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{"version":3,"file":"xterm.js","sources":["../src/xterm.js","../src/utils/Mouse.ts","../src/utils/Generic.ts","../src/utils/DomElementObjectPool.ts","../src/utils/CircularList.ts","../src/utils/CharMeasure.ts","../src/utils/BufferLine.ts","../src/utils/Browser.ts","../src/handlers/Clipboard.ts","../src/Viewport.ts","../src/SelectionModel.ts","../src/SelectionManager.ts","../src/Renderer.ts","../src/Parser.ts","../src/Linkifier.ts","../src/InputHandler.ts","../src/EventEmitter.ts","../src/EscapeSequences.ts","../src/CompositionHelper.ts","../src/Charsets.ts","../src/BufferSet.ts","../src/Buffer.ts","../node_modules/browserify/node_modules/browser-pack/_prelude.js"],"sourcesContent":["/**\n * xterm.js: xterm, in the browser\n * Originally forked from (with the author's permission):\n * Fabrice Bellard's javascript vt100 for jslinux:\n * http://bellard.org/jslinux/\n * Copyright (c) 2011 Fabrice Bellard\n * The original design remains. The terminal itself\n * has been extended to include xterm CSI codes, among\n * other features.\n * @license MIT\n */\n\nimport { BufferSet } from './BufferSet';\nimport { CompositionHelper } from './CompositionHelper';\nimport { EventEmitter } from './EventEmitter';\nimport { Viewport } from './Viewport';\nimport { rightClickHandler, moveTextAreaUnderMouseCursor, pasteHandler, copyHandler } from './handlers/Clipboard';\nimport { CircularList } from './utils/CircularList';\nimport { C0 } from './EscapeSequences';\nimport { InputHandler } from './InputHandler';\nimport { Parser } from './Parser';\nimport { Renderer } from './Renderer';\nimport { Linkifier } from './Linkifier';\nimport { SelectionManager } from './SelectionManager';\nimport { CharMeasure } from './utils/CharMeasure';\nimport * as Browser from './utils/Browser';\nimport * as Mouse from './utils/Mouse';\nimport { CHARSETS } from './Charsets';\nimport { getRawByteCoords } from './utils/Mouse';\nimport { translateBufferLineToString } from './utils/BufferLine';\n\n/**\n * Terminal Emulation References:\n * http://vt100.net/\n * http://invisible-island.net/xterm/ctlseqs/ctlseqs.txt\n * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html\n * http://invisible-island.net/vttest/\n * http://www.inwap.com/pdp10/ansicode.txt\n * http://linux.die.net/man/4/console_codes\n * http://linux.die.net/man/7/urxvt\n */\n\n// Let it work inside Node.js for automated testing purposes.\nvar document = (typeof window != 'undefined') ? window.document : null;\n\n/**\n * The amount of write requests to queue before sending an XOFF signal to the\n * pty process. This number must be small in order for ^C and similar sequences\n * to be responsive.\n */\nvar WRITE_BUFFER_PAUSE_THRESHOLD = 5;\n\n/**\n * The number of writes to perform in a single batch before allowing the\n * renderer to catch up with a 0ms setTimeout.\n */\nvar WRITE_BATCH_SIZE = 300;\n\n/**\n * The time between cursor blinks. This is driven by JS rather than a CSS\n * animation due to a bug in Chromium that causes it to use excessive CPU time.\n * See https://github.com/Microsoft/vscode/issues/22900\n */\nvar CURSOR_BLINK_INTERVAL = 600;\n\n/**\n * Terminal\n */\n\n/**\n * Creates a new `Terminal` object.\n *\n * @param {object} options An object containing a set of options, the available options are:\n * - `cursorBlink` (boolean): Whether the terminal cursor blinks\n * - `cols` (number): The number of columns of the terminal (horizontal size)\n * - `rows` (number): The number of rows of the terminal (vertical size)\n *\n * @public\n * @class Xterm Xterm\n * @alias module:xterm/src/xterm\n */\nfunction Terminal(options) {\n var self = this;\n\n if (!(this instanceof Terminal)) {\n return new Terminal(arguments[0], arguments[1], arguments[2]);\n }\n\n self.browser = Browser;\n self.cancel = Terminal.cancel;\n\n EventEmitter.call(this);\n\n if (typeof options === 'number') {\n options = {\n cols: arguments[0],\n rows: arguments[1],\n handler: arguments[2]\n };\n }\n\n options = options || {};\n\n\n Object.keys(Terminal.defaults).forEach(function(key) {\n if (options[key] == null) {\n options[key] = Terminal.options[key];\n\n if (Terminal[key] !== Terminal.defaults[key]) {\n options[key] = Terminal[key];\n }\n }\n self[key] = options[key];\n });\n\n if (options.colors.length === 8) {\n options.colors = options.colors.concat(Terminal._colors.slice(8));\n } else if (options.colors.length === 16) {\n options.colors = options.colors.concat(Terminal._colors.slice(16));\n } else if (options.colors.length === 10) {\n options.colors = options.colors.slice(0, -2).concat(\n Terminal._colors.slice(8, -2), options.colors.slice(-2));\n } else if (options.colors.length === 18) {\n options.colors = options.colors.concat(\n Terminal._colors.slice(16, -2), options.colors.slice(-2));\n }\n this.colors = options.colors;\n\n this.options = options;\n\n // this.context = options.context || window;\n // this.document = options.document || document;\n this.parent = options.body || options.parent || (\n document ? document.getElementsByTagName('body')[0] : null\n );\n\n this.cols = options.cols || options.geometry[0];\n this.rows = options.rows || options.geometry[1];\n this.geometry = [this.cols, this.rows];\n\n if (options.handler) {\n this.on('data', options.handler);\n }\n\n this.cursorState = 0;\n this.cursorHidden = false;\n this.convertEol;\n this.queue = '';\n this.customKeyEventHandler = null;\n this.cursorBlinkInterval = null;\n\n // modes\n this.applicationKeypad = false;\n this.applicationCursor = false;\n this.originMode = false;\n this.insertMode = false;\n this.wraparoundMode = true; // defaults: xterm - true, vt100 - false\n\n // charset\n this.charset = null;\n this.gcharset = null;\n this.glevel = 0;\n this.charsets = [null];\n\n // mouse properties\n this.decLocator;\n this.x10Mouse;\n this.vt200Mouse;\n this.vt300Mouse;\n this.normalMouse;\n this.mouseEvents;\n this.sendFocus;\n this.utfMouse;\n this.sgrMouse;\n this.urxvtMouse;\n\n // misc\n this.element;\n this.children;\n this.refreshStart;\n this.refreshEnd;\n this.savedX;\n this.savedY;\n this.savedCols;\n\n // stream\n this.readable = true;\n this.writable = true;\n\n this.defAttr = (0 << 18) | (257 << 9) | (256 << 0);\n this.curAttr = this.defAttr;\n\n this.params = [];\n this.currentParam = 0;\n this.prefix = '';\n this.postfix = '';\n\n this.inputHandler = new InputHandler(this);\n this.parser = new Parser(this.inputHandler, this);\n // Reuse renderer if the Terminal is being recreated via a Terminal.reset call.\n this.renderer = this.renderer || null;\n this.selectionManager = this.selectionManager || null;\n this.linkifier = this.linkifier || new Linkifier();\n\n // user input states\n this.writeBuffer = [];\n this.writeInProgress = false;\n\n /**\n * Whether _xterm.js_ sent XOFF in order to catch up with the pty process.\n * This is a distinct state from writeStopped so that if the user requested\n * XOFF via ^S that it will not automatically resume when the writeBuffer goes\n * below threshold.\n */\n this.xoffSentToCatchUp = false;\n\n /** Whether writing has been stopped as a result of XOFF */\n this.writeStopped = false;\n\n // leftover surrogate high from previous write invocation\n this.surrogate_high = '';\n\n // Create the terminal's buffers and set the current buffer\n this.buffers = new BufferSet(this);\n this.buffer = this.buffers.active; // Convenience shortcut;\n this.buffers.on('activate', function (buffer) {\n this._terminal.buffer = buffer;\n });\n\n // Ensure the selection manager has the correct buffer\n if (this.selectionManager) {\n this.selectionManager.setBuffer(this.buffer.lines);\n }\n\n this.setupStops();\n\n // Store if user went browsing history in scrollback\n this.userScrolling = false;\n}\n\ninherits(Terminal, EventEmitter);\n\n/**\n * back_color_erase feature for xterm.\n */\nTerminal.prototype.eraseAttr = function() {\n // if (this.is('screen')) return this.defAttr;\n return (this.defAttr & ~0x1ff) | (this.curAttr & 0x1ff);\n};\n\n/**\n * Colors\n */\n\n// Colors 0-15\nTerminal.tangoColors = [\n // dark:\n '#2e3436',\n '#cc0000',\n '#4e9a06',\n '#c4a000',\n '#3465a4',\n '#75507b',\n '#06989a',\n '#d3d7cf',\n // bright:\n '#555753',\n '#ef2929',\n '#8ae234',\n '#fce94f',\n '#729fcf',\n '#ad7fa8',\n '#34e2e2',\n '#eeeeec'\n];\n\n// Colors 0-15 + 16-255\n// Much thanks to TooTallNate for writing this.\nTerminal.colors = (function() {\n var colors = Terminal.tangoColors.slice()\n , r = [0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff]\n , i;\n\n // 16-231\n i = 0;\n for (; i < 216; i++) {\n out(r[(i / 36) % 6 | 0], r[(i / 6) % 6 | 0], r[i % 6]);\n }\n\n // 232-255 (grey)\n i = 0;\n for (; i < 24; i++) {\n r = 8 + i * 10;\n out(r, r, r);\n }\n\n function out(r, g, b) {\n colors.push('#' + hex(r) + hex(g) + hex(b));\n }\n\n function hex(c) {\n c = c.toString(16);\n return c.length < 2 ? '0' + c : c;\n }\n\n return colors;\n})();\n\nTerminal._colors = Terminal.colors.slice();\n\nTerminal.vcolors = (function() {\n var out = []\n , colors = Terminal.colors\n , i = 0\n , color;\n\n for (; i < 256; i++) {\n color = parseInt(colors[i].substring(1), 16);\n out.push([\n (color >> 16) & 0xff,\n (color >> 8) & 0xff,\n color & 0xff\n ]);\n }\n\n return out;\n})();\n\n/**\n * Options\n */\n\nTerminal.defaults = {\n colors: Terminal.colors,\n theme: 'default',\n convertEol: false,\n termName: 'xterm',\n geometry: [80, 24],\n cursorBlink: false,\n cursorStyle: 'block',\n visualBell: false,\n popOnBell: false,\n scrollback: 1000,\n screenKeys: false,\n debug: false,\n cancelEvents: false,\n disableStdin: false,\n useFlowControl: false,\n tabStopWidth: 8\n // programFeatures: false,\n // focusKeys: false,\n};\n\nTerminal.options = {};\n\nTerminal.focus = null;\n\neach(keys(Terminal.defaults), function(key) {\n Terminal[key] = Terminal.defaults[key];\n Terminal.options[key] = Terminal.defaults[key];\n});\n\n/**\n * Focus the terminal. Delegates focus handling to the terminal's DOM element.\n */\nTerminal.prototype.focus = function() {\n return this.textarea.focus();\n};\n\n/**\n * Retrieves an option's value from the terminal.\n * @param {string} key The option key.\n */\nTerminal.prototype.getOption = function(key) {\n if (!(key in Terminal.defaults)) {\n throw new Error('No option with key \"' + key + '\"');\n }\n\n if (typeof this.options[key] !== 'undefined') {\n return this.options[key];\n }\n\n return this[key];\n};\n\n/**\n * Sets an option on the terminal.\n * @param {string} key The option key.\n * @param {string} value The option value.\n */\nTerminal.prototype.setOption = function(key, value) {\n if (!(key in Terminal.defaults)) {\n throw new Error('No option with key \"' + key + '\"');\n }\n switch (key) {\n case 'scrollback':\n if (value < this.rows) {\n let msg = 'Setting the scrollback value less than the number of rows ';\n\n msg += `(${this.rows}) is not allowed.`;\n\n console.warn(msg);\n return false;\n }\n\n if (this.options[key] !== value) {\n if (this.buffer.lines.length > value) {\n const amountToTrim = this.buffer.lines.length - value;\n const needsRefresh = (this.buffer.ydisp - amountToTrim < 0);\n this.buffer.lines.trimStart(amountToTrim);\n this.buffer.ybase = Math.max(this.buffer.ybase - amountToTrim, 0);\n this.buffer.ydisp = Math.max(this.buffer.ydisp - amountToTrim, 0);\n if (needsRefresh) {\n this.refresh(0, this.rows - 1);\n }\n }\n this.buffer.lines.maxLength = value;\n this.viewport.syncScrollArea();\n }\n break;\n }\n this[key] = value;\n this.options[key] = value;\n switch (key) {\n case 'cursorBlink': this.setCursorBlinking(value); break;\n case 'cursorStyle':\n this.element.classList.toggle(`xterm-cursor-style-block`, value === 'block');\n this.element.classList.toggle(`xterm-cursor-style-underline`, value === 'underline');\n this.element.classList.toggle(`xterm-cursor-style-bar`, value === 'bar');\n break;\n case 'tabStopWidth': this.setupStops(); break;\n }\n};\n\nTerminal.prototype.restartCursorBlinking = function () {\n this.setCursorBlinking(this.options.cursorBlink);\n};\n\nTerminal.prototype.setCursorBlinking = function (enabled) {\n this.element.classList.toggle('xterm-cursor-blink', enabled);\n this.clearCursorBlinkingInterval();\n if (enabled) {\n var self = this;\n this.cursorBlinkInterval = setInterval(function () {\n self.element.classList.toggle('xterm-cursor-blink-on');\n }, CURSOR_BLINK_INTERVAL);\n }\n};\n\nTerminal.prototype.clearCursorBlinkingInterval = function () {\n this.element.classList.remove('xterm-cursor-blink-on');\n if (this.cursorBlinkInterval) {\n clearInterval(this.cursorBlinkInterval);\n this.cursorBlinkInterval = null;\n }\n};\n\n/**\n * Binds the desired focus behavior on a given terminal object.\n *\n * @static\n */\nTerminal.bindFocus = function (term) {\n on(term.textarea, 'focus', function (ev) {\n if (term.sendFocus) {\n term.send(C0.ESC + '[I');\n }\n term.element.classList.add('focus');\n term.showCursor();\n term.restartCursorBlinking.apply(term);\n Terminal.focus = term;\n term.emit('focus', {terminal: term});\n });\n};\n\n/**\n * Blur the terminal. Delegates blur handling to the terminal's DOM element.\n */\nTerminal.prototype.blur = function() {\n return this.textarea.blur();\n};\n\n/**\n * Binds the desired blur behavior on a given terminal object.\n *\n * @static\n */\nTerminal.bindBlur = function (term) {\n on(term.textarea, 'blur', function (ev) {\n term.refresh(term.buffer.y, term.buffer.y);\n if (term.sendFocus) {\n term.send(C0.ESC + '[O');\n }\n term.element.classList.remove('focus');\n term.clearCursorBlinkingInterval.apply(term);\n Terminal.focus = null;\n term.emit('blur', {terminal: term});\n });\n};\n\n/**\n * Initialize default behavior\n */\nTerminal.prototype.initGlobal = function() {\n var term = this;\n\n Terminal.bindKeys(this);\n Terminal.bindFocus(this);\n Terminal.bindBlur(this);\n\n // Bind clipboard functionality\n on(this.element, 'copy', event => {\n // If mouse events are active it means the selection manager is disabled and\n // copy should be handled by the host program.