☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

目前为 2020-04-08 提交的版本。查看 最新版本。

  1. /*
  2. // ==UserScript==
  3. // @name        Mouseover Popup Image Viewer
  4. // @namespace   https://github.com/tophf
  5. // @description Shows images and videos behind links and thumbnails.
  6.  
  7. // @include     *
  8. // @connect     *
  9.  
  10. // allow rule installer in config dialog https://w9p.co/userscripts/mpiv/more_host_rules.html
  11. // @connect     w9p.co
  12.  
  13. // @grant       GM_getValue
  14. // @grant       GM_setValue
  15. // @grant       GM_xmlhttpRequest
  16. // @grant       GM_download
  17. // @grant       GM_openInTab
  18. // @grant       GM_registerMenuCommand
  19.  
  20. // @version     1.1.10
  21. // @author      tophf
  22.  
  23. // @original-version 2017.9.29
  24. // @original-author  kuehlschrank
  25.  
  26. // @supportURL  https://github.com/tophf/mpiv/issues
  27. // @homepage    https://w9p.co/userscripts/mpiv/
  28. // @icon        https://w9p.co/userscripts/mpiv/icon.png
  29. // ==/UserScript==
  30. */
  31.  
  32. 'use strict';
  33.  
  34. //#region Globals
  35.  
  36. /** @type mpiv.Config */
  37. let cfg;
  38. /** @type mpiv.AppInfo */
  39. let ai = {rule: {}};
  40. /** @type Element */
  41. let elConfig;
  42.  
  43. const undefined = void 0; // eslint-disable-line no-shadow-restricted-names, no-redeclare
  44. const doc = document;
  45. const hostname = location.hostname;
  46. const dotDomain = '.' + hostname;
  47. const isGoogleDomain = /(^|\.)google(\.com?)?(\.\w+)?$/.test(hostname);
  48. const isGoogleImages = isGoogleDomain && /[&?]tbm=isch(&|$)/.test(location.search);
  49.  
  50. const PREFIX = 'mpiv-';
  51. const STATUS_ATTR = `${PREFIX}status`;
  52. const MSG = Object.assign({}, ...[
  53.   'getViewSize',
  54.   'viewSize',
  55. ].map(k => ({[k]: `${PREFIX}${k}`})));
  56. const WHEEL_EVENT = 'onwheel' in doc ? 'wheel' : 'mousewheel';
  57. // time for volatile things to settle down meanwhile we postpone action
  58. // examples: loading image from cache, quickly moving mouse over one element to another
  59. const SETTLE_TIME = 50;
  60. // used to detect JS code in host rules
  61. const RX_HAS_CODE = /(^|[^-\w])return[\W\s]/;
  62. const ZOOM_MAX = 16;
  63.  
  64. //#endregion
  65.  
  66. const App = {
  67.  
  68.   activate(info, event) {
  69.     const {match, node, rule, url} = info;
  70.     if (elConfig) console.info({node, rule, url, match});
  71.     if (ai.node) App.deactivate();
  72.     ai = info;
  73.     ai.force = event.ctrlKey;
  74.     ai.gNum = 0;
  75.     ai.zooming = cfg.css.includes(`${PREFIX}zooming`);
  76.     Util.suppressTooltip();
  77.     Calc.updateViewSize();
  78.     Events.toggle(true);
  79.     Events.trackMouse(event);
  80.     if (ai.force) {
  81.       App.start();
  82.     } else if (cfg.start === 'auto' && !rule.manual) {
  83.       App.belate();
  84.     } else {
  85.       Status.set('ready');
  86.     }
  87.   },
  88.  
  89.   belate() {
  90.     if (cfg.preload) {
  91.       ai.preloadStart = now();
  92.       App.start();
  93.       Status.set('+preloading');
  94.       setTimeout(Status.set, cfg.delay, '-preloading');
  95.     } else {
  96.       ai.timer = setTimeout(App.start, cfg.delay);
  97.     }
  98.   },
  99.  
  100.   checkProgress({start} = {}) {
  101.     const p = ai.popup;
  102.     if (p) {
  103.       const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  104.       const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  105.       if (h) {
  106.         const scale = !ai.force && Math.max(w / (ai.rect.width || 1), h / (ai.rect.height || 1));
  107.         if (scale && scale < cfg.scale) {
  108.           App.deactivate();
  109.           return 'abort';
  110.         }
  111.         App.stopTimers();
  112.         const wait = ai.preloadStart && (ai.preloadStart + cfg.delay - now());
  113.         if (wait > 0) {
  114.           ai.timer = setTimeout(App.checkProgress, wait);
  115.         } else if ((ai.urls || 0).length && Math.max(w, h) < 130) {
  116.           App.handleError({type: 'error'});
  117.         } else {
  118.           App.commit();
  119.         }
  120.         return;
  121.       }
  122.     }
  123.     if (start)
  124.       ai.timerProgress = setInterval(App.checkProgress, 150);
  125.   },
  126.  
  127.   async commit() {
  128.     App.updateStyles();
  129.     Calc.naturalSize();
  130.     const p = ai.popup;
  131.     p.className = `${PREFIX}show`;
  132.     p.removeAttribute('style');
  133.     Calc.updateExtras();
  134.     Calc.updateScales();
  135.     Status.set(false);
  136.     const willZoom = cfg.zoom === 'auto' || App.isImageTab && cfg.imgtab;
  137.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  138.     if (willMove)
  139.       Popup.move();
  140.     Bar.updateName();
  141.     Bar.updateDetails();
  142.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  143.                ai.nheight > p.clientHeight + ai.extras.h;
  144.     if (ai.large)
  145.       Status.set('large');
  146.     // FF renders a blank bg+border first; I couldn't find a proper solution
  147.     if (p.complete && isFF && ai.large)
  148.       p.style.backgroundImage = `url('${p.src}')`;
  149.   },
  150.  
  151.   deactivate({wait} = {}) {
  152.     App.stopTimers();
  153.     if (ai.popup)
  154.       ai.popup.removeEventListener('load', Popup.onLoad);
  155.     if (ai.req)
  156.       tryCatch.call(ai.req, ai.req.abort);
  157.     if (ai.tooltip)
  158.       ai.tooltip.node.title = ai.tooltip.text;
  159.     Status.set(false);
  160.     Bar.set(false);
  161.     Events.toggle(false);
  162.     Popup.destroy();
  163.     if (wait) {
  164.       App.enabled = false;
  165.       setTimeout(App.enable, 200);
  166.     }
  167.     ai = {rule: {}};
  168.   },
  169.  
  170.   enable() {
  171.     App.enabled = true;
  172.   },
  173.  
  174.   handleError(e, rule = ai.rule) {
  175.     if (isGoogleImages && cfg.xhr && !ai.xhr) {
  176.       ai.xhr = true;
  177.       console.debug('Retrying in XHR mode', ai.url);
  178.       App.startSingle();
  179.       return;
  180.     }
  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 zoom = ai.nwidth && `${
  375.       Math.round(ai.scale * 100)
  376.     }%, ${
  377.       ai.nwidth
  378.     } x ${
  379.       ai.nheight
  380.     } px, ${
  381.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  382.     } MP`.replace(/\x20/g, '\xA0');
  383.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  384.       if (zoom) ai.bar.dataset.zoom = zoom;
  385.       else delete ai.bar.dataset.zoom;
  386.       Bar.show();
  387.     }
  388.   },
  389. };
  390.  
  391. const Calc = {
  392.  
  393.   frameSize(elFrame, parentWindow) {
  394.     if (!elFrame) return;
  395.     const r = elFrame.getBoundingClientRect();
  396.     const w = clamp(r.width, 0, parentWindow.innerWidth - r.left);
  397.     const h = clamp(r.height, 0, parentWindow.innerHeight - r.top);
  398.     return [w, h];
  399.   },
  400.  
  401.   generateScales(fit) {
  402.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  403.     const zoomStep = cfg.zoomStep / 100;
  404.     const arr = [scale];
  405.     if (fit !== 1) {
  406.       const diff = goal / scale;
  407.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  408.       const step = steps && Math.pow(diff, 1 / steps);
  409.       for (let i = steps; --i > 0;)
  410.         arr.push((scale *= step));
  411.       arr.push(scale = goal);
  412.     }
  413.     while ((scale *= zoomStep) <= ZOOM_MAX)
  414.       arr.push(scale);
  415.     return arr;
  416.   },
  417.  
  418.   naturalSize() {
  419.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  420.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  421.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  422.     if (p.clientWidth > nw) {
  423.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  424.       nh = ai.nheight = w / nw * nh | 0;
  425.       nw = ai.nwidth = w;
  426.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  427.     }
  428.   },
  429.  
  430.   rect() {
  431.     let {node, rule} = ai;
  432.     let n = rule.rect && node.closest(rule.rect);
  433.     if (n) return n.getBoundingClientRect();
  434.     const nested = node.getElementsByTagName('*');
  435.     let maxArea = 0;
  436.     let maxBounds;
  437.     n = node;
  438.     for (let i = 0; n; n = nested[i++]) {
  439.       const bounds = n.getBoundingClientRect();
  440.       const area = bounds.width * bounds.height;
  441.       if (area > maxArea) {
  442.         maxArea = area;
  443.         maxBounds = bounds;
  444.         node = n;
  445.       }
  446.     }
  447.     return maxBounds;
  448.   },
  449.  
  450.   placement() {
  451.     if (!ai.popup) return;
  452.     let x, y;
  453.     const {cx, cy, extras, view} = ai;
  454.     const vw = view.w - extras.outw;
  455.     const vh = view.h - extras.outh;
  456.     const w = ai.scale * ai.nwidth + extras.inw;
  457.     const h = ai.scale * ai.nheight + extras.inh;
  458.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  459.       const r = ai.rect;
  460.       const rx = (r.left + r.right) / 2;
  461.       const ry = (r.top + r.bottom) / 2;
  462.       if (vw - r.right - 40 > w || w < r.left - 40) {
  463.         if (h < vh - 60)
  464.           y = clamp(ry - h / 2, 30, vh - h - 30);
  465.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  466.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  467.         if (w < vw - 60)
  468.           x = clamp(rx - w / 2, 30, vw - w - 30);
  469.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  470.       }
  471.     }
  472.     if (x == null)
  473.       x = (vw - w) * (vw > w ? .5 : clamp(5 / 3 * (cx / vw - .2), 0, 1));
  474.     if (y == null)
  475.       y = (vh - h) * (vh > h ? .5 : clamp(5 / 3 * (cy / vh - .2), 0, 1));
  476.     return {
  477.       x: Math.round(x + extras.o),
  478.       y: Math.round(y + extras.o),
  479.       w: Math.round(w),
  480.       h: Math.round(h),
  481.     };
  482.   },
  483.  
  484.   scaleBiggerThan(scale, i, arr) {
  485.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  486.   },
  487.  
  488.   scaleIndex(dir) {
  489.     const i = ai.scales.indexOf(ai.scale);
  490.     if (i >= 0) return i + dir;
  491.     for (
  492.       let len = ai.scales.length,
  493.         i = dir > 0 ? 0 : len - 1;
  494.       i >= 0 && i < len;
  495.       i += dir
  496.     ) {
  497.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  498.         return i;
  499.     }
  500.     return -1;
  501.   },
  502.  
  503.   scaleForFirstZoom(keepScale) {
  504.     const z = ai.scaleZoom;
  505.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  506.   },
  507.  
  508.   updateExtras() {
  509.     const s = getComputedStyle(ai.popup);
  510.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  511.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  512.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  513.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  514.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  515.     ai.extras = {
  516.       inw, inh,
  517.       outw, outh,
  518.       o: o2 / 2,
  519.       w: inw + outw,
  520.       h: inh + outh,
  521.     };
  522.   },
  523.  
  524.   updateScales() {
  525.     const fit = Math.min(
  526.       (ai.view.w - ai.extras.w) / ai.nwidth,
  527.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  528.     const isCustom = !cfg.fit && cfg.scales.length;
  529.     let cutoff = Math.min(1, fit);
  530.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  531.     if (isCustom) {
  532.       const dst = [];
  533.       for (const scale of cfg.scales) {
  534.         const val = parseFloat(scale) || fit;
  535.         dst.push(val);
  536.         if (isCustom && typeof scale === 'string') {
  537.           if (scale.includes('!')) cutoff = val;
  538.           if (scale.includes('*')) scaleZoom = val;
  539.         }
  540.       }
  541.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  542.     } else {
  543.       ai.scales = Calc.generateScales(fit);
  544.     }
  545.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  546.     ai.scaleFit = fit;
  547.     ai.scaleZoom = scaleZoom;
  548.   },
  549.  
  550.   updateViewSize() {
  551.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  552.     ai.view = {
  553.       w: view.clientWidth,
  554.       h: view.clientHeight,
  555.     };
  556.     if (window === top) return;
  557.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  558.     if (w && h) {
  559.       ai.view = {w, h};
  560.     } else {
  561.       window.addEventListener('message', App.onMessageChild);
  562.       parent.postMessage(MSG.getViewSize, '*');
  563.     }
  564.   },
  565. };
  566.  
  567. class Config {
  568.  
  569.   constructor({data: c = GM_getValue('cfg'), save}) {
  570.     if (typeof c === 'string')
  571.       c = tryCatch(JSON.parse, c);
  572.     if (typeof c !== 'object' || !c)
  573.       c = {};
  574.     const {DEFAULTS} = Config;
  575.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  576.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  577.         '';
  578.     if (c.version !== DEFAULTS.version) {
  579.       if (typeof c.hosts === 'string')
  580.         c.hosts = c.hosts.split('\n')
  581.           .map(s => tryCatch(JSON.parse, s) || s)
  582.           .filter(Boolean);
  583.       if (c.close === true || c.close === false)
  584.         c.zoomOut = c.close ? 'auto' : 'stay';
  585.       for (const key in DEFAULTS)
  586.         if (typeof c[key] !== typeof DEFAULTS[key])
  587.           c[key] = DEFAULTS[key];
  588.       if (c.version === 3 && c.scales[0] === 0)
  589.         c.scales[0] = '0!';
  590.       for (const key in c)
  591.         if (!(key in DEFAULTS))
  592.           delete c[key];
  593.       c.version = DEFAULTS.version;
  594.       if (save)
  595.         GM_setValue('cfg', c);
  596.     }
  597.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  598.       App.globalStyle = '';
  599.     if (!Array.isArray(c.scales))
  600.       c.scales = [];
  601.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  602.     Object.assign(this, DEFAULTS, c);
  603.   }
  604. }
  605.  
