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strict';\n\n/**\n * @version 2.2.3\n * @overview QZ Tray Connector\n * \n * Connects a web client to the QZ Tray software.\n * Enables printing and device communication from javascript.\n */\nvar qz = (function() {\n\n///// POLYFILLS /////\n\n if (!Array.isArray) {\n Array.isArray = function(arg) {\n return Object.prototype.toString.call(arg) === '[object Array]';\n };\n }\n\n if (!Number.isInteger) {\n Number.isInteger = function(value) {\n return typeof value === 'number' && isFinite(value) && Math.floor(value) === value;\n };\n }\n\n///// PRIVATE METHODS /////\n\n var _qz = {\n VERSION: \"2.2.3\", //must match @version above\n DEBUG: false,\n\n log: {\n /** Debugging messages */\n trace: function() { if (_qz.DEBUG) { console.log.apply(console, arguments); } },\n /** General messages */\n info: function() { console.info.apply(console, arguments); },\n /** General warnings */\n warn: function() { console.warn.apply(console, arguments); },\n /** Debugging errors */\n allay: function() 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forcing insecure connection\");\n config.usingSecure = false;\n }\n } else if (!config.port.insecure.length && !config.usingSecure) {\n _qz.log.trace(\"No insecure ports specified - forcing secure connection\");\n config.usingSecure = true;\n }\n\n var deeper = function() {\n if (_qz.websocket.shutdown) {\n //connection attempt was cancelled, bail out\n reject(new Error(\"Connection attempt cancelled by user\"));\n return;\n }\n\n config.port.portIndex++;\n\n if ((config.usingSecure && config.port.portIndex >= config.port.secure.length)\n || (!config.usingSecure && config.port.portIndex >= config.port.insecure.length)) {\n if (config.hostIndex >= config.host.length - 1) {\n //give up, all hope is lost\n reject(new Error(\"Unable to establish connection with QZ\"));\n return;\n } else {\n config.hostIndex++;\n config.port.portIndex = 0;\n }\n }\n\n // recursive call until connection established or all ports are exhausted\n _qz.websocket.setup.findConnection(config, resolve, reject);\n };\n\n var address;\n if (config.usingSecure) {\n address = config.protocol.secure + config.host[config.hostIndex] + \":\" + config.port.secure[config.port.portIndex];\n } else {\n address = config.protocol.insecure + config.host[config.hostIndex] + \":\" + config.port.insecure[config.port.portIndex];\n }\n\n try {\n _qz.log.trace(\"Attempting connection\", address);\n _qz.websocket.connection = new _qz.tools.ws(address);\n }\n catch(err) {\n _qz.log.error(err);\n deeper();\n return;\n }\n\n if (_qz.websocket.connection != null) {\n _qz.websocket.connection.established = false;\n\n //called on successful connection to qz, begins setup of websocket calls and resolves connect promise after certificate is sent\n _qz.websocket.connection.onopen = function(evt) {\n if (!_qz.websocket.connection.established) {\n _qz.log.trace(evt);\n _qz.log.info(\"Established connection with QZ Tray on \" + address);\n\n _qz.websocket.setup.openConnection({ resolve: resolve, reject: reject });\n\n if (config.keepAlive > 0) {\n var interval = setInterval(function() {\n if (!_qz.tools.isActive() || _qz.websocket.connection.interval !== interval) {\n clearInterval(interval);\n return;\n }\n\n _qz.websocket.connection.send(\"ping\");\n }, config.keepAlive * 1000);\n\n _qz.websocket.connection.interval = interval;\n }\n }\n };\n\n //called during websocket close during setup\n _qz.websocket.connection.onclose = function() {\n // Safari compatibility fix to raise error event\n if (_qz.websocket.connection && typeof navigator !== 'undefined' && navigator.userAgent.indexOf('Safari') != -1 && navigator.userAgent.indexOf('Chrome') == -1) {\n _qz.websocket.connection.onerror();\n }\n };\n\n //called for errors during setup (such as invalid ports), reject connect promise only if all ports have been tried\n _qz.websocket.connection.onerror = function(evt) {\n _qz.log.trace(evt);\n\n _qz.websocket.connection = null;\n\n deeper();\n };\n } else {\n reject(new Error(\"Unable to create a websocket connection\"));\n }\n },\n\n /** Finish setting calls on successful connection, sets web socket calls that won't settle the promise. */\n openConnection: function(openPromise) {\n _qz.websocket.connection.established = true;\n\n //called when an open connection is closed\n _qz.websocket.connection.onclose = function(evt) {\n _qz.log.trace(evt);\n\n _qz.websocket.connection = null;\n _qz.websocket.callClose(evt);\n _qz.log.info(\"Closed connection with QZ Tray\");\n\n for(var uid in _qz.websocket.pendingCalls) {\n if (_qz.websocket.pendingCalls.hasOwnProperty(uid)) {\n _qz.websocket.pendingCalls[uid].reject(new Error(\"Connection closed before response received\"));\n }\n }\n\n //if this is set, then an explicit close call was made\n if (this.promise != undefined) {\n this.promise.resolve();\n }\n };\n\n //called for any errors with an open connection\n _qz.websocket.connection.onerror = function(evt) {\n _qz.websocket.callError(evt);\n };\n\n //send JSON objects to qz\n _qz.websocket.connection.sendData = function(obj) {\n _qz.log.trace(\"Preparing object for websocket\", obj);\n\n if (obj.timestamp == undefined) {\n obj.timestamp = Date.now();\n if (typeof obj.timestamp !== 'number') {\n obj.timestamp = new Date().getTime();\n }\n }\n if (obj.promise != undefined) {\n obj.uid = _qz.websocket.setup.newUID();\n _qz.websocket.pendingCalls[obj.uid] = obj.promise;\n }\n\n // track requesting monitor\n obj.position = {\n x: typeof screen !== 'undefined' ? ((screen.availWidth || screen.width) / 2) + (screen.left || screen.availLeft || 0) : 0,\n y: typeof screen !