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   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * This file contains a custom renderer class used by the forum module.
  20   *
  21   * @package   mod_forum
  22   * @copyright 2009 Sam Hemelryk
  23   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  /**
  27   * A custom renderer class that extends the plugin_renderer_base and
  28   * is used by the forum module.
  29   *
  30   * @package   mod_forum
  31   * @copyright 2009 Sam Hemelryk
  32   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  33   **/
  34  class mod_forum_renderer extends plugin_renderer_base {
  35  
  36      /**
  37       * Returns the navigation to the previous and next discussion.
  38       *
  39       * @param mixed $prev Previous discussion record, or false.
  40       * @param mixed $next Next discussion record, or false.
  41       * @return string The output.
  42       */
  43      public function neighbouring_discussion_navigation($prev, $next) {
  44          $html = '';
  45          if ($prev || $next) {
  46              $html .= html_writer::start_tag('div', array('class' => 'discussion-nav clearfix'));
  47              $html .= html_writer::start_tag('ul');
  48              if ($prev) {
  49                  $url = new moodle_url('/mod/forum/discuss.php', array('d' => $prev->id));
  50                  $html .= html_writer::start_tag('li', array('class' => 'prev-discussion'));
  51                  $html .= html_writer::link($url, $prev->name,
  52                      array('aria-label' => get_string('prevdiscussiona', 'mod_forum', $prev->name)));
  53                  $html .= html_writer::end_tag('li');
  54              }
  55              if ($next) {
  56                  $url = new moodle_url('/mod/forum/discuss.php', array('d' => $next->id));
  57                  $html .= html_writer::start_tag('li', array('class' => 'next-discussion'));
  58                  $html .= html_writer::link($url, $next->name,
  59                      array('aria-label' => get_string('nextdiscussiona', 'mod_forum', $next->name)));
  60                  $html .= html_writer::end_tag('li');
  61              }
  62              $html .= html_writer::end_tag('ul');
  63              $html .= html_writer::end_tag('div');
  64          }
  65          return $html;
  66      }
  67  
  68      /**
  69       * This method is used to generate HTML for a subscriber selection form that
  70       * uses two user_selector controls
  71       *
  72       * @param user_selector_base $existinguc
  73       * @param user_selector_base $potentialuc
  74       * @return string
  75       */
  76      public function subscriber_selection_form(user_selector_base $existinguc, user_selector_base $potentialuc) {
  77          $output = '';
  78          $formattributes = array();
  79          $formattributes['id'] = 'subscriberform';
  80          $formattributes['action'] = '';
  81          $formattributes['method'] = 'post';
  82          $output .= html_writer::start_tag('form', $formattributes);
  83          $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));
  84  
  85          $existingcell = new html_table_cell();
  86          $existingcell->text = $existinguc->display(true);
  87          $existingcell->attributes['class'] = 'existing';
  88          $actioncell = new html_table_cell();
  89          $actioncell->text  = html_writer::start_tag('div', array());
  90          $actioncell->text .= html_writer::empty_tag('input', array('type'=>'submit', 'name'=>'subscribe', 'value'=>$this->page->theme->larrow.' '.get_string('add'), 'class'=>'actionbutton'));
  91          $actioncell->text .= html_writer::empty_tag('br', array());
  92          $actioncell->text .= html_writer::empty_tag('input', array('type'=>'submit', 'name'=>'unsubscribe', 'value'=>$this->page->theme->rarrow.' '.get_string('remove'), 'class'=>'actionbutton'));
  93          $actioncell->text .= html_writer::end_tag('div', array());
  94          $actioncell->attributes['class'] = 'actions';
  95          $potentialcell = new html_table_cell();
  96          $potentialcell->text = $potentialuc->display(true);
  97          $potentialcell->attributes['class'] = 'potential';
  98  
  99          $table = new html_table();
 100          $table->attributes['class'] = 'subscribertable boxaligncenter';
 101          $table->data = array(new html_table_row(array($existingcell, $actioncell, $potentialcell)));
 102          $output .= html_writer::table($table);
 103  
 104          $output .= html_writer::end_tag('form');
 105          return $output;
 106      }
 107  
 108      /**
 109       * This function generates HTML to display a subscriber overview, primarily used on
 110       * the subscribers page if editing was turned off
 111       *
 112       * @param array $users
 113       * @param object $forum
 114       * @param object $course
 115       * @return string
 116       */
 117      public function subscriber_overview($users, $forum , $course) {
 118          $output = '';
 119          $modinfo = get_fast_modinfo($course);
 120          if (!$users || !is_array($users) || count($users)===0) {
 121              $output .= $this->output->heading(get_string("nosubscribers", "forum"));
 122          } else if (!isset($modinfo->instances['forum'][$forum->id])) {
 123              $output .= $this->output->heading(get_string("invalidmodule", "error"));
 124          } else {
 125              $cm = $modinfo->instances['forum'][$forum->id];
 126              $canviewemail = in_array('email', get_extra_user_fields(context_module::instance($cm->id)));
 127              $output .= $this->output->heading(get_string("subscribersto","forum", "'".format_string($forum->name)."'"));
 128              $table = new html_table();
 129              $table->cellpadding = 5;
 130              $table->cellspacing = 5;
 131              $table->tablealign = 'center';
 132              $table->data = array();
 133              foreach ($users as $user) {
 134                  $info = array($this->output->user_picture($user, array('courseid'=>$course->id)), fullname($user));
 135                  if ($canviewemail) {
 136                      array_push($info, $user->email);
 137                  }
 138                  $table->data[] = $info;
 139              }
 140              $output .= html_writer::table($table);
 141          }
 142          return $output;
 143      }
 144  
 145      /**
 146       * This is used to display a control containing all of the subscribed users so that
 147       * it can be searched
 148       *
 149       * @param user_selector_base $existingusers
 150       * @return string
 151       */
 152      public function subscribed_users(user_selector_base $existingusers) {
 153          $output  = $this->output->box_start('subscriberdiv boxaligncenter');
 154          $output .= html_writer::tag('p', get_string('forcesubscribed', 'forum'));
 155          $output .= $existingusers->display(true);
 156          $output .= $this->output->box_end();
 157          return $output;
 158      }
 159  
 160  
 161  }