  606. /** @type mpiv.Config */
  607. Config.DEFAULTS = Object.assign(Object.create(null), {
  608.   center: false,
  609.   css: '',
  610.   delay: 500,
  611.   fit: '',
  612.   globalStatus: false,
  613.   // prefer ' inside rules because " will be displayed as \"
  614.   // example: "img[src*='icon']"
  615.   hosts: [{
  616.     name: 'No popup for YouTube thumbnails',
  617.     d: 'www.youtube.com',
  618.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  619.     s: '',
  620.   }, {
  621.     name: 'No popup for SVG/PNG icons',
  622.     d: '',
  623.     e: "img[src*='icon']",
  624.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  625.     s: '',
  626.   }],
  627.   imgtab: false,
  628.   preload: false,
  629.   scale: 1.25,
  630.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  631.   start: 'auto',
  632.   uiBackgroundColor: '#ffffff',
  633.   uiBackgroundOpacity: 100,
  634.   uiBorderColor: '#000000',
  635.   uiBorderOpacity: 100,
  636.   uiBorder: 0,
  637.   uiShadowColor: '#000000',
  638.   uiShadowOpacity: 80,
  639.   uiShadow: 20,
  640.   uiPadding: 0,
  641.   uiMargin: 0,
  642.   version: 6,
  643.   xhr: true,
  644.   zoom: 'context',
  645.   zoomOut: 'auto',
  646.   zoomStep: 133,
  647. });
  648.  
  649. const Events = {
  650.  
  651.   hoverData: [],
  652.   hoverTimer: 0,
  653.  
  654.   onMouseOver(e) {
  655.     if (!App.enabled || e.shiftKey || ai.zoomed)
  656.       return;
  657.     let node = e.target;
  658.     if (node === ai.popup ||
  659.         node === doc.body ||
  660.         node === doc.documentElement ||
  661.         node === elConfig ||
  662.         ai.gallery && ai.rectHovered)
  663.       return;
  664.     if (node.shadowRoot)
  665.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  666.     // we don't want to process everything in the path of a quickly moving mouse cursor
  667.     Events.hoverData = [now(), e, node];
  668.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  669.   },
  670.  
  671.   onMouseOverThrottled() {
  672.     const [start, e, node] = Events.hoverData;
  673.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  674.     const wait = start + SETTLE_TIME - now();
  675.     Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  676.     if (Events.hoverTimer)
  677.       return;
  678.     if (!node.closest(':hover'))
  679.       return;
  680.     if (!Ruler.rules)
  681.       Ruler.init();
  682.     let a;
  683.     const tag = node.tagName;
  684.     const src = node.currentSrc || node.src;
  685.     const isPic = tag === 'IMG' || tag === 'VIDEO' && /\.(webm|mp4)(\?|$)/.test(src);
  686.     const info =
  687.       // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  688.       tag !== 'A' &&
  689.         RuleMatcher.find(isPic && !src.startsWith('data:') && Util.rel2abs(src), node) ||
  690.       (a = node.closest('A')) &&
  691.         RuleMatcher.findForLink(a) ||
  692.       isPic &&
  693.         {node, rule: {}, url: src};
  694.     if (info && info.url && info.node !== ai.node)
  695.       App.activate(info, e);
  696.   },
  697.  
  698.   onMouseOut(e) {
  699.     if (!e.relatedTarget && !e.shiftKey)
  700.       App.deactivate();
  701.   },
  702.  
  703.   onMouseOutShadow(e) {
  704.     const root = e.target.shadowRoot;
  705.     if (root) {
  706.       root.removeEventListener('mouseover', Events.onMouseOver);
  707.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  708.     }
  709.   },
  710.  
  711.   onMouseMove(e) {
  712.     Events.trackMouse(e);
  713.     if (e.shiftKey) {
  714.       ai.lazyUnload = true;
  715.     } else if (!ai.zoomed && !ai.rectHovered) {
  716.       App.deactivate();
  717.     } else if (ai.zoomed) {
  718.       Popup.move();
  719.       const {cx, cy, view: {w, h}} = ai;
  720.       const bx = w / 6;
  721.       const by = h / 6;
  722.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  723.       Status.set(`${onEdge ? '+' : '-'}edge`);
  724.     }
  725.   },
  726.  
  727.   onMouseDown({shiftKey, button}) {
  728.     if (button === 0 && shiftKey && ai.popup && ai.popup.controls) {
  729.       ai.controlled = ai.zoomed = true;
  730.     } else if (button === 2 || shiftKey) {
  731.       // we ignore RMB and Shift
  732.     } else {
  733.       App.deactivate({wait: true});
  734.       document.addEventListener('mouseup', App.enable, {once: true});
  735.     }
  736.   },
  737.  
  738.   onMouseScroll(e) {
  739.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  740.     if (ai.zoomed) {
  741.       Events.zoomInOut(dir);
  742.     } else if (ai.gNum > 1 && ai.popup) {
  743.       Gallery.next(-dir);
  744.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  745.       App.toggleZoom();
  746.     } else {
  747.       App.deactivate();
  748.       return;
  749.     }
  750.     dropEvent(e);
  751.   },
  752.  
  753.   onKeyDown(e) {
  754.     switch (e.key) {
  755.       case 'Shift':
  756.         Status.set('+shift');
  757.         if (ai.popup && 'controls' in ai.popup)
  758.           ai.popup.controls = true;
  759.         break;
  760.       case 'Control':
  761.         if (!ai.popup && (cfg.start !== 'auto' || ai.rule.manual))
  762.           App.start();
  763.         break;
  764.     }
  765.   },
  766.  
  767.   onKeyUp(e) {
  768.     switch (e.key.length > 1 ? e.key : e.code) {
  769.       case 'Shift':
  770.         Status.set('-shift');
  771.         if ((ai.popup || {}).controls)
  772.           ai.popup.controls = false;
  773.         if (ai.controlled) {
  774.           ai.controlled = false;
  775.           return;
  776.         }
  777.         if (ai.popup && (ai.zoomed || ai.rectHovered !== false))
  778.           App.toggleZoom();
  779.         else
  780.           App.deactivate({wait: true});
  781.         break;
  782.       case 'Control':
  783.         break;
  784.       case 'Escape':
  785.         App.deactivate({wait: true});
  786.         break;
  787.       case 'ArrowRight':
  788.       case 'KeyJ':
  789.         dropEvent(e);
  790.         Gallery.next(1);
  791.         break;
  792.       case 'ArrowLeft':
  793.       case 'KeyK':
  794.         dropEvent(e);
  795.         Gallery.next(-1);
  796.         break;
  797.       case 'KeyD': {
  798.         dropEvent(e);
  799.         Remoting.saveFile();
  800.         break;
  801.       }
  802.       case 'KeyT':
  803.         ai.lazyUnload = true;
  804.         GM_openInTab(Util.tabFixUrl() || ai.popup.src);
  805.         App.deactivate();
  806.         break;
  807.       default:
  808.         App.deactivate({wait: true});
  809.     }
  810.   },
  811.  
  812.   onContext(e) {
  813.     if (e.shiftKey) return;
  814.     if (cfg.zoom === 'context' && ai.popup && App.toggleZoom()) {
  815.       dropEvent(e);
  816.     } else if (!ai.popup && (cfg.start === 'context' || (cfg.start === 'auto' && ai.rule.manual))) {
  817.       App.start();
  818.       dropEvent(e);
  819.     } else {
  820.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  821.     }
  822.   },
  823.  
  824.   pierceShadow(node, x, y) {
  825.     for (let root; (root = node.shadowRoot);) {
  826.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  827.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  828.       const inner = root.elementFromPoint(x, y);
  829.       if (!inner || inner === node)
  830.         break;
  831.       node = inner;
  832.     }
  833.     return node;
  834.   },
  835.  
  836.   toggle(enable) {
  837.     const onOff = enable ? doc.addEventListener : doc.removeEventListener;
  838.     const passive = enable ? {passive: true} : undefined;
  839.     onOff.call(doc, 'mousemove', Events.onMouseMove, passive);
  840.     onOff.call(doc, 'mouseout', Events.onMouseOut, passive);
  841.     onOff.call(doc, 'mousedown', Events.onMouseDown, passive);
  842.     onOff.call(doc, 'contextmenu', Events.onContext);
  843.     onOff.call(doc, 'keydown', Events.onKeyDown);
  844.     onOff.call(doc, 'keyup', Events.onKeyUp);
  845.     onOff.call(doc, WHEEL_EVENT, Events.onMouseScroll, enable ? {passive: false} : undefined);
  846.   },
  847.  
  848.   trackMouse(e) {
  849.     const cx = ai.cx = e.clientX;
  850.     const cy = ai.cy = e.clientY;
  851.     const r = ai.rect || (ai.rect = Calc.rect());
  852.     ai.rectHovered =
  853.       cx > r.left - 2 && cx < r.right + 2 &&
  854.       cy > r.top - 2 && cy < r.bottom + 2;
  855.   },
  856.  
  857.   zoomInOut(dir) {
  858.     const i = Calc.scaleIndex(dir);
  859.     const n = ai.scales.length;
  860.     if (i >= 0 && i < n)
  861.       ai.scale = ai.scales[i];
  862.     const zo = cfg.zoomOut;
  863.     if (i <= 0 && zo !== 'stay') {
  864.       if (ai.scaleFit < ai.scale * .99) {
  865.         ai.scales.unshift(ai.scale = ai.scaleFit);
  866.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  867.         App.deactivate({wait: true});
  868.         return;
  869.       }
  870.       ai.zoomed = zo !== 'unzoom';
  871.     } else {
  872.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  873.     }
  874.     if (ai.zooming)
  875.       ai.popup.classList.add(`${PREFIX}zooming`);
  876.     Popup.move();
  877.     Bar.updateDetails();
  878.   },
  879. };
  880.  
  881. const Gallery = {
  882.  
  883.   functionParams: ['text', 'doc', 'url', 'm', 'rule', 'node', 'cb'],
  884.  
  885.   makeParser(g) {
  886.     return (
  887.       typeof g === 'function' ? g :
  888.         typeof g === 'string' ? Util.newFunction(...Gallery.functionParams, g) :
  889.           Gallery.defaultParser
  890.     );
  891.   },
  892.  
  893.   findIndex(gUrl) {
  894.     const sel = gUrl.split('#')[1];
  895.     if (!sel)
  896.       return 0;
  897.     if (/^\d+$/.test(sel))
  898.       return parseInt(sel);
  899.     for (let i = ai.gNum; i--;) {
  900.       let {url} = ai.gItems[i];
  901.       if (Array.isArray(url))
  902.         url = url[0];
  903.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  904.         return i;
  905.     }
  906.     return 0;
  907.   },
  908.  
  909.   next(dir) {
  910.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  911.     const item = ai.gItems[ai.gIndex];
  912.     if (Array.isArray(item.url)) {
  913.       ai.urls = item.url.slice(1);
  914.       ai.url = item.url[0];
  915.     } else {
  916.       ai.urls = null;
  917.       ai.url = item.url;
  918.     }
  919.     Popup.destroy();
  920.     App.startSingle();
  921.     Bar.updateName();
  922.     Gallery.preload(dir);
  923.   },
  924.  
  925.   nextIndex(dir) {
  926.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  927.   },
  928.  
  929.   preload(dir) {
  930.     if (!ai.popup || !dir) return;
  931.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir)].url)[0];
  932.     ai.popup.addEventListener('load', Gallery.preloadOnLoad, {once: true});
  933.   },
  934.  
  935.   preloadOnLoad() {
  936.     $create('img', {src: ai.preloadUrl});
  937.   },
  938.  
  939.   defaultParser(text, doc, docUrl, m, rule) {
  940.     const {g} = rule;
  941.     const qEntry = g.entry;
  942.     const qCaption = ensureArray(g.caption);
  943.     const qImage = g.image;
  944.     const qTitle = g.title;
  945.     const fix =
  946.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  947.       (s => s.trim());
  948.     const items = [...$$(qEntry || qImage, doc)]
  949.       .map(processEntry)
  950.       .filter(Boolean);
  951.     items.title = processTitle();
  952.     items.index =
  953.       typeof g.index === 'string' &&
  954.         Remoting.findImageUrl(tryCatch($, g.index, doc), docUrl) ||
  955.       RX_HAS_CODE.test(g.index) &&
  956.         Util.newFunction('items', 'node', g.index)(items, ai.node) ||
  957.       g.index;
  958.     return items;
  959.  
  960.     function processEntry(entry) {
  961.       const item = {};
  962.       try {
  963.         const img = qEntry ? $(qImage, entry) : entry;
  964.         item.url = fix(Remoting.findImageUrl(img, docUrl), true);
  965.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  966.       } catch (e) {}
  967.       return item.url && item;
  968.     }
  969.  
  970.     function processCaption(selector) {
  971.       const el = $(selector, this) ||
  972.                  $orSelf(selector, this.previousElementSibling) ||
  973.                  $orSelf(selector, this.nextElementSibling);
  974.       return el && fix(el.textContent);
  975.     }
  976.  
  977.     function processTitle() {
  978.       const el = $(qTitle, doc);
  979.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  980.     }
  981.  
  982.     function $orSelf(selector, el) {
  983.       if (el && !el.matches(qEntry))
  984.         return el.matches(selector) ? el : $(selector, el);
  985.     }
  986.   },
  987. };
  988.  
  989. const Popup = {
  990.  
  991.   async create(src, pageUrl) {
  992.     Popup.destroy();
  993.     ai.imageUrl = src;
  994.     if (ai.xhr && src)
  995.       src = await Remoting.getImage(src, pageUrl).catch(App.handleError);
  996.     if (!src) return;
  997.     const isVideo = Util.isVideoUrl(src);
  998.     const p = ai.popup = isVideo ? PopupVideo.create() : $create('img');
  999.     p.id = `${PREFIX}popup`;
  1000.     p.src = src;
  1001.     p.addEventListener('error', App.handleError);
  1002.     if (ai.zooming)
  1003.       p.addEventListener('transitionend', Popup.onZoom);
  1004.     doc.body.insertBefore(p, ai.bar || undefined);
  1005.     await 0;
  1006.     if (App.checkProgress({start: true}) === 'abort')
  1007.       return;
  1008.     if (p.complete)
  1009.       Popup.onLoad.call(ai.popup);
  1010.     else if (!isVideo)
  1011.       p.addEventListener('load', Popup.onLoad, {once: true});
  1012.   },
  1013.  
  1014.   destroy() {
  1015.     const p = ai.popup;
  1016.     if (!p) return;
  1017.     p.removeEventListener('error', App.handleError);
  1018.     if (typeof p.pause === 'function')
  1019.       p.pause();
  1020.     if (!ai.lazyUnload) {
  1021.       if (p.src.startsWith('blob:'))
  1022.         URL.revokeObjectURL(p.src);
  1023.     }
  1024.     p.remove();
  1025.     ai.zoomed = ai.popup = ai.popupLoaded = null;
  1026.   },
  1027.  
  1028.   move() {
  1029.     const p = Calc.placement();
  1030.     $css(ai.popup, {
  1031.       transform: `translate(${p.x}px, ${p.y}px)`,
  1032.       width: `${p.w}px`,
  1033.       height: `${p.h}px`,
  1034.     });
  1035.   },
  1036.  
  1037.   onLoad() {
  1038.     this.setAttribute('loaded', '');
  1039.     ai.popupLoaded = true;
  1040.   },
  1041.  