== 'undefined' ? ((screen.availHeight || screen.height) / 2) + (screen.top || screen.availTop || 0) : 0\n };\n\n try {\n if (obj.call != undefined && obj.signature == undefined && _qz.security.needsSigned(obj.call)) {\n var signObj = {\n call: obj.call,\n params: obj.params,\n timestamp: obj.timestamp\n };\n\n //make a hashing promise if not already one\n var hashing = _qz.tools.hash(_qz.tools.stringify(signObj));\n if (!hashing.then) {\n hashing = _qz.tools.promise(function(resolve) {\n resolve(hashing);\n });\n }\n\n hashing.then(function(hashed) {\n return _qz.security.callSign(hashed);\n }).then(function(signature) {\n _qz.log.trace(\"Signature for call\", signature);\n obj.signature = signature || \"\";\n obj.signAlgorithm = _qz.security.signAlgorithm;\n\n _qz.signContent = undefined;\n _qz.websocket.connection.send(_qz.tools.stringify(obj));\n });\n } else {\n _qz.log.trace(\"Signature for call\", obj.signature);\n\n //called for pre-signed content and (unsigned) setup calls\n _qz.websocket.connection.send(_qz.tools.stringify(obj));\n }\n }\n catch(err) {\n _qz.log.error(err);\n\n if (obj.promise != undefined) {\n obj.promise.reject(err);\n delete _qz.websocket.pendingCalls[obj.uid];\n }\n }\n };\n\n //receive message from qz\n _qz.websocket.connection.onmessage = function(evt) {\n var returned = JSON.parse(evt.data);\n\n if (returned.uid == null) {\n if (returned.type == null) {\n //incorrect response format, likely connected to incompatible qz version\n _qz.websocket.connection.close(4003, \"Connected to incompatible QZ Tray version\");\n\n } else {\n //streams (callbacks only, no promises)\n switch(returned.type) {\n case _qz.streams.serial:\n if (!returned.event) {\n returned.event = JSON.stringify({ portName: returned.key, output: returned.data });\n }\n\n _qz.serial.callSerial(JSON.parse(returned.event));\n break;\n case _qz.streams.socket:\n _qz.socket.callSocket(JSON.parse(returned.event));\n break;\n case _qz.streams.usb:\n if (!returned.event) {\n returned.event = JSON.stringify({ vendorId: returned.key[0], productId: returned.key[1], output: returned.data });\n }\n\n _qz.usb.callUsb(JSON.parse(returned.event));\n break;\n case _qz.streams.hid:\n _qz.hid.callHid(JSON.parse(returned.event));\n break;\n case _qz.streams.printer:\n _qz.printers.callPrinter(JSON.parse(returned.event));\n break;\n case _qz.streams.file:\n _qz.file.callFile(JSON.parse(returned.event));\n break;\n default:\n _qz.log.allay(\"Cannot determine stream type for callback\", returned);\n break;\n }\n }\n\n return;\n }\n\n _qz.log.trace(\"Received response from websocket\", returned);\n\n var promise = _qz.websocket.pendingCalls[returned.uid];\n if (promise == undefined) {\n _qz.log.allay('No promise found for returned response');\n } else {\n if (returned.error != undefined) {\n promise.reject(new Error(returned.error));\n } else {\n promise.resolve(returned.result);\n }\n }\n\n delete _qz.websocket.pendingCalls[returned.uid];\n };\n\n\n //send up the certificate before making any calls\n //also gives the user a chance to deny the connection\n function sendCert(cert) {\n if (cert === undefined) { cert = null; }\n\n //websocket setup, query what version is connected\n qz.api.getVersion().then(function(version) {\n _qz.websocket.connection.version = version;\n _qz.websocket.connection.semver = version.toLowerCase().replace(/-rc\\./g, \"-rc\").split(/[\\\\+\\\\.-]/g);\n for(var i = 0; i < _qz.websocket.connection.semver.length; i++) {\n try {\n if (i == 3 && _qz.websocket.connection.semver[i].toLowerCase().indexOf(\"rc\") == 0) {\n // Handle \"rc1\" pre-release by negating build info\n _qz.websocket.connection.semver[i] = -(_qz.websocket.connection.semver[i].replace(/\\D/g, \"\"));\n continue;\n }\n _qz.websocket.connection.semver[i] = parseInt(_qz.websocket.connection.semver[i]);\n }\n catch(ignore) {}\n\n if (_qz.websocket.connection.semver.length < 4) {\n _qz.websocket.connection.semver[3] = 0;\n }\n }\n\n //algorithm can be declared before a connection, check for incompatibilities now that we have one\n _qz.compatible.algorithm(true);\n }).then(function() {\n _qz.websocket.connection.sendData({ certificate: cert, promise: openPromise });\n });\n }\n\n _qz.security.callCert().then(sendCert).catch(function(error) {\n _qz.log.warn(\"Failed to get certificate:\", error);\n\n if (_qz.security.rejectOnCertFailure) {\n openPromise.reject(error);\n } else {\n sendCert(null);\n }\n });\n },\n\n /** Generate unique ID used to map a response to a call. */\n newUID: function() {\n var len = 6;\n return (new Array(len + 1).join(\"0\") + (Math.random() * Math.pow(36, len) << 0).toString(36)).slice(-len)\n }\n },\n\n dataPromise: function(callName, params, signature, signingTimestamp) {\n return _qz.tools.promise(function(resolve, reject) {\n var msg = {\n call: callName,\n promise: { resolve: resolve, reject: reject },\n params: params,\n signature: signature,\n timestamp: signingTimestamp\n };\n\n _qz.websocket.connection.sendData(msg);\n });\n },\n\n /** Library of promises awaiting a response, uid -> promise */\n pendingCalls: {},\n\n /** List of functions to call on error from the websocket. */\n errorCallbacks: [],\n /** Calls all functions registered to listen for errors. */\n callError: function(evt) {\n if (Array.isArray(_qz.websocket.errorCallbacks)) {\n for(var i = 0; i < _qz.websocket.errorCallbacks.length; i++) {\n _qz.websocket.errorCallbacks[i](evt);\n }\n } else {\n _qz.websocket.errorCallbacks(evt);\n }\n },\n\n /** List of function to call on closing from the websocket. */\n closedCallbacks: [],\n /** Calls all functions registered to listen for closing. */\n callClose: function(evt) {\n if (Array.isArray(_qz.websocket.closedCallbacks)) {\n for(var i = 0; i < _qz.websocket.closedCallbacks.length; i++) {\n _qz.websocket.closedCallbacks[i](evt);\n }\n } else {\n _qz.websocket.closedCallbacks(evt);\n }\n }\n },\n\n\n printing: {\n /** Default options used for new printer configs. Can be overridden using {@link qz.configs.setDefaults}. */\n defaultConfig: {\n //value purposes are explained in the qz.configs.setDefaults docs\n\n bounds: null,\n colorType: 'color',\n copies: 1,\n density: 0,\n duplex: false,\n fallbackDensity: null,\n interpolation: 'bicubic',\n jobName: null,\n legacy: false,\n margins: 0,\n orientation: null,\n paperThickness: null,\n printerTray: null,\n rasterize: false,\n rotation: 0,\n scaleContent: true,\n size: null,\n units: 'in',\n\n forceRaw: false,\n encoding: null,\n spool: null\n }\n },\n\n\n serial: {\n /** List of functions called when receiving data from serial connection. */\n serialCallbacks: [],\n /** Calls all functions registered to listen for serial events. */\n callSerial: function(streamEvent) {\n if (Array.isArray(_qz.serial.serialCallbacks)) {\n for(var i = 0; i < _qz.serial.serialCallbacks.length; i++) {\n _qz.serial.serialCallbacks[i](streamEvent);\n }\n } else {\n _qz.serial.serialCallbacks(streamEvent);\n }\n }\n },\n\n\n socket: {\n /** List of functions called when receiving data from network socket connection. */\n socketCallbacks: [],\n /** Calls all functions registered to listen for network socket events. */\n callSocket: function(socketEvent) {\n if (Array.isArray(_qz.socket.socketCallbacks)) {\n for(var i = 0; i < _qz.socket.socketCallbacks.length; i++) {\n _qz.socket.socketCallbacks[i](socketEvent);\n }\n } else {\n _qz.socket.socketCallbacks(socketEvent);\n }\n }\n },\n\n\n usb: {\n /** List of functions called when receiving data from usb connection. */\n usbCallbacks: [],\n /** Calls all functions registered to listen for usb events. */\n callUsb: function(streamEvent) {\n if (Array.isArray(_qz.usb.usbCallbacks)) {\n for(var i = 0; i < _qz.usb.usbCallbacks.length; i++) {\n _qz.usb.usbCallbacks[i](streamEvent);\n }\n } else {\n _qz.usb.usbCallbacks(streamEvent);\n }\n }\n },\n\n\n hid: {\n /** List of functions called when receiving data from hid connection. */\n hidCallbacks: [],\n /** Calls all functions registered to listen for hid events. */\n callHid: function(streamEvent) {\n if (Array.isArray(_qz.hid.hidCallbacks)) {\n for(var i = 0; i < _qz.hid.hidCallbacks.length; i++) {\n _qz.hid.hidCallbacks[i](streamEvent);\n }\n } else {\n _qz.hid.hidCallbacks(streamEvent);\n }\n }\n },\n\n\n printers: {\n /** List of functions called when receiving data from printer connection. */\n printerCallbacks: [],\n /** Calls all functions registered to listen for printer events. */\n callPrinter: function(streamEvent) {\n if (Array.isArray(_qz.printers.printerCallbacks)) {\n for(var i = 0; i < _qz.printers.printerCallbacks.length; i++) {\n _qz.printers.printerCallbacks[i](streamEvent);\n }\n } else {\n _qz.printers.printerCallbacks(streamEvent);\n }\n }\n },\n\n\n file: {\n /** List of functions called when receiving info regarding file changes. */\n fileCallbacks: [],\n /** Calls all functions registered to listen for file events. */\n callFile: function(streamEvent) {\n if (Array.isArray(_qz.file.fileCallbacks)) {\n for(var i = 0; i < _qz.file.fileCallbacks.length; i++) {\n _qz.file.fileCallbacks[i](streamEvent);\n }\n } else {\n _qz.file.fileCallbacks(streamEvent);\n }\n }\n },\n\n\n security: {\n /** Function used to resolve promise when acquiring site's public certificate. */\n certHandler: function(resolve, reject) { reject(); },\n /** Called to create new promise (using {@link _qz.security.certHandler}) for certificate retrieval. */\n callCert: function() {\n if (typeof _qz.security.certHandler.then === 'function') {\n //already a promise\n return _qz.security.certHandler;\n } else if (_qz.security.certHandler.constructor.name === \"AsyncFunction\") {\n //already callable as a promise\n return _qz.security.certHandler();\n } else {\n //turn into a promise\n return _qz.tools.promise(_qz.security.certHandler);\n }\n },\n\n /** Function used to create promise resolver when requiring signed calls. */\n signatureFactory: function() { return function(resolve) { resolve(); } },\n /** Called to create new promise (using {@link _qz.security.signatureFactory}) for signed calls. */\n callSign: function(toSign) {\n if (_qz.security.signatureFactory.constructor.name === \"AsyncFunction\") {\n //use directly\n return _qz.security.signatureFactory(toSign);\n } else {\n //use in a promise\n return _qz.tools.promise(_qz.security.signatureFactory(toSign));\n }\n },\n\n /** Signing algorithm used on signatures */\n signAlgorithm: \"SHA1\",\n\n rejectOnCertFailure: false,\n\n needsSigned: function(callName) {\n const undialoged = [\n \"printers.getStatus\",\n \"printers.stopListening\",\n \"usb.isClaimed\",\n \"usb.closeStream\",\n \"usb.releaseDevice\",\n \"hid.stopListening\",\n \"hid.isClaimed\",\n \"hid.closeStream\",\n \"hid.releaseDevice\",\n \"file.stopListening\",\n \"getVersion\"\n ];\n\n return callName != null && undialoged.indexOf(callName) === -1;\n }\n },\n\n\n tools: {\n /** Create a new promise */\n promise: function(resolver) {\n //prefer global object for historical purposes\n if (typeof RSVP !== 'undefined') {\n return new RSVP.Promise(resolver);\n } else if (typeof Promise !== 'undefined') {\n return new Promise(resolver);\n } else {\n _qz.log.error(\"Promise/A+ support is required. See qz.api.setPromiseType(...)