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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Social activities block.
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 *
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 * @package    block_social_activities
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 * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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class block_social_activities extends block_list {
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    function init(){
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        $this->title = get_string('pluginname', 'block_social_activities');
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    }
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    function applicable_formats() {
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        return array('course-view-social' => true);
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    }
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    function get_content() {
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        global $USER, $CFG, $DB, $OUTPUT;
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        if ($this->content !== NULL) {
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            return $this->content;
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        }
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        $this->content = new stdClass();
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        $this->content->items = array();
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        $this->content->icons = array();
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        $this->content->footer = '';
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        if (empty($this->instance)) {
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            return $this->content;
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        }
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        $course = $this->page->course;
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        $format = course_get_format($course);
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        $courserenderer = $format->get_renderer($this->page);
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        require_once($CFG->dirroot.'/course/lib.php');
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        $context = context_course::instance($course->id);
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        $isediting = $this->page->user_is_editing() && has_capability('moodle/course:manageactivities', $context);
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        $modinfo = get_fast_modinfo($course);
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        // Output classes.
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        $cmnameclass = $format->get_output_classname('content\\cm\\cmname');
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        $controlmenuclass = $format->get_output_classname('content\\cm\\controlmenu');
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        $badgeattributes = [
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            'class' => 'badge rounded-pill bg-warning text-dark mt-2',
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            'data-region' => 'visibility'
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        ];
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        // Extra fast view mode.
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        if (!$isediting) {
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            if (!empty($modinfo->sections[0])) {
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                foreach($modinfo->sections[0] as $cmid) {
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                    $cm = $modinfo->cms[$cmid];
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                    if (!$cm->uservisible || !$cm->is_visible_on_course_page()) {
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                        continue;
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                    }
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                    $badges = '';
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                    if (!$cm->visible) {
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                        $badges = html_writer::tag(
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                            'span',
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                            get_string('hiddenfromstudents'),
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                            $badgeattributes
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                        );
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                    }
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                    if ($cm->is_stealth()) {
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                        $badges = html_writer::tag(
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                            'span',
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                            get_string('hiddenoncoursepage'),
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                            $badgeattributes
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                        );
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                    }
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                    if (!$cm->url) {
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                        $activitybasis = html_writer::div(
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                            $cm->get_formatted_content(['overflowdiv' => true, 'noclean' => true]),
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                            'activity-basis d-flex align-items-center'
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                        );
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                        $content = html_writer::div(
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                            $activitybasis . $badges,
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                            'contentwithoutlink activity-item activity',
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                            ['data-activityname' => $cm->name]
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                        );
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                        $this->content->items[] = $content;
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                        $this->content->icons[] = '';
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                    } else {
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                        $cmname = new $cmnameclass($format, $cm->get_section_info(), $cm);
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                        $activitybasis = html_writer::div(
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                            $courserenderer->render($cmname),
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                            'activity-basis d-flex align-items-center');
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                        $content = html_writer::div(
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                            $activitybasis . $badges,
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                            'activity-item activity',
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                            ['data-activityname' => $cm->name]
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                        );
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                        $this->content->items[] = $content;
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                    }
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                }
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            }
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            return $this->content;
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        }
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        // Slow & hacky editing mode.
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        $ismoving = ismoving($course->id);
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        $section = $modinfo->get_section_info(0);
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        if ($ismoving) {
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            $strmovefull = strip_tags(get_string('movefull', '', "'$USER->activitycopyname'"));
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            $strcancel= get_string('cancel');
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        } else {
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            $strmove = get_string('move');
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        }
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        if ($ismoving) {
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            $this->content->icons[] = '&nbsp;' . $OUTPUT->pix_icon('t/move', get_string('move'));
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            $cancelurl = new moodle_url('/course/mod.php', array('cancelcopy' => 'true', 'sesskey' => sesskey()));
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            $this->content->items[] = $USER->activitycopyname . '&nbsp;(<a href="' . $cancelurl . '">' . $strcancel . '</a>)';
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        }
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        if (!empty($modinfo->sections[0])) {
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            foreach ($modinfo->sections[0] as $modnumber) {
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                $mod = $modinfo->cms[$modnumber];
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                if (!$mod->uservisible || !$mod->is_visible_on_course_page()) {
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                    continue;
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                }
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                if (!$ismoving) {
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                    $controlmenu = new $controlmenuclass(
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                        $format,
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                        $mod->get_section_info(),
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                        $mod,
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                        ['disableindentation' => true]
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                    );
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                    $menu = $controlmenu->get_action_menu($OUTPUT);
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                    // Add a move primary action.
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                    $moveaction = html_writer::link(
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                        new moodle_url('/course/mod.php', ['sesskey' => sesskey(), 'copy' => $mod->id]),
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                        $OUTPUT->pix_icon('i/dragdrop', $strmove),
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                        ['class' => 'editing_move_activity']
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                    );
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                    $editbuttons = html_writer::tag('div',
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                        $courserenderer->render($controlmenu),
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                        ['class' => 'buttons activity-actions ml-auto']
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                    );
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                } else {
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                    $editbuttons = '';
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                    $moveaction = '';
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                }
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                if ($mod->visible || has_capability('moodle/course:viewhiddenactivities', $mod->context)) {
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                    if ($ismoving) {
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                        if ($mod->id == $USER->activitycopy) {
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                            continue;
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                        }
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                        $movingurl = new moodle_url('/course/mod.php', array('moveto' => $mod->id, 'sesskey' => sesskey()));
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                        $this->content->items[] = html_writer::link($movingurl, '', array('title' => $strmovefull,
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                            'class' => 'movehere'));
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                        $this->content->icons[] = '';
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                    }
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                    $badges = '';
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                    if (!$mod->visible) {
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                        $badges = html_writer::tag(
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                            'span',
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                            get_string('hiddenfromstudents'),
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                            $badgeattributes
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                        );
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                    }
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                    if ($mod->is_stealth()) {
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                        $badges = html_writer::tag(
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                            'span',
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                            get_string('hiddenoncoursepage'),
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                            $badgeattributes
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                        );
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                    }
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                    if (!$mod->url) {
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                        $activitybasis = html_writer::div(
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                            $mod->get_formatted_content(['overflowdiv' => true, 'noclean' => true]) .
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                            $editbuttons,
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                            'activity-basis d-flex align-items-center');
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                        $content = html_writer::div(
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                            $moveaction .
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                            $activitybasis .
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                            $badges,
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                            'contentwithoutlink activity-item activity',
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                            ['data-activityname' => $mod->name]
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                        );
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                        $this->content->items[] = $content;
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                        $this->content->icons[] = '';
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                    } else {
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                        $cmname = new $cmnameclass($format, $mod->get_section_info(), $mod);
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                        $activitybasis = html_writer::div(
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                            $courserenderer->render($cmname) .
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                            $editbuttons,
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                            'activity-basis d-flex align-items-center');
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                        $content = html_writer::div(
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                            $moveaction .
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                            $activitybasis .
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                            $badges,
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                            'activity-item activity',
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                            ['data-activityname' => $mod->name]
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                        );
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                        $this->content->items[] = $content;
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                    }
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                }
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            }
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        }
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        if ($ismoving) {
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            $movingurl = new moodle_url('/course/mod.php', array('movetosection' => $section->id, 'sesskey' => sesskey()));
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            $this->content->items[] = html_writer::link($movingurl, '', array('title' => $strmovefull, 'class' => 'movehere'));
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            $this->content->icons[] = '';
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        }
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        $this->content->footer = $courserenderer->course_section_add_cm_control($course,
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                0, null, array('inblock' => true));
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        return $this->content;
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    }
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}