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Moodle
2.2.1
http://www.collinsharper.com
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Moodle
2.2.1
http://www.collinsharper.com
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00001 <?php 00002 00003 // This file is part of Moodle - http://moodle.org/ 00004 // 00005 // Moodle is free software: you can redistribute it and/or modify 00006 // it under the terms of the GNU General Public License as published by 00007 // the Free Software Foundation, either version 3 of the License, or 00008 // (at your option) any later version. 00009 // 00010 // Moodle is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 // GNU General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 00017 00026 require_once($CFG->dirroot.'/calendar/lib.php'); 00027 00028 // The HTML head for the message window to start with (<!-- nix --> is used to get some browsers starting with output 00029 global $CHAT_HTMLHEAD; 00030 $CHAT_HTMLHEAD = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\"><html><head></head>\n<body>\n\n".padding(200); 00031 00032 // The HTML head for the message window to start with (with js scrolling) 00033 global $CHAT_HTMLHEAD_JS; 00034 $CHAT_HTMLHEAD_JS = <<<EOD 00035 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> 00036 <html><head><script type="text/javascript"> 00037 //<![CDATA[ 00038 function move(){ 00039 if (scroll_active) 00040 window.scroll(1,400000); 00041 window.setTimeout("move()",100); 00042 } 00043 var scroll_active = true; 00044 move(); 00045 //]]> 00046 </script> 00047 </head> 00048 <body onBlur="scroll_active = true" onFocus="scroll_active = false"> 00049 EOD; 00050 global $CHAT_HTMLHEAD_JS; 00051 $CHAT_HTMLHEAD_JS .= padding(200); 00052 00053 // The HTML code for standard empty pages (e.g. if a user was kicked out) 00054 global $CHAT_HTMLHEAD_OUT; 00055 $CHAT_HTMLHEAD_OUT = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\"><html><head><title>You are out!</title></head><body></body></html>"; 00056 00057 // The HTML head for the message input page 00058 global $CHAT_HTMLHEAD_MSGINPUT; 00059 $CHAT_HTMLHEAD_MSGINPUT = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\"><html><head><title>Message Input</title></head><body>"; 00060 00061 // The HTML code for the message input page, with JavaScript 00062 global $CHAT_HTMLHEAD_MSGINPUT_JS; 00063 $CHAT_HTMLHEAD_MSGINPUT_JS = <<<EOD 00064 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> 00065 <html> 00066 <head><title>Message Input</title> 00067 <script type="text/javascript"> 00068 //<![CDATA[ 00069 scroll_active = true; 00070 function empty_field_and_submit(){ 00071 document.fdummy.arsc_message.value=document.f.arsc_message.value; 00072 document.fdummy.submit(); 00073 document.f.arsc_message.focus(); 00074 document.f.arsc_message.select(); 00075 return false; 00076 } 00077 //]]> 00078 </script> 00079 </head><body OnLoad="document.f.arsc_message.focus();document.f.arsc_message.select();">; 00080 EOD; 00081 00082 // Dummy data that gets output to the browser as needed, in order to make it show output 00083 global $CHAT_DUMMY_DATA; 00084 $CHAT_DUMMY_DATA = padding(200); 00085 00090 function padding($n){ 00091 $str = ''; 00092 for($i=0; $i<$n; $i++){ 00093 $str.="<!-- nix -->\n"; 00094 } 00095 return $str; 00096 } 00097 00108 function chat_add_instance($chat) { 00109 global $DB; 00110 00111 $chat->timemodified = time(); 00112 00113 $returnid = $DB->insert_record("chat", $chat); 00114 00115 $event = new stdClass(); 00116 $event->name = $chat->name; 00117 $event->description = format_module_intro('chat', $chat, $chat->coursemodule); 00118 $event->courseid = $chat->course; 00119 $event->groupid = 0; 00120 $event->userid = 0; 00121 $event->modulename = 'chat'; 00122 $event->instance = $returnid; 00123 $event->eventtype = 'chattime'; 00124 $event->timestart = $chat->chattime; 00125 $event->timeduration = 0; 00126 00127 calendar_event::create($event); 00128 00129 return $returnid; 00130 } 00131 00141 function chat_update_instance($chat) { 00142 global $DB; 00143 00144 $chat->timemodified = time(); 00145 $chat->id = $chat->instance; 00146 00147 00148 $DB->update_record("chat", $chat); 00149 00150 $event = new stdClass(); 00151 00152 if ($event->id = $DB->get_field('event', 'id', array('modulename'=>'chat', 'instance'=>$chat->id))) { 00153 00154 $event->name = $chat->name; 00155 $event->description = format_module_intro('chat', $chat, $chat->coursemodule); 00156 $event->timestart = $chat->chattime; 00157 00158 $calendarevent = calendar_event::load($event->id); 00159 $calendarevent->update($event); 00160 } 00161 00162 return true; 00163 } 00164 00174 function chat_delete_instance($id) { 00175 global $DB; 00176 00177 00178 if (! $chat = $DB->get_record('chat', array('id'=>$id))) { 00179 