☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

目前為 2020-05-19 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name        Mouseover Popup Image Viewer
  3. // @namespace   https://github.com/tophf
  4. // @description Shows images and videos behind links and thumbnails.
  5. //
  6. // @include     *
  7. // @connect     *
  8. //
  9. // allow rule installer in config dialog https://w9p.co/userscripts/mpiv/more_host_rules.html
  10. // @connect     w9p.co
  11. //
  12. // @grant       GM_getValue
  13. // @grant       GM_setValue
  14. // @grant       GM_xmlhttpRequest
  15. // @grant       GM_download
  16. // @grant       GM_openInTab
  17. // @grant       GM_registerMenuCommand
  18. //
  19. // @version     1.1.15
  20. // @author      tophf
  21. //
  22. // @original-version 2017.9.29
  23. // @original-author  kuehlschrank
  24. //
  25. // @supportURL  https://github.com/tophf/mpiv/issues
  26. // @homepage    https://w9p.co/userscripts/mpiv/
  27. // @icon        https://w9p.co/userscripts/mpiv/icon.png
  28. // ==/UserScript==
  29.  
  30. 'use strict';
  31.  
  32. //#region Globals
  33.  
  34. /** @type mpiv.Config */
  35. let cfg;
  36. /** @type mpiv.AppInfo */
  37. let ai = {rule: {}};
  38. /** @type Element */
  39. let elConfig;
  40.  
  41. const doc = document;
  42. const hostname = location.hostname;
  43. const dotDomain = '.' + hostname;
  44. const isGoogleDomain = /(^|\.)google(\.com?)?(\.\w+)?$/.test(hostname);
  45. const isGoogleImages = isGoogleDomain && /[&?]tbm=isch(&|$)/.test(location.search);
  46. const isFF = CSS.supports('-moz-appearance', 'none');
  47. const AudioContext = window.AudioContext || function () {};
  48.  
  49. const PREFIX = 'mpiv-';
  50. const STATUS_ATTR = `${PREFIX}status`;
  51. const MSG = Object.assign({}, ...[
  52.   'getViewSize',
  53.   'viewSize',
  54. ].map(k => ({[k]: `${PREFIX}${k}`})));
  55. const WHEEL_EVENT = 'onwheel' in doc ? 'wheel' : 'mousewheel';
  56. // time for volatile things to settle down meanwhile we postpone action
  57. // examples: loading image from cache, quickly moving mouse over one element to another
  58. const SETTLE_TIME = 50;
  59. // used to detect JS code in host rules
  60. const RX_HAS_CODE = /(^|[^-\w])return[\W\s]/;
  61. const ZOOM_MAX = 16;
  62.  
  63. //#endregion
  64.  
  65. const App = {
  66.  
  67.   enabled: true,
  68.   imageTab: false,
  69.   globalStyle: '',
  70.   popupStyleBase: '',
  71.  
  72.   activate(info, event) {
  73.     const {match, node, rule, url} = info;
  74.     if (elConfig) console.info({node, rule, url, match});
  75.     if (ai.node) App.deactivate();
  76.     ai = info;
  77.     ai.force = event.ctrlKey;
  78.     ai.gNum = 0;
  79.     ai.zooming = cfg.css.includes(`${PREFIX}zooming`);
  80.     Util.suppressTooltip();
  81.     Calc.updateViewSize();
  82.     Events.toggle(true);
  83.     Events.trackMouse(event);
  84.     if (cfg.xhr && CspSniffer.init && location.protocol === 'https:')
  85.       CspSniffer.init();
  86.     if (ai.force) {
  87.       App.start();
  88.     } else if (cfg.start === 'auto' && !rule.manual) {
  89.       App.belate();
  90.     } else {
  91.       Status.set('ready');
  92.     }
  93.   },
  94.  
  95.   belate() {
  96.     if (cfg.preload) {
  97.       ai.preloadStart = now();
  98.       App.start();
  99.       Status.set('+preloading');
  100.       setTimeout(Status.set, cfg.delay, '-preloading');
  101.     } else {
  102.       ai.timer = setTimeout(App.start, cfg.delay);
  103.     }
  104.   },
  105.  
  106.   checkProgress({start} = {}) {
  107.     const p = ai.popup;
  108.     if (!p)
  109.       return;
  110.     const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  111.     const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  112.     if (h)
  113.       return App.canCommit(w, h);
  114.     if (start) {
  115.       clearInterval(ai.timerProgress);
  116.       ai.timerProgress = setInterval(App.checkProgress, 150);
  117.     }
  118.   },
  119.  
  120.   canCommit(w, h) {
  121.     if (!ai.force && ai.rect && !ai.gItems &&
  122.         Math.max(w / (ai.rect.width || 1), h / (ai.rect.height || 1)) < cfg.scale) {
  123.       App.deactivate();
  124.       return false;
  125.     }
  126.     App.stopTimers();
  127.     const wait = ai.preloadStart && (ai.preloadStart + cfg.delay - now());
  128.     if (wait > 0) {
  129.       ai.timer = setTimeout(App.checkProgress, wait);
  130.     } else if ((ai.urls || 0).length && Math.max(w, h) < 130) {
  131.       App.handleError({type: 'error'});
  132.     } else {
  133.       App.commit();
  134.     }
  135.     return true;
  136.   },
  137.  
  138.   async commit() {
  139.     App.updateStyles();
  140.     Calc.measurePopup();
  141.     const p = ai.popup;
  142.     const willZoom = cfg.zoom === 'auto' || App.imageTab && cfg.imgtab;
  143.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  144.     if (willMove)
  145.       Popup.move();
  146.     Bar.updateName();
  147.     Bar.updateDetails();
  148.     Status.set(!ai.popupLoaded && 'loading');
  149.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  150.                ai.nheight > p.clientHeight + ai.extras.h;
  151.     if (ai.large) {
  152.       Status.set('+large');
  153.       // FF renders a blank bg+border first; I couldn't find a proper solution
  154.       if (isFF && p.complete)
  155.         p.style.backgroundImage = `url('${p.src}')`;
  156.     }
  157.   },
  158.  
  159.   deactivate({wait} = {}) {
  160.     App.stopTimers();
  161.     if (ai.req)
  162.       tryCatch.call(ai.req, ai.req.abort);
  163.     if (ai.tooltip)
  164.       ai.tooltip.node.title = ai.tooltip.text;
  165.     Status.set(false);
  166.     Bar.set(false);
  167.     Events.toggle(false);
  168.     Popup.destroy();
  169.     if (wait) {
  170.       App.enabled = false;
  171.       setTimeout(App.enable, 200);
  172.     }
  173.     ai = {rule: {}};
  174.   },
  175.  
  176.   enable() {
  177.     App.enabled = true;
  178.   },
  179.  
  180.   handleError(e, rule = ai.rule) {
  181.     if (rule && rule.onerror === 'skip')
  182.       return;
  183.     const fe = Util.formatError(e, rule);
  184.     if (!rule || !ai.urls || !ai.urls.length)
  185.       console.warn(fe.consoleFormat, ...fe.consoleArgs);
  186.     if (ai.urls && ai.urls.length) {
  187.       ai.url = ai.urls.shift();
  188.       if (ai.url) {
  189.         App.stopTimers();
  190.         App.startSingle();
  191.       } else {
  192.         App.deactivate();
  193.       }
  194.     } else if (ai.node) {
  195.       Status.set('error');
  196.       Bar.set(fe.message, 'error');
  197.     }
  198.   },
  199.  
  200.   /** @param {MessageEvent} e */
  201.   onMessage(e) {
  202.     if (typeof e.data === 'string' && e.data === MSG.getViewSize) {
  203.       for (const el of doc.getElementsByTagName('iframe')) {
  204.         if (el.contentWindow === e.source) {
  205.           const [w, h] = Calc.frameSize(el, window);
  206.           e.source.postMessage(`${MSG.viewSize}:${w}:${h}`, '*');
  207.           return;
  208.         }
  209.       }
  210.     }
  211.   },
  212.  
  213.   /** @param {MessageEvent} e */
  214.   onMessageChild(e) {
  215.     if (e.source === parent && typeof e.data === 'string' && e.data.startsWith(MSG.viewSize)) {
  216.       window.removeEventListener('message', App.onMessageChild);
  217.       const [w, h] = e.data.split(':').slice(1).map(parseFloat);
  218.       if (w && h) ai.view = {w, h};
  219.     }
  220.   },
  221.  
  222.   start() {
  223.     // check explicitly as the cursor may have moved into an iframe so mouseout wasn't reported
  224.     if (!ai.node.closest(':hover')) {
  225.       App.deactivate();
  226.       return;
  227.     }
  228.     App.updateStyles();
  229.     if (ai.gallery)
  230.       App.startGallery();
  231.     else
  232.       App.startSingle();
  233.   },
  234.  
  235.   startSingle() {
  236.     Status.loading();
  237.     ai.imageUrl = null;
  238.     if (ai.rule.follow && !ai.rule.q && !ai.rule.s) {
  239.       Remoting.findRedirect();
  240.     } else if (ai.rule.q && !Array.isArray(ai.urls)) {
  241.       App.startFromQ();
  242.     } else {
  243.       Popup.create(ai.url);
  244.       Ruler.runC();
  245.     }
  246.   },
  247.  
  248.   async startFromQ() {
  249.     try {
  250.       const {responseText, doc, finalUrl} = await Remoting.getDoc(ai.url);
  251.       const url = Ruler.runQ(responseText, doc, finalUrl);
  252.       if (!url)
  253.         throw 'The "q" rule did not produce any URL.';
  254.       if (RuleMatcher.isFollowableUrl(url, ai.rule)) {
  255.         const info = RuleMatcher.find(url, ai.node, {noHtml: true});
  256.         if (!info || !info.url)
  257.           throw `Couldn't follow URL: ${url}`;
  258.         Object.assign(ai, info);
  259.         App.startSingle();
  260.       } else {
  261.         Popup.create(url, finalUrl);
  262.         Ruler.runC(responseText, doc);
  263.       }
  264.     } catch (e) {
  265.       App.handleError(e);
  266.     }
  267.   },
  268.  
  269.   async startGallery() {
  270.     Status.loading();
  271.     try {
  272.       const startUrl = ai.url;
  273.       const p = ai.rule.s === 'gallery' ? {} : await Remoting.getDoc(startUrl);
  274.       const items = await new Promise(resolve => {
  275.         const it = ai.gallery(p.responseText, p.doc, p.finalUrl, ai.match, ai.rule, ai.node,
  276.           resolve);
  277.         if (Array.isArray(it))
  278.           resolve(it);
  279.       });
  280.       // bail out if the gallery's async callback took too long
  281.       if (ai.url !== startUrl) return;
  282.       ai.gNum = items.length;
  283.       ai.gItems = items.length && items;
  284.       if (ai.gItems) {
  285.         const i = items.index;
  286.         ai.gIndex = i === (i | 0) && items[i] ? i | 0 :
  287.           typeof i === 'string' ? clamp(items.findIndex(x => x.url === i), 0) :
  288.             Gallery.findIndex(ai.url);
  289.         setTimeout(Gallery.next);
  290.       } else {
  291.         throw 'Empty gallery';
  292.       }
  293.     } catch (e) {
  294.       App.handleError(e);
  295.     }
  296.   },
  297.  
  298.   stopTimers() {
  299.     for (const timer of ['timer', 'timerBar', 'timerStatus'])
  300.       clearTimeout(ai[timer]);
  301.     clearInterval(ai.timerProgress);
  302.   },
  303.  
  304.   toggleZoom({keepScale} = {}) {
  305.     const p = ai.popup;
  306.     if (!p || !ai.scales || ai.scales.length < 2)
  307.       return;
  308.     ai.zoomed = !ai.zoomed;
  309.     ai.scale = ai.zoomed && Calc.scaleForFirstZoom(keepScale) || ai.scales[0];
  310.     if (ai.zooming)
  311.       p.classList.add(`${PREFIX}zooming`);
  312.     Popup.move();
  313.     Bar.updateDetails();
  314.     Status.set(ai.zoomed ? 'zoom' : false);
  315.     return ai.zoomed;
  316.   },
  317.  
  318.   updateStyles() {
  319.     Util.addStyle('global',
  320.       (App.globalStyle || createGlobalStyle()) +
  321.       (cfg.css.includes('{') ? cfg.css : `#${PREFIX}-popup {${(cfg.css)}}`));
  322.     Util.addStyle('rule', ai.rule.css || '');
  323.   },
  324. };
  325.  
  326. const Bar = {
  327.  
  328.   set(label, className) {
  329.     let b = ai.bar;
  330.     if (typeof label !== 'string') {
  331.       $remove(b);
  332.       ai.bar = null;
  333.       return;
  334.     }
  335.     if (!b) b = ai.bar = $create('div', {id: `${PREFIX}bar`});
  336.     App.updateStyles();
  337.     Bar.updateDetails();
  338.     Bar.show();
  339.     b.innerHTML = label;
  340.     if (!b.parentNode) {
  341.       doc.body.appendChild(b);
  342.       Util.forceLayout(b);
  343.     }
  344.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  345.   },
  346.  
  347.   show() {
  348.     clearTimeout(ai.timerBar);
  349.     ai.bar.style.removeProperty('opacity');
  350.     ai.timerBar = setTimeout(() => ai.bar && $css(ai.bar, {opacity: 0}), 3000);
  351.   },
  352.  
  353.   updateName() {
  354.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  355.     if (gi) {
  356.       const item = gi[i];
  357.       const noDesc = !gi.some(_ => _.desc);
  358.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  359.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  360.         item.desc,
  361.       ].filter(Boolean).join(' - ')}`;
  362.       Bar.set(c.trim() || ' ', 'gallery', true);
  363.     } else if ('caption' in ai) {
  364.       Bar.set(ai.caption, 'caption');
  365.     } else if (ai.tooltip) {
  366.       Bar.set(ai.tooltip.text, 'tooltip');
  367.     } else {
  368.       Bar.set(' ', 'info');
  369.     }
  370.   },
  371.  
  372.   updateDetails() {
  373.     if (!ai.bar) return;
  374.     const r = ai.rotate;
  375.     const zoom = ai.nwidth && `${
  376.       Math.round(ai.scale * 100)
  377.     }%${
  378.       ai.flipX || ai.flipY ? `, ${ai.flipX ? '⇆' : ''}${ai.flipY ? '⇅' : ''}` : ''
  379.     }${
  380.       r ? ', ' + (r > 180 ? r - 360 : r) + '°' : ''
  381.     }, ${
  382.       ai.nwidth
  383.     } x ${
  384.       ai.nheight
  385.     } px, ${
  386.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  387.     } MP`.replace(/\x20/g, '\xA0');
  388.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  389.       if (zoom) ai.bar.dataset.zoom = zoom;
  390.       else delete ai.bar.dataset.zoom;
  391.       Bar.show();
  392.     }
  393.   },
  394. };
  395.  
  396. const Calc = {
  397.  
  398.   frameSize(elFrame, parentWindow) {
  399.     if (!elFrame) return;
  400.     const r = elFrame.getBoundingClientRect();
  401.     const w = clamp(r.width, 0, parentWindow.innerWidth - r.left);
  402.     const h = clamp(r.height, 0, parentWindow.innerHeight - r.top);
  403.     return [w, h];
  404.   },
  405.  
  406.   generateScales(fit) {
  407.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  408.     const zoomStep = cfg.zoomStep / 100;
  409.     const arr = [scale];
  410.     if (fit !== 1) {
  411.       const diff = goal / scale;
  412.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  413.       const step = steps && Math.pow(diff, 1 / steps);
  414.       for (let i = steps; --i > 0;)
  415.         arr.push((scale *= step));
  416.       arr.push(scale = goal);
  417.     }
  418.     while ((scale *= zoomStep) <= ZOOM_MAX)
  419.       arr.push(scale);
  420.     return arr;
  421.   },
  422.  
