blocks/participants/block_participants.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Participants block
  19  *
  20  * @package    block_participants
  21  * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 class block_participants extends block_list {
  26     function init() {
  27         $this->title = get_string('pluginname', 'block_participants');
  28     }
  29
  30     function get_content() {
  31
  32         global $CFG, $OUTPUT;
  33
  34         if (empty($this->instance)) {
  35             $this->content = '';
  36             return $this->content;
  37         }
  38
  39         $this->content = new stdClass();
  40         $this->content->items = array();
  41         $this->content->icons = array();
  42         $this->content->footer = '';
  43
  44         // user/index.php expect course context, so get one if page has module context.
  45         $currentcontext = $this->page->context->get_course_context(false);
  46
  47         if (empty($currentcontext)) {
  48             $this->content = '';
  49             return $this->content;
  50         } else if ($this->page->course->id == SITEID) {
  51             if (!has_capability('moodle/site:viewparticipants', context_system::instance())) {
  52                 $this->content = '';
  53                 return $this->content;
  54             }
  55         } else {
  56             if (!has_capability('moodle/course:viewparticipants', $currentcontext)) {
  57                 $this->content = '';
  58                 return $this->content;
  59             }
  60         }
  61
  62         $icon = '<img src="'.$OUTPUT->pix_url('i/users') . '" class="icon" alt="" />';
  63         $this->content->items[] = '<a title="'.get_string('listofallpeople').'" href="'.
  64                                   $CFG->wwwroot.'/user/index.php?contextid='.$currentcontext->id.'">'.$icon.get_string('participants').'</a>';
  65
  66         return $this->content;
  67     }
  68
  69     // my moodle can only have SITEID and it's redundant here, so take it away
  70     function applicable_formats() {
  71         return array('all' => true, 'my' => false, 'tag' => false);
  72     }
  73
  74 }