return false; 00180 } 00181 00182 $result = true; 00183 00184 // Delete any dependent records here 00185 00186 if (! $DB->delete_records('chat', array('id'=>$chat->id))) { 00187 $result = false; 00188 } 00189 if (! $DB->delete_records('chat_messages', array('chatid'=>$chat->id))) { 00190 $result = false; 00191 } 00192 if (! $DB->delete_records('chat_messages_current', array('chatid'=>$chat->id))) { 00193 $result = false; 00194 } 00195 if (! $DB->delete_records('chat_users', array('chatid'=>$chat->id))) { 00196 $result = false; 00197 } 00198 00199 if (! $DB->delete_records('event', array('modulename'=>'chat', 'instance'=>$chat->id))) { 00200 $result = false; 00201 } 00202 00203 return $result; 00204 } 00205 00221 function chat_user_outline($course, $user, $mod, $chat) { 00222 return NULL; 00223 } 00224 00235 function chat_user_complete($course, $user, $mod, $chat) { 00236 return true; 00237 } 00238 00251 function chat_print_recent_activity($course, $viewfullnames, $timestart) { 00252 global $CFG, $USER, $DB, $OUTPUT; 00253 00254 // this is approximate only, but it is really fast ;-) 00255 $timeout = $CFG->chat_old_ping * 10; 00256 00257 if (!$mcms = $DB->get_records_sql("SELECT cm.id, MAX(chm.timestamp) AS lasttime 00258 FROM {course_modules} cm 00259 JOIN {modules} md ON md.id = cm.module 00260 JOIN {chat} ch ON ch.id = cm.instance 00261 JOIN {chat_messages} chm ON chm.chatid = ch.id 00262 WHERE chm.timestamp > ? AND ch.course = ? AND md.name = 'chat' 00263 GROUP BY cm.id 00264 ORDER BY lasttime ASC", array($timestart, $course->id))) { 00265 return false; 00266 } 00267 00268 $past = array(); 00269 $current = array(); 00270 $modinfo =& get_fast_modinfo($course); // reference needed because we might load the groups 00271 00272 foreach ($mcms as $cmid=>$mcm) { 00273 if (!array_key_exists($cmid, $modinfo->cms)) { 00274 continue; 00275 } 00276 $cm = $modinfo->cms[$cmid]; 00277 $cm->lasttime = $mcm->lasttime; 00278 if (!$modinfo->cms[$cm->id]->uservisible) { 00279 continue; 00280 } 00281 00282 if (groups_get_activity_groupmode($cm) != SEPARATEGROUPS 00283 or has_capability('moodle/site:accessallgroups', get_context_instance(CONTEXT_MODULE, $cm->id))) { 00284 if ($timeout > time() - $cm->lasttime) { 00285 $current[] = $cm; 00286 } else { 00287 $past[] = $cm; 00288 } 00289 00290 continue; 00291 } 00292 00293 if (is_null($modinfo->groups)) { 00294 $modinfo->groups = groups_get_user_groups($course->id); // load all my groups and cache it in modinfo 00295 } 00296 00297 // verify groups in separate mode 00298 if (!$mygroupids = $modinfo->groups[$cm->groupingid]) { 00299 continue; 00300 } 00301 00302 // ok, last post was not for my group - we have to query db to get last message from one of my groups 00303 // only minor problem is that the order will not be correct 00304 $mygroupids = implode(',', $mygroupids); 00305 $cm->mygroupids = $mygroupids; 00306 00307 if (!$mcm = $DB->get_record_sql("SELECT cm.id, MAX(chm.timestamp) AS lasttime 00308 FROM {course_modules} cm 00309 JOIN {chat} ch ON ch.id = cm.instance 00310 JOIN {chat_messages_current} chm ON chm.chatid = ch.id 00311 WHERE chm.timestamp > ? AND cm.id = ? AND 00312 (chm.groupid IN ($mygroupids) OR chm.groupid = 0) 00313 GROUP BY cm.id", array($timestart, $cm->id))) { 00314 continue; 00315 } 00316 00317 $cm->lasttime = $mcm->lasttime; 00318 if ($timeout > time() - $cm->lasttime) { 00319 $current[] = $cm; 00320 } else { 00321 $past[] = $cm; 00322 } 00323 } 00324 00325 if (!$past and !$current) { 00326 return false; 00327 } 00328 00329 $strftimerecent = get_string('strftimerecent'); 00330 00331 if ($past) { 00332 echo $OUTPUT->heading(get_string("pastchats", 'chat').':'); 00333 00334 foreach ($past as $cm) { 00335 $link = $CFG->wwwroot.'/mod/chat/view.php?id='.$cm->id; 00336 $date = userdate($cm->lasttime, $strftimerecent); 00337 echo '<div class="head"><div class="date">'.$date.'</div></div>'; 00338 echo '<div class="info"><a href="'.$link.'">'.format_string($cm->name,true).'</a></div>'; 00339 } 00340 } 00341 00342 if ($current) { 00343 echo $OUTPUT->heading(get_string("currentchats", 'chat').':'); 00344 00345 $oldest = floor((time()-$CFG->chat_old_ping)/10)*10; // better db caching 00346 00347 $timeold = time() - $CFG->chat_old_ping; 00348 $timeold = floor($timeold/10)*10; // better db caching 00349 $timeoldext = time() - ($CFG->chat_old_ping*10); // JSless gui_basic needs much longer timeouts 00350 $timeoldext = floor($timeoldext/10)*10; // better db caching 00351 00352 $params = array('timeold'=>$timeold, 'timeoldext'=>$timeoldext, 'cmid'=>$cm->id); 00353 00354 $timeout = "AND (chu.version<>'basic' AND chu.lastping>:timeold) OR (chu.version='basic' AND chu.lastping>:timeoldext)"; 00355 00356 foreach ($current as $cm) { 00357 //count users first 00358 if (isset($cm->mygroupids)) { 00359 $groupselect = "AND (chu.groupid IN ({$cm->mygroupids}) OR chu.groupid = 0)"; 00360 } else { 00361 $groupselect = ""; 00362 } 00363 00364 if (!