☰

Image Viewer

View full image without leaving the page or on a new tab without ads

  1. // ==UserScript==
  2. // @name         Image Viewer
  3. // @version      1.3.1
  4. // @description  View full image without leaving the page or on a new tab without ads
  5. // @namespace    https://github.com/nikolay-borzov
  6. // @author       nikolay-borzov
  7. // @license      MIT
  8. // @icon         https://raw.githubusercontent.com/nikolay-borzov/user-scripts/master/image-viewer/icon.png
  9. // @homepageURL  https://github.com/nikolay-borzov/user-scripts
  10. // @homepage     https://github.com/nikolay-borzov/user-scripts
  11. // @supportURL   https://github.com/nikolay-borzov/user-scripts/issues
  12. // @match        *://*/*
  13. // @connect      fastpic.org
  14. // @connect      fastpic.ru
  15. // @connect      ibb.co
  16. // @connect      imagebam.com
  17. // @connect      imagetwist.com
  18. // @connect      imagevenue.com
  19. // @connect      imgdrive.net
  20. // @connect      imgtaxi.com
  21. // @connect      www.turboimagehost.com
  22. // @noframes
  23. // @run-at       document-start
  24. // @exclude      http://imgbb.co/*
  25. // @exclude      https://adult-images.ru/*
  26. // @exclude      https://fastpic.org/*
  27. // @exclude      https://freescreens.ru/*
  28. // @exclude      https://imageban.ru/*
  29. // @exclude      https://imagetwist.com/*
  30. // @exclude      https://imgadult.com/*
  31. // @exclude      https://imgbase.ru/*
  32. // @exclude      https://imgbox.com/*
  33. // @exclude      https://imgbum.ru/*
  34. // @exclude      https://imgclick.ru/*
  35. // @exclude      https://imgdrive.net/*
  36. // @exclude      https://imgtaxi.com/*
  37. // @exclude      https://payforpic.ru/*
  38. // @exclude      https://piccash.net/*
  39. // @exclude      https://picclick.ru/*
  40. // @exclude      https://picforall.ru/*
  41. // @exclude      https://vfl.ru/*
  42. // @exclude      https://www.imagebam.com/*
  43. // @exclude      https://www.imagevenue.com/*
  44. // @exclude      https://www.turboimagehost.com/*
  45. // @grant        GM_addStyle
  46. // @grant        GM_xmlhttpRequest
  47. // @grant        GM.xmlHttpRequest
  48. // @grant        GM_setValue
  49. // @grant        GM.setValue
  50. // @grant        GM_getValue
  51. // @grant        GM.getValue
  52. // @grant        GM_registerMenuCommand
  53. // @grant        GM.registerMenuCommand
  54. // @grant        GM_openInTab
  55. // @grant        GM.openInTab
  56. // ==/UserScript==
  57.  
  58. ;(function () {
  59.   /* global Bliss */
  60.   // eslint-disable-next-line -- blissfuljs v1.0.6 Shy https://blissfuljs.com/
  61.   !function(){function e(o,i,t){return i=void 0===i?1:i,(t=t||i+1)-i<=1?function(){if(arguments.length<=i||"string"===c.type(arguments[i]))return o.apply(this,arguments);var t,e,n=arguments[i];for(e in n){var r=Array.prototype.slice.call(arguments);r.splice(i,1,e,n[e]),t=o.apply(this,r);}return t}:e(e(o,i+1,t),i,t-1)}function s(e,n,t){var r=a(t);if("string"===r){var o=Object.getOwnPropertyDescriptor(n,t);!o||o.writable&&o.configurable&&o.enumerable&&!o.get&&!o.set?e[t]=n[t]:(delete e[t],Object.defineProperty(e,t,o));}else if("array"===r)t.forEach(function(t){t in n&&s(e,n,t);});else for(var i in n)t&&("regexp"===r&&!t.test(i)||"function"===r&&!t.call(n,i))||s(e,n,i);return e}function a(t){if(null===t)return "null";if(void 0===t)return "undefined";var e=(Object.prototype.toString.call(t).match(/^\[object\s+(.*?)\]$/)[1]||"").toLowerCase();return "number"==e&&isNaN(t)?"nan":e}var c=self.Bliss=s(function(t,e){return 2==arguments.length&&!e||!t?null:"string"===c.type(t)?(e||document).querySelector(t):t||null},self.Bliss);s(c,{extend:s,overload:e,type:a,property:c.property||"_",listeners:new(self.WeakMap?WeakMap:Map),original:{addEventListener:(self.EventTarget||Node).prototype.addEventListener,removeEventListener:(self.EventTarget||Node).prototype.removeEventListener},sources:{},noop:function(){},$:function(t,e){return t instanceof Node||t instanceof Window?[t]:2!=arguments.length||e?Array.prototype.slice.call("string"==typeof t?(e||document).querySelectorAll(t):t||[]):[]},defined:function(){for(var t=0;t<arguments.length;t++)if(void 0!==arguments[t])return arguments[t]},create:function(t,e){return t instanceof Node?c.set(t,e):(1===arguments.length&&(e="string"===c.type(t)?{}:(t=(e=t).tag,c.extend({},e,function(t){return "tag"!==t}))),c.set(document.createElement(t||"div"),e))},each:function(t,e,n){for(var r in n=n||{},t)n[r]=e.call(t,r,t[r]);return n},ready:function(e,t,n){if("function"!=typeof e||t||(t=e,e=void 0),e=e||document,t&&("loading"!==e.readyState?t():c.once(e,"DOMContentLoaded",function(){t();})),!n)return new Promise(function(t){c.ready(e,t,!0);})},Class:function(t){var e,n,r=["constructor","extends","abstract","static"].concat(Object.keys(c.classProps)),o=t.hasOwnProperty("constructor")?t.constructor:c.noop;2==arguments.length?(n=arguments[0],t=arguments[1]):((n=function(){if(this.constructor.__abstract&&this.constructor===n)throw new Error("Abstract classes cannot be directly instantiated.");n.super&&!e&&n.super.apply(this,arguments),o.apply(this,arguments);}).super=t.extends||null,!n.super||(e=0===(n.super+"").indexOf("class "))&&console.error(`You are using $.Class() to create a fake function-based class that extends a native JS class. 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this?this[t]=e:this.setAttribute(t,e);},0),transition:function(o,i){return new Promise(function(t,e){var n,r;"transition"in this.style&&0!==i?(n=c.extend({},this.style,/^transition(Duration|Property)$/),c.style(this,{transitionDuration:(i||400)+"ms",transitionProperty:Object.keys(o).join(", ")}),c.once(this,"transitionend",function(){clearTimeout(r),c.style(this,n),t(this);}),r=setTimeout(t,i+50,this),c.style(this,o)):(c.style(this,o),t(this));}.bind(this))},fire:function(t,e){var n=document.createEvent("HTMLEvents");return n.initEvent(t,!0,!0),this.dispatchEvent(c.extend(n,e))},bind:e(function(t,n){var e;1<arguments.length&&("function"===c.type(n)||n.handleEvent)&&(e=n,(n="object"===c.type(arguments[2])?arguments[2]:{capture:!!arguments[2]}).callback=e);var r=c.listeners.get(this)||{};t.trim().split(/\s+/).forEach(function(t){var e;-1<t.indexOf(".")&&(e=(t=t.split("."))[1],t=t[0]),r[t]=r[t]||[],0===r[t].filter(function(t){return 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this.subject&&c.defined(n.apply(this.subject,arguments),this.subject)}),!o.array||r in c.Array.prototype&&t||(c.Array.prototype[r]=function(){var e=arguments;return this.subject.map(function(t){return t&&c.defined(n.apply(t,e),t)})}),o.$&&(c.sources[r]=c[r]=n,(o.array||o.element)&&(c[r]=function(){var t=[].slice.apply(arguments),e=t.shift(),n=o.array&&Array.isArray(e)?"Array":"Element";return c[n].prototype[r].apply({subject:e},t)})));},0),c.add(c.Array.prototype,{element:!1}),c.add(c.Element.prototype),c.add(c.setProps),c.add(c.classProps,{element:!1,array:!1});var n=document.createElement("_");c.add(c.extend({},HTMLElement.prototype,function(t){return "function"===c.type(n[t])}),null,!0);}();
  62.   // eslint-disable-next-line
  63.   const $ = Bliss;
  64.   // eslint-disable-next-line
  65.   const $$ = Bliss.$;
  66.  