\n if (!term.hasSelection()) {\n return;\n }\n copyHandler(event, term, this.selectionManager);\n });\n const pasteHandlerWrapper = event => pasteHandler(event, term);\n on(this.textarea, 'paste', pasteHandlerWrapper);\n on(this.element, 'paste', pasteHandlerWrapper);\n\n // Handle right click context menus\n if (term.browser.isFirefox) {\n // Firefox doesn't appear to fire the contextmenu event on right click\n on(this.element, 'mousedown', event => {\n if (event.button == 2) {\n rightClickHandler(event, this.textarea, this.selectionManager);\n }\n });\n } else {\n on(this.element, 'contextmenu', event => {\n rightClickHandler(event, this.textarea, this.selectionManager);\n });\n }\n\n // Move the textarea under the cursor when middle clicking on Linux to ensure\n // middle click to paste selection works. This only appears to work in Chrome\n // at the time is writing.\n if (term.browser.isLinux) {\n // Use auxclick event over mousedown the latter doesn't seem to work. Note\n // that the regular click event doesn't fire for the middle mouse button.\n on(this.element, 'auxclick', event => {\n if (event.button === 1) {\n moveTextAreaUnderMouseCursor(event, this.textarea, this.selectionManager);\n }\n });\n }\n};\n\n/**\n * Apply key handling to the terminal\n */\nTerminal.bindKeys = function(term) {\n on(term.element, 'keydown', function(ev) {\n if (document.activeElement != this) {\n return;\n }\n term.keyDown(ev);\n }, true);\n\n on(term.element, 'keypress', function(ev) {\n if (document.activeElement != this) {\n return;\n }\n term.keyPress(ev);\n }, true);\n\n on(term.element, 'keyup', function(ev) {\n if (!wasMondifierKeyOnlyEvent(ev)) {\n term.focus(term);\n }\n }, true);\n\n on(term.textarea, 'keydown', function(ev) {\n term.keyDown(ev);\n }, true);\n\n on(term.textarea, 'keypress', function(ev) {\n term.keyPress(ev);\n // Truncate the textarea's value, since it is not needed\n this.value = '';\n }, true);\n\n on(term.textarea, 'compositionstart', term.compositionHelper.compositionstart.bind(term.compositionHelper));\n on(term.textarea, 'compositionupdate', term.compositionHelper.compositionupdate.bind(term.compositionHelper));\n on(term.textarea, 'compositionend', term.compositionHelper.compositionend.bind(term.compositionHelper));\n term.on('refresh', term.compositionHelper.updateCompositionElements.bind(term.compositionHelper));\n term.on('refresh', function (data) {\n term.queueLinkification(data.start, data.end)\n });\n};\n\n\n/**\n * Insert the given row to the terminal or produce a new one\n * if no row argument is passed. Return the inserted row.\n * @param {HTMLElement} row (optional) The row to append to the terminal.\n */\nTerminal.prototype.insertRow = function (row) {\n if (typeof row != 'object') {\n row = document.createElement('div');\n }\n\n this.rowContainer.appendChild(row);\n this.children.push(row);\n\n return row;\n};\n\n/**\n * Opens the terminal within an element.\n *\n * @param {HTMLElement} parent The element to create the terminal within.\n * @param {boolean} focus Focus the terminal, after it gets instantiated in the DOM\n */\nTerminal.prototype.open = function(parent, focus) {\n var self=this, i=0, div;\n\n this.parent = parent || this.parent;\n\n if (!this.parent) {\n throw new Error('Terminal requires a parent element.');\n }\n\n // Grab global elements\n this.context = this.parent.ownerDocument.defaultView;\n this.document = this.parent.ownerDocument;\n this.body = this.document.getElementsByTagName('body')[0];\n\n //Create main element container\n this.element = this.document.createElement('div');\n this.element.classList.add('terminal');\n this.element.classList.add('xterm');\n this.element.classList.add('xterm-theme-' + this.theme);\n this.element.classList.add(`xterm-cursor-style-${this.options.cursorStyle}`);\n this.setCursorBlinking(this.options.cursorBlink);\n\n this.element.setAttribute('tabindex', 0);\n\n this.viewportElement = document.createElement('div');\n this.viewportElement.classList.add('xterm-viewport');\n this.element.appendChild(this.viewportElement);\n this.viewportScrollArea = document.createElement('div');\n this.viewportScrollArea.classList.add('xterm-scroll-area');\n this.viewportElement.appendChild(this.viewportScrollArea);\n\n // Create the selection container.\n this.selectionContainer = document.createElement('div');\n this.selectionContainer.classList.add('xterm-selection');\n this.element.appendChild(this.selectionContainer);\n\n // Create the container that will hold the lines of the terminal and then\n // produce the lines the lines.\n this.rowContainer = document.createElement('div');\n this.rowContainer.classList.add('xterm-rows');\n this.element.appendChild(this.rowContainer);\n this.children = [];\n this.linkifier.attachToDom(document, this.children);\n\n // Create the container that will hold helpers like the textarea for\n // capturing DOM Events. Then produce the helpers.\n this.helperContainer = document.createElement('div');\n this.helperContainer.classList.add('xterm-helpers');\n // TODO: This should probably be inserted once it's filled to prevent an additional layout\n this.element.appendChild(this.helperContainer);\n this.textarea = document.createElement('textarea');\n this.textarea.classList.add('xterm-helper-textarea');\n this.textarea.setAttribute('autocorrect', 'off');\n this.textarea.setAttribute('autocapitalize', 'off');\n this.textarea.setAttribute('spellcheck', 'false');\n this.textarea.tabIndex = 0;\n this.textarea.addEventListener('focus', function() {\n self.emit('focus', {terminal: self});\n });\n this.textarea.addEventListener('blur', function() {\n self.emit('blur', {terminal: self});\n });\n this.helperContainer.appendChild(this.textarea);\n\n this.compositionView = document.createElement('div');\n this.compositionView.classList.add('composition-view');\n this.compositionHelper = new CompositionHelper(this.textarea, this.compositionView, this);\n this.helperContainer.appendChild(this.compositionView);\n\n this.charSizeStyleElement = document.createElement('style');\n this.helperContainer.appendChild(this.charSizeStyleElement);\n\n for (; i < this.rows; i++) {\n this.insertRow();\n }\n this.parent.appendChild(this.element);\n\n this.charMeasure = new CharMeasure(document, this.helperContainer);\n this.charMeasure.on('charsizechanged', function () {\n self.updateCharSizeStyles();\n });\n this.charMeasure.measure();\n\n this.viewport = new Viewport(this, this.viewportElement, this.viewportScrollArea, this.charMeasure);\n this.renderer = new Renderer(this);\n this.selectionManager = new SelectionManager(\n this, this.buffer.lines, this.rowContainer, this.charMeasure\n );\n this.selectionManager.on('refresh', data => {\n this.renderer.refreshSelection(data.start, data.end);\n });\n this.selectionManager.on('newselection', text => {\n // If there's a new selection, put it into the textarea, focus and select it\n // in order to register it as a selection on the OS. This event is fired\n // only on Linux to enable middle click to paste selection.\n this.textarea.value = text;\n this.textarea.focus();\n this.textarea.select();\n });\n this.on('scroll', () => this.selectionManager.refresh());\n this.viewportElement.addEventListener('scroll', () => this.selectionManager.refresh());\n\n // Setup loop that draws to screen\n this.refresh(0, this.rows - 1);\n\n // Initialize global actions that\n // need to be taken on the document.\n this.initGlobal();\n\n /**\n * Automatic focus functionality.\n * TODO: Default to `false` starting with xterm.js 3.0.\n */\n if (typeof focus == 'undefined') {\n let message = 'You did not pass the `focus` argument in `Terminal.prototype.open()`.\\n';\n\n message += 'The `focus` argument now defaults to `true` but starting with xterm.js 3.0 ';\n message += 'it will default to `false`.';\n\n console.warn(message);\n focus = true;\n }\n\n if (focus) {\n this.focus();\n }\n\n // Listen for mouse events and translate\n // them into terminal mouse protocols.\n this.bindMouse();\n\n /**\n * This event is emitted when terminal has completed opening.\n *\n * @event open\n */\n this.emit('open');\n};\n\n\n/**\n * Attempts to load an add-on using CommonJS or RequireJS (whichever is available).\n * @param {string} addon The name of the addon to load\n * @static\n */\nTerminal.loadAddon = function(addon, callback) {\n if (typeof exports === 'object' && typeof module === 'object') {\n // CommonJS\n return require('./addons/' + addon + '/' + addon);\n } else if (typeof define == 'function') {\n // RequireJS\n return require(['./addons/' + addon + '/' + addon], callback);\n } else {\n console.error('Cannot load a module without a CommonJS or RequireJS environment.');\n return false;\n }\n};\n\n/**\n * Updates the helper CSS class with any changes necessary after the terminal's\n * character width has been changed.\n */\nTerminal.prototype.updateCharSizeStyles = function() {\n this.charSizeStyleElement.textContent =\n `.xterm-wide-char{width:${this.charMeasure.width * 2}px;}` +\n `.xterm-normal-char{width:${this.charMeasure.width}px;}` +\n `.xterm-rows > div{height:${this.charMeasure.height}px;}`;\n}\n\n/**\n * XTerm mouse events\n * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking\n * To better understand these\n * the xterm code is very helpful:\n * Relevant files:\n * button.c, charproc.c, misc.c\n * Relevant functions in xterm/button.c:\n * BtnCode, EmitButtonCode, EditorButton, SendMousePosition\n */\nTerminal.prototype.bindMouse = function() {\n var el = this.element, self = this, pressed = 32;\n\n // mouseup, mousedown, wheel\n // left click: ^[[M 3<^[[M#3<\n // wheel up: ^[[M`3>\n function sendButton(ev) {\n var button\n , pos;\n\n // get the xterm-style button\n button = getButton(ev);\n\n // get mouse coordinates\n pos = getRawByteCoords(ev, self.rowContainer, self.charMeasure, self.cols, self.rows);\n if (!pos) return;\n\n sendEvent(button, pos);\n\n switch (ev.overrideType || ev.type) {\n case 'mousedown':\n pressed = button;\n break;\n case 'mouseup':\n // keep it at the left\n // button, just in case.\n pressed = 32;\n break;\n case 'wheel':\n // nothing. don't\n // interfere with\n // `pressed`.\n break;\n }\n }\n\n // motion example of a left click:\n // ^[[M 3<^[[M@4<^[[M@5<^[[M@6<^[[M@7<^[[M#7<\n function sendMove(ev) {\n var button = pressed\n , pos;\n\n pos = getRawByteCoords(ev, self.rowContainer, self.charMeasure, self.cols, self.rows);\n if (!pos) return;\n\n // buttons marked as motions\n // are incremented by 32\n button += 32;\n\n sendEvent(button, pos);\n }\n\n // encode button and\n // position to characters\n function encode(data, ch) {\n if (!self.utfMouse) {\n if (ch === 255) return data.push(0);\n if (ch > 127) ch = 127;\n data.push(ch);\n } else {\n if (ch === 2047) return data.push(0);\n if (ch < 127) {\n data.push(ch);\n } else {\n if (ch > 2047) ch = 2047;\n data.push(0xC0 | (ch >> 6));\n data.push(0x80 | (ch & 0x3F));\n }\n }\n }\n\n // send a mouse event:\n // regular/utf8: ^[[M Cb Cx Cy\n // urxvt: ^[[ Cb ; Cx ; Cy M\n // sgr: ^[[ Cb ; Cx ; Cy M/m\n // vt300: ^[[ 24(1/3/5)~ [ Cx , Cy ] \\r\n // locator: CSI P e ; P b ; P r ; P c ; P p & w\n function sendEvent(button, pos) {\n // self.emit('mouse', {\n // x: pos.x - 32,\n // y: pos.x - 32,\n // button: button\n // });\n\n if (self.vt300Mouse) {\n // NOTE: Unstable.\n // http://www.vt100.net/docs/vt3xx-gp/chapter15.html\n button &= 3;\n pos.x -= 32;\n pos.y -= 32;\n var data = C0.ESC + '[24';\n if (button === 0) data += '1';\n else if (button === 1) data += '3';\n else if (button === 2) data += '5';\n else if (button === 3) return;\n else data += '0';\n data += '~[' + pos.x + ',' + pos.y + ']\\r';\n self.send(data);\n return;\n }\n\n if (self.decLocator) {\n // NOTE: Unstable.\n button &= 3;\n pos.x -= 32;\n pos.y -= 32;\n if (button === 0) button = 2;\n else if (button === 1) button = 4;\n else if (button === 2) button = 6;\n else if (button === 3) button = 3;\n self.send(C0.ESC + '['\n + button\n + ';'\n + (button === 3 ? 4 : 0)\n + ';'\n + pos.y\n + ';'\n + pos.x\n + ';'\n + (pos.page || 0)\n + '&w');\n return;\n }\n\n if (self.urxvtMouse) {\n pos.x -= 32;\n pos.y -= 32;\n pos.x++;\n pos.y++;\n self.send(C0.ESC + '[' + button + ';' + pos.x + ';' + pos.y + 'M');\n return;\n }\n\n if (self.sgrMouse) {\n pos.x -= 32;\n pos.y -= 32;\n self.send(C0.ESC + '[<'\n + (((button & 3) === 3 ? button & ~3 : button) - 32)\n + ';'\n + pos.x\n + ';'\n + pos.y\n + ((button & 3) === 3 ? 'm' : 'M'));\n return;\n }\n\n var data = [];\n\n encode(data, button);\n encode(data, pos.x);\n encode(data, pos.y);\n\n self.send(C0.ESC + '[M' + String.fromCharCode.apply(String, data));\n }\n\n function getButton(ev) {\n var button\n , shift\n , meta\n , ctrl\n , mod;\n\n // two low bits:\n // 0 = left\n // 1 = middle\n // 2 = right\n // 3 = release\n // wheel up/down:\n // 1, and 2 - with 64 added\n switch (ev.overrideType || ev.type) {\n case 'mousedown':\n button = ev.button != null\n ? +ev.button\n : ev.which != null\n ? ev.which - 1\n : null;\n\n if (self.browser.isMSIE) {\n button = button === 1 ? 0 : button === 4 ? 1 : button;\n }\n break;\n case 'mouseup':\n button = 3;\n break;\n case 'DOMMouseScroll':\n button = ev.detail < 0\n ? 64\n : 65;\n break;\n case 'wheel':\n button = ev.wheelDeltaY > 0\n ? 64\n : 65;\n break;\n }\n\n // next three bits are the modifiers:\n // 4 = shift, 8 = meta, 16 = control\n shift = ev.shiftKey ? 4 : 0;\n meta = ev.metaKey ? 8 : 0;\n ctrl = ev.ctrlKey ? 