Gelbooru Endless Scroll

Adds endless scroll function to various boorus

Versão de: 08/07/2017. Veja: a última versão.

Você precisará instalar uma extensão como Tampermonkey, Greasemonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Userscripts para instalar este script.

Você precisará instalar uma extensão como o Tampermonkey para instalar este script.

Você precisará instalar um gerenciador de scripts de usuário para instalar este script.

(Eu já tenho um gerenciador de scripts de usuário, me deixe instalá-lo!)

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

(Eu já possuo um gerenciador de estilos de usuário, me deixar fazer a instalação!)

// ==UserScript==
// @id             gelbooru-endless-scroll
// @name           Gelbooru Endless Scroll
// @version        1.6.9
// @namespace      intermission
// @author         intermission
// @description    Adds endless scroll function to various boorus
// @match          *://gelbooru.com/index.php?*
// @match          *://rule34.xxx/index.php?*
// @match          *://e621.net/post/index/*
// @match          *://*.booru.org/index.php?*
// @match          *://rule34.paheal.net/post/list*
// @match          *://yande.re/post*
// @match          *://lolibooru.moe/*
// @match          *://konachan.com/*
// @match          *://atfbooru.ninja/*
// @match          *://safebooru.org/*
// @match          *://hypnohub.net/*
// @match          *://tbib.org/*
// @run-at         document-end
// @grant          none
// ==/UserScript==

/* This program is free software. It comes without any warranty, to
 * the extent permitted by applicable law. You can redistribute it
 * and/or modify it under the terms of the Do What The Fuck You Want
 * To Public License, Version 2, as published by Sam Hocevar. See
 * http://www.wtfpl.net/ for more details. */

