☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

当前为 2020-03-14 提交的版本，查看 最新版本。

  1. //#region Meta
  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     1.1.7
  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. //#endregion
  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}${k}`})));
  56. const WHEEL_EVENT = 'onwheel' in doc ? 'wheel' : 'mousewheel';
  57. // time for volatile things to settle down meanwhile we postpone action
  58. // examples: loading image from cache, quickly moving mouse over one element to another
  59. const SETTLE_TIME = 50;
  60. // used to detect JS code in host rules
  61. const RX_HAS_CODE = /(^|[^-\w])return[\W\s]/;
  62. const ZOOM_MAX = 16;
  63. const ZOOM_STEP = 1.25;
  64.  
  65. //#endregion
  66.  
  67. const App = {
  68.  
  69.   activate(info, event) {
  70.     const {match, node, rule, url} = info;
  71.     const force = event.ctrlKey;
  72.     const scale = !force && Calc.scaleGain(url, node.parentNode);
  73.     if (elConfig) console.info(Object.assign({node, rule, url, match}, scale && {scale}));
  74.     if (scale && scale < cfg.scale)
  75.       return;
  76.     if (ai.node)
  77.       App.deactivate();
  78.     ai = info;
  79.     ai.gNum = 0;
  80.     ai.zooming = cfg.css.includes(`${PREFIX}zooming`);
  81.     Util.suppressTooltip();
  82.     Calc.updateViewSize();
  83.     Events.toggle(true);
  84.     Events.trackMouse(event);
  85.     if (force) {
  86.       App.start();
  87.     } else if (cfg.start === 'auto' && !rule.manual) {
  88.       App.belate();
  89.     } else {
  90.       Status.set('ready');
  91.     }
  92.   },
  93.  
  94.   belate() {
  95.     if (cfg.preload) {
  96.       ai.preloadStart = now();
  97.       App.start();
  98.       Status.set('+preloading');
  99.       setTimeout(Status.set, cfg.delay, '-preloading');
  100.     } else {
  101.       ai.timer = setTimeout(App.start, cfg.delay);
  102.     }
  103.   },
  104.  
  105.   checkProgress({start} = {}) {
  106.     const p = ai.popup;
  107.     if (p) {
  108.       const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  109.       const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  110.       if (h) {
  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 = `${PREFIX}show`;
  132.     p.removeAttribute('style');
  133.     Calc.updateExtras();
  134.     Calc.updateScales();
  135.     Status.set(false);
  136.     const willZoom = cfg.zoom === 'auto' || App.isImageTab && cfg.imgtab;
  137.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  138.     if (willMove)
  139.       Popup.move();
  140.     Bar.updateTitle();
  141.     if (!ai.bar)
  142.       Bar.updateFileInfo();
  143.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  144.                ai.nheight > p.clientHeight + ai.extras.h;
  145.     if (ai.large)
  146.       Status.set('large');
  147.     // FF renders a blank bg+border first; I couldn't find a proper solution
  148.     if (p.complete && isFF && ai.large)
  149.       p.style.backgroundImage = `url('${p.src}')`;
  150.   },
  151.  
  152.   deactivate({wait} = {}) {
  153.     App.stopTimers();
  154.     if (ai.req)
  155.       tryCatch.call(ai.req, ai.req.abort);
  156.     if (ai.tooltip)
  157.       ai.tooltip.node.title = ai.tooltip.text;
  158.     Status.set(false);
  159.     Bar.set(false);
  160.     Events.toggle(false);
  161.     Popup.destroy();
  162.     if (wait) {
  163.       App.enabled = false;
  164.       setTimeout(App.enable, 200);
  165.     }
  166.     ai = {rule: {}};
  167.   },
  168.  
  169.   enable() {
  170.     App.enabled = true;
  171.   },
  172.  
  173.   handleError(e, rule = ai.rule) {
  174.     if (isGoogleImages && cfg.xhr && !ai.xhr) {
  175.       ai.xhr = true;
  176.       console.debug('Retrying in XHR mode', ai.url);
  177.       App.startSingle();
  178.       return;
  179.     }
  180.     const fe = Util.formatError(e, rule);
  181.     if (!rule || !ai.urls || !ai.urls.length)
  182.       console.warn(fe.consoleFormat, ...fe.consoleArgs);
  183.     if (ai.urls && ai.urls.length) {
  184.       ai.url = ai.urls.shift();
  185.       if (ai.url) {
  186.         App.stopTimers();
  187.         App.startSingle();
  188.       } else {
  189.         App.deactivate();
  190.       }
  191.     } else if (ai.node) {
  192.       Status.set('error');
  193.       Bar.set(fe.message, 'error');
  194.     }
  195.   },
  196.  
  197.   /** @param {MessageEvent} e */
  198.   onMessage(e) {
  199.     if (typeof e.data === 'string' && e.data === MSG.getViewSize) {
  200.       for (const el of doc.getElementsByTagName('iframe')) {
  201.         if (el.contentWindow === e.source) {
  202.           const [w, h] = Calc.frameSize(el, window);
  203.           e.source.postMessage(`${MSG.viewSize}:${w}:${h}`, '*');
  204.           return;
  205.         }
  206.       }
  207.     }
  208.   },
  209.  
  210.   /** @param {MessageEvent} e */
  211.   onMessageChild(e) {
  212.     if (e.source === parent && typeof e.data === 'string' && e.data.startsWith(MSG.viewSize)) {
  213.       window.removeEventListener('message', App.onMessageChild);
  214.       const [w, h] = e.data.split(':').slice(1).map(parseFloat);
  215.       if (w && h) ai.view = {w, h};
  216.     }
  217.   },
  218.  
  219.   start() {
  220.     // check explicitly as the cursor may have moved into an iframe so mouseout wasn't reported
  221.     if (!ai.node.matches(':hover')) {
  222.       App.deactivate();
  223.       return;
  224.     }
  225.     App.updateStyles();
  226.     if (ai.gallery)
  227.       App.startGallery();
  228.     else
  229.       App.startSingle();
  230.   },
  231.  
  232.   startSingle() {
  233.     Status.loading();
  234.     ai.imageUrl = null;
  235.     if (ai.rule.follow && !ai.rule.q && !ai.rule.s) {
  236.       Remoting.findRedirect();
  237.     } else if (ai.rule.q && !Array.isArray(ai.urls)) {
  238.       App.startFromQ();
  239.     } else {
  240.       Ruler.runC();
  241.       Popup.create(ai.url);
  242.     }
  243.   },
  244.  
  245.   async startFromQ() {
  246.     try {
  247.       const {responseText, doc, finalUrl} = await Remoting.getDoc(ai.url);
  248.       const url = Ruler.runQ(responseText, doc, finalUrl);
  249.       if (!url)
  250.         throw 'File not found.';
  251.       Ruler.runC(responseText, doc);
  252.       if (RuleMatcher.isFollowableUrl(url, ai.rule)) {
  253.         const info = RuleMatcher.find(url, ai.node, {noHtml: true});
  254.         if (!info || !info.url)
  255.           throw `Couldn't follow URL: ${url}`;
  256.         Object.assign(ai, info);
  257.         App.startSingle();
  258.       } else {
  259.         Popup.create(url, finalUrl);
  260.       }
  261.     } catch (e) {
  262.       App.handleError(e);
  263.     }
  264.   },
  265.  
  266.   async startGallery() {
  267.     Status.loading();
  268.     try {
  269.       const startUrl = ai.url;
  270.       const p = ai.rule.s === 'gallery' ? {} : await Remoting.getDoc(startUrl);
  271.       const items = await new Promise(resolve => {
  272.         const it = ai.gallery(p.responseText, p.doc, p.finalUrl, ai.match, ai.rule, resolve);
  273.         if (Array.isArray(it))
  274.           resolve(it);
  275.       });
  276.       // bail out if the gallery's async callback took too long
  277.       if (ai.url !== startUrl) return;
  278.       ai.gNum = items.length;
  279.       ai.gItems = items.length && items;
  280.       if (ai.gItems) {
  281.         ai.gIndex = Gallery.findIndex(ai.url);
  282.         setTimeout(Gallery.next);
  283.       } else {
  284.         throw 'Empty gallery';
  285.       }
  286.     } catch (e) {
  287.       App.handleError(e);
  288.     }
  289.   },
  290.  
  291.   stopTimers() {
  292.     for (const timer of ['timer', 'timerBar', 'timerStatus'])
  293.       clearTimeout(ai[timer]);
  294.     clearInterval(ai.timerProgress);
  295.   },
  296.  
  297.   toggleZoom({keepScale} = {}) {
  298.     const p = ai.popup;
  299.     if (!p || !ai.scales || ai.scales.length < 2)
  300.       return;
  301.     ai.zoomed = !ai.zoomed;
  302.     ai.scale = ai.zoomed && Calc.scaleForFirstZoom(keepScale) || ai.scales[0];
  303.     if (ai.zooming)
  304.       p.classList.add(`${PREFIX}zooming`);
  305.     Popup.move();
  306.     Bar.updateTitle();
  307.     Status.set(ai.zoomed ? 'zoom' : false);
  308.     if (!ai.zoomed)
  309.       Bar.updateFileInfo();
  310.     return ai.zoomed;
  311.   },
  312.  
  313.   updateStyles() {
  314.     Util.addStyle('global',
  315.       (App.globalStyle || createGlobalStyle()) +
  316.       (cfg.css.includes('{') ? cfg.css : `#${PREFIX}-popup {${(cfg.css)}}`));
  317.     Util.addStyle('rule', ai.rule.css || '');
  318.   },
  319. };
  320.  
  321. const Bar = {
  322.  
  323.   set(label, className) {
  324.     let b = ai.bar;
  325.     if (typeof label !== 'string') {
  326.       $remove(b);
  327.       ai.bar = null;
  328.       return;
  329.     }
  330.     if (!b) b = ai.bar = $create('div', {id: `${PREFIX}bar`});
  331.     App.updateStyles();
  332.     Bar.updateTitle();
  333.     Bar.show();
  334.     b.innerHTML = label;
  335.     if (!b.parentNode) {
  336.       doc.body.appendChild(b);
  337.       Util.forceLayout(b);
  338.     }
  339.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  340.   },
  341.  
  342.   show() {
  343.     clearTimeout(ai.timerBar);
  344.     ai.bar.style.removeProperty('opacity');
  345.     ai.timerBar = setTimeout(() => ai.bar && $css(ai.bar, {opacity: 0}), 3000);
  346.   },
  347.  
  348.   updateFileInfo() {
  349.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  350.     if (gi) {
  351.       const item = gi[i];
  352.       const noDesc = !gi.some(_ => _.desc);
  353.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  354.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  355.         item.desc,
  356.       ].filter(Boolean).join(' - ')}`;
  357.       Bar.set(c.trim() || ' ', 'gallery', true);
  358.     } else if ('caption' in ai) {
  359.       Bar.set(ai.caption, 'caption');
  360.     } else if (ai.tooltip) {
  361.       Bar.set(ai.tooltip.text, 'tooltip');
  362.     } else {
  363.       Bar.set(' ', 'info');
  364.     }
  365.   },
  366.  
  367.   updateTitle() {
  368.     if (!ai.bar) return;
  369.     const zoom = ai.nwidth && `${
  370.       Math.round(ai.scale * 100)
  371.     }%, ${
  372.       ai.nwidth
  373.     } x ${
  374.       ai.nheight
  375.     } px, ${
  376.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  377.     } MP`.replace(/\x20/g, '\xA0');
  378.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  379.       if (zoom) ai.bar.dataset.zoom = zoom;
  380.       else delete ai.bar.dataset.zoom;
  381.       Bar.show();
  382.     }
  383.   },
  384. };
  385.  
  386. const Calc = {
  387.  
  388.   frameSize(elFrame, parentWindow) {
  389.     if (!elFrame) return;
  390.     const r = elFrame.getBoundingClientRect();
  391.     const w = clamp(r.width, 0, parentWindow.innerWidth - r.left);
  392.     const h = clamp(r.height, 0, parentWindow.innerHeight - r.top);
  393.     return [w, h];
  394.   },
  395.  
  396.   generateScales(fit) {
  397.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  398.     const arr = [scale];
  399.     if (fit !== 1) {
  400.       const diff = goal / scale;
  401.       const steps = Math.log(diff) / Math.log(ZOOM_STEP) | 0;
  402.       const step = steps && Math.pow(diff, 1 / steps);
  403.       for (let i = steps; --i > 0;)
  404.         arr.push((scale *= step));
  405.       arr.push(scale = goal);
  406.     }
  407.     while ((scale *= ZOOM_STEP) <= ZOOM_MAX)
  408.       arr.push(scale);
  409.     return arr;
  410.   },
  411.  
  412.   naturalSize() {
  413.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  414.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  415.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  416.     if (p.clientWidth > nw) {
  417.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  418.       nh = ai.nheight = w / nw * nh | 0;
  419.       nw = ai.nwidth = w;
  420.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  421.     }
  422.   },
  423.  
  424.   rect() {
  425.     let {node, rule} = ai;
  426.     let n = rule.rect && node.closest(rule.rect);
  427.     if (n) return n.getBoundingClientRect();
  428.     const nested = node.getElementsByTagName('*');
  429.     let maxArea = 0;
  430.     let maxBounds;
  431.     n = node;
  432.     for (let i = 0; n; n = nested[i++]) {
  433.       const bounds = n.getBoundingClientRect();
  434.       const area = bounds.width * bounds.height;
  435.       if (area > maxArea) {
  436.         maxArea = area;
  437.         maxBounds = bounds;
  438.         node = n;
  439.       }
  440.     }
  441.     return maxBounds;
  442.   },
  443.  
  444.   placement() {
  445.     if (!ai.popup) return;
  446.     let x, y;
  447.     const {cx, cy, extras, view} = ai;
  448.     const vw = view.w - extras.outw;
  449.     const vh = view.h - extras.outh;
  450.     const w = ai.scale * ai.nwidth + extras.inw;
  451.     const h = ai.scale * ai.nheight + extras.inh;
  452.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  453.       const r = ai.rect;
  454.       const rx = (r.left + r.right) / 2;
  455.       const ry = (r.top + r.bottom) / 2;
  456.       if (vw - r.right - 40 > w || w < r.left - 40) {
  457.         if (h < vh - 60)
  458.           y = clamp(ry - h / 2, 30, vh - h - 30);
  459.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  460.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  461.         if (w < vw - 60)
  462.           x = clamp(rx - w / 2, 30, vw - w - 30);
  463.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  464.       }
  465.     }
  466.     if (x == null)
  467.       x = (vw - w) * (vw > w ? .5 : clamp(5 / 3 * (cx / vw - .2), 0, 1));
  468.     if (y == null)
  469.       y = (vh - h) * (vh > h ? .5 : clamp(5 / 3 * (cy / vh - .2), 0, 1));
  470.     return {
  471.       x: Math.round(x + extras.o),
  472.       y: Math.round(y + extras.o),
  473.       w: Math.round(w),
  474.       h: Math.round(h),
  475.     };
  476.   },
  477.  