16 : 0;\n mod = shift | meta | ctrl;\n\n // no mods\n if (self.vt200Mouse) {\n // ctrl only\n mod &= ctrl;\n } else if (!self.normalMouse) {\n mod = 0;\n }\n\n // increment to SP\n button = (32 + (mod << 2)) + button;\n\n return button;\n }\n\n on(el, 'mousedown', function(ev) {\n\n // Prevent the focus on the textarea from getting lost\n // and make sure we get focused on mousedown\n ev.preventDefault();\n self.focus();\n\n if (!self.mouseEvents) return;\n\n // send the button\n sendButton(ev);\n\n // fix for odd bug\n //if (self.vt200Mouse && !self.normalMouse) {\n if (self.vt200Mouse) {\n ev.overrideType = 'mouseup';\n sendButton(ev);\n return self.cancel(ev);\n }\n\n // bind events\n if (self.normalMouse) on(self.document, 'mousemove', sendMove);\n\n // x10 compatibility mode can't send button releases\n if (!self.x10Mouse) {\n on(self.document, 'mouseup', function up(ev) {\n sendButton(ev);\n if (self.normalMouse) off(self.document, 'mousemove', sendMove);\n off(self.document, 'mouseup', up);\n return self.cancel(ev);\n });\n }\n\n return self.cancel(ev);\n });\n\n //if (self.normalMouse) {\n // on(self.document, 'mousemove', sendMove);\n //}\n\n on(el, 'wheel', function(ev) {\n if (!self.mouseEvents) return;\n if (self.x10Mouse\n || self.vt300Mouse\n || self.decLocator) return;\n sendButton(ev);\n return self.cancel(ev);\n });\n\n // allow wheel scrolling in\n // the shell for example\n on(el, 'wheel', function(ev) {\n if (self.mouseEvents) return;\n self.viewport.onWheel(ev);\n return self.cancel(ev);\n });\n\n on(el, 'touchstart', function(ev) {\n if (self.mouseEvents) return;\n self.viewport.onTouchStart(ev);\n return self.cancel(ev);\n });\n\n on(el, 'touchmove', function(ev) {\n if (self.mouseEvents) return;\n self.viewport.onTouchMove(ev);\n return self.cancel(ev);\n });\n};\n\n/**\n * Destroys the terminal.\n */\nTerminal.prototype.destroy = function() {\n this.readable = false;\n this.writable = false;\n this._events = {};\n this.handler = function() {};\n this.write = function() {};\n if (this.element && this.element.parentNode) {\n this.element.parentNode.removeChild(this.element);\n }\n //this.emit('close');\n};\n\n/**\n * Tells the renderer to refresh terminal content between two rows (inclusive) at the next\n * opportunity.\n * @param {number} start The row to start from (between 0 and this.rows - 1).\n * @param {number} end The row to end at (between start and this.rows - 1).\n */\nTerminal.prototype.refresh = function(start, end) {\n if (this.renderer) {\n this.renderer.queueRefresh(start, end);\n }\n};\n\n/**\n * Queues linkification for the specified rows.\n * @param {number} start The row to start from (between 0 and this.rows - 1).\n * @param {number} end The row to end at (between start and this.rows - 1).\n */\nTerminal.prototype.queueLinkification = function(start, end) {\n if (this.linkifier) {\n for (let i = start; i <= end; i++) {\n this.linkifier.linkifyRow(i);\n }\n }\n};\n\n/**\n * Display the cursor element\n */\nTerminal.prototype.showCursor = function() {\n if (!this.cursorState) {\n this.cursorState = 1;\n this.refresh(this.buffer.y, this.buffer.y);\n }\n};\n\n/**\n * Scroll the terminal down 1 row, creating a blank line.\n * @param {boolean} isWrapped Whether the new line is wrapped from the previous\n * line.\n */\nTerminal.prototype.scroll = function(isWrapped) {\n var row;\n\n // Make room for the new row in lines\n if (this.buffer.lines.length === this.buffer.lines.maxLength) {\n this.buffer.lines.trimStart(1);\n this.buffer.ybase--;\n if (this.buffer.ydisp !== 0) {\n this.buffer.ydisp--;\n }\n }\n\n this.buffer.ybase++;\n\n // TODO: Why is this done twice?\n if (!this.userScrolling) {\n this.buffer.ydisp = this.buffer.ybase;\n }\n\n // last line\n row = this.buffer.ybase + this.rows - 1;\n\n // subtract the bottom scroll region\n row -= this.rows - 1 - this.buffer.scrollBottom;\n\n if (row === this.buffer.lines.length) {\n // Optimization: pushing is faster than splicing when they amount to the same behavior\n this.buffer.lines.push(this.blankLine(undefined, isWrapped));\n } else {\n // add our new line\n this.buffer.lines.splice(row, 0, this.blankLine(undefined, isWrapped));\n }\n\n if (this.buffer.scrollTop !== 0) {\n if (this.buffer.ybase !== 0) {\n this.buffer.ybase--;\n if (!this.userScrolling) {\n this.buffer.ydisp = this.buffer.ybase;\n }\n }\n this.buffer.lines.splice(this.buffer.ybase + this.buffer.scrollTop, 1);\n }\n\n // this.maxRange();\n this.updateRange(this.buffer.scrollTop);\n this.updateRange(this.buffer.scrollBottom);\n\n /**\n * This event is emitted whenever the terminal is scrolled.\n * The one parameter passed is the new y display position.\n *\n * @event scroll\n */\n this.emit('scroll', this.buffer.ydisp);\n};\n\n/**\n * Scroll the display of the terminal\n * @param {number} disp The number of lines to scroll down (negatives scroll up).\n * @param {boolean} suppressScrollEvent Don't emit the scroll event as scrollDisp. This is used\n * to avoid unwanted events being handled by the veiwport when the event was triggered from the\n * viewport originally.\n */\nTerminal.prototype.scrollDisp = function(disp, suppressScrollEvent) {\n if (disp < 0) {\n if (this.buffer.ydisp === 0) {\n return;\n }\n this.userScrolling = true;\n } else if (disp + this.buffer.ydisp >= this.buffer.ybase) {\n this.userScrolling = false;\n }\n\n const oldYdisp = this.buffer.ydisp;\n this.buffer.ydisp = Math.max(Math.min(this.buffer.ydisp + disp, this.buffer.ybase), 0);\n\n // No change occurred, don't trigger scroll/refresh\n if (oldYdisp === this.buffer.ydisp) {\n return;\n }\n\n if (!suppressScrollEvent) {\n this.emit('scroll', this.buffer.ydisp);\n }\n\n this.refresh(0, this.rows - 1);\n};\n\n/**\n * Scroll the display of the terminal by a number of pages.\n * @param {number} pageCount The number of pages to scroll (negative scrolls up).\n */\nTerminal.prototype.scrollPages = function(pageCount) {\n this.scrollDisp(pageCount * (this.rows - 1));\n};\n\n/**\n * Scrolls the display of the terminal to the top.\n */\nTerminal.prototype.scrollToTop = function() {\n this.scrollDisp(-this.buffer.ydisp);\n};\n\n/**\n * Scrolls the display of the terminal to the bottom.\n */\nTerminal.prototype.scrollToBottom = function() {\n this.scrollDisp(this.buffer.ybase - this.buffer.ydisp);\n};\n\n/**\n * Writes text to the terminal.\n * @param {string} data The text to write to the terminal.\n */\nTerminal.prototype.write = function(data) {\n this.writeBuffer.push(data);\n\n // Send XOFF to pause the pty process if the write buffer becomes too large so\n // xterm.js can catch up before more data is sent. This is necessary in order\n // to keep signals such as ^C responsive.\n if (this.options.useFlowControl && !this.xoffSentToCatchUp && this.writeBuffer.length >= WRITE_BUFFER_PAUSE_THRESHOLD) {\n // XOFF - stop pty pipe\n // XON will be triggered by emulator before processing data chunk\n this.send(C0.DC3);\n this.xoffSentToCatchUp = true;\n }\n\n if (!this.writeInProgress && this.writeBuffer.length > 0) {\n // Kick off a write which will write all data in sequence recursively\n this.writeInProgress = true;\n // Kick off an async innerWrite so more writes can come in while processing data\n var self = this;\n setTimeout(function () {\n self.innerWrite();\n });\n }\n};\n\nTerminal.prototype.innerWrite = function() {\n var writeBatch = this.writeBuffer.splice(0, WRITE_BATCH_SIZE);\n while (writeBatch.length > 0) {\n var data = writeBatch.shift();\n var l = data.length, i = 0, j, cs, ch, code, low, ch_width, row;\n\n // If XOFF was sent in order to catch up with the pty process, resume it if\n // the writeBuffer is empty to allow more data to come in.\n if (this.xoffSentToCatchUp && writeBatch.length === 0 && this.writeBuffer.length === 0) {\n this.send(C0.DC1);\n this.xoffSentToCatchUp = false;\n }\n\n this.refreshStart = this.buffer.y;\n this.refreshEnd = this.buffer.y;\n\n // HACK: Set the parser state based on it's state at the time of return.\n // This works around the bug #662 which saw the parser state reset in the\n // middle of parsing escape sequence in two chunks. For some reason the\n // state of the parser resets to 0 after exiting parser.parse. This change\n // just sets the state back based on the correct return statement.\n var state = this.parser.parse(data);\n this.parser.setState(state);\n\n this.updateRange(this.buffer.y);\n this.refresh(this.refreshStart, this.refreshEnd);\n }\n if (this.writeBuffer.length > 0) {\n // Allow renderer to catch up before processing the next batch\n var self = this;\n setTimeout(function () {\n self.innerWrite();\n }, 0);\n } else {\n this.writeInProgress = false;\n }\n};\n\n/**\n * Writes text to the terminal, followed by a break line character (\\n).\n * @param {string} data The text to write to the terminal.\n */\nTerminal.prototype.writeln = function(data) {\n this.write(data + '\\r\\n');\n};\n\n/**\n * DEPRECATED: only for backward compatibility. Please use attachCustomKeyEventHandler() instead.\n * @param {function} customKeydownHandler The custom KeyboardEvent handler to attach. This is a\n * function that takes a KeyboardEvent, allowing consumers to stop propogation and/or prevent\n * the default action. The function returns whether the event should be processed by xterm.js.\n */\nTerminal.prototype.attachCustomKeydownHandler = function(customKeydownHandler) {\n let message = 'attachCustomKeydownHandler() is DEPRECATED and will be removed soon. Please use attachCustomKeyEventHandler() instead.';\n console.warn(message);\n this.attachCustomKeyEventHandler(customKeydownHandler);\n};\n\n/**\n * Attaches a custom key event handler which is run before keys are processed, giving consumers of\n * xterm.js ultimate control as to what keys should be processed by the terminal and what keys\n * should not.\n * @param {function} customKeyEventHandler The custom KeyboardEvent handler to attach. This is a\n * function that takes a KeyboardEvent, allowing consumers to stop propogation and/or prevent\n * the default action. The function returns whether the event should be processed by xterm.js.\n */\nTerminal.prototype.attachCustomKeyEventHandler = function(customKeyEventHandler) {\n this.customKeyEventHandler = customKeyEventHandler;\n};\n\n/**\n * Attaches a http(s) link handler, forcing web links to behave differently to\n * regular <a> tags. This will trigger a refresh as links potentially need to be\n * reconstructed. Calling this with null will remove the handler.\n * @param {LinkMatcherHandler} handler The handler callback function.\n */\nTerminal.prototype.setHypertextLinkHandler = function(handler) {\n if (!this.linkifier) {\n throw new Error('Cannot attach a hypertext link handler before Terminal.open is called');\n }\n this.linkifier.setHypertextLinkHandler(handler);\n // Refresh to force links to refresh\n this.refresh(0, this.rows - 1);\n};\n\n/**\n * Attaches a validation callback for hypertext links. This is useful to use\n * validation logic or to do something with the link's element and url.\n * @param {LinkMatcherValidationCallback} callback The callback to use, this can\n * be cleared with null.\n */\nTerminal.prototype.setHypertextValidationCallback = function(callback) {\n if (!this.linkifier) {\n throw new Error('Cannot attach a hypertext validation callback before Terminal.open is called');\n }\n this.linkifier.setHypertextValidationCallback(callback);\n // Refresh to force links to refresh\n this.refresh(0, this.rows - 1);\n};\n\n/**\n * Registers a link matcher, allowing custom link patterns to be matched and\n * handled.\n * @param {RegExp} regex The regular expression to search for, specifically\n * this searches the textContent of the rows. You will want to use \\s to match\n * a space ' ' character for example.\n * @param {LinkMatcherHandler} handler The callback when the link is called.\n * @param {LinkMatcherOptions} [options] Options for the link matcher.\n * @return {number} The ID of the new matcher, this can be used to deregister.\n */\nTerminal.prototype.registerLinkMatcher = function(regex, handler, options) {\n if (this.linkifier) {\n var matcherId = this.linkifier.registerLinkMatcher(regex, handler, options);\n this.refresh(0, this.rows - 1);\n return matcherId;\n }\n};\n\n/**\n * Deregisters a link matcher if it has been registered.\n * @param {number} matcherId The link matcher's ID (returned after register)\n */\nTerminal.prototype.deregisterLinkMatcher = function(matcherId) {\n if (this.linkifier) {\n if (this.linkifier.deregisterLinkMatcher(matcherId)) {\n this.refresh(0, this.rows - 1);\n }\n }\n};\n\n/**\n * Gets whether the terminal has an active selection.\n */\nTerminal.prototype.hasSelection = function() {\n return this.selectionManager ? this.selectionManager.hasSelection : false;\n};\n\n/**\n * Gets the terminal's current selection, this is useful for implementing copy\n * behavior outside of xterm.js.\n */\nTerminal.prototype.getSelection = function() {\n return this.selectionManager ? this.selectionManager.selectionText : '';\n};\n\n/**\n * Clears the current terminal selection.\n */\nTerminal.prototype.clearSelection = function() {\n if (this.selectionManager) {\n this.selectionManager.clearSelection();\n }\n};\n\n/**\n * Selects all text within the terminal.\n */\nTerminal.prototype.selectAll = function() {\n if (this.selectionManager) {\n this.selectionManager.selectAll();\n }\n};\n\n/**\n * Handle a keydown event\n * Key Resources:\n * - https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent\n * @param {KeyboardEvent} ev The keydown event to be handled.\n */\nTerminal.prototype.keyDown = function(ev) {\n if (this.customKeyEventHandler && this.customKeyEventHandler(ev) === false) {\n return false;\n }\n\n this.restartCursorBlinking();\n\n if (!this.compositionHelper.keydown.bind(this.compositionHelper)(ev)) {\n if (this.buffer.ybase !== this.buffer.ydisp) {\n this.scrollToBottom();\n }\n return false;\n }\n\n var self = this;\n var result = this.evaluateKeyEscapeSequence(ev);\n\n if (result.key === C0.DC3) { // XOFF\n this.writeStopped = true;\n } else if (result.key === C0.DC1) { // XON\n this.writeStopped = false;\n }\n\n if (result.scrollDisp) {\n this.scrollDisp(result.scrollDisp);\n return this.cancel(ev, true);\n }\n\n if (isThirdLevelShift(this, ev)) {\n return true;\n }\n\n if (result.cancel) {\n // The event is canceled at the end already, is this necessary?