  423.   measurePopup() {
  424.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  425.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  426.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  427.     if (p.clientWidth > nw) {
  428.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  429.       nh = ai.nheight = w / nw * nh | 0;
  430.       nw = ai.nwidth = w;
  431.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  432.     }
  433.     p.className = `${PREFIX}show`;
  434.     p.removeAttribute('style');
  435.     const s = getComputedStyle(p);
  436.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  437.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  438.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  439.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  440.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  441.     ai.extras = {
  442.       inw, inh,
  443.       outw, outh,
  444.       o: o2 / 2,
  445.       w: inw + outw,
  446.       h: inh + outh,
  447.     };
  448.     const fit = Math.min(
  449.       (ai.view.w - ai.extras.w) / ai.nwidth,
  450.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  451.     const isCustom = !cfg.fit && cfg.scales.length;
  452.     let cutoff = Math.min(1, fit);
  453.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  454.     if (isCustom) {
  455.       const dst = [];
  456.       for (const scale of cfg.scales) {
  457.         const val = parseFloat(scale) || fit;
  458.         dst.push(val);
  459.         if (isCustom && typeof scale === 'string') {
  460.           if (scale.includes('!')) cutoff = val;
  461.           if (scale.includes('*')) scaleZoom = val;
  462.         }
  463.       }
  464.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  465.     } else {
  466.       ai.scales = Calc.generateScales(fit);
  467.     }
  468.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  469.     ai.scaleFit = fit;
  470.     ai.scaleZoom = scaleZoom;
  471.   },
  472.  
  473.   rect() {
  474.     let {node, rule} = ai;
  475.     let n = rule.rect && node.closest(rule.rect);
  476.     if (n) return n.getBoundingClientRect();
  477.     const nested = node.getElementsByTagName('*');
  478.     let maxArea = 0;
  479.     let maxBounds;
  480.     n = node;
  481.     for (let i = 0; n; n = nested[i++]) {
  482.       const bounds = n.getBoundingClientRect();
  483.       const area = bounds.width * bounds.height;
  484.       if (area > maxArea) {
  485.         maxArea = area;
  486.         maxBounds = bounds;
  487.         node = n;
  488.       }
  489.     }
  490.     return maxBounds;
  491.   },
  492.  
  493.   scaleBiggerThan(scale, i, arr) {
  494.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  495.   },
  496.  
  497.   scaleIndex(dir) {
  498.     const i = ai.scales.indexOf(ai.scale);
  499.     if (i >= 0) return i + dir;
  500.     for (
  501.       let len = ai.scales.length,
  502.         i = dir > 0 ? 0 : len - 1;
  503.       i >= 0 && i < len;
  504.       i += dir
  505.     ) {
  506.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  507.         return i;
  508.     }
  509.     return -1;
  510.   },
  511.  
  512.   scaleForFirstZoom(keepScale) {
  513.     const z = ai.scaleZoom;
  514.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  515.   },
  516.  
  517.   updateViewSize() {
  518.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  519.     ai.view = {
  520.       w: view.clientWidth,
  521.       h: view.clientHeight,
  522.     };
  523.     if (window === top) return;
  524.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  525.     if (w && h) {
  526.       ai.view = {w, h};
  527.     } else {
  528.       window.addEventListener('message', App.onMessageChild);
  529.       parent.postMessage(MSG.getViewSize, '*');
  530.     }
  531.   },
  532. };
  533.  
  534. class Config {
  535.  
  536.   constructor({data: c = GM_getValue('cfg'), save}) {
  537.     if (typeof c === 'string')
  538.       c = tryCatch(JSON.parse, c);
  539.     if (typeof c !== 'object' || !c)
  540.       c = {};
  541.     const {DEFAULTS} = Config;
  542.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  543.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  544.         '';
  545.     if (c.version !== DEFAULTS.version) {
  546.       if (typeof c.hosts === 'string')
  547.         c.hosts = c.hosts.split('\n')
  548.           .map(s => tryCatch(JSON.parse, s) || s)
  549.           .filter(Boolean);
  550.       if (c.close === true || c.close === false)
  551.         c.zoomOut = c.close ? 'auto' : 'stay';
  552.       for (const key in DEFAULTS)
  553.         if (typeof c[key] !== typeof DEFAULTS[key])
  554.           c[key] = DEFAULTS[key];
  555.       if (c.version === 3 && c.scales[0] === 0)
  556.         c.scales[0] = '0!';
  557.       for (const key in c)
  558.         if (!(key in DEFAULTS))
  559.           delete c[key];
  560.       c.version = DEFAULTS.version;
  561.       if (save)
  562.         GM_setValue('cfg', c);
  563.     }
  564.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  565.       App.globalStyle = '';
  566.     if (!Array.isArray(c.scales))
  567.       c.scales = [];
  568.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  569.     Object.assign(this, DEFAULTS, c);
  570.   }
  571. }
  572.  
  573. /** @type mpiv.Config */
  574. Config.DEFAULTS = Object.assign(Object.create(null), {
  575.   center: false,
  576.   css: '',
  577.   delay: 500,
  578.   fit: '',
  579.   globalStatus: false,
  580.   // prefer ' inside rules because " will be displayed as \"
  581.   // example: "img[src*='icon']"
  582.   hosts: [{
  583.     name: 'No popup for YouTube thumbnails',
  584.     d: 'www.youtube.com',
  585.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  586.     s: '',
  587.   }, {
  588.     name: 'No popup for SVG/PNG icons',
  589.     d: '',
  590.     e: "img[src*='icon']",
  591.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  592.     s: '',
  593.   }],
  594.   imgtab: false,
  595.   preload: false,
  596.   scale: 1.25,
  597.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  598.   start: 'auto',
  599.   uiBackgroundColor: '#ffffff',
  600.   uiBackgroundOpacity: 100,
  601.   uiBorderColor: '#000000',
  602.   uiBorderOpacity: 100,
  603.   uiBorder: 0,
  604.   uiShadowColor: '#000000',
  605.   uiShadowOpacity: 80,
  606.   uiShadow: 20,
  607.   uiPadding: 0,
  608.   uiMargin: 0,
  609.   version: 6,
  610.   xhr: true,
  611.   zoom: 'context',
  612.   zoomOut: 'auto',
  613.   zoomStep: 133,
  614. });
  615.  
  616. const CspSniffer = {
  617.  
  618.   /** @type {?Object<string,string[]>} */
  619.   csp: null,
  620.   /** @type {?Promise<void>} */
  621.   initPending: null,
  622.   selfUrl: location.origin + '/',
  623.  
  624.   // will be null when done
  625.   init() {
  626.     this.initPending = this.initPending || new Promise(resolve => {
  627.       GM_xmlhttpRequest({
  628.         url: location.href,
  629.         method: 'HEAD',
  630.         onload: response => {
  631.           this.csp = this._parse(response);
  632.           this.init = this.initPending = null;
  633.           resolve();
  634.         },
  635.       });
  636.     });
  637.   },
  638.  
  639.   async check(url) {
  640.     await this.initPending;
  641.     const isVideo = Util.isVideoUrl(url);
  642.     let mode;
  643.     if (this.csp) {
  644.       const src = this.csp[isVideo ? 'media' : 'img'];
  645.       if (!src.some(this._srcMatches, url))
  646.         mode = [mode, 'blob', 'data'].find(m => src.includes(`${m}:`));
  647.     }
  648.     return [mode || ai.xhr, isVideo];
  649.   },
  650.  
  651.   _parse({responseHeaders}) {
  652.     const csp = responseHeaders.match(/(?:^|[\r\n])\s*Content-Security-Policy:([^\r\n]*)/i);
  653.     if (!csp) return;
  654.     const src = {};
  655.     const rx = /[\s;](default|img|media)-src ([^;]+)/g;
  656.     for (let m; (m = rx.exec(csp[1]));)
  657.       src[m[1]] = m[2].trim().split(/\s+/);
  658.     if (!src.img) src.img = src.default || [];
  659.     if (!src.media) src.media = src.default || [];
  660.     for (const set of [src.img, src.media]) {
  661.       set.forEach((item, i) => {
  662.         if (item !== '*' && item.includes('*')) {
  663.           set[i] = new RegExp(item
  664.             .replace(/[.+?^$|()[\]{}]/g, '\\$&')
  665.             .replace(/(\\\.)?(\*)(\\\.)?/g, (_, a, b, c) =>
  666.               `${a ? '\\.?' : ''}[^:/]*${c ? '\\.?' : ''}`)
  667.             .replace(/[^/]$/, '$&/'),
  668.           'y');
  669.         }
  670.       });
  671.     }
  672.     return src;
  673.   },
  674.  
  675.   /** @this string */
  676.   _srcMatches(src) {
  677.     return src instanceof RegExp ? src.test(this) :
  678.       src === '*' ||
  679.       src && this.startsWith(src) && (src.endsWith('/') || this[src.length] === '/') ||
  680.       src === "'self'" && this.startsWith(CspSniffer.selfUrl);
  681.   },
  682. };
  683.  
  684. const Events = {
  685.  
  686.   hoverData: [],
  687.   hoverTimer: 0,
  688.  
  689.   onMouseOver(e) {
  690.     if (!App.enabled || e.shiftKey || ai.zoomed)
  691.       return;
  692.     let node = e.target;
  693.     if (node === ai.popup ||
  694.         node === doc.body ||
  695.         node === doc.documentElement ||
  696.         node === elConfig ||
  697.         ai.gallery && ai.rectHovered)
  698.       return;
  699.     if (node.shadowRoot)
  700.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  701.     // we don't want to process everything in the path of a quickly moving mouse cursor
  702.     Events.hoverData = [now(), e, node];
  703.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  704.   },
  705.  
  706.   onMouseOverThrottled() {
  707.     const [start, e, node] = Events.hoverData;
  708.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  709.     const wait = start + SETTLE_TIME - now();
  710.     Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  711.     if (Events.hoverTimer)
  712.       return;
  713.     if (!node.closest(':hover'))
  714.       return;
  715.     if (!Ruler.rules)
  716.       Ruler.init();
  717.     let a;
  718.     const tag = node.tagName;
  719.     const src = node.currentSrc || node.src;
  720.     const isPic = tag === 'IMG' || tag === 'VIDEO' && /\.(webm|mp4)(\?|$)/.test(src);
  721.     const info =
  722.       // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  723.       tag !== 'A' &&
  724.         RuleMatcher.find(isPic && !src.startsWith('data:') && Util.rel2abs(src), node) ||
  725.       (a = node.closest('A')) &&
  726.         RuleMatcher.findForLink(a) ||
  727.       isPic &&
  728.         {node, rule: {}, url: src};
  729.     if (info && info.url && info.node !== ai.node)
  730.       App.activate(info, e);
  731.   },
  732.  
  733.   onMouseOut(e) {
  734.     if (!e.relatedTarget && !e.shiftKey)
  735.       App.deactivate();
  736.   },
  737.  
  738.   onMouseOutShadow(e) {
  739.     const root = e.target.shadowRoot;
  740.     if (root) {
  741.       root.removeEventListener('mouseover', Events.onMouseOver);
  742.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  743.     }
  744.   },
  745.  
  746.   onMouseMove(e) {
  747.     Events.trackMouse(e);
  748.     if (e.shiftKey) {
  749.       ai.lazyUnload = true;
  750.     } else if (!ai.zoomed && !ai.rectHovered) {
  751.       App.deactivate();
  752.     } else if (ai.zoomed) {
  753.       Popup.move();
  754.       const {cx, cy, view: {w, h}} = ai;
  755.       const bx = w / 6;
  756.       const by = h / 6;
  757.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  758.       Status.set(`${onEdge ? '+' : '-'}edge`);
  759.     }
  760.   },
  761.  
  762.   onMouseDown({shiftKey, button}) {
  763.     if (button === 0 && shiftKey && ai.popup && ai.popup.controls) {
  764.       ai.controlled = ai.zoomed = true;
  765.     } else if (button === 2 || shiftKey) {
  766.       // we ignore RMB and Shift
  767.     } else {
  768.       App.deactivate({wait: true});
  769.       document.addEventListener('mouseup', App.enable, {once: true});
  770.     }
  771.   },
  772.  
  773.   onMouseScroll(e) {
  774.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  775.     if (ai.zoomed) {
  776.       Events.zoomInOut(dir);
  777.     } else if (ai.gNum > 1 && ai.popup) {
  778.       Gallery.next(-dir);
  779.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  780.       App.toggleZoom();
  781.     } else {
  782.       App.deactivate();
  783.       return;
  784.     }
  785.     dropEvent(e);
  786.   },
  787.  
  788.   onKeyDown(e) {
  789.     const key = eventModifiers(e) + (e.key.length > 1 ? e.key : e.code);
  790.     switch (key) {
  791.       case '+Shift':
  792.         Status.set('+shift');
  793.         if (ai.popup && 'controls' in ai.popup)
  794.           ai.popup.controls = true;
  795.         return;
  796.       case '^Control':
  797.         if (!ai.popup && (cfg.start !== 'auto' || ai.rule.manual))
  798.           App.start();
  799.         return;
  800.       case 'ArrowRight':
  801.       case 'KeyJ':
  802.         Gallery.next(1);
  803.         break;
  804.       case 'ArrowLeft':
  805.       case 'KeyK':
  806.         Gallery.next(-1);
  807.         break;
  808.       case 'KeyD':
  809.         Remoting.saveFile();
  810.         break;
  811.       case 'KeyH': // flip horizontally
  812.       case 'KeyV': // flip vertically
  813.       case 'KeyL': // rotate left
  814.       case 'KeyR': // rotate right
  815.         if (!ai.popup)
  816.           return;
  817.         if (key === 'KeyH' || key === 'KeyV') {
  818.           const side = !!(ai.rotate % 180) ^ (key === 'KeyH') ? 'flipX' : 'flipY';
  819.           ai[side] = !ai[side];
  820.         } else {
  821.           ai.rotate = ((ai.rotate || 0) + 90 * (key === 'KeyL' ? -1 : 1) + 360) % 360;
  822.         }
  823.         Bar.updateDetails();
  824.         Popup.move();
  825.         break;
  826.       case 'KeyT':
  827.         ai.lazyUnload = true;
  828.         GM_openInTab(Util.tabFixUrl() || ai.popup.src);
  829.         App.deactivate();
  830.         break;
  831.       case 'Escape':
  832.         App.deactivate({wait: true});
  833.         break;
  834.       case '!Alt':
  835.         return;
  836.       default:
  837.         App.deactivate({wait: true});
  838.         return;
  839.     }
  840.     dropEvent(e);
  841.   },
  842.  
  843.   onKeyUp(e) {
  844.     if (e.key === 'Shift') {
  845.       Status.set('-shift');
  846.       if ((ai.popup || {}).controls)
  847.         ai.popup.controls = false;
  848.       if (ai.controlled)
  849.         ai.controlled = false;
  850.       else if (ai.popup && (ai.zoomed || ai.rectHovered !== false))
  851.         App.toggleZoom();
  852.       else
  853.         App.deactivate({wait: true});
  854.     }
  855.   },
  856.  
  857.   onContext(e) {
  858.     if (e.shiftKey) return;
  859.     if (cfg.zoom === 'context' && ai.popup && App.toggleZoom()) {
  860.       dropEvent(e);
  861.     } else if (!ai.popup && (cfg.start === 'context' || (cfg.start === 'auto' && ai.rule.manual))) {
  862.       App.start();
  863.       dropEvent(e);
  864.     } else {
  865.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  866.     }
  867.   },
  868.  
  869.   pierceShadow(node, x, y) {
  870.     for (let root; (root = node.shadowRoot);) {
  871.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  872.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  873.       const inner = root.elementFromPoint(x, y);
  874.       if (!inner || inner === node)
  875.         break;
  876.       node = inner;
  877.     }
  878.     return node;
  879.   },
  880.  
  881.   toggle(enable) {
  882.     const onOff = enable ? doc.addEventListener : doc.removeEventListener;
  883.     const passive = enable ? {passive: true} : undefined;
  884.     onOff.call(doc, 'mousemove', Events.onMouseMove, passive);
  885.     onOff.call(doc, 'mouseout', Events.onMouseOut, passive);
  886.     onOff.call(doc, 'mousedown', Events.onMouseDown, passive);
  887.     onOff.call(doc, 'contextmenu', Events.onContext);
  888.     onOff.call(doc, 'keydown', Events.onKeyDown, true); // override normal page listeners
  889.     onOff.call(doc, 'keyup', Events.onKeyUp);
  890.     onOff.call(doc, WHEEL_EVENT, Events.onMouseScroll, enable ? {passive: false} : undefined);
  891.   },
  892.  
  893.   trackMouse(e) {
  894.     const cx = ai.cx = e.clientX;
  895.     const cy = ai.cy = e.clientY;
  896.     const r = ai.rect || (ai.rect = Calc.rect());
  897.     ai.rectHovered =
  898.       cx > r.left - 2 && cx < r.right + 2 &&
  899.       cy > r.top - 2 && cy < r.bottom + 2;
  900.   },
  901.  
