Embedded Image Viewer

Embedds the clicked Image on the Current Side, so you can veiw it without loading the submission Page
当前为 2023-01-27 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name        Embedded Image Viewer
// @namespace   Violentmonkey Scripts
// @match       *://*.furaffinity.net/browse/*
// @match       *://*.furaffinity.net/gallery/*
// @match       *://*.furaffinity.net/search/*
// @match       *://*.furaffinity.net/favorites/*
// @match       *://*.furaffinity.net/controls/favorites/*
// @match       *://*.furaffinity.net/controls/submissions/*
// @match       *://*.furaffinity.net/msg/submissions/*
// @exclude-match *://*.furaffinity.net/view/*
// @grant       none
// @version     1.0
// @author      Midori Dragon
// @description Embedds the clicked Image on the Current Side, so you can veiw it without loading the submission Page
// @icon        https://www.furaffinity.net/themes/beta/img/banners/fa_logo.png?v2
// @license     MIT
// ==/UserScript==

// jshint esversion: 8

let isShowing = false;
let notClosingElemsArr = [];

document.addEventListener("click", function(event) {
  if (isShowing && !notClosingElemsArr.includes(event.target.id)) {
    event.preventDefault();
    document.getElementById("embeddedElem").remove();
    isShowing = false;
  }
});

for (const figure of document.getElementsByTagName("figure")) {
  figure.addEventListener("click", async function(event) {
    if (!event.ctrlKey) {
      event.preventDefault();
      if (!isShowing)
        showImage(figure);
    }
  });
}

async function showImage(figure) {
  const ddmenu = document.getElementById("ddmenu");
  const imageID = figure.id.substring(figure.id.indexOf("-") + 1);
  const favdoc = await getHTML("https://www.furaffinity.net/view/" + imageID);

  await createElements(ddmenu, favdoc, imageID, figure);

  isShowing = true;
}

async function createElements(ddmenu, favdoc, imageID, figure) {
  const margin = 20;
  const favlink = await getfavlink(favdoc);

  let embeddedElem = document.createElement("div");
  embeddedElem.id = "embeddedElem";
  embeddedElem.style.position = "fixed";
  embeddedElem.style.zIndex = "999999";
  embeddedElem.style.width = window.innerWidth + "px";
  embeddedElem.style.height = window.innerHeight + "px";
  embeddedElem.style.background = "rgba(30,33,38,.65)";

  let backgroundElem = document.createElement("div");
  backgroundElem.id = "embeddedBackgroundElem";
  notClosingElemsArr.push(backgroundElem.id);
  backgroundElem.style.position = "fixed";
  backgroundElem.style.display = "flex";
  backgroundElem.style.flexDirection = "column";
  backgroundElem.style.left = "50%";
  backgroundElem.style.transform = "translate(-50%, 0%)";
  backgroundElem.style.marginTop = margin + "px";
  backgroundElem.style.padding = margin + "px";
  backgroundElem.style.background = "rgba(30,33,38,.90)";
  backgroundElem.style.borderRadius = "10px";

  let submissionContainer = document.createElement("a");
  submissionContainer.id = "embeddedSubmissionContainer";
  notClosingElemsArr.push(submissionContainer.id);
  submissionContainer.href = favdoc.querySelector('meta[property="og:url"]').content;

  let submissionImg = favdoc.getElementById("submissionImg");
  submissionImg.id = "embeddedSubmissionImg";
  notClosingElemsArr.push(submissionImg.id);
  submissionImg.removeAttribute("data-fullview-src");
  submissionImg.removeAttribute("data-preview-src");
  submissionImg.style.maxWidth = "inherit";
  submissionImg.style.maxHeight = "inherit";
  submissionImg.style.maxWidth = window.innerWidth - margin * 2 + "px";
  submissionImg.style.maxHeight = window.innerHeight - ddmenu.clientHeight - 38 * 2 - margin * 2 - 100 + "px";
  submissionImg.style.borderRadius = "10px";
  submissionContainer.appendChild(submissionImg);