  1042.   onZoom() {
  1043.     this.classList.remove(`${PREFIX}zooming`);
  1044.   },
  1045. };
  1046.  
  1047. const PopupVideo = {
  1048.   create() {
  1049.     ai.bufBar = false;
  1050.     ai.bufStart = now();
  1051.     const shouldMute = new AudioContext().state === 'suspended';
  1052.     return $create('video', {
  1053.       autoplay: true,
  1054.       controls: shouldMute,
  1055.       muted: shouldMute,
  1056.       loop: true,
  1057.       volume: clamp(+GM_getValue('volume') || .5, 0, 1),
  1058.       onprogress: PopupVideo.progress,
  1059.       oncanplaythrough: PopupVideo.progressDone,
  1060.       onvolumechange: PopupVideo.rememberVolume,
  1061.     });
  1062.   },
  1063.  
  1064.   progress() {
  1065.     const {duration} = this;
  1066.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1067.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1068.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1069.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1070.     }
  1071.   },
  1072.  
  1073.   progressDone() {
  1074.     this.onprogress = this.oncanplaythrough = null;
  1075.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1076.       Bar.set(false);
  1077.     Popup.onLoad.call(this);
  1078.   },
  1079.  
  1080.   rememberVolume() {
  1081.     GM_setValue('volume', this.volume);
  1082.   },
  1083. };
  1084.  
  1085. const Ruler = {
  1086. /*
  1087.  'u' works only with URLs so it's ignored if 'html' is true
  1088.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1089.    |foo = url or text must start with foo
  1090.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1091.        when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1092.  'r' is checked only if 'u' matches first
  1093. */
  1094.   init() {
  1095.     const errors = new Map();
  1096.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1097.     for (const rule of errors.keys())
  1098.       App.handleError('Invalid custom host rule:', rule);
  1099.  
  1100.     // rules that disable previewing
  1101.     const disablers = [
  1102.       dotDomain.endsWith('.stackoverflow.com') && {
  1103.         e: '.post-tag, .post-tag img',
  1104.         s: '',
  1105.       },
  1106.       {
  1107.         u: '||disqus.com/',
  1108.         s: '',
  1109.       },
  1110.     ];
  1111.  
  1112.     // optimization: a rule is created only when on domain
  1113.     const perDomain = [
  1114.       hostname.includes('startpage') && {
  1115.         r: /\boiu=(.+)/,
  1116.         s: '$1',
  1117.         follow: true,
  1118.       },
  1119.       dotDomain.endsWith('.4chan.org') && {
  1120.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1121.         q: '.op .fileText a',
  1122.         css: '#post-preview{display:none}',
  1123.       },
  1124.       hostname.includes('amazon.') && {
  1125.         r: /.+?images\/I\/.+?\./,
  1126.         s: m => {
  1127.           const uh = doc.getElementById('universal-hover');
  1128.           return uh ? '' : m[0] + 'jpg';
  1129.         },
  1130.         css: '#zoomWindow{display:none!important;}',
  1131.       },
  1132.       dotDomain.endsWith('.bing.com') && {
  1133.         e: 'a[m*="murl"]',
  1134.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1135.         s: '$1',
  1136.         html: true,
  1137.       },
  1138.       ...dotDomain.endsWith('.deviantart.com') && [{
  1139.         e: '[data-super-full-img] *, img[src*="/th/"]',
  1140.         s: (m, node) =>
  1141.           $propUp(node, 'data-super-full-img') ||
  1142.           (node = node.dataset.embedId && node.nextElementSibling) &&
  1143.           node.dataset.embedId && node.src,
  1144.       }, {
  1145.         e: '.dev-view-deviation img',
  1146.         s: () => [
  1147.           $('.dev-page-download').href,
  1148.           $('.dev-content-full').src,
  1149.         ].filter(Boolean),
  1150.       }, {
  1151.         e: 'a[data-hook=deviation_link]',
  1152.         q: 'link[as=image]',
  1153.       }] || [],
  1154.       dotDomain.endsWith('.dropbox.com') && {
  1155.         r: /(.+?&size_mode)=\d+(.*)/,
  1156.         s: '$1=5$2',
  1157.       },
  1158.       dotDomain.endsWith('.facebook.com') && {
  1159.         e: 'a[href*="ref=hovercard"]',
  1160.         s: (m, node) =>
  1161.           'https://www.facebook.com/photo.php?fbid=' +
  1162.           /\/[0-9]+_([0-9]+)_/.exec($('img', node).src)[1],
  1163.         follow: true,
  1164.       },
  1165.       dotDomain.endsWith('.facebook.com') && {
  1166.         r: /(fbcdn|external).*?(app_full_proxy|safe_image).+?(src|url)=(http.+?)[&"']/,
  1167.         s: (m, node) =>
  1168.           node.parentNode.className.includes('video') && m[4].includes('fbcdn') ? '' :
  1169.             decodeURIComponent(m[4]),
  1170.         html: true,
  1171.         follow: true,
  1172.       },
  1173.       dotDomain.endsWith('.flickr.com') &&
  1174.       tryCatch(() => unsafeWindow.YUI_config.flickr.api.site_key) && {
  1175.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1176.         s: m => `https://www.flickr.com/services/rest/?${
  1177.           new URLSearchParams({
  1178.             photo_id: m[1],
  1179.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1180.             method: 'flickr.photos.getSizes',
  1181.             format: 'json',
  1182.             nojsoncallback: 1,
  1183.           }).toString()}`,
  1184.         q: text => JSON.parse(text).sizes.size.pop().source,
  1185.       },
  1186.       dotDomain.endsWith('.github.com') && {
  1187.         r: new RegExp([
  1188.           /(avatars.+?&s=)\d+/,
  1189.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1190.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1191.         ].map(rx => rx.source).join('|')),
  1192.         s: m => `https://${
  1193.           m[1] ? `${m[1]}460` :
  1194.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1195.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1196.         }`,
  1197.       },
  1198.       isGoogleImages && {
  1199.         e: 'a[href*="imgres?imgurl="] img',
  1200.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1201.         follow: true,
  1202.       },
  1203.       isGoogleImages && {
  1204.         e: '[data-tbnid] a:not([href])',
  1205.         s: (m, a) => {
  1206.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1207.           new MutationObserver((_, mo) => {
  1208.             mo.disconnect();
  1209.             App.enabled = true;
  1210.             a.alt = a2.innerText;
  1211.             const {left, top} = a.getBoundingClientRect();
  1212.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1213.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1214.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1215.         },
  1216.       },
  1217.       dotDomain.endsWith('.instagram.com') && {
  1218.         e: [
  1219.           'a[href*="/p/"]',
  1220.           'article [role="button"][tabindex="0"], article [role="button"][tabindex="0"] div',
  1221.         ],
  1222.         s: (m, node, rule) => {
  1223.           let data, a, n, img, src;
  1224.           if (location.pathname.startsWith('/p/')) {
  1225.             img = $('img[srcset], video', node.parentNode);
  1226.             if (img && (img.localName === 'video' || parseFloat(img.sizes) > 900))
  1227.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1228.           }
  1229.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1230.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1231.             data = a && tryCatch(this._getEdge, a.pathname.split('/')[2]);
  1232.           }
  1233.           rule.q = data && data.is_video && !data.video_url && 'meta[property="og:video"]';
  1234.           rule.g = a && $('[class*="Carousel"]', a) && rule._g;
  1235.           rule.follow = !data && !rule.g;
  1236.           rule._data = data;
  1237.           rule._img = img;
  1238.           return (
  1239.             !a && !src ? false :
  1240.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1' : ''}` :
  1241.                 data.video_url || data.display_url);
  1242.         },
  1243.         c: (html, doc, node, rule) =>
  1244.           tryCatch(rule._getCaption, rule._data) || (rule._img || 0).alt || '',
  1245.         anonymous: true,
  1246.         follow: true,
  1247.         _g(text, doc, url, m, rule) {
  1248.           const media = JSON.parse(text).graphql.shortcode_media;
  1249.           const items = media.edge_sidecar_to_children.edges.map(e => ({
  1250.             url: e.node.video_url || e.node.display_url,
  1251.           }));
  1252.           items.title = tryCatch(rule._getCaption, media) || '';
  1253.           return items;
  1254.         },
  1255.         _getCaption: data => data && data.edge_media_to_caption.edges[0].node.text,
  1256.         _getEdge: shortcode => unsafeWindow._sharedData.entry_data.ProfilePage[0].graphql.user
  1257.             .edge_owner_to_timeline_media.edges.find(e => e.node.shortcode === shortcode).node,
  1258.       },
  1259.       ...dotDomain.endsWith('.reddit.com') && [{
  1260.         u: '||i.reddituploads.com/',
  1261.       }, {
  1262.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1263.         s: (m, node) => $propUp(node, 'data-url'),
  1264.       }, {
  1265.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1266.         s: 'https://i$1',
  1267.       }] || [],
  1268.       dotDomain.endsWith('.tumblr.com') && {
  1269.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1270.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1271.         follow: true,
  1272.       },
  1273.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1274.         e: 'a.media-item, a.js-media-image-link',
  1275.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1276.         follow: true,
  1277.       },
  1278.       dotDomain.endsWith('.twitter.com') && {
  1279.         e: '.grid-tweet > .media-overlay',
  1280.         s: (m, node) => node.previousElementSibling.src,
  1281.         follow: true,
  1282.       },
  1283.     ];
  1284.  
  1285.     const main = [
  1286.       {
  1287.         r: /[/?=](https?[^&]+)/,
  1288.         s: '$1',
  1289.         follow: true,
  1290.         onerror: 'skip',
  1291.       },
  1292.       {
  1293.         u: [
  1294.           '||500px.com/photo/',
  1295.           '||cl.ly/',
  1296.           '||cweb-pix.com/',
  1297.           '||ibb.co/',
  1298.           '||imgcredit.xyz/image/',
  1299.         ],
  1300.         r: /\.\w+\/.+/,
  1301.         q: 'meta[property="og:image"]',
  1302.       },
  1303.       {
  1304.         u: 'attachment.php',
  1305.         r: /attachment\.php.+attachmentid/,
  1306.       },
  1307.       {
  1308.         u: '||abload.de/image',
  1309.         q: '#image',
  1310.       },
  1311.       {
  1312.         u: '||deviantart.com/art/',
  1313.         s: (m, node) =>
  1314.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1315.             '' :
  1316.             m.input,
  1317.         q: [
  1318.           '#download-button[href*=".jpg"]',
  1319.           '#download-button[href*=".jpeg"]',
  1320.           '#download-button[href*=".gif"]',
  1321.           '#download-button[href*=".png"]',
  1322.           '#gmi-ResViewSizer_fullimg',
  1323.           'img.dev-content-full',
  1324.         ],
  1325.       },
  1326.       {
  1327.         u: '||dropbox.com/s',
  1328.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1329.         q: (text, doc) =>
  1330.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1331.       },
  1332.       {
  1333.         r: /[./]ebay\.[^/]+\/itm\//,
  1334.         q: text =>
  1335.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1336.             .replace(/~~60_\d+/, '~~60_57'),
  1337.       },
  1338.       {
  1339.         u: '||i.ebayimg.com/',
  1340.         s: (m, node) =>
  1341.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1342.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1343.       },
  1344.       {
  1345.         u: [
  1346.           '||fastpic.ru/big',
  1347.           '||fastpic.ru/thumb',
  1348.         ],
  1349.         r: /\/\/(?:i(\d+)\.)?([^/]+\/)(big|thumb|view)\/([^.]+?)\.(\w+)/,
  1350.         s: (m, node, rule) => {
  1351.           const a = node.closest('[href*="fastpic.ru"]');
  1352.           const am = a && rule.r.exec(decodeURIComponent(a.href)) || [];
  1353.           const p = a && am[4].split('/');
  1354.           return `https://i${am[1] || m[1] || am[3] === 'view' && p[0]}.${m[2]}big/${
  1355.             am[3] === 'big' ? am[4] : m[4]}.${am[5] || m[5]}?noht=1`;
  1356.         },
  1357.         xhr: () => 'https://fastpic.ru',
  1358.       },
  1359.       {
  1360.         u: '||fastpic.ru/view/',
  1361.         q: 'img[src*="/big/"]',
  1362.         xhr: true,
  1363.       },
  1364.       {
  1365.         u: '||facebook.com/',
  1366.         r: /photo\.php|[^/]+\/photos\//,
  1367.         s: (m, node) =>
  1368.           node.id === 'fbPhotoImage' ? false :
  1369.             /gradient\.png$/.test(m.input) ? '' :
  1370.               m.input.replace('www.facebook.com', 'mbasic.facebook.com'),
  1371.         q: [
  1372.           'div + span > a:first-child:not([href*="tag_faces"])',
  1373.           'div + span > a[href*="tag_faces"] ~ a',
  1374.         ],
  1375.         rect: '#fbProfileCover',
  1376.       },
  1377.       {
  1378.         u: '||fbcdn.',
  1379.         r: /fbcdn.+?[0-9]+_([0-9]+)_[0-9]+_[a-z]\.(jpg|png)/,
  1380.         s: m =>
  1381.           dotDomain.endsWith('.facebook.com') &&
  1382.           tryCatch(() => unsafeWindow.PhotoSnowlift.getInstance().stream.cache.image[m[1]].url) ||
  1383.           false,
  1384.         manual: true,
  1385.       },
  1386.       {
  1387.         u: ['||fbcdn-', 'fbcdn.net/'],
  1388.         r: /(https?:\/\/(fbcdn-[-\w.]+akamaihd|[-\w.]+?fbcdn)\.net\/[-\w/.]+?)_[a-z]\.(jpg|png)(\?[0-9a-zA-Z0-9=_&]+)?/,
  1389.         s: (m, node) => {
  1390.           if (node.id === 'fbPhotoImage') {
  1391.             const a = $('a.fbPhotosPhotoActionsItem[href$="dl=1"]', doc.body);
  1392.             if (a) return a.href.includes(m.input.match(/[0-9]+_[0-9]+_[0-9]+/)[0]) ? '' : a.href;
  1393.           }
  1394.           if (m[4])
  1395.             return false;
  1396.           const pn = node.parentNode;
  1397.           if (pn.outerHTML.includes('/hovercard/'))
  1398.             return '';
  1399.           if (node.outerHTML.includes('profile') && pn.parentNode.href.includes('/photo'))
  1400.             return false;
  1401.           return m[1].replace(/\/[spc][\d.x]+/g, '').replace('/v/', '/') + '_n.' + m[3];
  1402.         },
  1403.         rect: '.photoWrap',
  1404.       },
  1405.       {
  1406.         u: '||flickr.com/photos/',
  1407.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1408.         s: m =>
  1409.           m.input.indexOf('/sizes/') < 0 ?