  478.   scaleBiggerThan(scale, i, arr) {
  479.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  480.   },
  481.  
  482.   scaleIndex(dir) {
  483.     const i = ai.scales.indexOf(ai.scale);
  484.     if (i >= 0) return i + dir;
  485.     for (
  486.       let len = ai.scales.length,
  487.         i = dir > 0 ? 0 : len - 1;
  488.       i >= 0 && i < len;
  489.       i += dir
  490.     ) {
  491.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  492.         return i;
  493.     }
  494.     return -1;
  495.   },
  496.  
  497.   scaleForFirstZoom(keepScale) {
  498.     const z = ai.scaleZoom;
  499.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  500.   },
  501.  
  502.   scaleGain(url, parent) {
  503.     const imgs = $$('img, video', parent);
  504.     for (let i = imgs.length, img; (img = imgs[--i]);) {
  505.       if ((img.currentSrc || img.src) !== url || img.sizes)
  506.         continue;
  507.       const scaleX = (img.naturalWidth || img.videoWidth) / img.offsetWidth;
  508.       const scaleY = (img.naturalHeight || img.videoHeight) / img.offsetHeight;
  509.       const s = Math.max(scaleX, scaleY);
  510.       if (isFinite(s))
  511.         return s;
  512.     }
  513.   },
  514.  
  515.   updateExtras() {
  516.     const s = getComputedStyle(ai.popup);
  517.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  518.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  519.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  520.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  521.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  522.     ai.extras = {
  523.       inw, inh,
  524.       outw, outh,
  525.       o: o2 / 2,
  526.       w: inw + outw,
  527.       h: inh + outh,
  528.     };
  529.   },
  530.  
  531.   updateScales() {
  532.     const fit = Math.min(
  533.       (ai.view.w - ai.extras.w) / ai.nwidth,
  534.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  535.     const isCustom = !cfg.fit && cfg.scales.length;
  536.     let cutoff = Math.min(1, fit);
  537.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  538.     if (isCustom) {
  539.       const dst = [];
  540.       for (const scale of cfg.scales) {
  541.         const val = parseFloat(scale) || fit;
  542.         dst.push(val);
  543.         if (isCustom && typeof scale === 'string') {
  544.           if (scale.includes('!')) cutoff = val;
  545.           if (scale.includes('*')) scaleZoom = val;
  546.         }
  547.       }
  548.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  549.     } else {
  550.       ai.scales = Calc.generateScales(fit);
  551.     }
  552.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  553.     ai.scaleFit = fit;
  554.     ai.scaleZoom = scaleZoom;
  555.   },
  556.  
  557.   updateViewSize() {
  558.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  559.     ai.view = {
  560.       w: view.clientWidth,
  561.       h: view.clientHeight,
  562.     };
  563.     if (window === top) return;
  564.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  565.     if (w && h) {
  566.       ai.view = {w, h};
  567.     } else {
  568.       window.addEventListener('message', App.onMessageChild);
  569.       parent.postMessage(MSG.getViewSize, '*');
  570.     }
  571.   },
  572. };
  573.  
  574. class Config {
  575.  
  576.   constructor({data: c = GM_getValue('cfg'), save}) {
  577.     if (typeof c === 'string')
  578.       c = tryCatch(JSON.parse, c);
  579.     if (typeof c !== 'object' || !c)
  580.       c = {};
  581.     const {DEFAULTS} = Config;
  582.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  583.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  584.         '';
  585.     if (c.version !== DEFAULTS.version) {
  586.       if (typeof c.hosts === 'string')
  587.         c.hosts = c.hosts.split('\n')
  588.           .map(s => tryCatch(JSON.parse, s) || s)
  589.           .filter(Boolean);
  590.       if (c.close === true || c.close === false)
  591.         c.zoomOut = c.close ? 'auto' : 'stay';
  592.       for (const key in DEFAULTS)
  593.         if (typeof c[key] !== typeof DEFAULTS[key])
  594.           c[key] = DEFAULTS[key];
  595.       if (c.version === 3 && c.scales[0] === 0)
  596.         c.scales[0] = '0!';
  597.       for (const key in c)
  598.         if (!(key in DEFAULTS))
  599.           delete c[key];
  600.       c.version = DEFAULTS.version;
  601.       if (save)
  602.         GM_setValue('cfg', c);
  603.     }
  604.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  605.       App.globalStyle = '';
  606.     if (!Array.isArray(c.scales))
  607.       c.scales = [];
  608.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  609.     Object.assign(this, DEFAULTS, c);
  610.   }
  611. }
  612.  
  613. /** @type mpiv.Config */
  614. Config.DEFAULTS = Object.assign(Object.create(null), {
  615.   center: false,
  616.   css: '',
  617.   delay: 500,
  618.   fit: '',
  619.   globalStatus: false,
  620.   // prefer ' inside rules because " will be displayed as \"
  621.   // example: "img[src*='icon']"
  622.   hosts: [{
  623.     name: 'No popup for YouTube thumbnails',
  624.     d: 'www.youtube.com',
  625.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  626.     s: '',
  627.   }, {
  628.     name: 'No popup for SVG/PNG icons',
  629.     d: '',
  630.     e: "img[src*='icon']",
  631.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  632.     s: '',
  633.   }],
  634.   imgtab: false,
  635.   preload: false,
  636.   scale: 1.25,
  637.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  638.   start: 'auto',
  639.   uiBackgroundColor: '#ffffff',
  640.   uiBackgroundOpacity: 100,
  641.   uiBorderColor: '#000000',
  642.   uiBorderOpacity: 100,
  643.   uiBorder: 0,
  644.   uiShadowColor: '#000000',
  645.   uiShadowOpacity: 80,
  646.   uiShadow: 20,
  647.   uiPadding: 0,
  648.   uiMargin: 0,
  649.   version: 6,
  650.   xhr: true,
  651.   zoom: 'context',
  652.   zoomOut: 'auto',
  653. });
  654.  
  655. const Events = {
  656.  
  657.   hoverData: [],
  658.   hoverTimer: 0,
  659.  
  660.   onMouseOver(e) {
  661.     if (!App.enabled || e.shiftKey || ai.zoomed)
  662.       return;
  663.     let node = e.target;
  664.     if (node === ai.popup ||
  665.         node === doc.body ||
  666.         node === doc.documentElement ||
  667.         node === elConfig ||
  668.         ai.gallery && ai.rectHovered)
  669.       return;
  670.     if (node.shadowRoot)
  671.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  672.     // we don't want to process everything in the path of a quickly moving mouse cursor
  673.     Events.hoverData = [now(), e, node];
  674.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  675.   },
  676.  
  677.   onMouseOverThrottled() {
  678.     const [start, e, node] = Events.hoverData;
  679.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  680.     const wait = start + SETTLE_TIME - now();
  681.     Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  682.     if (Events.hoverTimer)
  683.       return;
  684.     if (!node.matches(':hover'))
  685.       return;
  686.     if (!Ruler.rules)
  687.       Ruler.init();
  688.     let a;
  689.     const tag = node.tagName;
  690.     const src = node.currentSrc || node.src;
  691.     const isPic = tag === 'IMG' || tag === 'VIDEO' && /\.(webm|mp4)(\?|$)/.test(src);
  692.     const info =
  693.       // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  694.       tag !== 'A' &&
  695.         RuleMatcher.find(isPic && !src.startsWith('data:') && Util.rel2abs(src), node) ||
  696.       (a = node.closest('A')) &&
  697.         RuleMatcher.findForLink(a) ||
  698.       isPic &&
  699.         {node, rule: {}, url: src};
  700.     if (info && info.url && info.node !== ai.node)
  701.       App.activate(info, e);
  702.   },
  703.  
  704.   onMouseOut(e) {
  705.     if (!e.relatedTarget && !e.shiftKey)
  706.       App.deactivate();
  707.   },
  708.  
  709.   onMouseOutShadow(e) {
  710.     const root = e.target.shadowRoot;
  711.     if (root) {
  712.       root.removeEventListener('mouseover', Events.onMouseOver);
  713.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  714.     }
  715.   },
  716.  
  717.   onMouseMove(e) {
  718.     Events.trackMouse(e);
  719.     if (e.shiftKey) {
  720.       ai.lazyUnload = true;
  721.     } else if (!ai.zoomed && !ai.rectHovered) {
  722.       App.deactivate();
  723.     } else if (ai.zoomed) {
  724.       Popup.move();
  725.       const {cx, cy, view: {w, h}} = ai;
  726.       const bx = w / 6;
  727.       const by = h / 6;
  728.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  729.       Status.set(`${onEdge ? '+' : '-'}edge`);
  730.     }
  731.   },
  732.  
  733.   onMouseDown({shiftKey, button}) {
  734.     if (button === 0 && shiftKey && ai.popup && ai.popup.controls) {
  735.       ai.controlled = ai.zoomed = true;
  736.     } else if (button === 2 || shiftKey) {
  737.       // we ignore RMB and Shift
  738.     } else {
  739.       App.deactivate({wait: true});
  740.       document.addEventListener('mouseup', App.enable, {once: true});
  741.     }
  742.   },
  743.  
  744.   onMouseScroll(e) {
  745.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  746.     if (ai.zoomed) {
  747.       Events.zoomInOut(dir);
  748.     } else if (ai.gNum > 1 && ai.popup) {
  749.       Gallery.next(-dir);
  750.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  751.       App.toggleZoom();
  752.     } else {
  753.       App.deactivate();
  754.       return;
  755.     }
  756.     dropEvent(e);
  757.   },
  758.  
  759.   onKeyDown(e) {
  760.     switch (e.key) {
  761.       case 'Shift':
  762.         Status.set('+shift');
  763.         if (ai.popup && 'controls' in ai.popup)
  764.           ai.popup.controls = true;
  765.         break;
  766.       case 'Control':
  767.         if (!ai.popup && (cfg.start !== 'auto' || ai.rule.manual))
  768.           App.start();
  769.         break;
  770.     }
  771.   },
  772.  
  773.   onKeyUp(e) {
  774.     switch (e.key.length > 1 ? e.key : e.code) {
  775.       case 'Shift':
  776.         Status.set('-shift');
  777.         if ((ai.popup || {}).controls)
  778.           ai.popup.controls = false;
  779.         if (ai.controlled) {
  780.           ai.controlled = false;
  781.           return;
  782.         }
  783.         if (ai.popup && (ai.zoomed || ai.rectHovered !== false))
  784.           App.toggleZoom();
  785.         else
  786.           App.deactivate({wait: true});
  787.         break;
  788.       case 'Control':
  789.         break;
  790.       case 'Escape':
  791.         App.deactivate({wait: true});
  792.         break;
  793.       case 'ArrowRight':
  794.       case 'KeyJ':
  795.         dropEvent(e);
  796.         Gallery.next(1);
  797.         break;
  798.       case 'ArrowLeft':
  799.       case 'KeyK':
  800.         dropEvent(e);
  801.         Gallery.next(-1);
  802.         break;
  803.       case 'KeyD': {
  804.         dropEvent(e);
  805.         Remoting.saveFile();
  806.         break;
  807.       }
  808.       case 'KeyT':
  809.         ai.lazyUnload = true;
  810.         GM_openInTab(Util.tabFixUrl() || ai.popup.src);
  811.         App.deactivate();
  812.         break;
  813.       default:
  814.         App.deactivate({wait: true});
  815.     }
  816.   },
  817.  
  818.   onContext(e) {
  819.     if (e.shiftKey) return;
  820.     if (cfg.zoom === 'context' && ai.popup && App.toggleZoom()) {
  821.       dropEvent(e);
  822.     } else if (!ai.popup && (cfg.start === 'context' || (cfg.start === 'auto' && ai.rule.manual))) {
  823.       App.start();
  824.       dropEvent(e);
  825.     } else {
  826.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  827.     }
  828.   },
  829.  
  830.   pierceShadow(node, x, y) {
  831.     for (let root; (root = node.shadowRoot);) {
  832.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  833.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  834.       const inner = root.elementFromPoint(x, y);
  835.       if (!inner || inner === node)
  836.         break;
  837.       node = inner;
  838.     }
  839.     return node;
  840.   },
  841.  
  842.   toggle(enable) {
  843.     const onOff = enable ? doc.addEventListener : doc.removeEventListener;
  844.     const passive = enable ? {passive: true} : undefined;
  845.     onOff.call(doc, 'mousemove', Events.onMouseMove, passive);
  846.     onOff.call(doc, 'mouseout', Events.onMouseOut, passive);
  847.     onOff.call(doc, 'mousedown', Events.onMouseDown, passive);
  848.     onOff.call(doc, 'contextmenu', Events.onContext);
  849.     onOff.call(doc, 'keydown', Events.onKeyDown);
  850.     onOff.call(doc, 'keyup', Events.onKeyUp);
  851.     onOff.call(doc, WHEEL_EVENT, Events.onMouseScroll, enable ? {passive: false} : undefined);
  852.   },
  853.  
  854.   trackMouse(e) {
  855.     const cx = ai.cx = e.clientX;
  856.     const cy = ai.cy = e.clientY;
  857.     const r = ai.rect || (ai.rect = Calc.rect());
  858.     ai.rectHovered =
  859.       cx > r.left - 2 && cx < r.right + 2 &&
  860.       cy > r.top - 2 && cy < r.bottom + 2;
  861.   },
  862.  
  863.   zoomInOut(dir) {
  864.     const i = Calc.scaleIndex(dir);
  865.     const n = ai.scales.length;
  866.     if (i >= 0 && i < n)
  867.       ai.scale = ai.scales[i];
  868.     const zo = cfg.zoomOut;
  869.     if (i <= 0 && zo !== 'stay') {
  870.       if (ai.scaleFit < ai.scale * .99) {
  871.         ai.scales.unshift(ai.scale = ai.scaleFit);
  872.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  873.         App.deactivate({wait: true});
  874.         return;
  875.       }
  876.       ai.zoomed = false;
  877.       Bar.updateFileInfo();
  878.     } else {
  879.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  880.     }
  881.     if (ai.zooming)
  882.       ai.popup.classList.add(`${PREFIX}zooming`);
  883.     Popup.move();
  884.     Bar.updateTitle();
  885.   },
  886. };
  887.  
  888. const Gallery = {
  889.  
  890.   makeParser(g) {
  891.     return (
  892.       typeof g === 'function' ? g :
  893.         typeof g === 'string' ? Util.newFunction('text', 'doc', 'url', 'm', 'rule', 'cb', g) :
  894.           Gallery.defaultParser
  895.     );
  896.   },
  897.  
  898.   findIndex(gUrl) {
  899.     const sel = gUrl.split('#')[1];
  900.     if (!sel)
  901.       return 0;
  902.     if (/^\d+$/.test(sel))
  903.       return parseInt(sel);
  904.     for (let i = ai.gNum; i--;) {
  905.       let {url} = ai.gItems[i];
  906.       if (Array.isArray(url))
  907.         url = url[0];
  908.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  909.         return i;
  910.     }
  911.     return 0;
  912.   },
  913.  