$users = $DB->get_records_sql("SELECT u.id, u.firstname, u.lastname, u.email, u.picture 00365 FROM {course_modules} cm 00366 JOIN {chat} ch ON ch.id = cm.instance 00367 JOIN {chat_users} chu ON chu.chatid = ch.id 00368 JOIN {user} u ON u.id = chu.userid 00369 WHERE cm.id = :cmid $timeout $groupselect 00370 GROUP BY u.id, u.firstname, u.lastname, u.email, u.picture", $params)) { 00371 } 00372 00373 $link = $CFG->wwwroot.'/mod/chat/view.php?id='.$cm->id; 00374 $date = userdate($cm->lasttime, $strftimerecent); 00375 00376 echo '<div class="head"><div class="date">'.$date.'</div></div>'; 00377 echo '<div class="info"><a href="'.$link.'">'.format_string($cm->name,true).'</a></div>'; 00378 echo '<div class="userlist">'; 00379 if ($users) { 00380 echo '<ul>'; 00381 foreach ($users as $user) { 00382 echo '<li>'.fullname($user, $viewfullnames).'</li>'; 00383 } 00384 echo '</ul>'; 00385 } 00386 echo '</div>'; 00387 } 00388 } 00389 00390 return true; 00391 } 00392 00401 function chat_cron () { 00402 global $DB; 00403 00404 chat_update_chat_times(); 00405 00406 chat_delete_old_users(); 00407 00410 $subselect = "SELECT c.keepdays 00411 FROM {chat} c 00412 WHERE c.id = {chat_messages}.chatid"; 00413 00414 $sql = "DELETE 00415 FROM {chat_messages} 00416 WHERE ($subselect) > 0 AND timestamp < ( ".time()." -($subselect) * 24 * 3600)"; 00417 00418 $DB->execute($sql); 00419 00420 $sql = "DELETE 00421 FROM {chat_messages_current} 00422 WHERE timestamp < ( ".time()." - 8 * 3600)"; 00423 00424 $DB->execute($sql); 00425 00426 return true; 00427 } 00428 00439 function chat_get_participants($chatid, $groupid=0) { 00440 global $DB; 00441 00442 $params = array('groupid'=>$groupid, 'chatid'=>$chatid); 00443 00444 if ($groupid) { 00445 $groupselect = " AND (c.groupid=:groupid OR c.groupid='0')"; 00446 } else { 00447 $groupselect = ""; 00448 } 00449 00450 //Get students 00451 $students = $DB->get_records_sql("SELECT DISTINCT u.id, u.id 00452 FROM {user} u, {chat_messages} c 00453 WHERE c.chatid = :chatid $groupselect 00454 AND u.id = c.userid", $params); 00455 00456 //Return students array (it contains an array of unique users) 00457 return ($students); 00458 } 00459 00471 function chat_refresh_events($courseid = 0) { 00472 global $DB; 00473 00474 if ($courseid) { 00475 if (! $chats = $DB->get_records("chat", array("course"=>$courseid))) { 00476 return true; 00477 } 00478 } else { 00479 if (! $chats = $DB->get_records("chat")) { 00480 return true; 00481 } 00482 } 00483 $moduleid = $DB->get_field('modules', 'id', array('name'=>'chat')); 00484 00485 foreach ($chats as $chat) { 00486 $cm = get_coursemodule_from_id('chat', $chat->id); 00487 $event = new stdClass(); 00488 $event->name = $chat->name; 00489 $event->description = format_module_intro('chat', $chat, $cm->id); 00490 $event->timestart = $chat->chattime; 00491 00492 if ($event->id = $DB->get_field('event', 'id', array('modulename'=>'chat', 'instance'=>$chat->id))) { 00493 $calendarevent = calendar_event::load($event->id); 00494 $calendarevent->update($event); 00495 } else { 00496 $event->courseid = $chat->course; 00497 $event->groupid = 0; 00498 $event->userid = 0; 00499 $event->modulename = 'chat'; 00500 $event->instance = $chat->id; 00501 $event->eventtype = 'chattime'; 00502 $event->timeduration = 0; 00503 $event->visible = $DB->get_field('course_modules', 'visible', array('module'=>$moduleid, 'instance'=>$chat->id)); 00504 00505 calendar_event::create($event); 00506 } 00507 } 00508 return true; 00509 } 00510 00511 00514 00522 function chat_get_users($chatid, $groupid=0, $groupingid=0) { 00523 global $DB; 00524 00525 $params = array('chatid'=>$chatid, 'groupid'=>$groupid, 'groupingid'=>$groupingid); 00526 00527 if ($groupid) { 00528 $groupselect = " AND (c.groupid=:groupid OR c.groupid='0')"; 00529 } else { 00530 $groupselect = ""; 00531 } 00532 00533 if (!empty($groupingid)) { 00534 $groupingjoin = "JOIN {groups_members} gm ON u.id = gm.userid 00535 JOIN {groupings_groups} gg ON gm.groupid = gg.groupid AND gg.groupingid = :groupingid "; 00536 00537 } else { 00538 $groupingjoin = ''; 00539 } 00540 00541 $ufields = user_picture::fields('u'); 00542 return $DB->get_records_sql("SELECT DISTINCT $ufields, c.lastmessageping, c.firstping 00543 FROM {chat_users} c 00544 JOIN {user} u ON u.id = c.userid $groupingjoin 00545 WHERE c.chatid = :chatid $groupselect 00546 ORDER BY c.firstping ASC", $params); 00547 } 00548 00555 function chat_get_latest_message($chatid, $groupid=0) { 00556 global $DB; 00557 00558 $params = array('chatid'=>$chatid, 'groupid'=>$groupid); 00559 00560 if ($groupid) { 00561 $groupselect = "AND (groupid=:groupid OR