慕课网视频自动播放下一节，可手动开启/关闭，按回车键可全屏播放
// ==UserScript==
// @name 慕课网视频自动播放下一节
// @name:zh-CN 慕课网视频自动播放下一节
// @name:en Imooc video, auto play next section
// @namespace http://bbs.91wc.net/imooc-auto-next.htm
// @version 0.1.10
// @description 慕课网视频自动播放下一节，可手动开启/关闭，按回车键可全屏播放
// @description:zh-CN 慕课网视频自动播放下一节，可手动开启/关闭，按回车键可全屏播放
// @description:en Imooc video, auto play next section, which can be manually turned on/off, press enter to play full screen
// @author Wilson
// @icon https://www.imooc.com/favicon.ico
// @match *://www.imooc.com/video/*
// @license GPL License
// ==/UserScript==
(function() {
'use strict';
//等待jQuery加载完成和dom加载完成
var waitUntil=function(condfunc, callback, interval, trys){
var getGuid = getGuid||function() {
var d = new Date().getTime();
var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = (d + Math.random()*16)%16 | 0;
d = Math.floor(d/16);
return (c=='x' ? r : (r&0x3|0x8)).toString(16);
});
return uuid;
};
var timer = {}, counter={};
var waiter = function(condfunc, callback, interval, trys, guid){
guid = guid || getGuid();
interval = interval || 100;
trys = trys || 300;
counter[guid] = counter[guid] ? counter[guid]++ : 1;
if(counter[guid]>trys){
if(timer[guid]) clearTimeout(timer[guid]);
//callback('fail');
return;
}
timer[guid] = setTimeout(function(){
if(condfunc()){
if(timer[guid]) clearTimeout(timer[guid]);
callback('ok');
} else {
if(timer[guid]) clearTimeout(timer[guid]);
waiter(condfunc, callback, interval, trys, guid);
}
}, interval);
}
waiter(condfunc, callback, interval, trys);
}
//监控下一节
var intvelTimer=null, listenNextBtn = function(delay){
delay = delay || 1000;
intvelTimer=setInterval(function(){
//当出现下一节时，开始播放下一节
if($(".vjs-ended").length > 0 && localStorage.getItem("_w_auto_next")){
$(".J-next-btn").click();
}
//当到达最后一节时，停止监控
if($(".return-course").length > 0 && localStorage.getItem("_w_auto_next")){
if(isListeningNextBtn()) stopListenNextBtn();
}
}, delay);
}
//停止监控下一节
var stopListenNextBtn = function(){
if(intvelTimer) clearInterval(intvelTimer);
intvelTimer = null;
}
//是否正在监控下一节
var isListeningNextBtn = function(){
return intvelTimer !== null;
}
waitUntil(function(){return typeof jQuery !=="undefined" && $(".vjs-remaining-time").length>0}, function(){
//插入选项
var autoNextHtml='<div class="video-js vjs-time-control"><label><input id="_w_auto_next_btn" type="checkbox" style="position:relative;top:2px"> 自动播放下一节</label></div>';
$(".vjs-remaining-time").after(autoNextHtml);
$("#_w_auto_next_btn").prop("checked", localStorage.getItem("_w_auto_next")?true:false);
//进度条显示出来，方便快进
$(".vjs-progress-holder").css("background-color", "#393e42");
//监控下一节
listenNextBtn();
//选项改变事件
$("#_w_auto_next_btn").on("change", function(){
var me = $(this);
if(me.is(":checked")){
if(!isListeningNextBtn()) listenNextBtn();
localStorage.setItem("_w_auto_next", 1);
} else {
if(isListeningNextBtn()) stopListenNextBtn();
localStorage.setItem("_w_auto_next", "");
}
});
//回车全屏事件
$(document).keyup(function(){
if(event.keyCode==13){
$(".vjs-fullscreen-control").click();
}
});
});
})();