  914.   next(dir) {
  915.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  916.     const item = ai.gItems[ai.gIndex];
  917.     if (Array.isArray(item.url)) {
  918.       ai.urls = item.url.slice(1);
  919.       ai.url = item.url[0];
  920.     } else {
  921.       ai.urls = null;
  922.       ai.url = item.url;
  923.     }
  924.     Popup.destroy();
  925.     App.startSingle();
  926.     Bar.updateFileInfo();
  927.     Gallery.preload(dir);
  928.   },
  929.  
  930.   nextIndex(dir) {
  931.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  932.   },
  933.  
  934.   preload(dir) {
  935.     if (!ai.popup || !dir) return;
  936.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir)].url)[0];
  937.     ai.popup.addEventListener('load', Gallery.preloadOnLoad, {once: true});
  938.   },
  939.  
  940.   preloadOnLoad() {
  941.     $create('img', {src: ai.preloadUrl});
  942.   },
  943.  
  944.   defaultParser(text, doc, docUrl, m, rule) {
  945.     const {g} = rule;
  946.     const qEntry = g.entry;
  947.     const qCaption = ensureArray(g.caption);
  948.     const qImage = g.image;
  949.     const qTitle = g.title;
  950.     const fix =
  951.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  952.       (s => s.trim());
  953.     const items = [...$$(qEntry || qImage, doc)]
  954.       .map(processEntry)
  955.       .filter(Boolean);
  956.     items.title = processTitle();
  957.     return items;
  958.  
  959.     function processEntry(entry) {
  960.       const item = {};
  961.       try {
  962.         const img = qEntry ? $(qImage, entry) : entry;
  963.         item.url = fix(Remoting.findImageUrl(img, docUrl), true);
  964.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  965.       } catch (e) {}
  966.       return item.url && item;
  967.     }
  968.  
  969.     function processCaption(selector) {
  970.       const el = $(selector, this) ||
  971.                  $orSelf(selector, this.previousElementSibling) ||
  972.                  $orSelf(selector, this.nextElementSibling);
  973.       return el && fix(el.textContent);
  974.     }
  975.  
  976.     function processTitle() {
  977.       const el = $(qTitle, doc);
  978.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  979.     }
  980.  
  981.     function $orSelf(selector, el) {
  982.       if (el && !el.matches(qEntry))
  983.         return el.matches(selector) ? el : $(selector, el);
  984.     }
  985.   },
  986. };
  987.  
  988. const Popup = {
  989.  
  990.   async create(src, pageUrl) {
  991.     Popup.destroy();
  992.     ai.imageUrl = src;
  993.     if (ai.xhr && src)
  994.       src = await Remoting.getImage(src, pageUrl).catch(App.handleError);
  995.     if (!src) return;
  996.     const isVideo = Util.isVideoUrl(src);
  997.     const p = ai.popup = isVideo ? PopupVideo.create() : $create('img');
  998.     p.id = `${PREFIX}popup`;
  999.     p.src = src;
  1000.     p.addEventListener('error', App.handleError);
  1001.     if (ai.zooming)
  1002.       p.addEventListener('transitionend', Popup.onZoom);
  1003.     doc.body.insertBefore(p, ai.bar || undefined);
  1004.     await 0;
  1005.     App.checkProgress({start: true});
  1006.     if (p.complete)
  1007.       Popup.onLoad.call(ai.popup);
  1008.     else if (!isVideo)
  1009.       p.addEventListener('load', Popup.onLoad, {once: true});
  1010.   },
  1011.  
  1012.   destroy() {
  1013.     const p = ai.popup;
  1014.     if (!p) return;
  1015.     p.removeEventListener('error', App.handleError);
  1016.     if (typeof p.pause === 'function')
  1017.       p.pause();
  1018.     if (!ai.lazyUnload) {
  1019.       if (p.src.startsWith('blob:'))
  1020.         URL.revokeObjectURL(p.src);
  1021.       p.src = '';
  1022.     }
  1023.     p.remove();
  1024.     ai.zoomed = ai.popup = ai.popupLoaded = null;
  1025.   },
  1026.  
  1027.   move() {
  1028.     const p = Calc.placement();
  1029.     $css(ai.popup, {
  1030.       transform: `translate(${p.x}px, ${p.y}px)`,
  1031.       width: `${p.w}px`,
  1032.       height: `${p.h}px`,
  1033.     });
  1034.   },
  1035.  
  1036.   onLoad() {
  1037.     this.setAttribute('loaded', '');
  1038.     ai.popupLoaded = true;
  1039.     if (!ai.bar)
  1040.       Bar.updateFileInfo();
  1041.   },
  1042.  
  1043.   onZoom() {
  1044.     this.classList.remove(`${PREFIX}zooming`);
  1045.   },
  1046. };
  1047.  
  1048. const PopupVideo = {
  1049.   create() {
  1050.     const p = $create('video');
  1051.     p.autoplay = true;
  1052.     p.loop = true;
  1053.     p.volume = 0.5;
  1054.     p.controls = false;
  1055.     p.addEventListener('progress', PopupVideo.progress);
  1056.     p.addEventListener('canplaythrough', PopupVideo.progressDone, {once: true});
  1057.     ai.bufBar = false;
  1058.     ai.bufStart = now();
  1059.     return p;
  1060.   },
  1061.  
  1062.   progress() {
  1063.     const {duration} = this;
  1064.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1065.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1066.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1067.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1068.     }
  1069.   },
  1070.  
  1071.   async progressDone() {
  1072.     this.removeEventListener('progress', PopupVideo.progress);
  1073.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1074.       Bar.set(false);
  1075.     Popup.onLoad.call(this);
  1076.     try {
  1077.       await this.play();
  1078.     } catch (e) {
  1079.     } finally {
  1080.       this.controls |= this.paused;
  1081.     }
  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.       dotDomain.endsWith('.deviantart.com') && {
  1146.         e: '.dev-view-deviation img',
  1147.         s: () => [
  1148.           $('.dev-page-download').href,
  1149.           $('.dev-content-full').src,
  1150.         ].filter(Boolean),
  1151.       },
  1152.       dotDomain.endsWith('.deviantart.com') && {
  1153.         u: ',strp/',
  1154.         s: '/\\/v1\\/.*//',
  1155.       },
  1156.       dotDomain.endsWith('.dropbox.com') && {
  1157.         r: /(.+?&size_mode)=\d+(.*)/,
  1158.         s: '$1=5$2',
  1159.       },
  1160.       dotDomain.endsWith('.facebook.com') && {
  1161.         e: 'a[href*="ref=hovercard"]',
  1162.         s: (m, node) =>
  1163.           'https://www.facebook.com/photo.php?fbid=' +
  1164.           /\/[0-9]+_([0-9]+)_/.exec($('img', node).src)[1],
  1165.         follow: true,
  1166.       },
  1167.       dotDomain.endsWith('.facebook.com') && {
  1168.         r: /(fbcdn|external).*?(app_full_proxy|safe_image).+?(src|url)=(http.+?)[&"']/,
  1169.         s: (m, node) =>
  1170.           node.parentNode.className.includes('video') && m[4].includes('fbcdn') ? '' :
  1171.             decodeURIComponent(m[4]),
  1172.         html: true,
  1173.         follow: true,
  1174.       },
  1175.       dotDomain.endsWith('.flickr.com') &&
  1176.       tryCatch(() => unsafeWindow.YUI_config.flickr.api.site_key) && {
  1177.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1178.         s: m => `https://www.flickr.com/services/rest/?${
  1179.           new URLSearchParams({
  1180.             photo_id: m[1],
  1181.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1182.             method: 'flickr.photos.getSizes',
  1183.             format: 'json',
  1184.             nojsoncallback: 1,
  1185.           }).toString()}`,
  1186.         q: text => JSON.parse(text).sizes.size.pop().source,
  1187.       },
  1188.       dotDomain.endsWith('.github.com') && {
  1189.         r: new RegExp([
  1190.           /(avatars.+?&s=)\d+/,
  1191.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1192.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1193.         ].map(rx => rx.source).join('|')),
  1194.         s: m => `https://${
  1195.           m[1] ? `${m[1]}460` :
  1196.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1197.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1198.         }`,
  1199.       },
  1200.       isGoogleImages && {
  1201.         e: 'a[href*="imgres?imgurl="] img',
  1202.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1203.         follow: true,
  1204.       },
  1205.       isGoogleImages && {
  1206.         e: '[data-tbnid] a:not([href])',
  1207.         s: (m, a) => {
  1208.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1209.           new MutationObserver((_, mo) => {
  1210.             mo.disconnect();
  1211.             App.enabled = true;
  1212.             a.alt = a2.innerText;
  1213.             const {left, top} = a.getBoundingClientRect();
  1214.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1215.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1216.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1217.         },
  1218.       },
  1219.       dotDomain.endsWith('.instagram.com') && {
  1220.         e: [
  1221.           'a[href*="/p/"]',
  1222.           'article [role="button"][tabindex="0"], article [role="button"][tabindex="0"] div',
  1223.         ],
  1224.         s: (m, node, rule) => {
  1225.           let data, a, n, img, src;
  1226.           if (location.pathname.startsWith('/p/')) {
  1227.             img = $('img[srcset], video', node.parentNode);
  1228.             if (img && (img.localName === 'video' || parseFloat(img.sizes) > 900))
  1229.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1230.           }
  1231.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1232.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1233.             data = a && tryCatch(this._getEdge, a.pathname.split('/')[2]);
  1234.           }
  1235.           rule.q = data && data.is_video && !data.video_url && 'meta[property="og:video"]';
  1236.           rule.g = a && $('[class*="Carousel"]', a) && rule._g;
  1237.           rule.follow = !data && !rule.g;
  1238.           rule._data = data;
  1239.           rule._img = img;
  1240.           return (
  1241.             !a && !src ? false :
  1242.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1' : ''}` :
  1243.                 data.video_url || data.display_url);
  1244.         },
  1245.         c: (html, doc, node, rule) =>
  1246.           tryCatch(rule._getCaption, rule._data) || (rule._img || 0).alt || '',
  1247.         anonymous: true,
  1248.         follow: true,
  1249.         _g(text, doc, url, m, rule) {
  1250.           const media = JSON.parse(text).graphql.shortcode_media;
  1251.           const items = media.edge_sidecar_to_children.edges.map(e => ({
  1252.             url: e.node.video_url || e.node.display_url,
  1253.           }));
  1254.           items.title = tryCatch(rule._getCaption, media) || '';
  1255.           return items;
  1256.         },
  1257.         _getCaption: data => data && data.edge_media_to_caption.edges[0].node.text,
  1258.         _getEdge: shortcode => unsafeWindow._sharedData.entry_data.ProfilePage[0].graphql.user
  1259.             .edge_owner_to_timeline_media.edges.find(e => e.node.shortcode === shortcode).node,
  1260.       },
  1261.       ...dotDomain.endsWith('.reddit.com') && [{
  1262.         u: '||i.reddituploads.com/',
  1263.       }, {
  1264.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1265.         s: (m, node) => $propUp(node, 'data-url'),
  1266.       }, {
  1267.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1268.         s: 'https://i$1',
  1269.       }] || [],
  1270.       dotDomain.endsWith('.tumblr.com') && {
  1271.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1272.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1273.         follow: true,
  1274.       },
  1275.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1276.         e: 'a.media-item, a.js-media-image-link',
  1277.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1278.         follow: true,
  1279.       },
  1280.       dotDomain.endsWith('.twitter.com') && {
  1281.         e: '.grid-tweet > .media-overlay',
  1282.         s: (m, node) => node.previousElementSibling.src,
  1283.         follow: true,
  1284.       },
  1285.     ];
  1286.  
  1287.     const main = [
  1288.       {
  1289.         r: /[/?=](https?[^&]+)/,
  1290.         s: '$1',
  1291.         follow: true,
  1292.       },
  1293.       {
  1294.         u: [
  1295.           '||500px.com/photo/',
  1296.           '||cl.ly/',
  1297.           '||cweb-pix.com/',
  1298.           '||ibb.co/',
  1299.           '||imgcredit.xyz/image/',
  1300.         ],
  1301.         r: /\.\w+\/.+/,
  1302.         q: 'meta[property="og:image"]',
  1303.       },
  1304.       {
  1305.         u: 'attachment.php',
  1306.         r: /attachment\.php.+attachmentid/,
  1307.       },
  1308.       {
  1309.         u: '||abload.de/image',
  1310.         q: '#image',
  1311.       },
  1312.       {
  1313.         u: '||deviantart.com/art/',
  1314.         s: (m, node) =>
  1315.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1316.             '' :
  1317.             m.input,
  1318.         q: [
  1319.           '#download-button[href*=".jpg"]',
  1320.           '#download-button[href*=".jpeg"]',
  1321.           '#download-button[href*=".gif"]',
  1322.           '#download-button[href*=".png"]',
  1323.           '#gmi-ResViewSizer_fullimg',
  1324.           'img.dev-content-full',
  1325.         ],
  1326.       },
  1327.       {
  1328.         u: '||dropbox.com/s',
  1329.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1330.         q: (text, doc) =>
  1331.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1332.       },
  1333.       {
  1334.         r: /[./]ebay\.[^/]+\/itm\//,
  1335.         q: text =>
  1336.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1337.             .replace(/~~60_\d+/, '~~60_57'),
  1338.       },
  1339.       {
  1340.         u: '||i.ebayimg.com/',
  1341.         s: (m, node) =>
  1342.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1343.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1344.       },
  1345.       {
  1346.         u: [
  1347.           '||fastpic.ru/big',
  1348.           '||fastpic.ru/thumb',
  1349.         ],
  1350.         r: /\/\/(?:i(\d+)\.)?([^/]+\/)(big|thumb|view)\/([^.]+?)\.(\w+)/,
  1351.         s: (m, node, rule) => {
  1352.           const a = node.closest('[href*="fastpic.ru"]');
  1353.           const am = a && rule.r.exec(decodeURIComponent(a.href)) || [];
  1354.           const p = a && am[4].split('/');
  1355.           return `https://i${am[1] || m[1] || am[3] === 'view' && p[0]}.${m[2]}big/${
  1356.             am[3] === 'big' ? am[4] : m[4]}.${am[5] || m[5]}?noht=1`;
  1357.         },
  1358.         xhr: () => 'https://fastpic.ru',
  1359.       },
  1360.       {
  1361.         u: '||fastpic.ru/view/',
  1362.         q: 'img[src*="/big/"]',
  1363.         xhr: true,
  1364.       },
  1365.       {
  1366.         u: '||facebook.com/',
  1367.         r: /photo\.php|[^/]+\/photos\//,
  1368.         s: (m, node) =>
  1369.           node.id === 'fbPhotoImage' ? false :
  1370.             /gradient\.png$/.test(m.input) ? '' :
  1371.               m.input.replace('www.facebook.com', 'mbasic.facebook.com'),
  1372.         q: [
  1373.           'div + span > a:first-child:not([href*="tag_faces"])',
  1374.           'div + span > a[href*="tag_faces"] ~ a',
  1375.         ],
  1376.         rect: '#fbProfileCover',
  1377.       },
  1378.       {
  1379.         u: '||fbcdn.',
  1380.         r: /fbcdn.+?[0-9]+_([0-9]+)_[0-9]+_[a-z]\.(jpg|png)/,
  1381.         s: m =>
  1382.           dotDomain.endsWith('.facebook.com') &&
  1383.           tryCatch(() => unsafeWindow.PhotoSnowlift.getInstance().stream.cache.image[m[1]].url) ||
  1384.           false,
  1385.         manual: true,
  1386.       },
  1387.       {
  1388.         u: ['||fbcdn-', 'fbcdn.net/'],
  1389.         r: /(https?:\/\/(fbcdn-[-\w.]+akamaihd|[-\w.]+?fbcdn)\.net\/[-\w/.]+?)_[a-z]\.(jpg|png)(\?[0-9a-zA-Z0-9=_&]+)?/,
  1390.         s: (m, node) => {
  1391.           if (node.id === 'fbPhotoImage') {
  1392.             const a = $('a.fbPhotosPhotoActionsItem[href$="dl=1"]', doc.body);
  1393.             if (a) return a.href.includes(m.input.match(/[0-9]+_[0-9]+_[0-9]+/)[0]) ? '' : a.href;
  1394.           }
  1395.           if (m[4])
  1396.             return false;
  1397.           const pn = node.parentNode;
  1398.           if (pn.outerHTML.includes('/hovercard/'))
  1399.             return '';
  1400.           if (node.outerHTML.includes('profile') && pn.parentNode.href.includes('/photo'))
  1401.             return false;
  1402.           return m[1].replace(/\/[spc][\d.x]+/g, '').replace('/v/', '/') + '_n.' + m[3];
  1403.         },
  1404.         rect: '.photoWrap',
  1405.       },
  1406.       {
  1407.         u: '||flickr.com/photos/',
  1408.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1409.         s: m =>
  1410.           m.input.indexOf('/sizes/') < 0 ?
