Makes xenForo forum pages infinitely long instead of a limited number of posts per page by loading more when you scroll to near the bottom of the page.
// ==UserScript==
// @name xenForo - Endless Forum Pages
// @namespace http://openuserjs.org/users/ardiman
// @description Makes xenForo forum pages infinitely long instead of a limited number of posts per page by loading more when you scroll to near the bottom of the page.
// @description:de-DE Lädt in xenForo-Threads die folgenden Beiträge nach, sobald man bei einem mehrseitigen Thread ans Ende der Seite scrollt.
// @grant none
// @homepage https://github.com/ardiman/userscripts/tree/master/xenforoendlessforumpages
// @icon https://raw.githubusercontent.com/ardiman/userscripts/master/scriptlogo.gif
// @include http://xenforo.com/community/threads/*
// @include http://www.xendach.de/threads/*
// @license CC-BY-NC-SA-3.0; https://creativecommons.org/licenses/by-nc-sa/3.0/legalcode
// @license MIT; https://opensource.org/licenses/MIT
// @supportURL https://github.com/ardiman/userscripts/issues
// @version 1.0.5
// @date 2017-11-19
// ==/UserScript==
var nextURL = null; // the URL for next, or null for pending/none
var nextLinkNode = null; // the node of the "Next" link
var mainTable = null;
window.addEventListener("load", init, false);
// Check the scroll position on a timer because we can't use onscroll (bug 189308).
// If we do switch to onscroll, remember to call testScrollPosition after changing the page.
setInterval(testScrollPosition, 100);
function init()
{
mainTable = findMainTable(document);
nextLinkNode = findNextLink(document);
setNextURL(document);
}
function testScrollPosition()
{
if ((nextURL != null) && ((document.documentElement.offsetHeight - document.documentElement.scrollTop) < (2.5 * window.innerHeight))) {
// We're near the bottom of the page; one press of pgdn could get close to the bottom of the page.
// (At about 1.9 * window.innerHeight, one press of pgdn would actually hit the bottom of the page.)
pullMore();
}
}
function pullMore()
{
var iframe = document.createElement("iframe");
iframe.addEventListener("load", whee, false);
iframe.width = 1;
iframe.height = 1;
iframe.style.visibility = "hidden";
iframe.src = nextURL;
document.body.appendChild(iframe);
// Don't pull this more than once.
nextURL = null;
function whee() {
var iframeDoc = iframe.contentDocument;
// Update nextURL for when we reach the bottom of the page again.
setNextURL(iframeDoc);
// Update the "Next" link in the page to make it a little less confusing.
// Commented out because updating the "Next" link at the top of the page but not the one at
// the bottom of the page is no good.
// nextLinkNode.href = nextURL || "javascript:alert('No more!')";
// Move posts into the main page's table.
siphon(findMainTable(iframeDoc), mainTable);
// Get rid of the iframe to free memory once it's GCed and so on.
// Use a setTimeout to work around bug 305471 and to spread out the CPU usage to keep Firefox responsive.
setTimeout( function() { iframe.parentNode.removeChild(iframe); }, 1500);
}
}
function findMainTable(doc)
{
div=doc.getElementById("messageList");
return div;
}
function findNextLink(doc)
{
for (var link,i=0; link=doc.links[i]; ++i)
if ((link.innerHTML.indexOf(" >") != -1 || link.text.indexOf(" >") != -1) && link.getAttribute("href").indexOf("page-") != -1) {
return link;
}
return null;
}
function setNextURL(doc)
{
var nextLink = findNextLink(doc)
if (nextLink)
nextURL = nextLink.href;
}
function siphon(sourceTable, destTable)
{
var child;
while ((child = sourceTable.childNodes[0]))
destTable.appendChild(child);
}