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else/Javascript/reddit_live_new.html

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else
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<!DOCTYPE html>
<html>
<head>
<title>/new</title>
</head>
<body>
<div id="control_panel">
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<input type="text" id="subreddit_field" placeholder="/r/learnpython">
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<button id="start_button" onclick="start()">Start</button>
<a id="browser_link"></a>
<button id="clear_button" onclick="clear_workspace()">Clear workspace</button>
</div>
<div id="workspace">
</div>
</body>
</html>
<style>
html
{
background-color: #1b1c18;
}
body
{
background-color: #272822;
margin-left: 10%;
margin-right: 10%;
padding: 5px;
}
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else
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#control_panel
{
background-color: #284142;
padding: 5px;
}
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a
{
color: #ddd;
text-decoration: none;
font-family: sans-serif;
}
a:hover
{
text-decoration: underline;
}
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.delete_button
{
position: absolute;
top: 0px;
right: 0px;
height: 100%;
width: 5%;
border: 0px;
background-color: #b53030;
}
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.submission
{
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position: relative;
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padding: 10px;
padding-top: 20px;
padding-bottom: 20px;
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padding-right: 6%; /*for the delete button*/
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margin: 10px;
margin-top: 20px;
margin-bottom: 20px;
box-shadow: 5px 5px 10px 0px rgba(0,0,0,0.5);
background-color: #284142;
}
</style>
<script type="text/javascript">
/*
Thanks Joe Marini for the tab focus code
http://www.html5rocks.com/en/tutorials/pagevisibility/intro/
*/
var CHECK_DELAY = 30 * 1000;
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var CONTROL_PANEL = document.getElementById("control_panel");
CONTROL_PANEL.default_color = CONTROL_PANEL.style.backgroundColor;
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var WORKSPACE = document.getElementById("workspace");
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var id_cache = [];
var id_cache_size = 20;
var first_loop = true;
var unread_notification_count = 0;
var subreddit = "";
var check_timer = null;
var page_focused_cached;
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var HTTPClient = function()
{
/* Thanks ttgagne http://stackoverflow.com/a/22076667 */
var asynchronous = true;
this.get = function(url, callback)
{
var request = new XMLHttpRequest();
request.onreadystatechange = function()
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{
// console.log(request.readyState);
// console.log(request.status);
if (request.readyState == 4)
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{
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if (request.status == 200)
{
CONTROL_PANEL.style.backgroundColor = CONTROL_PANEL.default_color;
callback(request.responseText);
}
else
{
CONTROL_PANEL.style.backgroundColor = "#f00";
}
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}
}
request.open("GET", url, asynchronous);
//request.withCredentials = true;
request.send(null);
}
}
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function apply_to_page(response_json)
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{
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var j = JSON.parse(response_json);
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var submissions = j["data"]["children"];
submissions.reverse(); // newest last
var new_items = 0;
for (var index = 0; index < submissions.length; index += 1)
{
var submission = submissions[index]["data"];
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if (id_cache.includes(submission["id"]))
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{
continue;
}
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id_cache.push(submission["id"]);
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if (first_loop)
{
continue;
}
new_items += 1;
var div = document.createElement("div");
div.className = "submission";
var anchor = document.createElement("a");
anchor.innerHTML = "/r/" + submission["subreddit"] + " - " + submission["title"];
anchor.href = "https://reddit.com/r/" + submission["subreddit"] + "/comments/" + submission["id"];
anchor.target = "_blank";
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var delete_button = document.createElement("button")
delete_button.className = "delete_button";
delete_button.div = div;
delete_button.innerHTML = "X";
delete_button.onclick = function()
{
this.div.parentElement.removeChild(this.div);
}
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var timestamp = document.createElement("span");
var submission_time = new Date(submission["created_utc"])
timestamp.innerHTML = "" + submission_time.getHours() + ":" + submission_time.getMinutes();
div.appendChild(anchor);
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div.appendChild(delete_button);
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//WORKSPACE.insertBefore(div, WORKSPACE.firstChild);
WORKSPACE.appendChild(div);
}
console.log("+" + new_items);
if (new_items > 0 && !page_focused_cached)
{
unread_notification_count += new_items;
update_title();
}
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while (id_cache.length < id_cache_size)
{
id_cache.shift();
}
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first_loop = false;
}
function check_forever()
{
clearTimeout(check_timer);
check_once();
check_timer = setTimeout(check_forever, CHECK_DELAY);
}
function check_once()
{
console.log("checking");
if (subreddit == "")
{
console.log("no subreddit");
return;
}
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var url = "https://api.reddit.com" + subreddit + "/new.json";
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session.get(url, apply_to_page);
}
function clear_workspace()
{
while (WORKSPACE.children.length > 0)
{
WORKSPACE.removeChild(WORKSPACE.firstChild);
}
}
function on_focus_change()
{
if (page_focused_fresh())
{
unread_notification_count = 0;
update_title();
}
}
function page_focused_fresh()
{
var property = visibility_property();
if (!property)
{
page_focused_cached = true;
return true;
}
else
{
page_focused_cached = !document[property];
}
return page_focused_cached;
}
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function sort_submission_comparator(submission_1, submission_2)
{
created_1 = submission_1["created_utc"];
created_2 = submission_2["created_utc"];
if (created_1 < created_2)
{return -1;}
if (created_1 > created_2)
{return 1;}
return 0;
}
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function start()
{
console.log("start");
first_loop = true;
clear_workspace();
var field = document.getElementById("subreddit_field");
var text = field.value;
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text = text.replace("/u/", "/user/");
if (text.indexOf("/") == -1)
{
text = "/r/" + text;
}
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subreddit = text;
var link = document.getElementById("browser_link");
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var url = "https://reddit.com" + subreddit + "/new";
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link.href = url;
link.innerHTML = url;
update_title();
check_forever();
}
function update_title()
{
var title = subreddit + "/new";
if (unread_notification_count > 0)
{
title = "(" + unread_notification_count + ") " + title;
}
document.title = title;
}
function visibility_property()
{
var prefixes = ["webkit","moz","ms","o"];
if ("hidden" in document)
{
return "hidden";
}
for (var i = 0; i < prefixes.length; i++)
{
hidden_attribute = prefixes[i] + "Hidden";
if ((hidden_attribute) in document)
return hidden_attribute;
}
return null;
}
page_focused_fresh();
var my_visibility_property = visibility_property();
if (my_visibility_property)
{
var my_event_name = my_visibility_property.replace(/[H|h]idden/,'') + 'visibilitychange';
document.addEventListener(my_event_name, on_focus_change);
}
var session = new HTTPClient();
</script>
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