  1411.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1412.             false,
  1413.         q: (text, doc) => {
  1414.           const links = $$('.sizes-list a', doc);
  1415.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1416.         },
  1417.         follow: true,
  1418.       },
  1419.       {
  1420.         u: '||flickr.com/photos/',
  1421.         r: /\/sizes\//,
  1422.         q: '#allsizes-photo > img',
  1423.       },
  1424.       {
  1425.         u: '||gfycat.com/',
  1426.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1427.         s: 'https://$1$3',
  1428.         q: [
  1429.           'meta[content$=".webm"]',
  1430.           '#webmsource',
  1431.           'source[src$=".webm"]',
  1432.         ],
  1433.       },
  1434.       {
  1435.         u: [
  1436.           '||googleusercontent.com/proxy',
  1437.           '||googleusercontent.com/gadgets/proxy',
  1438.         ],
  1439.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1440.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1441.       },
  1442.       {
  1443.         u: [
  1444.           '||googleusercontent.com/',
  1445.           '||ggpht.com/',
  1446.         ],
  1447.         s: (m, node) =>
  1448.           m.input.includes('webcache.') ||
  1449.           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/) ||
  1450.           node.matches('.g-hovercard *, a[href*="profile_redirector"] > img') ?
  1451.             '' :
  1452.             m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1453.               .replace(/=[-\w]+([&#].*|$)/, ''),
  1454.       },
  1455.       {
  1456.         u: '||gravatar.com/',
  1457.         r: /([a-z0-9]{32})/,
  1458.         s: 'https://gravatar.com/avatar/$1?s=200',
  1459.       },
  1460.       {
  1461.         u: '//gyazo.com/',
  1462.         r: /\.com\/\w{32,}/,
  1463.         q: 'meta[name="twitter:image"]',
  1464.         xhr: true,
  1465.       },
  1466.       {
  1467.         u: '||hostingkartinok.com/show-image.php',
  1468.         q: '.image img',
  1469.       },
  1470.       {
  1471.         u: [
  1472.           '||imagecurl.com/images/',
  1473.           '||imagecurl.com/viewer.php',
  1474.         ],
  1475.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1476.         s: 'https://imagecurl.com/images/$1$2$3',
  1477.       },
  1478.       {
  1479.         u: '||imagebam.com/image/',
  1480.         q: 'meta[property="og:image"]',
  1481.         tabfix: true,
  1482.         xhr: hostname.includes('planetsuzy'),
  1483.       },
  1484.       {
  1485.         u: '||imageban.ru/thumbs',
  1486.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1487.         s: '$1out$2/$3/$4',
  1488.       },
  1489.       {
  1490.         u: [
  1491.           '||imageban.ru/show',
  1492.           '||imageban.net/show',
  1493.           '||ibn.im/',
  1494.         ],
  1495.         q: '#img_main',
  1496.       },
  1497.       {
  1498.         u: '||imageshack.us/img',
  1499.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1500.         s: 'https://$2/download/$1/$3$4',
  1501.       },
  1502.       {
  1503.         u: '||imageshack.us/i/',
  1504.         q: '#share-dl',
  1505.       },
  1506.       {
  1507.         u: '||imageteam.org/img',
  1508.         q: 'img[alt="image"]',
  1509.       },
  1510.       {
  1511.         u: [
  1512.           '||imagetwist.com/',
  1513.           '||imageshimage.com/',
  1514.         ],
  1515.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1516.         q: 'img.pic',
  1517.         xhr: true,
  1518.       },
  1519.       {
  1520.         u: '||imageupper.com/i/',
  1521.         q: '#img',
  1522.         xhr: true,
  1523.       },
  1524.       {
  1525.         u: '||imagevenue.com/img.php',
  1526.         q: '#thepic',
  1527.       },
  1528.       {
  1529.         u: '||imagezilla.net/show/',
  1530.         q: '#photo',
  1531.         xhr: true,
  1532.       },
  1533.       {
  1534.         u: [
  1535.           '||images-na.ssl-images-amazon.com/images/',
  1536.           '||media-imdb.com/images/',
  1537.         ],
  1538.         r: /images\/.+?\.jpg/,
  1539.         s: '/V1\\.?_.+?\\.//g',
  1540.       },
  1541.       {
  1542.         u: '||imgbox.com/',
  1543.         r: /\.com\/([a-z0-9]+)$/i,
  1544.         q: '#img',
  1545.         xhr: hostname !== 'imgbox.com',
  1546.       },
  1547.       {
  1548.         u: '||imgclick.net/',
  1549.         r: /\.net\/(\w+)/,
  1550.         q: 'img.pic',
  1551.         xhr: true,
  1552.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1553.       },
  1554.       {
  1555.         u: [
  1556.           '||imgflip.com/i/',
  1557.           '||imgflip.com/gif/',
  1558.         ],
  1559.         r: /\/(i|gif)\/([^/?#]+)/,
  1560.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1561.       },
  1562.       {
  1563.         u: [
  1564.           '||imgur.com/a/',
  1565.           '||imgur.com/gallery/',
  1566.           '||imgur.com/t/',
  1567.         ],
  1568.         g: async (text, doc, url, m, rule, cb) => {
  1569.           // simplified extraction of JSON as it occupies only one line
  1570.           if (!/(?:mergeConfig\('gallery',\s*|Imgur\.Album\.getInstance\()[\s\S]*?[,\s{"'](?:image|album)\s*:\s*({[^\r\n]+?}),?[\r\n]/.test(text))
  1571.             return;
  1572.           const info = JSON.parse(RegExp.$1);
  1573.           let images = info.is_album ? info.album_images.images : [info];
  1574.           if (info.num_images > images.length) {
  1575.             const url = `https://imgur.com/ajaxalbums/getimages/${info.hash}/hit.json?all=true`;
  1576.             images = JSON.parse((await Remoting.gmXhr(url)).responseText).data.images;
  1577.           }
  1578.           const items = [];
  1579.           for (const img of images || []) {
  1580.             const u = `https://i.imgur.com/${img.hash}`;
  1581.             items.push({
  1582.               url: img.ext === '.gif' && img.animated !== false ?
  1583.                 [`${u}.webm`, `${u}.mp4`, u] :
  1584.                 u + img.ext,
  1585.               desc: [img.title, img.description].filter(Boolean).join(' - '),
  1586.             });
  1587.           }
  1588.           if (images && info.is_album && !`${items[0].desc || ''}`.includes(info.title))
  1589.             items.title = info.title;
  1590.           cb(items);
  1591.         },
  1592.         css: '.post > .hover { display:none!important; }',
  1593.       },
  1594.       {
  1595.         u: '||imgur.com/',
  1596.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1597.         s: 'gallery',
  1598.         g: (text, doc, url, m) =>
  1599.           m[2].split(',').map(id => ({
  1600.             url: `https://i.${m[1]}${id}.jpg`,
  1601.           })),
  1602.       },
  1603.       {
  1604.         u: '||imgur.com/',
  1605.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.([a-z]+))/i,
  1606.         s: (m, node) => {
  1607.           if (/memegen|random|register|search|signin/.test(m.input))
  1608.             return '';
  1609.           const a = node.closest('a');
  1610.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1611.             return false;
  1612.           const id = m[3].replace(/(.{7})[bhm]$/, '$1');
  1613.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1614.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1615.           return ext === 'webm' ?
  1616.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1617.             u + ext;
  1618.         },
  1619.       },
  1620.       {
  1621.         u: [
  1622.           '||instagr.am/p/',
  1623.           '||instagram.com/p/',
  1624.         ],
  1625.         s: m => m.input.substr(0, m.input.lastIndexOf('/')) + '/?__a=1',
  1626.         q: text => {
  1627.           const m = JSON.parse(text).graphql.shortcode_media;
  1628.           return m.video_url || m.display_url;
  1629.         },
  1630.         rect: 'div.PhotoGridMediaItem',
  1631.         c: text => {
  1632.           const m = JSON.parse(text).graphql.shortcode_media.edge_media_to_caption.edges[0];
  1633.           return m === undefined ? '(no caption)' : m.node.text;
  1634.         },
  1635.       },
  1636.       {
  1637.         u: [
  1638.           '||livememe.com/',
  1639.           '||lvme.me/',
  1640.         ],
  1641.         r: /\.\w+\/([^.]+)$/,
  1642.         s: 'http://i.lvme.me/$1.jpg',
  1643.       },
  1644.       {
  1645.         u: '||lostpic.net/image',
  1646.         q: '.image-viewer-image img',
  1647.       },
  1648.       {
  1649.         u: '||makeameme.org/meme/',
  1650.         r: /\/meme\/([^/?#]+)/,
  1651.         s: 'https://media.makeameme.org/created/$1.jpg',
  1652.       },
  1653.       {
  1654.         u: '||photobucket.com/',
  1655.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  1656.         s: 'https://i$1$3',
  1657.         xhr: !dotDomain.endsWith('.photobucket.com'),
  1658.       },
  1659.       {
  1660.         u: '||piccy.info/view3/',
  1661.         r: /(.+?\/view3)\/(.*)\//,
  1662.         s: '$1/$2/orig/',
  1663.         q: '#mainim',
  1664.       },
  1665.       {
  1666.         u: '||pimpandhost.com/image/',
  1667.         r: /(.+?\/image\/[0-9]+)/,
  1668.         s: '$1?size=original',
  1669.         q: 'img.original',
  1670.       },
  1671.       {
  1672.         u: [
  1673.           '||pixroute.com/',
  1674.           '||imgspice.com/',
  1675.         ],
  1676.         r: /\.html$/,
  1677.         q: 'img[id]',
  1678.         xhr: true,
  1679.       },
  1680.       {
  1681.         u: '||postima',
  1682.         r: /postima?ge?\.org\/image\/\w+/,
  1683.         q: [
  1684.           'a[href*="dl="]',
  1685.           '#main-image',
  1686.         ],
  1687.       },
  1688.       {
  1689.         u: [
  1690.           '||prntscr.com/',
  1691.           '||prnt.sc/',
  1692.         ],
  1693.         r: /\.\w+\/.+/,
  1694.         q: 'meta[property="og:image"]',
  1695.         xhr: true,
  1696.       },
  1697.       {
  1698.         u: '||radikal.ru/',
  1699.         r: /\.ru\/(fp|.+\.html)/,
  1700.         q: text => text.match(/http:\/\/[a-z0-9]+\.radikal\.ru[a-z0-9/]+\.(jpg|gif|png)/i)[0],
  1701.       },
  1702.       {
  1703.         u: '||tumblr.com',
  1704.         r: /_500\.jpg/,
  1705.         s: ['/_500/_1280/', ''],
  1706.       },
  1707.       {
  1708.         u: '||twimg.com/',
  1709.         r: /\/profile_images/i,
  1710.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  1711.       },
  1712.       {
  1713.         u: '||twimg.com/media/',
  1714.         r: /.+?format=(jpe?g|png|gif)/i,
  1715.         s: '$0&name=large',
  1716.       },
  1717.       {
  1718.         u: '||twimg.com/1/proxy',
  1719.         r: /t=([^&_]+)/i,
  1720.         s: m => atob(m[1]).match(/http.+/),
  1721.       },
  1722.       {
  1723.         u: '||pic.twitter.com/',
  1724.         r: /\.com\/[a-z0-9]+/i,
  1725.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  1726.         follow: true,
  1727.       },
  1728.       {
  1729.         u: '||twitpic.com/',
  1730.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  1731.         s: 'https://twitpic.com/show/large/$2',
  1732.       },
  1733.       {
  1734.         u: '||upix.me/files',
  1735.         s: '/#//',
  1736.       },
  1737.       {
  1738.         u: '||wiki',
  1739.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  1740.         s: '/\\/thumb(?=\\/)|' +
  1741.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  1742.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  1743.         xhr: !hostname.includes('wiki'),
  1744.       },
  1745.       {
  1746.         u: '||ytimg.com/vi/',
  1747.         r: /(.+?\/vi\/[^/]+)/,
  1748.         s: '$1/0.jpg',
  1749.         rect: '.video-list-item',
  1750.       },
  1751.       {
  1752.         u: '/viewer.php?file=',
  1753.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  1754.         s: '$1/images/$2',
  1755.         xhr: true,
  1756.       },
  1757.       {
  1758.         u: '/thumb_',
  1759.         r: /\/albums.+\/thumb_[^/]/,
  1760.         s: '/thumb_//',
  1761.       },
  1762.       {
  1763.         u: [
  1764.           '.th.jp',
  1765.           '.th.gif',
  1766.           '.th.png',
  1767.         ],
  1768.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  1769.         s: '$1$2',
  1770.         follow: true,
  1771.       },
  1772.       {
  1773.         r: /^[^?]+?\.(bmp|jpe?g?|gif|mp4|png|svg|web[mp])($|\?)/i,
  1774.       },
  1775.     ];
  1776.  
  1777.     /** @type mpiv.HostRule[] */
  1778.     Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean);
  1779.   },
  1780.  
