renderer.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/>.

/**
 * General renderer
 *
 * @package     mod_sharedresource
 * @author      Valery Fremaux <valery.fremaux@gmail.com>
 * @copyright   Valery Fremaux  (activeprolearn.com)
 * @license     http://www.gnu.org/copyleft/gpl.html GNU Public License
 */

/**
 * Sharedresource renderer
 */
class mod_sharedresource_renderer extends plugin_renderer_base {

    /**
     * Used to go to the library for searching a sharedresource entry for publishing.
     * @param int $section
     * @param string $returnpage
     * @see mod/sharedresource/search.php
     */
    public function add_instance_form($section, $returnpage) {
        global $COURSE;

        if ($COURSE->id == SITEID) {
            $context = context_system::instance();
        } else {
            $context = context_course::instance($COURSE->id);
        }

        $template = new StdClass();

        $params = [
            'course' => $COURSE->id,
            'section' => $section,
            'returnpage' => $returnpage,
            'fromlibrary' => 0,
        ];
        $libraryurl = new moodle_url('/local/sharedresources/index.php', $params);
        $template->searchbutton = $this->output->single_button($libraryurl, get_string('searchinlibrary', 'sharedresource'));
        $template->searchdesc = get_string('addinstance_search_desc', 'sharedresource');

        if (has_capability('repository/sharedresources:create', $context)) {
            $template->cancreate = true;
            $params = [
                'course' => $COURSE->id,
                'section' => $section,
                'returnpage' => $returnpage,
                'fromlibrary' => 0,
                'mode' => 'add',
            ];
            $editurl = new moodle_url('/mod/sharedresource/edit.php', $params);
            $template->createbutton = $this->output->single_button($editurl, get_string('addsharedresource', 'sharedresource'));
            $template->createdesc = get_string('addinstance_create_desc', 'sharedresource');
        }

        return $this->output->render_from_template('mod_sharedresource/addinstance', $template);
    }

    /**
     * Print resource comparison board.
     * @param object $new
     * @param object $old
     * @param string $step
     */
    public function resourcecompare($new, $old, $step = 'postdata') {

        $config = get_config('sharedresource');
        if (!$config->schema) {
            return;
        }
        $plugin = sharedresource_get_plugin($config->schema);

        $template = new StdClass;
        $template->olddescriptionstr = get_string('resourceolddescription', 'sharedresource');
        $template->newdescriptionstr = get_string('resourcenewdescription', 'sharedresource');

        $attributes = [];
        foreach ($old->metadataelements as $elm) {
            $elmkey = $elm->get_element_key();
            $stdelm = $plugin->get_element($elm->get_node_id());
            $attribute = new StdClass;
            $attribute->id = $elmkey;
            $attribute->name = $stdelm->name;
            $attribute->oldvalue = $elm->get_value();
            $attribute->newvalue = '';
            $attributes[$elmkey] = $attribute;
        }

        foreach ($new->metadataelements as $elm) {
            $elmkey = $elm->get_element_key();
            $stdelm = $plugin->get_element($elm->get_node_id());
            if (!array_key_exists($elmkey, $attributes)) {
                $attribute = new StdClass;
                $attribute->id = $elmkey;
                $attribute->name = $stdelm->name;
                $attribute->oldvalue = '';
                $attribute->newvalue = $elm->get_value();
                $attributes[$elmkey] = $attribute;
            } else {
                if ($step == 'predata') {
                    $attributes[$elm->get_element_key()]->newvalue = get_string('predatanotprovided', 'sharedesource');
                } else {
                    $attributes[$elm->get_element_key()]->newvalue = $elm->get_value();
                }
            }
        }

        asort($attributes);

        $template->attributes = array_values($attributes);

        return $this->output->render_from_template('mod_sharedresource/resourcecompare', $template);
    }
}