mod/chat/view.php

   1 <?php  // $Id$
   2
   3 /// This page prints a particular instance of chat
   4
   5     require_once('../../config.php');
   6     require_once('lib.php');
   7     require_once($CFG->libdir.'/blocklib.php');
   8     require_once('pagelib.php');
   9
  10     $id   = optional_param('id', 0, PARAM_INT);
  11     $c    = optional_param('c', 0, PARAM_INT);
  12     $edit = optional_param('edit', -1, PARAM_BOOL);
  13
  14     if ($id) {
  15         if (! $cm = get_coursemodule_from_id('chat', $id)) {
  16             error('Course Module ID was incorrect');
  17         }
  18
  19         if (! $course = get_record('course', 'id', $cm->course)) {
  20             error('Course is misconfigured');
  21         }
  22
  23         chat_update_chat_times($cm->instance);
  24
  25         if (! $chat = get_record('chat', 'id', $cm->instance)) {
  26             error('Course module is incorrect');
  27         }
  28
  29     } else {
  30         chat_update_chat_times($c);
  31
  32         if (! $chat = get_record('chat', 'id', $c)) {
  33             error('Course module is incorrect');
  34         }
  35         if (! $course = get_record('course', 'id', $chat->course)) {
  36             error('Course is misconfigured');
  37         }
  38         if (! $cm = get_coursemodule_from_instance('chat', $chat->id, $course->id)) {
  39             error('Course Module ID was incorrect');
  40         }
  41     }
  42
  43
  44     require_course_login($course, true, $cm);
  45
  46     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
  47
  48     // show some info for guests
  49     if (isguestuser()) {
  50         $navigation = build_navigation('', $cm);
  51         print_header_simple(format_string($chat->name), '', $navigation,
  52                       '', '', true, '', navmenu($course, $cm));
  53         $wwwroot = $CFG->wwwroot.'/login/index.php';
  54         if (!empty($CFG->loginhttps)) {
  55             $wwwroot = str_replace('http:','https:', $wwwroot);
  56         }
  57
  58         notice_yesno(get_string('noguests', 'chat').'<br /><br />'.get_string('liketologin'),
  59                 $wwwroot, $CFG->wwwroot.'/course/view.php?id='.$course->id);
  60
  61         print_footer($course);
  62         exit;
  63
  64     }
  65
  66     add_to_log($course->id, 'chat', 'view', "view.php?id=$cm->id", $chat->id, $cm->id);
  67
  68 // Initialize $PAGE, compute blocks
  69
  70     $PAGE       = page_create_instance($chat->id);
  71     $pageblocks = blocks_setup($PAGE);
  72     $blocks_preferred_width = bounded_number(180, blocks_preferred_width($pageblocks[BLOCK_POS_LEFT]), 210);
  73
  74 /// Print the page header
  75
  76     $strenterchat    = get_string('enterchat', 'chat');
  77     $stridle         = get_string('idle', 'chat');
  78     $strcurrentusers = get_string('currentusers', 'chat');
  79     $strnextsession  = get_string('nextsession', 'chat');
  80
  81     if (($edit != -1) and $PAGE->user_allowed_editing()) {
  82         $USER->editing = $edit;
  83     }
  84
  85     $PAGE->print_header($course->shortname.': %fullname%');
  86
  87     echo '<table id="layout-table"><tr>';
  88
  89     $lt = (empty($THEME->layouttable)) ? array('left', 'middle', 'right') : $THEME->layouttable;
  90     foreach ($lt as $column) {
  91         switch ($column) {
  92             case 'left':
  93
  94                 if(!empty($CFG->showblocksonmodpages) && (blocks_have_content($pageblocks, BLOCK_POS_LEFT) || $PAGE->user_is_editing())) {
  95                     echo '<td style="width: '.$blocks_preferred_width.'px;" id="left-column">';
  96                     print_container_start();
  97                     blocks_print_group($PAGE, $pageblocks, BLOCK_POS_LEFT);
  98                     print_container_end();
  99                     echo '</td>';
 100                 }
 101                 break;
 102
 103             case 'middle':
 104
 105                 echo '<td id="middle-column">';
 106                 print_container_start();
 107
 108                 /// Check to see if groups are being used here
 109                 $groupmode = groups_get_activity_groupmode($cm);
 110                 $currentgroup = groups_get_activity_group($cm, true);
 111                 groups_print_activity_menu($cm, $CFG->wwwroot . "/mod/chat/view.php?id=$cm->id");
 112
 113                 if ($currentgroup) {
 114                     $groupselect = " AND groupid = '$currentgroup'";
 115                     $groupparam = "&amp;groupid=$currentgroup";
 116                 } else {
 117                     $groupselect = "";
 118                     $groupparam = "";
 119                 }
 120
 121                 if ($chat->studentlogs or has_capability('mod/chat:readlog',$context)) {
 122                     if ($msg = get_records_select('chat_messages', "chatid = '$chat->id' $groupselect", '', 'id', '', 1)) {
 123                         echo '<div class="reportlink">';
 124                         echo "<a href=\"report.php?id=$cm->id\">".