  902.   zoomInOut(dir) {
  903.     const i = Calc.scaleIndex(dir);
  904.     const n = ai.scales.length;
  905.     if (i >= 0 && i < n)
  906.       ai.scale = ai.scales[i];
  907.     const zo = cfg.zoomOut;
  908.     if (i <= 0 && zo !== 'stay') {
  909.       if (ai.scaleFit < ai.scale * .99) {
  910.         ai.scales.unshift(ai.scale = ai.scaleFit);
  911.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  912.         App.deactivate({wait: true});
  913.         return;
  914.       }
  915.       ai.zoomed = zo !== 'unzoom';
  916.     } else {
  917.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  918.     }
  919.     if (ai.zooming)
  920.       ai.popup.classList.add(`${PREFIX}zooming`);
  921.     Popup.move();
  922.     Bar.updateDetails();
  923.   },
  924. };
  925.  
  926. const Gallery = {
  927.  
  928.   functionParams: ['text', 'doc', 'url', 'm', 'rule', 'node', 'cb'],
  929.  
  930.   makeParser(g) {
  931.     return (
  932.       typeof g === 'function' ? g :
  933.         typeof g === 'string' ? Util.newFunction(...Gallery.functionParams, g) :
  934.           Gallery.defaultParser
  935.     );
  936.   },
  937.  
  938.   findIndex(gUrl) {
  939.     const sel = gUrl.split('#')[1];
  940.     if (!sel)
  941.       return 0;
  942.     if (/^\d+$/.test(sel))
  943.       return parseInt(sel);
  944.     for (let i = ai.gNum; i--;) {
  945.       let {url} = ai.gItems[i];
  946.       if (Array.isArray(url))
  947.         url = url[0];
  948.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  949.         return i;
  950.     }
  951.     return 0;
  952.   },
  953.  
  954.   next(dir) {
  955.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  956.     const item = ai.gItems[ai.gIndex];
  957.     if (Array.isArray(item.url)) {
  958.       ai.urls = item.url.slice(1);
  959.       ai.url = item.url[0];
  960.     } else {
  961.       ai.urls = null;
  962.       ai.url = item.url;
  963.     }
  964.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir || 1)].url)[0];
  965.     App.startSingle();
  966.     Bar.updateName();
  967.   },
  968.  
  969.   nextIndex(dir) {
  970.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  971.   },
  972.  
  973.   defaultParser(text, doc, docUrl, m, rule) {
  974.     const {g} = rule;
  975.     const qEntry = g.entry;
  976.     const qCaption = ensureArray(g.caption);
  977.     const qImage = g.image;
  978.     const qTitle = g.title;
  979.     const fix =
  980.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  981.       (s => s.trim());
  982.     const items = [...$$(qEntry || qImage, doc)]
  983.       .map(processEntry)
  984.       .filter(Boolean);
  985.     items.title = processTitle();
  986.     items.index =
  987.       typeof g.index === 'string' &&
  988.         Remoting.findImageUrl(tryCatch($, g.index, doc), docUrl) ||
  989.       RX_HAS_CODE.test(g.index) &&
  990.         Util.newFunction('items', 'node', g.index)(items, ai.node) ||
  991.       g.index;
  992.     return items;
  993.  
  994.     function processEntry(entry) {
  995.       const item = {};
  996.       try {
  997.         const img = qEntry ? $(qImage, entry) : entry;
  998.         item.url = fix(Remoting.findImageUrl(img, docUrl), true);
  999.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  1000.       } catch (e) {}
  1001.       return item.url && item;
  1002.     }
  1003.  
  1004.     function processCaption(selector) {
  1005.       const el = $(selector, this) ||
  1006.                  $orSelf(selector, this.previousElementSibling) ||
  1007.                  $orSelf(selector, this.nextElementSibling);
  1008.       return el && fix(el.textContent);
  1009.     }
  1010.  
  1011.     function processTitle() {
  1012.       const el = $(qTitle, doc);
  1013.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  1014.     }
  1015.  
  1016.     function $orSelf(selector, el) {
  1017.       if (el && !el.matches(qEntry))
  1018.         return el.matches(selector) ? el : $(selector, el);
  1019.     }
  1020.   },
  1021. };
  1022.  
  1023. const Popup = {
  1024.  
  1025.   async create(src, pageUrl) {
  1026.     Popup.destroy();
  1027.     ai.imageUrl = src;
  1028.     if (!src)
  1029.       return;
  1030.     const myAi = ai;
  1031.     let [xhr, isVideo] = await CspSniffer.check(src);
  1032.     if (ai !== myAi)
  1033.       return;
  1034.     if (xhr)
  1035.       [src, isVideo] = await Remoting.getImage(src, pageUrl, xhr).catch(App.handleError);
  1036.     if (ai !== myAi)
  1037.       return;
  1038.     const p = ai.popup = isVideo ? PopupVideo.create() : $create('img');
  1039.     p.id = `${PREFIX}popup`;
  1040.     p.src = src;
  1041.     p.addEventListener('error', App.handleError);
  1042.     if (ai.zooming)
  1043.       p.addEventListener('transitionend', Popup.onZoom);
  1044.     doc.body.insertBefore(p, ai.bar || undefined);
  1045.     await 0;
  1046.     if (App.checkProgress({start: true}) === false)
  1047.       return;
  1048.     if (p.complete)
  1049.       Popup.onLoad.call(ai.popup);
  1050.     else if (!isVideo)
  1051.       p.addEventListener('load', Popup.onLoad, {once: true});
  1052.   },
  1053.  
  1054.   destroy() {
  1055.     const p = ai.popup;
  1056.     if (!p) return;
  1057.     p.removeEventListener('load', Popup.onLoad);
  1058.     p.removeEventListener('error', App.handleError);
  1059.     if (typeof p.pause === 'function')
  1060.       p.pause();
  1061.     if (!ai.lazyUnload) {
  1062.       if (p.src.startsWith('blob:'))
  1063.         URL.revokeObjectURL(p.src);
  1064.     }
  1065.     p.remove();
  1066.     ai.zoomed = ai.popup = ai.popupLoaded = null;
  1067.   },
  1068.  
  1069.   move() {
  1070.     let x, y;
  1071.     const {cx, cy, extras, view} = ai;
  1072.     const vw = view.w - extras.outw;
  1073.     const vh = view.h - extras.outh;
  1074.     const w0 = ai.scale * ai.nwidth + extras.inw;
  1075.     const h0 = ai.scale * ai.nheight + extras.inh;
  1076.     const isSwapped = ai.rotate % 180;
  1077.     const w = isSwapped ? h0 : w0;
  1078.     const h = isSwapped ? w0 : h0;
  1079.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  1080.       const r = ai.rect;
  1081.       const rx = (r.left + r.right) / 2;
  1082.       const ry = (r.top + r.bottom) / 2;
  1083.       if (vw - r.right - 40 > w || w < r.left - 40) {
  1084.         if (h < vh - 60)
  1085.           y = clamp(ry - h / 2, 30, vh - h - 30);
  1086.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  1087.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  1088.         if (w < vw - 60)
  1089.           x = clamp(rx - w / 2, 30, vw - w - 30);
  1090.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  1091.       }
  1092.     }
  1093.     if (x == null)
  1094.       x = (vw - w) * (vw > w ? .5 : clamp(5 / 3 * (cx / vw - .2), 0, 1));
  1095.     if (y == null)
  1096.       y = (vh - h) * (vh > h ? .5 : clamp(5 / 3 * (cy / vh - .2), 0, 1));
  1097.     const diff = isSwapped ? (w0 - h0) / 2 : 0;
  1098.     x += extras.o - diff;
  1099.     y += extras.o + diff;
  1100.     $css(ai.popup, {
  1101.       transform: `translate(${Math.round(x)}px, ${Math.round(y)}px) ` +
  1102.                  `rotate(${ai.rotate || 0}deg) ` +
  1103.                  `scale(${ai.flipX ? -1 : 1},${ai.flipY ? -1 : 1})`,
  1104.       width: `${Math.round(w0)}px`,
  1105.       height: `${Math.round(h0)}px`,
  1106.     });
  1107.   },
  1108.  
  1109.   onLoad() {
  1110.     if (this === ai.popup) {
  1111.       this.setAttribute('loaded', '');
  1112.       ai.popupLoaded = true;
  1113.       Status.set('-loading');
  1114.       if (ai.preloadUrl) {
  1115.         $create('img', {src: ai.preloadUrl});
  1116.         ai.preloadUrl = null;
  1117.       }
  1118.     }
  1119.   },
  1120.  
  1121.   onZoom() {
  1122.     this.classList.remove(`${PREFIX}zooming`);
  1123.   },
  1124. };
  1125.  
  1126. const PopupVideo = {
  1127.   create() {
  1128.     ai.bufBar = false;
  1129.     ai.bufStart = now();
  1130.     const shouldMute = new AudioContext().state === 'suspended';
  1131.     return $create('video', {
  1132.       autoplay: true,
  1133.       controls: shouldMute,
  1134.       muted: shouldMute,
  1135.       loop: true,
  1136.       volume: clamp(+GM_getValue('volume') || .5, 0, 1),
  1137.       onprogress: PopupVideo.progress,
  1138.       oncanplaythrough: PopupVideo.progressDone,
  1139.       onvolumechange: PopupVideo.rememberVolume,
  1140.     });
  1141.   },
  1142.  
  1143.   progress() {
  1144.     const {duration} = this;
  1145.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1146.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1147.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1148.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1149.     }
  1150.   },
  1151.  
  1152.   progressDone() {
  1153.     this.onprogress = this.oncanplaythrough = null;
  1154.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1155.       Bar.set(false);
  1156.     Popup.onLoad.call(this);
  1157.   },
  1158.  
  1159.   rememberVolume() {
  1160.     GM_setValue('volume', this.volume);
  1161.   },
  1162. };
  1163.  
  1164. const Ruler = {
  1165. /*
  1166.  'u' works only with URLs so it's ignored if 'html' is true
  1167.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1168.    |foo = url or text must start with foo
  1169.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1170.        when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1171.  'r' is checked only if 'u' matches first
  1172. */
  1173.   init() {
  1174.     const errors = new Map();
  1175.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1176.     for (const rule of errors.keys())
  1177.       App.handleError('Invalid custom host rule:', rule);
  1178.  
  1179.     // rules that disable previewing
  1180.     const disablers = [
  1181.       dotDomain.endsWith('.stackoverflow.com') && {
  1182.         e: '.post-tag, .post-tag img',
  1183.         s: '',
  1184.       },
  1185.       {
  1186.         u: '||disqus.com/',
  1187.         s: '',
  1188.       },
  1189.     ];
  1190.  
  1191.     // optimization: a rule is created only when on domain
  1192.     const perDomain = [
  1193.       hostname.includes('startpage') && {
  1194.         r: /\boiu=(.+)/,
  1195.         s: '$1',
  1196.         follow: true,
  1197.       },
  1198.       dotDomain.endsWith('.4chan.org') && {
  1199.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1200.         q: '.op .fileText a',
  1201.         css: '#post-preview{display:none}',
  1202.       },
  1203.       hostname.includes('amazon.') && {
  1204.         r: /.+?images\/I\/.+?\./,
  1205.         s: m => {
  1206.           const uh = doc.getElementById('universal-hover');
  1207.           return uh ? '' : m[0] + 'jpg';
  1208.         },
  1209.         css: '#zoomWindow{display:none!important;}',
  1210.       },
  1211.       dotDomain.endsWith('.bing.com') && {
  1212.         e: 'a[m*="murl"]',
  1213.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1214.         s: '$1',
  1215.         html: true,
  1216.       },
  1217.       ...dotDomain.endsWith('.deviantart.com') && [{
  1218.         e: '[data-super-full-img] *, img[src*="/th/"]',
  1219.         s: (m, node) =>
  1220.           $propUp(node, 'data-super-full-img') ||
  1221.           (node = node.dataset.embedId && node.nextElementSibling) &&
  1222.           node.dataset.embedId && node.src,
  1223.       }, {
  1224.         e: '.dev-view-deviation img',
  1225.         s: () => [
  1226.           $('.dev-page-download').href,
  1227.           $('.dev-content-full').src,
  1228.         ].filter(Boolean),
  1229.       }, {
  1230.         e: 'a[data-hook=deviation_link]',
  1231.         q: 'link[as=image]',
  1232.       }] || [],
  1233.       dotDomain.endsWith('.dropbox.com') && {
  1234.         r: /(.+?&size_mode)=\d+(.*)/,
  1235.         s: '$1=5$2',
  1236.       },
  1237.       dotDomain.endsWith('.facebook.com') && {
  1238.         e: 'a[href*="ref=hovercard"]',
  1239.         s: (m, node) =>
  1240.           'https://www.facebook.com/photo.php?fbid=' +
  1241.           /\/[0-9]+_([0-9]+)_/.exec($('img', node).src)[1],
  1242.         follow: true,
  1243.       },
  1244.       dotDomain.endsWith('.facebook.com') && {
  1245.         r: /(fbcdn|external).*?(app_full_proxy|safe_image).+?(src|url)=(http.+?)[&"']/,
  1246.         s: (m, node) =>
  1247.           node.parentNode.className.includes('video') && m[4].includes('fbcdn') ? '' :
  1248.             decodeURIComponent(m[4]),
  1249.         html: true,
  1250.         follow: true,
  1251.       },
  1252.       dotDomain.endsWith('.flickr.com') &&
  1253.       tryCatch(() => unsafeWindow.YUI_config.flickr.api.site_key) && {
  1254.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1255.         s: m => `https://www.flickr.com/services/rest/?${
  1256.           new URLSearchParams({
  1257.             photo_id: m[1],
  1258.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1259.             method: 'flickr.photos.getSizes',
  1260.             format: 'json',
  1261.             nojsoncallback: 1,
  1262.           }).toString()}`,
  1263.         q: text => JSON.parse(text).sizes.size.pop().source,
  1264.       },
  1265.       dotDomain.endsWith('.github.com') && {
  1266.         r: new RegExp([
  1267.           /(avatars.+?&s=)\d+/,
  1268.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1269.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1270.         ].map(rx => rx.source).join('|')),
  1271.         s: m => `https://${
  1272.           m[1] ? `${m[1]}460` :
  1273.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1274.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1275.         }`,
  1276.       },
  1277.       isGoogleImages && {
  1278.         e: 'a[href*="imgres?imgurl="] img',
  1279.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1280.         follow: true,
  1281.       },
  1282.       isGoogleImages && {
  1283.         e: '[data-tbnid] a:not([href])',
  1284.         s: (m, a) => {
  1285.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1286.           new MutationObserver((_, mo) => {
  1287.             mo.disconnect();
  1288.             App.enabled = true;
  1289.             a.alt = a2.innerText;
  1290.             const {left, top} = a.getBoundingClientRect();
  1291.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1292.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1293.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1294.         },
  1295.       },
  1296.       dotDomain.endsWith('.instagram.com') && {
  1297.         e: [
  1298.           'a[href*="/p/"]',
  1299.           'article [role="button"][tabindex="0"], article [role="button"][tabindex="0"] div',
  1300.         ],
  1301.         s: (m, node, rule) => {
  1302.           let data, a, n, img, src;
  1303.           if (location.pathname.startsWith('/p/')) {
  1304.             img = $('img[srcset], video', node.parentNode);
  1305.             if (img && (img.localName === 'video' || parseFloat(img.sizes) > 900))
  1306.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1307.           }
  1308.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1309.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1310.             data = a && tryCatch(this._getEdge, a.pathname.split('/')[2]);
  1311.           }
  1312.           rule.q = data && data.is_video && !data.video_url && 'meta[property="og:video"]';
  1313.           rule.g = a && $('[class*="Carousel"]', a) && rule._g;
  1314.           rule.follow = !data && !rule.g;
  1315.           rule._data = data;
  1316.           rule._img = img;
  1317.           return (
  1318.             !a && !src ? false :
  1319.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1' : ''}` :
  1320.                 data.video_url || data.display_url);
  1321.         },
  1322.         c: (html, doc, node, rule) =>
  1323.           tryCatch(rule._getCaption, rule._data) || (rule._img || 0).alt || '',
  1324.         follow: true,
  1325.         _g(text, doc, url, m, rule) {
  1326.           const media = JSON.parse(text).graphql.shortcode_media;
  1327.           const items = media.edge_sidecar_to_children.edges.map(e => ({
  1328.             url: e.node.video_url || e.node.display_url,
  1329.           }));
  1330.           items.title = tryCatch(rule._getCaption, media) || '';
  1331.           return items;
  1332.         },
  1333.         _getCaption: data => data && data.edge_media_to_caption.edges[0].node.text,
  1334.         _getEdge: shortcode => unsafeWindow._sharedData.entry_data.ProfilePage[0].graphql.user
  1335.             .edge_owner_to_timeline_media.edges.find(e => e.node.shortcode === shortcode).node,
  1336.       },
  1337.       ...dotDomain.endsWith('.reddit.com') && [{
  1338.         u: '||i.reddituploads.com/',
  1339.       }, {
  1340.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1341.         s: (m, node) => $propUp(node, 'data-url'),
  1342.       }, {
  1343.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1344.         s: 'https://i$1',
  1345.       }] || [],
  1346.       dotDomain.endsWith('.tumblr.com') && {
  1347.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1348.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1349.         follow: true,
  1350.       },
  1351.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1352.         e: 'a.media-item, a.js-media-image-link',
  1353.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1354.         follow: true,
  1355.       },
  1356.       dotDomain.endsWith('.twitter.com') && {
  1357.         e: '.grid-tweet > .media-overlay',
  1358.         s: (m, node) => node.previousElementSibling.src,
  1359.         follow: true,
  1360.       },
  1361.     ];
  1362.  