\");\n }\n },\n\n /** Stub for rejecting with an Error from withing a Promise */\n reject: function(error) {\n return _qz.tools.promise(function(resolve, reject) {\n reject(error);\n });\n },\n\n stringify: function(object) {\n //old versions of prototype affect stringify\n var pjson = Array.prototype.toJSON;\n delete Array.prototype.toJSON;\n\n function skipKeys(key, value) {\n if (key === \"promise\") {\n return undefined;\n }\n\n return value;\n }\n\n var result = JSON.stringify(object, skipKeys);\n\n if (pjson) {\n Array.prototype.toJSON = pjson;\n }\n\n return result;\n },\n\n hash: function(data) {\n //prefer global object for historical purposes\n if (typeof Sha256 !== 'undefined') {\n return Sha256.hash(data);\n } else {\n return _qz.SHA.hash(data);\n }\n },\n\n ws: typeof WebSocket !== 'undefined' ? WebSocket : null,\n\n absolute: function(loc) {\n if (typeof window !== 'undefined' && typeof document.createElement === 'function') {\n var a = document.createElement(\"a\");\n a.href = loc;\n return a.href;\n } else if (typeof exports === 'object') {\n //node.js\n require('path').resolve(loc);\n }\n return loc;\n },\n\n relative: function(data) {\n for(var i = 0; i < data.length; i++) {\n if (data[i].constructor === Object) {\n var absolute = false;\n\n if (data[i].data && data[i].data.search && data[i].data.search(/data:image\\/\\w+;base64,/) === 0) {\n //upgrade from old base64 behavior\n data[i].flavor = \"base64\";\n data[i].data = data[i].data.replace(/^data:image\\/\\w+;base64,/, \"\");\n } else if (data[i].flavor) {\n //if flavor is known, we can directly check for absolute flavor types\n if ([\"FILE\", \"XML\"].indexOf(data[i].flavor.toUpperCase()) > -1) {\n absolute = true;\n }\n } else if (data[i].format && [\"HTML\", \"IMAGE\", \"PDF\", \"FILE\", \"XML\"].indexOf(data[i].format.toUpperCase()) > -1) {\n //if flavor is not known, all valid pixel formats default to file flavor\n //previous v2.0 data also used format as what is now flavor, so we check for those values here too\n absolute = true;\n } else if (data[i].type && (([\"PIXEL\", \"IMAGE\", \"PDF\"].indexOf(data[i].type.toUpperCase()) > -1 && !data[i].format)\n || ([\"HTML\", \"PDF\"].indexOf(data[i].type.toUpperCase()) > -1 && (!data[i].format || data[i].format.toUpperCase() === \"FILE\")))) {\n //if all we know is pixel type, then it is image's file flavor\n //previous v2.0 data also used type as what is now format, so we check for those value here too\n absolute = true;\n }\n\n if (absolute) {\n //change relative links to absolute\n data[i].data = _qz.tools.absolute(data[i].data);\n }\n if (data[i].options && typeof data[i].options.overlay === 'string') {\n data[i].options.overlay = _qz.tools.absolute(data[i].options.overlay);\n }\n }\n }\n },\n\n /** Performs deep copy to target from remaining params */\n extend: function(target) {\n //special case when reassigning properties as objects in a deep copy\n if (typeof target !== 'object') {\n target = {};\n }\n\n for(var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n if (!source) { continue; }\n\n for(var key in source) {\n if (source.hasOwnProperty(key)) {\n if (target === source[key]) { continue; }\n\n if (source[key] && source[key].constructor && source[key].constructor === Object) {\n var clone;\n if (Array.isArray(source[key])) {\n clone = target[key] || [];\n } else {\n clone = target[key] || {};\n }\n\n target[key] = _qz.tools.extend(clone, source[key]);\n } else if (source[key] !== undefined) {\n target[key] = source[key];\n }\n }\n }\n }\n\n return target;\n },\n\n versionCompare: function(major, minor, patch, build) {\n if (_qz.tools.assertActive()) {\n var semver = _qz.websocket.connection.semver;\n if (semver[0] != major) {\n return semver[0] - major;\n }\n if (minor != undefined && semver[1] != minor) {\n return semver[1] - minor;\n }\n if (patch != undefined && semver[2] != patch) {\n return semver[2] - patch;\n }\n if (build != undefined && semver.length > 3 && semver[3] != build) {\n return Number.isInteger(semver[3]) && Number.isInteger(build) ? semver[3] - build : semver[3].toString().localeCompare(build.toString());\n }\n return 0;\n }\n },\n\n isVersion: function(major, minor, patch, build) {\n return _qz.tools.versionCompare(major, minor, patch, build) == 0;\n },\n\n isActive: function() {\n return !_qz.websocket.shutdown && _qz.websocket.connection != null\n && (_qz.websocket.connection.readyState === _qz.tools.ws.OPEN\n || _qz.websocket.connection.readyState === _qz.tools.ws.CONNECTING);\n },\n\n assertActive: function() {\n if (_qz.tools.isActive()) {\n return true;\n }\n // Promise won't reject on throw; yet better than 'undefined'\n throw new Error(\"A connection to QZ has not been established yet\");\n },\n\n uint8ArrayToHex: function(uint8) {\n return Array.from(uint8)\n .map(function(i) { return i.toString(16).padStart(2, '0'); })\n .join('');\n },\n\n uint8ArrayToBase64: function(uint8) {\n /**\n * Adapted from Egor Nepomnyaschih's code under MIT Licence (C) 2020\n * see https://gist.github.com/enepomnyaschih/72c423f727d395eeaa09697058238727\n */\n var map = [\n \"A\", \"B\", \"C\", \"D\", \"E\", \"F\", \"G\", \"H\", \"I\", \"J\", \"K\", \"L\", \"M\", \"N\", \"O\", \"P\", \"Q\", \"R\", \"S\", \"T\", \"U\",\n \"V\", \"W\", \"X\", \"Y\", \"Z\", \"a\", \"b\", \"c\", \"d\", \"e\", \"f\", \"g\", \"h\", \"i\", \"j\", \"k\", \"l\", \"m\", \"n\", \"o\", \"p\",\n \"q\", \"r\", \"s\", \"t\", \"u\", \"v\", \"w\", \"x\", \"y\", \"z\", \"0\", \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\", \"+\", \"/\"\n ];\n\n var result = '', i, l = uint8.length;\n for (i = 2; i < l; i += 3) {\n result += map[uint8[i - 2] >> 2];\n result += map[((uint8[i - 2] & 0x03) << 4) | (uint8[i - 1] >> 4)];\n result += map[((uint8[i - 1] & 0x0F) << 2) | (uint8[i] >> 6)];\n result += map[uint8[i] & 0x3F];\n }\n if (i === l + 1) { // 1 octet yet to write\n result += map[uint8[i - 2] >> 2];\n result += map[(uint8[i - 2] & 0x03) << 4];\n result += \"==\";\n }\n if (i === l) { // 2 octets yet to write\n result += map[uint8[i - 2] >> 2];\n result += map[((uint8[i - 2] & 0x03) << 4) | (uint8[i - 1] >> 4)];\n result += map[(uint8[i - 1] & 0x0F) << 2];\n result += \"=\";\n }\n return result;\n },\n },\n\n compatible: {\n /** Converts message format to a previous version's */\n data: function(printData) {\n // special handling for Uint8Array\n for(var i = 0; i < printData.length; i++) {\n if (printData[i].constructor === Object && printData[i].data instanceof Uint8Array) {\n if (printData[i].flavor) {\n var flavor = printData[i].flavor.toString().toUpperCase();\n switch(flavor) {\n case 'BASE64':\n printData[i].data = _qz.tools.uint8ArrayToBase64(printData[i].data);\n break;\n case 'HEX':\n printData[i].data = _qz.tools.uint8ArrayToHex(printData[i].data);\n break;\n default:\n throw new Error(\"Uint8Array conversion to '\" + flavor + \"' is not supported.\");\n }\n }\n }\n }\n\n if (_qz.tools.isVersion(2, 0)) {\n /*\n 2.0.x conversion\n -----\n type=pixel -> use format as 2.0 type (unless 'command' format, which forces 2.0 'raw' type)\n type=raw -> 2.0 type has to be 'raw'\n if format is 'image' -> force 2.0 'image' format, ignore everything else (unsupported in 2.0)\n\n flavor translates straight to 2.0 format (unless forced to 'raw'/'image')\n */\n _qz.log.trace(\"Converting print data to v2.0 for \" + _qz.websocket.connection.version);\n for(var i = 0; i < printData.length; i++) {\n if (printData[i].constructor === Object) {\n if (printData[i].type && printData[i].type.toUpperCase() === \"RAW\" && printData[i].format && printData[i].format.toUpperCase() === \"IMAGE\") {\n if (printData[i].flavor && printData[i].flavor.toUpperCase() === \"BASE64\") {\n //special case for raw base64 images\n printData[i].data = \"data:image/compat;base64,\" + printData[i].data;\n }\n printData[i].flavor = \"IMAGE\"; //forces 'image' format when shifting for conversion\n }\n if ((printData[i].type && printData[i].type.toUpperCase() === \"RAW\") || (printData[i].format && printData[i].format.toUpperCase() === \"COMMAND\")) {\n printData[i].format = \"RAW\"; //forces 'raw' type when shifting for conversion\n }\n\n printData[i].type = printData[i].format;\n printData[i].format = printData[i].flavor;\n delete printData[i].flavor;\n }\n }\n }\n },\n\n /* Converts config defaults to match previous version */\n config: function(config, dirty) {\n if (_qz.tools.isVersion(2, 0)) {\n if (!dirty.rasterize) {\n config.rasterize = true;\n }\n }\n if(_qz.tools.versionCompare(2, 2) < 0) {\n if(config.forceRaw !== 'undefined') {\n config.altPrinting = config.forceRaw;\n delete config.forceRaw;\n }\n }\n if(_qz.tools.versionCompare(2, 1, 2, 11) < 0) {\n if(config.spool) {\n if(config.spool.size) {\n config.perSpool = config.spool.size;\n delete config.spool.size;\n }\n if(config.spool.end) {\n config.endOfDoc = config.spool.end;\n delete config.spool.end;\n }\n delete config.spool;\n }\n }\n return config;\n },\n\n /** Compat wrapper with previous version **/\n networking: function(hostname, port, signature, signingTimestamp, mappingCallback) {\n // Use 2.0\n if (_qz.tools.isVersion(2, 0)) {\n return _qz.tools.promise(function(resolve, reject) {\n _qz.websocket.dataPromise('websocket.getNetworkInfo', {\n hostname: hostname,\n port: port\n }, signature, signingTimestamp).then(function(data) {\n if (typeof mappingCallback !== 'undefined') {\n resolve(mappingCallback(data));\n } else {\n resolve(data);\n }\n }, reject);\n });\n }\n // Wrap 2.1\n return _qz.tools.promise(function(resolve, reject) {\n _qz.websocket.dataPromise('networking.device', {\n hostname: hostname,\n port: port\n }, signature, signingTimestamp).then(function(data) {\n resolve({ ipAddress: data.ip, macAddress: data.mac });\n }, reject);\n });\n },\n\n /** Check if QZ version supports chosen algorithm */\n algorithm: function(quiet) {\n //if not connected yet we will assume compatibility exists for the time being\n if (_qz.tools.isActive()) {\n if (_qz.tools.isVersion(2, 0)) {\n if (!quiet) {\n _qz.log.warn(\"Connected to an older version of QZ, alternate signature algorithms are not supported\");\n }\n return false;\n }\n }\n\n return true;\n }\n },\n\n /**\n * Adapted from Chris Veness's code under MIT Licence (C) 2002\n * see http://www.movable-type.co.uk/scripts/sha256.html\n */\n SHA: {\n //@formatter:off - keep this block compact\n hash: function(msg) {\n // add trailing '1' bit (+ 0's padding) to string [§5.1.1]\n msg = _qz.SHA._utf8Encode(msg) + String.fromCharCode(0x80);\n\n // constants [§4.2.2]\n var K = [\n 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,\n 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,\n 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,\n 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,\n 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,\n 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,\n 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,\n 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2\n ];\n // initial hash value [§5.3.1]\n var H = [ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ];\n\n // convert string msg into 512-bit/16-integer blocks arrays of ints [§5.2.1]\n var l = msg.length / 4 + 2; // length (in 32-bit integers) of msg + ‘1’ + appended length\n var N = Math.ceil(l / 16); // number of 16-integer-blocks required to hold 'l' ints\n var M = new Array(N);\n\n for(var i = 0; i < N; i++) {\n M[i] = new Array(16);\n for(var j = 0; j < 16; j++) { // encode 4 chars per integer, big-endian encoding\n M[i][j] = (msg.charCodeAt(i * 64 + j * 4) << 24) | (msg.charCodeAt(i * 64 + j * 4 + 1) << 16) |\n (msg.charCodeAt(i * 64 + j * 4 + 2) << 8) | (msg.charCodeAt(i * 64 + j * 4 + 3));\n } // note running off the end of msg is ok 'cos bitwise ops on NaN return 0\n }\n // add length (in bits) into final pair of 32-bit integers (big-endian) [§5.1.1]\n // note: most significant word would be (len-1)*8 >>> 32, but since JS converts\n // bitwise-op args to 32 bits, we need to simulate this by arithmetic operators\n M[N-1][14] = ((msg.length - 1) * 8) / Math.pow(2, 32);\n M[N-1][14] = Math.floor(M[N-1][14]);\n M[N-1][15] = ((msg.length - 1) * 8) & 0xffffffff;\n\n // HASH COMPUTATION [§6.1.2]\n var W = new Array(64); var a, b, c, d, e, f, g, h;\n for(var i = 0; i < N; i++) {\n // 1 - prepare message schedule 'W'\n for(var t = 0; t < 16; t++) { W[t] = M[i][t]; }\n for(var t = 16; t < 64; t++) { W[t] = (_qz.SHA._dev1(W[t-2]) + W[t-7] + _qz.SHA._dev0(W[t-15]) + W[t-16]) & 0xffffffff; }\n // 2 - initialise working variables a, b, c, d, e, f, g, h with previous hash value\n a = H[0]; b = H[1]; c = H[2]; d = H[3]; e = H[4]; f = H[5]; g = H[6]; h = H[7];\n // 3 - main loop (note 'addition modulo 2^32')\n for(var t = 0; t < 64; t++) {\n var T1 = h + _qz.SHA._sig1(e) + _qz.SHA._ch(e, f, g) + K[t] + W[t];\n var T2 = _qz.SHA._sig0(a) + _qz.SHA._maj(a, b, c);\n h = g; g = f; f = e; e = (d + T1) & 0xffffffff;\n d = c; c = b; b = a; a = (T1 + T2) & 0xffffffff;\n }\n // 4 - compute the new intermediate hash value (note 'addition modulo 2^32')\n H[0] = (H[0]+a) & 0xffffffff; H[1] = (H[1]+b) & 0xffffffff; H[2] = (H[2]+c) & 0xffffffff; H[3] = (H[3]+d) & 0xffffffff;\n H[4] = (H[4]+e) & 0xffffffff; H[5] = (H[5]+f) & 0xffffffff; H[6] = (H[6]+g) & 0xffffffff; H[7] = (H[7]+h) & 0xffffffff;\n }\n\n return _qz.SHA._hexStr(H[0]) + _qz.SHA._hexStr(H[1]) + _qz.SHA._hexStr(H[2]) + _qz.SHA._hexStr(H[3]) +\n _qz.SHA._hexStr(H[4]) + _qz.SHA._hexStr(H[5]) + _qz.SHA._hexStr(H[6]) + _qz.SHA._hexStr(H[7]);\n },\n\n // Rotates right (circular right shift) value x by n positions\n _rotr: function(n, x) { return (x >>> n) | (x << (32 - n)); },\n // logical functions\n _sig0: function(x) { return _qz.SHA._rotr(2, x) ^ _qz.SHA._rotr(13, x) ^ _qz.SHA._rotr(22, x); },\n _sig1: function(x) { return _qz.SHA._rotr(6, x) ^ _qz.SHA._rotr(11, x) ^ _qz.SHA._rotr(25, x); },\n _dev0: function(x) { return _qz.SHA._rotr(7, x) ^ _qz.SHA._rotr(18, x) ^ (x >>> 3); },\n _dev1: function(x) { return _qz.SHA._rotr(17, x) ^ _qz.SHA._rotr(19, x) ^ (x >>> 10); },\n _ch: function(x, y, z) { return (x & y) ^ (~x & z); },\n _maj: function(x, y, z) { return (x & y) ^ (x & z) ^ (y & z); },\n // note can't use toString(16) as it is implementation-dependant, and in IE returns signed numbers when used on full words\n _hexStr: function(n) { var s = \"\", v; for(var i = 7; i >= 0; i--) { v = (n >>> (i * 4)) & 0xf; s += v.toString(16); } return s; },\n // implementation of deprecated unescape() based on https://cwestblog.com/2011/05/23/escape-unescape-deprecated/ (and comments)\n _unescape: function(str) {\n return str.replace(/%(u[\\da-f]{4}|[\\da-f]{2})/gi, function(seq) {\n if (seq.length - 1) {\n return String.fromCharCode(parseInt(seq.substring(seq.length - 3 ? 2 : 1), 16))\n } else {\n var code = seq.charCodeAt(0);\n return code < 256 ? \"%\" + (0 + code.toString(16)).slice(-2).toUpperCase() : \"%u\" + (\"000\" + code.toString(16)).slice(-4).toUpperCase()\n }\n });\n },\n _utf8Encode: function(str) {\n return _qz.SHA._unescape(encodeURIComponent(str));\n }\n //@formatter:on\n },\n };\n\n\n///// CONFIG CLASS ////\n\n /** Object to handle configured printer options. */\n function Config(printer, opts) {\n\n this.config = _qz.tools.extend({}, _qz.printing.defaultConfig); //create a copy of the default options\n this._dirtyOpts = {}; //track which config options have changed from the defaults\n\n /**\n * Set the printer assigned to this config.\n * @param {string|Object} newPrinter Name of printer. Use object type to specify printing to file or host.\n * @param {string} [newPrinter.name] Name of printer to send printing.\n * @param {string} [newPrinter.file] DEPRECATED: Name of file to send printing.\n * @param {string} [newPrinter.host] IP address or host name to send printing.\n * @param {string} [newPrinter.port] Port used by <printer.host>.\n */\n this.setPrinter = function(newPrinter) {\n if (typeof newPrinter === 'string') {\n newPrinter = { name: newPrinter };\n }\n\n if(newPrinter && newPrinter.file) {\n // TODO: Warn for UNC paths too https://github.com/qzind/tray/issues/730\n if(newPrinter.file.indexOf(\"\\\\\\\\\") != 0) {\n _qz.log.warn(\"Printing to file is deprecated. See https://github.com/qzind/tray/issues/730\");\n }\n }\n\n this.printer = newPrinter;\n };\n\n /**\n * @returns {Object} The printer currently assigned to this config.\n */\n this.getPrinter = function() {\n return this.printer;\n };\n\n /**\n * Alter any of the printer options currently applied to this config.\n * @param newOpts {Object} The options to change. See qz.configs.setDefaults docs for available values.\n *\n * @see qz.configs.setDefaults\n */\n this.reconfigure = function(newOpts) {\n for(var key in newOpts) {\n if (newOpts[key] !== undefined) {\n this._dirtyOpts[key] = true;\n }\n }\n\n _qz.tools.extend(this.config, newOpts);\n };\n\n /**\n * @returns {Object} The currently applied options on this config.\n */\n this.getOptions = function() {\n return _qz.compatible.config(this.config, this._dirtyOpts);\n };\n\n // init calls for new config object\n this.setPrinter(printer);\n this.reconfigure(opts);\n }\n\n /**\n * Shortcut method for calling qz.print with a particular config.\n * @param {Array} data Array of data being sent to the printer. See qz.print docs for available values.