// ==UserScript==
// @name           Infinite scroll for YouTube
// @name:ja        YouTubeで無限スクロール
// @namespace      https://twitter.com/sititou70
// @description    Implementation infinite scroll at youtube.com's search r###lt page.
// @description:ja YouTube.comの検索結果で無限スクロールを実現します。
// @include        /https*:\/\/www\.youtube\.com\/.*/
// @require        http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js
// @version        1.1
// @grant          none
// ==/UserScript==
jQuery.noConflict();
(function($){
//exclude iframe document
if ($("html").attr("lang") === "")return;
//get scroll value
var get_scroll_value = function(){
return $(window).scrollTop();
};
//get and set next page
var get_next_page = function(){
if(now_loading)return;
if(next_page_url == "last_page" || next_page_url == "undefined")return;
now_loading = true;
$(r###lt_list_selector).append("<div style='text-align: center;' id='infinite_scroll_for_youyube_loading_massage'>loading next page...</div>");
$.ajax({
type: "GET",
url: next_page_url,
dataType: "html",
}).done(function(res){
now_loading = false;
$(r###lt_list_selector).append($(res).find(r###lt_list_selector + " > li"));
$("#infinite_scroll_for_youyube_loading_massage").remove();
next_page_url = get_next_page_url($(res));
if(next_page_url == "last_page"){
$(r###lt_list_selector).append("<div style='text-align: center;' id='infinite_scroll_for_youyube_loading_massage'>loaded last page</div>");
}
}).fail(function(){
console.log("fail ajax");
});
};
//get next page url from page dom jquery object
var get_next_page_url = function(dom){
var url = dom.find(".branded-page-box > a").last().attr("href");
if(typeof url == "undefined")return "undefined";
if(url == next_page_url)return "last_page";
return url;
};
//it is called when the scrolls
$(window).scroll(function(){
if(next_page_url == "undefined")next_page_url = get_next_page_url($("html"));
if($(".branded-page-box").offset().top - $(window).height() < get_scroll_value() + adjust_scroll_px){
get_next_page();
}
});
var now_loading = false;
var next_page_url = get_next_page_url($("html"));
var r###lt_list_selector = "#r###lts > ol > li:nth-child(2) > ol";
var adjust_scroll_px = 300;
})(jQuery);