  1363.     const main = [
  1364.       {
  1365.         r: /[/?=](https?%3A%2F%2F[^&]+)/i,
  1366.         s: '$1',
  1367.         follow: true,
  1368.         onerror: 'skip',
  1369.       },
  1370.       {
  1371.         u: [
  1372.           '||500px.com/photo/',
  1373.           '||cl.ly/',
  1374.           '||cweb-pix.com/',
  1375.           '||ibb.co/',
  1376.           '||imgcredit.xyz/image/',
  1377.         ],
  1378.         r: /\.\w+\/.+/,
  1379.         q: 'meta[property="og:image"]',
  1380.       },
  1381.       {
  1382.         u: 'attachment.php',
  1383.         r: /attachment\.php.+attachmentid/,
  1384.       },
  1385.       {
  1386.         u: '||abload.de/image',
  1387.         q: '#image',
  1388.       },
  1389.       {
  1390.         u: '||deviantart.com/art/',
  1391.         s: (m, node) =>
  1392.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1393.             '' :
  1394.             m.input,
  1395.         q: [
  1396.           '#download-button[href*=".jpg"]',
  1397.           '#download-button[href*=".jpeg"]',
  1398.           '#download-button[href*=".gif"]',
  1399.           '#download-button[href*=".png"]',
  1400.           '#gmi-ResViewSizer_fullimg',
  1401.           'img.dev-content-full',
  1402.         ],
  1403.       },
  1404.       {
  1405.         u: '||dropbox.com/s',
  1406.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1407.         q: (text, doc) =>
  1408.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1409.       },
  1410.       {
  1411.         r: /[./]ebay\.[^/]+\/itm\//,
  1412.         q: text =>
  1413.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1414.             .replace(/~~60_\d+/, '~~60_57'),
  1415.       },
  1416.       {
  1417.         u: '||i.ebayimg.com/',
  1418.         s: (m, node) =>
  1419.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1420.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1421.       },
  1422.       {
  1423.         u: [
  1424.           '||fastpic.ru/big',
  1425.           '||fastpic.ru/thumb',
  1426.         ],
  1427.         r: /\/\/(?:i(\d+)\.)?([^/]+\/)(big|thumb|view)\/([^.]+?)\.(\w+)/,
  1428.         s: (m, node, rule) => {
  1429.           const a = node.closest('[href*="fastpic.ru"]');
  1430.           const am = a && rule.r.exec(decodeURIComponent(a.href)) || [];
  1431.           const p = a && am[4].split('/');
  1432.           return `https://i${am[1] || m[1] || am[3] === 'view' && p[0]}.${m[2]}big/${
  1433.             am[3] === 'big' ? am[4] : m[4]}.${am[5] || m[5]}?noht=1`;
  1434.         },
  1435.         xhr: () => 'https://fastpic.ru',
  1436.       },
  1437.       {
  1438.         u: '||fastpic.ru/view/',
  1439.         q: 'img[src*="/big/"]',
  1440.         xhr: true,
  1441.       },
  1442.       {
  1443.         u: '||facebook.com/',
  1444.         r: /photo\.php|[^/]+\/photos\//,
  1445.         s: (m, node) =>
  1446.           node.id === 'fbPhotoImage' ? false :
  1447.             /gradient\.png$/.test(m.input) ? '' :
  1448.               m.input.replace('www.facebook.com', 'mbasic.facebook.com'),
  1449.         q: [
  1450.           'div + span > a:first-child:not([href*="tag_faces"])',
  1451.           'div + span > a[href*="tag_faces"] ~ a',
  1452.         ],
  1453.         rect: '#fbProfileCover',
  1454.       },
  1455.       {
  1456.         u: '||fbcdn.',
  1457.         r: /fbcdn.+?[0-9]+_([0-9]+)_[0-9]+_[a-z]\.(jpg|png)/,
  1458.         s: m =>
  1459.           dotDomain.endsWith('.facebook.com') &&
  1460.           tryCatch(() => unsafeWindow.PhotoSnowlift.getInstance().stream.cache.image[m[1]].url) ||
  1461.           false,
  1462.         manual: true,
  1463.       },
  1464.       {
  1465.         u: ['||fbcdn-', 'fbcdn.net/'],
  1466.         r: /(https?:\/\/(fbcdn-[-\w.]+akamaihd|[-\w.]+?fbcdn)\.net\/[-\w/.]+?)_[a-z]\.(jpg|png)(\?[0-9a-zA-Z0-9=_&]+)?/,
  1467.         s: (m, node) => {
  1468.           if (node.id === 'fbPhotoImage') {
  1469.             const a = $('a.fbPhotosPhotoActionsItem[href$="dl=1"]', doc.body);
  1470.             if (a) return a.href.includes(m.input.match(/[0-9]+_[0-9]+_[0-9]+/)[0]) ? '' : a.href;
  1471.           }
  1472.           if (m[4])
  1473.             return false;
  1474.           const pn = node.parentNode;
  1475.           if (pn.outerHTML.includes('/hovercard/'))
  1476.             return '';
  1477.           if (node.outerHTML.includes('profile') && pn.parentNode.href.includes('/photo'))
  1478.             return false;
  1479.           return m[1].replace(/\/[spc][\d.x]+/g, '').replace('/v/', '/') + '_n.' + m[3];
  1480.         },
  1481.         rect: '.photoWrap',
  1482.       },
  1483.       {
  1484.         u: '||flickr.com/photos/',
  1485.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1486.         s: m =>
  1487.           m.input.indexOf('/sizes/') < 0 ?
  1488.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1489.             false,
  1490.         q: (text, doc) => {
  1491.           const links = $$('.sizes-list a', doc);
  1492.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1493.         },
  1494.         follow: true,
  1495.       },
  1496.       {
  1497.         u: '||flickr.com/photos/',
  1498.         r: /\/sizes\//,
  1499.         q: '#allsizes-photo > img',
  1500.       },
  1501.       {
  1502.         u: '||gfycat.com/',
  1503.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1504.         s: 'https://$1$3',
  1505.         q: [
  1506.           'meta[content$=".webm"]',
  1507.           '#webmsource',
  1508.           'source[src$=".webm"]',
  1509.         ],
  1510.       },
  1511.       {
  1512.         u: [
  1513.           '||googleusercontent.com/proxy',
  1514.           '||googleusercontent.com/gadgets/proxy',
  1515.         ],
  1516.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1517.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1518.       },
  1519.       {
  1520.         u: [
  1521.           '||googleusercontent.com/',
  1522.           '||ggpht.com/',
  1523.         ],
  1524.         s: m => m.input.includes('webcache.') ? '' :
  1525.           m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1526.             .replace(/([&?]sz)?=[-\w]+([&#].*)?/, ''),
  1527.       },
  1528.       {
  1529.         u: '||gravatar.com/',
  1530.         r: /([a-z0-9]{32})/,
  1531.         s: 'https://gravatar.com/avatar/$1?s=200',
  1532.       },
  1533.       {
  1534.         u: '//gyazo.com/',
  1535.         r: /\.com\/\w{32,}/,
  1536.         q: 'meta[name="twitter:image"]',
  1537.         xhr: true,
  1538.       },
  1539.       {
  1540.         u: '||hostingkartinok.com/show-image.php',
  1541.         q: '.image img',
  1542.       },
  1543.       {
  1544.         u: [
  1545.           '||imagecurl.com/images/',
  1546.           '||imagecurl.com/viewer.php',
  1547.         ],
  1548.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1549.         s: 'https://imagecurl.com/images/$1$2$3',
  1550.       },
  1551.       {
  1552.         u: '||imagebam.com/image/',
  1553.         q: 'meta[property="og:image"]',
  1554.         tabfix: true,
  1555.         xhr: hostname.includes('planetsuzy'),
  1556.       },
  1557.       {
  1558.         u: '||imageban.ru/thumbs',
  1559.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1560.         s: '$1out$2/$3/$4',
  1561.       },
  1562.       {
  1563.         u: [
  1564.           '||imageban.ru/show',
  1565.           '||imageban.net/show',
  1566.           '||ibn.im/',
  1567.         ],
  1568.         q: '#img_main',
  1569.       },
  1570.       {
  1571.         u: '||imageshack.us/img',
  1572.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1573.         s: 'https://$2/download/$1/$3$4',
  1574.       },
  1575.       {
  1576.         u: '||imageshack.us/i/',
  1577.         q: '#share-dl',
  1578.       },
  1579.       {
  1580.         u: '||imageteam.org/img',
  1581.         q: 'img[alt="image"]',
  1582.       },
  1583.       {
  1584.         u: [
  1585.           '||imagetwist.com/',
  1586.           '||imageshimage.com/',
  1587.         ],
  1588.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1589.         q: 'img.pic',
  1590.         xhr: true,
  1591.       },
  1592.       {
  1593.         u: '||imageupper.com/i/',
  1594.         q: '#img',
  1595.         xhr: true,
  1596.       },
  1597.       {
  1598.         u: '||imagevenue.com/img.php',
  1599.         q: '#thepic',
  1600.       },
  1601.       {
  1602.         u: '||imagezilla.net/show/',
  1603.         q: '#photo',
  1604.         xhr: true,
  1605.       },
  1606.       {
  1607.         u: [
  1608.           '||images-na.ssl-images-amazon.com/images/',
  1609.           '||media-imdb.com/images/',
  1610.         ],
  1611.         r: /images\/.+?\.jpg/,
  1612.         s: '/V1\\.?_.+?\\.//g',
  1613.       },
  1614.       {
  1615.         u: '||imgbox.com/',
  1616.         r: /\.com\/([a-z0-9]+)$/i,
  1617.         q: '#img',
  1618.         xhr: hostname !== 'imgbox.com',
  1619.       },
  1620.       {
  1621.         u: '||imgclick.net/',
  1622.         r: /\.net\/(\w+)/,
  1623.         q: 'img.pic',
  1624.         xhr: true,
  1625.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1626.       },
  1627.       {
  1628.         u: [
  1629.           '||imgflip.com/i/',
  1630.           '||imgflip.com/gif/',
  1631.         ],
  1632.         r: /\/(i|gif)\/([^/?#]+)/,
  1633.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1634.       },
  1635.       {
  1636.         u: [
  1637.           '||imgur.com/a/',
  1638.           '||imgur.com/gallery/',
  1639.           '||imgur.com/t/',
  1640.         ],
  1641.         g: async (text, doc, url, m, rule, node, cb) => {
  1642.           // simplified extraction of JSON as it occupies only one line
  1643.           if (!/(?:mergeConfig\('gallery',\s*|Imgur\.Album\.getInstance\()[\s\S]*?[,\s{"'](?:image|album)\s*:\s*({[^\r\n]+?}),?[\r\n]/.test(text))
  1644.             return;
  1645.           const info = JSON.parse(RegExp.$1);
  1646.           let images = info.is_album ? info.album_images.images : [info];
  1647.           if (info.num_images > images.length) {
  1648.             const u = `https://imgur.com/ajaxalbums/getimages/${info.hash}/hit.json?all=true`;
  1649.             images = JSON.parse((await Remoting.gmXhr(u)).responseText).data.images;
  1650.           }
  1651.           const items = [];
  1652.           for (const img of images || []) {
  1653.             const u = `https://i.imgur.com/${img.hash}`;
  1654.             items.push({
  1655.               url: img.ext === '.gif' && img.animated !== false ?
  1656.                 [`${u}.webm`, `${u}.mp4`, u] :
  1657.                 u + img.ext,
  1658.               desc: [img.title, img.description].filter(Boolean).join(' - '),
  1659.             });
  1660.           }
  1661.           if (images && info.is_album && !`${items[0].desc || ''}`.includes(info.title))
  1662.             items.title = info.title;
  1663.           cb(items);
  1664.         },
  1665.         css: '.post > .hover { display:none!important; }',
  1666.       },
  1667.       {
  1668.         u: '||imgur.com/',
  1669.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1670.         s: 'gallery',
  1671.         g: (text, doc, url, m) =>
  1672.           m[2].split(',').map(id => ({
  1673.             url: `https://i.${m[1]}${id}.jpg`,
  1674.           })),
  1675.       },
  1676.       {
  1677.         u: '||imgur.com/',
  1678.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.([a-z]+))/i,
  1679.         s: (m, node) => {
  1680.           if (/memegen|random|register|search|signin/.test(m.input))
  1681.             return '';
  1682.           const a = node.closest('a');
  1683.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1684.             return false;
  1685.           const id = m[3].replace(/(.{7})[bhm]$/, '$1');
  1686.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1687.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1688.           return ext === 'webm' ?
  1689.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1690.             u + ext;
  1691.         },
  1692.       },
  1693.       {
  1694.         u: [
  1695.           '||instagr.am/p/',
  1696.           '||instagram.com/p/',
  1697.         ],
  1698.         s: m => m.input.substr(0, m.input.lastIndexOf('/')) + '/?__a=1',
  1699.         q: text => {
  1700.           const m = JSON.parse(text).graphql.shortcode_media;
  1701.           return m.video_url || m.display_url;
  1702.         },
  1703.         rect: 'div.PhotoGridMediaItem',
  1704.         c: text => {
  1705.           const m = JSON.parse(text).graphql.shortcode_media.edge_media_to_caption.edges[0];
  1706.           return m === undefined ? '(no caption)' : m.node.text;
  1707.         },
  1708.       },
  1709.       {
  1710.         u: [
  1711.           '||livememe.com/',
  1712.           '||lvme.me/',
  1713.         ],
  1714.         r: /\.\w+\/([^.]+)$/,
  1715.         s: 'http://i.lvme.me/$1.jpg',
  1716.       },
  1717.       {
  1718.         u: '||lostpic.net/image',
  1719.         q: '.image-viewer-image img',
  1720.       },
  1721.       {
  1722.         u: '||makeameme.org/meme/',
  1723.         r: /\/meme\/([^/?#]+)/,
  1724.         s: 'https://media.makeameme.org/created/$1.jpg',
  1725.       },
  1726.       {
  1727.         u: '||photobucket.com/',
  1728.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  1729.         s: 'https://i$1$3',
  1730.         xhr: !dotDomain.endsWith('.photobucket.com'),
  1731.       },
  1732.       {
  1733.         u: '||piccy.info/view3/',
  1734.         r: /(.+?\/view3)\/(.*)\//,
  1735.         s: '$1/$2/orig/',
  1736.         q: '#mainim',
  1737.       },
  1738.       {
  1739.         u: '||pimpandhost.com/image/',
  1740.         r: /(.+?\/image\/[0-9]+)/,
  1741.         s: '$1?size=original',
  1742.         q: 'img.original',
  1743.       },
  1744.       {
  1745.         u: [
  1746.           '||pixroute.com/',
  1747.           '||imgspice.com/',
  1748.         ],
  1749.         r: /\.html$/,
  1750.         q: 'img[id]',
  1751.         xhr: true,
  1752.       },
  1753.       {
  1754.         u: '||postima',
  1755.         r: /postima?ge?\.org\/image\/\w+/,
  1756.         q: [
  1757.           'a[href*="dl="]',
  1758.           '#main-image',
  1759.         ],
  1760.       },
  1761.       {
  1762.         u: [
  1763.           '||prntscr.com/',
  1764.           '||prnt.sc/',
  1765.         ],
  1766.         r: /\.\w+\/.+/,
  1767.         q: 'meta[property="og:image"]',
  1768.         xhr: true,
  1769.       },
  1770.       {
  1771.         u: '||radikal.ru/',
  1772.         r: /\.ru\/(fp|.+\.html)/,
  1773.         q: text => text.match(/http:\/\/[a-z0-9]+\.radikal\.ru[a-z0-9/]+\.(jpg|gif|png)/i)[0],
  1774.       },
  1775.       {
  1776.         u: '||tumblr.com',
  1777.         r: /_500\.jpg/,
  1778.         s: ['/_500/_1280/', ''],
  1779.       },
  1780.       {
  1781.         u: '||twimg.com/',
  1782.         r: /\/profile_images/i,
  1783.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  1784.       },
  1785.       {
  1786.         u: '||twimg.com/media/',
  1787.         r: /.+?format=(jpe?g|png|gif)/i,
  1788.         s: '$0&name=large',
  1789.       },
  1790.       {
  1791.         u: '||twimg.com/1/proxy',
  1792.         r: /t=([^&_]+)/i,
  1793.         s: m => atob(m[1]).match(/http.+/),
  1794.       },
  1795.       {
  1796.         u: '||pic.twitter.com/',
  1797.         r: /\.com\/[a-z0-9]+/i,
  1798.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  1799.         follow: true,
  1800.       },
  1801.       {
  1802.         u: '||twitpic.com/',
  1803.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  1804.         s: 'https://twitpic.com/show/large/$2',
  1805.       },
  1806.       {
  1807.         u: '||upix.me/files',
  1808.         s: '/#//',
  1809.       },
  1810.       {
  1811.         u: '||wiki',
  1812.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  1813.         s: '/\\/thumb(?=\\/)|' +
  1814.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  1815.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  1816.         xhr: !hostname.includes('wiki'),
  1817.       },
  1818.       {
  1819.         u: '||ytimg.com/vi/',
  1820.         r: /(.+?\/vi\/[^/]+)/,
  1821.         s: '$1/0.jpg',
  1822.         rect: '.video-list-item',
  1823.       },
  1824.       {
  1825.         u: '/viewer.php?file=',
  1826.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  1827.         s: '$1/images/$2',
  1828.         xhr: true,
  1829.       },
  1830.       {
  1831.         u: '/thumb_',
  1832.         r: /\/albums.+\/thumb_[^/]/,
  1833.         s: '/thumb_//',
  1834.       },
  1835.       {
  1836.         u: [
  1837.           '.th.jp',
  1838.           '.th.gif',
  1839.           '.th.png',
  1840.         ],
  1841.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  1842.         s: '$1$2',
  1843.         follow: true,
  1844.       },
  1845.       {
  1846.         r: /^[^?]+?\.(bmp|jpe?g?|gif|mp4|png|svg|web[mp])($|\?)/i,
  1847.       },
  1848.     ];
  1849.  
