mirror of
https://github.com/moodle/moodle.git
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"MDL-14651, improve ajax chat module"
This commit is contained in:
dongsheng
parent
1a3f83348d
commit
83064f9c24
8 changed files with 473 additions and 452 deletions
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@ -1,68 +0,0 @@
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<?php
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function microtime_float(){
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list($usec, $sec) = explode(" ", microtime());
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return ((float)$usec+(float)$sec);
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}
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function format_user_list($data, $course) {
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global $CFG, $DB, $COURSE, $OUTPUT;
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$users = array();
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foreach($data as $v){
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$user['name'] = fullname($v);
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$user['url'] = $CFG->wwwroot.'/user/view.php?id='.$v->id.'&course='.$course->id;
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$user['picture'] = $OUTPUT->user_picture(moodle_user_picture::make($v, $COURSE->id));
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$user['id'] = $v->id;
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$users[] = $user;
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}
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return $users;
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}
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function chat_print_error($level, $msg) {
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header('Content-Length: ' . ob_get_length() );
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$error = new stdclass;
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$error->level = $level;
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$error->msg = $msg;
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$response['error'] = $error;
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echo json_encode($response);
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ob_end_flush();
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exit;
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}
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class file_cache{
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private $dir = '';
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public function __construct($dir='/dev/shm'){
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$this->dir = $dir.'/chat_cache';
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if(!is_dir($this->dir)) {
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// create cache folder
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if(mkdir($this->dir, 777)) {
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$this->write('test', 'Deny from all');
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}
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}
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}
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private function write($name, $content){
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$name = $this->dir.'/'.$name.'.data';
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if (file_exists($name)) {
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unlink($name);
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}
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$fp = fopen($name, 'w');
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if($fp) {
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fputs($fp, $content);
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fclose($fp);
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}
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}
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public function get($name){
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$content = '';
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$fp = fopen($this->dir.'/'.$name.'.data', 'r');
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if ($fp){
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while(!feof($fp))
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$content .= fread($fp, 4096);
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fclose($fp);
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return unserialize($content);
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} else {
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return false;
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}
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}
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public function set($name, $content){
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$this->write($name, serialize($content));
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}
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}
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@ -1,7 +1,6 @@
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<?php
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require_once('../../../config.php');
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require_once('../lib.php');
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require_once('common.php');
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$id = required_param('id', PARAM_INT);
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$groupid = optional_param('groupid', 0, PARAM_INT); //only for teachers
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if (!$chat = $DB->get_record('chat', array('id'=>$id))) {
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@ -46,17 +45,11 @@ if (!$chat_sid = chat_login_user($chat->id, 'ajax', $groupid, $course)) {
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print_error('cantlogin', 'chat');
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}
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// language string
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$str_chat = get_string('modulename', 'chat'); // must be before current_language() in chat_login_user() to force course language!!!