 125                             get_string('viewreport', 'chat').'</a>';
 126                         echo '</div>';
 127                     }
 128                 }
 129
 130
 131                 print_heading(format_string($chat->name));
 132
 133                 if (has_capability('mod/chat:chat',$context)) {
 134                     /// Print the main part of the page
 135                     print_box_start('generalbox', 'enterlink');
 136                     // users with screenreader set, will only see 1 link, to the manual refresh page
 137                     // for better accessibility
 138                     if (!empty($USER->screenreader)) {
 139                         $chattarget = "/mod/chat/gui_basic/index.php?id=$chat->id$groupparam";
 140                     } else {
 141                         $chattarget = "/mod/chat/gui_$CFG->chat_method/index.php?id=$chat->id$groupparam";
 142                     }
 143
 144                     echo '<p>';
 145                     link_to_popup_window ($chattarget,
 146                             "chat$course->id$chat->id$groupparam", "$strenterchat", 500, 700, get_string('modulename', 'chat'));
 147                     echo '</p>';
 148
 149                     // if user is using screen reader, then there is no need to display this link again
 150                     if ($CFG->chat_method == 'header_js' && empty($USER->screenreader)) {
 151                         // show frame/js-less alternative
 152                         echo '<p>(';
 153                                 link_to_popup_window ("/mod/chat/gui_basic/index.php?id=$chat->id$groupparam",
 154                                     "chat$course->id$chat->id$groupparam", get_string('noframesjs', 'message'), 500, 700, get_string('modulename', 'chat'));
 155                                 echo ')</p>';
 156                     }
 157
 158                     print_box_end();
 159
 160                 } else {
 161                     print_box_start('generalbox', 'notallowenter');
 162                     echo '<p>'.get_string('notallowenter', 'chat').'</p>';
 163                     print_box_end();
 164                 }
 165
 166                 if ($chat->chattime and $chat->schedule) {  // A chat is scheduled
 167                     echo "<p class=\"nextchatsession\">$strnextsession: ".userdate($chat->chattime).' ('.usertimezone($USER->timezone).')</p>';
 168                 } else {
 169                     echo '<br />';
 170                 }
 171
 172                 if ($chat->intro) {
 173                     print_box(format_text($chat->intro), 'generalbox', 'intro');
 174                 }
 175
 176                 chat_delete_old_users();
 177
 178                 if ($chatusers = chat_get_users($chat->id, $currentgroup, $cm->groupingid)) {
 179                     $timenow = time();
 180                     print_simple_box_start('center');
 181                     print_heading($strcurrentusers);
 182                     echo '<table id="chatcurrentusers">';
 183                     foreach ($chatusers as $chatuser) {
 184                         $lastping = $timenow - $chatuser->lastmessageping;
 185                         echo '<tr><td class="chatuserimage">';
 186                         echo "<a href=\"$CFG->wwwroot/user/view.php?id=$chatuser->id&amp;course=$chat->course\">";
 187                         print_user_picture($chatuser, 0, $chatuser->picture, false, false, false);
 188                         echo '</a></td><td class="chatuserdetails">';
 189                         echo '<p>';
 190                         echo fullname($chatuser).'<br />';
 191                         echo "<span class=\"idletime\">$stridle: ".format_time($lastping)."</span>";
 192                         echo '</p>';
 193                         echo '</td></tr>';
 194                     }
 195                     echo '</table>';
 196                     print_simple_box_end();
 197                 }
 198
 199                 print_container_end();
 200                 echo '</td>';
 201
 202                 break;
 203         }
 204     }
 205
 206     echo '</tr></table>';
 207
 208     print_footer($course);
 209
 210 ?>