  1781.   format(rule, {expand} = {}) {
  1782.     const s = JSON.stringify(rule, null, ' ');
  1783.     return expand ?
  1784.       /* {"a": ...,
  1785.           "b": ...,
  1786.           "c": ...
  1787.          } */
  1788.       s.replace(/^{\s+/g, '{') :
  1789.       /* {"a": ..., "b": ..., "c": ...} */
  1790.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  1791.   },
  1792.  
  1793.   /** @returns mpiv.HostRule | Error | false | undefined */
  1794.   parse(rule) {
  1795.     const isBatchOp = this instanceof Map;
  1796.     try {
  1797.       if (typeof rule === 'string')
  1798.         rule = JSON.parse(rule);
  1799.       if ('d' in rule && typeof rule.d !== 'string')
  1800.         rule.d = undefined;
  1801.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  1802.         return false;
  1803.       const compileTo = isBatchOp ? rule : {};
  1804.       if (rule.r)
  1805.         compileTo.r = new RegExp(rule.r, 'i');
  1806.       if (RX_HAS_CODE.test(rule.s))
  1807.         compileTo.s = Util.newFunction('m', 'node', 'rule', rule.s);
  1808.       if (RX_HAS_CODE.test(rule.q))
  1809.         compileTo.q = Util.newFunction('text', 'doc', 'node', 'rule', rule.q);
  1810.       if (RX_HAS_CODE.test(rule.c))
  1811.         compileTo.c = Util.newFunction('text', 'doc', 'node', 'rule', rule.c);
  1812.       return rule;
  1813.     } catch (e) {
  1814.       if (!e.message.includes('unsafe-eval'))
  1815.         if (isBatchOp) {
  1816.           this.set(rule, e);
  1817.         } else {
  1818.           return e;
  1819.         }
  1820.     }
  1821.   },
  1822.  
  1823.   runC(text, doc = document) {
  1824.     switch (typeof ai.rule.c) {
  1825.       case 'function':
  1826.         // not specifying as a parameter's default value to get the html only when needed
  1827.         if (!text) text = doc.documentElement.outerHTML;
  1828.         ai.caption = ai.rule.c(text, doc, ai.node, ai.rule);
  1829.         break;
  1830.       case 'string': {
  1831.         const el = $many(ai.rule.c, doc);
  1832.         ai.caption = !el ? '' :
  1833.           el.getAttribute('content') ||
  1834.           el.getAttribute('title') ||
  1835.           el.textContent;
  1836.         break;
  1837.       }
  1838.       default:
  1839.         ai.caption = (ai.tooltip || 0).text || ai.node.alt || $propUp(ai.node, 'title') ||
  1840.                      Remoting.getFileName(ai.node.src || $propUp(ai.node, 'href'));
  1841.     }
  1842.   },
  1843.  
  1844.   runQ(text, doc, docUrl) {
  1845.     let url;
  1846.     if (typeof ai.rule.q === 'function') {
  1847.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  1848.       if (Array.isArray(url)) {
  1849.         ai.urls = url.slice(1);
  1850.         url = url[0];
  1851.       }
  1852.     } else {
  1853.       const el = $many(ai.rule.q, doc);
  1854.       url = el && Remoting.findImageUrl(el, docUrl);
  1855.     }
  1856.     return url;
  1857.   },
  1858.  
  1859.   runS(node, rule, m) {
  1860.     let urls = [];
  1861.     for (const s of ensureArray(rule.s))
  1862.       urls.push(
  1863.         typeof s === 'string' ? Util.maybeDecodeUrl(Ruler.substituteSingle(s, m)) :
  1864.           typeof s === 'function' ? s(m, node, rule) :
  1865.             s);
  1866.     if (rule.q && urls.length > 1) {
  1867.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  1868.       return {skipRule: true};
  1869.     }
  1870.     if (Array.isArray(urls[0]))
  1871.       urls = urls[0];
  1872.     // `false` returned by "s" property means "skip this rule"
  1873.     // any other falsy value (like say "") means "stop all rules"
  1874.     return urls[0] === false ? {skipRule: true} : urls.map(Util.maybeDecodeUrl);
  1875.   },
  1876.  
  1877.   substituteSingle(s, m) {
  1878.     if (!m) return s;
  1879.     if (s.startsWith('/') && !s.startsWith('//')) {
  1880.       const mid = s.search(/[^\\]\//) + 1;
  1881.       const end = s.lastIndexOf('/');
  1882.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  1883.       return m.input.replace(re, s.slice(mid + 1, end));
  1884.     }
  1885.     if (m.length && s.includes('$')) {
  1886.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  1887.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  1888.         for (let i = maxLength; i >= 0; i--) {
  1889.           const part = num.slice(0, i) | 0;
  1890.           if (part < m.length)
  1891.             return (m[part] || '') + num.slice(i);
  1892.         }
  1893.         return text;
  1894.       });
  1895.     }
  1896.     return s;
  1897.   },
  1898. };
  1899.  
  1900. const RuleMatcher = {
  1901.  
  1902.   /** @returns ?mpiv.RuleMatchInfo */
  1903.   findForLink(a) {
  1904.     let url =
  1905.       a.getAttribute('data-expanded-url') ||
  1906.       a.getAttribute('data-full-url') ||
  1907.       a.getAttribute('data-url') ||
  1908.       a.href;
  1909.     if (url.startsWith('data:'))
  1910.       url = false;
  1911.     else if (url.includes('//t.co/'))
  1912.       url = 'http://' + a.textContent;
  1913.     return RuleMatcher.find(url, a);
  1914.   },
  1915.  
  1916.   /** @returns ?mpiv.RuleMatchInfo */
  1917.   find(url, node, {noHtml, skipRules} = {}) {
  1918.     const tn = node.tagName;
  1919.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  1920.     const isPicOrLink = isPic || tn === 'A';
  1921.     let m, html, urls;
  1922.     for (const rule of Ruler.rules) {
  1923.       const {e} = rule;
  1924.       if (e && !node.matches(e) || skipRules && skipRules.includes(rule))
  1925.         continue;
  1926.       const {r, u} = rule;
  1927.       if (r && !noHtml && rule.html && (isPicOrLink || e))
  1928.         m = r.exec(html || (html = node.outerHTML));
  1929.       else if (r || u)
  1930.         m = url && RuleMatcher.makeUrlMatch(url, node, rule, r, u);
  1931.       else
  1932.         m = url ? RuleMatcher.makeDummyMatch(url) : [];
  1933.       if (!m)
  1934.         continue;
  1935.       const {s} = rule;
  1936.       let hasS = s !== undefined;
  1937.       // a rule with follow:true for the currently hovered IMG produced a URL,
  1938.       // but we'll only allow it to match rules without 's' in the nested find call
  1939.       if (isPic && !hasS && !skipRules)
  1940.         continue;
  1941.       if (s === '')
  1942.         return {};
  1943.       hasS &= s !== 'gallery';
  1944.       urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  1945.       if (!urls.skipRule) {
  1946.         const url = urls[0];
  1947.         return !url ? {} :
  1948.           hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule) &&
  1949.             RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]}) ||
  1950.             RuleMatcher.makeInfo(urls, node, rule, m);
  1951.       }
  1952.     }
  1953.   },
  1954.  
  1955.   makeUrlMatch(url, node, rule, r, u) {
  1956.     let m;
  1957.     if (u) {
  1958.       u = rule._u || (rule._u = UrlMatcher(u));
  1959.       m = u.fn.call(u.this, url) && (r || RuleMatcher.makeDummyMatch(url));
  1960.     }
  1961.     return (m || !u) && r ? r.exec(url) : m;
  1962.   },
  1963.  
  1964.   makeDummyMatch(url) {
  1965.     const m = [url];
  1966.     m.index = 0;
  1967.     m.input = url;
  1968.     return m;
  1969.   },
  1970.  
  1971.   /** @returns mpiv.RuleMatchInfo */
  1972.   makeInfo(urls, node, rule, m) {
  1973.     const url = urls[0];
  1974.     const xhr = cfg.xhr && rule.xhr;
  1975.     const info = {
  1976.       node,
  1977.       rule,
  1978.       url,
  1979.       urls: urls.length > 1 ? urls.slice(1) : null,
  1980.       match: m,
  1981.       gallery: rule.g && Gallery.makeParser(rule.g),
  1982.       post: typeof rule.post === 'function' ? rule.post(m) : rule.post,
  1983.       xhr: xhr != null ? xhr : isSecureContext && !`${url}`.startsWith(location.protocol),
  1984.     };
  1985.     if (
  1986.       dotDomain.endsWith('.twitter.com') && !/(facebook|google|twimg|twitter)\.com\//.test(url) ||
  1987.       dotDomain.endsWith('.github.com') && !/github/.test(url) ||
  1988.       dotDomain.endsWith('.facebook.com') && /\bimgur\.com/.test(url)
  1989.     ) {
  1990.       info.xhr = 'data';
  1991.     }
  1992.     return info;
  1993.   },
  1994.  
  1995.   isFollowableUrl(url, rule) {
  1996.     const f = rule.follow;
  1997.     return typeof f === 'function' ? f(url) : f;
  1998.   },
  1999. };
  2000.  
  2001. const Remoting = {
  2002.  
  2003.   gmXhr(url, opts = {}) {
  2004.     if (ai.req)
  2005.       tryCatch.call(ai.req, ai.req.abort);
  2006.     return new Promise((resolve, reject) => {
  2007.       ai.req = GM_xmlhttpRequest({
  2008.         url,
  2009.         method: 'GET',
  2010.         anonymous: (ai.rule || {}).anonymous,
  2011.         timeout: 10e3,
  2012.         ...opts,
  2013.         onload: done,
  2014.         onerror: done,
  2015.         ontimeout() {
  2016.           ai.req = null;
  2017.           reject(`Timeout fetching ${url}`);
  2018.         },
  2019.       });
  2020.       function done(r) {
  2021.         ai.req = null;
  2022.         if (r.status < 400 && !r.error)
  2023.           resolve(r);
  2024.         else
  2025.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2026.       }
  2027.     });
  2028.   },
  2029.  
  2030.   async getDoc(url) {
  2031.     const r = await (!ai.post ?
  2032.       Remoting.gmXhr(url) :
  2033.       Remoting.gmXhr(url, {
  2034.         method: 'POST',
  2035.         data: ai.post,
  2036.         headers: {
  2037.           'Content-Type': 'application/x-www-form-urlencoded',
  2038.           'Referer': url,
  2039.         },
  2040.       }));
  2041.     r.doc = new DOMParser().parseFromString(r.responseText, 'text/html');
  2042.     return r;
  2043.   },
  2044.  
  2045.   async getImage(url, pageUrl) {
  2046.     ai.bufBar = false;
  2047.     ai.bufStart = now();
  2048.     const response = await Remoting.gmXhr(url, {
  2049.       responseType: 'blob',
  2050.       headers: {
  2051.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2052.         Referer: pageUrl || (typeof ai.xhr === 'function' ? ai.xhr() : url),
  2053.       },
  2054.       onprogress: Remoting.getImageProgress,
  2055.     });
  2056.     Bar.set(false);
  2057.     const type = Remoting.guessMimeType(response);
  2058.     let b = response.response;
  2059.     if (!b) throw 'Empty response';
  2060.     if (b.type !== type)
  2061.       b = b.slice(0, b.size, type);
  2062.     return ai.xhr === 'data' ?
  2063.       Remoting.blobToDataUrl(b) :
  2064.       URL.createObjectURL(b);
  2065.   },
  2066.  
  2067.   getImageProgress(e) {
  2068.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2069.       ai.bufBar = true;
  2070.     if (ai.bufBar) {
  2071.       const pct = e.loaded / e.total * 100 | 0;
  2072.       const size = e.total / 1024 | 0;
  2073.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2074.     }
  2075.   },
  2076.  
  2077.   async findRedirect() {
  2078.     try {
  2079.       const {finalUrl} = await Remoting.gmXhr(ai.url, {
  2080.         method: 'HEAD',
  2081.         headers: {
  2082.           'Referer': location.href.split('#', 1)[0],
  2083.         },
  2084.       });
  2085.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2086.       if (!info || !info.url)
  2087.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2088.       Object.assign(ai, info);
  2089.       App.startSingle();
  2090.     } catch (e) {
  2091.       App.handleError(e);
  2092.     }
  2093.   },
  2094.  
  2095.   async saveFile() {
  2096.     const url = ai.popup.src || ai.popup.currentSrc;
  2097.     let name = Remoting.getFileName(ai.imageUrl || url);
  2098.     if (!name.includes('.'))
  2099.       name += '.jpg';
  2100.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2101.       $create('a', {href: url, download: name})
  2102.         .dispatchEvent(new MouseEvent('click'));
  2103.     } else {
  2104.       Status.set('+loading');
  2105.       GM_download({
  2106.         url,
  2107.         name,
  2108.         headers: {Referer: url},
  2109.         onerror: () => Bar.set(`Could not download ${name}.`, 'error'),
  2110.         onload: () => Status.set('-loading'),
  2111.         onprogress: Remoting.getImageProgress,
  2112.       });
  2113.     }
  2114.   },
  2115.  
  2116.   getFileName(url) {
  2117.     return decodeURIComponent(url).split('/').pop().replace(/[:#?].*/, '');
  2118.   },
  2119.  
  2120.   blobToDataUrl(blob) {
  2121.     return new Promise((resolve, reject) => {
  2122.       const fr = new FileReader();
  2123.       fr.onload = () => resolve(fr.result);
  2124.       fr.onerror = reject;
  2125.       fr.readAsDataURL(blob);
  2126.     });
  2127.   },
  2128.  
  2129.   guessMimeType({responseHeaders, finalUrl}) {
  2130.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2131.         !RegExp.$1.includes('text/plain'))
  2132.       return RegExp.$1;
  2133.     const ext = /\.([a-z0-9]+?)($|\?|#)/i.exec(finalUrl) ? RegExp.$1 : 'jpg';
  2134.     switch (ext.toLowerCase()) {
  2135.       case 'bmp': return 'image/bmp';
  2136.       case 'gif': return 'image/gif';
  2137.       case 'jpe': return 'image/jpeg';
  2138.       case 'jpeg': return 'image/jpeg';
  2139.       case 'jpg': return 'image/jpeg';
  2140.       case 'mp4': return 'video/mp4';
  2141.       case 'png': return 'image/png';
  2142.       case 'svg': return 'image/svg+xml';
  2143.       case 'tif': return 'image/tiff';
  2144.       case 'tiff': return 'image/tiff';
  2145.       case 'webm': return 'video/webm';
  2146.       default: return 'application/octet-stream';
  2147.     }
  2148.   },
  2149.  
  2150.   findImageUrl(n, url) {
  2151.     let html;
  2152.     const path =
  2153.       n.getAttribute('src') ||
  2154.       n.getAttribute('data-m4v') ||
  2155.       n.getAttribute('href') ||
  2156.       n.getAttribute('content') ||
  2157.       (html = n.outerHTML).includes('http') &&
  2158.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2159.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2160.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2161.   },
  2162. };
  2163.  