\n this.cancel(ev, true);\n }\n\n if (!result.key) {\n return true;\n }\n\n this.emit('keydown', ev);\n this.emit('key', result.key, ev);\n this.showCursor();\n this.handler(result.key);\n\n return this.cancel(ev, true);\n};\n\n/**\n * Returns an object that determines how a KeyboardEvent should be handled. The key of the\n * returned value is the new key code to pass to the PTY.\n *\n * Reference: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html\n * @param {KeyboardEvent} ev The keyboard event to be translated to key escape sequence.\n */\nTerminal.prototype.evaluateKeyEscapeSequence = function(ev) {\n var result = {\n // Whether to cancel event propogation (NOTE: this may not be needed since the event is\n // canceled at the end of keyDown\n cancel: false,\n // The new key even to emit\n key: undefined,\n // The number of characters to scroll, if this is defined it will cancel the event\n scrollDisp: undefined\n };\n var modifiers = ev.shiftKey << 0 | ev.altKey << 1 | ev.ctrlKey << 2 | ev.metaKey << 3;\n switch (ev.keyCode) {\n case 8:\n // backspace\n if (ev.shiftKey) {\n result.key = C0.BS; // ^H\n break;\n }\n result.key = C0.DEL; // ^?\n break;\n case 9:\n // tab\n if (ev.shiftKey) {\n result.key = C0.ESC + '[Z';\n break;\n }\n result.key = C0.HT;\n result.cancel = true;\n break;\n case 13:\n // return/enter\n result.key = C0.CR;\n result.cancel = true;\n break;\n case 27:\n // escape\n result.key = C0.ESC;\n result.cancel = true;\n break;\n case 37:\n // left-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'D';\n // HACK: Make Alt + left-arrow behave like Ctrl + left-arrow: move one word backwards\n // http://unix.stackexchange.com/a/108106\n // macOS uses different escape sequences than linux\n if (result.key == C0.ESC + '[1;3D') {\n result.key = (this.browser.isMac) ? C0.ESC + 'b' : C0.ESC + '[1;5D';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OD';\n } else {\n result.key = C0.ESC + '[D';\n }\n break;\n case 39:\n // right-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'C';\n // HACK: Make Alt + right-arrow behave like Ctrl + right-arrow: move one word forward\n // http://unix.stackexchange.com/a/108106\n // macOS uses different escape sequences than linux\n if (result.key == C0.ESC + '[1;3C') {\n result.key = (this.browser.isMac) ? C0.ESC + 'f' : C0.ESC + '[1;5C';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OC';\n } else {\n result.key = C0.ESC + '[C';\n }\n break;\n case 38:\n // up-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'A';\n // HACK: Make Alt + up-arrow behave like Ctrl + up-arrow\n // http://unix.stackexchange.com/a/108106\n if (result.key == C0.ESC + '[1;3A') {\n result.key = C0.ESC + '[1;5A';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OA';\n } else {\n result.key = C0.ESC + '[A';\n }\n break;\n case 40:\n // down-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'B';\n // HACK: Make Alt + down-arrow behave like Ctrl + down-arrow\n // http://unix.stackexchange.com/a/108106\n if (result.key == C0.ESC + '[1;3B') {\n result.key = C0.ESC + '[1;5B';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OB';\n } else {\n result.key = C0.ESC + '[B';\n }\n break;\n case 45:\n // insert\n if (!ev.shiftKey && !ev.ctrlKey) {\n // <Ctrl> or <Shift> + <Insert> are used to\n // copy-paste on some systems.\n result.key = C0.ESC + '[2~';\n }\n break;\n case 46:\n // delete\n if (modifiers) {\n result.key = C0.ESC + '[3;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[3~';\n }\n break;\n case 36:\n // home\n if (modifiers)\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'H';\n else if (this.applicationCursor)\n result.key = C0.ESC + 'OH';\n else\n result.key = C0.ESC + '[H';\n break;\n case 35:\n // end\n if (modifiers)\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'F';\n else if (this.applicationCursor)\n result.key = C0.ESC + 'OF';\n else\n result.key = C0.ESC + '[F';\n break;\n case 33:\n // page up\n if (ev.shiftKey) {\n result.scrollDisp = -(this.rows - 1);\n } else {\n result.key = C0.ESC + '[5~';\n }\n break;\n case 34:\n // page down\n if (ev.shiftKey) {\n result.scrollDisp = this.rows - 1;\n } else {\n result.key = C0.ESC + '[6~';\n }\n break;\n case 112:\n // F1-F12\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'P';\n } else {\n result.key = C0.ESC + 'OP';\n }\n break;\n case 113:\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'Q';\n } else {\n result.key = C0.ESC + 'OQ';\n }\n break;\n case 114:\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'R';\n } else {\n result.key = C0.ESC + 'OR';\n }\n break;\n case 115:\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'S';\n } else {\n result.key = C0.ESC + 'OS';\n }\n break;\n case 116:\n if (modifiers) {\n result.key = C0.ESC + '[15;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[15~';\n }\n break;\n case 117:\n if (modifiers) {\n result.key = C0.ESC + '[17;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[17~';\n }\n break;\n case 118:\n if (modifiers) {\n result.key = C0.ESC + '[18;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[18~';\n }\n break;\n case 119:\n if (modifiers) {\n result.key = C0.ESC + '[19;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[19~';\n }\n break;\n case 120:\n if (modifiers) {\n result.key = C0.ESC + '[20;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[20~';\n }\n break;\n case 121:\n if (modifiers) {\n result.key = C0.ESC + '[21;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[21~';\n }\n break;\n case 122:\n if (modifiers) {\n result.key = C0.ESC + '[23;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[23~';\n }\n break;\n case 123:\n if (modifiers) {\n result.key = C0.ESC + '[24;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[24~';\n }\n break;\n default:\n // a-z and space\n if (ev.ctrlKey && !ev.shiftKey && !ev.altKey && !ev.metaKey) {\n if (ev.keyCode >= 65 && ev.keyCode <= 90) {\n result.key = String.fromCharCode(ev.keyCode - 64);\n } else if (ev.keyCode === 32) {\n // NUL\n result.key = String.fromCharCode(0);\n } else if (ev.keyCode >= 51 && ev.keyCode <= 55) {\n // escape, file sep, group sep, record sep, unit sep\n result.key = String.fromCharCode(ev.keyCode - 51 + 27);\n } else if (ev.keyCode === 56) {\n // delete\n result.key = String.fromCharCode(127);\n } else if (ev.keyCode === 219) {\n // ^[ - Control Sequence Introducer (CSI)\n result.key = String.fromCharCode(27);\n } else if (ev.keyCode === 220) {\n // ^\\ - String Terminator (ST)\n result.key = String.fromCharCode(28);\n } else if (ev.keyCode === 221) {\n // ^] - Operating System Command (OSC)\n result.key = String.fromCharCode(29);\n }\n } else if (!this.browser.isMac && ev.altKey && !ev.ctrlKey && !ev.metaKey) {\n // On Mac this is a third level shift. Use <Esc> instead.\n if (ev.keyCode >= 65 && ev.keyCode <= 90) {\n result.key = C0.ESC + String.fromCharCode(ev.keyCode + 32);\n } else if (ev.keyCode === 192) {\n result.key = C0.ESC + '`';\n } else if (ev.keyCode >= 48 && ev.keyCode <= 57) {\n result.key = C0.ESC + (ev.keyCode - 48);\n }\n } else if (this.browser.isMac && !ev.altKey && !ev.ctrlKey && ev.metaKey) {\n if (ev.keyCode === 65) { // cmd + a\n this.selectAll();\n }\n }\n break;\n }\n\n return result;\n};\n\n/**\n * Set the G level of the terminal\n * @param g\n */\nTerminal.prototype.setgLevel = function(g) {\n this.glevel = g;\n this.charset = this.charsets[g];\n};\n\n/**\n * Set the charset for the given G level of the terminal\n * @param g\n * @param charset\n */\nTerminal.prototype.setgCharset = function(g, charset) {\n this.charsets[g] = charset;\n if (this.glevel === g) {\n this.charset = charset;\n }\n};\n\n/**\n * Handle a keypress event.\n * Key Resources:\n * - https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent\n * @param {KeyboardEvent} ev The keypress event to be handled.\n */\nTerminal.prototype.keyPress = function(ev) {\n var key;\n\n if (this.customKeyEventHandler && this.customKeyEventHandler(ev) === false) {\n return false;\n }\n\n this.cancel(ev);\n\n if (ev.charCode) {\n key = ev.charCode;\n } else if (ev.which == null) {\n key = ev.keyCode;\n } else if (ev.which !== 0 && ev.charCode !== 0) {\n key = ev.which;\n } else {\n return false;\n }\n\n if (!key || (\n (ev.altKey || ev.ctrlKey || ev.metaKey) && !isThirdLevelShift(this, ev)\n )) {\n return false;\n }\n\n key = String.fromCharCode(key);\n\n this.emit('keypress', key, ev);\n this.emit('key', key, ev);\n this.showCursor();\n this.handler(key);\n\n return true;\n};\n\n/**\n * Send data for handling to the terminal\n * @param {string} data\n */\nTerminal.prototype.send = function(data) {\n var self = this;\n\n if (!this.queue) {\n setTimeout(function() {\n self.handler(self.queue);\n self.queue = '';\n }, 1);\n }\n\n this.queue += data;\n};\n\n/**\n * Ring the bell.\n * Note: We could do sweet things with webaudio here\n */\nTerminal.prototype.bell = function() {\n if (!this.visualBell) return;\n var self = this;\n this.element.style.borderColor = 'white';\n setTimeout(function() {\n self.element.style.borderColor = '';\n }, 10);\n if (this.popOnBell) this.focus();\n};\n\n/**\n * Log the current state to the console.\n */\nTerminal.prototype.log = function() {\n if (!this.debug) return;\n if (!this.context.console || !this.context.console.log) return;\n var args = Array.prototype.slice.call(arguments);\n this.context.console.log.apply(this.context.console, args);\n};\n\n/**\n * Log the current state as error to the console.\n */\nTerminal.prototype.error = function() {\n if (!this.debug) return;\n if (!this.context.console || !this.context.console.error) return;\n var args = Array.prototype.slice.call(arguments);\n this.context.console.error.apply(this.context.console, args);\n};\n\n/**\n * Resizes the terminal.\n *\n * @param {number} x The number of columns to resize to.\n * @param {number} y The number of rows to resize to.\n */\nTerminal.prototype.resize = function(x, y) {\n if (isNaN(x) || isNaN(y)) {\n return;\n }\n\n if (y > this.getOption('scrollback')) {\n this.setOption('scrollback', y)\n }\n\n var line\n , el\n , i\n , j\n , ch\n , addToY;\n\n if (x === this.cols && y === this.rows) {\n // Check if we still need to measure the char size (fixes #785).\n if (!this.charMeasure.width || !this.charMeasure.height) {\n this.charMeasure.measure();\n }\n return;\n }\n\n if (x < 1) x = 1;\n if (y < 1) y = 1;\n\n this.buffers.resize(x, y);\n\n // Adjust rows in the DOM to accurately reflect the new dimensions\n while (this.children.length < y) {\n this.insertRow();\n }\n while (this.children.length > y) {\n el = this.children.shift();\n if (!el) continue;\n el.parentNode.removeChild(el);\n }\n\n this.cols = x;\n this.rows = y;\n this.setupStops(this.cols);\n\n this.charMeasure.measure();\n\n this.refresh(0, this.rows - 1);\n\n this.geometry = [this.cols, this.rows];\n this.emit('resize', {terminal: this, cols: x, rows: y});\n};\n\n/**\n * Updates the range of rows to refresh\n * @param {number} y The number of rows to refresh next.\n */\nTerminal.prototype.updateRange = function(y) {\n if (y < this.refreshStart) this.refreshStart = y;\n if (y > this.refreshEnd) this.refreshEnd = y;\n // if (y > this.refreshEnd) {\n // this.refreshEnd = y;\n // if (y > this.rows - 1) {\n // this.refreshEnd = this.rows - 1;\n // }\n // }\n};\n\n/**\n * Set the range of refreshing to the maximum value\n */\nTerminal.prototype.maxRange = function() {\n this.refreshStart = 0;\n this.refreshEnd = this.rows - 1;\n};\n\n\n\n/**\n * Setup the tab stops.\n * @param {number} i\n */\nTerminal.prototype.setupStops = function(i) {\n if (i != null) {\n if (!this.buffer.tabs[i]) {\n i = this.prevStop(i);\n }\n } else {\n this.buffer.tabs = {};\n i = 0;\n }\n\n for (; i < this.cols; i += this.getOption('tabStopWidth')) {\n this.buffer.tabs[i] = true;\n }\n};\n\n\n/**\n * Move the cursor to the previous tab stop from the given position (default is current).\n * @param {number} x The position to move the cursor to the previous tab stop.\n */\nTerminal.prototype.prevStop = function(x) {\n if (x == null) x = this.buffer.x;\n while (!this.buffer.tabs[--x] && x > 0);\n return x >= this.cols\n ? this.cols - 1\n : x < 0 ? 0 : x;\n};\n\n\n/**\n * Move the cursor one tab stop forward from the given position (default is current).\n * @param {number} x The position to move the cursor one tab stop forward.\n */\nTerminal.prototype.nextStop = function(x) {\n if (x == null) x = this.buffer.x;\n while (!this.buffer.tabs[++x] && x < this.cols);\n return x >= this.cols\n ? this.cols - 1\n : x < 0 ? 0 : x;\n};\n\n\n/**\n * Erase in the identified line everything from \"x\" to the end of the line (right).\n * @param {number} x The column from which to start erasing to the end of the line.\n * @param {number} y The line in which to operate.\n */\nTerminal.prototype.eraseRight = function(x, y) {\n var line = this.buffer.lines.get(this.buffer.ybase + y);\n if (!line) {\n return;\n }\n var ch = [this.eraseAttr(), ' ', 1]; // xterm\n for (; x < this.cols; x++) {\n line[x] = ch;\n }\n this.updateRange(y);\n};\n\n\n\n/**\n * Erase in the identified line everything from \"x\" to the start of the line (left).\n * @param {number} x The column from which to start erasing to the start of the line.\n * @param {number} y The line in which to operate.\n */\nTerminal.prototype.eraseLeft = function(x, y) {\n var line = this.buffer.lines.get(this.buffer.ybase + y);\n if (!line) {\n return;\n }\n var ch = [this.eraseAttr(), ' ', 1]; // xterm\n x++;\n while (x--) {\n line[x] = ch;\n }\n this.updateRange(y);\n};\n\n/**\n * Clears the entire buffer, making the prompt line the new first line.