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$str_send = get_string('send', 'chat');
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$str_sending = get_string('sending', 'chat');
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$str_title = format_string($course->shortname) . ": ".format_string($chat->name,true).$groupname;
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$str_inputarea = get_string('inputarea', 'chat');
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$str_userlist = get_string('userlist', 'chat');
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$str_title = format_string($course->shortname) . ": ".format_string($chat->name,true).$groupname;
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$str_send = get_string('send', 'chat');
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$PAGE->set_generaltype('popup');
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$PAGE->set_title('Chat');
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$PAGE->requires->yui_lib('dragdrop');
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$PAGE->requires->yui_lib('resize');
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$PAGE->requires->yui_lib('layout');
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@ -65,39 +58,55 @@ $PAGE->requires->yui_lib('connection');
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$PAGE->requires->yui_lib('json');
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$PAGE->requires->yui_lib('button');
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$PAGE->requires->yui_lib('selector');
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$PAGE->requires->data_for_js('chat_cfg', array('home'=>$CFG->httpswwwroot.'/mod/chat/view.php?id='.$cm->id, 'userid'=>$USER->id, 'sid'=>$chat_sid,'timer'=>5000, 'chat_lasttime'=>0,'chat_lastrow'=>null,'header_title'=>$str_chat,'chatroom_name'=>$str_title));
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$PAGE->requires->data_for_js('chat_lang', array('send'=>$str_send, 'sending'=>$str_sending, 'inputarea'=>$str_inputarea, 'userlist'=>$str_userlist));
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$PAGE->requires->data_for_js('chat_cfg', array(
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'home'=>$CFG->httpswwwroot.'/mod/chat/view.php?id='.$cm->id,
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'userid'=>$USER->id,
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'sid'=>$chat_sid,
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'timer'=>5000,
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'chat_lasttime'=>0,
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'chat_lastrow'=>null,
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'chatroom_name'=>$str_title
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));
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$PAGE->requires->string_for_js('send', 'chat');
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$PAGE->requires->string_for_js('sending', 'chat');
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$PAGE->requires->string_for_js('inputarea', 'chat');
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$PAGE->requires->string_for_js('userlist', 'chat');
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$PAGE->requires->string_for_js('modulename', 'chat');
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$PAGE->requires->string_for_js('beep', 'chat');
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$PAGE->requires->string_for_js('talk', 'chat');
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$PAGE->requires->js('mod/chat/gui_ajax/script.js');
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$PAGE->requires->yui_lib('animation')->in_head();
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$PAGE->requires->css('mod/chat/chat.css');
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$PAGE->add_body_class('yui-skin-sam');
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echo $OUTPUT->header();
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echo <<<STY
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<style type='text/css'>
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#messageslist{list-style-type:none;padding:0;margin:0}
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#listing a{text-decoration:none;color:gray}
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#listing a:hover {text-decoration:underline;color:white;background:blue}
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#listing{padding: .5em}
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h2{margin:0}
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</style>
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STY;
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echo $OUTPUT->heading($str_title, 1);
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$intro = format_text($chat->intro, $chat->introformat);
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echo $OUTPUT->heading($str_title,1);
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echo <<<DIVS
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<div id="chat_header">
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<div id="chat-header">
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{$chat->name} {$intro}
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</div>
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<div id="chat_input">
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<input type="text" id="input_msgbox" value="" size="48" />
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<input type="button" id="btn_send" value="$str_send" />
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</div>
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<div id="chat_user_list">
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<ul id="listing">
