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index.html
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<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" />
<title>Socket.IO chat</title>
<style>
/** { margin: 0; padding: 0; box-sizing: border-box; }*/
/*body { font: 13px Helvetica, Arial; }*/
form { padding: 10px; position: fixed; bottom: 0; width: 100%; }
/*form input { border-color:black; padding: 10px; width: 90%; margin-right: .5%; }*/
/*form button { width: 9%; background: rgb(130, 224, 255); border-color:black; padding: 10px; }*/
#messages { list-style-type: none; margin-bottom: 100px;overflow:scroll;padding: 0; }
#messages li { padding: 5px 10px; }
/*#messages li:nth-child(odd) { background: #eee; }*/
</style>
</head>
<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" ></script>
<script src="../autogrow.js"></script>
<style>
::-webkit-scrollbar{
-webkit-appearance: none;
width: 4px;
}
::-webkit-scrollbar-thumb {
border-radius: 4px;
background-color: rgba(0,0,0,.5);
-webkit-box-shadow: 0 0 1px rgba(255,255,255,.5);
}
.joined{
text-align: center;
color: #D8D8D8 ;
}
</style>
<script>
var colors = [
'#e21400', '#91580f', '#f8a700', '#f78b00',
'#58dc00', '#287b00', '#a8f07a', '#4ae8c4',
'#3b88eb', '#3824aa', '#a700ff', '#d300e7'
];
// var user = prompt("what is your name?");
var socket;
socket = io();
var countMessages = 0;
// socket.username = user;
// console.log(socket);
var randomColorIndex = Math.floor((Math.random() * 12));
var userColor = colors[randomColorIndex];
// socket.colorUser = userColor;
socket.emit('add user');
socket.emit('display messages');
socket.emit('display notifications');
var pathName = window.location.pathname;
var professor;
var courseName;
pathName = pathName.substring(7); // Just get the class Name and Number. (CMPSC121, CMPSC473)
if(pathName.indexOf("483")!=-1 || pathName.indexOf("431")!=-1 || pathName.indexOf("497")!=-1 || pathName.indexOf("111")!=-1 ){
professor = pathName.substring(9);
courseName = pathName.substring(0,9);
}
else{
professor = pathName.substring(7);
courseName = pathName.substring(0,7);
}
socket.on('populate messages from DB', function (data){
var objDiv = document.getElementById("messages");
//print messages if pertained in that class
for(var i =0; i< data.length;i++)
{
var msg = data[i].message;
var line;
if(data[i].className == pathName){
line = $('<li><em style="color:#A0A0A0">'+data[i].date.substring(4,21) +'</em><strong style="color:'+data[i].color + '"> '+data[i].username + '</strong>: ' + data[i].message +'</li>');
$('#messages').append(line);
}
}
objDiv.scrollTop = objDiv.scrollHeight;
window.scrollTo(0,document.body.scrollHeight);
});
socket.on('display notifications client', function (data){
if (window.webkitNotifications && navigator.userAgent.indexOf("Chrome") > -1 || window.Notification) {
if(data.roomUser == pathName)
var n = new Notification('Your room is active', {'body': 'People are talking in your room','icon':'../notebook1.jpg'});
// console.log(n.icon);
}
});
socket.on('user joined', function (data) {
var userJoined = $('<ul class="joined">' + data.username + ' joined</ul>');
$('#messages').append(userJoined);
document.getElementById("participants").style.visibility="visible";
document.getElementById("participants").innerHTML = "Number of participants: " + data.numUsers;
document.getElementById("courseName").style.visibility="visible";
document.getElementById("courseName").innerHTML = "Welcome to "+ courseName + " with " + professor ;
document.getElementById("informationDiv").style.display = "none";
$( "#informationDiv" ).fadeIn( 1000, function() {
// Animation complete
});
var objDiv = document.getElementById("messages");
objDiv.scrollTop = objDiv.scrollHeight;
});
// HAVE JUST ONE DIV FOR NUMBER PARTICIPANTS AND UPDATE JUST THAT SPECIFIC DIV ON THE TOP-CENTER OF THE PAGE.