\n */\nTerminal.prototype.clear = function() {\n if (this.buffer.ybase === 0 && this.buffer.y === 0) {\n // Don't clear if it's already clear\n return;\n }\n this.buffer.lines.set(0, this.buffer.lines.get(this.buffer.ybase + this.buffer.y));\n this.buffer.lines.length = 1;\n this.buffer.ydisp = 0;\n this.buffer.ybase = 0;\n this.buffer.y = 0;\n for (var i = 1; i < this.rows; i++) {\n this.buffer.lines.push(this.blankLine());\n }\n this.refresh(0, this.rows - 1);\n this.emit('scroll', this.buffer.ydisp);\n};\n\n/**\n * Erase all content in the given line\n * @param {number} y The line to erase all of its contents.\n */\nTerminal.prototype.eraseLine = function(y) {\n this.eraseRight(0, y);\n};\n\n\n/**\n * Return the data array of a blank line\n * @param {number} cur First bunch of data for each \"blank\" character.\n * @param {boolean} isWrapped Whether the new line is wrapped from the previous line.\n */\nTerminal.prototype.blankLine = function(cur, isWrapped, cols) {\n var attr = cur\n ? this.eraseAttr()\n : this.defAttr;\n\n var ch = [attr, ' ', 1] // width defaults to 1 halfwidth character\n , line = []\n , i = 0;\n\n // TODO: It is not ideal that this is a property on an array, a buffer line\n // class should be added that will hold this data and other useful functions.\n if (isWrapped) {\n line.isWrapped = isWrapped;\n }\n\n cols = cols || this.cols;\n for (; i < cols; i++) {\n line[i] = ch;\n }\n\n return line;\n};\n\n\n/**\n * If cur return the back color xterm feature attribute. Else return defAttr.\n * @param {object} cur\n */\nTerminal.prototype.ch = function(cur) {\n return cur\n ? [this.eraseAttr(), ' ', 1]\n : [this.defAttr, ' ', 1];\n};\n\n\n/**\n * Evaluate if the current terminal is the given argument.\n * @param {object} term The terminal to evaluate\n */\nTerminal.prototype.is = function(term) {\n var name = this.termName;\n return (name + '').indexOf(term) === 0;\n};\n\n\n/**\n * Emit the 'data' event and populate the given data.\n * @param {string} data The data to populate in the event.\n */\nTerminal.prototype.handler = function(data) {\n // Prevents all events to pty process if stdin is disabled\n if (this.options.disableStdin) {\n return;\n }\n\n // Clear the selection if the selection manager is available and has an active selection\n if (this.selectionManager && this.selectionManager.hasSelection) {\n this.selectionManager.clearSelection();\n }\n\n // Input is being sent to the terminal, the terminal should focus the prompt.\n if (this.buffer.ybase !== this.buffer.ydisp) {\n this.scrollToBottom();\n }\n this.emit('data', data);\n};\n\n\n/**\n * Emit the 'title' event and populate the given title.\n * @param {string} title The title to populate in the event.\n */\nTerminal.prototype.handleTitle = function(title) {\n /**\n * This event is emitted when the title of the terminal is changed\n * from inside the terminal. The parameter is the new title.\n *\n * @event title\n */\n this.emit('title', title);\n};\n\n\n/**\n * ESC\n */\n\n/**\n * ESC D Index (IND is 0x84).\n */\nTerminal.prototype.index = function() {\n this.buffer.y++;\n if (this.buffer.y > this.buffer.scrollBottom) {\n this.buffer.y--;\n this.scroll();\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this.buffer.x >= this.cols) {\n this.buffer.x--;\n }\n};\n\n\n/**\n * ESC M Reverse Index (RI is 0x8d).\n *\n * Move the cursor up one row, inserting a new blank line if necessary.\n */\nTerminal.prototype.reverseIndex = function() {\n var j;\n if (this.buffer.y === this.buffer.scrollTop) {\n // possibly move the code below to term.reverseScroll();\n // test: echo -ne '\\e[1;1H\\e[44m\\eM\\e[0m'\n // blankLine(true) is xterm/linux behavior\n this.buffer.lines.shiftElements(this.buffer.y + this.buffer.ybase, this.rows - 1, 1);\n this.buffer.lines.set(this.buffer.y + this.buffer.ybase, this.blankLine(true));\n this.updateRange(this.buffer.scrollTop);\n this.updateRange(this.buffer.scrollBottom);\n } else {\n this.buffer.y--;\n }\n};\n\n\n/**\n * ESC c Full Reset (RIS).\n */\nTerminal.prototype.reset = function() {\n this.options.rows = this.rows;\n this.options.cols = this.cols;\n var customKeyEventHandler = this.customKeyEventHandler;\n var cursorBlinkInterval = this.cursorBlinkInterval;\n var inputHandler = this.inputHandler;\n Terminal.call(this, this.options);\n this.customKeyEventHandler = customKeyEventHandler;\n this.cursorBlinkInterval = cursorBlinkInterval;\n this.inputHandler = inputHandler;\n this.refresh(0, this.rows - 1);\n this.viewport.syncScrollArea();\n};\n\n\n/**\n * ESC H Tab Set (HTS is 0x88).\n */\nTerminal.prototype.tabSet = function() {\n this.buffer.tabs[this.buffer.x] = true;\n};\n\n/**\n * Helpers\n */\n\nfunction on(el, type, handler, capture) {\n if (!Array.isArray(el)) {\n el = [el];\n }\n el.forEach(function (element) {\n element.addEventListener(type, handler, capture || false);\n });\n}\n\nfunction off(el, type, handler, capture) {\n el.removeEventListener(type, handler, capture || false);\n}\n\nfunction cancel(ev, force) {\n if (!this.cancelEvents && !force) {\n return;\n }\n ev.preventDefault();\n ev.stopPropagation();\n return false;\n}\n\nfunction inherits(child, parent) {\n function f() {\n this.constructor = child;\n }\n f.prototype = parent.prototype;\n child.prototype = new f;\n}\n\nfunction indexOf(obj, el) {\n var i = obj.length;\n while (i--) {\n if (obj[i] === el) return i;\n }\n return -1;\n}\n\nfunction isThirdLevelShift(term, ev) {\n var thirdLevelKey =\n (term.browser.isMac && ev.altKey && !ev.ctrlKey && !ev.metaKey) ||\n (term.browser.isMSWindows && ev.altKey && ev.ctrlKey && !ev.metaKey);\n\n if (ev.type == 'keypress') {\n return thirdLevelKey;\n }\n\n // Don't invoke for arrows, pageDown, home, backspace, etc. (on non-keypress events)\n return thirdLevelKey && (!ev.keyCode || ev.keyCode > 47);\n}\n\n// Expose to InputHandler (temporary)\nTerminal.prototype.matchColor = matchColor;\n\nfunction matchColor(r1, g1, b1) {\n var hash = (r1 << 16) | (g1 << 8) | b1;\n\n if (matchColor._cache[hash] != null) {\n return matchColor._cache[hash];\n }\n\n var ldiff = Infinity\n , li = -1\n , i = 0\n , c\n , r2\n , g2\n , b2\n , diff;\n\n for (; i < Terminal.vcolors.length; i++) {\n c = Terminal.vcolors[i];\n r2 = c[0];\n g2 = c[1];\n b2 = c[2];\n\n diff = matchColor.distance(r1, g1, b1, r2, g2, b2);\n\n if (diff === 0) {\n li = i;\n break;\n }\n\n if (diff < ldiff) {\n ldiff = diff;\n li = i;\n }\n }\n\n return matchColor._cache[hash] = li;\n}\n\nmatchColor._cache = {};\n\n// http://stackoverflow.com/questions/1633828\nmatchColor.distance = function(r1, g1, b1, r2, g2, b2) {\n return Math.pow(30 * (r1 - r2), 2)\n + Math.pow(59 * (g1 - g2), 2)\n + Math.pow(11 * (b1 - b2), 2);\n};\n\nfunction each(obj, iter, con) {\n if (obj.forEach) return obj.forEach(iter, con);\n for (var i = 0; i < obj.length; i++) {\n iter.call(con, obj[i], i, obj);\n }\n}\n\nfunction wasMondifierKeyOnlyEvent(ev) {\n return ev.keyCode === 16 || // Shift\n ev.keyCode === 17 || // Ctrl\n ev.keyCode === 18; // Alt\n}\n\nfunction keys(obj) {\n if (Object.keys) return Object.keys(obj);\n var key, keys = [];\n for (key in obj) {\n if (Object.prototype.hasOwnProperty.call(obj, key)) {\n keys.push(key);\n }\n }\n return keys;\n}\n\n/**\n * Expose\n */\n\nTerminal.translateBufferLineToString = translateBufferLineToString;\nTerminal.EventEmitter = EventEmitter;\nTerminal.inherits = inherits;\n\n/**\n * Adds an event listener to the terminal.\n *\n * @param {string} event The name of the event. TODO: Document all event types\n * @param {function} callback The function to call when the event is triggered.\n */\nTerminal.on = on;\nTerminal.off = off;\nTerminal.cancel = cancel;\n\nmodule.exports = Terminal;\n","/**\n * @license MIT\n */\n\nimport { CharMeasure } from './CharMeasure';\n\nexport function getCoordsRelativeToElement(event: MouseEvent, element: HTMLElement): [number, number] {\n // Ignore browsers that don't support MouseEvent.pageX\n if (event.pageX == null) {\n return null;\n }\n\n let x = event.pageX;\n let y = event.pageY;\n\n // Converts the coordinates from being relative to the document to being\n // relative to the terminal.\n while (element && element !== self.document.documentElement) {\n x -= element.offsetLeft;\n y -= element.offsetTop;\n element = 'offsetParent' in element ? <HTMLElement>element.offsetParent : <HTMLElement>element.parentElement;\n }\n return [x, y];\n}\n\n/**\n * Gets coordinates within the terminal for a particular mouse event. The result\n * is returned as an array in the form [x, y] instead of an object as it's a\n * little faster and this function is used in some low level code.\n * @param event The mouse event.\n * @param rowContainer The terminal's row container.\n * @param charMeasure The char measure object used to determine character sizes.\n * @param colCount The number of columns in the terminal.\n * @param rowCount The number of rows n the terminal.\n * @param isSelection Whether the request is for the selection or not. This will\n * apply an offset to the x value such that the left half of the cell will\n * select that cell and the right half will select the next cell.\n */\nexport function getCoords(event: MouseEvent, rowContainer: HTMLElement, charMeasure: CharMeasure, colCount: number, rowCount: number, isSelection?: boolean): [number, number] {\n // Coordinates cannot be measured if charMeasure has not been initialized\n if (!charMeasure.width || !charMeasure.height) {\n return null;\n }\n\n const coords = getCoordsRelativeToElement(event, rowContainer);\n if (!coords) {\n return null;\n }\n\n // Convert to cols/rows.\n coords[0] = Math.ceil((coords[0] + (isSelection ? charMeasure.width / 2 : 0)) / charMeasure.width);\n coords[1] = Math.ceil(coords[1] / charMeasure.height);\n\n // Ensure coordinates are within the terminal viewport.\n coords[0] = Math.min(Math.max(coords[0], 1), colCount + 1);\n coords[1] = Math.min(Math.max(coords[1], 1), rowCount + 1);\n\n return coords;\n}\n\n/**\n * Gets coordinates within the terminal for a particular mouse event, wrapping\n * them to the bounds of the terminal and adding 32 to both the x and y values\n * as expected by xterm.\n * @param event The mouse event.\n * @param rowContainer The terminal's row container.\n * @param charMeasure The char measure object used to determine character sizes.\n * @param colCount The number of columns in the terminal.\n * @param rowCount The number of rows in the terminal.\n */\nexport function getRawByteCoords(event: MouseEvent, rowContainer: HTMLElement, charMeasure: CharMeasure, colCount: number, rowCount: number): { x: number, y: number } {\n const coords = getCoords(event, rowContainer, charMeasure, colCount, rowCount);\n let x = coords[0];\n let y = coords[1];\n\n // xterm sends raw bytes and starts at 32 (SP) for each.\n x += 32;\n y += 32;\n\n return { x, y };\n}\n","/**\n * Generic utilities module with methods that can be helpful at different parts of the code base.\n * @module xterm/utils/Generic\n * @license MIT\n */\n\n/**\n * Return if the given array contains the given element\n * @param {Array} array The array to search for the given element.\n * @param {Object} el The element to look for into the array\n */\nexport function contains(arr: any[], el: any) {\n return arr.indexOf(el) >= 0;\n};\n","/**\n * @module xterm/utils/DomElementObjectPool\n * @license MIT\n */\n\n/**\n * An object pool that manages acquisition and releasing of DOM elements for\n * when reuse is desirable.\n */\nexport class DomElementObjectPool {\n private static readonly OBJECT_ID_ATTRIBUTE = 'data-obj-id';\n\n private static _objectCount = 0;\n\n private _type: string;\n private _pool: HTMLElement[];\n private _inUse: {[key: string]: HTMLElement};\n\n /**\n * @param type The DOM element type (div, span, etc.).\n */\n constructor(private type: string) {\n this._type = type;\n this._pool = [];\n this._inUse = {};\n }\n\n /**\n * Acquire an element from the pool, creating it if the pool is empty.\n */\n public acquire(): HTMLElement {\n let element: HTMLElement;\n if (this._pool.length === 0) {\n element = this._createNew();\n } else {\n element = this._pool.pop();\n }\n this._inUse[element.getAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE)] = element;\n return element;\n }\n\n /**\n * Release an element back into the pool. It's up to the caller of this\n * function to ensure that all external references to the element have been\n * removed.\n * @param element The element being released.\n */\n public release(element: HTMLElement): void {\n if (!this._inUse[element.getAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE)]) {\n throw new Error('Could not release an element not yet acquired');\n }\n delete this._inUse[element.getAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE)];\n this._cleanElement(element);\n this._pool.push(element);\n }\n\n /**\n * Creates a new element for the pool.\n */\n private _createNew(): HTMLElement {\n const element = document.createElement(this._type);\n const id = DomElementObjectPool._objectCount++;\n element.setAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE, id.toString(10));\n return element;\n }\n\n /**\n * Resets an element back to a \"clean state\".\n * @param element The element to be cleaned.\n */\n private _cleanElement(element: HTMLElement): void {\n element.className = '';\n element.innerHTML = '';\n }\n}\n","/**\n * Represents a circular list; a list with a maximum size that wraps around when push is called,\n * overriding values at the start of the list.\n * @module xterm/utils/CircularList\n * @license MIT\n */\nimport { EventEmitter } from '../EventEmitter';\nimport { ICircularList } from '../Interfaces';\n\nexport class CircularList<T> extends EventEmitter implements ICircularList<T> {\n private _array: T[];\n private _startIndex: number;\n private _length: number;\n\n constructor(maxLength: number) {\n super();\n this._array = new Array<T>(maxLength);\n this._startIndex = 0;\n this._length = 0;\n }\n\n public get maxLength(): number {\n return this._array.length;\n }\n\n public set maxLength(newMaxLength: number) {\n // Reconstruct array, starting at index 0. Only transfer values from the\n // indexes 0 to length.