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<div id="chat-userlist">
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<ul id="users-list">
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<li></li>
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</ul>
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</div>
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<div id="chat_options">
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</div>
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<div id="chat_panel">
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<ul id="messageslist">
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<ul>
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<div id="chat-messages">
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<div>
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<ul id="messages-list">
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<li></li>
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<ul>
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</div>
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</div>
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<div id="chat-input">
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<input type="text" id="input_msgbox" value="" size="70" />
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<input type="button" id="btn_send" value="$str_send" />
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</div>
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<div id="notify">
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</div>
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@ -1,59 +0,0 @@
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<?php // $Id$
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include('../../../config.php');
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include('../lib.php');
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ob_start();
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header('Expires: Sun, 28 Dec 1997 09:32:45 GMT');
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header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
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header('Cache-Control: no-cache, must-revalidate');
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header('Pragma: no-cache');
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header('Content-Type: text/html; charset=utf-8');
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header('X-Powered-By: MOODLE-Chat-V2');
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$chat_sid = required_param('chat_sid', PARAM_ALPHANUM);
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$chat_message = optional_param('chat_message', '', PARAM_RAW);
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$beep_id = optional_param('beep', '', PARAM_RAW);
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if (!$chatuser = $DB->get_record('chat_users', array('sid'=>$chat_sid))) {
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chat_print_error('ERROR', get_string('notlogged','chat'));
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}
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if (!$chat = $DB->get_record('chat', array('id'=>$chatuser->chatid))) {
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chat_print_error('ERROR', get_string('invalidcoursemodule', 'error'));
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}
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if (!$course = $DB->get_record('course', array('id'=>$chat->course))) {
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chat_print_error('ERROR', get_string('invaliduserid', 'error'));
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}
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if (!$cm = get_coursemodule_from_instance('chat', $chat->id, $course->id)) {
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chat_print_error('ERROR', get_string('invalidcoursemodule', 'error'));
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}
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if (isguest()) {
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chat_print_error('ERROR', get_string('notlogged','chat'));
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}
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session_get_instance()->write_close();
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chat_delete_old_users();
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$chat_message = clean_text($chat_message, FORMAT_MOODLE);
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if (!empty($beep_id)) {
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$chat_message = 'beep '.$beep_id;
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}
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if (!empty($chat_message)) {
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$message = new object();
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$message->chatid = $chatuser->chatid;
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$message->userid = $chatuser->userid;
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$message->groupid = $chatuser->groupid;
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$message->message = $chat_message;
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$message->timestamp = time();
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$chatuser->lastmessageping = time() - 2;
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$DB->update_record('chat_users', $chatuser);
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if (!($DB->insert_record('chat_messages', $message) && $DB->insert_record('chat_messages_current', $message))) {