  1410.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1411.             false,
  1412.         q: (text, doc) => {
  1413.           const links = $$('.sizes-list a', doc);
  1414.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1415.         },
  1416.         follow: true,
  1417.       },
  1418.       {
  1419.         u: '||flickr.com/photos/',
  1420.         r: /\/sizes\//,
  1421.         q: '#allsizes-photo > img',
  1422.       },
  1423.       {
  1424.         u: '||gfycat.com/',
  1425.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1426.         s: 'https://$1$3',
  1427.         q: [
  1428.           'meta[content$=".webm"]',
  1429.           '#webmsource',
  1430.           'source[src$=".webm"]',
  1431.         ],
  1432.       },
  1433.       {
  1434.         u: [
  1435.           '||googleusercontent.com/proxy',
  1436.           '||googleusercontent.com/gadgets/proxy',
  1437.         ],
  1438.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1439.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1440.       },
  1441.       {
  1442.         u: [
  1443.           '||googleusercontent.com/',
  1444.           '||ggpht.com/',
  1445.         ],
  1446.         s: (m, node) =>
  1447.           m.input.includes('webcache.') ||
  1448.           node.outerHTML.match(/favicons\?|\b(Ol Rf Ep|Ol Zb ag|Zb HPb|Zb Gtb|Rf Pg|ho PQc|Uk wi hE|go wi Wh|we D0b|Bea)\b/) ||
  1449.           node.matches('.g-hovercard *, a[href*="profile_redirector"] > img') ?
  1450.             '' :
  1451.             m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1452.               .replace(/=[-\w]+([&#].*|$)/, ''),
  1453.       },
  1454.       {
  1455.         u: '||gravatar.com/',
  1456.         r: /([a-z0-9]{32})/,
  1457.         s: 'https://gravatar.com/avatar/$1?s=200',
  1458.       },
  1459.       {
  1460.         u: '//gyazo.com/',
  1461.         r: /\.com\/\w{32,}/,
  1462.         q: 'meta[name="twitter:image"]',
  1463.         xhr: true,
  1464.       },
  1465.       {
  1466.         u: '||hostingkartinok.com/show-image.php',
  1467.         q: '.image img',
  1468.       },
  1469.       {
  1470.         u: [
  1471.           '||imagecurl.com/images/',
  1472.           '||imagecurl.com/viewer.php',
  1473.         ],
  1474.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1475.         s: 'https://imagecurl.com/images/$1$2$3',
  1476.       },
  1477.       {
  1478.         u: '||imagebam.com/image/',
  1479.         q: 'meta[property="og:image"]',
  1480.         tabfix: true,
  1481.         xhr: hostname.includes('planetsuzy'),
  1482.       },
  1483.       {
  1484.         u: '||imageban.ru/thumbs',
  1485.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1486.         s: '$1out$2/$3/$4',
  1487.       },
  1488.       {
  1489.         u: [
  1490.           '||imageban.ru/show',
  1491.           '||imageban.net/show',
  1492.           '||ibn.im/',
  1493.         ],
  1494.         q: '#img_main',
  1495.       },
  1496.       {
  1497.         u: '||imageshack.us/img',
  1498.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1499.         s: 'https://$2/download/$1/$3$4',
  1500.       },
  1501.       {
  1502.         u: '||imageshack.us/i/',
  1503.         q: '#share-dl',
  1504.       },
  1505.       {
  1506.         u: '||imageteam.org/img',
  1507.         q: 'img[alt="image"]',
  1508.       },
  1509.       {
  1510.         u: [
  1511.           '||imagetwist.com/',
  1512.           '||imageshimage.com/',
  1513.         ],
  1514.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1515.         q: 'img.pic',
  1516.         xhr: true,
  1517.       },
  1518.       {
  1519.         u: '||imageupper.com/i/',
  1520.         q: '#img',
  1521.         xhr: true,
  1522.       },
  1523.       {
  1524.         u: '||imagevenue.com/img.php',
  1525.         q: '#thepic',
  1526.       },
  1527.       {
  1528.         u: '||imagezilla.net/show/',
  1529.         q: '#photo',
  1530.         xhr: true,
  1531.       },
  1532.       {
  1533.         u: [
  1534.           '||images-na.ssl-images-amazon.com/images/',
  1535.           '||media-imdb.com/images/',
  1536.         ],
  1537.         r: /images\/.+?\.jpg/,
  1538.         s: '/V1\\.?_.+?\\.//g',
  1539.       },
  1540.       {
  1541.         u: '||imgbox.com/',
  1542.         r: /\.com\/([a-z0-9]+)$/i,
  1543.         q: '#img',
  1544.         xhr: hostname !== 'imgbox.com',
  1545.       },
  1546.       {
  1547.         u: '||imgclick.net/',
  1548.         r: /\.net\/(\w+)/,
  1549.         q: 'img.pic',
  1550.         xhr: true,
  1551.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1552.       },
  1553.       {
  1554.         u: [
  1555.           '||imgflip.com/i/',
  1556.           '||imgflip.com/gif/',
  1557.         ],
  1558.         r: /\/(i|gif)\/([^/?#]+)/,
  1559.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1560.       },
  1561.       {
  1562.         u: [
  1563.           '||imgur.com/a/',
  1564.           '||imgur.com/gallery/',
  1565.           '||imgur.com/t/',
  1566.         ],
  1567.         g: async (text, doc, url, m, rule, node, cb) => {
  1568.           // simplified extraction of JSON as it occupies only one line
  1569.           if (!/(?:mergeConfig\('gallery',\s*|Imgur\.Album\.getInstance\()[\s\S]*?[,\s{"'](?:image|album)\s*:\s*({[^\r\n]+?}),?[\r\n]/.test(text))
  1570.             return;
  1571.           const info = JSON.parse(RegExp.$1);
  1572.           let images = info.is_album ? info.album_images.images : [info];
  1573.           if (info.num_images > images.length) {
  1574.             const u = `https://imgur.com/ajaxalbums/getimages/${info.hash}/hit.json?all=true`;
  1575.             images = JSON.parse((await Remoting.gmXhr(u)).responseText).data.images;
  1576.           }
  1577.           const items = [];
  1578.           for (const img of images || []) {
  1579.             const u = `https://i.imgur.com/${img.hash}`;
  1580.             items.push({
  1581.               url: img.ext === '.gif' && img.animated !== false ?
  1582.                 [`${u}.webm`, `${u}.mp4`, u] :
  1583.                 u + img.ext,
  1584.               desc: [img.title, img.description].filter(Boolean).join(' - '),
  1585.             });
  1586.           }
  1587.           if (images && info.is_album && !`${items[0].desc || ''}`.includes(info.title))
  1588.             items.title = info.title;
  1589.           cb(items);
  1590.         },
  1591.         css: '.post > .hover { display:none!important; }',
  1592.       },
  1593.       {
  1594.         u: '||imgur.com/',
  1595.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1596.         s: 'gallery',
  1597.         g: (text, doc, url, m) =>
  1598.           m[2].split(',').map(id => ({
  1599.             url: `https://i.${m[1]}${id}.jpg`,
  1600.           })),
  1601.       },
  1602.       {
  1603.         u: '||imgur.com/',
  1604.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.([a-z]+))/i,
  1605.         s: (m, node) => {
  1606.           if (/memegen|random|register|search|signin/.test(m.input))
  1607.             return '';
  1608.           const a = node.closest('a');
  1609.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1610.             return false;
  1611.           const id = m[3].replace(/(.{7})[bhm]$/, '$1');
  1612.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1613.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1614.           return ext === 'webm' ?
  1615.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1616.             u + ext;
  1617.         },
  1618.       },
  1619.       {
  1620.         u: [
  1621.           '||instagr.am/p/',
  1622.           '||instagram.com/p/',
  1623.         ],
  1624.         s: m => m.input.substr(0, m.input.lastIndexOf('/')) + '/?__a=1',
  1625.         q: text => {
  1626.           const m = JSON.parse(text).graphql.shortcode_media;
  1627.           return m.video_url || m.display_url;
  1628.         },
  1629.         rect: 'div.PhotoGridMediaItem',
  1630.         c: text => {
  1631.           const m = JSON.parse(text).graphql.shortcode_media.edge_media_to_caption.edges[0];
  1632.           return m === undefined ? '(no caption)' : m.node.text;
  1633.         },
  1634.       },
  1635.       {
  1636.         u: [
  1637.           '||livememe.com/',
  1638.           '||lvme.me/',
  1639.         ],
  1640.         r: /\.\w+\/([^.]+)$/,
  1641.         s: 'http://i.lvme.me/$1.jpg',
  1642.       },
  1643.       {
  1644.         u: '||lostpic.net/image',
  1645.         q: '.image-viewer-image img',
  1646.       },
  1647.       {
  1648.         u: '||makeameme.org/meme/',
  1649.         r: /\/meme\/([^/?#]+)/,
  1650.         s: 'https://media.makeameme.org/created/$1.jpg',
  1651.       },
  1652.       {
  1653.         u: '||photobucket.com/',
  1654.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  1655.         s: 'https://i$1$3',
  1656.         xhr: !dotDomain.endsWith('.photobucket.com'),
  1657.       },
  1658.       {
  1659.         u: '||piccy.info/view3/',
  1660.         r: /(.+?\/view3)\/(.*)\//,
  1661.         s: '$1/$2/orig/',
  1662.         q: '#mainim',
  1663.       },
  1664.       {
  1665.         u: '||pimpandhost.com/image/',
  1666.         r: /(.+?\/image\/[0-9]+)/,
  1667.         s: '$1?size=original',
  1668.         q: 'img.original',
  1669.       },
  1670.       {
  1671.         u: [
  1672.           '||pixroute.com/',
  1673.           '||imgspice.com/',
  1674.         ],
  1675.         r: /\.html$/,
  1676.         q: 'img[id]',
  1677.         xhr: true,
  1678.       },
  1679.       {
  1680.         u: '||postima',
  1681.         r: /postima?ge?\.org\/image\/\w+/,
  1682.         q: [
  1683.           'a[href*="dl="]',
  1684.           '#main-image',
  1685.         ],
  1686.       },
  1687.       {
  1688.         u: [
  1689.           '||prntscr.com/',
  1690.           '||prnt.sc/',
  1691.         ],
  1692.         r: /\.\w+\/.+/,
  1693.         q: 'meta[property="og:image"]',
  1694.         xhr: true,
  1695.       },
  1696.       {
  1697.         u: '||radikal.ru/',
  1698.         r: /\.ru\/(fp|.+\.html)/,
  1699.         q: text => text.match(/http:\/\/[a-z0-9]+\.radikal\.ru[a-z0-9/]+\.(jpg|gif|png)/i)[0],
  1700.       },
  1701.       {
  1702.         u: '||tumblr.com',
  1703.         r: /_500\.jpg/,
  1704.         s: ['/_500/_1280/', ''],
  1705.       },
  1706.       {
  1707.         u: '||twimg.com/',
  1708.         r: /\/profile_images/i,
  1709.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  1710.       },
  1711.       {
  1712.         u: '||twimg.com/media/',
  1713.         r: /.+?format=(jpe?g|png|gif)/i,
  1714.         s: '$0&name=large',
  1715.       },
  1716.       {
  1717.         u: '||twimg.com/1/proxy',
  1718.         r: /t=([^&_]+)/i,
  1719.         s: m => atob(m[1]).match(/http.+/),
  1720.       },
  1721.       {
  1722.         u: '||pic.twitter.com/',
  1723.         r: /\.com\/[a-z0-9]+/i,
  1724.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  1725.         follow: true,
  1726.       },
  1727.       {
  1728.         u: '||twitpic.com/',
  1729.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  1730.         s: 'https://twitpic.com/show/large/$2',
  1731.       },
  1732.       {
  1733.         u: '||upix.me/files',
  1734.         s: '/#//',
  1735.       },
  1736.       {
  1737.         u: '||wiki',
  1738.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  1739.         s: '/\\/thumb(?=\\/)|' +
  1740.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  1741.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  1742.         xhr: !hostname.includes('wiki'),
  1743.       },
  1744.       {
  1745.         u: '||ytimg.com/vi/',
  1746.         r: /(.+?\/vi\/[^/]+)/,
  1747.         s: '$1/0.jpg',
  1748.         rect: '.video-list-item',
  1749.       },
  1750.       {
  1751.         u: '/viewer.php?file=',
  1752.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  1753.         s: '$1/images/$2',
  1754.         xhr: true,
  1755.       },
  1756.       {
  1757.         u: '/thumb_',
  1758.         r: /\/albums.+\/thumb_[^/]/,
  1759.         s: '/thumb_//',
  1760.       },
  1761.       {
  1762.         u: [
  1763.           '.th.jp',
  1764.           '.th.gif',
  1765.           '.th.png',
  1766.         ],
  1767.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  1768.         s: '$1$2',
  1769.         follow: true,
  1770.       },
  1771.       {
  1772.         r: /^[^?]+?\.(bmp|jpe?g?|gif|mp4|png|svg|web[mp])($|\?)/i,
  1773.       },
  1774.     ];
  1775.  
  1776.     /** @type mpiv.HostRule[] */
  1777.     Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean);
  1778.   },
  1779.  
  1780.   format(rule, {expand} = {}) {
  1781.     const s = JSON.stringify(rule, null, ' ');
  1782.     return expand ?
  1783.       /* {"a": ...,
  1784.           "b": ...,
  1785.           "c": ...
  1786.          } */
  1787.       s.replace(/^{\s+/g, '{') :
  1788.       /* {"a": ..., "b": ..., "c": ...} */
  1789.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  1790.   },
  1791.  
  1792.   /** @returns mpiv.HostRule | Error | false | undefined */
  1793.   parse(rule) {
  1794.     const isBatchOp = this instanceof Map;
  1795.     try {
  1796.       if (typeof rule === 'string')
  1797.         rule = JSON.parse(rule);
  1798.       if ('d' in rule && typeof rule.d !== 'string')
  1799.         rule.d = undefined;
  1800.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  1801.         return false;
  1802.       const compileTo = isBatchOp ? rule : {};
  1803.       if (rule.r)
  1804.         compileTo.r = new RegExp(rule.r, 'i');
  1805.       if (RX_HAS_CODE.test(rule.s))
  1806.         compileTo.s = Util.newFunction('m', 'node', 'rule', rule.s);
  1807.       if (RX_HAS_CODE.test(rule.q))
  1808.         compileTo.q = Util.newFunction('text', 'doc', 'node', 'rule', rule.q);
  1809.       if (RX_HAS_CODE.test(rule.c))
  1810.         compileTo.c = Util.newFunction('text', 'doc', 'node', 'rule', rule.c);
  1811.       return rule;
  1812.     } catch (e) {
  1813.       if (!e.message.includes('unsafe-eval'))
  1814.         if (isBatchOp) {
  1815.           this.set(rule, e);
  1816.         } else {
  1817.           return e;
  1818.         }
  1819.     }
  1820.   },
  1821.  
  1822.   runC(text, doc = document) {
  1823.     const fn = Ruler.runCHandler[typeof ai.rule.c] || Ruler.runCHandler.default;
  1824.     ai.caption = fn(text, doc);
  1825.   },
  1826.  