groupid=0)"; 00562 } else { 00563 $groupselect = ""; 00564 } 00565 00566 $sql = "SELECT * 00567 FROM {chat_messages_current} WHERE chatid = :chatid $groupselect 00568 ORDER BY timestamp DESC"; 00569 00570 // return the lastest one message 00571 return $DB->get_record_sql($sql, $params, true); 00572 } 00573 00574 00576 // login if not already logged in 00577 00589 function chat_login_user($chatid, $version, $groupid, $course) { 00590 global $USER, $DB; 00591 00592 if (($version != 'sockets') and $chatuser = $DB->get_record('chat_users', array('chatid'=>$chatid, 'userid'=>$USER->id, 'groupid'=>$groupid))) { 00593 // this will update logged user information 00594 $chatuser->version = $version; 00595 $chatuser->ip = $USER->lastip; 00596 $chatuser->lastping = time(); 00597 $chatuser->lang = current_language(); 00598 00599 // Sometimes $USER->lastip is not setup properly 00600 // during login. Update with current value if possible 00601 // or provide a dummy value for the db 00602 if (empty($chatuser->ip)) { 00603 $chatuser->ip = getremoteaddr(); 00604 } 00605 00606 if (($chatuser->course != $course->id) or ($chatuser->userid != $USER->id)) { 00607 return false; 00608 } 00609 $DB->update_record('chat_users', $chatuser); 00610 00611 } else { 00612 $chatuser = new stdClass(); 00613 $chatuser->chatid = $chatid; 00614 $chatuser->userid = $USER->id; 00615 $chatuser->groupid = $groupid; 00616 $chatuser->version = $version; 00617 $chatuser->ip = $USER->lastip; 00618 $chatuser->lastping = $chatuser->firstping = $chatuser->lastmessageping = time(); 00619 $chatuser->sid = random_string(32); 00620 $chatuser->course = $course->id; //caching - needed for current_language too 00621 $chatuser->lang = current_language(); //caching - to resource intensive to find out later 00622 00623 // Sometimes $USER->lastip is not setup properly 00624 // during login. Update with current value if possible 00625 // or provide a dummy value for the db 00626 if (empty($chatuser->ip)) { 00627 $chatuser->ip = getremoteaddr(); 00628 } 00629 00630 00631 $DB->insert_record('chat_users', $chatuser); 00632 00633 if ($version == 'sockets') { 00634 // do not send 'enter' message, chatd will do it 00635 } else { 00636 $message = new stdClass(); 00637 $message->chatid = $chatuser->chatid; 00638 $message->userid = $chatuser->userid; 00639 $message->groupid = $groupid; 00640 $message->message = 'enter'; 00641 $message->system = 1; 00642 $message->timestamp = time(); 00643 00644 $DB->insert_record('chat_messages', $message); 00645 $DB->insert_record('chat_messages_current', $message); 00646 } 00647 } 00648 00649 return $chatuser->sid; 00650 } 00651 00658 function chat_delete_old_users() { 00659 // Delete the old and in the way 00660 global $CFG, $DB; 00661 00662 $timeold = time() - $CFG->chat_old_ping; 00663 $timeoldext = time() - ($CFG->chat_old_ping*10); // JSless gui_basic needs much longer timeouts 00664 00665 $query = "(version<>'basic' AND lastping<?) OR (version='basic' AND lastping<?)"; 00666 $params = array($timeold, $timeoldext); 00667 00668 if ($oldusers = $DB->get_records_select('chat_users', $query, $params) ) { 00669 $DB->delete_records_select('chat_users', $query, $params); 00670 foreach ($oldusers as $olduser) { 00671 $message = new stdClass(); 00672 $message->chatid = $olduser->chatid; 00673 $message->userid = $olduser->userid; 00674 $message->groupid = $olduser->groupid; 00675 $message->message = 'exit'; 00676 $message->system = 1; 00677 $message->timestamp = time(); 00678 00679 $DB->insert_record('chat_messages', $message); 00680 $DB->insert_record('chat_messages_current', $message); 00681 } 00682 } 00683 } 00684 00692 function chat_update_chat_times($chatid=0) { 00694 global $DB; 00695 00696 $timenow = time(); 00697 00698 $params = array('timenow'=>$timenow, 'chatid'=>$chatid); 00699 00700 if ($chatid) { 00701 if (!$chats[] = $DB->get_record_select("chat", "id = :chatid AND chattime <= :timenow AND schedule > 0", $params)) { 00702 return; 00703 } 00704 } else { 00705 if (!$chats = $DB->get_records_select("chat", "chattime <= :timenow AND schedule > 0", $params)) { 00706 return; 00707 } 00708 } 00709 00710 foreach ($chats as $chat) { 00711 switch ($chat->schedule) { 00712 case 1: // Single event - turn off schedule and disable 00713 $chat->chattime = 0; 00714 $chat->schedule = 0; 00715 break; 00716 case 2: // Repeat daily 00717 while ($chat->chattime <= $timenow) { 00718 $chat->chattime += 24 * 3600; 00719 } 00720 break; 00721 case 3: // Repeat weekly 00722 while ($chat->chattime <= $timenow) { 00723 $chat->chattime += 7 * 24 * 3600; 00724 } 00725 break; 00726 } 00727 $DB->update_record("chat", $chat); 00728 00729 $event = new stdClass(); // Update calendar too 00730 00731 $cond = "modulename='chat' AND instance = :chatid AND timestart <> :chattime"; 