  67.   const GM_METHOD_MAP = {
  68.     GM_addStyle: 'addStyle',
  69.     GM_deleteValue: 'deleteValue',
  70.     GM_getResourceURL: 'getResourceUrl',
  71.     GM_getValue: 'getValue',
  72.     GM_listValues: 'listValues',
  73.     GM_notification: 'notification',
  74.     GM_openInTab: 'openInTab',
  75.     GM_registerMenuCommand: 'registerMenuCommand',
  76.     GM_setClipboard: 'setClipboard',
  77.     GM_setValue: 'setValue',
  78.     GM_xmlhttpRequest: 'xmlHttpRequest',
  79.     GM_getResourceText: 'getResourceText',
  80.   }
  81.  
  82.   function getGM4PolyfilledMethod(methodName) {
  83.     const gm4MethodName = GM_METHOD_MAP[methodName]
  84.  
  85.     if (GM !== undefined && gm4MethodName in GM) {
  86.       return GM[gm4MethodName]
  87.     } else if (methodName in window) {
  88.       return function (...arguments_) {
  89.         return new Promise((resolve, reject) => {
  90.           try {
  91.             // eslint-disable-next-line unicorn/no-null
  92.             resolve(window[methodName].apply(null, arguments_))
  93.           } catch (error) {
  94.             reject(error)
  95.           }
  96.         })
  97.       }
  98.     }
  99.  
  100.     return async function () {
  101.       throw new Error(`Method ${methodName} is not available. Missing @grant?`)
  102.     }
  103.   }
  104.  
  105.   let addStyle = (css) => {
  106.     addStyle =
  107.       'GM_addStyle' in window
  108.         ? GM_addStyle // eslint-disable-line camelcase
  109.         : (css) => {
  110.             const head = document.querySelectorAll('head')[0]
  111.             const style = document.createElement('style')
  112.  
  113.             style.innerHTML = css
  114.             head.append(style)
  115.  
  116.             return style
  117.           }
  118.  
  119.     return addStyle(css)
  120.   }
  121.  
  122.   let request = (details) => {
  123.     request = getGM4PolyfilledMethod('GM_xmlhttpRequest')
  124.  
  125.     return request(details)
  126.   }
  127.  
  128.   const store = {
  129.     getValue: (name, defaultValue) => {
  130.       store.getValue = getGM4PolyfilledMethod('GM_getValue')
  131.  
  132.       return store.getValue(name, defaultValue)
  133.     },
  134.  
  135.     setValue: (name, value) => {
  136.       store.setValue = getGM4PolyfilledMethod('GM_setValue')
  137.  
  138.       return store.setValue(name, value)
  139.     },
  140.  
  141.     async patch(name, value) {
  142.       const oldValue = await store.getValue(name)
  143.  
  144.       store.setValue(name, {
  145.         ...oldValue,
  146.         ...value,
  147.       })
  148.     },
  149.   }
  150.  
  151.   let registerMenuCommand = (name, onClick, accessKey) => {
  152.     registerMenuCommand = getGM4PolyfilledMethod('GM_registerMenuCommand')
  153.  
  154.     return registerMenuCommand(name, onClick, accessKey)
  155.   }
  156.  
  157.   let openInTab = (url, openInBackground) => {
  158.     openInTab = getGM4PolyfilledMethod('GM_openInTab')
  159.  
  160.     return openInTab(url, openInBackground)
  161.   }
  162.  
  163.   const imgbum = {
  164.     id: 'imgbum',
  165.     name: 'imgbum.ru',
  166.     linkRegExp: /\/imgbum\.(net|ru)/,
  167.  
  168.     async getURL(link) {
  169.       return link.thumbnailURL.replace('-thumb', '')
  170.     },
  171.   }
  172.  
  173.   const adultImages = {
  174.     id: 'adult-images',
  175.     name: 'Adult-Images.ru',
  176.     linkRegExp: /\/(adult-images|money-pic)\.ru/,
  177.  
  178.     getURL: imgbum.getURL,
  179.   }
  180.  
  181.   async function getURLFromPage(link, extractor, requestDetails) {
  182.     const html = await getPageHtml({ url: link.url, ...requestDetails })
  183.  
  184.     const match = extractor.imageURLRegExp?.exec(html)
  185.  
  186.     let url
  187.  
  188.     if (match) {
  189.       url = match.groups ? match.groups.url : match[1]
  190.     }
  191.  
  192.     if (!url) {
  193.       console.error(
  194.         `[image-viewer] Failed to get URL from page source: ${link.url}`
  195.       )
  196.     }
  197.  
  198.     return url
  199.   }
  200.  
  201.   async function getPageHtml(requestDetails) {
  202.     const response = await request(requestDetails)
  203.  
  204.     return response.responseText
  205.   }
  206.  
  207.   const fastpic = {
  208.     id: 'fastpic',
  209.     name: 'FastPic',
  210.     linkRegExp: /fastpic\.(?:ru|org)\/view/,
  211.     imageURLRegExp: /src="(?<url>http[^"]+)" class="image img-fluid"/,
  212.     getURL: getURLFromPage,
  213.   }
  214.  
  215.   const URL_PARTS_REGEXP = /i(\d+).+\.(ru|org)\/big(\/\d+\/\d+\/).+\/([^/]+)$/
  216.  