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chat_print_error('ERROR', get_string('cantlogin','chat'));
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} else {
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echo 200;
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}
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add_to_log($course->id, 'chat', 'talk', "view.php?id=$cm->id", $chat->id, $cm->id);
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ob_end_flush();
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}
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@ -1,7 +1,11 @@
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// record msg IDs
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var msgs = [];
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var interval = null;
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var scrollable = true;
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YAHOO.namespace('moodle.chat');
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YAHOO.moodle.chat.api = moodle_cfg.wwwroot+'/mod/chat/chat_ajax.php';
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YAHOO.moodle.chat.interval = null;
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YAHOO.moodle.chat.chat_input_element = null;
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YAHOO.moodle.chat.msgs = [];
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YAHOO.moodle.chat.scrollable = true;
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(function() {
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var Dom = YAHOO.util.Dom, Event = YAHOO.util.Event;
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@ -10,11 +14,11 @@ Event.onDOMReady(function() {
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// build layout
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var layout = new YAHOO.widget.Layout({
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units: [
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{ position: 'top', height: 60, body: 'chat_header', header: chat_cfg.header_title, gutter: '5px', collapse: true, resize: false },
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{ position: 'right', header: chat_lang.userlist, width: 180, resize: true, gutter: '5px', footer: null, collapse: true, scroll: true, body: 'chat_user_list', animate: false },
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{ position: 'bottom', header: chat_lang.inputarea, height: 60, resize: true, body: 'chat_input', gutter: '5px', collapse: false, resize: false },
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{ position: 'top', height: 50, body: 'chat-header', gutter: '5px', resize: false },
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{ position: 'right', width: 180, resize: true, gutter: '5px', scroll: true, body: 'chat-userlist', animate: false },
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{ position: 'bottom', height: 42, resize: false, body: 'chat-input', gutter: '5px', collapse: false, resize: false },
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//{ position: 'left', header: 'Options', width: 200, resize: true, body: 'chat_options', gutter: '5px', collapse: true, close: true, collapseSize: 50, scroll: true, animate: false },
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{ position: 'center', body: 'chat_panel', gutter: '5px', scroll: true }
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{ position: 'center', body: 'chat-messages', gutter: '5px', scroll: true }
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]
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});
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layout.on('render', function() {
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@ -25,37 +29,45 @@ Event.onDOMReady(function() {
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layout.render();
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Event.on('btn_send', 'click', function(ev) {
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Event.stopEvent(ev);
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send_message();
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YAHOO.moodle.chat.send_message();
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});
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Event.on('chat_panel', 'mouseover', function(ev) {
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Event.on('chat-messages', 'mouseover', function(ev) {
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Event.stopEvent(ev);
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scrollable = false;
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YAHOO.moodle.chat.scrollable = false;
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});
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Event.on('chat_panel', 'mouseout', function(ev) {
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Event.on('chat-messages', 'mouseout', function(ev) {
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Event.stopEvent(ev);
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scrollable = true;
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YAHOO.moodle.chat.scrollable = true;
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});
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var key_send = new YAHOO.util.KeyListener(document, { keys:13 }, {fn:send_message, correctScope:true });
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key_send.enable();
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document.getElementById('input_msgbox').focus();
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YAHOO.moodle.chat.chat_input_element = document.getElementById('input_msgbox');
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YAHOO.moodle.chat.chat_input_element.onkeypress = function(ev) {