(function(){
  "use strict";
  var d = document, url, host = location.hostname.match(/[^\.]+\.[^\.]+$/)[0],
  v = ".thumb",
  vis = function() {
    var rect = target().getBoundingClientRect();
    return rect.x === 0 && rect.y === 0 ? false :
      rect.top + rect.height >= 0 &&
      document.documentElement.clientHeight - rect.bottom + rect.height >= 0;
  }, total, myImuoto = ~["yande.re", "lolibooru.moe", "konachan.com", "hypnohub.net"].indexOf(host),
  page = function(doc) {
    try {
      var images, pageNo = d.createElement("paheal.net" === host ? "div" : "span"), frag = d.createDocumentFragment(), container,
      fn = (e) => {
        (e = e.target.parentNode.parentNode).style.overflow = "";
        if (!e.getAttribute("style")) e.removeAttribute("style");
      };
      images = [...doc.querySelectorAll(myImuoto ? "li[id^='p'][class*='creator-id-']" : v)];
      if (images.length === 0)
        throw Error("API error");
      pageNo.innerHTML = '<span style="height:' + ("paheal.net" === host ? "180px" : "inherit") + ';display:flex;flex-direction:column;">Page ' + url.index + '~<span style="margin:auto 0 30px">out of ' + total + "</span></span>";
      pageNo.className = "thumb";
      if ("paheal.net" === host)
        pageNo.setAttribute("style", "transform: translateY(-180px); margin-bottom: -180px");
      frag.appendChild(pageNo);
      for (let a of images) {
        let img = a.querySelector("img");
        a.style.overflow = "hidden";
        img.addEventListener("load", fn, { once : true });
        frag.appendChild(a);
      }
      container = d.querySelector(v).parentNode;
      if (container.lastElementChild.tagName === "SPAN") container.appendChild(frag);
      else container.insertBefore(frag, container.querySelector(v + ":last-of-type + *"));
      target().classList.remove("loadingu");
      if (paginator.go) paginator();
      if (list.length > 0) {
        events(true);
        process();
      } return;
    } catch(err) { console.error(err); }
  }, req = _ => fetch(url.href).then(
    x => x.text().then(
      text => page((new DOMParser()).parseFromString(text, "text/html"))
    )
  ).catch(err => {
    target().classList.remove("loadingu");
    if (typeof err !== "undefined") {
      if (_.attempt < 10) {
        console.error(`An error occured, ${~_.attempt + 11} retries left\n`, err.message, err.stack);
        ++_.attempt;
        setTimeout(req, 5000, _);
      } else
        console.error("Maximum number of retries reached\n", err.message, err.stack);
    }
  }), process = function(_override) {
    if ((!d.hidden && vis()) || (typeof _override === "boolean" ? _override : false)) {
      target().classList.add("loadingu");
      events();
      url = list.shift();
      return req({attempt: 0});
    }
  }, events = function(_on) {
    var name = _on ? "addEventListener" : "removeEventListener", obj = { passive : true };
    ["scroll", "resize", "visibilitychange"].forEach(evt => window[name](evt, process, obj));
  }, list = [], r = /(page=|pid=|index\/)([0-9]+)|(list\/(?:[^\/]+\/)?)([0-9]+)$/, paginator = function() {
    var el = target(), rect1 = d.querySelector(".thumb:last-of-type"),
      el2 = d.querySelector(".sidebar"), rect2;
    if (el.classList.contains("pagination")) el = el.parentNode;
    rect1 = rect1.offsetTop + rect1.offsetHeight;
    rect2 = el2.offsetTop + el2.offsetHeight - 9;
    if (rect2 >= rect1) {
      el.style.position = "absolute";
      el.style.top = rect1 + "px";
      el.style.left = "calc(50vw + " + el2.getBoundingClientRect().width / 2 + "px)";
      el.style.transform = 'translateX(-50%)';
    } else {
      el.style.position = "";
      el.style.top = "";
      el.style.left = "";
      el.style.transform = "";
      paginator.go = false;
    }
  };
  const target = () => d.querySelector("div.pagination") || d.querySelector("div#paginator") || d.querySelector("section#paginator");
  {
    let style = d.createElement("style");
    style.appendChild(d.createTextNode(`.loadingu {
  position: relative;
}
.loadingu::after {
  content: "" ! important;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  min-width: 34px;
  min-height: 34px;
  background: rgba(0,0,0,.5) no-repeat center center url(data:image/svg+xml,%3Csvg%20width%3D%2234px%22%20height%3D%2234px%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20100%20100%22%20preserveAspectRatio%3D%22xMidYMid%22%20class%3D%22uil-ring-alt%22%3E%3Crect%20x%3D%220%22%20y%3D%220%22%20width%3D%22100%22%20height%3D%22100%22%20fill%3D%22none%22%20class%3D%22bk%22%3E%3C%2Frect%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2240%22%20stroke%3D%22%23b4b197%22%20fill%3D%22none%22%20stroke-width%3D%2210%22%20stroke-linecap%3D%22round%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2240%22%20stroke%3D%22%23f4efcc%22%20fill%3D%22none%22%20stroke-width%3D%226%22%20stroke-linecap%3D%22round%22%3E%3Canimate%20attributeName%3D%22stroke-dashoffset%22%20dur%3D%221s%22%20repeatCount%3D%22indefinite%22%20from%3D%220%22%20to%3D%22502%22%3E%3C%2Fanimate%3E%3Canimate%20attributeName%3D%22stroke-dasharray%22%20dur%3D%221s%22%20repeatCount%3D%22indefinite%22%20values%3D%22150.6%20100.4%3B1%20250%3B150.6%20100.4%22%3E%3C%2Fanimate%3E%3C%2Fcircle%3E%3C%2Fsvg%3E);
}`));
    d.head.appendChild(style);
  }
  if (target() && /\/post\/?|page=post/.test(location.href)) {
    let pid = location.href.match(r),
    p = ((pid && pid[1] === "index/" || myImuoto) ? target().lastElementChild.previousElementSibling : target().lastElementChild).href,
    n = d.querySelectorAll(v).length,
    start_index, end_index, increment = 1, index = 0;
    if (host === "paheal.net") {
      let ayy = [...target().children[0].children];
      p = ayy[ayy.indexOf(ayy.find(el => !!~el.textContent.indexOf("Random"))) + 2].href;
    }
    if (!p) return;
    switch(host) {
    case "booru.org":
      start_index = pid ? pid[2] / n : 0;
      increment = n;
      end_index = p.match(r)[2] / n;
      index = 1;
      break;
    case "e621.net":
      start_index = pid ? +pid[2] : 2;
      end_index = +p.match(r)[2];
      break;
    case "yande.re":
    case "lolibooru.moe":
    case "konachan.com":
    case "hypnohub.net":
      start_index = pid ? +pid[2] : 1;
      end_index = +p.match(r)[2];
      break;
    case "paheal.net":
      start_index = pid ? +pid[4] : 1;
      end_index = +p.match(r)[4];
      break;
    default:
      start_index = pid ? pid[2] / n : 0;
      increment = n;
      end_index = p.match(r)[2] / n;
      index = 1;
      paginator.go = true;
      break;
    }
    while(start_index < end_index)
      list.push({
        href: p.replace(r, (host === "paheal.net" ? "$3" : "$1") + ++start_index * increment),
        index: start_index + index
      });
    total = end_index + index;
  } else
    throw Error("*shrug*");
  if (paginator.go) paginator();
  window.addEventListener("keypress", e => {
    if (typeof url !== "object" && vis()) process();
  }, { once : true });
  d.addEventListener("gelbooru-slide", e => {
    if (list.length > 0)
      events(e.detail);
  }, false);
  d.addEventListener("gelbooru-slide-next", e => {
    if (list.length > 0) {
      clearTimeout(e.detail);
      d.querySelector(".loadingu").classList.remove("loadingu");
      process(true);
    }
  }, false);
  events(true);
  if (vis()) process();
}());