  217.   const fastpicDirect = {
  218.     id: 'fastpicDirect',
  219.     name: 'FastPic (direct link)',
  220.     linkRegExp: /fastpic\.(?:ru|org)\/big/,
  221.  
  222.     async getURL(link) {
  223.       const [, index, domain, date, filename] =
  224.         URL_PARTS_REGEXP.exec(link.url) || []
  225.  
  226.       const url = `https://fastpic.${domain}/view/${index}${date}${filename}.html`
  227.  
  228.       return fastpic.getURL({ ...link, url }, fastpic)
  229.     },
  230.   }
  231.  
  232.   const imagebam = {
  233.     id: 'imagebam',
  234.     name: 'ImageBam',
  235.     linkRegExp: /www\.imagebam\.com\//,
  236.     imageURLRegExp: /src="(?<url>[^"]+)".+class="main-image/,
  237.  
  238.     async getURL(link, extractor) {
  239.       return getURLFromPage(link, extractor, {
  240.         cookie: 'nsfw_inter=1',
  241.       })
  242.     },
  243.   }
  244.  
  245.   const DATE_PATTERN = /(\d{4})\.(\d{2})\.(\d{2})/
  246.  
  247.   const imageban = {
  248.     id: 'imageban',
  249.     name: 'ImageBan.ru',
  250.     linkRegExp: /imageban\.ru\/show/,
  251.  
  252.     async getURL(link) {
  253.       return link.thumbnailURL
  254.         .replace('thumbs', 'out')
  255.         .replace(DATE_PATTERN, '$1/$2/$3')
  256.     },
  257.   }
  258.  
  259.   const imagebanDirect = {
  260.     id: 'imagebanDirect',
  261.     name: 'ImageBan.ru (direct link)',
  262.     linkRegExp: /imageban\.ru\/out/,
  263.  
  264.     async getURL(link) {
  265.       return link.url
  266.     },
  267.   }
  268.  
  269.   const imagetwist = {
  270.     id: 'imagetwist',
  271.     name: 'ImageTwist',
  272.     linkRegExp: /imagetwist\.com/,
  273.     viewMode: 'origin-download',
  274.  
  275.     async getURL(link) {
  276.       const imageName = link.url.split('/').pop()?.replace('.html', '')
  277.       const imageExtension = imageName?.split('.').pop() ?? ''
  278.  
  279.       const thumbnailExtension = link.thumbnailURL.split('.').pop() ?? ''
  280.       const imageUrl = link.thumbnailURL
  281.         .replace('/th/', '/i/')
  282.         .slice(0, -thumbnailExtension.length)
  283.  
  284.       return `${imageUrl}${imageExtension}/${imageName}`
  285.     },
  286.   }
  287.  
  288.   const HOST_REPLACE_REG_EXP = /(picturelol|picshick|imageshimage)/
  289.  
  290.   const imagetwistBased = {
  291.     id: 'imagetwistBased',
  292.     name: 'ImageTwist based (legacy)',
  293.     hosts: ['Picturelol.com', 'PicShick.com', 'Imageshimage.com'],
  294.     linkRegExp: /(picturelol|picshick|imageshimage)\.com/,
  295.     viewMode: 'origin-download',
  296.  
  297.     async getURL(link) {
  298.       const imageName = link.url.split('/').pop()
  299.       const imageUrl = link.thumbnailURL
  300.         .replace('/th/', '/i/')
  301.         .replace(HOST_REPLACE_REG_EXP, 'imagetwist')
  302.  
  303.       return `${imageUrl}/${imageName}`
  304.     },
  305.   }
  306.  
  307.   const imagevenue = {
  308.     id: 'imagevenue,',
  309.     name: 'ImageVenue.com',
  310.     linkRegExp: /imagevenue\.com\//,
  311.     imageURLRegExp: /data-toggle="full">\W*<img src="(?<url>[^"]*)/im,
  312.     getURL: getURLFromPage,
  313.   }
  314.  
  315.   const imgadult = {
  316.     id: 'imgadult',
  317.     name: 'ImgAdult',
  318.     linkRegExp: /\/imgadult\.com/,
  319.  
  320.     async getURL(link) {
  321.       return link.thumbnailURL.replace('/small/', '/big/')
  322.     },
  323.   }
  324.  
  325.   const imgbb = {
  326.     id: 'imgbb',
  327.     name: 'ImgBB',
  328.     linkRegExp: /\/ibb\.co/,
  329.     imageURLRegExp: /rel="image_src" href="(?<url>http[^"]+)"/,
  330.  
  331.     async getURL(link) {
  332.       if (link.thumbnailURL.includes('//thumb')) {
  333.         return link.thumbnailURL.replace('//thumb', '//image')
  334.       }
  335.  
  336.       return getURLFromPage(link, imgbb)
  337.     },
  338.   }
  339.  
  340.   const imgbox = {
  341.     id: 'imgbox',
  342.     name: 'imgbox',
  343.     linkRegExp: /\/imgbox\.com/,
  344.  
  345.     async getURL(link) {
  346.       return link.thumbnailURL.replace('/thumbs', '/images').replace('_t', '_o')
  347.     },
  348.   }
  349.  
  350.   const imgdrive = {
  351.     id: 'imgdrive',
  352.     name: 'ImgDrive.net',
  353.     linkRegExp: /\/imgdrive\.net/,
  354.     viewMode: 'origin-download',
  355.  
  356.     async getURL(link) {
  357.       return link.thumbnailURL
  358.         .replace('/small/', '/big/')
  359.         .replace('/small-medium/', '/big/')
  360.     },
  361.   }
  362.  
  363.   const imgtaxi = {
  364.     id: 'imgtaxi',
  365.     name: 'ImgTaxi.com',
  366.     linkRegExp: /\/imgtaxi\.com/,
  367.     viewMode: 'origin-download',
  368.     getURL: imgdrive.getURL,
  369.   }
  370.  
  371.   const piccash = {
  372.     id: 'piccash',
  373.     name: 'PicCash',
  374.     linkRegExp: /\/piccash\.net/,
  375.  
  376.     async getURL(link) {
  377.       return link.thumbnailURL.replace('_thumb', '_full').replace('-thumb', '')
  378.     },
  379.   }
  380.  
  381.   const picforall = {
  382.     id: 'picforall',
  383.     name: 'PicForAll',
  384.     hosts: [
  385.       'freescreens.ru',
  386.       'imgclick.ru',
  387.       'picclick.ru',
  388.       'payforpic.ru',
  389.       'picforall.ru',
  390.       'imgbase.ru',
  391.     ],
  392.     linkRegExp:
  393.       /\/(freescreens|imgclick|picclick|payforpic|picforall|imgbase)\.ru/,
  394.     getURL: imgbum.getURL,
  395.   }
  396.  
  397.   const turboimagehost = {
  398.     id: 'turboimagehost',
  399.     name: 'TurboImageHost.com',
  400.     linkRegExp: /turboimagehost\.com\/p/,
  401.     imageURLRegExp: /rel="image_src" href="(?<url>http[^"]+)"/,
  402.     viewMode: 'new-tab',
  403.     getURL: getURLFromPage,
  404.   }
  405.  