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var e = (ev)?ev:event;
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if (e.keyCode == 13) {
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YAHOO.moodle.chat.send_message();
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}
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}
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document.title = chat_cfg.chatroom_name;
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this.cb = {
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success: function(o){
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YAHOO.moodle.chat.chat_input_element.focus();
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if(o.responseText){
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var data = YAHOO.lang.JSON.parse(o.responseText);
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} else {
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return;
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}
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if (data.users) {
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update_users(data.users);
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YAHOO.moodle.chat.update_users(data.users);
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}
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}
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}
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var transaction = YAHOO.util.Connect.asyncRequest('POST', "update.php?chat_sid="+chat_cfg.sid+"&chat_init=1", this.cb, null);
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interval = setInterval(function(){
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update_messages();
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var params = {};
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params.action = 'init';
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params.chat_init = 1;
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params.chat_sid = chat_cfg.sid;
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var trans = YAHOO.util.Connect.asyncRequest('POST', YAHOO.moodle.chat.api, this.cb, build_querystring(params));
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YAHOO.moodle.chat.interval = setInterval(function(){
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YAHOO.moodle.chat.update_messages();
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}, chat_cfg.timer);
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});
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})();
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@ -71,129 +83,151 @@ function in_array(f, t){
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return a;
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}
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function talkto(name) {
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YAHOO.moodle.chat.talkto = function(name) {
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var msg = document.getElementById('input_msgbox');
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msg.value = "To "+name+": ";
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msg.focus();
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}
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function send_message() {
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YAHOO.moodle.chat.send_callback = {
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success: function(o) {
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if(o.responseText == 200){
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document.getElementById('btn_send').value = mstr.chat.send;
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document.getElementById('input_msgbox').value = '';
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}
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clearInterval(YAHOO.moodle.chat.interval)
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YAHOO.moodle.chat.update_messages();
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YAHOO.moodle.chat.interval = setInterval(function(){
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YAHOO.moodle.chat.update_messages();
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}, chat_cfg.timer);
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//document.getElementById('input_msgbox').focus();
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}
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}
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YAHOO.moodle.chat.send_message = function(ev) {
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var msg = document.getElementById('input_msgbox').value;
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var el_send = document.getElementById('btn_send');
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if (!msg) {
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alert('Empty message not allowed');
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return;
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}
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var url = 'post.php?chat_sid='+chat_cfg.sid;
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el_send.value = chat_lang.sending;
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var trans = YAHOO.util.Connect.asyncRequest('POST', url, send_cb, "chat_message="+msg);
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}
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function send_beep(id){
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var url = 'post.php?chat_sid='+chat_cfg.sid;
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var trans = YAHOO.util.Connect.asyncRequest('POST', url, send_cb, "beep="+id);