\n * @param {boolean} [signature] Pre-signed signature of JSON string containing call, params, and timestamp.\n * @param {number} [signingTimestamp] Required with signature. Timestamp used with pre-signed content.\n *\n * @example\n * qz.print(myConfig, ...); // OR\n * myConfig.print(...);\n *\n * @see qz.print\n */\n Config.prototype.print = function(data, signature, signingTimestamp) {\n qz.print(this, data, signature, signingTimestamp);\n };\n\n\n///// PUBLIC METHODS /////\n\n /** @namespace qz */\n var qz = {\n\n /**\n * Calls related specifically to the web socket connection.\n * @namespace qz.websocket\n */\n websocket: {\n /**\n * Check connection status. Active connection is necessary for other calls to run.\n *\n * @returns {boolean} If there is an active connection with QZ Tray.\n *\n * @see connect\n *\n * @memberof qz.websocket\n */\n isActive: function() {\n return _qz.tools.isActive();\n },\n\n /**\n * Call to setup connection with QZ Tray on user's system.\n *\n * @param {Object} [options] Configuration options for the web socket connection.\n * @param {string|Array} [options.host=['localhost', 'localhost.qz.io']] Host running the QZ Tray software.\n * @param {Object} [options.port] Config options for ports to cycle.\n * @param {Array} [options.port.secure=[8181, 8282, 8383, 8484]] Array of secure (WSS) ports to try\n * @param {Array} [options.port.insecure=[8182, 8283, 8384, 8485]] Array of insecure (WS) ports to try\n * @param {boolean} [options.usingSecure=true] If the web socket should try to use secure ports for connecting.\n * @param {number} [options.keepAlive=60] Seconds between keep-alive pings to keep connection open. Set to 0 to disable.\n * @param {number} [options.retries=0] Number of times to reconnect before failing.\n * @param {number} [options.delay=0] Seconds before firing a connection. Ignored if options.retries is 0.\n *\n * @returns {Promise}\n *\n * @memberof qz.websocket\n */\n connect: function(options) {\n return _qz.tools.promise(function(resolve, reject) {\n if (_qz.websocket.connection) {\n const state = _qz.websocket.connection.readyState;\n\n if (state === _qz.tools.ws.OPEN) {\n reject(new Error(\"An open connection with QZ Tray already exists\"));\n return;\n } else if (state === _qz.tools.ws.CONNECTING) {\n reject(new Error(\"The current connection attempt has not returned yet\"));\n return;\n } else if (state === _qz.tools.ws.CLOSING) {\n reject(new Error(\"Waiting for previous disconnect request to complete\"));\n return;\n }\n }\n\n if (!_qz.tools.ws) {\n reject(new Error(\"WebSocket not supported by this browser\"));\n return;\n } else if (!_qz.tools.ws.CLOSED || _qz.tools.ws.CLOSED == 2) {\n reject(new Error(\"Unsupported WebSocket version detected: HyBi-00/Hixie-76\"));\n return;\n }\n\n //ensure some form of options exists for value checks\n if (options == undefined) { options = {}; }\n\n //disable secure ports if page is not secure\n if (typeof location === 'undefined' || location.protocol !== 'https:') {\n //respect forcing secure ports if it is defined, otherwise disable\n if (typeof options.usingSecure === 'undefined') {\n _qz.log.trace(\"Disabling secure ports due to insecure page\");\n options.usingSecure = false;\n }\n }\n\n //ensure any hosts are passed to internals as an array\n if (typeof options.host !== 'undefined' && !Array.isArray(options.host)) {\n options.host = [options.host];\n }\n\n _qz.websocket.shutdown = false; //reset state for new connection attempt\n var attempt = function(count) {\n var tried = false;\n var nextAttempt = function() {\n if (!tried) {\n tried = true;\n\n if (options && count < options.retries) {\n attempt(count + 1);\n } else {\n _qz.websocket.connection = null;\n reject.apply(null, arguments);\n }\n }\n };\n\n var delayed = function() {\n var config = _qz.tools.extend({}, _qz.websocket.connectConfig, options);\n _qz.websocket.setup.findConnection(config, resolve, nextAttempt)\n };\n if (count == 0) {\n delayed(); // only retries will be called with a delay\n } else {\n setTimeout(delayed, options.delay * 1000);\n }\n };\n\n attempt(0);\n });\n },\n\n /**\n * Stop any active connection with QZ Tray.\n *\n * @returns {Promise}\n *\n * @memberof qz.websocket\n */\n disconnect: function() {\n return _qz.tools.promise(function(resolve, reject) {\n if (_qz.websocket.connection != null) {\n if (_qz.tools.isActive()) {\n // handles closing both 'connecting' and 'connected' states\n _qz.websocket.shutdown = true;\n _qz.websocket.connection.promise = { resolve: resolve, reject: reject };\n _qz.websocket.connection.close();\n } else {\n reject(new Error(\"Current connection is still closing\"));\n }\n } else {\n reject(new Error(\"No open connection with QZ Tray\"));\n }\n });\n },\n\n /**\n * List of functions called for any connections errors outside of an API call.\n * Also called if {@link websocket#connect} fails to connect.\n *\n * @param {Function|Array} calls Single or array of Function({Event} event) calls.\n *\n * @memberof qz.websocket\n */\n setErrorCallbacks: function(calls) {\n _qz.websocket.errorCallbacks = calls;\n },\n\n /**\n * List of functions called for any connection closing event outside of an API call.\n * Also called when {@link websocket#disconnect} is called.\n *\n * @param {Function|Array} calls Single or array of Function({Event} event) calls.\n *\n * @memberof qz.websocket\n */\n setClosedCallbacks: function(calls) {\n _qz.websocket.closedCallbacks = calls;\n },\n\n /**\n * @deprecated Since 2.1.0. Please use qz.networking.device() instead\n *\n * @param {string} [hostname] Hostname to try to connect to when determining network interfaces, defaults to \"google.com\"\n * @param {number} [port] Port to use with custom hostname, defaults to 443\n * @param {string} [signature] Pre-signed signature of hashed JSON string containing call='websocket.getNetworkInfo', params object, and timestamp.