  1827.   runCHandler: {
  1828.     function: (text, doc) => {
  1829.       // not specifying as a parameter's default value to get the html only when needed
  1830.       if (!text) text = doc.documentElement.outerHTML;
  1831.       return ai.rule.c(text, doc, ai.node, ai.rule);
  1832.     },
  1833.     string: (text, doc) => {
  1834.       const el = $many(ai.rule.c, doc);
  1835.       return !el ? '' :
  1836.         el.getAttribute('content') ||
  1837.         el.getAttribute('title') ||
  1838.         el.textContent;
  1839.     },
  1840.     default: () =>
  1841.       (ai.tooltip || 0).text ||
  1842.       ai.node.alt ||
  1843.       $propUp(ai.node, 'title') ||
  1844.       Remoting.getFileName(
  1845.         ai.node.tagName === ai.popup.tagName
  1846.           ? ai.url
  1847.           : ai.node.src || $propUp(ai.node, 'href')),
  1848.   },
  1849.  
  1850.   runQ(text, doc, docUrl) {
  1851.     let url;
  1852.     if (typeof ai.rule.q === 'function') {
  1853.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  1854.       if (Array.isArray(url)) {
  1855.         ai.urls = url.slice(1);
  1856.         url = url[0];
  1857.       }
  1858.     } else {
  1859.       const el = $many(ai.rule.q, doc);
  1860.       url = Remoting.findImageUrl(el, docUrl);
  1861.     }
  1862.     return url;
  1863.   },
  1864.  
  1865.   runS(node, rule, m) {
  1866.     let urls = [];
  1867.     for (const s of ensureArray(rule.s))
  1868.       urls.push(
  1869.         typeof s === 'string' ? Util.decodeUrl(Ruler.substituteSingle(s, m)) :
  1870.           typeof s === 'function' ? s(m, node, rule) :
  1871.             s);
  1872.     if (rule.q && urls.length > 1) {
  1873.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  1874.       return {skipRule: true};
  1875.     }
  1876.     if (Array.isArray(urls[0]))
  1877.       urls = urls[0];
  1878.     // `false` returned by "s" property means "skip this rule"
  1879.     // any other falsy value (like say "") means "stop all rules"
  1880.     return urls[0] === false ? {skipRule: true} : urls.map(Util.decodeUrl);
  1881.   },
  1882.  
  1883.   substituteSingle(s, m) {
  1884.     if (!m) return s;
  1885.     if (s.startsWith('/') && !s.startsWith('//')) {
  1886.       const mid = s.search(/[^\\]\//) + 1;
  1887.       const end = s.lastIndexOf('/');
  1888.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  1889.       return m.input.replace(re, s.slice(mid + 1, end));
  1890.     }
  1891.     if (m.length && s.includes('$')) {
  1892.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  1893.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  1894.         for (let i = maxLength; i >= 0; i--) {
  1895.           const part = num.slice(0, i) | 0;
  1896.           if (part < m.length)
  1897.             return (m[part] || '') + num.slice(i);
  1898.         }
  1899.         return text;
  1900.       });
  1901.     }
  1902.     return s;
  1903.   },
  1904. };
  1905.  
  1906. const RuleMatcher = {
  1907.  
  1908.   /** @returns ?mpiv.RuleMatchInfo */
  1909.   findForLink(a) {
  1910.     let url =
  1911.       a.getAttribute('data-expanded-url') ||
  1912.       a.getAttribute('data-full-url') ||
  1913.       a.getAttribute('data-url') ||
  1914.       a.href;
  1915.     if (url.startsWith('data:'))
  1916.       url = false;
  1917.     else if (url.includes('//t.co/'))
  1918.       url = 'http://' + a.textContent;
  1919.     return RuleMatcher.find(url, a);
  1920.   },
  1921.  
  1922.   /** @returns ?mpiv.RuleMatchInfo */
  1923.   find(url, node, {noHtml, skipRules} = {}) {
  1924.     const tn = node.tagName;
  1925.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  1926.     const isPicOrLink = isPic || tn === 'A';
  1927.     let m, html, urls;
  1928.     for (const rule of Ruler.rules) {
  1929.       const {e} = rule;
  1930.       if (e && !node.matches(e) || skipRules && skipRules.includes(rule))
  1931.         continue;
  1932.       const {r, u} = rule;
  1933.       if (r && !noHtml && rule.html && (isPicOrLink || e))
  1934.         m = r.exec(html || (html = node.outerHTML));
  1935.       else if (r || u)
  1936.         m = url && RuleMatcher.makeUrlMatch(url, node, rule, r, u);
  1937.       else
  1938.         m = url ? RuleMatcher.makeDummyMatch(url) : [];
  1939.       if (!m)
  1940.         continue;
  1941.       const {s} = rule;
  1942.       let hasS = s !== undefined;
  1943.       // a rule with follow:true for the currently hovered IMG produced a URL,
  1944.       // but we'll only allow it to match rules without 's' in the nested find call
  1945.       if (isPic && !hasS && !skipRules)
  1946.         continue;
  1947.       if (s === '')
  1948.         return {};
  1949.       hasS &= s !== 'gallery';
  1950.       urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  1951.       if (!urls.skipRule) {
  1952.         const url = urls[0];
  1953.         return !url ? {} :
  1954.           hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule) &&
  1955.             RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]}) ||
  1956.             RuleMatcher.makeInfo(urls, node, rule, m);
  1957.       }
  1958.     }
  1959.   },
  1960.  
  1961.   makeUrlMatch(url, node, rule, r, u) {
  1962.     let m;
  1963.     if (u) {
  1964.       u = rule._u || (rule._u = UrlMatcher(u));
  1965.       m = u.fn.call(u.this, url) && (r || RuleMatcher.makeDummyMatch(url));
  1966.     }
  1967.     return (m || !u) && r ? r.exec(url) : m;
  1968.   },
  1969.  
  1970.   makeDummyMatch(url) {
  1971.     const m = [url];
  1972.     m.index = 0;
  1973.     m.input = url;
  1974.     return m;
  1975.   },
  1976.  
  1977.   /** @returns mpiv.RuleMatchInfo */
  1978.   makeInfo(urls, node, rule, m) {
  1979.     const url = (`${urls[0]}`.startsWith('//') ? location.protocol : '') + urls[0];
  1980.     const xhr = cfg.xhr && rule.xhr;
  1981.     return {
  1982.       node,
  1983.       rule,
  1984.       url,
  1985.       urls: urls.length > 1 ? urls.slice(1) : null,
  1986.       match: m,
  1987.       gallery: rule.g && Gallery.makeParser(rule.g),
  1988.       post: typeof rule.post === 'function' ? rule.post(m) : rule.post,
  1989.       xhr: xhr != null ? xhr : isSecureContext && !url.startsWith(location.protocol),
  1990.     };
  1991.   },
  1992.  
  1993.   isFollowableUrl(url, rule) {
  1994.     const f = rule.follow;
  1995.     return typeof f === 'function' ? f(url) : f;
  1996.   },
  1997. };
  1998.  
  1999. const Remoting = {
  2000.  
  2001.   gmXhr(url, opts = {}) {
  2002.     if (ai.req)
  2003.       tryCatch.call(ai.req, ai.req.abort);
  2004.     return new Promise((resolve, reject) => {
  2005.       ai.req = GM_xmlhttpRequest({
  2006.         url,
  2007.         method: 'GET',
  2008.         anonymous: (ai.rule || {}).anonymous,
  2009.         timeout: 30e3,
  2010.         ...opts,
  2011.         onload: done,
  2012.         onerror: done,
  2013.         ontimeout() {
  2014.           ai.req = null;
  2015.           reject(`Timeout fetching ${url}`);
  2016.         },
  2017.       });
  2018.       function done(r) {
  2019.         ai.req = null;
  2020.         if (r.status < 400 && !r.error)
  2021.           resolve(r);
  2022.         else
  2023.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2024.       }
  2025.     });
  2026.   },
  2027.  
  2028.   async getDoc(url) {
  2029.     const r = await (!ai.post ?
  2030.       Remoting.gmXhr(url) :
  2031.       Remoting.gmXhr(url, {
  2032.         method: 'POST',
  2033.         data: ai.post,
  2034.         headers: {
  2035.           'Content-Type': 'application/x-www-form-urlencoded',
  2036.           'Referer': url,
  2037.         },
  2038.       }));
  2039.     r.doc = new DOMParser().parseFromString(r.responseText, 'text/html');
  2040.     return r;
  2041.   },
  2042.  
  2043.   async getImage(url, pageUrl) {
  2044.     ai.bufBar = false;
  2045.     ai.bufStart = now();
  2046.     const response = await Remoting.gmXhr(url, {
  2047.       responseType: 'blob',
  2048.       headers: {
  2049.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2050.         Referer: pageUrl || (typeof ai.xhr === 'function' ? ai.xhr() : url),
  2051.       },
  2052.       onprogress: Remoting.getImageProgress,
  2053.     });
  2054.     Bar.set(false);
  2055.     const type = Remoting.guessMimeType(response);
  2056.     let b = response.response;
  2057.     if (!b) throw 'Empty response';
  2058.     if (b.type !== type)
  2059.       b = b.slice(0, b.size, type);
  2060.     return ai.xhr === 'blob'
  2061.       ? URL.createObjectURL(b)
  2062.       : Remoting.blobToDataUrl(b);
  2063.   },
  2064.  
  2065.   getImageProgress(e) {
  2066.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2067.       ai.bufBar = true;
  2068.     if (ai.bufBar) {
  2069.       const pct = e.loaded / e.total * 100 | 0;
  2070.       const size = e.total / 1024 | 0;
  2071.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2072.     }
  2073.   },
  2074.  
  2075.   async findRedirect() {
  2076.     try {
  2077.       const {finalUrl} = await Remoting.gmXhr(ai.url, {
  2078.         method: 'HEAD',
  2079.         headers: {
  2080.           'Referer': location.href.split('#', 1)[0],
  2081.         },
  2082.       });
  2083.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2084.       if (!info || !info.url)
  2085.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2086.       Object.assign(ai, info);
  2087.       App.startSingle();
  2088.     } catch (e) {
  2089.       App.handleError(e);
  2090.     }
  2091.   },
  2092.  
  2093.   async saveFile() {
  2094.     const url = ai.popup.src || ai.popup.currentSrc;
  2095.     let name = Remoting.getFileName(ai.imageUrl || url);
  2096.     if (!name.includes('.'))
  2097.       name += '.jpg';
  2098.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2099.       $create('a', {href: url, download: name})
  2100.         .dispatchEvent(new MouseEvent('click'));
  2101.     } else {
  2102.       Status.set('+loading');
  2103.       const onload = () => Status.set('-loading');
  2104.       GM_download({
  2105.         url,
  2106.         name,
  2107.         headers: {Referer: url},
  2108.         onerror: e => {
  2109.           Bar.set(`Could not download ${name}: ${e.error || e.message || e}.`, 'error');
  2110.           onload();
  2111.         },
  2112.         onprogress: Remoting.getImageProgress,
  2113.         onload,
  2114.       });
  2115.     }
  2116.   },
  2117.  
  2118.   getFileName(url) {
  2119.     return decodeURIComponent(url).split('/').pop().replace(/[:#?].*/, '');
  2120.   },
  2121.  
  2122.   blobToDataUrl(blob) {
  2123.     return new Promise((resolve, reject) => {
  2124.       const fr = new FileReader();
  2125.       fr.onload = () => resolve(fr.result);
  2126.       fr.onerror = reject;
  2127.       fr.readAsDataURL(blob);
  2128.     });
  2129.   },
  2130.  
  2131.   guessMimeType({responseHeaders, finalUrl}) {
  2132.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2133.         !RegExp.$1.includes('text/plain'))
  2134.       return RegExp.$1;
  2135.     const ext = /\.([a-z0-9]+?)($|\?|#)/i.exec(finalUrl) ? RegExp.$1 : 'jpg';
  2136.     switch (ext.toLowerCase()) {
  2137.       case 'bmp': return 'image/bmp';
  2138.       case 'gif': return 'image/gif';
  2139.       case 'jpe': return 'image/jpeg';
  2140.       case 'jpeg': return 'image/jpeg';
  2141.       case 'jpg': return 'image/jpeg';
  2142.       case 'mp4': return 'video/mp4';
  2143.       case 'png': return 'image/png';
  2144.       case 'svg': return 'image/svg+xml';
  2145.       case 'tif': return 'image/tiff';
  2146.       case 'tiff': return 'image/tiff';
  2147.       case 'webm': return 'video/webm';
  2148.       default: return 'application/octet-stream';
  2149.     }
  2150.   },
  2151.  
  2152.   findImageUrl(n, url) {
  2153.     if (!n) return;
  2154.     let html;
  2155.     const path =
  2156.       n.getAttribute('src') ||
  2157.       n.getAttribute('data-m4v') ||
  2158.       n.getAttribute('href') ||
  2159.       n.getAttribute('content') ||
  2160.       (html = n.outerHTML).includes('http') &&
  2161.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2162.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2163.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2164.   },
  2165. };
  2166.  
  2167. const Status = {
  2168.  
  2169.   set(status) {
  2170.     if (!status && !cfg.globalStatus) {
  2171.       ai.node && ai.node.removeAttribute(STATUS_ATTR);
  2172.       return;
  2173.     }
  2174.     const prefix = cfg.globalStatus ? PREFIX : '';
  2175.     const action = status && /^[+-]/.test(status) && status[0];
  2176.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2177.     const el = cfg.globalStatus ? doc.documentElement :
  2178.       name === 'edge' ? ai.popup :
  2179.         ai.node;
  2180.     if (!el) return;
  2181.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2182.     const oldValue = (el.getAttribute(attr) || '').trim();
  2183.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2184.     switch (action) {
  2185.       case '-':
  2186.         cls.delete(name);
  2187.         break;
  2188.       case false:
  2189.         for (const c of cls)
  2190.           if (c.startsWith(prefix) && c !== name)
  2191.             cls.delete(c);
  2192.       // fallthrough to +
  2193.       case '+':
  2194.         if (name)
  2195.           cls.add(name);
  2196.         break;
  2197.     }
  2198.     const newValue = [...cls].join(' ');
  2199.     if (newValue !== oldValue)
  2200.       el.setAttribute(attr, newValue);
  2201.   },
  2202.  
  2203.   loading(force) {
  2204.     if (!force) {
  2205.       clearTimeout(ai.timerStatus);
  2206.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2207.     } else if (!ai.popupLoaded) {
  2208.       Status.set('+loading');
  2209.     }
  2210.   },
  2211. };
  2212.  