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el_send.value = mstr.chat.sending;
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var params = {};
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params.chat_message=msg;
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params.chat_sid=chat_cfg.sid;
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var trans = YAHOO.util.Connect.asyncRequest('POST', YAHOO.moodle.chat.api+"?action=chat", YAHOO.moodle.chat.send_callback, build_querystring(params));
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}
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var send_cb = {
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success: function(o) {
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if(o.responseText == 200){
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document.getElementById('btn_send').value = chat_lang.send;
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document.getElementById('input_msgbox').value = '';
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}
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clearInterval(interval)
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update_messages();
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interval = setInterval(function(){
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update_messages();
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}, chat_cfg.timer);
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document.getElementById('input_msgbox').focus();
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}
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YAHOO.moodle.chat.send_beep = function(user_id) {
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var url = 'post.php?chat_sid='+chat_cfg.sid;
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var params = {};
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params.chat_sid = chat_cfg.sid;
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params.beep=user_id;
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var trans = YAHOO.util.Connect.asyncRequest('POST', YAHOO.moodle.chat.api+"?action=chat", YAHOO.moodle.chat.send_callback, build_querystring(params));
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}
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function update_users(users) {
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YAHOO.moodle.chat.update_users = function(users) {
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if(!users){
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return;
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}
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var list = document.getElementById('listing');
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var list = document.getElementById('users-list');
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list.innerHTML = '';
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var html = '';
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for(var i in users){
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var el = document.createElement('li');
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html += '<table><tr><td>' + users[i].picture + '</td><td>'
|
||||
html += '<a target="_blank" href="'+users[i].url+'">'+ users[i].name+'<br/>';
|
||||
html += '<a href="###" onclick="talkto(\''+users[i].name+'\')">Talk</a> ';
|
||||
html += '<a href="###" onclick="send_beep('+users[i].id+')">Beep</a>';
|
||||
html += '</td></tr></table>';
|
||||
html += '<table>';
|
||||
html += '<tr>';
|
||||
html += '<td>' + users[i].picture + '</td>';
|
||||
html += '<td>';
|
||||
html += ' <a target="_blank" href="'+users[i].url+'">'+ users[i].name+'<br/>';
|
||||
html += ' <a href="###" onclick="YAHOO.moodle.chat.talkto(\''+users[i].name+'\')">'+mstr.chat.talk+'</a> ';
|
||||
html += ' <a href="###" onclick="YAHOO.moodle.chat.send_beep('+users[i].id+')">'+mstr.chat.beep+'</a>';
|
||||
html += '</td>';
|
||||
html += '</tr>';
|
||||
html += '</table>';
|
||||
el.innerHTML = html;
|
||||
list.appendChild(el);
|
||||
}
|
||||
}
|
||||
function update_messages() {
|
||||
|
||||
YAHOO.moodle.chat.update_messages = function() {
|
||||
if(!chat_cfg.req_count){
|
||||
chat_cfg.req_count = 1;
|
||||
} else {
|
||||
chat_cfg.req_count++;
|
||||
}
|
||||
console.info('Update count: '+chat_cfg.req_count);
|
||||
var url = "update.php?chat_sid="+chat_cfg.sid+"&chat_lasttime="+chat_cfg.chat_lasttime;
|
||||
var params = {};
|
||||
if(chat_cfg.chat_lastrow != null){
|
||||
url += "&chat_lastrow="+chat_cfg.chat_lastrow;
|
||||
params.chat_lastrow = chat_cfg.chat_lastrow;
|
||||
}
|
||||
var trans = YAHOO.util.Connect.asyncRequest('POST', url, update_cb, null);
|
||||
params.chat_lasttime = chat_cfg.chat_lasttime;
|
||||
params.chat_sid = chat_cfg.sid;
|
||||
var trans = YAHOO.util.Connect.asyncRequest('POST', YAHOO.moodle.chat.api+"?action=update", YAHOO.moodle.chat.update_cb, build_querystring(params));
|
||||
}
|
||||
function append_msg(msg) {
|
||||
var list = document.getElementById('messageslist');
|
||||
|
||||
YAHOO.moodle.chat.mymsg_cfg = {
|
||||
color: { to: '#06e' },
|
||||
backgroundColor: { to: '#e06' }
|
||||
};
|
||||
YAHOO.moodle.chat.oddmsg_cfg = {
|
||||
color: { to: 'red' },
|
||||
backgroundColor: { to: '#FFFFCC' }
|
||||
};
|
||||
YAHOO.moodle.chat.evenmsg_cfg = {
|
||||
color: { to: 'blue' }
|
||||
};
|
||||
|
||||
YAHOO.moodle.chat.append_msg = function(key, msg, row) {
|
||||
var list = document.getElementById('messages-list');
|
||||
var item = document.createElement('li');
|
||||
console.info('New message:'+msg.msg);
|
||||
item.id="mdl-chat-entry-"+key;
|
||||
if (msg.mymessage) {
|
||||
item.className = 'mdl-chat-my-entry';
|
||||
} else {
|
||||
item.className = 'mdl-chat-entry';
|
||||
}
|
||||
item.innerHTML = msg.msg;
