// ==UserScript==
// @name         超星学习通ppt视频下载
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  按下D下载ppt,pdf,上课视频
// @author       JiuYue
// @match        http://mooc1.chaoxing.com/mycourse/*
// @match        https://mooc1.chaoxing.com/mycourse/*
// @match        http://mooc1.chaoxing.com/*
// @match        https://mooc1.chaoxing.com/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @updateURL
// @installURL
// @downloadURL
// @license      MIT
// ==/UserScript==
(function () {
'use strict';
var i = 0;
function sendRequestAndOpenWindow(url) {
var xhr = new XMLHttpRequest();
xhr.open("GET", url, false);
xhr.send();
var json = JSON.parse(xhr.responseText);
window.open(json.pdf || json.http, '_blank');
i = (i + 1) % document.getElementsByTagName("iframe")[0].contentDocument.body.getElementsByClassName("ans-attach-ct").length;
}
document.onkeydown = function (e) {
var keyNum = window.event ? e.keyCode : e.which;
if (keyNum == 68) {
var iframe = document.getElementsByTagName("iframe")[0];
var attachElement = iframe.contentDocument.body.getElementsByClassName("ans-attach-ct")[i] || document.getElementsByClassName("ans-attach-ct")[i];
var objectid = attachElement.getElementsByTagName('iframe')[0].getAttribute('objectid');
var protocolStr = document.location.protocol;
var url = protocolStr + '//mooc1.chaoxing.com/ananas/status/' + objectid + '?flag=normal';
var FileType = attachElement.getElementsByTagName('iframe')[0].getAttribute('data');
FileType = (FileType && JSON.parse(FileType).type) || '.pdf';
sendRequestAndOpenWindow(url);
}
}
})();