  2213. const UrlMatcher = (() => {
  2214.   // string-to-regexp escaped chars
  2215.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2216.   // rx for '^' symbol in simple url match
  2217.   const RX_SEP = /[^\w%._-]/y;
  2218.   const RXS_SEP = RX_SEP.source;
  2219.   return match => {
  2220.     const results = [];
  2221.     for (const s of ensureArray(match)) {
  2222.       const pinDomain = s.startsWith('||');
  2223.       const pinStart = !pinDomain && s.startsWith('|');
  2224.       const endSep = s.endsWith('^');
  2225.       let fn;
  2226.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2227.       if (needle.includes('^')) {
  2228.         const plain = needle.split('^').reduce(getLongest);
  2229.         const rx = new RegExp(
  2230.           (pinStart ? '^' : '') +
  2231.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2232.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2233.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2234.         needle = [plain, rx];
  2235.         fn = regexp;
  2236.       } else if (pinStart) {
  2237.         fn = endSep ? equals : starts;
  2238.       } else if (pinDomain) {
  2239.         const slashPos = needle.indexOf('/');
  2240.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2241.         needle = [needle, domain, slashPos > 0, endSep];
  2242.         fn = startsDomainPrescreen;
  2243.       } else if (endSep) {
  2244.         fn = ends;
  2245.       } else {
  2246.         fn = has;
  2247.       }
  2248.       results.push({fn, this: needle});
  2249.     }
  2250.     return results.length > 1 ?
  2251.       {fn: checkArray, this: results} :
  2252.       results[0];
  2253.   };
  2254.   function checkArray(s) {
  2255.     return this.some(checkArrayItem, s);
  2256.   }
  2257.   function checkArrayItem(item) {
  2258.     return item.fn.call(item.this, this);
  2259.   }
  2260.   function ends(s) {
  2261.     return s.endsWith(this) || (
  2262.       s.length > this.length &&
  2263.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2264.       endsWithSep(s));
  2265.   }
  2266.   function endsWithSep(s, pos = s.length - 1) {
  2267.     RX_SEP.lastIndex = pos;
  2268.     return RX_SEP.test(s);
  2269.   }
  2270.   function equals(s) {
  2271.     return s.startsWith(this) && (
  2272.       s.length === this.length ||
  2273.       s.length === this.length + 1 && endsWithSep(s));
  2274.   }
  2275.   function getLongest(max, part) {
  2276.     return part.length > max.length ? part : max;
  2277.   }
  2278.   function has(s) {
  2279.     return s.includes(this);
  2280.   }
  2281.   function regexp(s) {
  2282.     return s.includes(this[0]) && this[1].test(s);
  2283.   }
  2284.   function starts(s) {
  2285.     return s.startsWith(this);
  2286.   }
  2287.   function startsDomainPrescreen(url) {
  2288.     return url.includes(this[0]) && startsDomain.call(this, url);
  2289.   }
  2290.   function startsDomain(url) {
  2291.     let hostStart = url.indexOf('//');
  2292.     if (hostStart && url[hostStart - 1] !== ':')
  2293.       return;
  2294.     hostStart = hostStart < 0 ? 0 : hostStart + 2;
  2295.     const host = url.slice(hostStart, (url.indexOf('/', hostStart) + 1 || url.length + 1) - 1);
  2296.     const [needle, domain, pinDomainEnd, endSep] = this;
  2297.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2298.     for (; ; start++) {
  2299.       start = host.indexOf(domain, start);
  2300.       if (start < 0)
  2301.         return;
  2302.       if (!start || host[start - 1] === '.')
  2303.         break;
  2304.     }
  2305.     start += hostStart;
  2306.     if (url.lastIndexOf(needle, start) !== start)
  2307.       return;
  2308.     const end = start + needle.length;
  2309.     return !endSep || end === host.length || end === url.length || endsWithSep(url, end);
  2310.   }
  2311. })();
  2312.  
  2313. const Util = {
  2314.  
  2315.   addStyle(name, css) {
  2316.     const id = `${PREFIX}style:${name}`;
  2317.     const el = doc.getElementById(id) ||
  2318.                css && $create('style', {id});
  2319.     if (!el) return;
  2320.     if (el.textContent !== css)
  2321.       el.textContent = css;
  2322.     if (el.parentElement !== doc.head)
  2323.       doc.head.appendChild(el);
  2324.     return el;
  2325.   },
  2326.  
  2327.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2328.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2329.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2330.   },
  2331.  
  2332.   decodeHtmlEntities(s) {
  2333.     return s
  2334.       .replace(/&quot;/g, '"')
  2335.       .replace(/&apos;/g, '\'')
  2336.       .replace(/&lt;/g, '<')
  2337.       .replace(/&gt;/g, '>')
  2338.       .replace(/&amp;/g, '&');
  2339.   },
  2340.  
  2341.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2342.   decodeUrl(url) {
  2343.     if (!url) return url;
  2344.     const iPct = url.indexOf('%');
  2345.     const iColon = url.indexOf(':');
  2346.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2347.       decodeURIComponent(url) :
  2348.       url;
  2349.   },
  2350.  
  2351.   deepEqual(a, b) {
  2352.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2353.       return a === b;
  2354.     if (Array.isArray(a)) {
  2355.       return Array.isArray(b) &&
  2356.         a.length === b.length &&
  2357.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2358.     }
  2359.     const keys = Object.keys(a);
  2360.     return keys.length === Object.keys(b).length &&
  2361.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2362.   },
  2363.  
  2364.   forceLayout(node) {
  2365.     // eslint-disable-next-line no-unused-expressions
  2366.     node.clientHeight;
  2367.   },
  2368.  
  2369.   formatError(e, rule) {
  2370.     const message =
  2371.       e.message ||
  2372.       e.readyState && 'Request failed.' ||
  2373.       e.type === 'error' && `File can't be displayed.${
  2374.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2375.       }` ||
  2376.       e;
  2377.     const m = [
  2378.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold;color:yellow'],
  2379.       ['', 'font-weight:normal;color:unset'],
  2380.     ];
  2381.     m.push(...[
  2382.       ['Node: %o', ai.node],
  2383.       ['Rule: %o', rule],
  2384.       ai.url && ['URL: %s', ai.url],
  2385.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2386.     ].filter(Boolean));
  2387.     return {
  2388.       message,
  2389.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2390.       consoleArgs: m.map(([, v]) => v),
  2391.     };
  2392.   },
  2393.  
  2394.   isVideoUrl(url) {
  2395.     return url.startsWith('data:video') ||
  2396.            !url.startsWith('data:') && /\.(webm|mp4)($|\?)/.test(url);
  2397.   },
  2398.  
  2399.   newFunction(...args) {
  2400.     try {
  2401.       return App.NOP || new Function(...args);
  2402.     } catch (e) {
  2403.       if (!e.message.includes('unsafe-eval'))
  2404.         throw e;
  2405.       App.NOP = () => {};
  2406.       return App.NOP;
  2407.     }
  2408.   },
  2409.  
  2410.   rel2abs(rel, abs = location.href) {
  2411.     try {
  2412.       return rel.startsWith('data:') ? rel :
  2413.         rel.startsWith('blob:') ? '' : // blobs don't work because they're usually revoked
  2414.           new URL(rel, abs).href;
  2415.     } catch (e) {
  2416.       return rel;
  2417.     }
  2418.   },
  2419.  
  2420.   suppressTooltip() {
  2421.     for (const node of [
  2422.       ai.node.parentNode,
  2423.       ai.node,
  2424.       ai.node.firstElementChild,
  2425.     ]) {
  2426.       const t = (node || 0).title;
  2427.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2428.         ai.tooltip = {node, text: t};
  2429.         node.title = '';
  2430.         break;
  2431.       }
  2432.     }
  2433.   },
  2434.  
  2435.   tabFixUrl() {
  2436.     return ai.rule.tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2437.            navigator.userAgent.includes('Gecko/') &&
  2438.            flattenHtml(`data:text/html;charset=utf8,
  2439.       <style>
  2440.         body {
  2441.           margin: 0;
  2442.           padding: 0;
  2443.           background: #222;
  2444.         }
  2445.         .fit {
  2446.           overflow: hidden
  2447.         }
  2448.         .fit > img {
  2449.           max-width: 100vw;
  2450.           max-height: 100vh;
  2451.         }
  2452.         body > img {
  2453.           margin: auto;
  2454.           position: absolute;
  2455.           left: 0;
  2456.           right: 0;
  2457.           top: 0;
  2458.           bottom: 0;
  2459.         }
  2460.       </style>
  2461.       <body class=fit>
  2462.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2463.       </body>
  2464.     `).replace(/#/g, '%23');
  2465.   },
  2466. };
  2467.  
  2468. function setup({rule} = {}) {
  2469.   if (window !== top) return;
  2470.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2471.   // FF is superslow with textareas, bugzil.la/190147
  2472.   let root = (elConfig || 0).shadowRoot;
  2473.   let {blankRuleElement} = setup;
  2474.   /** @type NodeList */
  2475.   const UI = new Proxy({}, {
  2476.     get(_, id) {
  2477.       return root.getElementById(id);
  2478.     },
  2479.   });
  2480.   if (!rule || !elConfig)
  2481.     init(new Config({save: true}));
  2482.   if (rule)
  2483.     installRule(rule);
  2484.  
  2485.   function closeSetup(event) {
  2486.     const isApply = this.id === 'apply';
  2487.     if (event && (this.id === 'ok' || isApply)) {
  2488.       cfg = collectConfig({save: true, clone: isApply});
  2489.       Ruler.init();
  2490.       if (isApply) {
  2491.         renderCustomScales(cfg);
  2492.         return;
  2493.       }
  2494.     }
  2495.     $remove(elConfig);
  2496.     elConfig = null;
  2497.   }
  2498.  
  2499.   function collectConfig({save, clone} = {}) {
  2500.     let data = {};
  2501.     for (const el of $$('input[id], select[id]', root))
  2502.       data[el.id] = el.type === 'checkbox' ? el.checked :
  2503.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  2504.           el.value || '';
  2505.     Object.assign(data, {
  2506.       css: UI.css.value.trim(),
  2507.       delay: UI.delay.valueAsNumber * 1000,
  2508.       hosts: collectRules(),
  2509.       scale: clamp(UI.scale.valueAsNumber / 100, 0, 1) + 1,
  2510.       scales: UI.scales.value
  2511.         .trim()
  2512.         .split(/[,;]*\s+/)
  2513.         .map(x => x.replace(',', '.'))
  2514.         .filter(x => !isNaN(parseFloat(x))),
  2515.     });
  2516.     if (clone)
  2517.       data = JSON.parse(JSON.stringify(data));
  2518.     return new Config({data, save});
  2519.   }
  2520.  
  2521.   function collectRules() {
  2522.     return [...UI.rules.children]
  2523.       .map(el => [el.value.trim(), el[RULE]])
  2524.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  2525.       .map(([s, json]) => json || s)
  2526.       .filter(Boolean);
  2527.   }
  2528.  
  2529.   function exportSettings(e) {
  2530.     dropEvent(e);
  2531.     const txt = $create('textarea', {
  2532.       style: 'opacity:0; position:absolute',
  2533.       value: JSON.stringify(collectConfig(), null, '  '),
  2534.     });
  2535.     root.appendChild(txt);
  2536.     txt.select();
  2537.     txt.focus();
  2538.     document.execCommand('copy');
  2539.     e.target.focus();
  2540.     txt.remove();
  2541.     UI.exportNotification.hidden = false;
  2542.     setTimeout(() => (UI.exportNotification.hidden = true), 1000);
  2543.   }
  2544.  
  2545.   function importSettings(e) {
  2546.     dropEvent(e);
  2547.     const s = prompt('Paste settings:');
  2548.     if (s)
  2549.       init(new Config({data: s}));
  2550.   }
  2551.  
  2552.   function checkRule({target: el}) {
  2553.     let json, error, title;
  2554.     const prev = el.previousElementSibling;
  2555.     if (el.value) {
  2556.       json = Ruler.parse(el.value);
  2557.       error = json instanceof Error && (json.message || String(json));
  2558.       const invalidDomain = !error && json && typeof json.d === 'string' &&
  2559.         !/^[-.a-z0-9]*$/i.test(json.d);
  2560.       title = [invalidDomain && 'Disabled due to invalid characters in "d"', error]
  2561.         .filter(Boolean).join('\n');
  2562.       el.classList.toggle('invalid-domain', invalidDomain);
  2563.       if (!prev)
  2564.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2565.     } else if (prev) {
  2566.       prev.focus();
  2567.       el.remove();
  2568.     }
  2569.     el[RULE] = !error && json;
  2570.     el.title = title;
  2571.     el.setCustomValidity(error || '');
  2572.   }
  2573.  
  2574.   function focusRule({type, target: el, relatedTarget: from}) {
  2575.     if (el === this)
  2576.       return;
  2577.     if (type === 'paste') {
  2578.       setTimeout(() => focusRule.call(this, {target: el}));
  2579.       return;
  2580.     }
  2581.     if (el[RULE])
  2582.       el.value = Ruler.format(el[RULE], {expand: true});
  2583.     const h = clamp(el.scrollHeight, 15, elConfig.clientHeight / 4);
  2584.     if (h > el.offsetHeight)
  2585.       el.style.minHeight = h + 'px';
  2586.     if (!this.contains(from))
  2587.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  2588.     if (from) {
  2589.       from.style.minHeight = '';
  2590.       if (from[RULE])
  2591.         from.value = Ruler.format(from[RULE]);
  2592.     }
  2593.   }
  2594.  
  2595.   function installRule(rule) {
  2596.     const inputs = UI.rules.children;
  2597.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  2598.     if (!el) {
  2599.       el = inputs[0];
  2600.       el[RULE] = rule;
  2601.       el.value = Ruler.format(rule);
  2602.       el.hidden = false;
  2603.       const i = Math.max(0, collectRules().indexOf(rule));
  2604.       inputs[i].insertAdjacentElement('afterend', el);
  2605.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2606.     }
  2607.     const rect = el.getBoundingClientRect();
  2608.     if (rect.bottom < 0 ||
  2609.         rect.bottom > el.parentNode.offsetHeight)
  2610.       el.scrollIntoView();
  2611.     el.classList.add('highlight');
  2612.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  2613.     el.focus();
  2614.   }
  2615.  
  2616.   function init(config) {
  2617.     $remove(elConfig);
  2618.     elConfig = $create('div', {contentEditable: true});
  2619.     root = elConfig.attachShadow({mode: 'open'});
  2620.     root.innerHTML = createConfigHtml();
  2621.     initEvents();
  2622.     renderValues(config);
  2623.     renderCustomScales(config);
  2624.     initRules(config);
  2625.     doc.body.appendChild(elConfig);
  2626.     requestAnimationFrame(() => {
  2627.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elConfig.clientHeight / 4) + 'px';
  2628.     });
  2629.   }
  2630.  