00732 $params = array('chattime'=>$chat->chattime, 'chatid'=>$chatid); 00733 00734 if ($event->id = $DB->get_field_select('event', 'id', $cond, $params)) { 00735 $event->timestart = $chat->chattime; 00736 $calendarevent = calendar_event::load($event->id); 00737 $calendarevent->update($event, false); 00738 } 00739 } 00740 } 00741 00752 function chat_format_message_manually($message, $courseid, $sender, $currentuser, $chat_lastrow=NULL) { 00753 global $CFG, $USER, $OUTPUT; 00754 00755 $output = new stdClass(); 00756 $output->beep = false; // by default 00757 $output->refreshusers = false; // by default 00758 00759 // Use get_user_timezone() to find the correct timezone for displaying this message: 00760 // It's either the current user's timezone or else decided by some Moodle config setting 00761 // First, "reset" $USER->timezone (which could have been set by a previous call to here) 00762 // because otherwise the value for the previous $currentuser will take precedence over $CFG->timezone 00763 $USER->timezone = 99; 00764 $tz = get_user_timezone($currentuser->timezone); 00765 00766 // Before formatting the message time string, set $USER->timezone to the above. 00767 // This will allow dst_offset_on (called by userdate) to work correctly, otherwise the 00768 // message times appear off because DST is not taken into account when it should be. 00769 $USER->timezone = $tz; 00770 $message->strtime = userdate($message->timestamp, get_string('strftimemessage', 'chat'), $tz); 00771 00772 $message->picture = $OUTPUT->user_picture($sender, array('size'=>false, 'courseid'=>$courseid, 'link'=>false)); 00773 00774 if ($courseid) { 00775 $message->picture = "<a onclick=\"window.open('$CFG->wwwroot/user/view.php?id=$sender->id&course=$courseid')\" href=\"$CFG->wwwroot/user/view.php?id=$sender->id&course=$courseid\">$message->picture</a>"; 00776 } 00777 00778 //Calculate the row class 00779 if ($chat_lastrow !== NULL) { 00780 $rowclass = ' class="r'.$chat_lastrow.'" '; 00781 } else { 00782 $rowclass = ''; 00783 } 00784 00785 // Start processing the message 00786 00787 if(!empty($message->system)) { 00788 // System event 00789 $output->text = $message->strtime.': '.get_string('message'.$message->message, 'chat', fullname($sender)); 00790 $output->html = '<table class="chat-event"><tr'.$rowclass.'><td class="picture">'.$message->picture.'</td><td class="text">'; 00791 $output->html .= '<span class="event">'.$output->text.'</span></td></tr></table>'; 00792 $output->basic = '<dl><dt class="event">'.$message->strtime.': '.get_string('message'.$message->message, 'chat', fullname($sender)).'</dt></dl>'; 00793 00794 if($message->message == 'exit' or $message->message == 'enter') { 00795 $output->refreshusers = true; //force user panel refresh ASAP 00796 } 00797 return $output; 00798 } 00799 00800 // It's not a system event 00801 00802 $text = $message->message; 00803 00805 00806 $options = new stdClass(); 00807 $options->para = false; 00808 $text = format_text($text, FORMAT_MOODLE, $options, $courseid); 00809 00810 // And now check for special cases 00811 $special = false; 00812 00813 if (substr($text, 0, 5) == 'beep ') { 00815 $special = true; 00816 $beepwho = trim(substr($text, 5)); 00817 00818 if ($beepwho == 'all') { // everyone 00819 $outinfo = $message->strtime.': '.get_string('messagebeepseveryone', 'chat', fullname($sender)); 00820 $outmain = ''; 00821 $output->beep = true; // (eventually this should be set to 00822 // to a filename uploaded by the user) 00823 00824 } else if ($beepwho == $currentuser->id) { // current user 00825 $outinfo = $message->strtime.': '.get_string('messagebeepsyou', 'chat', fullname($sender)); 00826 $outmain = ''; 00827 $output->beep = true; 00828 00829 } else { //something is not caught? 00830 return false; 00831 } 00832 } else if (substr($text, 0, 1) == '/') { 00833 // support some IRC commands 00834 $pattern = '#(^\/)(\w+).*#'; 00835 preg_match($pattern, trim($text), $matches); 00836 $command = $matches[2]; 00837 switch ($command){ 00838 case 'me': 00839 $special = true; 00840 $outinfo = $message->strtime; 00841 $outmain = '*** <b>'.$sender->firstname.' '.substr($text, 4).'</b>'; 00842 break; 00843 } 00844 } elseif (substr($text, 0, 2) == 'To') { 00845 $pattern = '#To[[:space:]](.*):(.*)#'; 00846 preg_match($pattern, trim($text), $matches); 00847 $special = true; 00848 $outinfo = $message->strtime; 00849 $outmain = $sender->firstname.' '.get_string('saidto', 'chat').' <i>'.$matches[1].'</i>: '.$matches[2]; 00850 } 00851 00852 if(!$special) { 00853 $outinfo = $message->strtime.' '.$sender->firstname; 00854 $outmain = $text; 00855 } 00856 00858 00859 $output->text = strip_tags($outinfo.': '.$outmain); 00860 00861 $output->html = "<table class=\"chat-message\"><tr$rowclass><td class=\"picture\" valign=\"top\">$message->picture</td><td class=\"text\">"; 00862 $output->html .