\n let newArray = new Array<T>(newMaxLength);\n for (let i = 0; i < Math.min(newMaxLength, this.length); i++) {\n newArray[i] = this._array[this._getCyclicIndex(i)];\n }\n this._array = newArray;\n this._startIndex = 0;\n }\n\n public get length(): number {\n return this._length;\n }\n\n public set length(newLength: number) {\n if (newLength > this._length) {\n for (let i = this._length; i < newLength; i++) {\n this._array[i] = undefined;\n }\n }\n this._length = newLength;\n }\n\n public get forEach(): (callbackfn: (value: T, index: number) => void) => void {\n return (callbackfn: (value: T, index: number) => void) => {\n let i = 0;\n let length = this.length;\n for (let i = 0; i < length; i++) {\n callbackfn(this.get(i), i);\n }\n };\n }\n\n /**\n * Gets the value at an index.\n *\n * Note that for performance reasons there is no bounds checking here, the index reference is\n * circular so this should always return a value and never throw.\n * @param index The index of the value to get.\n * @return The value corresponding to the index.\n */\n public get(index: number): T {\n return this._array[this._getCyclicIndex(index)];\n }\n\n /**\n * Sets the value at an index.\n *\n * Note that for performance reasons there is no bounds checking here, the index reference is\n * circular so this should always return a value and never throw.\n * @param index The index to set.\n * @param value The value to set.\n */\n public set(index: number, value: T): void {\n this._array[this._getCyclicIndex(index)] = value;\n }\n\n /**\n * Pushes a new value onto the list, wrapping around to the start of the array, overriding index 0\n * if the maximum length is reached.\n * @param value The value to push onto the list.\n */\n public push(value: T): void {\n this._array[this._getCyclicIndex(this._length)] = value;\n if (this._length === this.maxLength) {\n this._startIndex++;\n if (this._startIndex === this.maxLength) {\n this._startIndex = 0;\n }\n this.emit('trim', 1);\n } else {\n this._length++;\n }\n }\n\n /**\n * Removes and returns the last value on the list.\n * @return The popped value.\n */\n public pop(): T {\n return this._array[this._getCyclicIndex(this._length-- - 1)];\n }\n\n /**\n * Deletes and/or inserts items at a particular index (in that order). Unlike\n * Array.prototype.splice, this operation does not return the deleted items as a new array in\n * order to save creating a new array. Note that this operation may shift all values in the list\n * in the worst case.\n * @param start The index to delete and/or insert.\n * @param deleteCount The number of elements to delete.\n * @param items The items to insert.\n */\n public splice(start: number, deleteCount: number, ...items: T[]): void {\n // Delete items\n if (deleteCount) {\n for (let i = start; i < this._length - deleteCount; i++) {\n this._array[this._getCyclicIndex(i)] = this._array[this._getCyclicIndex(i + deleteCount)];\n }\n this._length -= deleteCount;\n }\n\n if (items && items.length) {\n // Add items\n for (let i = this._length - 1; i >= start; i--) {\n this._array[this._getCyclicIndex(i + items.length)] = this._array[this._getCyclicIndex(i)];\n }\n for (let i = 0; i < items.length; i++) {\n this._array[this._getCyclicIndex(start + i)] = items[i];\n }\n\n // Adjust length as needed\n if (this._length + items.length > this.maxLength) {\n const countToTrim = (this._length + items.length) - this.maxLength;\n this._startIndex += countToTrim;\n this._length = this.maxLength;\n this.emit('trim', countToTrim);\n } else {\n this._length += items.length;\n }\n }\n }\n\n /**\n * Trims a number of items from the start of the list.\n * @param count The number of items to remove.\n */\n public trimStart(count: number): void {\n if (count > this._length) {\n count = this._length;\n }\n this._startIndex += count;\n this._length -= count;\n this.emit('trim', count);\n }\n\n public shiftElements(start: number, count: number, offset: number): void {\n if (count <= 0) {\n return;\n }\n if (start < 0 || start >= this._length) {\n throw new Error('start argument out of range');\n }\n if (start + offset < 0) {\n throw new Error('Cannot shift elements in list beyond index 0');\n }\n\n if (offset > 0) {\n for (let i = count - 1; i >= 0; i--) {\n this.set(start + i + offset, this.get(start + i));\n }\n const expandListBy = (start + count + offset) - this._length;\n if (expandListBy > 0) {\n this._length += expandListBy;\n while (this._length > this.maxLength) {\n this._length--;\n this._startIndex++;\n this.emit('trim', 1);\n }\n }\n } else {\n for (let i = 0; i < count; i++) {\n this.set(start + i + offset, this.get(start + i));\n }\n }\n }\n\n /**\n * Gets the cyclic index for the specified regular index. The cyclic index can then be used on the\n * backing array to get the element associated with the regular index.\n * @param index The regular index.\n * @returns The cyclic index.\n */\n private _getCyclicIndex(index: number): number {\n return (this._startIndex + index) % this.maxLength;\n }\n}\n","/**\n * @module xterm/utils/CharMeasure\n * @license MIT\n */\n\nimport { EventEmitter } from '../EventEmitter.js';\n\n/**\n * Utility class that measures the size of a character.\n */\nexport class CharMeasure extends EventEmitter {\n private _document: Document;\n private _parentElement: HTMLElement;\n private _measureElement: HTMLElement;\n private _width: number;\n private _height: number;\n\n constructor(document: Document, parentElement: HTMLElement) {\n super();\n this._document = document;\n this._parentElement = parentElement;\n }\n\n public get width(): number {\n return this._width;\n }\n\n public get height(): number {\n return this._height;\n }\n\n public measure(): void {\n if (!this._measureElement) {\n this._measureElement = this._document.createElement('span');\n this._measureElement.style.position = 'absolute';\n this._measureElement.style.top = '0';\n this._measureElement.style.left = '-9999em';\n this._measureElement.textContent = 'W';\n this._measureElement.setAttribute('aria-hidden', 'true');\n this._parentElement.appendChild(this._measureElement);\n // Perform _doMeasure async if the element was just attached as sometimes\n // getBoundingClientRect does not return accurate values without this.\n setTimeout(() => this._doMeasure(), 0);\n } else {\n this._doMeasure();\n }\n }\n\n private _doMeasure(): void {\n const geometry = this._measureElement.getBoundingClientRect();\n // The element is likely currently display:none, we should retain the\n // previous value.\n if (geometry.width === 0 || geometry.height === 0) {\n return;\n }\n if (this._width !== geometry.width || this._height !== geometry.height) {\n this._width = geometry.width;\n this._height = geometry.height;\n this.emit('charsizechanged');\n }\n }\n}\n","/**\n * @license MIT\n */\n\n// TODO: This module should be merged into a buffer or buffer line class\n\nconst LINE_DATA_CHAR_INDEX = 1;\nconst LINE_DATA_WIDTH_INDEX = 2;\n\n/**\n * Translates a buffer line to a string, with optional start and end columns.\n * Wide characters will count as two columns in the resulting string. This\n * function is useful for getting the actual text underneath the raw selection\n * position.\n * @param line The line being translated.\n * @param trimRight Whether to trim whitespace to the right.\n * @param startCol The column to start at.\n * @param endCol The column to end at.\n */\nexport function translateBufferLineToString(line: any, trimRight: boolean, startCol: number = 0, endCol: number = null): string {\n // Get full line\n let lineString = '';\n let widthAdjustedStartCol = startCol;\n let widthAdjustedEndCol = endCol;\n for (let i = 0; i < line.length; i++) {\n const char = line[i];\n lineString += char[LINE_DATA_CHAR_INDEX];\n // Adjust start and end cols for wide characters if they affect their\n // column indexes\n if (char[LINE_DATA_WIDTH_INDEX] === 0) {\n if (startCol >= i) {\n widthAdjustedStartCol--;\n }\n if (endCol >= i) {\n widthAdjustedEndCol--;\n }\n }\n }\n\n // Calculate the final end col by trimming whitespace on the right of the\n // line if needed.\n let finalEndCol = widthAdjustedEndCol || line.length;\n if (trimRight) {\n const rightWhitespaceIndex = lineString.search(/\\s+$/);\n if (rightWhitespaceIndex !== -1) {\n finalEndCol = Math.min(finalEndCol, rightWhitespaceIndex);\n }\n // Return the empty string if only trimmed whitespace is selected\n if (finalEndCol <= widthAdjustedStartCol) {\n return '';\n }\n }\n\n return lineString.substring(widthAdjustedStartCol, finalEndCol);\n}\n","/**\n * Attributes and methods to help with identifying the current browser and platform.\n * @module xterm/utils/Browser\n * @license MIT\n */\n\nimport { contains } from './Generic';\n\nconst isNode = (typeof navigator === 'undefined') ? true : false;\nconst userAgent = (isNode) ? 'node' : navigator.userAgent;\nconst platform = (isNode) ? 'node' : navigator.platform;\n\nexport const isFirefox = !!~userAgent.indexOf('Firefox');\nexport const isMSIE = !!~userAgent.indexOf('MSIE') || !!~userAgent.indexOf('Trident');\n\n// Find the users platform. We use this to interpret the meta key\n// and ISO third level shifts.\n// http://stackoverflow.com/q/19877924/577598\nexport const isMac = contains(['Macintosh', 'MacIntel', 'MacPPC', 'Mac68K'], platform);\nexport const isIpad = platform === 'iPad';\nexport const isIphone = platform === 'iPhone';\nexport const isMSWindows = contains(['Windows', 'Win16', 'Win32', 'WinCE'], platform);\nexport const isLinux = platform.indexOf('Linux') >= 0;\n","/**\n * Clipboard handler module: exports methods for handling all clipboard-related events in the\n * terminal.\n * @module xterm/handlers/Clipboard\n * @license MIT\n */\n\nimport { ITerminal, ISelectionManager } from '../Interfaces';\n\ninterface IWindow extends Window {\n clipboardData?: {\n getData(format: string): string;\n setData(format: string, data: string);\n };\n}\n\ndeclare var window: IWindow;\n\n/**\n * Prepares text to be pasted into the terminal by normalizing the line endings\n * @param text The pasted text that needs processing before inserting into the terminal\n */\nexport function prepareTextForTerminal(text: string, isMSWindows: boolean): string {\n if (isMSWindows) {\n return text.replace(/\\r?\\n/g, '\\r');\n }\n return text;\n}\n\n/**\n * Binds copy functionality to the given terminal.\n * @param {ClipboardEvent} ev The original copy event to be handled\n */\nexport function copyHandler(ev: ClipboardEvent, term: ITerminal, selectionManager: ISelectionManager) {\n if (term.browser.isMSIE) {\n window.clipboardData.setData('Text', selectionManager.selectionText);\n } else {\n ev.clipboardData.setData('text/plain', selectionManager.selectionText);\n }\n\n // Prevent or the original text will be copied.\n ev.preventDefault();\n}\n\n/**\n * Redirect the clipboard's data to the terminal's input handler.\n * @param {ClipboardEvent} ev The original paste event to be handled\n * @param {Terminal} term The terminal on which to apply the handled paste event\n */\nexport function pasteHandler(ev: ClipboardEvent, term: ITerminal) {\n ev.stopPropagation();\n\n let text: string;\n\n let dispatchPaste = function(text) {\n text = prepareTextForTerminal(text, term.browser.isMSWindows);\n term.handler(text);\n term.textarea.value = '';\n term.emit('paste', text);\n\n return term.cancel(ev);\n };\n\n if (term.browser.isMSIE) {\n if (window.clipboardData) {\n text = window.clipboardData.getData('Text');\n dispatchPaste(text);\n }\n } else {\n if (ev.clipboardData) {\n text = ev.clipboardData.getData('text/plain');\n dispatchPaste(text);\n }\n }\n}\n\n/**\n * Moves the textarea under the mouse cursor and focuses it.\n * @param ev The original right click event to be handled.\n * @param textarea The terminal's textarea.\n */\nexport function moveTextAreaUnderMouseCursor(ev: MouseEvent, textarea: HTMLTextAreaElement) {\n // Bring textarea at the cursor position\n textarea.style.position = 'fixed';\n textarea.style.width = '20px';\n textarea.style.height = '20px';\n textarea.style.left = (ev.clientX - 10) + 'px';\n textarea.style.top = (ev.clientY - 10) + 'px';\n textarea.style.zIndex = '1000';\n\n textarea.focus();\n\n // Reset the terminal textarea's styling\n setTimeout(function () {\n textarea.style.position = null;\n textarea.style.width = null;\n textarea.style.height = null;\n textarea.style.left = null;\n textarea.style.top = null;\n textarea.style.zIndex = null;\n }, 4);\n}\n\n/**\n * Bind to right-click event and allow right-click copy and paste.\n * @param ev The original right click event to be handled.\n * @param textarea The terminal's textarea.\n * @param selectionManager The terminal's selection manager.\n */\nexport function rightClickHandler(ev: MouseEvent, textarea: HTMLTextAreaElement, selectionManager: ISelectionManager) {\n moveTextAreaUnderMouseCursor(ev, textarea);\n\n // Get textarea ready to copy from the context menu\n textarea.value = selectionManager.selectionText;\n textarea.select();\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\nimport { CharMeasure } from './utils/CharMeasure';\n\n/**\n * Represents the viewport of a terminal, the visible area within the larger buffer of output.\n * Logic for the virtual scroll bar is included in this object.\n */\nexport class Viewport {\n private currentRowHeight: number;\n private lastRecordedBufferLength: number;\n private lastRecordedViewportHeight: number;\n private lastTouchY: number;\n\n /**\n * Creates a new Viewport.\n * @param terminal The terminal this viewport belongs to.\n * @param viewportElement The DOM element acting as the viewport.\n * @param scrollArea The DOM element acting as the scroll area.\n * @param charMeasure A DOM element used to measure the character size of. the terminal.