  2631.   function initEvents() {
  2632.     UI.apply.onclick = UI.cancel.onclick = UI.ok.onclick = UI.x.onclick = closeSetup;
  2633.     UI.export.onclick = exportSettings;
  2634.     UI.import.onclick = importSettings;
  2635.     UI.install.onclick = setupRuleInstaller;
  2636.     const {/** @type {HTMLTextAreaElement} */ cssApp} = UI;
  2637.     UI.reveal.onclick = e => {
  2638.       e.preventDefault();
  2639.       cssApp.hidden = !cssApp.hidden;
  2640.       if (!cssApp.hidden) {
  2641.         if (!cssApp.value) {
  2642.           App.updateStyles();
  2643.           cssApp.value = App.globalStyle.trim();
  2644.           cssApp.setSelectionRange(0, 0);
  2645.         }
  2646.         cssApp.focus();
  2647.       }
  2648.     };
  2649.     UI.start.onchange = function () {
  2650.       UI.delay.closest('label').hidden =
  2651.         UI.preload.closest('label').hidden =
  2652.           this.value !== 'auto';
  2653.     };
  2654.     UI.start.onchange();
  2655.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  2656.     // color
  2657.     for (const el of $$('[type="color"]', root)) {
  2658.       el.oninput = colorOnInput;
  2659.       el.elSwatch = el.nextElementSibling;
  2660.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  2661.       el.elOpacity.elColor = el;
  2662.     }
  2663.     function colorOnInput() {
  2664.       this.elSwatch.style.setProperty('--color',
  2665.         Util.color(this.value, this.elOpacity.valueAsNumber));
  2666.     }
  2667.     // range
  2668.     for (const el of $$('[type="range"]', root)) {
  2669.       el.oninput = rangeOnInput;
  2670.       el.onblur = rangeOnBlur;
  2671.       el.addEventListener('focusin', rangeOnFocus);
  2672.     }
  2673.     function rangeOnBlur(e) {
  2674.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  2675.         this.elEdit.onblur(e);
  2676.     }
  2677.     function rangeOnFocus() {
  2678.       if (this.elEdit) return;
  2679.       const {min, max, step, value} = this;
  2680.       this.elEdit = $create('input', {
  2681.         value, min, max, step,
  2682.         className: 'range-edit',
  2683.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  2684.         type: 'number',
  2685.         elRange: this,
  2686.         onblur: rangeEditOnBlur,
  2687.         oninput: rangeEditOnInput,
  2688.       });
  2689.       this.insertAdjacentElement('afterend', this.elEdit);
  2690.     }
  2691.     function rangeOnInput() {
  2692.       this.title = (this.dataset.title || '').replace('$', this.value);
  2693.       if (this.elColor) this.elColor.oninput();
  2694.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  2695.     }
  2696.     // range-edit
  2697.     function rangeEditOnBlur(e) {
  2698.       if (e.relatedTarget !== this.elRange) {
  2699.         this.remove();
  2700.         this.elRange.elEdit = null;
  2701.       }
  2702.     }
  2703.     function rangeEditOnInput() {
  2704.       this.elRange.valueAsNumber = this.valueAsNumber;
  2705.       this.elRange.oninput();
  2706.     }
  2707.     // prevent the main page from interpreting key presses in inputs as hotkeys
  2708.     // which may happen since it sees only the outer <div> in the event |target|
  2709.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  2710.   }
  2711.  
  2712.   function initRules(config) {
  2713.     const rules = UI.rules;
  2714.     rules.addEventListener('input', checkRule);
  2715.     if (!isFF) rules.addEventListener('focusin', focusRule);
  2716.     if (!isFF) rules.addEventListener('paste', focusRule);
  2717.     blankRuleElement =
  2718.       setup.blankRuleElement =
  2719.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  2720.     for (const rule of config.hosts || []) {
  2721.       const el = blankRuleElement.cloneNode();
  2722.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  2723.       rules.appendChild(el);
  2724.       checkRule({target: el});
  2725.     }
  2726.     const search = UI.search;
  2727.     search.oninput = () => {
  2728.       setup.search = search.value;
  2729.       const s = search.value.toLowerCase();
  2730.       for (const el of rules.children)
  2731.         el.hidden = s && !el.value.toLowerCase().includes(s);
  2732.     };
  2733.     search.value = setup.search || '';
  2734.     if (search.value)
  2735.       search.oninput();
  2736.   }
  2737.  
  2738.   function renderCustomScales(config) {
  2739.     UI.scales.value = config.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  2740.   }
  2741.  
  2742.   function renderValues(config) {
  2743.     for (const el of $$('input[id], select[id], textarea[id]', root))
  2744.       if (el.id in config)
  2745.         el[el.type === 'checkbox' ? 'checked' : 'value'] = config[el.id];
  2746.     for (const el of $$('input[type="range"]', root))
  2747.       el.oninput();
  2748.     for (const el of $$('a[href^="http"]', root))
  2749.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  2750.     UI.delay.valueAsNumber = config.delay / 1000;
  2751.     UI.scale.valueAsNumber = Math.round(clamp(config.scale - 1, 0, 1) * 100);
  2752.   }
  2753. }
  2754.  
  2755. async function setupRuleInstaller(e) {
  2756.   dropEvent(e);
  2757.   const parent = this.parentElement;
  2758.   parent.children.installLoading.hidden = false;
  2759.   this.remove();
  2760.   let rules;
  2761.  
  2762.   try {
  2763.     rules = extractRules(await Remoting.getDoc(this.href));
  2764.     const selector = $create('select', {
  2765.       size: 8,
  2766.       style: 'width: 100%',
  2767.       ondblclick: e => e.target !== selector && maybeSetup(e),
  2768.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  2769.     });
  2770.     selector.append(...rules.map(renderRule));
  2771.     selector.selectedIndex = findMatchingRuleIndex();
  2772.     // remove "name" since the installed rules don't need it
  2773.     for (const r of rules)
  2774.       delete r.name;
  2775.     parent.children.installLoading.remove();
  2776.     parent.children.installHint.hidden = false;
  2777.     parent.appendChild(selector);
  2778.     requestAnimationFrame(() => {
  2779.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  2780.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  2781.     });
  2782.   } catch (e) {
  2783.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  2784.   }
  2785.  
  2786.   function extractRules({doc}) {
  2787.     const code = $('script', doc).textContent;
  2788.     // sort by name
  2789.     return JSON.parse(code.match(/var\s+rules\s*=\s*(\[.+]);?[\r\n]/)[1])
  2790.       .filter(r => !r.d || hostname.includes(r.d))
  2791.       .sort((a, b) =>
  2792.         (a = a.name.toLowerCase()) < (b = b.name.toLowerCase()) ? -1 :
  2793.           a > b ? 1 :
  2794.             0);
  2795.   }
  2796.  
  2797.   function findMatchingRuleIndex() {
  2798.     const dottedHost = `.${hostname}.`;
  2799.     const weighParts = (n, part) => n + (dottedHost.includes(`.${part}.`) && part.length);
  2800.     const weighName = name => name.toLowerCase().split(/[^a-z\d.-]+/i).reduce(weighParts, 0);
  2801.     return rules.reduce((max, {d, name}, index) => {
  2802.       const count = !!(d && hostname.includes(d)) * 10 + weighName(name);
  2803.       return count > max.count ? {count, index} : max;
  2804.     }, {count: 0, index: 0}).index;
  2805.   }
  2806.  
  2807.   function renderRule(r) {
  2808.     const {name, ...copy} = r;
  2809.     return $create('option', {
  2810.       textContent: name,
  2811.       title: Ruler.format(copy, {expand: true})
  2812.         .replace(/^{|\s*}$/g, '')
  2813.         .split('\n')
  2814.         .slice(0, 12)
  2815.         .map(renderTitleLine)
  2816.         .filter(Boolean)
  2817.         .join('\n'),
  2818.     });
  2819.   }
  2820.  
  2821.   function renderTitleLine(line, i, arr) {
  2822.     return (
  2823.       // show ... on 10th line if there are more lines
  2824.       i === 9 && arr.length > 10 ? '...' :
  2825.         i > 10 ? '' :
  2826.           // truncate to 100 chars
  2827.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  2828.             // strip the leading space
  2829.             .replace(/^\s/, ''));
  2830.   }
  2831.  
  2832.   function maybeSetup(e) {
  2833.     if (!modKeyPressed(e))
  2834.       setup({rule: rules[e.currentTarget.selectedIndex]});
  2835.   }
  2836. }
  2837.  
  2838. function createConfigHtml() {
  2839.   const MPIV_BASE_URL = 'https://w9p.co/userscripts/mpiv/';
  2840.   const scalesHint = 'Leave it empty and click Apply or Save to restore the default values.';
  2841.   const trimLeft = s => s.trim().replace(/\n\s+/g, '\r');
  2842.   return flattenHtml(`
  2843. <style>
  2844.   :host {
  2845.     all: initial !important;
  2846.     position: fixed !important;
  2847.     z-index: 2147483647 !important;
  2848.     top: 20px !important;
  2849.     right: 20px !important;
  2850.     padding: 1.5em !important;
  2851.     color: #000 !important;
  2852.     background: #eee !important;
  2853.     box-shadow: 5px 5px 25px 2px #000 !important;
  2854.     width: 32em !important;
  2855.     border: 1px solid black !important;
  2856.     display: flex !important;
  2857.     flex-direction: column !important;
  2858.   }
  2859.   main {
  2860.     font: 12px/15px sans-serif;
  2861.   }
  2862.   ul {
  2863.     max-height: calc(100vh - 200px);
  2864.     margin: 10px 0 15px 0;
  2865.     padding: 0;
  2866.     list-style: none;
  2867.   }
  2868.   li {
  2869.     margin: 0;
  2870.     padding: .25em 0;
  2871.   }
  2872.   li.options {
  2873.     display: flex;
  2874.     align-items: center;
  2875.     justify-content: space-between;
  2876.   }
  2877.   li.row {
  2878.     flex-wrap: wrap;
  2879.     justify-content: flex-start;
  2880.   }
  2881.   li.row label {
  2882.     flex-direction: row;
  2883.     align-items: center;
  2884.   }
  2885.   li.row input {
  2886.     margin-right: .25em;
  2887.   }
  2888.   li.stretch label {
  2889.     flex: 1;
  2890.     white-space: nowrap;
  2891.   }
  2892.   li.stretch label > span {
  2893.     display: flex;
  2894.     flex-direction: row;
  2895.     flex: 1;
  2896.   }
  2897.   label {
  2898.     display: inline-flex;
  2899.     flex-direction: column;
  2900.   }
  2901.   label:not(:last-child) {
  2902.     margin-right: 1em;
  2903.   }
  2904.   input, select {
  2905.     min-height: 1.6em;
  2906.     box-sizing: border-box;
  2907.   }
  2908.   input[type=checkbox] {
  2909.     margin-left: 0;
  2910.   }
  2911.   input[type=number] {
  2912.     width: 4em;
  2913.   }
  2914.   input:not([type=checkbox])  {
  2915.     padding: 0 .25em;
  2916.   }
  2917.   input[type=range] {
  2918.     flex: 1;
  2919.     width: 100%;
  2920.     margin: 0 .25em;
  2921.     padding: 0;
  2922.     filter: saturate(0);
  2923.     opacity: .5;
  2924.   }
  2925.   u + input[type=range] {
  2926.     max-width: 3em;
  2927.   }
  2928.   input[type=range]:hover {
  2929.     filter: none;
  2930.     opacity: 1;
  2931.   }
  2932.   input[type=color] {
  2933.     position: absolute;
  2934.     width: calc(1.5em + 2px);
  2935.     opacity: 0;
  2936.     cursor: pointer;
  2937.   }
  2938.   u {
  2939.     display: inline-block;
  2940.     position: relative;
  2941.     width: 1.5em;
  2942.     height: 1.5em;
  2943.     border: 1px solid #888;
  2944.     pointer-events: none;
  2945.     color: #888;
  2946.     background-image:
  2947.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  2948.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  2949.     background-size: .5em .5em;
  2950.     background-position: 0 0, .25em .25em;
  2951.   }
  2952.   u::after {
  2953.     position: absolute;
  2954.     top: 0;
  2955.     left: 0;
  2956.     right: 0;
  2957.     bottom: 0;
  2958.     content: "";
  2959.     background-color: var(--color);
  2960.   }
  2961.   .range-edit {
  2962.     position: absolute;
  2963.     box-shadow: 0 0.25em 1em #000;
  2964.     z-index: 99;
  2965.   }
  2966.   #rules input,
  2967.   textarea {
  2968.     flex: 1;
  2969.     resize: vertical;
  2970.     margin: 1px 0;
  2971.     font: 11px/1.25 Consolas, monospace;
  2972.   }
  2973.   :invalid {
  2974.     background-color: #f002;
  2975.     border-color: #800;
  2976.   }
  2977.   code {
  2978.     font-weight: bold;
  2979.   }
  2980.   a {
  2981.     text-decoration: none;
  2982.   }
  2983.   a:hover {
  2984.     text-decoration: underline;
  2985.   }
  2986.   button {
  2987.     padding: .2em 1em;
  2988.     margin: 0 1em;
  2989.   }
  2990.   .column {
  2991.     display: flex;
  2992.     flex-direction: column;
  2993.   }
  2994.   .highlight {
  2995.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  2996.     animation-fill-mode: both;
  2997.   }
  2998.   #rules > * {
  2999.     word-break: break-all;
  3000.   }
  3001.   .invalid-domain {
  3002.     opacity: .5;
  3003.   }
  3004.   #x {
  3005.     position: absolute;
  3006.     top: 0;
  3007.     right: 0;
  3008.     padding: 4px 8px;
  3009.     cursor: pointer;
  3010.     user-select: none;
  3011.   }
  3012.   #x:hover {
  3013.     background-color: #8884;
  3014.   }
  3015.   #cssApp {
  3016.     color: seagreen;
  3017.   }
  3018.   #exportNotification {
  3019.     color: green;
  3020.     font-weight: bold;
  3021.     position: absolute;
  3022.     left: 0;
  3023.     right: 0;
  3024.     bottom: 2px;
  3025.   }
  3026.   #installHint {
  3027.     color: green;
  3028.   }
  3029.   @keyframes fade-in {
  3030.     from { background-color: deepskyblue }
  3031.     to {}
  3032.   }
  3033.   @media (prefers-color-scheme: dark) {
  3034.     :host {
  3035.       color: #aaa !important;
  3036.       background: #333 !important;
  3037.     }
  3038.     a {
  3039.       color: deepskyblue;
  3040.     }
  3041.     button {
  3042.       background: linear-gradient(-5deg, #333, #555);
  3043.       border: 1px solid #000;
  3044.       box-shadow: 0 2px 6px #181818;
  3045.       border-radius: 3px;
  3046.       cursor: pointer;
  3047.     }
  3048.     button:hover {
  3049.       background: linear-gradient(-5deg, #333, #666);
  3050.     }
  3051.     textarea, input, select {
  3052.       background: #111;
  3053.       color: #BBB;
  3054.       border: 1px solid #555;
  3055.     }
  3056.     input[type=checkbox] {
  3057.       filter: invert(1);
  3058.     }
  3059.     input[type=range] {
  3060.       filter: invert(1) saturate(0);
  3061.     }
  3062.     input[type=range]:hover {
  3063.       filter: invert(1);
  3064.     }
  3065.     @supports (-moz-appearance: none) {
  3066.       input[type=checkbox],
  3067.       input[type=range],
  3068.       input[type=range]:hover {
  3069.         filter: none;
  3070.       }
  3071.     }
  3072.     .range-edit {
  3073.       box-shadow: 0 .5em 1em .5em #000;
  3074.     }
  3075.     #cssApp {
  3076.       color: darkseagreen;
  3077.     }
  3078.     #installHint {
  3079.       color: greenyellow;
  3080.     }
  3081.   }
  3082. </style>
  3083. <main>
  3084.   <a href="${MPIV_BASE_URL}">${GM_info.script.name}</a>
  3085.   <div id=x>x</div>
  3086.   <ul class=column>
  3087.     <li class=options>
  3088.       <label>Popup shows on
  3089.         <select id=start>
  3090.           <option value=auto>automatically
  3091.           <option value=context>Right click / Ctrl
  3092.           <option value=ctrl>Ctrl
  3093.         </select>
  3094.       </label>
  3095.       <label>after, sec<input id=delay type=number min=0.05 max=10 step=0.05 title=seconds></label>
  3096.       <label title="(if the full version of the hovered image is ...% larger)">
  3097.         if larger, %<input id=scale type=number min=0 max=100 step=1>
  3098.       </label>
  3099.       <label>Zoom activates on
  3100.         <select id=zoom>
  3101.           <option value=context>Right click / Shift
  3102.           <option value=wheel>Wheel up / Shift
  3103.           <option value=shift>Shift
  3104.           <option value=auto>automatically
  3105.         </select>
  3106.       </label>
  3107.       <label>...and zooms to
  3108.         <select id=fit>
  3109.           <option value=all>fit to window
  3110.           <option value=large>fit if larger
  3111.           <option value=no>100%
  3112.           <option value="" title="Use custom scale factors">custom
  3113.         </select>
  3114.       </label>
  3115.     </li>
  3116.     <li class=options>
  3117.       <label>Zoom step, %<input id=zoomStep type=number min=100 max=400 step=1>
  3118.       </label>
  3119.       <label>When fully zoomed out:
