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presence channel with online users consultation and your information #6

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21 changes: 21 additions & 0 deletions css/app.css
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Original file line number Diff line number Diff line change
Expand Up @@ -34,4 +34,25 @@ body {
position: relative;
top: -150px;
font-size: 24px;
}

.members_block {
position: relative;
float: right;
width: 16%;
border: 2px double #ddd;
margin: 10px;
}
.members_block h1{
float: right;
text-shadow: 1px 1px 10px #3F51B5;
color: white;
margin-right: 10%;
}
.members_block ul {
padding: 0px 20px 0px 20px;
}
.members_block ul li{
list-style-type: none;
border-bottom: 1px solid #ddd;
}
8 changes: 7 additions & 1 deletion index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -6,14 +6,20 @@
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Collaborative Text Editor</title>
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<link href="/css/app.css" rel="stylesheet"></link>
<link href="/css/app.css" rel="stylesheet">
</head>
<body>
<header class="header">
<h1 class="header__h1">Online Collab Edit</h1>

</header>
<div class="doc">
<div class="doc__background-ribbon"></div>
<div class="members_block">
<ul id="members"></ul>
<h1 id="usersOnline"></h1>
</div>

<div id="doc" class="doc__text-editor"></div>
</div>
<script src="https://js.pusher.com/4.0/pusher.min.js"></script>
Expand Down
54 changes: 51 additions & 3 deletions js/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,9 +15,21 @@
return;
}

//change the codeForTest variable in an actual application, since each user must have a unique code.
var codeForTest = Math.random().toString().substring(2);
var userName = "user-" + codeForTest;

return new Promise(function (resolve, reject) {
// subscribe to the changes via Pusher
var pusher = new Pusher(<INSERT_PUSHER_APP_KEY_HERE>);
var pusher = new Pusher('INSERT_PUSHER_APP_KEY_HERE', {
cluster: 'INSERT_YOUR_CLUSTER_HERE',
forceTLS: true,
auth: {
params: {
user: userName
}
}
});
var channel = pusher.subscribe(id);
channel.bind('client-text-edit', function(html) {
// save the current position
Expand All @@ -26,9 +38,27 @@
// set the previous cursor position
setCaretPosition(doc, currentCursorPosition);
});
channel.bind('pusher:subscription_succeeded', function() {
channel.bind('pusher:subscription_succeeded', function(members) {

updateMembersCount(members.count);

members.each(function(member) {
addMember(member);
});

resolve(channel);
})

channel.bind('pusher:member_added', function(member) {
addMember(member);
updateMembersCount(channel.members.count);
});
channel.bind('pusher:member_removed', function(member) {
removeMember(member);
updateMembersCount(channel.members.count);
});


}).then(function (channel) {
function triggerChange (e) {
channel.trigger('client-text-edit', e.target.innerHTML);
Expand All @@ -39,7 +69,7 @@

// a unique random key generator
function getUniqueId () {
return 'private-' + Math.random().toString(36).substr(2, 9);
return 'presence-' + Math.random().toString(36).substr(2, 9);
}

// function to get a query param's value
Expand Down Expand Up @@ -99,4 +129,22 @@
}
return pos; // needed because of recursion stuff
}
function addMember(member){
var node = document.createElement("li");
var textnode = document.createTextNode(member.info.name);
node.setAttribute("id",member.id);
node.appendChild(textnode);
document.getElementById('members').appendChild(node);

}

function removeMember (member) {
var node = document.getElementById(member.id);
if (node.parentNode) {
node.parentNode.removeChild(node);
}
}
function updateMembersCount(member) {
document.getElementById('usersOnline').innerHTML = member;
}
})();
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