Infinite scroll @ javbus.com
目前为
// ==UserScript==
// @name javbus.waterfall
// @description Infinite scroll @ javbus.com
// @namespace https://github.com/FlandreDaisuki
// @include *://*.javbus.*/*
// @version 2017.11.02
// @grant none
// ==/UserScript==
const $ = jQuery;
class Lock {
constructor(d = false) {
this.locked = d;
}
lock() {
this.locked = true;
}
unlock() {
this.locked = false;
}
}
class Waterfall {
constructor(selectorcfg = {}) {
this.lock = new Lock();
this.baseURI = this.getBaseURI();
this.selector = {
next: 'a.next',
item: '',
cont: '', //container
pagi: '.pagination',
};
Object.assign(this.selector, selectorcfg);
this.pagegen = this.fetchSync(location.href);
this.anchor = $(this.selector.pagi)[0];
this._count = 0;
this._1func = function(cont, elems) {
cont.empty().append(elems);
};
this._2func = function(cont, elems) {
cont.append(elems);
};
if ($(this.selector.item).length) {
document.addEventListener('scroll', this.scroll.bind(this));
document.addEventListener('wheel', this.wheel.bind(this));
this.appendElems(this._1func);
}
}
getBaseURI() {
let _ = location;
return `${_.protocol}//${_.hostname}${_.port && `:${_.port}`}`;
}
getNextURL(href) {
let a = document.createElement('a');
a.href = href;
return `${this.baseURI}${a.pathname}${a.search}`;
}
fetchURL(url) {
console.log(`fetchUrl = ${url}`);
const fetchwithcookie = fetch(url, { credentials: 'same-origin' });
return fetchwithcookie
.then(response => response.text())
.then(html => new DOMParser().parseFromString(html, 'text/html'))
.then(doc => {
let $doc = $(doc);
let href = $doc.find(this.selector.next).attr('href');
let nextURL = href ? this.getNextURL(href) : undefined;
let elems = $doc.find(this.selector.item);
return {
nextURL,
elems,
};
});
}
*fetchSync(urli) {
let url = urli;
do {
yield new Promise((resolve, reject) => {
if (this.lock.locked) {
reject();
} else {
this.lock.lock();
resolve();
}
})
.then(() => {
return this.fetchURL(url).then(info => {
url = info.nextURL;
return info.elems;
});
})
.then(elems => {
this.lock.unlock();
return elems;
})
.catch(err => {
// Locked!
});
} while (url);
}
appendElems() {
let nextpage = this.pagegen.next();
if (!nextpage.done) {
nextpage.value.then(elems => {
const cb = this._count === 0 ? this._1func : this._2func;
cb($(this.selector.cont), elems);
this._count += 1;
});
}
return nextpage.done;
}
end() {
console.info('The End');
document.removeEventListener('scroll', this.scroll.bind(this));
document.removeEventListener('wheel', this.wheel.bind(this));
$(this.anchor).replaceWith($(`<h1>The End</h1>`));
}
static reachBottom(elem, limit) {
return elem.getBoundingClientRect().top - $(window).height() < limit;
}
scroll() {
if (
Waterfall.reachBottom(this.anchor, 500) &&
this.appendElems(this._2func)
) {
this.end();
}
}
wheel() {
if (
Waterfall.reachBottom(this.anchor, 1000) &&
this.appendElems(this._2func)
) {
this.end();
}
}
setFirstCallback(f) {
this._1func = f;
}
setSecondCallback(f) {
this._2func = f;
}
}
const w = new Waterfall({
next: 'a#next',
item: '.item',
cont: '#waterfall',
});
w.setSecondCallback(function(cont, elems) {
if (location.pathname.includes('/star/')) {
cont.append(elems.slice(1));
} else {
cont.append(elems);
}
});
function addStyle(styleStr) {
$('head').append(`<style>${styleStr}</style>`);
}
addStyle(`
#waterfall {
height: initial !important;
width: initial !important;
display: flex;
flex-direction: row;
flex-wrap: wrap;
}
#waterfall .item.item {
position: relative !important;
top: initial !important;
left: initial !important;
float: none;
flex: 25%;
}
#waterfall .movie-box,
#waterfall .avatar-box {
width: initial !important;
display: flex;
}
#waterfall .movie-box .photo-frame {
overflow: visible;
}`);