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index.html
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index.html
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<!DOCTYPE html>
<html>
<head>
<title>***Timeline***</title>
<style>
html, body {
margin: 0;
width: 100%;
}
body {
background-color: #e6ecf0;
font-family: Arial;
}
#banner {
position: relative;
margin: 0;
width: 100%;
height: 50px;
background-color: white;
border-bottom: 1px solid rgba(0,0,0,0.25);
}
#title {
padding-left: 20px;
position: absolute;
top: 50%;
transform: translateY(-50%);
font-weight: bold;
}
#github {
float: right;
padding-right: 20px;
}
#update {
padding-left: 5px;
position: fixed;
bottom: 0;
background-color: white;
}
#update-checkbox:hover {
cursor: pointer;
}
#timeline {
position: absolute;
left: 50%;
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
top: 60px;
margin: 0 auto;
width: 75%;
}
.post {
overflow-wrap: break-word;
word-wrap: break-word;
word-break: break-word;
max-width: 600px;
min-width: 200px;
padding-top: 10px;
padding-bottom: 10px;
margin: auto;
margin-bottom: 10px;
width: 75%;
background-color: white;
}
.post-author {
margin-left: 10px;
font-weight: bold;
}
.post-date {
font-weight: normal;
}
.post-message {
margin-top: 5px;
margin-left: 10px;
}
.post-image {
border-radius: 5px;
margin-top: 10px;
display: block;
margin-left: auto;
margin-right: auto;
width: 90%;
}
</style>
</head>
<body>
<div id="banner">
<div id="title">***Timeline***</div>
<div id="github"><a href="https://www.github.com/btbd/timeline"><img height="50px" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Ei-sc-github.svg/200px-Ei-sc-github.svg.png"></a></div>
</div>
<div id="timeline"></div>
<div id="update">Auto-update <input id="update-checkbox" type="checkbox" checked></div>
</body>
<script>
var last_id = 0;
(function update() {
var dates = document.getElementsByClassName("post-date");
for (var i = 0; i < dates.length; ++i) {
dates[i].innerHTML = " - " + TimeSince(parseInt(dates[i].id)) + " ago";
}
if (document.getElementById("update-checkbox").checked) {
HttpGet("./timeline?id=" + last_id, function(x) {
if (x.readyState === 4 && x.status === 200) {
var results = JSON.parse(x.responseText);
var scroll = results.length > 0 && GetScroll() > 0 ? GetScrollMax() - GetScroll() : -1;
if (results.length > 0) {
last_id = results[0].id;
for (var i = results.length - 1; i > -1; --i) {
var post = results[i];
post.from = ReplaceTags(post.from);
post.message = ReplaceTags(post.message);
post.image = ReplaceTags(post.image);
var timeline = document.getElementById("timeline");
var div = '<div class="post"><div class="post-author">' + post.from + '<span class="post-date" id="' + post.date + '"> - ' + TimeSince(post.date) + ' ago</span></div><div class="post-message">' + post.message + '</div><img class="post-image" src="' + post.image + '"></div>';
timeline.innerHTML = div + timeline.innerHTML;
}
}
if (scroll != -1) window.scrollTo(0, GetScrollMax() - scroll);
}
});
}
setTimeout(update, 2500);
})();
function GetScroll() {
return (window.pageYOffset || document.documentElement.scrollTop) - (document.documentElement.clientTop || 0);
}
function GetScrollMax() {
return window.scrollMaxY || (document.documentElement.scrollHeight - document.documentElement.clientHeight);
}
function HttpGet(url, state) {
var x = new XMLHttpRequest();
x.onreadystatechange = function() {
state(x);
};
x.open("GET", url, true);
x.send(null);
}
function TimeSince(date) {
var s = Math.floor(((new Date().getTime() / 1000) - date));
var i;
if ((i = Math.floor(s / 31536000)) >= 1) {
return i + " years";
}
if ((i = Math.floor(s / 2592000)) >= 1) {
return i + " months";
}
if ((i = Math.floor(s / 86400)) >= 1) {
return i + " days";
}
if ((i = Math.floor(s / 3600)) >= 1) {
return i + " hours";
}
if ((i = Math.floor(s / 60)) >= 1) {
return i + " minutes";
}
return s + " seconds";
}
function ReplaceTags(s) {
return s.replaceAll("&", "&").replaceAll("<", "<").replaceAll(">", ">");
}
String.prototype.replaceAll = function(search, replacement) {
var target = this;
return target.replace(new RegExp(search, 'g'), replacement);
};
</script>
</html>