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"MDL-14651, improve ajax chat module"
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dongsheng
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Sep 5, 2009
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| #messages-list, #users-list{list-style-type:none;padding:0;margin:0} | ||
| #chat-header { | ||
| background: transparent; | ||
| font-size: 200%; | ||
| overflow: hidden; | ||
| } | ||
| #chat-header p { | ||
| display:inline; | ||
| font-size: 50%; | ||
| color: grey; | ||
| } | ||
| .time{ | ||
| font-weight: bold; | ||
| } | ||
| .user{ | ||
| color:blue; | ||
| } | ||
| .chat-event{ | ||
| text-align:center; | ||
| color:grey; | ||
| } | ||
| .yui-skin-sam .yui-layout .yui-layout-unit div.yui-layout-bd { | ||
| background: transparent; | ||
| } | ||
| .yui-layout-unit-top { | ||
| background: #FFE39D; | ||
| } | ||
| .yui-layout-unit-right { | ||
| border-top: 5px solid white; | ||
| background: #FFD46B; | ||
| } | ||
| .yui-layout-unit-bottom { | ||
| border-top: 5px solid white; | ||
| background: #FFCB44; | ||
| } | ||
| .yui-skin-sam .yui-layout .yui-layout-unit div.yui-layout-unit-right { | ||
| background: white; | ||
| } | ||
| .yui-skin-sam .yui-layout .yui-layout-unit div.yui-layout-bd { | ||
| border:0; | ||
| } | ||
| .yui-skin-sam .yui-layout .yui-layout-hd { | ||
| border:0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| <?php | ||
| // This file is part of Moodle - http://moodle.org/ | ||
| // | ||
| // Moodle is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // Moodle is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with Moodle. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| require_once(dirname(dirname(dirname(__FILE__))) . '/config.php'); | ||
| require_once(dirname(__FILE__) . '/lib.php'); | ||
|
|
||
| $action = optional_param('action', '', PARAM_ALPHANUM); | ||
| $beep_id = optional_param('beep', '', PARAM_RAW); | ||
| $chat_sid = required_param('chat_sid', PARAM_ALPHANUM); | ||
| $chat_message = optional_param('chat_message', '', PARAM_RAW); | ||
| $chat_lasttime = optional_param('chat_lasttime', 0, PARAM_INT); | ||
| $chat_lastrow = optional_param('chat_lastrow', 1, PARAM_INT); | ||
|
|
||
|
|
||
| if (!$chatuser = $DB->get_record('chat_users', array('sid'=>$chat_sid))) { | ||
| chat_print_error('ERROR', get_string('notlogged','chat')); | ||
| } | ||
| if (!$chat = $DB->get_record('chat', array('id'=>$chatuser->chatid))) { | ||
| chat_print_error('ERROR', get_string('invalidcoursemodule', 'error')); | ||
| } | ||
| if (!$course = $DB->get_record('course', array('id'=>$chat->course))) { | ||
| chat_print_error('ERROR', get_string('invaliduserid', 'error')); | ||
| } | ||
| if (!$cm = get_coursemodule_from_instance('chat', $chat->id, $course->id)) { | ||
| chat_print_error('ERROR', get_string('invalidcoursemodule', 'error')); | ||
| } | ||
| if (isguest()) { | ||
| chat_print_error('ERROR', get_string('notlogged','chat')); | ||
| } | ||
|
|
||
| // setup $PAGE so that format_text will work properly | ||
| $PAGE->set_cm($cm, $course, $chat); | ||
|
|
||
| ob_start(); | ||
| header('Expires: Sun, 28 Dec 1997 09:32:45 GMT'); | ||
| header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); | ||
| header('Cache-Control: no-cache, must-revalidate'); | ||
| header('Pragma: no-cache'); | ||
| header('Content-Type: text/html; charset=utf-8'); | ||
| header('X-Powered-By: MOODLE-Chat-V2'); | ||
|
|
||
| switch ($action) { | ||
| case 'init': | ||
| if($CFG->chat_use_cache){ | ||
| $cache = new file_cache(); | ||
| $users = $cache->get('user'); | ||
| if(empty($users)) { | ||
| $users = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid); | ||
| $cache->set('user', $users); | ||
| } | ||