  1850.     /** @type mpiv.HostRule[] */
  1851.     Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean);
  1852.   },
  1853.  
  1854.   format(rule, {expand} = {}) {
  1855.     const s = JSON.stringify(rule, null, ' ');
  1856.     return expand ?
  1857.       /* {"a": ...,
  1858.           "b": ...,
  1859.           "c": ...
  1860.          } */
  1861.       s.replace(/^{\s+/g, '{') :
  1862.       /* {"a": ..., "b": ..., "c": ...} */
  1863.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  1864.   },
  1865.  
  1866.   /** @returns mpiv.HostRule | Error | false | undefined */
  1867.   parse(rule) {
  1868.     const isBatchOp = this instanceof Map;
  1869.     try {
  1870.       if (typeof rule === 'string')
  1871.         rule = JSON.parse(rule);
  1872.       if ('d' in rule && typeof rule.d !== 'string')
  1873.         rule.d = undefined;
  1874.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  1875.         return false;
  1876.       const compileTo = isBatchOp ? rule : {};
  1877.       if (rule.r)
  1878.         compileTo.r = new RegExp(rule.r, 'i');
  1879.       if (RX_HAS_CODE.test(rule.s))
  1880.         compileTo.s = Util.newFunction('m', 'node', 'rule', rule.s);
  1881.       if (RX_HAS_CODE.test(rule.q))
  1882.         compileTo.q = Util.newFunction('text', 'doc', 'node', 'rule', rule.q);
  1883.       if (RX_HAS_CODE.test(rule.c))
  1884.         compileTo.c = Util.newFunction('text', 'doc', 'node', 'rule', rule.c);
  1885.       return rule;
  1886.     } catch (e) {
  1887.       if (!e.message.includes('unsafe-eval'))
  1888.         if (isBatchOp) {
  1889.           this.set(rule, e);
  1890.         } else {
  1891.           return e;
  1892.         }
  1893.     }
  1894.   },
  1895.  
  1896.   runC(text, doc = document) {
  1897.     const fn = Ruler.runCHandler[typeof ai.rule.c] || Ruler.runCHandler.default;
  1898.     ai.caption = fn(text, doc);
  1899.   },
  1900.  
  1901.   runCHandler: {
  1902.     function: (text, doc) =>
  1903.       ai.rule.c(text || doc.documentElement.outerHTML, doc, ai.node, ai.rule),
  1904.     string: (text, doc) => {
  1905.       const el = $many(ai.rule.c, doc);
  1906.       return !el ? '' :
  1907.         el.getAttribute('content') ||
  1908.         el.getAttribute('title') ||
  1909.         el.textContent;
  1910.     },
  1911.     default: () =>
  1912.       (ai.tooltip || 0).text ||
  1913.       ai.node.alt ||
  1914.       $propUp(ai.node, 'title') ||
  1915.       Remoting.getFileName(
  1916.         ai.node.tagName === (ai.popup || 0).tagName
  1917.           ? ai.url
  1918.           : ai.node.src || $propUp(ai.node, 'href')),
  1919.   },
  1920.  
  1921.   runQ(text, doc, docUrl) {
  1922.     let url;
  1923.     if (typeof ai.rule.q === 'function') {
  1924.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  1925.       if (Array.isArray(url)) {
  1926.         ai.urls = url.slice(1);
  1927.         url = url[0];
  1928.       }
  1929.     } else {
  1930.       const el = $many(ai.rule.q, doc);
  1931.       url = Remoting.findImageUrl(el, docUrl);
  1932.     }
  1933.     return url;
  1934.   },
  1935.  
  1936.   runS(node, rule, m) {
  1937.     let urls = [];
  1938.     for (const s of ensureArray(rule.s))
  1939.       urls.push(
  1940.         typeof s === 'string' ? Util.decodeUrl(Ruler.substituteSingle(s, m)) :
  1941.           typeof s === 'function' ? s(m, node, rule) :
  1942.             s);
  1943.     if (rule.q && urls.length > 1) {
  1944.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  1945.       return {skipRule: true};
  1946.     }
  1947.     if (Array.isArray(urls[0]))
  1948.       urls = urls[0];
  1949.     // `false` returned by "s" property means "skip this rule"
  1950.     // any other falsy value (like say "") means "stop all rules"
  1951.     return urls[0] === false ? {skipRule: true} : urls.map(Util.decodeUrl);
  1952.   },
  1953.  
  1954.   substituteSingle(s, m) {
  1955.     if (!m) return s;
  1956.     if (s.startsWith('/') && !s.startsWith('//')) {
  1957.       const mid = s.search(/[^\\]\//) + 1;
  1958.       const end = s.lastIndexOf('/');
  1959.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  1960.       return m.input.replace(re, s.slice(mid + 1, end));
  1961.     }
  1962.     if (m.length && s.includes('$')) {
  1963.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  1964.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  1965.         for (let i = maxLength; i >= 0; i--) {
  1966.           const part = num.slice(0, i) | 0;
  1967.           if (part < m.length)
  1968.             return (m[part] || '') + num.slice(i);
  1969.         }
  1970.         return text;
  1971.       });
  1972.     }
  1973.     return s;
  1974.   },
  1975. };
  1976.  
  1977. const RuleMatcher = {
  1978.  
  1979.   /** @returns ?mpiv.RuleMatchInfo */
  1980.   findForLink(a) {
  1981.     let url =
  1982.       a.getAttribute('data-expanded-url') ||
  1983.       a.getAttribute('data-full-url') ||
  1984.       a.getAttribute('data-url') ||
  1985.       a.href;
  1986.     if (url.startsWith('data:'))
  1987.       url = false;
  1988.     else if (url.includes('//t.co/'))
  1989.       url = 'http://' + a.textContent;
  1990.     return RuleMatcher.find(url, a);
  1991.   },
  1992.  
  1993.   /** @returns ?mpiv.RuleMatchInfo */
  1994.   find(url, node, {noHtml, skipRules} = {}) {
  1995.     const tn = node.tagName;
  1996.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  1997.     const isPicOrLink = isPic || tn === 'A';
  1998.     let m, html, urls;
  1999.     for (const rule of Ruler.rules) {
  2000.       const {e} = rule;
  2001.       if (e && !node.matches(e) || skipRules && skipRules.includes(rule))
  2002.         continue;
  2003.       const {r, u} = rule;
  2004.       if (r && !noHtml && rule.html && (isPicOrLink || e))
  2005.         m = r.exec(html || (html = node.outerHTML));
  2006.       else if (r || u)
  2007.         m = url && RuleMatcher.makeUrlMatch(url, node, rule, r, u);
  2008.       else
  2009.         m = url ? RuleMatcher.makeDummyMatch(url) : [];
  2010.       if (!m)
  2011.         continue;
  2012.       const {s} = rule;
  2013.       let hasS = s !== undefined;
  2014.       // a rule with follow:true for the currently hovered IMG produced a URL,
  2015.       // but we'll only allow it to match rules without 's' in the nested find call
  2016.       if (isPic && !hasS && !skipRules)
  2017.         continue;
  2018.       if (s === '')
  2019.         return {};
  2020.       hasS &= s !== 'gallery';
  2021.       urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  2022.       if (!urls.skipRule) {
  2023.         const url = urls[0];
  2024.         return !url ? {} :
  2025.           hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule) &&
  2026.             RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]}) ||
  2027.             RuleMatcher.makeInfo(urls, node, rule, m);
  2028.       }
  2029.     }
  2030.   },
  2031.  
  2032.   makeUrlMatch(url, node, rule, r, u) {
  2033.     let m;
  2034.     if (u) {
  2035.       u = rule._u || (rule._u = UrlMatcher(u));
  2036.       m = u.fn.call(u.this, url) && (r || RuleMatcher.makeDummyMatch(url));
  2037.     }
  2038.     return (m || !u) && r ? r.exec(url) : m;
  2039.   },
  2040.  
  2041.   makeDummyMatch(url) {
  2042.     const m = [url];
  2043.     m.index = 0;
  2044.     m.input = url;
  2045.     return m;
  2046.   },
  2047.  
  2048.   /** @returns mpiv.RuleMatchInfo */
  2049.   makeInfo(urls, node, rule, m) {
  2050.     const url = (`${urls[0]}`.startsWith('//') ? location.protocol : '') + urls[0];
  2051.     const xhr = cfg.xhr && rule.xhr;
  2052.     return {
  2053.       node,
  2054.       rule,
  2055.       url,
  2056.       urls: urls.length > 1 ? urls.slice(1) : null,
  2057.       match: m,
  2058.       gallery: rule.g && Gallery.makeParser(rule.g),
  2059.       post: typeof rule.post === 'function' ? rule.post(m) : rule.post,
  2060.       xhr: xhr != null ? xhr : isSecureContext && !url.startsWith(location.protocol),
  2061.     };
  2062.   },
  2063.  
  2064.   isFollowableUrl(url, rule) {
  2065.     const f = rule.follow;
  2066.     return typeof f === 'function' ? f(url) : f;
  2067.   },
  2068. };
  2069.  
  2070. const Remoting = {
  2071.  
  2072.   gmXhr(url, opts = {}) {
  2073.     if (ai.req)
  2074.       tryCatch.call(ai.req, ai.req.abort);
  2075.     return new Promise((resolve, reject) => {
  2076.       ai.req = GM_xmlhttpRequest({
  2077.         url,
  2078.         method: 'GET',
  2079.         anonymous: (ai.rule || {}).anonymous,
  2080.         timeout: 30e3,
  2081.         ...opts,
  2082.         onload: done,
  2083.         onerror: done,
  2084.         ontimeout() {
  2085.           ai.req = null;
  2086.           reject(`Timeout fetching ${url}`);
  2087.         },
  2088.       });
  2089.       function done(r) {
  2090.         ai.req = null;
  2091.         if (r.status < 400 && !r.error)
  2092.           resolve(r);
  2093.         else
  2094.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2095.       }
  2096.     });
  2097.   },
  2098.  
  2099.   async getDoc(url) {
  2100.     const r = await (!ai.post ?
  2101.       Remoting.gmXhr(url) :
  2102.       Remoting.gmXhr(url, {
  2103.         method: 'POST',
  2104.         data: ai.post,
  2105.         headers: {
  2106.           'Content-Type': 'application/x-www-form-urlencoded',
  2107.           'Referer': url,
  2108.         },
  2109.       }));
  2110.     r.doc = new DOMParser().parseFromString(r.responseText, 'text/html');
  2111.     return r;
  2112.   },
  2113.  
  2114.   async getImage(url, pageUrl, xhr = ai.xhr) {
  2115.     ai.bufBar = false;
  2116.     ai.bufStart = now();
  2117.     const response = await Remoting.gmXhr(url, {
  2118.       responseType: 'blob',
  2119.       headers: {
  2120.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2121.         Referer: pageUrl || (typeof xhr === 'function' ? xhr() : url),
  2122.       },
  2123.       onprogress: Remoting.getImageProgress,
  2124.     });
  2125.     Bar.set(false);
  2126.     const type = Remoting.guessMimeType(response);
  2127.     let b = response.response;
  2128.     if (!b) throw 'Empty response';
  2129.     if (b.type !== type)
  2130.       b = b.slice(0, b.size, type);
  2131.     return [
  2132.       xhr === 'blob' ? URL.createObjectURL(b) : await Remoting.blobToDataUrl(b),
  2133.       type.startsWith('video'),
  2134.     ];
  2135.   },
  2136.  
  2137.   getImageProgress(e) {
  2138.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2139.       ai.bufBar = true;
  2140.     if (ai.bufBar) {
  2141.       const pct = e.loaded / e.total * 100 | 0;
  2142.       const size = e.total / 1024 | 0;
  2143.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2144.     }
  2145.   },
  2146.  
  2147.   async findRedirect() {
  2148.     try {
  2149.       const {finalUrl} = await Remoting.gmXhr(ai.url, {
  2150.         method: 'HEAD',
  2151.         headers: {
  2152.           'Referer': location.href.split('#', 1)[0],
  2153.         },
  2154.       });
  2155.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2156.       if (!info || !info.url)
  2157.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2158.       Object.assign(ai, info);
  2159.       App.startSingle();
  2160.     } catch (e) {
  2161.       App.handleError(e);
  2162.     }
  2163.   },
  2164.  
  2165.   async saveFile() {
  2166.     const url = ai.popup.src || ai.popup.currentSrc;
  2167.     let name = Remoting.getFileName(ai.imageUrl || url);
  2168.     if (!name.includes('.'))
  2169.       name += '.jpg';
  2170.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2171.       $create('a', {href: url, download: name})
  2172.         .dispatchEvent(new MouseEvent('click'));
  2173.     } else {
  2174.       Status.set('+loading');
  2175.       const onload = () => Status.set('-loading');
  2176.       GM_download({
  2177.         url,
  2178.         name,
  2179.         headers: {Referer: url},
  2180.         onerror: e => {
  2181.           Bar.set(`Could not download ${name}: ${e.error || e.message || e}.`, 'error');
  2182.           onload();
  2183.         },
  2184.         onprogress: Remoting.getImageProgress,
  2185.         onload,
  2186.       });
  2187.     }
  2188.   },
  2189.  
  2190.   getFileName(url) {
  2191.     return decodeURIComponent(url).split('/').pop().replace(/[:#?].*/, '');
  2192.   },
  2193.  
  2194.   blobToDataUrl(blob) {
  2195.     return new Promise((resolve, reject) => {
  2196.       const fr = new FileReader();
  2197.       fr.onload = () => resolve(fr.result);
  2198.       fr.onerror = reject;
  2199.       fr.readAsDataURL(blob);
  2200.     });
  2201.   },
  2202.  