= "<span class=\"title\">$outinfo</span>"; 00863 if ($outmain) { 00864 $output->html .= ": $outmain"; 00865 $output->basic = '<dl><dt class="title">'.$outinfo.':</dt><dd class="text">'.$outmain.'</dd></dl>'; 00866 } else { 00867 $output->basic = '<dl><dt class="title">'.$outinfo.'</dt></dl>'; 00868 } 00869 $output->html .= "</td></tr></table>"; 00870 return $output; 00871 } 00872 00881 function chat_format_message($message, $courseid, $currentuser, $chat_lastrow=NULL) { 00885 global $DB; 00886 00887 static $users; // Cache user lookups 00888 00889 if (isset($users[$message->userid])) { 00890 $user = $users[$message->userid]; 00891 } else if ($user = $DB->get_record('user', array('id'=>$message->userid), user_picture::fields())) { 00892 $users[$message->userid] = $user; 00893 } else { 00894 return NULL; 00895 } 00896 return chat_format_message_manually($message, $courseid, $user, $currentuser, $chat_lastrow); 00897 } 00898 00908 function chat_format_message_theme ($message, $chatuser, $currentuser, $groupingid, $theme = 'bubble') { 00909 global $CFG, $USER, $OUTPUT, $COURSE, $DB; 00910 00911 static $users; // Cache user lookups 00912 00913 $result = new stdClass(); 00914 00915 if (file_exists($CFG->dirroot . '/mod/chat/gui_ajax/theme/'.$theme.'/config.php')) { 00916 include($CFG->dirroot . '/mod/chat/gui_ajax/theme/'.$theme.'/config.php'); 00917 } 00918 00919 if (isset($users[$message->userid])) { 00920 $sender = $users[$message->userid]; 00921 } else if ($sender = $DB->get_record('user', array('id'=>$message->userid), user_picture::fields())) { 00922 $users[$message->userid] = $sender; 00923 } else { 00924 return NULL; 00925 } 00926 00927 $USER->timezone = 99; 00928 $tz = get_user_timezone($currentuser->timezone); 00929 $USER->timezone = $tz; 00930 00931 if (empty($chatuser->course)) { 00932 $courseid = $COURSE->id; 00933 } else { 00934 $courseid = $chatuser->course; 00935 } 00936 00937 $message->strtime = userdate($message->timestamp, get_string('strftimemessage', 'chat'), $tz); 00938 $message->picture = $OUTPUT->user_picture($sender, array('courseid'=>$courseid)); 00939 00940 $message->picture = "<a target='_blank' href=\"$CFG->wwwroot/user/view.php?id=$sender->id&course=$courseid\">$message->picture</a>"; 00941 00942 // Start processing the message 00943 if(!empty($message->system)) { 00944 $result->type = 'system'; 00945 00946 $userlink = new moodle_url('/user/view.php', array('id'=>$message->userid,'course'=>$courseid)); 00947 00948 $patterns = array(); 00949 $replacements = array(); 00950 $patterns[] = '___senderprofile___'; 00951 $patterns[] = '___sender___'; 00952 $patterns[] = '___time___'; 00953 $patterns[] = '___event___'; 00954 $replacements[] = $CFG->wwwroot.'/user/view.php?id='.$sender->id.'&course='.$courseid; 00955 $replacements[] = fullname($sender); 00956 $replacements[] = $message->strtime; 00957 $replacements[] = get_string('message'.$message->message, 'chat', fullname($sender)); 00958 $result->html = str_replace($patterns, $replacements, $chattheme_cfg->event_message); 00959 return $result; 00960 } 00961 00962 // It's not a system event 00963 $text = $message->message; 00964 00966 $options = new stdClass(); 00967 $options->para = false; 00968 $text = format_text($text, FORMAT_MOODLE, $options, $courseid); 00969 00970 // And now check for special cases 00971 $special = false; 00972 $outtime = $message->strtime; 00973 00974 //Initilise output variable. 00975 $outmain = ''; 00976 00977 if (substr($text, 0, 5) == 'beep ') { 00978 $special = true; 00980 $result->type = 'beep'; 00981 $beepwho = trim(substr($text, 5)); 00982 00983 if ($beepwho == 'all') { // everyone 00984 $outmain = get_string('messagebeepseveryone', 'chat', fullname($sender)); 00985 } else if ($beepwho == $currentuser->id) { // current user 00986 $outmain = get_string('messagebeepsyou', 'chat', fullname($sender)); 00987 } else if ($sender->id == $currentuser->id) { //something is not caught? 00988 //allow beep for a active chat user only, else user can beep anyone and get fullname 00989 if (!empty($chatuser) && is_numeric($beepwho)) { 00990 $chatusers = chat_get_users($chatuser->chatid, $chatuser->groupid, $groupingid); 00991 if (array_key_exists($beepwho, $chatusers)) { 00992 $outmain = get_string('messageyoubeep', 'chat', fullname($chatusers[$beepwho])); 00993 } else { 00994 $outmain = get_string('messageyoubeep', 'chat', $beepwho); 00995 } 00996 } else { 00997 $outmain = get_string('messageyoubeep', 'chat', $beepwho); 00998 } 00999 } 01000 } else if (substr($text, 0, 1) == '/') { 01001 $special = true; 01002 $result->type = 'command'; 01003 // support some IRC commands 01004 $pattern = '#(^\/)(\w+).