  406.   const REMOVE_SUFFIX_REGEXP = /_.?(.+)$/
  407.  
  408.   const vfl = {
  409.     id: 'vfl',
  410.     name: 'VFL.Ru',
  411.     linkRegExp: /^http:\/\/vfl\.ru/,
  412.  
  413.     async getURL(link) {
  414.       return link.thumbnailURL.replace(REMOVE_SUFFIX_REGEXP, '$1')
  415.     },
  416.   }
  417.  
  418.   const hostExtractors = /* #__PURE__ */ Object.freeze({
  419.     __proto__: null,
  420.     adultImages,
  421.     fastpic,
  422.     fastpicDirect,
  423.     imagebam,
  424.     imageban,
  425.     imagebanDirect,
  426.     imagetwist,
  427.     imagetwistBased,
  428.     imagevenue,
  429.     imgadult,
  430.     imgbb,
  431.     imgbox,
  432.     imgbum,
  433.     imgdrive,
  434.     imgtaxi,
  435.     piccash,
  436.     picforall,
  437.     turboimagehost,
  438.     vfl,
  439.   })
  440.  
  441.   let extractorsActive = []
  442.  
  443.   const extractors = Object.values(hostExtractors).filter(Boolean)
  444.  
  445.   const extractorsByID = extractors.reduce((result, extractor) => {
  446.     result[extractor.id] = extractor
  447.  
  448.     return result
  449.   }, {})
  450.  
  451.   const urlExtractor = {
  452.     getImageHostsMetadata() {
  453.       const result = extractors.map(({ id, name, hosts }) => ({
  454.         id,
  455.         name,
  456.         description: hosts ? hosts.join(', ') : '',
  457.       }))
  458.  
  459.       return sortCaseInsensitive(result, ({ name }) => name)
  460.     },
  461.  
  462.     async getImageURL(link) {
  463.       const extractor = extractorsByID[link.host]
  464.  
  465.       const imageURL = await extractor.getURL(link, extractor)
  466.  
  467.       if (!imageURL) {
  468.         console.error(
  469.           `[image-viewer] Failed to get URL for ${link.host}:${link.url}`
  470.         )
  471.       }
  472.  
  473.       return imageURL
  474.     },
  475.  
  476.     getExtractorByHost(hostId) {
  477.       return extractorsByID[hostId]
  478.     },
  479.  
  480.     getHostExtractorMatcher(enabledHosts) {
  481.       extractorsActive = extractors.filter((extractor) =>
  482.         enabledHosts.includes(extractor.id)
  483.       )
  484.  
  485.       let previousExtractor
  486.  
  487.       return (url) => {
  488.         if (previousExtractor && previousExtractor.linkRegExp.test(url)) {
  489.           return previousExtractor
  490.         }
  491.  
  492.         const extractor = extractorsActive.find((extractor) =>
  493.           extractor.linkRegExp.test(url)
  494.         )
  495.  
  496.         if (extractor) {
  497.           previousExtractor = extractor
  498.  
  499.           return extractor
  500.         }
  501.       }
  502.     },
  503.   }
  504.  
  505.   function sortCaseInsensitive(items, getValue) {
  506.     return items
  507.       .map((value, index) => ({ index, value: getValue(value).toLowerCase() }))
  508.       .sort((a, b) => {
  509.         if (a.value > b.value) {
  510.           return 1
  511.         }
  512.         if (a.value < b.value) {
  513.           return -1
  514.         }
  515.  
  516.         return 0
  517.       })
  518.       .map((m) => items[m.index])
  519.   }
  520.  
  521.   const CLASSES$1 = {
  522.     open: 'iv-config-form--open',
  523.   }
  524.  
  525.   let configMenu
  526.   const currentHost = unsafeWindow.location.host
  527.  
  528.   async function initHostConfig() {
  529.     const config = await getHostConfig()
  530.  
  531.     await registerMenuCommand('Settings', () => showMenu(config))
  532.  
  533.     return config
  534.   }
  535.  
  536.   async function getHostConfig() {
  537.     const hosts = urlExtractor.getImageHostsMetadata()
  538.  
  539.     const storedConfig = await store.getValue(currentHost, { hosts: {} })
  540.     const enabledHosts = []
  541.  
  542.     for (const host of hosts) {
  543.       const id = host.id
  544.       const isEnabled = id in storedConfig.hosts ? storedConfig.hosts[id] : true
  545.  
  546.       host.isEnabled = isEnabled
  547.       storedConfig.hosts[id] = isEnabled
  548.  
  549.       if (isEnabled) {
  550.         enabledHosts.push(id)
  551.       }
  552.     }
  553.  
  554.     storedConfig.hosts = hosts.reduce((result, host) => {
  555.       result[host.id] = host.isEnabled
  556.  
  557.       return result
  558.     }, {})
  559.  
  560.     return {
  561.       hosts,
  562.       storedConfig,
  563.       enabledHosts,
  564.     }
  565.   }
  566.  
  567.   function showMenu(config) {
  568.     createMenuElement(config).classList.add(CLASSES$1.open)
  569.   }
  570.  
  571.   function createMenuElement(config) {
  572.     if (configMenu) {
  573.       return configMenu
  574.     }
  575.  
  576.     const rows = config.hosts.map((host) => createConfigMenuRow(host))
  577.  
  578.     configMenu = $.create('div', {
  579.       id: 'iv-config-form',
  580.       className: 'iv-config-form',
  581.       contents: [
  582.         createMenuHeader(),
  583.         {
  584.           tag: 'div',
  585.           className: 'iv-config-form__options',
  586.           contents: rows,
  587.         },
  588.       ],
  589.       delegate: {
  590.         change: {
  591.           '.js-iv-config-checkbox': ({ target: { value, checked } }) =>
  592.             updateHostConfig(config.storedConfig, value, checked),
  593.         },
  594.       },
  595.     })
  596.  
  597.     document.body.append(configMenu)
  598.  
  599.     return configMenu
  600.   }
  601.  
  602.   function createConfigMenuRow(host) {
  603.     return $.create('label', {
  604.       className: 'iv-config-form__label',
  605.       title: host.description,
  606.       contents: [
  607.         {
  608.           tag: 'input',
  609.           type: 'checkbox',
  610.           className: 'iv-config-form__checkbox js-iv-config-checkbox',
  611.           checked: host.isEnabled,
  612.           value: host.id,
  613.         },
  614.         host.name,
  615.       ],
  616.     })
  617.   }
  618.  
  619.   function createMenuHeader() {
  620.     const closeButton = $.create('a', {
  621.       href: '#',
  622.       title: 'Close',
  623.       className: `iv-icon-button iv-icon-button--small iv-icon iv-icon--type-close`,
  624.       events: {
  625.         click: (event) => {
  626.           event.preventDefault()
  627.           configMenu.classList.remove(CLASSES$1.open)
  628.         },
  629.       },
  630.     })
  631.  
