/**
  * Called when displaying a group of posts together on one page.
  * @param forum_discussion $discussion Forum object
  * @param string $html HTML that has already been created for the group
  *   of posts
  * @return string Modified (if necessary) HTML
  */
 public function display_post_group($discussion, $html)
 {
     // Add rating form if there are any rating selects
     $hasratings = strpos($html, '<div class="forumng-editrating">') !== false;
     $hasflags = strpos($html, '<div class="forumng-flag">') !== false;
     if ($hasflags || $hasratings) {
         $script = '<script type="text/javascript">' . 'document.getElementById("forumng-actionform").autocomplete=false;' . '</script>';
         $html = '<form method="post" id="forumng-actionform" ' . 'action="action.php"><div>' . $script . $html . $discussion->get_link_params(forum::PARAM_FORM);
         if ($hasratings) {
             $html .= '<input type="submit" id="forumng-saveallratings" value="' . get_string('saveallratings', 'forumng') . '" name="action.rate"/>';
         }
         $html .= '</div></form>';
     }
     return $html;
 }
 /**
  * Updates the in-memory digest records to add a new post to the given
  * user's digests.
  * @param object $user User object (must include special ->emailtype, etc)
  * @param array $userdigests Array of user id => digest information object
  * @param forum_post $post Post object
  * @param forum_post $inreplyto Parent post
  * @param forum_discussion $discussion Discus
  * @param forum $forum
  * @param object $cm
  * @param object $course
  * @param object $context
  */
 private static function digest_add_post_for_user(&$user, &$userdigests, &$post, &$inreplyto, &$discussion, &$forum, &$cm, &$course, &$context)
 {
     global $CFG;
     // Set up digest for user if required
     if (!array_key_exists($user->id, $userdigests)) {
         $userdigests[$user->id] = new StdClass();
         $userdigests[$user->id]->discussionid = -1;
         // So we do header next
         $userdigests[$user->id]->user = $user;
         $userdigests[$user->id]->forumid = -1;
         // Get header text
         $headerdata = new object();
         $headerdata->sitename = format_string($course->fullname, true);
         $headerdata->userprefs = $CFG->wwwroot . '/user/edit.php?id=' . $user->id . '&amp;course=' . $course->id;
         $userdigests[$user->id]->text = get_string('digestmailheader', 'forumng', $headerdata) . "\n\n";
         // Get header HTML
         $html = "<head>";
         foreach ($CFG->stylesheets as $stylesheet) {
             $html .= '<link rel="stylesheet" type="text/css" href="' . $stylesheet . '" />' . "\n";
         }
         $html .= "</head>\n<body id='forumng-email'>\n";
         $headerdata->userprefs = '<a target="_blank" href="' . $headerdata->userprefs . '">' . get_string('digestmailprefs', 'forumng') . '</a>';
         $html .= '<div class="forumng-emailheader"><p>' . get_string('digestmailheader', 'forumng', $headerdata) . '</p></div><hr size="1" noshade="noshade" />';
         $userdigests[$user->id]->html = $html;
         // Get email subject
         $userdigests[$user->id]->subject = get_string('digestmailsubject', 'forumng', format_string($course->shortname, true));
     }
     // New forum?
     if ($userdigests[$user->id]->forumid != $forum->get_id()) {
         $userdigests[$user->id]->forumid = $forum->get_id();
     }
     // Is this a new discussion?
     if ($userdigests[$user->id]->discussionid != $discussion->get_id()) {
         $strforums = get_string('forums', 'forumng');
         // Per-discussion header (text mode)
         $text = "\n \n";
         $text .= '=====================================================================';
         $text .= "\n \n";
         $text .= "{$course->shortname} -> {$strforums} -> " . format_string($forum->get_name(), true);
         if ($discussion->get_subject(false) !== $forum->get_name()) {
             $text .= " -> " . format_string($discussion->get_subject(false), true);
         }
         $text .= "\n";
         // HTML mode
         $html = '<hr size="1" noshade="noshade" />';
         $html .= "<div class='forumng-breadcrumbs'>" . "<a target='_blank' href='{$CFG->wwwroot}/course/view.php?id={$course->id}'>{$course->shortname}</a> -> " . "<a target='_blank' href='{$CFG->wwwroot}/mod/forumng/index.php?id={$course->id}'>{$strforums}</a> -> " . "<a target='_blank' href='{$CFG->wwwroot}/mod/forumng/view.php?" . $forum->get_link_params(forum::PARAM_HTML) . "'>" . format_string($forum->get_name(), true) . "</a>";
         if ($discussion->get_subject(false) !== $forum->get_name()) {
             $html .= " -> <a target='_blank' href='{$CFG->wwwroot}/mod/forumng/discuss.php?" . $discussion->get_link_params(forum::PARAM_HTML) . "'>" . format_string($discussion->get_subject(false), true) . "</a>";
         }
         $html .= '</div>';
         $userdigests[$user->id]->text .= $text;
         $userdigests[$user->id]->html .= $html;
         $userdigests[$user->id]->discussionid = $discussion->get_id();
     }
     // Get both plaintext and html versions (and subject).
     // The html version will be blank if set to
     // plain text mode.
     $post->build_email($inreplyto, $subject, $text, $html, $user->emailtype & 1, $user->emailtype & 2, $user->emailtype & 4, $user->lang, $user->timezone, true);
     $userdigests[$user->id]->text .= $text;
     $userdigests[$user->id]->html .= $html;
 }