\n * @param {number} [signingTimestamp] Required with signature. Timestamp used with pre-signed content.\n *\n * @returns {Promise|Error>} Connected system's network information.\n *\n * @memberof qz.websocket\n */\n getNetworkInfo: _qz.compatible.networking,\n\n /**\n * @returns {Object<{socket: String, host: String, port: Number}>} Details of active websocket connection\n *\n * @memberof qz.websocket\n */\n getConnectionInfo: function() {\n if (_qz.tools.assertActive()) {\n var url = _qz.websocket.connection.url.split(/[:\\/]+/g);\n return { socket: url[0], host: url[1], port: +url[2] };\n }\n }\n },\n\n\n /**\n * Calls related to getting printer information from the connection.\n * @namespace qz.printers\n */\n printers: {\n /**\n * @param {string} [signature] Pre-signed signature of hashed JSON string containing call='printers.getDefault, params, and timestamp.\n * @param {number} [signingTimestamp] Required with signature. Timestamp used with pre-signed content.\n *\n * @returns {Promise} Name of the connected system's default printer.\n *\n * @memberof qz.printers\n */\n getDefault: function(signature, signingTimestamp) {\n return _qz.websocket.dataPromise('printers.getDefault', null, signature, signingTimestamp);\n },\n\n /**\n * @param {string} [query] Search for a specific printer. All printers are returned if not provided.\n * @param {string} [signature] Pre-signed signature of hashed JSON string containing call='printers.find', params, and timestamp.\n * @param {number} [signingTimestamp] Required with signature. Timestamp used with pre-signed content.\n *\n * @returns {Promise|string|Error>} The matched printer name if query is provided.\n * Otherwise an array of printer names found on the connected system.\n *\n * @memberof qz.printers\n */\n find: function(query, signature, signingTimestamp) {\n return _qz.websocket.dataPromise('printers.find', { query: query }, signature, signingTimestamp);\n },\n\n /**\n * Provides a list, with additional information, for each printer available to QZ.\n *\n * @returns {Promise|Object|Error>}\n *\n * @memberof qz.printers\n */\n details: function() {\n return _qz.websocket.dataPromise('printers.detail');\n },\n\n /**\n * Start listening for printer status events, such as paper_jam events.\n * Reported under the ACTION type in the streamEvent on callbacks.\n *\n * @returns {Promise}\n * @since 2.1.0\n *\n * @see qz.printers.setPrinterCallbacks\n *\n * @param {null|string|Array} printers Printer or list of printers to listen to, null listens to all.\n * @param {Object|null} [options] Printer listener options\n * @param {null|boolean} [options.jobData=false] Flag indicating if raw spool file content should be return as well as status information (Windows only)\n * @param {null|number} [options.maxJobData=-1] Maximum number of bytes to returns for raw spooled file content (Windows only)\n * @param {null|string} [options.flavor=\"plain\"] Flavor of data format returned. Valid flavors are [base64 | hex | plain*] (Windows only)\n *\n * @memberof qz.printers\n */\n startListening: function(printers, options) {\n if (!Array.isArray(printers)) {\n printers = [printers];\n }\n var params = {\n printerNames: printers\n };\n if (options && options.jobData == true) params.jobData = true;\n if (options && options.maxJobData) params.maxJobData = options.maxJobData;\n if (options && options.flavor) params.flavor = options.flavor;\n return _qz.websocket.dataPromise('printers.startListening', params);\n },\n\n /**\n * Stop listening for printer status actions.\n *\n * @returns {Promise}\n * @since 2.1.0\n *\n * @see qz.printers.setPrinterCallbacks\n *\n * @memberof qz.printers\n */\n stopListening: function() {\n return _qz.websocket.dataPromise('printers.stopListening');\n },\n\n /**\n * Retrieve current printer status from any active listeners.\n *\n * @returns {Promise}\n * @since 2.1.0\n *\n * @see qz.printers.startListening\n *\n * @memberof qz.printers\n */\n getStatus: function() {\n return _qz.websocket.dataPromise('printers.getStatus');\n },\n\n /**\n * List of functions called for any printer status change.\n * Event data will contain {string} printerName and {string} status for all types.\n * For RECEIVE types, {Array} output (in hexadecimal format).\n * For ERROR types, {string} exception.\n * For ACTION types, {string} actionType.\n *\n * @param {Function|Array} calls Single or array of Function({Object} eventData) calls.\n * @since 2.1.0\n *\n * @memberof qz.printers\n */\n setPrinterCallbacks: function(calls) {\n _qz.printers.printerCallbacks = calls;\n }\n },\n\n /**\n * Calls related to setting up new printer configurations.\n * @namespace qz.configs\n */\n configs: {\n /**\n * Default options used by new configs if not overridden.\n * Setting a value to NULL will use the printer's default options.\n * Updating these will not update the options on any created config.\n *\n * @param {Object} options Default options used by printer configs if not overridden.\n *\n * @param {Object} [options.bounds=null] Bounding box rectangle.\n * @param {number} [options.bounds.x=0] Distance from left for bounding box starting corner\n * @param {number} [options.bounds.y=0] Distance from top for bounding box starting corner\n * @param {number} [options.bounds.width=0] Width of bounding box\n * @param {number} [options.bounds.height=0] Height of bounding box\n * @param {string} [options.colorType='color'] Valid values [color | grayscale | blackwhite]\n * @param {number} [options.copies=1] Number of copies to be printed.\n * @param {number|Array|Object|Array