  2203.   guessMimeType({responseHeaders, finalUrl}) {
  2204.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2205.         !RegExp.$1.includes('text/plain'))
  2206.       return RegExp.$1;
  2207.     const ext = /\.([a-z0-9]+?)($|\?|#)/i.exec(finalUrl) ? RegExp.$1 : 'jpg';
  2208.     switch (ext.toLowerCase()) {
  2209.       case 'bmp': return 'image/bmp';
  2210.       case 'gif': return 'image/gif';
  2211.       case 'jpe': return 'image/jpeg';
  2212.       case 'jpeg': return 'image/jpeg';
  2213.       case 'jpg': return 'image/jpeg';
  2214.       case 'mp4': return 'video/mp4';
  2215.       case 'png': return 'image/png';
  2216.       case 'svg': return 'image/svg+xml';
  2217.       case 'tif': return 'image/tiff';
  2218.       case 'tiff': return 'image/tiff';
  2219.       case 'webm': return 'video/webm';
  2220.       default: return 'application/octet-stream';
  2221.     }
  2222.   },
  2223.  
  2224.   findImageUrl(n, url) {
  2225.     if (!n) return;
  2226.     let html;
  2227.     const path =
  2228.       n.getAttribute('src') ||
  2229.       n.getAttribute('data-m4v') ||
  2230.       n.getAttribute('href') ||
  2231.       n.getAttribute('content') ||
  2232.       (html = n.outerHTML).includes('http') &&
  2233.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2234.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2235.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2236.   },
  2237. };
  2238.  
  2239. const Status = {
  2240.  
  2241.   set(status) {
  2242.     if (!status && !cfg.globalStatus) {
  2243.       ai.node && ai.node.removeAttribute(STATUS_ATTR);
  2244.       return;
  2245.     }
  2246.     const prefix = cfg.globalStatus ? PREFIX : '';
  2247.     const action = status && /^[+-]/.test(status) && status[0];
  2248.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2249.     const el = cfg.globalStatus ? doc.documentElement :
  2250.       name === 'edge' ? ai.popup :
  2251.         ai.node;
  2252.     if (!el) return;
  2253.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2254.     const oldValue = (el.getAttribute(attr) || '').trim();
  2255.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2256.     switch (action) {
  2257.       case '-':
  2258.         cls.delete(name);
  2259.         break;
  2260.       case false:
  2261.         for (const c of cls)
  2262.           if (c.startsWith(prefix) && c !== name)
  2263.             cls.delete(c);
  2264.       // fallthrough to +
  2265.       case '+':
  2266.         if (name)
  2267.           cls.add(name);
  2268.         break;
  2269.     }
  2270.     const newValue = [...cls].join(' ');
  2271.     if (newValue !== oldValue)
  2272.       el.setAttribute(attr, newValue);
  2273.   },
  2274.  
  2275.   loading(force) {
  2276.     if (!force) {
  2277.       clearTimeout(ai.timerStatus);
  2278.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2279.     } else if (!ai.popupLoaded) {
  2280.       Status.set('+loading');
  2281.     }
  2282.   },
  2283. };
  2284.  
  2285. const UrlMatcher = (() => {
  2286.   // string-to-regexp escaped chars
  2287.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2288.   // rx for '^' symbol in simple url match
  2289.   const RX_SEP = /[^\w%._-]/y;
  2290.   const RXS_SEP = RX_SEP.source;
  2291.   return match => {
  2292.     const results = [];
  2293.     for (const s of ensureArray(match)) {
  2294.       const pinDomain = s.startsWith('||');
  2295.       const pinStart = !pinDomain && s.startsWith('|');
  2296.       const endSep = s.endsWith('^');
  2297.       let fn;
  2298.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2299.       if (needle.includes('^')) {
  2300.         const plain = needle.split('^').reduce(getLongest);
  2301.         const rx = new RegExp(
  2302.           (pinStart ? '^' : '') +
  2303.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2304.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2305.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2306.         needle = [plain, rx];
  2307.         fn = regexp;
  2308.       } else if (pinStart) {
  2309.         fn = endSep ? equals : starts;
  2310.       } else if (pinDomain) {
  2311.         const slashPos = needle.indexOf('/');
  2312.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2313.         needle = [needle, domain, slashPos > 0, endSep];
  2314.         fn = startsDomainPrescreen;
  2315.       } else if (endSep) {
  2316.         fn = ends;
  2317.       } else {
  2318.         fn = has;
  2319.       }
  2320.       results.push({fn, this: needle});
  2321.     }
  2322.     return results.length > 1 ?
  2323.       {fn: checkArray, this: results} :
  2324.       results[0];
  2325.   };
  2326.   function checkArray(s) {
  2327.     return this.some(checkArrayItem, s);
  2328.   }
  2329.   function checkArrayItem(item) {
  2330.     return item.fn.call(item.this, this);
  2331.   }
  2332.   function ends(s) {
  2333.     return s.endsWith(this) || (
  2334.       s.length > this.length &&
  2335.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2336.       endsWithSep(s));
  2337.   }
  2338.   function endsWithSep(s, pos = s.length - 1) {
  2339.     RX_SEP.lastIndex = pos;
  2340.     return RX_SEP.test(s);
  2341.   }
  2342.   function equals(s) {
  2343.     return s.startsWith(this) && (
  2344.       s.length === this.length ||
  2345.       s.length === this.length + 1 && endsWithSep(s));
  2346.   }
  2347.   function getLongest(max, part) {
  2348.     return part.length > max.length ? part : max;
  2349.   }
  2350.   function has(s) {
  2351.     return s.includes(this);
  2352.   }
  2353.   function regexp(s) {
  2354.     return s.includes(this[0]) && this[1].test(s);
  2355.   }
  2356.   function starts(s) {
  2357.     return s.startsWith(this);
  2358.   }
  2359.   function startsDomainPrescreen(url) {
  2360.     return url.includes(this[0]) && startsDomain.call(this, url);
  2361.   }
  2362.   function startsDomain(url) {
  2363.     let hostStart = url.indexOf('//');
  2364.     if (hostStart && url[hostStart - 1] !== ':')
  2365.       return;
  2366.     hostStart = hostStart < 0 ? 0 : hostStart + 2;
  2367.     const host = url.slice(hostStart, (url.indexOf('/', hostStart) + 1 || url.length + 1) - 1);
  2368.     const [needle, domain, pinDomainEnd, endSep] = this;
  2369.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2370.     for (; ; start++) {
  2371.       start = host.indexOf(domain, start);
  2372.       if (start < 0)
  2373.         return;
  2374.       if (!start || host[start - 1] === '.')
  2375.         break;
  2376.     }
  2377.     start += hostStart;
  2378.     if (url.lastIndexOf(needle, start) !== start)
  2379.       return;
  2380.     const end = start + needle.length;
  2381.     return !endSep || end === host.length || end === url.length || endsWithSep(url, end);
  2382.   }
  2383. })();
  2384.  
  2385. const Util = {
  2386.  
  2387.   addStyle(name, css) {
  2388.     const id = `${PREFIX}style:${name}`;
  2389.     const el = doc.getElementById(id) ||
  2390.                css && $create('style', {id});
  2391.     if (!el) return;
  2392.     if (el.textContent !== css)
  2393.       el.textContent = css;
  2394.     if (el.parentElement !== doc.head)
  2395.       doc.head.appendChild(el);
  2396.     return el;
  2397.   },
  2398.  
  2399.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2400.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2401.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2402.   },
  2403.  
  2404.   decodeHtmlEntities(s) {
  2405.     return s
  2406.       .replace(/&quot;/g, '"')
  2407.       .replace(/&apos;/g, '\'')
  2408.       .replace(/&lt;/g, '<')
  2409.       .replace(/&gt;/g, '>')
  2410.       .replace(/&amp;/g, '&');
  2411.   },
  2412.  
  2413.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2414.   decodeUrl(url) {
  2415.     if (!url) return url;
  2416.     const iPct = url.indexOf('%');
  2417.     const iColon = url.indexOf(':');
  2418.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2419.       decodeURIComponent(url) :
  2420.       url;
  2421.   },
  2422.  
  2423.   deepEqual(a, b) {
  2424.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2425.       return a === b;
  2426.     if (Array.isArray(a)) {
  2427.       return Array.isArray(b) &&
  2428.         a.length === b.length &&
  2429.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2430.     }
  2431.     const keys = Object.keys(a);
  2432.     return keys.length === Object.keys(b).length &&
  2433.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2434.   },
  2435.  
  2436.   forceLayout(node) {
  2437.     // eslint-disable-next-line no-unused-expressions
  2438.     node.clientHeight;
  2439.   },
  2440.  
  2441.   formatError(e, rule) {
  2442.     const message =
  2443.       e.message ||
  2444.       e.readyState && 'Request failed.' ||
  2445.       e.type === 'error' && `File can't be displayed.${
  2446.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2447.       }` ||
  2448.       e;
  2449.     const m = [
  2450.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold;color:yellow'],
  2451.       ['', 'font-weight:normal;color:unset'],
  2452.     ];
  2453.     m.push(...[
  2454.       ['Node: %o', ai.node],
  2455.       ['Rule: %o', rule],
  2456.       ai.url && ['URL: %s', ai.url],
  2457.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2458.     ].filter(Boolean));
  2459.     return {
  2460.       message,
  2461.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2462.       consoleArgs: m.map(([, v]) => v),
  2463.     };
  2464.   },
  2465.  
  2466.   isVideoUrl(url) {
  2467.     return url.startsWith('data:video') ||
  2468.            !url.startsWith('data:') && /\.(webm|mp4)($|\?)/.test(url);
  2469.   },
  2470.  
  2471.   newFunction(...args) {
  2472.     try {
  2473.       return App.NOP || new Function(...args);
  2474.     } catch (e) {
  2475.       if (!e.message.includes('unsafe-eval'))
  2476.         throw e;
  2477.       App.NOP = () => {};
  2478.       return App.NOP;
  2479.     }
  2480.   },
  2481.  
  2482.   rel2abs(rel, abs = location.href) {
  2483.     try {
  2484.       return rel.startsWith('data:') ? rel :
  2485.         rel.startsWith('blob:') ? '' : // blobs don't work because they're usually revoked
  2486.           new URL(rel, abs).href;
  2487.     } catch (e) {
  2488.       return rel;
  2489.     }
  2490.   },
  2491.  
  2492.   suppressTooltip() {
  2493.     for (const node of [
  2494.       ai.node.parentNode,
  2495.       ai.node,
  2496.       ai.node.firstElementChild,
  2497.     ]) {
  2498.       const t = (node || 0).title;
  2499.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2500.         ai.tooltip = {node, text: t};
  2501.         node.title = '';
  2502.         break;
  2503.       }
  2504.     }
  2505.   },
  2506.  
  2507.   tabFixUrl() {
  2508.     return ai.rule.tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2509.            navigator.userAgent.includes('Gecko/') &&
  2510.            flattenHtml(`data:text/html;charset=utf8,
  2511.       <style>
  2512.         body {
  2513.           margin: 0;
  2514.           padding: 0;
  2515.           background: #222;
  2516.         }
  2517.         .fit {
  2518.           overflow: hidden
  2519.         }
  2520.         .fit > img {
  2521.           max-width: 100vw;
  2522.           max-height: 100vh;
  2523.         }
  2524.         body > img {
  2525.           margin: auto;
  2526.           position: absolute;
  2527.           left: 0;
  2528.           right: 0;
  2529.           top: 0;
  2530.           bottom: 0;
  2531.         }
  2532.       </style>
  2533.       <body class=fit>
  2534.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2535.       </body>
  2536.     `).replace(/#/g, '%23');
  2537.   },
  2538. };
  2539.  
  2540. function setup({rule} = {}) {
  2541.   if (window !== top) return;
  2542.   if (typeof doc.body.attachShadow !== 'function') {
  2543.     alert('Cannot show MPIV config dialog: the browser is probably too old.\n' +
  2544.           'You can edit the script\'s storage directly in your userscript manager.');
  2545.     return;
  2546.   }
  2547.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2548.   let root = (elConfig || 0).shadowRoot;
  2549.   let {blankRuleElement} = setup;
  2550.   /** @type NodeList */
  2551.   const UI = new Proxy({}, {
  2552.     get(_, id) {
  2553.       return root.getElementById(id);
  2554.     },
  2555.   });
  2556.   if (!rule || !elConfig)
  2557.     init(new Config({save: true}));
  2558.   if (rule)
  2559.     installRule(rule);
  2560.  
  2561.   function closeSetup(event) {
  2562.     const isApply = this.id === 'apply';
  2563.     if (event && (this.id === 'ok' || isApply)) {
  2564.       cfg = collectConfig({save: true, clone: isApply});
  2565.       Ruler.init();
  2566.       if (isApply) {
  2567.         renderCustomScales(cfg);
  2568.         return;
  2569.       }
  2570.     }
  2571.     $remove(elConfig);
  2572.     elConfig = null;
  2573.   }
  2574.  
  2575.   function collectConfig({save, clone} = {}) {
  2576.     let data = {};
  2577.     for (const el of $$('input[id], select[id]', root))
  2578.       data[el.id] = el.type === 'checkbox' ? el.checked :
  2579.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  2580.           el.value || '';
  2581.     Object.assign(data, {
  2582.       css: UI.css.value.trim(),
  2583.       delay: UI.delay.valueAsNumber * 1000,
  2584.       hosts: collectRules(),
  2585.       scale: clamp(UI.scale.valueAsNumber / 100, 0, 1) + 1,
  2586.       scales: UI.scales.value
  2587.         .trim()
  2588.         .split(/[,;]*\s+/)
  2589.         .map(x => x.replace(',', '.'))
  2590.         .filter(x => !isNaN(parseFloat(x))),
  2591.     });
  2592.     if (clone)
  2593.       data = JSON.parse(JSON.stringify(data));
  2594.     return new Config({data, save});
  2595.   }
  2596.  
  2597.   function collectRules() {
  2598.     return [...UI.rules.children]
  2599.       .map(el => [el.value.trim(), el[RULE]])
  2600.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  2601.       .map(([s, json]) => json || s)
  2602.       .filter(Boolean);
  2603.   }
  2604.  
  2605.   function exportSettings(e) {
  2606.     dropEvent(e);
  2607.     const txt = $create('textarea', {
  2608.       style: 'opacity:0; position:absolute',
  2609.       value: JSON.stringify(collectConfig(), null, '  '),
  2610.     });
  2611.     root.appendChild(txt);
  2612.     txt.select();
  2613.     txt.focus();
  2614.     document.execCommand('copy');
  2615.     e.target.focus();
  2616.     txt.remove();
  2617.     UI.exportNotification.hidden = false;
  2618.     setTimeout(() => (UI.exportNotification.hidden = true), 1000);
  2619.   }
  2620.  
  2621.   function importSettings(e) {
  2622.     dropEvent(e);
  2623.     const s = prompt('Paste settings:');
  2624.     if (s)
  2625.       init(new Config({data: s}));
  2626.   }
  2627.  
  2628.   function checkRule({target: el}) {
  2629.     let json, error, title;
  2630.     const prev = el.previousElementSibling;
  2631.     if (el.value) {
  2632.       json = Ruler.parse(el.value);
  2633.       error = json instanceof Error && (json.message || String(json));
  2634.       const invalidDomain = !error && json && typeof json.d === 'string' &&
  2635.         !/^[-.a-z0-9]*$/i.test(json.d);
  2636.       title = [invalidDomain && 'Disabled due to invalid characters in "d"', error]
  2637.         .filter(Boolean).join('\n');
  2638.       el.classList.toggle('invalid-domain', invalidDomain);
  2639.       el.classList.toggle('matching-domain', !!json.d && hostname.includes(json.d));
  2640.       if (!prev)
  2641.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2642.     } else if (prev) {
  2643.       prev.focus();
  2644.       el.remove();
  2645.     }
  2646.     el[RULE] = !error && json;
  2647.     el.title = title;
  2648.     el.setCustomValidity(error || '');
  2649.   }
  2650.  
  2651.   function focusRule({type, target: el, relatedTarget: from}) {
  2652.     if (el === this)
  2653.       return;
  2654.     if (type === 'paste') {
  2655.       setTimeout(() => focusRule.call(this, {target: el}));
  2656.       return;
  2657.     }
  2658.     if (el[RULE])
  2659.       el.value = Ruler.format(el[RULE], {expand: true});
  2660.     const h = clamp(el.scrollHeight, 15, elConfig.clientHeight / 4);
  2661.     if (h > el.offsetHeight)
  2662.       el.style.minHeight = h + 'px';
  2663.     if (!this.contains(from))
  2664.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  2665.     if (from) {
  2666.       from.style.minHeight = '';
  2667.       if (from[RULE])
  2668.         from.value = Ruler.format(from[RULE]);
  2669.     }
  2670.   }
  2671.  