\n */\n constructor(\n private terminal: ITerminal,\n private viewportElement: HTMLElement,\n private scrollArea: HTMLElement,\n private charMeasure: CharMeasure\n ) {\n this.currentRowHeight = 0;\n this.lastRecordedBufferLength = 0;\n this.lastRecordedViewportHeight = 0;\n\n this.terminal.on('scroll', this.syncScrollArea.bind(this));\n this.terminal.on('resize', this.syncScrollArea.bind(this));\n this.viewportElement.addEventListener('scroll', this.onScroll.bind(this));\n\n // Perform this async to ensure the CharMeasure is ready.\n setTimeout(() => this.syncScrollArea(), 0);\n }\n\n /**\n * Refreshes row height, setting line-height, viewport height and scroll area height if\n * necessary.\n */\n private refresh(): void {\n if (this.charMeasure.height > 0) {\n const rowHeightChanged = this.charMeasure.height !== this.currentRowHeight;\n if (rowHeightChanged) {\n this.currentRowHeight = this.charMeasure.height;\n this.viewportElement.style.lineHeight = this.charMeasure.height + 'px';\n this.terminal.rowContainer.style.lineHeight = this.charMeasure.height + 'px';\n }\n const viewportHeightChanged = this.lastRecordedViewportHeight !== this.terminal.rows;\n if (rowHeightChanged || viewportHeightChanged) {\n this.lastRecordedViewportHeight = this.terminal.rows;\n this.viewportElement.style.height = this.charMeasure.height * this.terminal.rows + 'px';\n this.terminal.selectionContainer.style.height = this.viewportElement.style.height;\n }\n this.scrollArea.style.height = (this.charMeasure.height * this.lastRecordedBufferLength) + 'px';\n }\n }\n\n /**\n * Updates dimensions and synchronizes the scroll area if necessary.\n */\n public syncScrollArea(): void {\n if (this.lastRecordedBufferLength !== this.terminal.buffer.lines.length) {\n // If buffer height changed\n this.lastRecordedBufferLength = this.terminal.buffer.lines.length;\n this.refresh();\n } else if (this.lastRecordedViewportHeight !== this.terminal.rows) {\n // If viewport height changed\n this.refresh();\n } else {\n // If size has changed, refresh viewport\n if (this.charMeasure.height !== this.currentRowHeight) {\n this.refresh();\n }\n }\n\n // Sync scrollTop\n const scrollTop = this.terminal.buffer.ydisp * this.currentRowHeight;\n if (this.viewportElement.scrollTop !== scrollTop) {\n this.viewportElement.scrollTop = scrollTop;\n }\n }\n\n /**\n * Handles scroll events on the viewport, calculating the new viewport and requesting the\n * terminal to scroll to it.\n * @param ev The scroll event.\n */\n private onScroll(ev: Event) {\n const newRow = Math.round(this.viewportElement.scrollTop / this.currentRowHeight);\n const diff = newRow - this.terminal.buffer.ydisp;\n this.terminal.scrollDisp(diff, true);\n }\n\n /**\n * Handles mouse wheel events by adjusting the viewport's scrollTop and delegating the actual\n * scrolling to `onScroll`, this event needs to be attached manually by the consumer of\n * `Viewport`.\n * @param ev The mouse wheel event.\n */\n public onWheel(ev: WheelEvent) {\n if (ev.deltaY === 0) {\n // Do nothing if it's not a vertical scroll event\n return;\n }\n // Fallback to WheelEvent.DOM_DELTA_PIXEL\n let multiplier = 1;\n if (ev.deltaMode === WheelEvent.DOM_DELTA_LINE) {\n multiplier = this.currentRowHeight;\n } else if (ev.deltaMode === WheelEvent.DOM_DELTA_PAGE) {\n multiplier = this.currentRowHeight * this.terminal.rows;\n }\n this.viewportElement.scrollTop += ev.deltaY * multiplier;\n // Prevent the page from scrolling when the terminal scrolls\n ev.preventDefault();\n };\n\n /**\n * Handles the touchstart event, recording the touch occurred.\n * @param ev The touch event.\n */\n public onTouchStart(ev: TouchEvent) {\n this.lastTouchY = ev.touches[0].pageY;\n };\n\n /**\n * Handles the touchmove event, scrolling the viewport if the position shifted.\n * @param ev The touch event.\n */\n public onTouchMove(ev: TouchEvent) {\n let deltaY = this.lastTouchY - ev.touches[0].pageY;\n this.lastTouchY = ev.touches[0].pageY;\n if (deltaY === 0) {\n return;\n }\n this.viewportElement.scrollTop += deltaY;\n ev.preventDefault();\n };\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\n\n/**\n * Represents a selection within the buffer. This model only cares about column\n * and row coordinates, not wide characters.\n */\nexport class SelectionModel {\n /**\n * Whether select all is currently active.\n */\n public isSelectAllActive: boolean;\n\n /**\n * The [x, y] position the selection starts at.\n */\n public selectionStart: [number, number];\n\n /**\n * The minimal length of the selection from the start position. When double\n * clicking on a word, the word will be selected which makes the selection\n * start at the start of the word and makes this variable the length.\n */\n public selectionStartLength: number;\n\n /**\n * The [x, y] position the selection ends at.\n */\n public selectionEnd: [number, number];\n\n constructor(\n private _terminal: ITerminal\n ) {\n this.clearSelection();\n }\n\n /**\n * Clears the current selection.\n */\n public clearSelection(): void {\n this.selectionStart = null;\n this.selectionEnd = null;\n this.isSelectAllActive = false;\n this.selectionStartLength = 0;\n }\n\n /**\n * The final selection start, taking into consideration select all.\n */\n public get finalSelectionStart(): [number, number] {\n if (this.isSelectAllActive) {\n return [0, 0];\n }\n\n if (!this.selectionEnd || !this.selectionStart) {\n return this.selectionStart;\n }\n\n return this.areSelectionValuesReversed() ? this.selectionEnd : this.selectionStart;\n }\n\n /**\n * The final selection end, taking into consideration select all, double click\n * word selection and triple click line selection.\n */\n public get finalSelectionEnd(): [number, number] {\n if (this.isSelectAllActive) {\n return [this._terminal.cols, this._terminal.buffer.ybase + this._terminal.rows - 1];\n }\n\n if (!this.selectionStart) {\n return null;\n }\n\n // Use the selection start if the end doesn't exist or they're reversed\n if (!this.selectionEnd || this.areSelectionValuesReversed()) {\n return [this.selectionStart[0] + this.selectionStartLength, this.selectionStart[1]];\n }\n\n // Ensure the the word/line is selected after a double/triple click\n if (this.selectionStartLength) {\n // Select the larger of the two when start and end are on the same line\n if (this.selectionEnd[1] === this.selectionStart[1]) {\n return [Math.max(this.selectionStart[0] + this.selectionStartLength, this.selectionEnd[0]), this.selectionEnd[1]];\n }\n }\n return this.selectionEnd;\n }\n\n /**\n * Returns whether the selection start and end are reversed.\n */\n public areSelectionValuesReversed(): boolean {\n const start = this.selectionStart;\n const end = this.selectionEnd;\n return start[1] > end[1] || (start[1] === end[1] && start[0] > end[0]);\n }\n\n /**\n * Handle the buffer being trimmed, adjust the selection position.\n * @param amount The amount the buffer is being trimmed.\n * @return Whether a refresh is necessary.\n */\n public onTrim(amount: number): boolean {\n // Adjust the selection position based on the trimmed amount.\n if (this.selectionStart) {\n this.selectionStart[1] -= amount;\n }\n if (this.selectionEnd) {\n this.selectionEnd[1] -= amount;\n }\n\n // The selection has moved off the buffer, clear it.\n if (this.selectionEnd && this.selectionEnd[1] < 0) {\n this.clearSelection();\n return true;\n }\n\n // If the selection start is trimmed, ensure the start column is 0.\n if (this.selectionStart && this.selectionStart[1] < 0) {\n this.selectionStart[1] = 0;\n }\n return false;\n }\n}\n","/**\n * @license MIT\n */\n\nimport * as Mouse from './utils/Mouse';\nimport * as Browser from './utils/Browser';\nimport { CharMeasure } from './utils/CharMeasure';\nimport { CircularList } from './utils/CircularList';\nimport { EventEmitter } from './EventEmitter';\nimport { ITerminal, ICircularList } from './Interfaces';\nimport { SelectionModel } from './SelectionModel';\nimport { translateBufferLineToString } from './utils/BufferLine';\n\n/**\n * The number of pixels the mouse needs to be above or below the viewport in\n * order to scroll at the maximum speed.\n */\nconst DRAG_SCROLL_MAX_THRESHOLD = 50;\n\n/**\n * The maximum scrolling speed\n */\nconst DRAG_SCROLL_MAX_SPEED = 15;\n\n/**\n * The number of milliseconds between drag scroll updates.\n */\nconst DRAG_SCROLL_INTERVAL = 50;\n\n/**\n * A string containing all characters that are considered word separated by the\n * double click to select work logic.\n */\nconst WORD_SEPARATORS = ' ()[]{}\\'\"';\n\n// TODO: Move these constants elsewhere, they belong in a buffer or buffer\n// data/line class.\nconst LINE_DATA_CHAR_INDEX = 1;\nconst LINE_DATA_WIDTH_INDEX = 2;\n\nconst NON_BREAKING_SPACE_CHAR = String.fromCharCode(160);\nconst ALL_NON_BREAKING_SPACE_REGEX = new RegExp(NON_BREAKING_SPACE_CHAR, 'g');\n\n/**\n * Represents a position of a word on a line.\n */\ninterface IWordPosition {\n start: number;\n length: number;\n}\n\n/**\n * A selection mode, this drives how the selection behaves on mouse move.\n */\nenum SelectionMode {\n NORMAL,\n WORD,\n LINE\n}\n\n/**\n * A class that manages the selection of the terminal. With help from\n * SelectionModel, SelectionManager handles with all logic associated with\n * dealing with the selection, including handling mouse interaction, wide\n * characters and fetching the actual text within the selection. Rendering is\n * not handled by the SelectionManager but a 'refresh' event is fired when the\n * selection is ready to be redrawn.\n */\nexport class SelectionManager extends EventEmitter {\n protected _model: SelectionModel;\n\n /**\n * The amount to scroll every drag scroll update (depends on how far the mouse\n * drag is above or below the terminal).\n */\n private _dragScrollAmount: number;\n\n /**\n * The current selection mode.\n */\n private _activeSelectionMode: SelectionMode;\n\n /**\n * A setInterval timer that is active while the mouse is down whose callback\n * scrolls the viewport when necessary.\n */\n private _dragScrollIntervalTimer: NodeJS.Timer;\n\n /**\n * The animation frame ID used for refreshing the selection.\n */\n private _refreshAnimationFrame: number;\n\n /**\n * Whether selection is enabled.\n */\n private _enabled = true;\n\n private _mouseMoveListener: EventListener;\n private _mouseUpListener: EventListener;\n\n constructor(\n private _terminal: ITerminal,\n private _buffer: ICircularList<[number, string, number][]>,\n private _rowContainer: HTMLElement,\n private _charMeasure: CharMeasure\n ) {\n super();\n this._initListeners();\n this.enable();\n\n this._model = new SelectionModel(_terminal);\n this._activeSelectionMode = SelectionMode.NORMAL;\n }\n\n /**\n * Initializes listener variables.\n */\n private _initListeners() {\n this._mouseMoveListener = event => this._onMouseMove(<MouseEvent>event);\n this._mouseUpListener = event => this._onMouseUp(<MouseEvent>event);\n\n this._rowContainer.addEventListener('mousedown', event => this._onMouseDown(<MouseEvent>event));\n\n // Only adjust the selection on trim, shiftElements is rarely used (only in\n // reverseIndex) and delete in a splice is only ever used when the same\n // number of elements was just added. Given this is could actually be\n // beneficial to leave the selection as is for these cases.\n this._buffer.on('trim', (amount: number) => this._onTrim(amount));\n }\n\n /**\n * Disables the selection manager. This is useful for when terminal mouse\n * are enabled.\n */\n public disable() {\n this.clearSelection();\n this._enabled = false;\n }\n\n /**\n * Enable the selection manager.\n */\n public enable() {\n this._enabled = true;\n }\n\n /**\n * Sets the active buffer, this should be called when the alt buffer is\n * switched in or out.\n * @param buffer The active buffer.\n */\n public setBuffer(buffer: ICircularList<[number, string, number][]>): void {\n this._buffer = buffer;\n this.clearSelection();\n }\n\n public get selectionStart(): [number, number] { return this._model.finalSelectionStart; }\n public get selectionEnd(): [number, number] { return this._model.finalSelectionEnd; }\n\n /**\n * Gets whether there is an active text selection.\n */\n public get hasSelection(): boolean {\n const start = this._model.finalSelectionStart;\n const end = this._model.finalSelectionEnd;\n if (!start || !end) {\n return false;\n }\n return start[0] !== end[0] || start[1] !== end[1];\n }\n\n /**\n * Gets the text currently selected.\n */\n public get selectionText(): string {\n const start = this._model.finalSelectionStart;\n const end = this._model.finalSelectionEnd;\n if (!start || !end) {\n return '';\n }\n\n // Get first row\n const startRowEndCol = start[1] === end[1] ? end[0] : null;\n let result: string[] = [];\n result.push(translateBufferLineToString(this._buffer.get(start[1]), true, start[0], startRowEndCol));\n\n // Get middle rows\n for (let i = start[1] + 1; i <= end[1] - 1; i++) {\n const bufferLine = this._buffer.get(i);\n const lineText = translateBufferLineToString(bufferLine, true);\n if ((<any>bufferLine).isWrapped) {\n result[result.length - 1] += lineText;\n } else {\n result.push(lineText);\n }\n }\n\n // Get final row\n if (start[1] !== end[1]) {\n const bufferLine = this._buffer.get(end[1]);\n const lineText = translateBufferLineToString(bufferLine, true, 0, end[0]);\n if ((<any>bufferLine).isWrapped) {\n result[result.length - 1] += lineText;\n } else {\n result.push(lineText);\n }\n }\n\n // Format string by replacing non-breaking space chars with regular spaces\n // and joining the array into a multi-line string.\n const formattedResult = result.map(line => {\n return line.replace(ALL_NON_BREAKING_SPACE_REGEX, ' ');\n }).join(Browser.isMSWindows ? '\\r\\n' : '\\n');\n\n return formattedResult;\n }\n\n /**\n * Clears the current terminal selection.\n */\n public clearSelection(): void {\n this._model.clearSelection();\n this._removeMouseDownListeners();\n this.refresh();\n }\n\n /**\n * Queues a refresh, redrawing the selection on the next opportunity.