  backgroundElem.appendChild(submissionContainer);

  let buttonsContainer = document.createElement("div");
  buttonsContainer.id = "embeddedButtonsContainer";
  notClosingElemsArr.push(buttonsContainer.id);
  buttonsContainer.style.marginTop = "20px";
  buttonsContainer.style.marginLeft = "20px";
  buttonsContainer.style.marginRight = "20px";

  let favButton = document.createElement("a");
  favButton.id = "embeddedFavButton";
  notClosingElemsArr.push(favButton.id);
  favButton.type = "button";
  favButton.className = "button standard mobile-fix";
  if (favlink.includes("unfav"))
    favButton.textContent = "-Fav";
  else
    favButton.textContent = "+Fav";
  favButton.style.marginLeft = "4px";
  favButton.style.marginRight = "4px";
  favButton.onclick = function() {
    favButton.textContent = "...";
    favImage(figure, favlink);
  };
  buttonsContainer.appendChild(favButton);

  let downloadButton = document.createElement("a");
  downloadButton.id = "embeddedDownloadButton";
  notClosingElemsArr.push(downloadButton.id);
  downloadButton.type = "button";
  downloadButton.className = "button standard mobile-fix";
  downloadButton.textContent = "Download";
  downloadButton.style.marginLeft = "4px";
  downloadButton.style.marginRight = "4px";
  const downloadLink = await getDownloadLink(favdoc);
  downloadButton.href = downloadLink;
  downloadButton.download = downloadLink.substring(downloadLink.lastIndexOf("/") + 1);
  buttonsContainer.appendChild(downloadButton);

  let closeButton = document.createElement("a");
  closeButton.id = "embeddedCloseButton";
  notClosingElemsArr.push(closeButton.id);
  closeButton.type = "button";
  closeButton.className = "button standard mobile-fix";
  closeButton.textContent = "Close";
  //closeButton.style.float = "right";
  closeButton.style.marginLeft = "4px";
  closeButton.style.marginRight = "4px";
  closeButton.onclick = function() {
    ddmenu.removeChild(embeddedElem);
    isShowing = false;
  };
  buttonsContainer.appendChild(closeButton);

  backgroundElem.appendChild(buttonsContainer);

  embeddedElem.appendChild(backgroundElem);

  ddmenu.appendChild(embeddedElem);
}

async function favImage(figure, favlink) {
  if (!figure)
    return;

  var footer = document.getElementById("footer");
  var iframe = document.createElement("iframe");
  iframe.id = "favIFrame";
  iframe.src = favlink;
  iframe.style.display = "none";
  iframe.addEventListener("load", async function() {
    var favdoc = iframe.contentDocument;
    footer.removeChild(iframe);
    var imageLink = figure.childNodes[0].childNodes[0].childNodes[0].href;
    favlink = await getfavlink(favdoc);
    changeFavButtonLink(favlink, figure);
  });
  footer.appendChild(iframe);
}

async function changeFavButtonLink(favlink, figure) {
  var button = document.getElementById("embeddedFavButton");
  if (favlink.includes("unfav"))
    button.textContent = "-Fav";
  else
    button.textContent = "+Fav";
  button.onclick = function(){
    button.textContent = "...";
    favImage(figure, favlink);
  };
}

async function getfavlink(subdoc) {
  var buttons = subdoc.querySelectorAll('a[class="button standard mobile-fix"]');
  for (const button of buttons)
    if (button.textContent.includes("Fav") && button.textContent.length <= 4)
      return button.href;
}

async function getDownloadLink(subdoc) {
  var buttons = subdoc.querySelectorAll('a[class="button standard mobile-fix"]');
  for (const button of buttons)
    if (button.textContent.includes("Download"))
      return button.href;
}

async function getHTML(url) {
  try {
    const response = await fetch(url);
    const html = await response.text();
    const parser = new DOMParser();
    const doc = parser.parseFromString(html, "text/html");
    return doc;
  } catch (error) {
    console.error(error);
  }
}