  632.     return {
  633.       tag: 'div',
  634.       className: 'iv-config-form__header',
  635.       contents: [
  636.         {
  637.           tag: 'span',
  638.           className: 'iv-config-form__header-title',
  639.           contents: `Settings for ${currentHost}`,
  640.         },
  641.         closeButton,
  642.       ],
  643.     }
  644.   }
  645.  
  646.   function updateHostConfig(config, hostName, isEnabled) {
  647.     config.hosts[hostName] = isEnabled
  648.     store.setValue(currentHost, config)
  649.   }
  650.  
  651.   const css_248z =
  652.     ":root{--color-bkg-button-hover:#ffffff1a;--color-bkg-view:#000c;--transition-duration:350ms;--color-text:#fff;--color-border:#0003}@keyframes spin{0%{transform:translate(-50%,-50%) rotate(0deg)}to{transform:translate(-50%,-50%) rotate(1turn)}}.iv-icon{position:relative}.iv-icon:after,.iv-image-link img:after{background-position:50%;background-repeat:no-repeat;background-size:contain;content:\"\";height:100%;left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);width:100%;z-index:2}.iv-icon--hover:after{opacity:0;transition:opacity .35s ease}.iv-icon--hover:hover:after{opacity:1}.iv-icon--size-button:after{height:50px;width:50px}.iv-icon--type-loading:after{animation:spin 1s linear infinite;background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='%23fff'%3E%3Cpath d='M12 4V2A10 10 0 0 0 2 12h2a8 8 0 0 1 8-8Z'/%3E%3C/svg%3E\")!important;opacity:1}.iv-icon--type-zoom:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M15.5 14h-.79l-.28-.27A6.471 6.471 0 0 0 16 9.5 6.5 6.5 0 1 0 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14zm.5-7H9v2H7v1h2v2h1v-2h2V9h-2z'/%3E%3C/svg%3E\")}.iv-icon--type-open-in-new:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0z' fill='none'/%3E%3Cpath d='M19 19H5V5h7V3H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14c1.1 0 2-.9 2-2v-7h-2v7zM14 3v2h3.59l-9.83 9.83 1.41 1.41L19 6.41V10h2V3h-7z'/%3E%3C/svg%3E\");height:40px;width:40px}.iv-icon--type-next:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M10.02 6 8.61 7.41 13.19 12l-4.58 4.59L10.02 18l6-6-6-6z'/%3E%3C/svg%3E\")}.iv-icon--type-previous:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M15.61 7.41 14.2 6l-6 6 6 6 1.41-1.41L11.03 12l4.58-4.59z'/%3E%3C/svg%3E\")}.iv-icon--type-close:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M19 6.41 17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z'/%3E%3C/svg%3E\")}.iv-icon--type-expand:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M7 14H5v5h5v-2H7v-3zm-2-4h2V7h3V5H5v5zm12 7h-3v2h5v-5h-2v3zM14 5v2h3v3h2V5h-5z'/%3E%3C/svg%3E\")}.iv-icon--type-shrink:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M5 16h3v3h2v-5H5v2zm3-8H5v2h5V5H8v3zm6 11h2v-3h3v-2h-5v5zm2-11V5h-2v5h5V8h-3z'/%3E%3C/svg%3E\")}.iv-icon--type-image-broken:after,.iv-image-link img:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='%23fff'%3E%3Cpath d='M21 5v6.59l-3-3.01-4 4.01-4-4-4 4-3-3.01V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2m-3 6.42 3 3.01V19a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-6.58l3 2.99 4-4 4 4'/%3E%3C/svg%3E\")}.iv-image-link{border:1px solid #0003;box-shadow:1px 1px 3px #00000080;display:inline-flex;margin:3px;min-height:50px;min-width:50px;padding:4px;vertical-align:top}.iv-image-link img{margin:0}.iv-image-link>:not(img){align-items:center;display:flex;justify-content:center;width:100%}.iv-image-link:before{background-color:#00000080;bottom:4px;content:\"\";left:4px;opacity:0;position:absolute;right:4px;top:4px;transition:opacity .35s ease;z-index:1}.iv-image-link.iv-icon--type-loading:before,.iv-image-link:hover:before{opacity:1}.iv-image-link img:after,.iv-image-link img:before{content:\"\";position:absolute}.iv-image-link img:before{background-color:#0003;height:100%;left:0;top:0;width:100%}.iv-image-link img:after{height:35px;width:35px;z-index:0}.iv-image-view{background-color:#000c;color:#fff;display:none;flex-direction:column;height:0;opacity:0;transition:opacity .35s ease-out;user-select:none}.iv-image-view--open body,html.iv-image-view--open{overflow:hidden}.iv-image-view--open .iv-image-view{bottom:0;display:flex;height:auto;left:0;opacity:1;position:fixed;right:0;top:0;z-index:3}.iv-image-view--single .single-hide{visibility:hidden}.iv-image-view__footer,.iv-image-view__header{background-color:#000c;display:flex}.iv-image-view__footer-wrapper,.iv-image-view__header-wrapper{z-index:2}.iv-image-view__header-wrapper{box-shadow:0 3px 7px #000000b3}.iv-image-view__footer-wrapper{box-shadow:0 -3px 7px #000000b3}.iv-image-view__header{justify-content:space-between}.iv-image-view__footer{justify-content:center}.iv-image-view__body{display:flex;height:100%;overflow:auto;position:relative}.iv-image-view__body::-webkit-scrollbar{width:20px}.iv-image-view__body::-webkit-scrollbar-thumb{background-color:#000c}.iv-image-view__body::-webkit-scrollbar-track{background-color:#fffc}.iv-thumbnail-wrapper{display:flex;height:100%;left:0;position:absolute;top:0;width:100%;z-index:0}.iv-image-view__number{align-items:center;display:flex;font-size:18px;padding:0 40px}.iv-image-view__backdrop{height:100%;left:0;position:fixed;top:0;width:100%;z-index:1}.iv-image,.iv-thumbnail{margin:auto;max-height:100%;max-width:100%;object-fit:contain}.iv-image{opacity:1;transition:opacity .35s ease-out;z-index:2}.iv-thumbnail{filter:blur(5px)}.iv-icon--type-error .iv-image,.iv-image-view__image--loading .iv-image,.iv-image-view__image--thumbnail .iv-image{opacity:0}.iv-image-view__image--thumbnail .iv-thumbnail-wrapper{z-index:2}.iv-image-view--full-height .iv-image,.iv-image-view--full-height .iv-thumbnail{cursor:grab;max-height:none}.iv-image-view--full-height .iv-image--grabbing{cursor:grabbing}.iv-icon-button{height:50px;transition:all .35s ease-out;width:50px}.iv-icon-button--small{height:25px;width:25px}.iv-icon-button+.iv-icon-button{margin-left:5px}.iv-icon-button:hover{background-color:#ffffff1a}.iv-icon-button--active,.iv-icon-button:active{background-color:#fff3}.iv-config-form{background-color:#000000d9;color:#fff;display:none;flex-direction:column;height:50%;left:10px;max-width:500px;padding:10px;top:10px;width:50%}.iv-config-form--open{display:flex;position:fixed;z-index:3}.iv-config-form__header{align-items:center;display:flex;padding:10px}.iv-config-form__header-title{flex-grow:1}.iv-config-form__options{display:flex;flex-flow:column wrap;flex-grow:1;overflow:auto}.iv-config-form__label{align-items:center;display:flex;flex:0 0 auto;margin:0;padding:10px;transition:all .35s ease-out}.iv-config-form__label:hover{background-color:#ffffff26}.iv-config-form__checkbox{margin:0 5px 0 0!important}"
  653.  