|
||||
if(msg.type && msg.type == 'beep'){
|
||||
document.getElementById('notify').innerHTML = '<embed src="../beep.wav" autostart="true" hidden="true" name="beep" />';
|
||||
}
|
||||
list.appendChild(item);
|
||||
}
|
||||
var update_cb = {
|
||||
success: function(o){
|
||||
try {
|
||||
if(o.responseText){
|
||||
var data = YAHOO.lang.JSON.parse(o.responseText);
|
||||
} else {
|
||||
return;
|
||||
}
|
||||
} catch(e) {
|
||||
alert('json invalid');
|
||||
alert(o.responseText);
|
||||
return;
|
||||
if (!row) {
|
||||
var anim = new YAHOO.util.ColorAnim(item.id, YAHOO.moodle.chat.oddmsg_cfg);
|
||||
anim.animate();
|
||||
}
|
||||
if(data.error) {
|
||||
if(data.error.level == 'ERROR'){
|
||||
clearInterval(interval);
|
||||
window.location = chat_cfg.home;
|
||||
}
|
||||
if (msg.mymessage) {
|
||||
//var anim = new YAHOO.util.ColorAnim(item.id, YAHOO.moodle.chat.mymsg_cfg);
|
||||
//anim.animate();
|
||||
}
|
||||
if(!data)
|
||||
return false;
|
||||
chat_cfg.chat_lasttime = data['lasttime'];
|
||||
chat_cfg.chat_lastrow = data['lastrow'];
|
||||
// update messages
|
||||
for (key in data['msgs']){
|
||||
if(!in_array(key, msgs)){
|
||||
msgs.push(key);
|
||||
append_msg(data['msgs'][key]);
|
||||
}
|
||||
}
|
||||
// update users
|
||||
update_users(data['users']);
|
||||
// scroll to the bottom of the message list
|
||||
if(scrollable){
|
||||
document.getElementById('chat_panel').parentNode.scrollTop+=500;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// debug code
|
||||
if(!console){
|
||||
var console = {
|
||||
info: function(){
|
||||
},
|
||||
log: function(){
|
||||
YAHOO.moodle.chat.update_cb = {
|
||||
success: function(o){
|
||||
var data = json_decode(o.responseText);
|
||||
if (!data) {
|
||||
return;
|
||||
}
|
||||
if(data.error) {
|
||||
if(data.error.level == 'ERROR'){
|
||||
clearInterval(YAHOO.moodle.chat.interval);
|
||||
window.location = chat_cfg.home;
|
||||
}
|
||||
}
|
||||
chat_cfg.chat_lasttime = data['lasttime'];
|
||||
chat_cfg.chat_lastrow = data['lastrow'];
|
||||
// update messages
|
||||
for (key in data['msgs']){
|
||||
if(!in_array(key, YAHOO.moodle.chat.msgs)){
|
||||
YAHOO.moodle.chat.msgs.push(key);
|
||||
YAHOO.moodle.chat.append_msg(key, data['msgs'][key], data.lastrow);
|
||||
}
|
||||
}
|
||||
// update users
|
||||
YAHOO.moodle.chat.update_users(data['users']);
|
||||
// scroll to the bottom of the message list
|
||||
if(YAHOO.moodle.chat.scrollable){
|
||||
document.getElementById('chat-messages').parentNode.scrollTop+=500;
|
||||
}
|
||||
YAHOO.moodle.chat.chat_input_element.focus();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,157 +0,0 @@
|
|||
<?php
|
||||
/**
|
||||
* Produce update data (json format)
|
||||
* @version $Id$
|
||||
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
|
||||
*/
|
||||
|
||||
define('NO_MOODLE_COOKIES', true); // session not used here
|
||||
|
||||
require_once(dirname(dirname(dirname(dirname(__FILE__)))) . '/config.php');
|
||||
require_once(dirname(dirname(__FILE__)) . '/lib.php');
|
||||
require_once(dirname(__FILE__) . '/common.php');
|
||||
|
||||
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');
|
||||
|
||||
|
||||
$time_start = microtime_float();
|
||||
|
||||
$chat_sid = required_param('chat_sid', PARAM_ALPHANUM);
|
||||
$chat_init = optional_param('chat_init', 0, PARAM_INT);
|
||||
$chat_lasttime = optional_param('chat_lasttime', 0, PARAM_INT);
|
||||
$chat_lastrow = optional_param('chat_lastrow', 1, PARAM_INT);
|
||||
|
||||
$response = array();
|
||||
|
||||
if (!$chatuser = $DB->get_record('chat_users', array('sid'=>$chat_sid))) {
|
||||
chat_print_error('ERROR', get_string('notlogged','chat'));
|
||||
}
|
||||
|
||||
//Get the minimal course
|
||||
if (!$course = $DB->get_record('course', array('id'=>$chatuser->course), 'id,theme,lang')) {
|
||||
chat_print_error('ERROR', get_string('invalidcourseid', 'error'));
|
||||
}
|
||||
|
||||
//Get the user theme and enough info to be used in chat_format_message() which passes it along to
|
||||
if (!$USER = $DB->get_record('user', array('id'=>$chatuser->userid))) {
|
||||
// no optimisation here, it would break again in future!
|
||||
chat_print_error('ERROR', get_string('invaliduserid', 'error'));
|
||||
}
|
||||
|
||||
if (!$chat = $DB->get_record('chat', array('id'=>$chatuser->chatid))) {
|
||||
chat_print_error('ERROR', get_string('invalidcoursemodule', 'error'));
|
||||
}
|
||||
|
||||
if (!$cm = get_coursemodule_from_instance('chat', $chatuser->chatid, $course->id)) {
|
||||
chat_print_error('ERROR', get_string('invalidcoursemodule', 'error'));
|
||||
}
|
||||
// setup $PAGE so that format_text will work properly
|
||||
$PAGE->set_cm($cm, $course, $chat);
|
||||
|
||||
if($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);
|
||||
}
|
||||
|
||||
$users = format_user_list($users, $course);
|
||||
|
||||
if(!empty($chat_init)) {
|
||||
$response['users'] = $users;
|
||||
echo json_encode($response);
|
||||
exit;
|
||||
}
|
||||
|
||||
// force deleting of timed out users if there is a silence in room or just entering
|
||||
if ((time() - $chat_lasttime) > $CFG->chat_old_ping) {
|
||||
// must be done before chat_get_latest_message!!!
|
||||
chat_delete_old_users();
|
||||
}
|
||||
|
||||
if ($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';
|
||||
$users = format_user_list(
|
||||
chat_get_users($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->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;
|
||||
}
|
||||
|
||||
$time_end = microtime_float();
|
||||
$time = $time_end - $time_start;
|
||||
if(!empty($CFG->chat_ajax_debug)) {
|
||||
$response['time'] = $time;
|
||||
}
|
||||
|
||||
echo json_encode($response);
|
||||
|
||||
header('Content-Length: ' . ob_get_length() );
|
||||
|
||||
ob_end_flush();
|
||||
exit;
|
||||
Loading…
Add table
Add a link
Reference in a new issue