  3120.         <select id=zoomOut>
  3121.           <option value=stay>stay in zoom mode
  3122.           <option value=auto>stay if still hovered
  3123.           <option value=unzoom>undo zoom mode
  3124.           <option value=close>close popup
  3125.         </select>
  3126.       </label>
  3127.       <label style="flex: 1" title="${trimLeft(`
  3128.         Scale factors to use when “zooms to” selector is set to “custom”.
  3129.         0 = fit to window,
  3130.         0! = same as 0 but also removes smaller values,
  3131.         * after a value marks the default zoom factor, for example: 1*
  3132.         The popup won't shrink below the image's natural size or window size for bigger mages.
  3133.         ${scalesHint}
  3134.       `)}">Custom scale factors:
  3135.         <input id=scales placeholder="${scalesHint}">
  3136.       </label>
  3137.     </li>
  3138.     <li class="options row">
  3139.       <label><input type=checkbox id=center>Always centered</label>
  3140.       <label title="Disable only if you spoof the HTTP headers yourself">
  3141.         <input type=checkbox id=xhr>Anti-hotlinking workaround
  3142.       </label>
  3143.       <label><input type=checkbox id=preload>Start preloading immediately</label>
  3144.       <label><input type=checkbox id=imgtab>Run in image tabs</label>
  3145.       <label title="Don't enable unless you explicitly use it in your custom CSS">
  3146.         <input type=checkbox id=globalStatus>Expose status on &lt;html&gt; node (may cause slowdowns)
  3147.       </label>
  3148.     </li>
  3149.     <li class="options stretch">
  3150.       <label>Background
  3151.         <span>
  3152.           <input id=uiBackgroundColor type=color><u></u>
  3153.           <input id=uiBackgroundOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3154.         </span>
  3155.       </label>
  3156.       <label>Border color, opacity, size
  3157.         <span>
  3158.           <input id=uiBorderColor type=color><u></u>
  3159.           <input id=uiBorderOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3160.           <input id=uiBorder type=range min=0 max=20 step=1 data-title="Border size: $px">
  3161.         </span>
  3162.       </label>
  3163.       <label>Shadow color, opacity, size
  3164.         <span>
  3165.           <input id=uiShadowColor type=color><u></u>
  3166.           <input id=uiShadowOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3167.           <input id=uiShadow type=range min=0 max=100 step=1 data-title="
  3168.             ${'Shadow blur radius: $px\n"0" disables the shadow.'}">
  3169.         </span>
  3170.       </label>
  3171.       <label>Padding
  3172.         <span><input id=uiPadding type=range min=0 max=100 step=1 data-title="Padding: $px"></span>
  3173.       </label>
  3174.       <label>Margin
  3175.         <span><input id=uiMargin type=range min=0 max=100 step=1 data-title="Margin: $px"></span>
  3176.       </label>
  3177.     </li>
  3178.     <li>
  3179.       <a href="${MPIV_BASE_URL}css.html">Custom CSS:</a>&nbsp;
  3180.       e.g. <b>#mpiv-popup { animation: none !important }</b>
  3181.       <a href="#" id=reveal style="float: right"
  3182.          title="You can copy parts of it to override them in your custom CSS">
  3183.          View the built-in CSS</a>
  3184.       <div class=column>
  3185.         <textarea id=css spellcheck=false></textarea>
  3186.         <textarea id=cssApp spellcheck=false hidden readonly rows=30></textarea>
  3187.       </div>
  3188.     </li>
  3189.     <li style="display: flex; justify-content: space-between;">
  3190.       <div><a href="${MPIV_BASE_URL}host_rules.html">Custom host rules:</a></div>
  3191.       <div style="white-space: nowrap">
  3192.         To disable, put any symbol except <code>a..z 0..9 - .</code><br>
  3193.         in "d" value, for example <code>"d": "!foo.com"</code>
  3194.       </div>
  3195.       <div>
  3196.         <input id=search type=search placeholder=Search style="width: 10em; margin-left: 1em">
  3197.       </div>
  3198.     </li>
  3199.     <li style="margin-left: -3px; margin-right: -3px; overflow-y: auto; padding-left: 3px; padding-right: 3px;">
  3200.       <div id=rules class=column>${
  3201.   isFF && /win/i.test(navigator.platform)
  3202.     ? '<input spellcheck=false>' // textareas in FF+Windows are like 100x slower than inputs
  3203.     : '<textarea rows=1 spellcheck=false></textarea>'}
  3204.       </div>
  3205.     </li>
  3206.     <li>
  3207.       <div hidden id=installLoading>Loading...</div>
  3208.       <div hidden id=installHint>Double-click the rule (or select and press Enter) to add it.
  3209.         Click <code>Apply</code> or <code>Save</code> to confirm.</div>
  3210.       <a href="${MPIV_BASE_URL}more_host_rules.html" id=install>Install rule from repository...</a>
  3211.     </li>
  3212.   </ul>
  3213.   <div style="text-align:center">
  3214.     <button id=ok accesskey=s>Save</button>
  3215.     <button id=apply accesskey=a>Apply</button>
  3216.     <button id=import style="margin-right: 0">Import</button>
  3217.     <button id=export style="margin-left: 0">Export</button>
  3218.     <button id=cancel>Cancel</button>
  3219.     <div id=exportNotification hidden>Copied to clipboard.</div>
  3220.   </div>
  3221. </main>`);
  3222. }
  3223.  
  3224. function createGlobalStyle() {
  3225.   App.globalStyle = /*language=CSS*/ (String.raw`
  3226. #\mpiv-bar {
  3227.   position: fixed;
  3228.   z-index: 2147483647;
  3229.   top: 0;
  3230.   left: 0;
  3231.   right: 0;
  3232.   opacity: 0;
  3233.   transition: opacity 1s ease .25s;
  3234.   text-align: center;
  3235.   font-family: sans-serif;
  3236.   font-size: 15px;
  3237.   font-weight: bold;
  3238.   background: #0005;
  3239.   color: white;
  3240.   padding: 4px 10px;
  3241.   text-shadow: .5px .5px 2px #000;
  3242. }
  3243. #\mpiv-bar.\mpiv-show {
  3244.   opacity: 1;
  3245. }
  3246. #\mpiv-bar[data-zoom]::after {
  3247.   content: " (" attr(data-zoom) ")";
  3248.   opacity: .8;
  3249. }
  3250. #\mpiv-popup.\mpiv-show {
  3251.   display: inline;
  3252. }
  3253. #\mpiv-popup {
  3254.   display: none;
  3255.   cursor: none;
  3256.   animation: .2s \mpiv-fadein both;
  3257.   transition: box-shadow .25s, background-color .25s;
  3258. ${App.popupStyleBase = `
  3259.   border: none;
  3260.   box-sizing: border-box;
  3261.   position: fixed;
  3262.   z-index: 2147483647;
  3263.   padding: 0;
  3264.   margin: 0;
  3265.   top: 0;
  3266.   left: 0;
  3267.   width: auto;
  3268.   height: auto;
  3269.   transform-origin: top left;
  3270.   max-width: none;
  3271.   max-height: none;
  3272. `}
  3273. }
  3274. #\mpiv-popup.\mpiv-show {
  3275.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3276.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3277.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3278.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3279. }
  3280. #\mpiv-popup.\mpiv-show[loaded] {
  3281.   background-color: ${Util.color('Background')};
  3282.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3283. }
  3284. #\mpiv-popup.\mpiv-zoom-max {
  3285.   image-rendering: pixelated;
  3286. }
  3287. @keyframes \mpiv-fadein {
  3288.   from {
  3289.     opacity: 0;
  3290.     border-color: transparent;
  3291.   }
  3292.   to {
  3293.     opacity: 1;
  3294.   }
  3295. }
  3296. ` + (cfg.globalStatus ? String.raw`
  3297. .\mpiv-loading:not(.\mpiv-preloading) * {
  3298.   cursor: progress !important;
  3299. }
  3300. .\mpiv-edge #\mpiv-popup {
  3301.   cursor: default;
  3302. }
  3303. .\mpiv-error * {
  3304.   cursor: not-allowed !important;
  3305. }
  3306. .\mpiv-ready *, .\mpiv-large * {
  3307.   cursor: zoom-in !important;
  3308. }
  3309. .\mpiv-shift * {
  3310.   cursor: default !important;
  3311. }
  3312. ` : String.raw`
  3313. #\mpiv-popup[\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]) {
  3314.   cursor: progress;
  3315. }
  3316. #\mpiv-popup[\mpiv-status~="edge"] {
  3317.   cursor: default;
  3318. }
  3319. #\mpiv-popup[\mpiv-status~="error"] {
  3320.   cursor: not-allowed;
  3321. }
  3322. #\mpiv-popup[\mpiv-status~="ready"],
  3323. #\mpiv-popup[\mpiv-status~="large"] {
  3324.   cursor: zoom-in;
  3325. }
  3326. #\mpiv-popup[\mpiv-status~="shift"] {
  3327.   cursor: default;
  3328. }
  3329. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3330.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3331.   return App.globalStyle;
  3332. }
  3333.  
  3334. //#region Global utilities
  3335. const clamp = (v, min, max) =>
  3336.   v < min ? min : v > max ? max : v;
  3337.  
  3338. const compareNumbers = (a, b) =>
  3339.   a - b;
  3340.  
  3341. const flattenHtml = str =>
  3342.   str.trim()
  3343.     .replace(/\n\s*/g, '')
  3344.     .replace(/\x20?([:>])\x20/g, '$1');
  3345.  
  3346. const dropEvent = e =>
  3347.   (e.preventDefault(), e.stopPropagation());
  3348.  
  3349. const ensureArray = v =>
  3350.   Array.isArray(v) ? v : [v];
  3351.  
  3352. const modKeyPressed = e =>
  3353.   e.altKey || e.shiftKey || e.ctrlKey || e.metaKey;
  3354.  
  3355. const now = performance.now.bind(performance);
  3356.  
  3357. const sumProps = (...props) =>
  3358.   props.reduce((sum, v) => sum + (parseFloat(v) || 0), 0);
  3359.  
  3360. const tryCatch = function (fn, ...args) {
  3361.   try {
  3362.     return fn.apply(this, args);
  3363.   } catch (e) {}
  3364. };
  3365.  
  3366. const $ = (sel, node = doc) =>
  3367.   node.querySelector(sel) || false;
  3368.  
  3369. const $$ = (sel, node = doc) =>
  3370.   node.querySelectorAll(sel);
  3371.  
  3372. const $create = (tag, props) =>
  3373.   Object.assign(doc.createElement(tag), props);
  3374.  
  3375. const $css = (el, props) =>
  3376.   Object.entries(props).forEach(([k, v]) =>
  3377.     el.style.setProperty(k, v, 'important'));
  3378.  
  3379. const $many = (q, doc) =>
  3380.   q && ensureArray(q).reduce((el, sel) => el || $(sel, doc), null);
  3381.  
  3382. const $prop = (sel, prop, node = doc) =>
  3383.   (node = $(sel, node)) && node[prop] || '';
  3384.  
  3385. const $propUp = (node, prop) =>
  3386.   (node = node.closest(`[${prop}]`)) &&
  3387.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) ||
  3388.   '';
  3389.  
  3390. const $remove = node =>
  3391.   node && node.remove();
  3392. //#endregion
  3393.  
  3394. //#region Init
  3395. const isFF = CSS.supports('-moz-appearance', 'none');
  3396. const AudioContext = window.AudioContext || function () {};
  3397.  
  3398. cfg = new Config({save: true});
  3399.  
  3400. App.enabled = true;
  3401. (cb => doc.body ? cb() : document.addEventListener('DOMContentLoaded', cb, {once: true}))(() => {
  3402.   const el = doc.body.firstElementChild;
  3403.   App.isImageTab = el && el === doc.body.lastElementChild && el.matches('img, video');
  3404.   App.enabled = cfg.imgtab || !App.isImageTab;
  3405. });
  3406.  
  3407. if (window === top)
  3408.   GM_registerMenuCommand('MPIV: configure', setup);
  3409. doc.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  3410.  
  3411. if (['greasyfork.org', 'w9p.co', 'github.com'].includes(hostname)) {
  3412.   doc.addEventListener('click', e => {
  3413.     const el = e.target.closest('blockquote, code, pre');
  3414.     const text = el && el.textContent.trim() || '';
  3415.     let rule;
  3416.     if (!e.button && !modKeyPressed(e) &&
  3417.         text.startsWith('{') && text.endsWith('}') &&
  3418.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text) &&
  3419.         (rule = tryCatch(JSON.parse, text)) &&
  3420.         Object.keys(rule).some(k => /^[degqrsu]$/.test(k))) {
  3421.       setup({rule});
  3422.       dropEvent(e);
  3423.     }
  3424.   });
  3425. }
  3426.  
  3427. window.addEventListener('message', App.onMessage);
  3428. //#endregion