*#'; 01005 preg_match($pattern, trim($text), $matches); 01006 $command = $matches[2]; 01007 $special = true; 01008 switch ($command){ 01009 case 'me': 01010 $outmain = '*** <b>'.$sender->firstname.' '.substr($text, 4).'</b>'; 01011 break; 01012 } 01013 } elseif (substr($text, 0, 2) == 'To') { 01014 $special = true; 01015 $result->type = 'dialogue'; 01016 $pattern = '#To[[:space:]](.*):(.*)#'; 01017 preg_match($pattern, trim($text), $matches); 01018 $special = true; 01019 $outmain = $sender->firstname.' <b>'.get_string('saidto', 'chat').'</b> <i>'.$matches[1].'</i>: '.$matches[2]; 01020 } 01021 01022 if(!$special) { 01023 $outmain = $text; 01024 } 01025 01026 $result->text = strip_tags($outtime.': '.$outmain); 01027 01028 $ismymessage = ''; 01029 $rightalign = ''; 01030 if ($sender->id == $USER->id) { 01031 $ismymessage = ' class="mymessage"'; 01032 $rightalign = ' align="right"'; 01033 } 01034 $patterns = array(); 01035 $replacements = array(); 01036 $patterns[] = '___avatar___'; 01037 $patterns[] = '___sender___'; 01038 $patterns[] = '___senderprofile___'; 01039 $patterns[] = '___time___'; 01040 $patterns[] = '___message___'; 01041 $patterns[] = '___mymessageclass___'; 01042 $patterns[] = '___tablealign___'; 01043 $replacements[] = $message->picture; 01044 $replacements[] = fullname($sender); 01045 $replacements[] = $CFG->wwwroot.'/user/view.php?id='.$sender->id.'&course='.$courseid; 01046 $replacements[] = $outtime; 01047 $replacements[] = $outmain; 01048 $replacements[] = $ismymessage; 01049 $replacements[] = $rightalign; 01050 if (!empty($chattheme_cfg->avatar) and !empty($chattheme_cfg->align)) { 01051 if (!empty($ismymessage)) { 01052 $result->html = str_replace($patterns, $replacements, $chattheme_cfg->user_message_right); 01053 } else { 01054 $result->html = str_replace($patterns, $replacements, $chattheme_cfg->user_message_left); 01055 } 01056 } else { 01057 $result->html = str_replace($patterns, $replacements, $chattheme_cfg->user_message); 01058 } 01059 01060 //When user beeps other user, then don't show any timestamp to other users in chat. 01061 if (('' === $outmain) && $special) { 01062 return false; 01063 } else { 01064 return $result; 01065 } 01066 } 01067 01068 01078 function chat_format_userlist($users, $course) { 01079 global $CFG, $DB, $COURSE, $OUTPUT; 01080 $result = array(); 01081 foreach($users as $user){ 01082 $item = array(); 01083 $item['name'] = fullname($user); 01084 $item['url'] = $CFG->wwwroot.'/user/view.php?id='.$user->id.'&course='.$course->id; 01085 $item['picture'] = $OUTPUT->user_picture($user); 01086 $item['id'] = $user->id; 01087 $result[] = $item; 01088 } 01089 return $result; 01090 } 01091 01097 function chat_print_error($level, $msg) { 01098 header('Content-Length: ' . ob_get_length() ); 01099 $error = new stdClass(); 01100 $error->level = $level; 01101 $error->msg = $msg; 01102 $response['error'] = $error; 01103 echo json_encode($response); 01104 ob_end_flush(); 01105 exit; 01106 } 01107 01111 function chat_get_view_actions() { 01112 return array('view','view all','report'); 01113 } 01114 01118 function chat_get_post_actions() { 01119 return array('talk'); 01120 } 01121 01128 function chat_print_overview($courses, &$htmlarray) { 01129 global $USER, $CFG; 01130 01131 if (empty($courses) || !is_array($courses) || count($courses) == 0) { 01132 return array(); 01133 } 01134 01135 if (!$chats = get_all_instances_in_courses('chat',$courses)) { 01136 return; 01137 } 01138 01139 $strchat = get_string('modulename', 'chat'); 01140 $strnextsession = get_string('nextsession', 'chat'); 01141 01142 foreach ($chats as $chat) { 01143 if ($chat->chattime and $chat->schedule) { // A chat is scheduled 01144 $str = '<div class="chat overview"><div class="name">'. 01145 $strchat.': <a '.($chat->visible?'':' class="dimmed"'). 01146 ' href="'.$CFG->wwwroot.'/mod/chat/view.php?id='.$chat->coursemodule.'">'. 01147 $chat->name.'</a></div>'; 01148 $str .= '<div class="info">'.$strnextsession.': '.userdate($chat->chattime).'</div></div>'; 01149 01150 if (empty($htmlarray[$chat->course]['chat'])) { 01151 $htmlarray[$chat->course]['chat'] = $str; 01152 } else { 01153 $htmlarray[$chat->course]['chat'] .