  2672.   function installRule(rule) {
  2673.     const inputs = UI.rules.children;
  2674.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  2675.     if (!el) {
  2676.       el = inputs[0];
  2677.       el[RULE] = rule;
  2678.       el.value = Ruler.format(rule);
  2679.       el.hidden = false;
  2680.       const i = Math.max(0, collectRules().indexOf(rule));
  2681.       inputs[i].insertAdjacentElement('afterend', el);
  2682.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2683.     }
  2684.     const rect = el.getBoundingClientRect();
  2685.     if (rect.bottom < 0 ||
  2686.         rect.bottom > el.parentNode.offsetHeight)
  2687.       el.scrollIntoView();
  2688.     el.classList.add('highlight');
  2689.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  2690.     el.focus();
  2691.   }
  2692.  
  2693.   function init(config) {
  2694.     $remove(elConfig);
  2695.     elConfig = $create('div', {contentEditable: true});
  2696.     root = elConfig.attachShadow({mode: 'open'});
  2697.     root.innerHTML = createConfigHtml();
  2698.     initEvents();
  2699.     renderValues(config);
  2700.     renderCustomScales(config);
  2701.     initRules(config);
  2702.     doc.body.appendChild(elConfig);
  2703.     requestAnimationFrame(() => {
  2704.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elConfig.clientHeight / 4) + 'px';
  2705.     });
  2706.   }
  2707.  
  2708.   function initEvents() {
  2709.     UI.apply.onclick = UI.cancel.onclick = UI.ok.onclick = UI.x.onclick = closeSetup;
  2710.     UI.export.onclick = exportSettings;
  2711.     UI.import.onclick = importSettings;
  2712.     UI.install.onclick = setupRuleInstaller;
  2713.     const {/** @type {HTMLTextAreaElement} */ cssApp} = UI;
  2714.     UI.reveal.onclick = e => {
  2715.       e.preventDefault();
  2716.       cssApp.hidden = !cssApp.hidden;
  2717.       if (!cssApp.hidden) {
  2718.         if (!cssApp.value) {
  2719.           App.updateStyles();
  2720.           cssApp.value = App.globalStyle.trim();
  2721.           cssApp.setSelectionRange(0, 0);
  2722.         }
  2723.         cssApp.focus();
  2724.       }
  2725.     };
  2726.     UI.start.onchange = function () {
  2727.       UI.delay.closest('label').hidden =
  2728.         UI.preload.closest('label').hidden =
  2729.           this.value !== 'auto';
  2730.     };
  2731.     UI.start.onchange();
  2732.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  2733.     // color
  2734.     for (const el of $$('[type="color"]', root)) {
  2735.       el.oninput = colorOnInput;
  2736.       el.elSwatch = el.nextElementSibling;
  2737.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  2738.       el.elOpacity.elColor = el;
  2739.     }
  2740.     function colorOnInput() {
  2741.       this.elSwatch.style.setProperty('--color',
  2742.         Util.color(this.value, this.elOpacity.valueAsNumber));
  2743.     }
  2744.     // range
  2745.     for (const el of $$('[type="range"]', root)) {
  2746.       el.oninput = rangeOnInput;
  2747.       el.onblur = rangeOnBlur;
  2748.       el.addEventListener('focusin', rangeOnFocus);
  2749.     }
  2750.     function rangeOnBlur(e) {
  2751.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  2752.         this.elEdit.onblur(e);
  2753.     }
  2754.     function rangeOnFocus() {
  2755.       if (this.elEdit) return;
  2756.       const {min, max, step, value} = this;
  2757.       this.elEdit = $create('input', {
  2758.         value, min, max, step,
  2759.         className: 'range-edit',
  2760.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  2761.         type: 'number',
  2762.         elRange: this,
  2763.         onblur: rangeEditOnBlur,
  2764.         oninput: rangeEditOnInput,
  2765.       });
  2766.       this.insertAdjacentElement('afterend', this.elEdit);
  2767.     }
  2768.     function rangeOnInput() {
  2769.       this.title = (this.dataset.title || '').replace('$', this.value);
  2770.       if (this.elColor) this.elColor.oninput();
  2771.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  2772.     }
  2773.     // range-edit
  2774.     function rangeEditOnBlur(e) {
  2775.       if (e.relatedTarget !== this.elRange) {
  2776.         this.remove();
  2777.         this.elRange.elEdit = null;
  2778.       }
  2779.     }
  2780.     function rangeEditOnInput() {
  2781.       this.elRange.valueAsNumber = this.valueAsNumber;
  2782.       this.elRange.oninput();
  2783.     }
  2784.     // prevent the main page from interpreting key presses in inputs as hotkeys
  2785.     // which may happen since it sees only the outer <div> in the event |target|
  2786.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  2787.   }
  2788.  
  2789.   function initRules(config) {
  2790.     const rules = UI.rules;
  2791.     rules.addEventListener('input', checkRule);
  2792.     rules.addEventListener('focusin', focusRule);
  2793.     rules.addEventListener('paste', focusRule);
  2794.     blankRuleElement =
  2795.       setup.blankRuleElement =
  2796.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  2797.     for (const rule of config.hosts || []) {
  2798.       const el = blankRuleElement.cloneNode();
  2799.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  2800.       rules.appendChild(el);
  2801.       checkRule({target: el});
  2802.     }
  2803.     const search = UI.search;
  2804.     search.oninput = () => {
  2805.       setup.search = search.value;
  2806.       const s = search.value.toLowerCase();
  2807.       for (const el of rules.children)
  2808.         el.hidden = s && !el.value.toLowerCase().includes(s);
  2809.     };
  2810.     search.value = setup.search || '';
  2811.     if (search.value)
  2812.       search.oninput();
  2813.   }
  2814.  
  2815.   function renderCustomScales(config) {
  2816.     UI.scales.value = config.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  2817.   }
  2818.  
  2819.   function renderValues(config) {
  2820.     for (const el of $$('input[id], select[id], textarea[id]', root))
  2821.       if (el.id in config)
  2822.         el[el.type === 'checkbox' ? 'checked' : 'value'] = config[el.id];
  2823.     for (const el of $$('input[type="range"]', root))
  2824.       el.oninput();
  2825.     for (const el of $$('a[href^="http"]', root))
  2826.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  2827.     UI.delay.valueAsNumber = config.delay / 1000;
  2828.     UI.scale.valueAsNumber = Math.round(clamp(config.scale - 1, 0, 1) * 100);
  2829.   }
  2830. }
  2831.  
  2832. function setupClickedRule(event) {
  2833.   const el = event.target.closest('blockquote, code, pre');
  2834.   const text = el && el.textContent.trim() || '';
  2835.   if (!event.button &&
  2836.       !eventModifiers(event) &&
  2837.       text.startsWith('{') &&
  2838.       text.endsWith('}') &&
  2839.       /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text)) {
  2840.     const rule = tryCatch(JSON.parse, text);
  2841.     if (Object.keys(rule).some(k => /^[degqrsu]$/.test(k))) {
  2842.       dropEvent(event);
  2843.       setup({rule});
  2844.     }
  2845.   }
  2846. }
  2847.  
  2848. async function setupRuleInstaller(e) {
  2849.   dropEvent(e);
  2850.   const parent = this.parentElement;
  2851.   parent.children.installLoading.hidden = false;
  2852.   this.remove();
  2853.   let rules;
  2854.  
  2855.   try {
  2856.     rules = extractRules(await Remoting.getDoc(this.href));
  2857.     const selector = $create('select', {
  2858.       size: 8,
  2859.       style: 'width: 100%',
  2860.       ondblclick: e => e.target !== selector && maybeSetup(e),
  2861.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  2862.     });
  2863.     selector.append(...rules.map(renderRule));
  2864.     selector.selectedIndex = findMatchingRuleIndex();
  2865.     // remove "name" since the installed rules don't need it
  2866.     for (const r of rules)
  2867.       delete r.name;
  2868.     parent.children.installLoading.remove();
  2869.     parent.children.installHint.hidden = false;
  2870.     parent.appendChild(selector);
  2871.     requestAnimationFrame(() => {
  2872.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  2873.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  2874.       selector.focus();
  2875.     });
  2876.   } catch (e) {
  2877.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  2878.   }
  2879.  
  2880.   function extractRules({doc}) {
  2881.     const code = $('script', doc).textContent;
  2882.     // sort by name
  2883.     return JSON.parse(code.match(/var\s+rules\s*=\s*(\[.+]);?[\r\n]/)[1])
  2884.       .filter(r => !r.d || hostname.includes(r.d))
  2885.       .sort((a, b) =>
  2886.         (a = a.name.toLowerCase()) < (b = b.name.toLowerCase()) ? -1 :
  2887.           a > b ? 1 :
  2888.             0);
  2889.   }
  2890.  
  2891.   function findMatchingRuleIndex() {
  2892.     const dottedHost = `.${hostname}.`;
  2893.     const weighParts = (n, part) => n + (dottedHost.includes(`.${part}.`) && part.length);
  2894.     const weighName = name => name.toLowerCase().split(/[^a-z\d.-]+/i).reduce(weighParts, 0);
  2895.     return rules.reduce((max, {d, name}, index) => {
  2896.       const count = !!(d && hostname.includes(d)) * 10 + weighName(name);
  2897.       return count > max.count ? {count, index} : max;
  2898.     }, {count: 0, index: 0}).index;
  2899.   }
  2900.  
  2901.   function renderRule(r) {
  2902.     const {name, ...copy} = r;
  2903.     return $create('option', {
  2904.       textContent: name,
  2905.       title: Ruler.format(copy, {expand: true})
  2906.         .replace(/^{|\s*}$/g, '')
  2907.         .split('\n')
  2908.         .slice(0, 12)
  2909.         .map(renderTitleLine)
  2910.         .filter(Boolean)
  2911.         .join('\n'),
  2912.     });
  2913.   }
  2914.  
  2915.   function renderTitleLine(line, i, arr) {
  2916.     return (
  2917.       // show ... on 10th line if there are more lines
  2918.       i === 9 && arr.length > 10 ? '...' :
  2919.         i > 10 ? '' :
  2920.           // truncate to 100 chars
  2921.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  2922.             // strip the leading space
  2923.             .replace(/^\s/, ''));
  2924.   }
  2925.  
  2926.   function maybeSetup(e) {
  2927.     if (!eventModifiers(e))
  2928.       setup({rule: rules[e.currentTarget.selectedIndex]});
  2929.   }
  2930. }
  2931.  
  2932. function createConfigHtml() {
  2933.   const MPIV_BASE_URL = 'https://w9p.co/userscripts/mpiv/';
  2934.   const scalesHint = 'Leave it empty and click Apply or Save to restore the default values.';
  2935.   const trimLeft = s => s.trim().replace(/\n\s+/g, '\r');
  2936.   return flattenHtml(`
  2937. <style>
  2938.   :host {
  2939.     all: initial !important;
  2940.     position: fixed !important;
  2941.     z-index: 2147483647 !important;
  2942.     top: 20px !important;
  2943.     right: 20px !important;
  2944.     padding: 1.5em !important;
  2945.     color: #000 !important;
  2946.     background: #eee !important;
  2947.     box-shadow: 5px 5px 25px 2px #000 !important;
  2948.     width: 32em !important;
  2949.     border: 1px solid black !important;
  2950.     display: flex !important;
  2951.     flex-direction: column !important;
  2952.   }
  2953.   main {
  2954.     font: 12px/15px sans-serif;
  2955.   }
  2956.   ul {
  2957.     max-height: calc(100vh - 200px);
  2958.     margin: 10px 0 15px 0;
  2959.     padding: 0;
  2960.     list-style: none;
  2961.   }
  2962.   li {
  2963.     margin: 0;
  2964.     padding: .25em 0;
  2965.   }
  2966.   li.options {
  2967.     display: flex;
  2968.     align-items: center;
  2969.     justify-content: space-between;
  2970.   }
  2971.   li.row {
  2972.     flex-wrap: wrap;
  2973.     justify-content: flex-start;
  2974.   }
  2975.   li.row label {
  2976.     flex-direction: row;
  2977.     align-items: center;
  2978.   }
  2979.   li.row input {
  2980.     margin-right: .25em;
  2981.   }
  2982.   li.stretch label {
  2983.     flex: 1;
  2984.     white-space: nowrap;
  2985.   }
  2986.   li.stretch label > span {
  2987.     display: flex;
  2988.     flex-direction: row;
  2989.     flex: 1;
  2990.   }
  2991.   label {
  2992.     display: inline-flex;
  2993.     flex-direction: column;
  2994.   }
  2995.   label:not(:last-child) {
  2996.     margin-right: 1em;
  2997.   }
  2998.   input, select {
  2999.     min-height: 1.6em;
  3000.     box-sizing: border-box;
  3001.   }
  3002.   input[type=checkbox] {
  3003.     margin-left: 0;
  3004.   }
  3005.   input[type=number] {
  3006.     width: 4em;
  3007.   }
  3008.   input:not([type=checkbox])  {
  3009.     padding: 0 .25em;
  3010.   }
  3011.   input[type=range] {
  3012.     flex: 1;
  3013.     width: 100%;
  3014.     margin: 0 .25em;
  3015.     padding: 0;
  3016.     filter: saturate(0);
  3017.     opacity: .5;
  3018.   }
  3019.   u + input[type=range] {
  3020.     max-width: 3em;
  3021.   }
  3022.   input[type=range]:hover {
  3023.     filter: none;
  3024.     opacity: 1;
  3025.   }
  3026.   input[type=color] {
  3027.     position: absolute;
  3028.     width: calc(1.5em + 2px);
  3029.     opacity: 0;
  3030.     cursor: pointer;
  3031.   }
  3032.   u {
  3033.     display: inline-block;
  3034.     position: relative;
  3035.     width: 1.5em;
  3036.     height: 1.5em;
  3037.     border: 1px solid #888;
  3038.     pointer-events: none;
  3039.     color: #888;
  3040.     background-image:
  3041.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  3042.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  3043.     background-size: .5em .5em;
  3044.     background-position: 0 0, .25em .25em;
  3045.   }
  3046.   u::after {
  3047.     position: absolute;
  3048.     top: 0;
  3049.     left: 0;
  3050.     right: 0;
  3051.     bottom: 0;
  3052.     content: "";
  3053.     background-color: var(--color);
  3054.   }
  3055.   .range-edit {
  3056.     position: absolute;
  3057.     box-shadow: 0 0.25em 1em #000;
  3058.     z-index: 99;
  3059.   }
  3060.   #rules input,
  3061.   textarea {
  3062.     flex: 1;
  3063.     resize: vertical;
  3064.     margin: 1px 0;
  3065.     font: 11px/1.25 Consolas, monospace;
  3066.     overflow: hidden; /* prevents wrapping in FF */
  3067.   }
  3068.   :invalid {
  3069.     background-color: #f002;
  3070.     border-color: #800;
  3071.   }
  3072.   code {
  3073.     font-weight: bold;
  3074.   }
  3075.   a {
  3076.     text-decoration: none;
  3077.   }
  3078.   a:hover {
  3079.     text-decoration: underline;
  3080.   }
  3081.   button {
  3082.     padding: .2em 1em;
  3083.     margin: 0 1em;
  3084.   }
  3085.   .column {
  3086.     display: flex;
  3087.     flex-direction: column;
  3088.   }
  3089.   .highlight {
  3090.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  3091.     animation-fill-mode: both;
  3092.   }
  3093.   #rules > * {
  3094.     word-break: break-all;
  3095.   }
  3096.   .invalid-domain {
  3097.     opacity: .5;
  3098.   }
  3099.   .matching-domain {
  3100.     border-color: #56b8ff;
  3101.     background: #d7eaff;
  3102.   }
  3103.   #x {
  3104.     position: absolute;
  3105.     top: 0;
  3106.     right: 0;
  3107.     padding: 4px 8px;
  3108.     cursor: pointer;
  3109.     user-select: none;
  3110.   }
  3111.   #x:hover {
  3112.     background-color: #8884;
  3113.   }
  3114.   #cssApp {
  3115.     color: seagreen;
  3116.   }
  3117.   #exportNotification {
  3118.     color: green;
  3119.     font-weight: bold;
  3120.     position: absolute;
  3121.     left: 0;
  3122.     right: 0;
  3123.     bottom: 2px;
  3124.   }
  3125.   #installHint {
  3126.     color: green;
  3127.   }
  3128.   @keyframes fade-in {
  3129.     from { background-color: deepskyblue }
  3130.     to {}
  3131.   }
  3132.   @media (prefers-color-scheme: dark) {
  3133.     :host {
  3134.       color: #aaa !important;
  3135.       background: #333 !important;
  3136.     }
  3137.     a {
  3138.       color: deepskyblue;
  3139.     }
  3140.     button {
  3141.       background: linear-gradient(-5deg, #333, #555);
  3142.       border: 1px solid #000;
  3143.       box-shadow: 0 2px 6px #181818;
  3144.       border-radius: 3px;
  3145.       cursor: pointer;
  3146.     }
  3147.     button:hover {
  3148.       background: linear-gradient(-5deg, #333, #666);
  3149.     }
  3150.     textarea, input, select {
  3151.       background: #111;
  3152.       color: #BBB;
  3153.       border: 1px solid #555;
  3154.     }
  3155.     input[type=checkbox] {
  3156.       filter: invert(1);
  3157.     }
  3158.     input[type=range] {
  3159.       filter: invert(1) saturate(0);
  3160.     }
  3161.     input[type=range]:hover {
  3162.       filter: invert(1);
  3163.     }
  3164.     @supports (-moz-appearance: none) {
  3165.       input[type=checkbox],
  3166.       input[type=range],
  3167.       input[type=range]:hover {
  3168.         filter: none;
  3169.       }
  3170.     }
  3171.     .range-edit {
  3172.       box-shadow: 0 .5em 1em .5em #000;
  3173.     }
  3174.     .matching-domain {
  3175.       border-color: #0065af;
  3176.       background: #032b58;
  3177.       color: #ddd;
  3178.     }
  3179.     #cssApp {
  3180.       color: darkseagreen;
  3181.     }
  3182.     #installHint {
  3183.       color: greenyellow;
  3184.     }
  3185.     ::-webkit-scrollbar {
  3186.       width: 14px;
  3187.       height: 14px;
  3188.       background: #333;
  3189.     }
  3190.     ::-webkit-scrollbar-button:single-button {
  3191.       background: radial-gradient(circle at center, #555 40%, #333 40%)
  3192.     }
  3193.     ::-webkit-scrollbar-track-piece {
  3194.       background: #444;
  3195.       border: 4px solid #333;
  3196.       border-radius: 8px;
  3197.     }
  3198.     ::-webkit-scrollbar-thumb {
  3199.       border: 3px solid #333;
  3200.       border-radius: 8px;
  3201.       background: #666;
  3202.     }
  3203.     ::-webkit-resizer {
  3204.       background: #111 linear-gradient(-45deg, transparent 3px, #888 3px, #888 4px, transparent 4px, transparent 6px, #888 6px, #888 7px, transparent 7px) no-repeat;
  3205.       border: 2px solid transparent;
  3206.     }
  3207.   }
  3208. </style>
  3209. <main>
  3210.   <a href="${MPIV_BASE_URL}">${GM_info.script.name}</a>
  3211.   <div id=x>x</div>
  3212.   <ul class=column>
  3213.     <li class=options>
  3214.       <label>Popup shows on
  3215.         <select id=start>
  3216.           <option value=auto>automatically
  3217.           <option value=context>Right click / Ctrl
  3218.           <option value=ctrl>Ctrl
  3219.         </select>
  3220.       </label>
  3221.       <label>after, sec<input id=delay type=number min=0.05 max=10 step=0.05 title=seconds></label>
  3222.       <label title="(if the full version of the hovered image is ...% larger)">
  3223.         if larger, %<input id=scale type=number min=0 max=100 step=1>
  3224.       </label>
  3225.       <label>Zoom activates on
  3226.         <select id=zoom>
  3227.           <option value=context>Right click / Shift
  3228.           <option value=wheel>Wheel up / Shift
  3229.           <option value=shift>Shift
  3230.           <option value=auto>automatically
  3231.         </select>
  3232.       </label>
  3233.       <label>...and zooms to
  3234.         <select id=fit>
  3235.           <option value=all>fit to window
  3236.           <option value=large>fit if larger
  3237.           <option value=no>100%
  3238.           <option value="" title="Use custom scale factors">custom
  3239.         </select>
  3240.       </label>
  3241.     </li>
  3242.     <li class=options>
  3243.       <label>Zoom step, %<input id=zoomStep type=number min=100 max=400 step=1>
  3244.       </label>
  3245.       <label>When fully zoomed out:
