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可以在豆瓣小组列表页面快速预览帖子内容，无须再打开新窗口
当前为
// ==UserScript==
// @name 豆瓣小组话题快速预览-douban group topic fast preview
// @namespace https://github.com/DragonCat1
// @version 0.5.4
// @license MIT
// @description 可以在豆瓣小组列表页面快速预览帖子内容，无须再打开新窗口
// @author 铛铛铛铛铛/https://www.douban.com/people/48915223
// @copyright 1991-2018,铛铛铛铛铛-Dragoncat
// @match https://www.douban.com/group/*
// @exclude https://www.douban.com/group/*/new_topic
// @exclude https://www.douban.com/group/people/*/
// @exclude https://www.douban.com/group/people/*/joins
// @exclude https://www.douban.com/group/explore*
// @exclude https://www.douban.com/group/search*
// @grant none
// ==/UserScript==
(function () {
'use strict';
const isTopicPage = location.pathname.match(/\/group\/topic/)
const style = document.createElement("style")
style.type = "text/css"
if(!isTopicPage){
style.innerHTML = `
::-webkit-scrollbar {
width: 10px;
height: 10px;
}
::-webkit-scrollbar-thumb {
background: #656565;
box-shadow: inset 0 0 5px rgba(0,0,0,.1);
}
::-webkit-scrollbar-thumb:hover {
background: #323232;
}
::-webkit-scrollbar-track {
background: #ededed;
box-shadow: inset 0 0 5px rgba(0,0,0,.1);
}
a:visited {
color: #666;
}
a:hover {
color: #fff;
}
#wrapper{
margin:0;
width: 100%;
box-sizing: border-box;
}
#group-info .group-desc {
width: auto;
}
table.olt tr:not(.th):hover,table.olt tr:not(.th).active{
cursor: pointer;
background: #ffe2cd;
}
.grid-16-8 .article{
padding-right: 10px;
}
#iframe-wrapper{
width: -webkit-fill-available;
height: -webkit-fill-available;
margin:0 305px 0 686px;
top:0;
}
#priview{
width: -webkit-fill-available;
height: -webkit-fill-available;
background: #fefefe;
border: none;
box-shadow: 0 0 2px #00000038;
}
`
document.head.appendChild(style)
const grid = document.querySelector('.grid-16-8')
const article = document.querySelector('.article')
const iframe = document.createElement("iframe")
const iframeWrapper = document.createElement("div")
const trs = document.querySelectorAll('table.olt tr:not(.th)')
let timer
let prevTr
iframeWrapper.id = "iframe-wrapper"
iframe.srcdoc = '<style>p{color:#bbb;font-style:italic;font-size:12px;}a{color: #0f959d;text-decoration: none;}a:hover{color:red;}</style><p>/*话题快速预览 © <a href="https://www.douban.com/people/48915223/">铛铛铛铛铛</a>*/</p><p>Tips:<br/>因为豆瓣的原因，在预览里发表回应不会刷新页面，但实际是发表成功的</p>'
iframe.id = "priview"
iframe.sandbox="allow-scripts allow-forms allow-same-origin allow-popups"
iframeWrapper.appendChild(iframe)
grid.insertBefore(iframeWrapper, document.querySelector('.extra'))
trs.forEach(tr => {
//tr.onmouseenter = function () {
// changeClass(tr)
// if(timer) clearTimeout(timer)
// timer = setTimeout(()=>{
// loadContent(tr)
// },100)
// }
tr.onclick = function () {
changeClass(tr)
loadContent(tr)
}
})
article.tabIndex=1
article.addEventListener("keydown",e=>{
if([38,40].includes(e.keyCode)){
e.preventDefault()
const curTr = document.querySelector('table.olt tr:not(.th).active') || document.querySelector('table.olt tr:not(.th)')
let nextTr
if(e.keyCode===38){
nextTr = curTr.previousElementSibling || curTr
}
else if(e.keyCode===40){
nextTr = curTr.nextElementSibling || curTr
}
changeClass(nextTr)
loadContent(nextTr)
}
})
window.addEventListener("scroll", function () {
changepos()
})
changepos()
function changeClass(tr){
if (prevTr) prevTr.classList.remove('active')
prevTr = tr
tr.classList.add('active')
}
function loadContent(tr){
iframe.removeAttribute('srcdoc')
iframe.src = tr.querySelector('a').href
}
function changepos() {
if (document.documentElement.scrollTop > document.querySelector(".article").offsetTop) {
iframeWrapper.style.position = "fixed"
}
else {
iframeWrapper.style.position = "relative"
}
}
}
else{
style.innerHTML = `
::-webkit-scrollbar {
width: 10px;
height: 10px;
}
::-webkit-scrollbar-thumb {
background: #656565;
box-shadow: inset 0 0 5px rgba(0,0,0,.1);
}
::-webkit-scrollbar-thumb:hover {
background: #323232;
}
::-webkit-scrollbar-track {
background: #ededed;
box-shadow: inset 0 0 5px rgba(0,0,0,.1);
}
`
document.head.appendChild(style)
}
})();