= $str; 01154 } 01155 } 01156 } 01157 } 01158 01159 01166 function chat_reset_course_form_definition(&$mform) { 01167 $mform->addElement('header', 'chatheader', get_string('modulenameplural', 'chat')); 01168 $mform->addElement('advcheckbox', 'reset_chat', get_string('removemessages','chat')); 01169 } 01170 01177 function chat_reset_course_form_defaults($course) { 01178 return array('reset_chat'=>1); 01179 } 01180 01190 function chat_reset_userdata($data) { 01191 global $CFG, $DB; 01192 01193 $componentstr = get_string('modulenameplural', 'chat'); 01194 $status = array(); 01195 01196 if (!empty($data->reset_chat)) { 01197 $chatessql = "SELECT ch.id 01198 FROM {chat} ch 01199 WHERE ch.course=?"; 01200 $params = array($data->courseid); 01201 01202 $DB->delete_records_select('chat_messages', "chatid IN ($chatessql)", $params); 01203 $DB->delete_records_select('chat_messages_current', "chatid IN ($chatessql)", $params); 01204 $DB->delete_records_select('chat_users', "chatid IN ($chatessql)", $params); 01205 $status[] = array('component'=>$componentstr, 'item'=>get_string('removemessages', 'chat'), 'error'=>false); 01206 } 01207 01209 if ($data->timeshift) { 01210 shift_course_mod_dates('chat', array('chattime'), $data->timeshift, $data->courseid); 01211 $status[] = array('component'=>$componentstr, 'item'=>get_string('datechanged'), 'error'=>false); 01212 } 01213 01214 return $status; 01215 } 01216 01222 function chat_get_extra_capabilities() { 01223 return array('moodle/site:accessallgroups', 'moodle/site:viewfullnames'); 01224 } 01225 01226 01231 function chat_supports($feature) { 01232 switch($feature) { 01233 case FEATURE_GROUPS: return true; 01234 case FEATURE_GROUPINGS: return true; 01235 case FEATURE_GROUPMEMBERSONLY: return true; 01236 case FEATURE_MOD_INTRO: return true; 01237 case FEATURE_BACKUP_MOODLE2: return true; 01238 case FEATURE_COMPLETION_TRACKS_VIEWS: return true; 01239 case FEATURE_GRADE_HAS_GRADE: return false; 01240 case FEATURE_GRADE_OUTCOMES: return true; 01241 case FEATURE_SHOW_DESCRIPTION: return true; 01242 01243 default: return null; 01244 } 01245 } 01246 01247 function chat_extend_navigation($navigation, $course, $module, $cm) { 01248 global $CFG, $USER, $PAGE, $OUTPUT; 01249 01250 $currentgroup = groups_get_activity_group($cm, true); 01251 01252 if (has_capability('mod/chat:chat', get_context_instance(CONTEXT_MODULE, $cm->id))) { 01253 $strenterchat = get_string('enterchat', 'chat'); 01254 01255 $target = $CFG->wwwroot.'/mod/chat/'; 01256 $params = array('id'=>$cm->instance); 01257 01258 if ($currentgroup) { 01259 $params['groupid'] = $currentgroup; 01260 } 01261 01262 $links = array(); 01263 01264 // If user is using screenreader, display gui_basic gui link only 01265 if (empty($USER->screenreader)) { 01266 $url = new moodle_url($target.'gui_'.$CFG->chat_method.'/index.php', $params); 01267 $action = new popup_action('click', $url, 'chat'.$course->id.$cm->instance.$currentgroup, array('height' => 500, 'width' => 700)); 01268 $links[] = new action_link($url, $strenterchat, $action); 01269 } 01270 01271 $url = new moodle_url($target.'gui_basic/index.php', $params); 01272 $action = new popup_action('click', $url, 'chat'.$course->id.$cm->instance.$currentgroup, array('height' => 500, 'width' => 700)); 01273 $links[] = new action_link($url, get_string('noframesjs', 'message'), $action); 01274 01275 foreach ($links as $link) { 01276 $navigation->add($link->text, $link, navigation_node::TYPE_SETTING, null ,null, new pix_icon('c/group' , '')); 01277 } 01278 } 01279 01280 $chatusers = chat_get_users($cm->instance, $currentgroup, $cm->groupingid); 01281 if (is_array($chatusers) && count($chatusers)>0) { 01282 $users = $navigation->add(get_string('currentusers', 'chat')); 01283 foreach ($chatusers as $chatuser) { 01284 $userlink = new moodle_url('/user/view.php', array('id'=>$chatuser->id,'course'=>$course->id)); 01285 $users->add(fullname($chatuser).' '.format_time(time() - $chatuser->lastmessageping), $userlink, navigation_node::TYPE_USER, null, null, new pix_icon('c/user', '')); 01286 } 01287 } 01288 } 01289 01296 function chat_extend_settings_navigation(settings_navigation $settings, navigation_node $chatnode) { 01297 global $DB, $PAGE, $USER; 01298 $chat = $DB->get_record("chat", array("id" => $PAGE->cm->instance)); 01299 01300 if ($chat->chattime && $chat->schedule) { 01301 $nextsessionnode = $chatnode->add(get_string('nextsession', 'chat').': '.userdate($chat->chattime).' ('.usertimezone($USER->timezone)); 01302 $nextsessionnode->add_class('note'); 01303 } 01304 01305 $currentgroup = groups_get_activity_group($PAGE->cm, true); 01306 if ($currentgroup) { 01307 $groupselect = " AND groupid = '$currentgroup'"; 01308 } else { 01309 $groupselect = ''; 01310 } 01311 01312 if ($chat->studentlogs || has_capability('mod/chat:readlog',$PAGE->cm->context)) { 01313 if ($DB->get_records_select('chat_messages', "chatid = ? $groupselect", array($chat->id))) { 01314 $chatnode->add(get_string('viewreport', 'chat'), new moodle_url('/mod/chat/report.php', array('id'=>$PAGE->cm->id))); 01315 } 01316 } 01317 } 01318 01324 function chat_user_logout($user) { 01325 global $DB; 01326 $DB->delete_records('chat_users', array('userid'=>$user->id)); 01327 } 01328 01335 function chat_page_type_list($pagetype, $parentcontext, $currentcontext) { 01336 $module_pagetype = array('mod-chat-*'=>get_string('page-mod-chat-x', 'chat')); 01337 return $module_pagetype; 01338 }
1.7.6.1 