  3246.         <select id=zoomOut>
  3247.           <option value=stay>stay in zoom mode
  3248.           <option value=auto>stay if still hovered
  3249.           <option value=unzoom>undo zoom mode
  3250.           <option value=close>close popup
  3251.         </select>
  3252.       </label>
  3253.       <label style="flex: 1" title="${trimLeft(`
  3254.         Scale factors to use when “zooms to” selector is set to “custom”.
  3255.         0 = fit to window,
  3256.         0! = same as 0 but also removes smaller values,
  3257.         * after a value marks the default zoom factor, for example: 1*
  3258.         The popup won't shrink below the image's natural size or window size for bigger mages.
  3259.         ${scalesHint}
  3260.       `)}">Custom scale factors:
  3261.         <input id=scales placeholder="${scalesHint}">
  3262.       </label>
  3263.     </li>
  3264.     <li class="options row">
  3265.       <label><input type=checkbox id=center>Always centered</label>
  3266.       <label title="Disable only if you spoof the HTTP headers yourself">
  3267.         <input type=checkbox id=xhr>Anti-hotlinking workaround
  3268.       </label>
  3269.       <label><input type=checkbox id=preload>Start preloading immediately</label>
  3270.       <label><input type=checkbox id=imgtab>Run in image tabs</label>
  3271.       <label title="Don't enable unless you explicitly use it in your custom CSS">
  3272.         <input type=checkbox id=globalStatus>Expose status on &lt;html&gt; node (may cause slowdowns)
  3273.       </label>
  3274.     </li>
  3275.     <li class="options stretch">
  3276.       <label>Background
  3277.         <span>
  3278.           <input id=uiBackgroundColor type=color><u></u>
  3279.           <input id=uiBackgroundOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3280.         </span>
  3281.       </label>
  3282.       <label>Border color, opacity, size
  3283.         <span>
  3284.           <input id=uiBorderColor type=color><u></u>
  3285.           <input id=uiBorderOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3286.           <input id=uiBorder type=range min=0 max=20 step=1 data-title="Border size: $px">
  3287.         </span>
  3288.       </label>
  3289.       <label>Shadow color, opacity, size
  3290.         <span>
  3291.           <input id=uiShadowColor type=color><u></u>
  3292.           <input id=uiShadowOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3293.           <input id=uiShadow type=range min=0 max=100 step=1 data-title="
  3294.             ${'Shadow blur radius: $px\n"0" disables the shadow.'}">
  3295.         </span>
  3296.       </label>
  3297.       <label>Padding
  3298.         <span><input id=uiPadding type=range min=0 max=100 step=1 data-title="Padding: $px"></span>
  3299.       </label>
  3300.       <label>Margin
  3301.         <span><input id=uiMargin type=range min=0 max=100 step=1 data-title="Margin: $px"></span>
  3302.       </label>
  3303.     </li>
  3304.     <li>
  3305.       <a href="${MPIV_BASE_URL}css.html">Custom CSS:</a>&nbsp;
  3306.       e.g. <b>#mpiv-popup { animation: none !important }</b>
  3307.       <a href="#" id=reveal style="float: right"
  3308.          title="You can copy parts of it to override them in your custom CSS">
  3309.          View the built-in CSS</a>
  3310.       <div class=column>
  3311.         <textarea id=css spellcheck=false></textarea>
  3312.         <textarea id=cssApp spellcheck=false hidden readonly rows=30></textarea>
  3313.       </div>
  3314.     </li>
  3315.     <li style="display: flex; justify-content: space-between;">
  3316.       <div><a href="${MPIV_BASE_URL}host_rules.html">Custom host rules:</a></div>
  3317.       <div style="white-space: nowrap">
  3318.         To disable, put any symbol except <code>a..z 0..9 - .</code><br>
  3319.         in "d" value, for example <code>"d": "!foo.com"</code>
  3320.       </div>
  3321.       <div>
  3322.         <input id=search type=search placeholder=Search style="width: 10em; margin-left: 1em">
  3323.       </div>
  3324.     </li>
  3325.     <li style="margin-left: -3px; margin-right: -3px; overflow-y: auto; padding-left: 3px; padding-right: 3px;">
  3326.       <div id=rules class=column>
  3327.         <textarea rows=1 spellcheck=false></textarea>
  3328.       </div>
  3329.     </li>
  3330.     <li>
  3331.       <div hidden id=installLoading>Loading...</div>
  3332.       <div hidden id=installHint>Double-click the rule (or select and press Enter) to add it.
  3333.         Click <code>Apply</code> or <code>Save</code> to confirm.</div>
  3334.       <a href="${MPIV_BASE_URL}more_host_rules.html" id=install>Install rule from repository...</a>
  3335.     </li>
  3336.   </ul>
  3337.   <div style="text-align:center">
  3338.     <button id=ok accesskey=s>Save</button>
  3339.     <button id=apply accesskey=a>Apply</button>
  3340.     <button id=import style="margin-right: 0">Import</button>
  3341.     <button id=export style="margin-left: 0">Export</button>
  3342.     <button id=cancel>Cancel</button>
  3343.     <div id=exportNotification hidden>Copied to clipboard.</div>
  3344.   </div>
  3345. </main>`);
  3346. }
  3347.  
  3348. function createGlobalStyle() {
  3349.   App.globalStyle = /*language=CSS*/ (String.raw`
  3350. #\mpiv-bar {
  3351.   position: fixed;
  3352.   z-index: 2147483647;
  3353.   top: 0;
  3354.   left: 0;
  3355.   right: 0;
  3356.   opacity: 0;
  3357.   transition: opacity 1s ease .25s;
  3358.   text-align: center;
  3359.   font-family: sans-serif;
  3360.   font-size: 15px;
  3361.   font-weight: bold;
  3362.   background: #0005;
  3363.   color: white;
  3364.   padding: 4px 10px;
  3365.   text-shadow: .5px .5px 2px #000;
  3366. }
  3367. #\mpiv-bar.\mpiv-show {
  3368.   opacity: 1;
  3369. }
  3370. #\mpiv-bar[data-zoom]::after {
  3371.   content: " (" attr(data-zoom) ")";
  3372.   opacity: .8;
  3373. }
  3374. #\mpiv-popup.\mpiv-show {
  3375.   display: inline;
  3376. }
  3377. #\mpiv-popup {
  3378.   display: none;
  3379.   cursor: none;
  3380.   animation: .2s \mpiv-fadein both;
  3381.   transition: box-shadow .25s, background-color .25s;
  3382. ${App.popupStyleBase = `
  3383.   border: none;
  3384.   box-sizing: border-box;
  3385.   position: fixed;
  3386.   z-index: 2147483647;
  3387.   padding: 0;
  3388.   margin: 0;
  3389.   top: 0;
  3390.   left: 0;
  3391.   width: auto;
  3392.   height: auto;
  3393.   transform-origin: center;
  3394.   max-width: none;
  3395.   max-height: none;
  3396. `}
  3397. }
  3398. #\mpiv-popup.\mpiv-show {
  3399.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3400.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3401.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3402.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3403. }
  3404. #\mpiv-popup.\mpiv-show[loaded] {
  3405.   background-color: ${Util.color('Background')};
  3406.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3407. }
  3408. #\mpiv-popup.\mpiv-zoom-max {
  3409.   image-rendering: pixelated;
  3410. }
  3411. @keyframes \mpiv-fadein {
  3412.   from {
  3413.     opacity: 0;
  3414.     border-color: transparent;
  3415.   }
  3416.   to {
  3417.     opacity: 1;
  3418.   }
  3419. }
  3420. ` + (cfg.globalStatus ? String.raw`
  3421. :root.\mpiv-loading:not(.\mpiv-preloading) *:hover {
  3422.   cursor: progress !important;
  3423. }
  3424. :root.\mpiv-edge #\mpiv-popup {
  3425.   cursor: default;
  3426. }
  3427. :root.\mpiv-error *:hover {
  3428.   cursor: not-allowed !important;
  3429. }
  3430. :root.\mpiv-ready *:hover,
  3431. :root.\mpiv-large *:hover {
  3432.   cursor: zoom-in !important;
  3433. }
  3434. :root.\mpiv-shift *:hover {
  3435.   cursor: default !important;
  3436. }
  3437. ` : String.raw`
  3438. [\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]):hover {
  3439.   cursor: progress;
  3440. }
  3441. [\mpiv-status~="edge"]:hover {
  3442.   cursor: default;
  3443. }
  3444. [\mpiv-status~="error"]:hover {
  3445.   cursor: not-allowed;
  3446. }
  3447. [\mpiv-status~="ready"]:hover,
  3448. [\mpiv-status~="large"]:hover {
  3449.   cursor: zoom-in;
  3450. }
  3451. [\mpiv-status~="shift"]:hover {
  3452.   cursor: default;
  3453. }
  3454. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3455.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3456.   return App.globalStyle;
  3457. }
  3458.  
  3459. //#region Global utilities
  3460. const clamp = (v, min, max) =>
  3461.   v < min ? min : v > max ? max : v;
  3462.  
  3463. const compareNumbers = (a, b) =>
  3464.   a - b;
  3465.  
  3466. const flattenHtml = str =>
  3467.   str.trim()
  3468.     .replace(/\n\s*/g, '')
  3469.     .replace(/\x20?([:>])\x20/g, '$1');
  3470.  
  3471. const dropEvent = e =>
  3472.   (e.preventDefault(), e.stopPropagation());
  3473.  
  3474. const ensureArray = v =>
  3475.   Array.isArray(v) ? v : [v];
  3476.  
  3477. /** @param {KeyboardEvent} e */
  3478. const eventModifiers = e =>
  3479.   (e.altKey ? '!' : '') +
  3480.   (e.ctrlKey ? '^' : '') +
  3481.   (e.metaKey ? '#' : '') +
  3482.   (e.shiftKey ? '+' : '');
  3483.  
  3484. const now = performance.now.bind(performance);
  3485.  
  3486. const sumProps = (...props) =>
  3487.   props.reduce((sum, v) => sum + (parseFloat(v) || 0), 0);
  3488.  
  3489. const tryCatch = function (fn, ...args) {
  3490.   try {
  3491.     return fn.apply(this, args);
  3492.   } catch (e) {}
  3493. };
  3494.  
  3495. const $ = (sel, node = doc) =>
  3496.   node.querySelector(sel) || false;
  3497.  
  3498. const $$ = (sel, node = doc) =>
  3499.   node.querySelectorAll(sel);
  3500.  
  3501. const $create = (tag, props) =>
  3502.   Object.assign(doc.createElement(tag), props);
  3503.  
  3504. const $css = (el, props) =>
  3505.   Object.entries(props).forEach(([k, v]) =>
  3506.     el.style.setProperty(k, v, 'important'));
  3507.  
  3508. const $many = (q, doc) =>
  3509.   q && ensureArray(q).reduce((el, sel) => el || $(sel, doc), null);
  3510.  
  3511. const $prop = (sel, prop, node = doc) =>
  3512.   (node = $(sel, node)) && node[prop] || '';
  3513.  
  3514. const $propUp = (node, prop) =>
  3515.   (node = node.closest(`[${prop}]`)) &&
  3516.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) ||
  3517.   '';
  3518.  
  3519. const $remove = node =>
  3520.   node && node.remove();
  3521. //#endregion
  3522.  
  3523. //#region Init
  3524.  
  3525. cfg = new Config({save: true});
  3526.  
  3527. (cb => doc.body ? cb() : document.addEventListener('DOMContentLoaded', cb, {once: true}))(() => {
  3528.   const el = doc.body.firstElementChild;
  3529.   App.imageTab = el && el === doc.body.lastElementChild && el.matches('img, video');
  3530.   App.enabled = cfg.imgtab || !App.imageTab;
  3531. });
  3532.  
  3533. if (window === top)
  3534.   GM_registerMenuCommand('MPIV: configure', setup);
  3535.  
  3536. doc.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  3537.  
  3538. if (['greasyfork.org', 'w9p.co', 'github.com'].includes(hostname))
  3539.   doc.addEventListener('click', setupClickedRule, {passive: true});
  3540.  
  3541. window.addEventListener('message', App.onMessage);
  3542. //#endregion