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tako774 / Twitter Tweet Auto Refresh

// ==UserScript==
// @name	Twitter Tweet Auto Refresh
// @namespace	tako774.net
// @version	0.1
// @description	Auto refresh tweet if scrolled to top of page and not mouse over
// @match	https://twitter.com/*
// @author nanashi(@tako774)
// @license	MIT
// ==/UserScript==

/*
  when all conditions below OK, do auto refresh
  1) mouse is not on stream
  2) permalink is not shown
  3) scroll on top tweet
*/

var isMouseOnStream = false;
var stream = document.querySelector("#stream-items-id");
var permalink = document.querySelector("#permalink-overlay");

timer();

stream.onmouseenter = function()
{
  // console.log("[Twitter Tweet Auto Open] stream.onmouseenter");
  isMouseOnStream = true;
}

stream.onmouseleave = function()
{
  // console.log("[Twitter Tweet Auto Open] stream.onmouseleave");
  isMouseOnStream = false;
}

window.onscroll = function ()
{
	check();
}

function check()
{
  // console.log("[Twitter Tweet Auto Open] checkPosition");
  var isPermalinkOpen = permalink.style.display == "block";
  // console.log("[Twitter Tweet Auto Open] isMouseOnStream: " + isMouseOnStream);
  // console.log("[Twitter Tweet Auto Open] isPermalinkOpen: " + isPermalinkOpen + " (" + permalink.style.display + ")");
  // console.log("[Twitter Tweet Auto Open] window.pageYOffset: " + window.pageYOffset);
	if (!isMouseOnStream && !isPermalinkOpen && window.pageYOffset <= 140)
	{
		refreshTweet();
	}
}

function refreshTweet()
{
  // console.log("[Twitter Tweet Auto Open] openTweet");
	var newTweetsBar = document.querySelector(".new-tweets-bar");
	if (newTweetsBar) { newTweetsBar.click(); }
}

function timer()
{
	check();
	window.setTimeout(timer, 1000);
}