  2164. const Status = {
  2165.  
  2166.   set(status) {
  2167.     if (!status && !cfg.globalStatus) {
  2168.       ai.node && ai.node.removeAttribute(STATUS_ATTR);
  2169.       return;
  2170.     }
  2171.     const prefix = cfg.globalStatus ? PREFIX : '';
  2172.     const action = status && /^[+-]/.test(status) && status[0];
  2173.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2174.     const el = cfg.globalStatus ? doc.documentElement :
  2175.       name === 'edge' ? ai.popup :
  2176.         ai.node;
  2177.     if (!el) return;
  2178.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2179.     const oldValue = (el.getAttribute(attr) || '').trim();
  2180.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2181.     switch (action) {
  2182.       case '-':
  2183.         cls.delete(name);
  2184.         break;
  2185.       case false:
  2186.         for (const c of cls)
  2187.           if (c.startsWith(prefix) && c !== name)
  2188.             cls.delete(c);
  2189.       // fallthrough to +
  2190.       case '+':
  2191.         if (name)
  2192.           cls.add(name);
  2193.         break;
  2194.     }
  2195.     const newValue = [...cls].join(' ');
  2196.     if (newValue !== oldValue)
  2197.       el.setAttribute(attr, newValue);
  2198.   },
  2199.  
  2200.   loading(force) {
  2201.     if (!force) {
  2202.       clearTimeout(ai.timerStatus);
  2203.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2204.     } else if (!ai.popupLoaded) {
  2205.       Status.set('+loading');
  2206.     }
  2207.   },
  2208. };
  2209.  
  2210. const UrlMatcher = (() => {
  2211.   // string-to-regexp escaped chars
  2212.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2213.   // rx for '^' symbol in simple url match
  2214.   const RX_SEP = /[^\w%._-]/g;
  2215.   const RXS_SEP = RX_SEP.source;
  2216.   return match => {
  2217.     const results = [];
  2218.     for (const s of ensureArray(match)) {
  2219.       const pinDomain = s.startsWith('||');
  2220.       const pinStart = !pinDomain && s.startsWith('|');
  2221.       const endSep = s.endsWith('^');
  2222.       let fn;
  2223.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2224.       if (needle.includes('^')) {
  2225.         const plain = findLongestPart(needle);
  2226.         const rx = new RegExp(
  2227.           (pinStart ? '^' : '') +
  2228.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2229.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2230.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2231.         needle = [plain, rx];
  2232.         fn = regexp;
  2233.       } else if (pinStart) {
  2234.         fn = endSep ? equals : starts;
  2235.       } else if (pinDomain) {
  2236.         const slashPos = needle.indexOf('/');
  2237.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2238.         needle = [needle, domain, slashPos > 0, endSep];
  2239.         fn = startsDomainPrescreen;
  2240.       } else if (endSep) {
  2241.         fn = ends;
  2242.       } else {
  2243.         fn = has;
  2244.       }
  2245.       results.push({fn, this: needle});
  2246.     }
  2247.     return results.length > 1 ?
  2248.       {fn: checkArray, this: results} :
  2249.       results[0];
  2250.   };
  2251.   function checkArray(s) {
  2252.     return this.some(checkArrayItem, s);
  2253.   }
  2254.   function checkArrayItem(item) {
  2255.     return item.fn.call(item.this, this);
  2256.   }
  2257.   function equals(s) {
  2258.     return s.startsWith(this) && (
  2259.       s.length === this.length ||
  2260.       s.length === this.length + 1 && endsWithSep(s));
  2261.   }
  2262.   function starts(s) {
  2263.     return s.startsWith(this);
  2264.   }
  2265.   function ends(s) {
  2266.     return s.endsWith(this) || (
  2267.       s.length > this.length &&
  2268.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2269.       endsWithSep(s));
  2270.   }
  2271.   function has(s) {
  2272.     return s.includes(this);
  2273.   }
  2274.   function regexp(s) {
  2275.     return s.includes(this[0]) && this[1].test(s);
  2276.   }
  2277.   function endsWithSep(s) {
  2278.     RX_SEP.lastIndex = s.length - 1;
  2279.     return RX_SEP.test(s);
  2280.   }
  2281.   function startsDomainPrescreen(url) {
  2282.     return url.includes(this[0]) && startsDomain.call(this, url);
  2283.   }
  2284.   function startsDomain(url) {
  2285.     const [p, gap, host] = url.split('/', 3);
  2286.     if (gap || p && !p.endsWith(':'))
  2287.       return;
  2288.     const [needle, domain, pinDomainEnd, endSep] = this;
  2289.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2290.     for (; ; start++) {
  2291.       start = host.indexOf(domain, start);
  2292.       if (start < 0)
  2293.         return;
  2294.       if (!start || host[start - 1] === '.')
  2295.         break;
  2296.     }
  2297.     start += p.length + 2;
  2298.     return url.lastIndexOf(needle, start) === start &&
  2299.            (!endSep || start + needle.length === url.length);
  2300.   }
  2301.   function findLongestPart(s) {
  2302.     const len = s.length;
  2303.     let maxLen = 0;
  2304.     let start;
  2305.     for (let i = 0, j; i < len; i = j + 1) {
  2306.       j = s.indexOf('^', i);
  2307.       if (j < 0)
  2308.         j = len;
  2309.       if (j - i > maxLen) {
  2310.         maxLen = j - i;
  2311.         start = i;
  2312.       }
  2313.     }
  2314.     return maxLen < len ? s.substr(start, maxLen) : s;
  2315.   }
  2316. })();
  2317.  
  2318. const Util = {
  2319.  
  2320.   addStyle(name, css) {
  2321.     const id = `${PREFIX}style:${name}`;
  2322.     const el = doc.getElementById(id) ||
  2323.                css && $create('style', {id});
  2324.     if (!el) return;
  2325.     if (el.textContent !== css)
  2326.       el.textContent = css;
  2327.     if (el.parentElement !== doc.head)
  2328.       doc.head.appendChild(el);
  2329.     return el;
  2330.   },
  2331.  
  2332.   decodeHtmlEntities(s) {
  2333.     return s
  2334.       .replace(/&quot;/g, '"')
  2335.       .replace(/&apos;/g, '\'')
  2336.       .replace(/&lt;/g, '<')
  2337.       .replace(/&gt;/g, '>')
  2338.       .replace(/&amp;/g, '&');
  2339.   },
  2340.  
  2341.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2342.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2343.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2344.   },
  2345.  
  2346.   deepEqual(a, b) {
  2347.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2348.       return a === b;
  2349.     if (Array.isArray(a)) {
  2350.       return Array.isArray(b) &&
  2351.         a.length === b.length &&
  2352.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2353.     }
  2354.     const keys = Object.keys(a);
  2355.     return keys.length === Object.keys(b).length &&
  2356.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2357.   },
  2358.  
  2359.   forceLayout(node) {
  2360.     // eslint-disable-next-line no-unused-expressions
  2361.     node.clientHeight;
  2362.   },
  2363.  
  2364.   formatError(e, rule) {
  2365.     const message =
  2366.       e.message ||
  2367.       e.readyState && 'Request failed.' ||
  2368.       e.type === 'error' && `File can't be displayed.${
  2369.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2370.       }` ||
  2371.       e;
  2372.     const m = [
  2373.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold;color:yellow'],
  2374.       ['', 'font-weight:normal;color:unset'],
  2375.     ];
  2376.     m.push(...[
  2377.       rule.u && ['Url simple match: %o', rule.u],
  2378.       rule.e && ['Element match: %o', rule.e],
  2379.       rule.r && ['RegExp match: %o', rule.r],
  2380.       ai.url && ['URL: %s', ai.url],
  2381.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2382.       ['Node: %o', ai.node],
  2383.     ].filter(Boolean));
  2384.     return {
  2385.       message,
  2386.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2387.       consoleArgs: m.map(([, v]) => v),
  2388.     };
  2389.   },
  2390.  
  2391.   isVideoUrl(url) {
  2392.     return url.startsWith('data:video') ||
  2393.            !url.startsWith('data:') && /\.(webm|mp4)($|\?)/.test(url);
  2394.   },
  2395.  
  2396.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2397.   maybeDecodeUrl(url) {
  2398.     if (!url) return url;
  2399.     const iPct = url.indexOf('%');
  2400.     const iColon = url.indexOf(':');
  2401.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2402.       decodeURIComponent(url) :
  2403.       url;
  2404.   },
  2405.  
  2406.   newFunction(...args) {
  2407.     try {
  2408.       return App.NOP || new Function(...args);
  2409.     } catch (e) {
  2410.       if (!e.message.includes('unsafe-eval'))
  2411.         throw e;
  2412.       App.NOP = () => {};
  2413.       return App.NOP;
  2414.     }
  2415.   },
  2416.  
  2417.   rel2abs(rel, abs = location.href) {
  2418.     try {
  2419.       return rel.startsWith('data:') ? rel :
  2420.         rel.startsWith('blob:') ? '' : // blobs don't work because they're usually revoked
  2421.           new URL(rel, abs).href;
  2422.     } catch (e) {
  2423.       return rel;
  2424.     }
  2425.   },
  2426.  
  2427.   suppressTooltip() {
  2428.     for (const node of [
  2429.       ai.node.parentNode,
  2430.       ai.node,
  2431.       ai.node.firstElementChild,
  2432.     ]) {
  2433.       const t = (node || 0).title;
  2434.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2435.         ai.tooltip = {node, text: t};
  2436.         node.title = '';
  2437.         break;
  2438.       }
  2439.     }
  2440.   },
  2441.  
  2442.   tabFixUrl() {
  2443.     return ai.rule.tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2444.            navigator.userAgent.includes('Gecko/') &&
  2445.            flattenHtml(`data:text/html;charset=utf8,
  2446.       <style>
  2447.         body {
  2448.           margin: 0;
  2449.           padding: 0;
  2450.           background: #222;
  2451.         }
  2452.         .fit {
  2453.           overflow: hidden
  2454.         }
  2455.         .fit > img {
  2456.           max-width: 100vw;
  2457.           max-height: 100vh;
  2458.         }
  2459.         body > img {
  2460.           margin: auto;
  2461.           position: absolute;
  2462.           left: 0;
  2463.           right: 0;
  2464.           top: 0;
  2465.           bottom: 0;
  2466.         }
  2467.       </style>
  2468.       <body class=fit>
  2469.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2470.       </body>
  2471.     `).replace(/#/g, '%23');
  2472.   },
  2473. };
  2474.  
  2475. function setup({rule} = {}) {
  2476.   if (window !== top) return;
  2477.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2478.   // FF is superslow with textareas, bugzil.la/190147
  2479.   let root = (elConfig || 0).shadowRoot;
  2480.   let {blankRuleElement} = setup;
  2481.   /** @type NodeList */
  2482.   const UI = new Proxy({}, {
  2483.     get(_, id) {
  2484.       return root.getElementById(id);
  2485.     },
  2486.   });
  2487.   if (!rule || !elConfig)
  2488.     init(new Config({save: true}));
  2489.   if (rule)
  2490.     installRule(rule);
  2491.  
  2492.   function closeSetup(event) {
  2493.     const isApply = this.id === 'apply';
  2494.     if (event && (this.id === 'ok' || isApply)) {
  2495.       cfg = collectConfig({save: true, clone: isApply});
  2496.       Ruler.init();
  2497.       if (isApply) {
  2498.         renderCustomScales(cfg);
  2499.         return;
  2500.       }
  2501.     }
  2502.     $remove(elConfig);
  2503.     elConfig = null;
  2504.   }
  2505.  
  2506.   function collectConfig({save, clone} = {}) {
  2507.     let data = {};
  2508.     for (const el of $$('input[id], select[id]', root))
  2509.       data[el.id] = el.type === 'checkbox' ? el.checked :
  2510.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  2511.           el.value || '';
  2512.     Object.assign(data, {
  2513.       css: UI.css.value.trim(),
  2514.       delay: UI.delay.valueAsNumber * 1000,
  2515.       hosts: collectRules(),
  2516.       scale: Math.max(1, UI.scale.valueAsNumber || 0),
  2517.       scales: UI.scales.value
  2518.         .trim()
  2519.         .split(/[,;]*\s+/)
  2520.         .map(x => x.replace(',', '.'))
  2521.         .filter(x => !isNaN(parseFloat(x))),
  2522.     });
  2523.     if (clone)
  2524.       data = JSON.parse(JSON.stringify(data));
  2525.     return new Config({data, save});
  2526.   }
  2527.  
  2528.   function collectRules() {
  2529.     return [...UI.rules.children]
  2530.       .map(el => [el.value.trim(), el[RULE]])
  2531.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  2532.       .map(([s, json]) => json || s)
  2533.       .filter(Boolean);
  2534.   }
  2535.  
  2536.   function exportSettings(e) {
  2537.     dropEvent(e);
  2538.     const txt = $create('textarea', {
  2539.       style: 'opacity:0; position:absolute',
  2540.       value: JSON.stringify(collectConfig(), null, '  '),
  2541.     });
  2542.     root.appendChild(txt);
  2543.     txt.select();
  2544.     txt.focus();
  2545.     document.execCommand('copy');
  2546.     e.target.focus();
  2547.     txt.remove();
  2548.     UI.exportNotification.hidden = false;
  2549.     setTimeout(() => (UI.exportNotification.hidden = true), 1000);
  2550.   }
  2551.  
  2552.   function importSettings(e) {
  2553.     dropEvent(e);
  2554.     const s = prompt('Paste settings:');
  2555.     if (s)
  2556.       init(new Config({data: s}));
  2557.   }
  2558.  
  2559.   function checkRule({target: el}) {
  2560.     let json, error;
  2561.     const prev = el.previousElementSibling;
  2562.     if (el.value) {
  2563.       json = Ruler.parse(el.value);
  2564.       error = json instanceof Error && (json.message || String(json));
  2565.       if (!prev)
  2566.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2567.     } else if (prev) {
  2568.       prev.focus();
  2569.       el.remove();
  2570.     }
  2571.     el[RULE] = !error && json;
  2572.     el.title = error || '';
  2573.     el.setCustomValidity(error || '');
  2574.   }
  2575.  
  2576.   function focusRule({type, target: el, relatedTarget: from}) {
  2577.     if (el === this)
  2578.       return;
  2579.     if (type === 'paste') {
  2580.       setTimeout(() => focusRule.call(this, {target: el}));
  2581.       return;
  2582.     }
  2583.     if (el[RULE])
  2584.       el.value = Ruler.format(el[RULE], {expand: true});
  2585.     const h = clamp(el.scrollHeight, 15, elConfig.clientHeight / 4);
  2586.     if (h > el.offsetHeight)
  2587.       el.style.minHeight = h + 'px';
  2588.     if (!this.contains(from))
  2589.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  2590.     if (from) {
  2591.       from.style.minHeight = '';
  2592.       if (from[RULE])
  2593.         from.value = Ruler.format(from[RULE]);
  2594.     }
  2595.   }
  2596.  