| } else { | ||
| $users = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid); | ||
| } | ||
| $users = chat_format_userlist($users, $course); | ||
| $response['users'] = $users; | ||
| echo json_encode($response); | ||
| break; | ||
| case 'chat': | ||
| session_get_instance()->write_close(); | ||
| chat_delete_old_users(); | ||
| $chat_message = clean_text($chat_message, FORMAT_MOODLE); | ||
|
|
||
| if (!empty($beep_id)) { | ||
| $chat_message = 'beep '.$beep_id; | ||
| } | ||
|
|
||
| if (!empty($chat_message)) { | ||
| $message = new object(); | ||
| $message->chatid = $chatuser->chatid; | ||
| $message->userid = $chatuser->userid; | ||
| $message->groupid = $chatuser->groupid; | ||
| $message->message = $chat_message; | ||
| $message->timestamp = time(); | ||
|
|
||
| $chatuser->lastmessageping = time() - 2; | ||
| $DB->update_record('chat_users', $chatuser); | ||
|
|
||
| if (!($DB->insert_record('chat_messages', $message) && $DB->insert_record('chat_messages_current', $message))) { | ||
| chat_print_error('ERROR', get_string('cantlogin','chat')); | ||
| } else { | ||
| echo 200; | ||
| } | ||
| add_to_log($course->id, 'chat', 'talk', "view.php?id=$cm->id", $chat->id, $cm->id); | ||
|
|
||
| ob_end_flush(); | ||
| } | ||
| break; | ||
| case 'update': | ||
| if ((time() - $chat_lasttime) > $CFG->chat_old_ping) { | ||
| chat_delete_old_users(); | ||
| } | ||
|
|
||
| if ($latest_message = chat_get_latest_message($chatuser->chatid, $chatuser->groupid)) { | ||
| $chat_newlasttime = $latest_message->timestamp; | ||
| } else { | ||
| $chat_newlasttime = 0; | ||
| } | ||
|
|
||
| if ($chat_lasttime == 0) { | ||
| $chat_lasttime = time() - $CFG->chat_old_ping; | ||
| } | ||
|
|
||
| $params = array('groupid'=>$chatuser->groupid, 'chatid'=>$chatuser->chatid, 'lasttime'=>$chat_lasttime); | ||
|
|
||
| $groupselect = $chatuser->groupid ? " AND (groupid=".$chatuser->groupid." OR groupid=0) " : ""; | ||
|
|
||
| $messages = $DB->get_records_select('chat_messages_current', | ||
| 'chatid = :chatid AND timestamp > :lasttime '.$groupselect, $params, | ||
| 'timestamp ASC'); | ||
|
|
||
| if (!empty($messages)) { | ||
| $num = count($messages); | ||
| } else { | ||
| $num = 0; | ||
| } | ||
| $chat_newrow = ($chat_lastrow + $num) % 2; | ||
| $send_user_list = false; | ||
| if ($messages && ($chat_lasttime != $chat_newlasttime)) { | ||
| foreach ($messages as $n => &$message) { | ||
| $tmp = new stdclass; | ||
| // when somebody enter room, user list will be updated | ||
| if($message->system == 1){ | ||
| $send_user_list = true; | ||
| $tmp->type = 'system'; | ||
| $users = chat_format_userlist(chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid), $course); | ||
| } | ||
| if ($html = chat_format_message($message, $chatuser->course, $USER, $chat_lastrow)) { | ||
| if ($html->beep) { | ||
| $tmp->type = 'beep'; | ||
| } elseif (empty($tmp->type)) { | ||
| $tmp->type = 'user'; | ||
| } | ||
| $tmp->mymessage = ($USER->id == $message->userid); | ||
| $tmp->msg = $html->html; | ||
| $message = $tmp; | ||
| } else { | ||
| unset($message); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if(!empty($users) && $send_user_list){ | ||
| // return users when system message coming | ||
| $response['users'] = $users; | ||
| } | ||
|
|
||
| $DB->set_field('chat_users', 'lastping', time(), array('id'=>$chatuser->id)); | ||
|
|
||
| $response['lasttime'] = $chat_newlasttime; | ||
| $response['lastrow'] = $chat_newrow; | ||
| if($messages){ | ||
| $response['msgs'] = $messages; | ||
| } | ||
|
|
||
| echo json_encode($response); | ||
| header('Content-Length: ' . ob_get_length() ); | ||
|
|
||
| ob_end_flush(); | ||
| break; | ||
| default: | ||
| break; | ||
| } |
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