  654.   const CLASSES = {
  655.     imageLink: 'js-image-link',
  656.     imageLinkOpenInNew: 'js-image-link-open-in-new',
  657.     zoomIcon: 'iv-icon--type-zoom',
  658.     openInNewIcon: 'iv-icon--type-open-in-new',
  659.     imageLinkHover: 'iv-icon--hover',
  660.     brokenImageIcon: 'iv-icon--type-image-broken',
  661.     loadingIcon: 'iv-icon--type-loading',
  662.     loading: 'iv-image-view__image--loading',
  663.     thumbnail: 'iv-image-view__image--thumbnail',
  664.     open: 'iv-image-view--open',
  665.     single: 'iv-image-view--single',
  666.     fullHeight: 'iv-image-view--full-height',
  667.     iconExpand: 'iv-icon--type-expand',
  668.     iconShrink: 'iv-icon--type-shrink',
  669.     grabbing: 'iv-image--grabbing',
  670.     buttonActive: 'iv-icon-button--active',
  671.   }
  672.  
  673.   const SELECTORS = {
  674.     imageLink: `.${CLASSES.imageLink}`,
  675.     imageOpenInNewLink: `.${CLASSES.imageLinkOpenInNew}`,
  676.   }
  677.  
  678.   const EMPTY_SRC =
  679.     'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEAAAAALAAAAAABAAEAAAI='
  680.  
  681.   const TRANSITION_DURATION = 350
  682.  
  683.   function initViewer(enabledHosts) {
  684.     addStyle(css_248z)
  685.  
  686.     const container = $('body')
  687.  
  688.     const linkCommonClasses = [
  689.       'iv-image-link',
  690.       'iv-icon',
  691.       'iv-icon--hover',
  692.       'iv-icon--size-button',
  693.     ]
  694.  
  695.     const getExtractor = urlExtractor.getHostExtractorMatcher(enabledHosts)
  696.  
  697.     const imagesWithLinks = $$('a > img, a > var', container)
  698.       .map((img) => ({
  699.         link: img.parentElement,
  700.         thumbnailUrl: img.src ?? img.title,
  701.       }))
  702.       .filter(({ link }) => link.href)
  703.  
  704.     for (const { link, thumbnailUrl } of imagesWithLinks) {
  705.       const extractor = getExtractor(link.href)
  706.  
  707.       if (!extractor) {
  708.         continue
  709.       }
  710.  
  711.       link.dataset.ivHost = extractor.id
  712.       link.dataset.ivThumbnail = thumbnailUrl
  713.  
  714.       let viewModeClasses
  715.  
  716.       if (extractor.viewMode === 'new-tab') {
  717.         viewModeClasses = [CLASSES.imageLinkOpenInNew, CLASSES.openInNewIcon]
  718.         link.setAttribute('title', 'Open in new tab')
  719.       } else {
  720.         viewModeClasses = [CLASSES.imageLink, CLASSES.zoomIcon]
  721.         link.setAttribute('title', 'Open viewer')
  722.       }
  723.  
  724.       link.classList.add(...linkCommonClasses, ...viewModeClasses)
  725.     }
  726.  
  727.     $.delegate(container, 'click', {
  728.       [SELECTORS.imageLink]: events.openViewerLinkClick,
  729.       [SELECTORS.imageOpenInNewLink]: events.openInTabLinkClick,
  730.     })
  731.   }
  732.  
  733.   const elements = {
  734.     container: undefined,
  735.     image: undefined,
  736.     imageThumbnail: undefined,
  737.     imageContainer: undefined,
  738.     imageNumber: undefined,
  739.     imageTotal: undefined,
  740.     buttons: {
  741.       next: undefined,
  742.       previous: undefined,
  743.       close: undefined,
  744.       toggleFullHeight: undefined,
  745.     },
  746.   }
  747.  
  748.   const state = {
  749.     isFirstClick: true,
  750.     isOpened: false,
  751.     currentLink: undefined,
  752.     linksSet: [],
  753.     isSingle: false,
  754.     getCurrentLinkIndex() {
  755.       return this.currentLink === undefined
  756.         ? -1
  757.         : this.linksSet.indexOf(this.currentLink)
  758.     },
  759.     getLastLinkIndex() {
  760.       return this.linksSet.length - 1
  761.     },
  762.     dragPosition: 0,
  763.     dragging: false,
  764.   }
  765.  
  766.   const image = {
  767.     async getFullSizeURL(link) {
  768.       let imageURL = link.dataset.ivImgUrl
  769.  
  770.       if (imageURL) {
  771.         return imageURL
  772.       }
  773.  
  774.       const thumbnailURL = link.dataset.ivThumbnail
  775.       const imageHost = link.dataset.ivHost
  776.  
  777.       if (!thumbnailURL || !imageHost) {
  778.         throw new Error(
  779.           '[image-viewer] Either thumbnail URL or host is not set'
  780.         )
  781.       }
  782.  
  783.       imageURL = await urlExtractor.getImageURL({
  784.         url: link.href,
  785.         thumbnailURL,
  786.         host: imageHost,
  787.       })
  788.  
  789.       if (!imageURL) {
  790.         image.markAsBroken(link)
  791.  
  792.         return
  793.       }
  794.  
  795.       link.dataset.ivImgUrl = imageURL
  796.  
  797.       return imageURL
  798.     },
  799.  
  800.     async showInViewer(link) {
  801.       const {
  802.         container,
  803.         image: img,
  804.         imageThumbnail: thumbnail,
  805.         imageNumber,
  806.       } = elements
  807.  
  808.       state.currentLink = link
  809.  
  810.       if (state.isSingle) {
  811.         container.classList.add(CLASSES.single)
  812.       } else {
  813.         container.classList.remove(CLASSES.single)
  814.         imageNumber.textContent = (state.getCurrentLinkIndex() + 1).toString()
  815.       }
  816.  
  817.       if (!state.isOpened) {
  818.         document.documentElement.classList.add(CLASSES.open)
  819.         state.isOpened = true
  820.       }
  821.  
