->id == SITEID)) {
            // Add "numsections" element to the create course form - it will force new course to be prepopulated
            // with empty sections.
            // The "Number of sections" option is no longer available when editing course, instead teachers should
            // delete and add sections when needed.
            $courseconfig = get_config('moodlecourse');
            $max = (int)$courseconfig->maxsections;
            $element = $mform->addElement('select', 'numsections', get_string('numberweeks'), range(0, $max ?: 52));
            $mform->setType('numsections', PARAM_INT);
            if (is_null($mform->getElementValue('numsections'))) {
                $mform->setDefault('numsections', $courseconfig->numsections);
            }
            array_unshift($elements, $element);
        }

        return $elements;
    }

    /**
     * Updates format options for a course
     *
     * In case if course format was changed to 'topics', we try to copy options
     * 'numsections' and 'hiddensections' from the previous format.
     * If previous course format did not have 'numsections' option, we populate it with the
     * current number of sections
     *
     * @param stdClass|array $data return value from {@see moodleform::get_data()} or array with data
     * @param stdClass $oldcourse if this function is called from {@see update_course()}
     *     this object contains information about the course before update
     * @return bool whether there were any changes to the options values
     */
    public function update_course_format_options($data, $oldcourse = null) {
        $data = (array)$data;
        if ($oldcourse !== null) {
            $oldcourse = (array)$oldcourse;
            $options = $this->course_format_options();
            foreach ($options as $key => $unused) {
                if (!array_key_exists($key, $data)) {
                    if (array_key_exists($key, $oldcourse)) {
                        $data[$key] = $oldcourse[$key];
                    }
                }
            }
        }
        return $this->update_format_options($data);
    }

    /**
     * Whether this format allows to delete sections
     *
     * Do not call this function directly, instead use {@see course_can_delete_section()}
     *
     * @param int|stdClass|section_info $section
     * @return bool
     */
    public function can_delete_section($section) {
        return true;
    }

    /**
     * Returns whether this course format allows the activity to
     * have "triple visibility state" - visible always, hidden on course page but available, hidden.
     *
     * @param stdClass|cm_info $cm course module (may be null if we are displaying a form for adding a module)
     * @param stdClass|section_info $section section where this module is located or will be added to
     * @return bool
     */
    public function allow_stealth_module_visibility($cm, $section) {
        return !$section->section || $section->visible;
    }
}


/**
 * Get the current user preferences that are available
 *
 * @return mixed Array representing current options along with defaults
 */
function format_wplist_user_preferences() {
    $preferences['/^format_wplist_opensections_(\d)+$/'] = [
        'isregex' => true,
        'type' => PARAM_RAW,
        'null' => NULL_NOT_ALLOWED,
        'default' => '[]',
    ];
    return $preferences;
}

/**
 * Implements callback inplace_editable() allowing to edit values in-place
 *
 * @param string $itemtype
 * @param int $itemid
 * @param mixed $newvalue
 * @return \core\output\inplace_editable
 */
function format_wplist_inplace_editable($itemtype, $itemid, $newvalue) {
    global $DB, $CFG;
    require_once($CFG->dirroot . '/course/lib.php');
    if ($itemtype === 'sectionname' || $itemtype === 'sectionnamenl') {
        $section = $DB->get_record_sql(
            'SELECT s.* FROM {course_sections} s JOIN {course} c ON s.course = c.id WHERE s.id = ? AND c.format = ?',
            [$itemid, 'wplist'], MUST_EXIST);
        return course_get_format($section->course)->inplace_editable_update_section_name($section, $itemtype, $newvalue);
    }
}

/**
 * Get icon mapping for font-awesome.
 */
function format_wplist_get_fontawesome_icon_map() {
    return [
        'format_wplist:plus-circle' => 'fa-plus-circle',
    ];
}