  2597.   function installRule(rule) {
  2598.     const inputs = UI.rules.children;
  2599.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  2600.     if (!el) {
  2601.       el = inputs[0];
  2602.       el[RULE] = rule;
  2603.       el.value = Ruler.format(rule);
  2604.       el.hidden = false;
  2605.       const i = Math.max(0, collectRules().indexOf(rule));
  2606.       inputs[i].insertAdjacentElement('afterend', el);
  2607.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2608.     }
  2609.     const rect = el.getBoundingClientRect();
  2610.     if (rect.bottom < 0 ||
  2611.         rect.bottom > el.parentNode.offsetHeight)
  2612.       el.scrollIntoView();
  2613.     el.classList.add('highlight');
  2614.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  2615.     el.focus();
  2616.   }
  2617.  
  2618.   function init(config) {
  2619.     $remove(elConfig);
  2620.     elConfig = $create('div', {contentEditable: true});
  2621.     root = elConfig.attachShadow({mode: 'open'});
  2622.     root.innerHTML = createConfigHtml();
  2623.     initEvents();
  2624.     renderValues(config);
  2625.     renderCustomScales(config);
  2626.     initRules(config);
  2627.     doc.body.appendChild(elConfig);
  2628.     requestAnimationFrame(() => {
  2629.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elConfig.clientHeight / 4) + 'px';
  2630.     });
  2631.   }
  2632.  
  2633.   function initEvents() {
  2634.     UI.apply.onclick = UI.cancel.onclick = UI.ok.onclick = UI.x.onclick = closeSetup;
  2635.     UI.export.onclick = exportSettings;
  2636.     UI.import.onclick = importSettings;
  2637.     UI.install.onclick = setupRuleInstaller;
  2638.     const {/** @type {HTMLTextAreaElement} */ cssApp} = UI;
  2639.     UI.reveal.onclick = e => {
  2640.       e.preventDefault();
  2641.       cssApp.hidden = !cssApp.hidden;
  2642.       if (!cssApp.hidden) {
  2643.         if (!cssApp.value) {
  2644.           App.updateStyles();
  2645.           cssApp.value = App.globalStyle.trim();
  2646.           cssApp.setSelectionRange(0, 0);
  2647.         }
  2648.         cssApp.focus();
  2649.       }
  2650.     };
  2651.     UI.start.onchange = function () {
  2652.       UI.delay.closest('label').hidden =
  2653.         UI.preload.closest('label').hidden =
  2654.           this.value !== 'auto';
  2655.     };
  2656.     UI.start.onchange();
  2657.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  2658.     // color
  2659.     for (const el of $$('[type="color"]', root)) {
  2660.       el.oninput = colorOnInput;
  2661.       el.elSwatch = el.nextElementSibling;
  2662.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  2663.       el.elOpacity.elColor = el;
  2664.     }
  2665.     function colorOnInput() {
  2666.       this.elSwatch.style.setProperty('--color',
  2667.         Util.color(this.value, this.elOpacity.valueAsNumber));
  2668.     }
  2669.     // range
  2670.     for (const el of $$('[type="range"]', root)) {
  2671.       el.oninput = rangeOnInput;
  2672.       el.onblur = rangeOnBlur;
  2673.       el.addEventListener('focusin', rangeOnFocus);
  2674.     }
  2675.     function rangeOnBlur(e) {
  2676.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  2677.         this.elEdit.onblur(e);
  2678.     }
  2679.     function rangeOnFocus() {
  2680.       if (this.elEdit) return;
  2681.       const {min, max, step, value} = this;
  2682.       this.elEdit = $create('input', {
  2683.         value, min, max, step,
  2684.         className: 'range-edit',
  2685.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  2686.         type: 'number',
  2687.         elRange: this,
  2688.         onblur: rangeEditOnBlur,
  2689.         oninput: rangeEditOnInput,
  2690.       });
  2691.       this.insertAdjacentElement('afterend', this.elEdit);
  2692.     }
  2693.     function rangeOnInput() {
  2694.       this.title = (this.dataset.title || '').replace('$', this.value);
  2695.       if (this.elColor) this.elColor.oninput();
  2696.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  2697.     }
  2698.     // range-edit
  2699.     function rangeEditOnBlur(e) {
  2700.       if (e.relatedTarget !== this.elRange) {
  2701.         this.remove();
  2702.         this.elRange.elEdit = null;
  2703.       }
  2704.     }
  2705.     function rangeEditOnInput() {
  2706.       this.elRange.valueAsNumber = this.valueAsNumber;
  2707.       this.elRange.oninput();
  2708.     }
  2709.     // prevent the main page from interpreting key presses in inputs as hotkeys
  2710.     // which may happen since it sees only the outer <div> in the event |target|
  2711.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  2712.   }
  2713.  
  2714.   function initRules(config) {
  2715.     const rules = UI.rules;
  2716.     rules.addEventListener('input', checkRule);
  2717.     if (!isFF) rules.addEventListener('focusin', focusRule);
  2718.     if (!isFF) rules.addEventListener('paste', focusRule);
  2719.     blankRuleElement =
  2720.       setup.blankRuleElement =
  2721.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  2722.     for (const rule of config.hosts || []) {
  2723.       const el = blankRuleElement.cloneNode();
  2724.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  2725.       rules.appendChild(el);
  2726.       checkRule({target: el});
  2727.     }
  2728.     const search = UI.search;
  2729.     search.oninput = () => {
  2730.       setup.search = search.value;
  2731.       const s = search.value.toLowerCase();
  2732.       for (const el of rules.children)
  2733.         el.hidden = s && !el.value.toLowerCase().includes(s);
  2734.     };
  2735.     search.value = setup.search || '';
  2736.     if (search.value)
  2737.       search.oninput();
  2738.   }
  2739.  
  2740.   function renderCustomScales(config) {
  2741.     UI.scales.value = config.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  2742.   }
  2743.  
  2744.   function renderValues(config) {
  2745.     for (const el of $$('input[id], select[id], textarea[id]', root))
  2746.       if (el.id in config)
  2747.         el[el.type === 'checkbox' ? 'checked' : 'value'] = config[el.id];
  2748.     for (const el of $$('input[type="range"]', root))
  2749.       el.oninput();
  2750.     for (const el of $$('a[href^="http"]', root))
  2751.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  2752.     UI.delay.value = config.delay / 1000;
  2753.   }
  2754. }
  2755.  
  2756. async function setupRuleInstaller(e) {
  2757.   dropEvent(e);
  2758.   const parent = this.parentElement;
  2759.   parent.children.installLoading.hidden = false;
  2760.   this.remove();
  2761.   let rules;
  2762.  
  2763.   try {
  2764.     rules = extractRules(await Remoting.getDoc(this.href));
  2765.     const selector = $create('select', {
  2766.       size: 8,
  2767.       style: 'width: 100%',
  2768.       ondblclick: e => e.target !== selector && maybeSetup(e),
  2769.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  2770.     });
  2771.     selector.append(...rules.map(renderRule));
  2772.     selector.selectedIndex = findMatchingRuleIndex();
  2773.     // remove "name" since the installed rules don't need it
  2774.     for (const r of rules)
  2775.       delete r.name;
  2776.     parent.children.installLoading.remove();
  2777.     parent.children.installHint.hidden = false;
  2778.     parent.appendChild(selector);
  2779.     requestAnimationFrame(() => {
  2780.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  2781.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  2782.     });
  2783.   } catch (e) {
  2784.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  2785.   }
  2786.  
  2787.   function extractRules({doc}) {
  2788.     const code = $('script', doc).textContent;
  2789.     // sort by name
  2790.     return JSON.parse(code.match(/var\s+rules\s*=\s*(\[.+]);?[\r\n]/)[1])
  2791.       .filter(r => !r.d || hostname.includes(r.d))
  2792.       .sort((a, b) =>
  2793.         (a = a.name.toLowerCase()) < (b = b.name.toLowerCase()) ? -1 :
  2794.           a > b ? 1 :
  2795.             0);
  2796.   }
  2797.  
  2798.   function findMatchingRuleIndex() {
  2799.     const dottedHost = `.${hostname}.`;
  2800.     const weighParts = (n, part) => n + (dottedHost.includes(`.${part}.`) && part.length);
  2801.     const weighName = name => name.toLowerCase().split(/[^a-z\d.-]+/i).reduce(weighParts, 0);
  2802.     return rules.reduce((max, {d, name}, index) => {
  2803.       const count = !!(d && hostname.includes(d)) * 10 + weighName(name);
  2804.       return count > max.count ? {count, index} : max;
  2805.     }, {count: 0, index: 0}).index;
  2806.   }
  2807.  
  2808.   function renderRule(r) {
  2809.     const {name, ...copy} = r;
  2810.     return $create('option', {
  2811.       textContent: name,
  2812.       title: Ruler.format(copy, {expand: true})
  2813.         .replace(/^{|\s*}$/g, '')
  2814.         .split('\n')
  2815.         .slice(0, 12)
  2816.         .map(renderTitleLine)
  2817.         .filter(Boolean)
  2818.         .join('\n'),
  2819.     });
  2820.   }
  2821.  
  2822.   function renderTitleLine(line, i, arr) {
  2823.     return (
  2824.       // show ... on 10th line if there are more lines
  2825.       i === 9 && arr.length > 10 ? '...' :
  2826.         i > 10 ? '' :
  2827.           // truncate to 100 chars
  2828.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  2829.             // strip the leading space
  2830.             .replace(/^\s/, ''));
  2831.   }
  2832.  
  2833.   function maybeSetup(e) {
  2834.     if (!modKeyPressed(e))
  2835.       setup({rule: rules[e.currentTarget.selectedIndex]});
  2836.   }
  2837. }
  2838.  
  2839. function createConfigHtml() {
  2840.   const MPIV_BASE_URL = 'https://w9p.co/userscripts/mpiv/';
  2841.   const scalesHint = 'Leave it empty and click Apply or Save to restore the default values.';
  2842.   const trimLeft = s => s.trim().replace(/\n\s+/g, '\n');
  2843.   return flattenHtml(`
  2844. <style>
  2845.   :host {
  2846.     all: initial !important;
  2847.     position: fixed !important;
  2848.     z-index: 2147483647 !important;
  2849.     top: 20px !important;
  2850.     right: 20px !important;
  2851.     padding: 1.5em !important;
  2852.     color: #000 !important;
  2853.     background: #eee !important;
  2854.     box-shadow: 5px 5px 25px 2px #000 !important;
  2855.     width: 32em !important;
  2856.     border: 1px solid black !important;
  2857.     display: flex !important;
  2858.     flex-direction: column !important;
  2859.   }
  2860.   main {
  2861.     font: 12px/15px sans-serif;
  2862.   }
  2863.   ul {
  2864.     max-height: calc(100vh - 200px);
  2865.     margin: 10px 0 15px 0;
  2866.     padding: 0;
  2867.     list-style: none;
  2868.   }
  2869.   li {
  2870.     margin: 0;
  2871.     padding: .25em 0;
  2872.   }
  2873.   li.options {
  2874.     display: flex;
  2875.     align-items: center;
  2876.     justify-content: space-between;
  2877.   }
  2878.   li.row {
  2879.     flex-wrap: wrap;
  2880.     justify-content: flex-start;
  2881.   }
  2882.   li.row label {
  2883.     flex-direction: row;
  2884.     align-items: center;
  2885.   }
  2886.   li.row input {
  2887.     margin-right: .25em;
  2888.   }
  2889.   li.stretch label {
  2890.     flex: 1;
  2891.     white-space: nowrap;
  2892.   }
  2893.   li.stretch label > span {
  2894.     display: flex;
  2895.     flex-direction: row;
  2896.     flex: 1;
  2897.   }
  2898.   label {
  2899.     display: inline-flex;
  2900.     flex-direction: column;
  2901.   }
  2902.   label:not(:last-child) {
  2903.     margin-right: 1em;
  2904.   }
  2905.   input, select {
  2906.     min-height: 1.6em;
  2907.     box-sizing: border-box;
  2908.   }
  2909.   input[type=checkbox] {
  2910.     margin-left: 0;
  2911.   }
  2912.   input[type=number] {
  2913.     width: 4em;
  2914.   }
  2915.   input:not([type=checkbox])  {
  2916.     padding: 0 .25em;
  2917.   }
  2918.   input[type=range] {
  2919.     flex: 1;
  2920.     width: 100%;
  2921.     margin: 0 .25em;
  2922.     padding: 0;
  2923.     filter: saturate(0);
  2924.     opacity: .5;
  2925.   }
  2926.   u + input[type=range] {
  2927.     max-width: 3em;
  2928.   }
  2929.   input[type=range]:hover {
  2930.     filter: none;
  2931.     opacity: 1;
  2932.   }
  2933.   input[type=color] {
  2934.     position: absolute;
  2935.     width: calc(1.5em + 2px);
  2936.     opacity: 0;
  2937.     cursor: pointer;
  2938.   }
  2939.   u {
  2940.     display: inline-block;
  2941.     position: relative;
  2942.     width: 1.5em;
  2943.     height: 1.5em;
  2944.     border: 1px solid #888;
  2945.     pointer-events: none;
  2946.     color: #888;
  2947.     background-image:
  2948.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  2949.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  2950.     background-size: .5em .5em;
  2951.     background-position: 0 0, .25em .25em;
  2952.   }
  2953.   u::after {
  2954.     position: absolute;
  2955.     top: 0;
  2956.     left: 0;
  2957.     right: 0;
  2958.     bottom: 0;
  2959.     content: "";
  2960.     background-color: var(--color);
  2961.   }
  2962.   .range-edit {
  2963.     position: absolute;
  2964.     box-shadow: 0 0.25em 1em #000;
  2965.     z-index: 99;
  2966.   }
  2967.   #rules input,
  2968.   textarea {
  2969.     flex: 1;
  2970.     resize: vertical;
  2971.     margin: 1px 0;
  2972.     font: 11px/1.25 Consolas, monospace;
  2973.   }
  2974.   :invalid {
  2975.     background-color: #f002;
  2976.     border-color: #800;
  2977.   }
  2978.   code {
  2979.     font-weight: bold;
  2980.   }
  2981.   a {
  2982.     text-decoration: none;
  2983.   }
  2984.   a:hover {
  2985.     text-decoration: underline;
  2986.   }
  2987.   button {
  2988.     padding: .2em 1em;
  2989.     margin: 0 1em;
  2990.   }
  2991.   .column {
  2992.     display: flex;
  2993.     flex-direction: column;
  2994.   }
  2995.   .highlight {
  2996.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  2997.     animation-fill-mode: both;
  2998.   }
  2999.   #rules input,
  3000.   #rules textarea {
  3001.     word-break: break-all;
  3002.   }
  3003.   #x {
  3004.     position: absolute;
  3005.     top: 0;
  3006.     right: 0;
  3007.     padding: 4px 8px;
  3008.     cursor: pointer;
  3009.     user-select: none;
  3010.   }
  3011.   #x:hover {
  3012.     background-color: #8884;
  3013.   }
  3014.   #cssApp {
  3015.     color: seagreen;
  3016.   }
  3017.   #exportNotification {
  3018.     color: green;
  3019.     font-weight: bold;
  3020.     position: absolute;
  3021.     left: 0;
  3022.     right: 0;
  3023.     bottom: 2px;
  3024.   }
  3025.   #installHint {
  3026.     color: green;
  3027.   }
  3028.   @keyframes fade-in {
  3029.     from { background-color: deepskyblue }
  3030.     to {}
  3031.   }
  3032.   @media (prefers-color-scheme: dark) {
  3033.     :host {
  3034.       color: #aaa !important;
  3035.       background: #333 !important;
  3036.     }
  3037.     a {
  3038.       color: deepskyblue;
  3039.     }
  3040.     textarea, input, select {
  3041.       background: #111;
  3042.       color: #BBB;
  3043.       border: 1px solid #555;
  3044.     }
  3045.     input[type=checkbox] {
  3046.       filter: invert(1);
  3047.     }
  3048.     input[type=range] {
  3049.       filter: invert(1) saturate(0);
  3050.     }
  3051.     input[type=range]:hover {
  3052.       filter: invert(1);
  3053.     }
  3054.     @supports (-moz-appearance: none) {
  3055.       input[type=checkbox],
  3056.       input[type=range],
  3057.       input[type=range]:hover {
  3058.         filter: none;
  3059.       }
  3060.     }
  3061.     .range-edit {
  3062.       box-shadow: 0 .5em 1em .5em #000;
  3063.     }
  3064.     #cssApp {
  3065.       color: darkseagreen;
  3066.     }
  3067.     #installHint {
  3068.       color: greenyellow;
  3069.     }
  3070.   }
  3071. </style>
  3072. <main>
  3073.   <a href="${MPIV_BASE_URL}">${GM_info.script.name}</a>
  3074.   <div id=x>x</div>
  3075.   <ul class=column>
  3076.     <li class=options>
  3077.       <label>Popup shows on
  3078.         <select id=start>
  3079.           <option value=auto>automatically
  3080.           <option value=context>Right click / Ctrl
  3081.           <option value=ctrl>Ctrl
  3082.         </select>
  3083.       </label>
  3084.       <label>after, sec<input id=delay type=number min=0.05 max=10 step=0.05 title=seconds></label>
  3085.       <label title="Activate only if the full version of the hovered image is that many times larger">
  3086.         if larger <input id=scale type=number min=1 max=100 step=.05>
  3087.       </label>
  3088.       <label>Zoom activates on
  3089.         <select id=zoom>
  3090.           <option value=context>Right click / Shift
  3091.           <option value=wheel>Wheel up / Shift
  3092.           <option value=shift>Shift
  3093.           <option value=auto>automatically
  3094.         </select>
  3095.       </label>
  3096.       <label>...and zooms to
  3097.         <select id=fit>
  3098.           <option value=all>fit to window
  3099.           <option value=large>fit if larger
  3100.           <option value=no>100%
  3101.           <option value="" title="Use custom scale factors">custom
  3102.         </select>
  3103.       </label>
  3104.     </li>
  3105.     <li class=options>
  3106.       <label>When fully zoomed out:
  3107.         <select id=zoomOut>
  3108.           <option value=stay>stay in zoom mode
  3109.           <option value=auto>stay if still hovered
  3110.           <option value=close>close popup
  3111.         </select>
  3112.       </label>
  3113.       <label style="flex: 1" title="${trimLeft(`
  3114.         0 = fit to window,
  3115.         0! = same as 0 but also removes smaller values,
  3116.         * after a value marks the default zoom factor, for example: 1*
  3117.         The popup won't shrink below the image's natural size or window size for bigger mages.
  3118.         ${scalesHint}
  3119.       `)}">Custom scale factors to use if “zooms to” is set to “custom”:
  3120.         <input id=scales placeholder="${scalesHint}">
  3121.       </label>
  3122.     </li>
  3123.     <li class="options row">
  3124.       <label><input type=checkbox id=center>Always centered</label>
  3125.       <label title="Disable only if you spoof the HTTP headers yourself">
  3126.         <input type=checkbox id=xhr>Anti-hotlinking workaround
  3127.       </label>
  3128.       <label><input type=checkbox id=preload>Start preloading immediately</label>
  3129.       <label><input type=checkbox id=imgtab>Run in image tabs</label>
  3130.       <label title="Don't enable unless you explicitly use it in your custom CSS">
  3131.         <input type=checkbox id=globalStatus>Expose status on &lt;html&gt; node (may cause slowdowns)
  3132.       </label>
  3133.     </li>
  3134.     <li class="options stretch">
  3135.       <label>Background
  3136.         <span>
  3137.           <input id=uiBackgroundColor type=color><u></u>
  3138.           <input id=uiBackgroundOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3139.         </span>
  3140.       </label>
  3141.       <label>Border color, opacity, size
  3142.         <span>
  3143.           <input id=uiBorderColor type=color><u></u>
  3144.           <input id=uiBorderOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3145.           <input id=uiBorder type=range min=0 max=20 step=1 data-title="Border size: $px">
  3146.         </span>
  3147.       </label>
  3148.       <label>Shadow color, opacity, size
  3149.         <span>
  3150.           <input id=uiShadowColor type=color><u></u>
  3151.           <input id=uiShadowOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3152.           <input id=uiShadow type=range min=0 max=100 step=1 data-title="
  3153.             ${'Shadow blur radius: $px\n"0" disables the shadow.'}">
  3154.         </span>
  3155.       </label>
  3156.       <label>Padding
  3157.         <span><input id=uiPadding type=range min=0 max=100 step=1 data-title="Padding: $px"></span>
  3158.       </label>
  3159.       <label>Margin
  3160.         <span><input id=uiMargin type=range min=0 max=100 step=1 data-title="Margin: $px"></span>
  3161.       </label>
  3162.     </li>
  3163.     <li>
  3164.       <a href="${MPIV_BASE_URL}css.html">Custom CSS:</a>
  3165.       e.g. <b>#mpiv-popup { animation: none !important }</b>
  3166.       <a href="#" id=reveal style="float: right"
  3167.          title="You can copy parts of it to override them in your custom CSS">
  3168.          View the built-in CSS</a>
  3169.       <div class=column>
  3170.         <textarea id=css spellcheck=false></textarea>
  3171.         <textarea id=cssApp spellcheck=false hidden readonly rows=30></textarea>
  3172.       </div>
  3173.     </li>
  3174.     <li style="display: flex; justify-content: space-between;">
  3175.       <div><a href="${MPIV_BASE_URL}host_rules.html">Custom host rules:</a></div>
  3176.       <div style="white-space: nowrap">
  3177.         To disable, put any symbol except <code>a..z 0..9 - .</code><br>
  3178.         in "d" value, for example <code>"d": "!foo.com"</code>
  3179.       </div>
  3180.       <div>
  3181.         <input id=search type=search placeholder=Search style="width: 10em; margin-left: 1em">
  3182.       </div>
  3183.     </li>
  3184.     <li style="margin-left: -3px; margin-right: -3px; overflow-y: auto; padding-left: 3px; padding-right: 3px;">
  3185.       <div id=rules class=column>
  3186.         ${isFF ? '<input spellcheck=false>' : '<textarea rows=1 spellcheck=false></textarea>'}
  3187.       </div>
  3188.     </li>
  3189.     <li>
  3190.       <div hidden id=installLoading>Loading...</div>
  3191.       <div hidden id=installHint>Double-click the rule (or select and press Enter) to add it.
  3192.         Click <code>Apply</code> or <code>Save</code> to confirm.</div>
  3193.       <a href="${MPIV_BASE_URL}more_host_rules.html" id=install>Install rule from repository...</a>
  3194.     </li>
  3195.   </ul>
  3196.   <div style="text-align:center">
  3197.     <button id=ok accesskey=s>Save</button>
  3198.     <button id=apply accesskey=a>Apply</button>
  3199.     <button id=import style="margin-right: 0">Import</button>
  3200.     <button id=export style="margin-left: 0">Export</button>
  3201.     <button id=cancel>Cancel</button>
  3202.     <div id=exportNotification hidden>Copied to clipboard.</div>
  3203.   </div>
  3204. </main>`);
  3205. }
  3206.  
  3207. function createGlobalStyle() {
  3208.   App.globalStyle = /*language=CSS*/ (String.raw`
  3209. #\mpiv-bar {
  3210.   position: fixed;
  3211.   z-index: 2147483647;
  3212.   top: 0;
  3213.   left: 0;
  3214.   right: 0;
  3215.   opacity: 0;
  3216.   transition: opacity 1s ease .25s;
  3217.   text-align: center;
  3218.   font-family: sans-serif;
  3219.   font-size: 15px;
  3220.   font-weight: bold;
  3221.   background: #0005;
  3222.   color: white;
  3223.   padding: 4px 10px;
  3224.   text-shadow: .5px .5px 2px #000;
  3225. }
  3226. #\mpiv-bar.\mpiv-show {
  3227.   opacity: 1;
  3228. }
  3229. #\mpiv-bar[data-zoom]::after {
  3230.   content: " (" attr(data-zoom) ")";
  3231.   opacity: .8;
  3232. }
  3233. #\mpiv-popup.\mpiv-show {
  3234.   display: inline;
  3235. }
  3236. #\mpiv-popup {
  3237.   display: none;
  3238.   cursor: none;
  3239.   animation: .2s \mpiv-fadein both;
  3240.   transition: box-shadow .25s, background-color .25s;
  3241. ${App.popupStyleBase = `
  3242.   border: none;
  3243.   box-sizing: border-box;
  3244.   position: fixed;
  3245.   z-index: 2147483647;
  3246.   padding: 0;
  3247.   margin: 0;
  3248.   top: 0;
  3249.   left: 0;
  3250.   width: auto;
  3251.   height: auto;
  3252.   transform-origin: top left;
  3253.   max-width: none;
  3254.   max-height: none;
  3255. `}
  3256. }
  3257. #\mpiv-popup.\mpiv-show {
  3258.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3259.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3260.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3261.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3262. }
  3263. #\mpiv-popup.\mpiv-show[loaded] {
  3264.   background-color: ${Util.color('Background')};
  3265.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3266. }
  3267. #\mpiv-popup.\mpiv-zoom-max {
  3268.   image-rendering: pixelated;
  3269. }
  3270. @keyframes \mpiv-fadein {
  3271.   from {
  3272.     opacity: 0;
  3273.     border-color: transparent;
  3274.   }
  3275.   to {
  3276.     opacity: 1;
  3277.   }
  3278. }
  3279. ` + (cfg.globalStatus ? String.raw`
  3280. .\mpiv-loading:not(.\mpiv-preloading) * {
  3281.   cursor: progress !important;
  3282. }
  3283. .\mpiv-edge #\mpiv-popup {
  3284.   cursor: default;
  3285. }
  3286. .\mpiv-error * {
  3287.   cursor: not-allowed !important;
  3288. }
  3289. .\mpiv-ready *, .\mpiv-large * {
  3290.   cursor: zoom-in !important;
  3291. }
  3292. .\mpiv-shift * {
  3293.   cursor: default !important;
  3294. }
  3295. ` : String.raw`
  3296. [\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]) {
  3297.   cursor: progress !important;
  3298. }
  3299. #\mpiv-popup[\mpiv-status~="edge"] {
  3300.   cursor: default !important;
  3301. }
  3302. [\mpiv-status~="error"] {
  3303.   cursor: not-allowed !important;
  3304. }
  3305. [\mpiv-status~="ready"],
  3306. [\mpiv-status~="large"] {
  3307.   cursor: zoom-in !important;
  3308. }
  3309. [\mpiv-status~="shift"] {
  3310.   cursor: default !important;
  3311. }
  3312. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3313.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3314.   return App.globalStyle;
  3315. }
  3316.  
  3317. //#region Global utilities
  3318.  
  3319. const clamp = (v, min, max) => v < min ? min : v > max ? max : v;
  3320. const compareNumbers = (a, b) => a - b;
  3321. const flattenHtml = str => str.trim().replace(/\n\s*/g, '').replace(/\x20?([:>])\x20/g, '$1');
  3322. const dropEvent = e => (e.preventDefault(), e.stopPropagation());
  3323. const ensureArray = v => Array.isArray(v) ? v : [v];
  3324. const modKeyPressed = e => e.altKey || e.shiftKey || e.ctrlKey || e.metaKey;
  3325. const now = () => performance.now();
  3326. const sumProps = (...props) => props.reduce((sum, v) => sum + (parseFloat(v) || 0), 0);
  3327. const tryCatch = function (fn, ...args) {
  3328.   try {
  3329.     return fn.apply(this, args);
  3330.   } catch (e) {}
  3331. };
  3332.  
  3333. const $ = (sel, node = doc) => node.querySelector(sel) || false;
  3334. const $$ = (sel, node = doc) => node.querySelectorAll(sel);
  3335. const $create = (tag, props) => Object.assign(document.createElement(tag), props);
  3336. const $css = (el, props) => Object.entries(props).forEach(([k, v]) =>
  3337.   el.style.setProperty(k, v, 'important'));
  3338. const $many = (q, doc) => q && ensureArray(q).reduce((el, sel) => el || $(sel, doc), null);
  3339. const $prop = (sel, prop, node = doc) => (node = $(sel, node)) && node[prop] || '';
  3340. const $propUp = (node, prop) => (node = node.closest(`[${prop}]`)) &&
  3341.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) || '';
  3342. const $remove = node => node && node.remove();
  3343.  
  3344. const isFF = CSS.supports('-moz-appearance', 'none');
  3345.  
  3346. //#endregion
  3347.  
  3348. //#region Init
  3349. cfg = new Config({save: true});
  3350. App.isImageTab = ((first = doc.body.firstElementChild) =>
  3351.   first && first === doc.body.lastElementChild && first.matches('img, video'))();
  3352. App.enabled = cfg.imgtab || !App.isImageTab;
  3353.  
  3354. GM_registerMenuCommand('MPIV: configure', setup);
  3355. doc.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  3356.  
  3357. if (['greasyfork.org', 'w9p.co', 'github.com'].includes(hostname)) {
  3358.   doc.addEventListener('click', e => {
  3359.     const el = e.target.closest('blockquote, code, pre');
  3360.     const text = el && el.textContent.trim() || '';
  3361.     let rule;
  3362.     if (!e.button && !modKeyPressed(e) &&
  3363.         text.startsWith('{') && text.endsWith('}') &&
  3364.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text) &&
  3365.         (rule = tryCatch(JSON.parse, text)) &&
  3366.         Object.keys(rule).some(k => /^[degqrsu]$/.test(k))) {
  3367.       setup({rule});
  3368.       dropEvent(e);
  3369.     }
  3370.   });
  3371. }
  3372.  
  3373. window.addEventListener('message', App.onMessage);
  3374. //#endregion