  822.       img.src = EMPTY_SRC
  823.  
  824.       if (link.classList.contains(CLASSES.brokenImageIcon)) {
  825.         container.classList.add(CLASSES.brokenImageIcon)
  826.  
  827.         return
  828.       }
  829.  
  830.       container.classList.remove(CLASSES.brokenImageIcon)
  831.  
  832.       container.classList.add(CLASSES.loading, CLASSES.loadingIcon)
  833.  
  834.       const isSizeKnown = Boolean(link.dataset.ivWidth)
  835.       const thumbnailURL = link.dataset.ivThumbnail
  836.       const imageHost = link.dataset.ivHost
  837.  
  838.       if (!thumbnailURL || !imageHost) {
  839.         throw new Error(
  840.           '[image-viewer] Either thumbnail URL or host is not set'
  841.         )
  842.       }
  843.  
  844.       if (isSizeKnown) {
  845.         thumbnail.width = Number(link.dataset.ivWidth)
  846.         thumbnail.src = thumbnailURL
  847.  
  848.         container.classList.add(CLASSES.thumbnail)
  849.       }
  850.  
  851.       const imageURL = await image.getFullSizeURL(link)
  852.  
  853.       if (!imageURL) {
  854.         return
  855.       }
  856.  
  857.       try {
  858.         const extractor = urlExtractor.getExtractorByHost(imageHost)
  859.  
  860.         if (extractor.viewMode === 'origin-download') {
  861.           img.src = await image.loadAsBlob(imageURL)
  862.         } else {
  863.           await image.preload(
  864.             imageURL,
  865.             isSizeKnown ? undefined : image.setThumbnailSize
  866.           )
  867.  
  868.           img.src = imageURL
  869.         }
  870.  
  871.         container.classList.remove(
  872.           CLASSES.thumbnail,
  873.           CLASSES.loading,
  874.           CLASSES.loadingIcon
  875.         )
  876.  
  877.         setTimeout(image.hideThumbnail, TRANSITION_DURATION)
  878.       } catch {
  879.         link.classList.remove(CLASSES.imageLink)
  880.         image.markAsBroken(link)
  881.  
  882.         link.setAttribute('target', '_blank')
  883.       }
  884.     },
  885.  
  886.     preload(url, onSizeGet) {
  887.       return new Promise((resolve, reject) => {
  888.         const imageObject = new Image()
  889.  
  890.         imageObject.addEventListener('load', () => resolve())
  891.         imageObject.addEventListener('error', reject)
  892.  
  893.         imageObject.src = url
  894.  
  895.         if (onSizeGet) {
  896.           image.getSize(imageObject).then(onSizeGet)
  897.         }
  898.       })
  899.     },
  900.  
  901.     async loadAsBlob(url) {
  902.       const origin = new URL(url).origin
  903.  
  904.       const response = await request({
  905.         url,
  906.         headers: {
  907.           referer: origin,
  908.           origin,
  909.         },
  910.         responseType: 'blob',
  911.       })
  912.  
  913.       return URL.createObjectURL(response.response)
  914.     },
  915.  
  916.     getSize(img) {
  917.       return new Promise((resolve) => {
  918.         const intervalId = setInterval(() => {
  919.           if (img.naturalWidth) {
  920.             clearInterval(intervalId)
  921.             resolve({ width: img.naturalWidth, isLoaded: img.complete })
  922.           }
  923.         }, 10)
  924.       })
  925.     },
  926.  
  927.     setThumbnailSize({ width, isLoaded }) {
  928.       if (!state.currentLink) {
  929.         throw new Error('[image-viewer] currentLink is not set')
  930.       }
  931.  
  932.       const thumbnailURL = state.currentLink.dataset.ivThumbnail
  933.  
  934.       if (!thumbnailURL) {
  935.         throw new Error('[image-viewer] Thumbnail URL is not set')
  936.       }
  937.  
  938.       elements.imageThumbnail.width = width
  939.       elements.imageThumbnail.src = thumbnailURL
  940.  
  941.       if (!isLoaded) {
  942.         elements.container.classList.add(CLASSES.thumbnail)
  943.       }
  944.  
  945.       state.currentLink.dataset.ivWidth = width.toString()
  946.     },
  947.  
  948.     hideThumbnail() {
  949.       elements.imageThumbnail.removeAttribute('width')
  950.       elements.imageThumbnail.src = EMPTY_SRC
  951.     },
  952.  
  953.     hide() {
  954.       document.documentElement.classList.remove(CLASSES.open)
  955.       state.isOpened = false
  956.       state.currentLink = undefined
  957.       elements.image.src = EMPTY_SRC
  958.       events.keyboard.unbind()
  959.     },
  960.  
  961.     next() {
  962.       const currentIndex = state.getCurrentLinkIndex()
  963.       const newIndex =
  964.         currentIndex < state.getLastLinkIndex() ? currentIndex + 1 : 0
  965.  
  966.       image.showInViewer(state.linksSet[newIndex])
  967.     },
  968.  
  969.     previous() {
  970.       const currentIndex = state.getCurrentLinkIndex()
  971.       const newIndex =
  972.         currentIndex === 0 ? state.getLastLinkIndex() : currentIndex - 1
  973.  
  974.       image.showInViewer(state.linksSet[newIndex])
  975.     },
  976.  
  977.     toggleFullHeight() {
  978.       elements.container.classList.toggle(CLASSES.fullHeight)
  979.       elements.buttons.toggleFullHeight.classList.toggle(CLASSES.iconExpand)
  980.       elements.buttons.toggleFullHeight.classList.toggle(CLASSES.iconShrink)
  981.     },
  982.  
  983.     markAsBroken(link) {
  984.       elements.container.classList.replace(
  985.         CLASSES.loadingIcon,
  986.         CLASSES.brokenImageIcon
  987.       )
  988.       elements.container.classList.remove(CLASSES.loading)
  989.       link.classList.replace(CLASSES.zoomIcon, CLASSES.brokenImageIcon)
  990.       link.setAttribute('title', '')
  991.     },
  992.   }
  993.  
  994.   const events = {
  995.     openViewerLinkClick(event) {
  996.       event.preventDefault()
  997.  
  998.       if (state.isFirstClick) {
  999.         create.viewContainer()
  1000.         state.isFirstClick = false
  1001.       }
  1002.  
  1003.       const link = event.target
  1004.  
  1005.       state.linksSet = $$(SELECTORS.imageLink, link.parentElement ?? undefined)
  1006.       state.isSingle = state.linksSet.length === 1
  1007.  
  1008.       if (!state.isSingle) {
  1009.         elements.imageTotal.textContent = state.linksSet.length.toString()
  1010.       }
  1011.  
  1012.       events.keyboard.bind()
  1013.  
  1014.       image.showInViewer(link)
  1015.     },
  1016.  
  1017.     async openInTabLinkClick(event) {
  1018.       event.preventDefault()
  1019.  