socket.on('user left',function(data){
var userLeft = $('<ul class="joined">' + data.username + ' left</ul>');
$('#messages').append(userLeft);
document.getElementById("participants").innerHTML = "Number of participants: " + data.numUsers;
var objDiv = document.getElementById("messages");
objDiv.scrollTop = objDiv.scrollHeight;
});
function submitForm()
{
countMessages = 0;
// console.log(userColor);
var data = { msg: $('#m').val(), colorOfUser:userColor};
if(document.getElementById("m").value != "")
socket.emit('chat message', data);
$('#m').val('');
return false;
}
socket.on('chat message', function(data){
var date = new Date();
var formattedDate =date.toString().substring(4,21);
var msg = data.msg;
var line;
line = $('<li><em style="color:#A0A0A0">'+formattedDate+'</em><strong style="color:'+data.colorOfUser + '"> '+data.username + '</strong>: ' + data.msg +'</li>');
$('#messages').append(line);
// $('#messages').append(line);
var objDiv = document.getElementById("messages");
$(".typingClass"+data.username).remove();
// alert(objDiv.scrollHeight);
objDiv.scrollTop = objDiv.scrollHeight;
});
</script>
<body>
<br>
<div id="informationDiv" style="height:175px;overflow:auto;text-align:center;display:none">
<h2 id="courseName" style="visibility:hidden">Hello</h2>
<h2 id="participants" style="visibility:hidden">Number of participants:</h2>
</div>
<ul style="height:450px;font-size:16px;" id="messages" ></ul>
<form id="formID" action="" onsubmit="return submitForm();">
<div class ="row">
<div id="inputMessage" class = "col-md-11">
<textarea id="m" style="font-size:16px;height:40px" class="form-control" type="submit" onfocus="scrollDown()" placeholder="Type your message"></textarea>
</div>
<div id ="submitButtonDiv" class="col-md-1">
<input id="submitButton" type="submit" class="btn btn-success" value="Send" onclick="keepKeyboard();" />
</div>
</div>
</form>
</body>
<script>
$(document).ready(function () {
$('#messages').click(function () {
document.activeElement.blur();
});
$('#m').autogrow();
});
function scrollDown(){
var objDiv = document.getElementById("messages");
objDiv.scrollTop = objDiv.scrollHeight;
}
function keepKeyboard(){
document.getElementById("m").focus();
}
// Mobile responsiveness with text input
var mq = window.matchMedia('all and (max-width: 700px)');
if(mq.matches) {
document.getElementById("submitButtonDiv").className = "col-xs-12";
document.getElementById("submitButtonDiv").style.paddingTop= "5px";
document.getElementById("messages").style.height = "400px";
document.getElementById("submitButton").style.width = "100%";
}
else {
}
mq.addListener(function(changed) {
if(changed.matches) {
document.getElementById("submitButtonDiv").className = "col-xs-12";
document.getElementById("submitButtonDiv").style.paddingTop= "5px";
document.getElementById("submitButton").style.width = "100%";
}
else
{
document.getElementById("submitButtonDiv").className = "col-md-1";
document.getElementById("submitButtonDiv").style.paddingTop= "0px";
}
});
// var pressedKey = false;
$( "#m" ).keydown(function(e) {
if ((e.keyCode == 10 || e.keyCode == 13)){
e.preventDefault();
submitForm();
return;
}
countMessages++;
if(countMessages ==1)
{
var data = {colorOfUser:userColor};
socket.emit('user typing',data);
}
});
socket.on('user typing server',function(data){
if(socket.username != data.username)// So it does not display it on the same computer.
var typing = $('<li class="typingClass'+data.username+'"><strong style="color:'+data.colorOfUser + '">'+data.username + '</strong> is typing</li>');
$('#messages').append(typing);
var objDiv = document.getElementById("messages");
objDiv.scrollTop = objDiv.scrollHeight;
});
</script>
</html>