  1020.       const link = event.target
  1021.  
  1022.       link.classList.replace(CLASSES.openInNewIcon, CLASSES.loadingIcon)
  1023.  
  1024.       const imageURL = await image.getFullSizeURL(event.target)
  1025.  
  1026.       link.classList.replace(CLASSES.loadingIcon, CLASSES.openInNewIcon)
  1027.  
  1028.       if (imageURL) {
  1029.         openInTab(imageURL, false)
  1030.       }
  1031.     },
  1032.  
  1033.     keyboard: {
  1034.       bind() {
  1035.         document.addEventListener('keydown', events.keyboard.handler, true)
  1036.       },
  1037.       unbind() {
  1038.         document.removeEventListener('keydown', events.keyboard.handler, true)
  1039.       },
  1040.  
  1041.       handler(event) {
  1042.         if (event.defaultPrevented || event.repeat) {
  1043.           return
  1044.         }
  1045.  
  1046.         switch (event.key) {
  1047.           case 'ArrowRight': {
  1048.             image.next()
  1049.             break
  1050.           }
  1051.  
  1052.           case 'ArrowLeft': {
  1053.             image.previous()
  1054.             break
  1055.           }
  1056.  
  1057.           case 'Escape': {
  1058.             image.hide()
  1059.             break
  1060.           }
  1061.  
  1062.           case ' ': {
  1063.             image.toggleFullHeight()
  1064.             break
  1065.           }
  1066.  
  1067.           default: {
  1068.             return
  1069.           }
  1070.         }
  1071.  
  1072.         event.preventDefault()
  1073.       },
  1074.     },
  1075.  
  1076.     mouse(event) {
  1077.       switch (event.type) {
  1078.         case 'mousedown': {
  1079.           state.dragging = true
  1080.           state.dragPosition = event.clientY
  1081.           elements.image.classList.add(CLASSES.grabbing)
  1082.           break
  1083.         }
  1084.  
  1085.         case 'mousemove': {
  1086.           if (state.dragging) {
  1087.             elements.imageContainer.scrollTop -=
  1088.               event.clientY - state.dragPosition
  1089.             state.dragPosition = event.clientY
  1090.           }
  1091.           break
  1092.         }
  1093.  
  1094.         case 'mouseup':
  1095.  
  1096.         // fall through
  1097.         case 'mouseout': {
  1098.           state.dragging = false
  1099.           elements.image.classList.remove(CLASSES.grabbing)
  1100.           break
  1101.         }
  1102.  
  1103.         case 'dblclick': {
  1104.           image.toggleFullHeight()
  1105.           break
  1106.         }
  1107.  
  1108.         default: {
  1109.           return
  1110.         }
  1111.       }
  1112.  
  1113.       event.preventDefault()
  1114.     },
  1115.   }
  1116.  
  1117.   const create = {
  1118.     viewContainer() {
  1119.       elements.container = $.create('div', {
  1120.         className: 'iv-image-view iv-icon iv-icon--size-button',
  1121.         contents: [
  1122.           create.viewContainerHeader(),
  1123.           create.viewContainerBody(),
  1124.           create.viewContainerFooter(),
  1125.         ],
  1126.       })
  1127.  
  1128.       document.body.append(elements.container)
  1129.     },
  1130.  
  1131.     viewContainerBody() {
  1132.       elements.image = $.create('img', {
  1133.         className: 'iv-image',
  1134.         events: {
  1135.           'mousedown mouseup mousemove mouseout dblclick': events.mouse,
  1136.         },
  1137.       })
  1138.  
  1139.       elements.imageThumbnail = $.create('img', {
  1140.         className: 'iv-thumbnail',
  1141.       })
  1142.  
  1143.       elements.imageContainer = $.create('div', {
  1144.         className: 'iv-image-view__body',
  1145.         contents: [
  1146.           {
  1147.             tag: 'div',
  1148.             className: 'iv-image-view__backdrop',
  1149.             events: {
  1150.               click: image.hide,
  1151.             },
  1152.           },
  1153.           {
  1154.             tag: 'div',
  1155.             className: 'iv-thumbnail-wrapper',
  1156.             contents: elements.imageThumbnail,
  1157.           },
  1158.           elements.image,
  1159.         ],
  1160.       })
  1161.  
  1162.       return elements.imageContainer
  1163.     },
  1164.  
  1165.     viewContainerHeader() {
  1166.       elements.imageNumber = document.createElement('span')
  1167.       elements.imageTotal = document.createElement('span')
  1168.       const imageNumber = $.create('div', {
  1169.         className: 'iv-image-view__number single-hide',
  1170.         contents: [elements.imageNumber, '/', elements.imageTotal],
  1171.       })
  1172.  
  1173.       elements.buttons.close = create.toolbarButton(
  1174.         'Close (Esc)',
  1175.         'close',
  1176.         image.hide
  1177.       )
  1178.  
  1179.       return {
  1180.         tag: 'div',
  1181.         className: 'iv-image-view__header-wrapper',
  1182.         contents: {
  1183.           tag: 'div',
  1184.           className: 'iv-image-view__header',
  1185.           contents: [imageNumber, elements.buttons.close],
  1186.         },
  1187.       }
  1188.     },
  1189.  
  1190.     viewContainerFooter() {
  1191.       const buttons = elements.buttons
  1192.  
  1193.       buttons.previous = create.toolbarButton(
  1194.         'Previous (←)',
  1195.         'previous',
  1196.         image.previous,
  1197.         'single-hide'
  1198.       )
  1199.       buttons.toggleFullHeight = create.toolbarButton(
  1200.         'Toggle full height (Space)',
  1201.         'expand',
  1202.         image.toggleFullHeight
  1203.       )
  1204.       buttons.next = create.toolbarButton(
  1205.         'Next (→)',
  1206.         'next',
  1207.         image.next,
  1208.         'single-hide'
  1209.       )
  1210.  
  1211.       return {
  1212.         tag: 'div',
  1213.         className: 'iv-image-view__footer-wrapper',
  1214.         contents: {
  1215.           tag: 'div',
  1216.           className: 'iv-image-view__footer',
  1217.           contents: [buttons.previous, buttons.toggleFullHeight, buttons.next],
  1218.         },
  1219.       }
  1220.     },
  1221.  
  1222.     toolbarButton(title, icon, handler, className = '') {
  1223.       return $.create('a', {
  1224.         href: '#',
  1225.         title,
  1226.         className: `iv-icon-button iv-icon iv-icon--type-${icon} ${className}`,
  1227.         events: {
  1228.           click: (event) => {
  1229.             event.preventDefault()
  1230.             handler()
  1231.           },
  1232.         },
  1233.       })
  1234.     },
  1235.   }
  1236.  
  1237.   $.ready().then(async () => {
  1238.     const hostConfig = await initHostConfig()
  1239.  
  1240.     initViewer(hostConfig.enabledHosts)
  1241.   })
  1242. })()