\n * @param isNewSelection Whether the selection should be registered as a new\n * selection on Linux.\n */\n public refresh(isNewSelection?: boolean): void {\n // Queue the refresh for the renderer\n if (!this._refreshAnimationFrame) {\n this._refreshAnimationFrame = window.requestAnimationFrame(() => this._refresh());\n }\n\n // If the platform is Linux and the refresh call comes from a mouse event,\n // we need to update the selection for middle click to paste selection.\n if (Browser.isLinux && isNewSelection) {\n const selectionText = this.selectionText;\n if (selectionText.length) {\n this.emit('newselection', this.selectionText);\n }\n }\n }\n\n /**\n * Fires the refresh event, causing consumers to pick it up and redraw the\n * selection state.\n */\n private _refresh(): void {\n this._refreshAnimationFrame = null;\n this.emit('refresh', { start: this._model.finalSelectionStart, end: this._model.finalSelectionEnd });\n }\n\n /**\n * Selects all text within the terminal.\n */\n public selectAll(): void {\n this._model.isSelectAllActive = true;\n this.refresh();\n }\n\n /**\n * Handle the buffer being trimmed, adjust the selection position.\n * @param amount The amount the buffer is being trimmed.\n */\n private _onTrim(amount: number) {\n const needsRefresh = this._model.onTrim(amount);\n if (needsRefresh) {\n this.refresh();\n }\n }\n\n /**\n * Gets the 0-based [x, y] buffer coordinates of the current mouse event.\n * @param event The mouse event.\n */\n private _getMouseBufferCoords(event: MouseEvent): [number, number] {\n const coords = Mouse.getCoords(event, this._rowContainer, this._charMeasure, this._terminal.cols, this._terminal.rows, true);\n if (!coords) {\n return null;\n }\n\n // Convert to 0-based\n coords[0]--;\n coords[1]--;\n // Convert viewport coords to buffer coords\n coords[1] += this._terminal.buffer.ydisp;\n return coords;\n }\n\n /**\n * Gets the amount the viewport should be scrolled based on how far out of the\n * terminal the mouse is.\n * @param event The mouse event.\n */\n private _getMouseEventScrollAmount(event: MouseEvent): number {\n let offset = Mouse.getCoordsRelativeToElement(event, this._rowContainer)[1];\n const terminalHeight = this._terminal.rows * this._charMeasure.height;\n if (offset >= 0 && offset <= terminalHeight) {\n return 0;\n }\n if (offset > terminalHeight) {\n offset -= terminalHeight;\n }\n\n offset = Math.min(Math.max(offset, -DRAG_SCROLL_MAX_THRESHOLD), DRAG_SCROLL_MAX_THRESHOLD);\n offset /= DRAG_SCROLL_MAX_THRESHOLD;\n return (offset / Math.abs(offset)) + Math.round(offset * (DRAG_SCROLL_MAX_SPEED - 1));\n }\n\n /**\n * Handles te mousedown event, setting up for a new selection.\n * @param event The mousedown event.\n */\n private _onMouseDown(event: MouseEvent) {\n // If we have selection, we want the context menu on right click even if the\n // terminal is in mouse mode.\n if (event.button === 2 && this.hasSelection) {\n event.stopPropagation();\n return;\n }\n\n // Only action the primary button\n if (event.button !== 0) {\n return;\n }\n\n // Allow selection when using a specific modifier key, even when disabled\n if (!this._enabled) {\n const shouldForceSelection = Browser.isMac && event.altKey;\n\n if (!shouldForceSelection) {\n return;\n }\n\n // Don't send the mouse down event to the current process, we want to select\n event.stopPropagation();\n }\n\n // Tell the browser not to start a regular selection\n event.preventDefault();\n\n // Reset drag scroll state\n this._dragScrollAmount = 0;\n\n if (this._enabled && event.shiftKey) {\n this._onIncrementalClick(event);\n } else {\n if (event.detail === 1) {\n this._onSingleClick(event);\n } else if (event.detail === 2) {\n this._onDoubleClick(event);\n } else if (event.detail === 3) {\n this._onTripleClick(event);\n }\n }\n\n this._addMouseDownListeners();\n this.refresh(true);\n }\n\n /**\n * Adds listeners when mousedown is triggered.\n */\n private _addMouseDownListeners(): void {\n // Listen on the document so that dragging outside of viewport works\n this._rowContainer.ownerDocument.addEventListener('mousemove', this._mouseMoveListener);\n this._rowContainer.ownerDocument.addEventListener('mouseup', this._mouseUpListener);\n this._dragScrollIntervalTimer = setInterval(() => this._dragScroll(), DRAG_SCROLL_INTERVAL);\n }\n\n /**\n * Removes the listeners that are registered when mousedown is triggered.\n */\n private _removeMouseDownListeners(): void {\n this._rowContainer.ownerDocument.removeEventListener('mousemove', this._mouseMoveListener);\n this._rowContainer.ownerDocument.removeEventListener('mouseup', this._mouseUpListener);\n clearInterval(this._dragScrollIntervalTimer);\n this._dragScrollIntervalTimer = null;\n }\n\n /**\n * Performs an incremental click, setting the selection end position to the mouse\n * position.\n * @param event The mouse event.\n */\n private _onIncrementalClick(event: MouseEvent): void {\n if (this._model.selectionStart) {\n this._model.selectionEnd = this._getMouseBufferCoords(event);\n }\n }\n\n /**\n * Performs a single click, resetting relevant state and setting the selection\n * start position.\n * @param event The mouse event.\n */\n private _onSingleClick(event: MouseEvent): void {\n this._model.selectionStartLength = 0;\n this._model.isSelectAllActive = false;\n this._activeSelectionMode = SelectionMode.NORMAL;\n\n // Initialize the new selection\n this._model.selectionStart = this._getMouseBufferCoords(event);\n if (!this._model.selectionStart) {\n return;\n }\n this._model.selectionEnd = null;\n\n // Ensure the line exists\n const line = this._buffer.get(this._model.selectionStart[1]);\n if (!line) {\n return;\n }\n\n // If the mouse is over the second half of a wide character, adjust the\n // selection to cover the whole character\n const char = line[this._model.selectionStart[0]];\n if (char[LINE_DATA_WIDTH_INDEX] === 0) {\n this._model.selectionStart[0]++;\n }\n }\n\n /**\n * Performs a double click, selecting the current work.\n * @param event The mouse event.\n */\n private _onDoubleClick(event: MouseEvent): void {\n const coords = this._getMouseBufferCoords(event);\n if (coords) {\n this._activeSelectionMode = SelectionMode.WORD;\n this._selectWordAt(coords);\n }\n }\n\n /**\n * Performs a triple click, selecting the current line and activating line\n * select mode.\n * @param event The mouse event.\n */\n private _onTripleClick(event: MouseEvent): void {\n const coords = this._getMouseBufferCoords(event);\n if (coords) {\n this._activeSelectionMode = SelectionMode.LINE;\n this._selectLineAt(coords[1]);\n }\n }\n\n /**\n * Handles the mousemove event when the mouse button is down, recording the\n * end of the selection and refreshing the selection.\n * @param event The mousemove event.\n */\n private _onMouseMove(event: MouseEvent) {\n // Record the previous position so we know whether to redraw the selection\n // at the end.\n const previousSelectionEnd = this._model.selectionEnd ? [this._model.selectionEnd[0], this._model.selectionEnd[1]] : null;\n\n // Set the initial selection end based on the mouse coordinates\n this._model.selectionEnd = this._getMouseBufferCoords(event);\n if (!this._model.selectionEnd) {\n this.refresh(true);\n return;\n }\n\n // Select the entire line if line select mode is active.\n if (this._activeSelectionMode === SelectionMode.LINE) {\n if (this._model.selectionEnd[1] < this._model.selectionStart[1]) {\n this._model.selectionEnd[0] = 0;\n } else {\n this._model.selectionEnd[0] = this._terminal.cols;\n }\n } else if (this._activeSelectionMode === SelectionMode.WORD) {\n this._selectToWordAt(this._model.selectionEnd);\n }\n\n // Determine the amount of scrolling that will happen.\n this._dragScrollAmount = this._getMouseEventScrollAmount(event);\n\n // If the cursor was above or below the viewport, make sure it's at the\n // start or end of the viewport respectively.\n if (this._dragScrollAmount > 0) {\n this._model.selectionEnd[0] = this._terminal.cols - 1;\n } else if (this._dragScrollAmount < 0) {\n this._model.selectionEnd[0] = 0;\n }\n\n // If the character is a wide character include the cell to the right in the\n // selection. Note that selections at the very end of the line will never\n // have a character.\n if (this._model.selectionEnd[1] < this._buffer.length) {\n const char = this._buffer.get(this._model.selectionEnd[1])[this._model.selectionEnd[0]];\n if (char && char[2] === 0) {\n this._model.selectionEnd[0]++;\n }\n }\n\n // Only draw here if the selection changes.\n if (!previousSelectionEnd ||\n previousSelectionEnd[0] !== this._model.selectionEnd[0] ||\n previousSelectionEnd[1] !== this._model.selectionEnd[1]) {\n this.refresh(true);\n }\n }\n\n /**\n * The callback that occurs every DRAG_SCROLL_INTERVAL ms that does the\n * scrolling of the viewport.\n */\n private _dragScroll() {\n if (this._dragScrollAmount) {\n this._terminal.scrollDisp(this._dragScrollAmount, false);\n // Re-evaluate selection\n if (this._dragScrollAmount > 0) {\n this._model.selectionEnd = [this._terminal.cols - 1, this._terminal.buffer.ydisp + this._terminal.rows];\n } else {\n this._model.selectionEnd = [0, this._terminal.buffer.ydisp];\n }\n this.refresh();\n }\n }\n\n /**\n * Handles the mouseup event, removing the mousedown listeners.\n * @param event The mouseup event.\n */\n private _onMouseUp(event: MouseEvent) {\n this._removeMouseDownListeners();\n }\n\n /**\n * Converts a viewport column to the character index on the buffer line, the\n * latter takes into account wide characters.\n * @param coords The coordinates to find the 2 index for.\n */\n private _convertViewportColToCharacterIndex(bufferLine: any, coords: [number, number]): number {\n let charIndex = coords[0];\n for (let i = 0; coords[0] >= i; i++) {\n const char = bufferLine[i];\n if (char[LINE_DATA_WIDTH_INDEX] === 0) {\n charIndex--;\n }\n }\n return charIndex;\n }\n\n public setSelection(col: number, row: number, length: number): void {\n this._model.clearSelection();\n this._removeMouseDownListeners();\n this._model.selectionStart = [col, row];\n this._model.selectionStartLength = length;\n this.refresh();\n }\n\n /**\n * Gets positional information for the word at the coordinated specified.\n * @param coords The coordinates to get the word at.\n */\n private _getWordAt(coords: [number, number]): IWordPosition {\n const bufferLine = this._buffer.get(coords[1]);\n if (!bufferLine) {\n return null;\n }\n\n const line = translateBufferLineToString(bufferLine, false);\n\n // Get actual index, taking into consideration wide characters\n let endIndex = this._convertViewportColToCharacterIndex(bufferLine, coords);\n let startIndex = endIndex;\n\n // Record offset to be used later\n const charOffset = coords[0] - startIndex;\n let leftWideCharCount = 0;\n let rightWideCharCount = 0;\n\n if (line.charAt(startIndex) === ' ') {\n // Expand until non-whitespace is hit\n while (startIndex > 0 && line.charAt(startIndex - 1) === ' ') {\n startIndex--;\n }\n while (endIndex < line.length && line.charAt(endIndex + 1) === ' ') {\n endIndex++;\n }\n } else {\n // Expand until whitespace is hit. This algorithm works by scanning left\n // and right from the starting position, keeping both the index format\n // (line) and the column format (bufferLine) in sync. When a wide\n // character is hit, it is recorded and the column index is adjusted.\n let startCol = coords[0];\n let endCol = coords[0];\n // Consider the initial position, skip it and increment the wide char\n // variable\n if (bufferLine[startCol][LINE_DATA_WIDTH_INDEX] === 0) {\n leftWideCharCount++;\n startCol--;\n }\n if (bufferLine[endCol][LINE_DATA_WIDTH_INDEX] === 2) {\n rightWideCharCount++;\n endCol++;\n }\n // Expand the string in both directions until a space is hit\n while (startIndex > 0 && !this._isCharWordSeparator(line.charAt(startIndex - 1))) {\n if (bufferLine[startCol - 1][LINE_DATA_WIDTH_INDEX] === 0) {\n // If the next character is a wide char, record it and skip the column\n leftWideCharCount++;\n startCol--;\n }\n startIndex--;\n startCol--;\n }\n while (endIndex + 1 < line.length && !this._isCharWordSeparator(line.charAt(endIndex + 1))) {\n if (bufferLine[endCol + 1][LINE_DATA_WIDTH_INDEX] === 2) {\n // If the next character is a wide char, record it and skip the column\n rightWideCharCount++;\n endCol++;\n }\n endIndex++;\n endCol++;\n }\n }\n\n const start = startIndex + charOffset - leftWideCharCount;\n const length = Math.min(endIndex - startIndex + leftWideCharCount + rightWideCharCount + 1/*include endIndex char*/, this._terminal.cols);\n return { start, length };\n }\n\n /**\n * Selects the word at the coordinates specified.\n * @param coords The coordinates to get the word at.\n */\n protected _selectWordAt(coords: [number, number]): void {\n const wordPosition = this._getWordAt(coords);\n if (wordPosition) {\n this._model.selectionStart = [wordPosition.start, coords[1]];\n this._model.selectionStartLength = wordPosition.length;\n }\n }\n\n /**\n * Sets the selection end to the word at the coordinated specified.\n * @param coords The coordinates to get the word at.\n */\n private _selectToWordAt(coords: [number, number]): void {\n const wordPosition = this._getWordAt(coords);\n if (wordPosition) {\n this._model.selectionEnd = [this._model.areSelectionValuesReversed() ? wordPosition.start : (wordPosition.start + wordPosition.length), coords[1]];\n }\n }\n\n /**\n * Gets whether the character is considered a word separator by the select\n * word logic.\n * @param char The character to check.\n */\n private _isCharWordSeparator(char: string): boolean {\n return WORD_SEPARATORS.indexOf(char) >= 0;\n }\n\n /**\n * Selects the line specified.\n * @param line The line index.\n */\n protected _selectLineAt(line: number): void {\n this._model.selectionStart = [0, line];\n this._model.selectionStartLength = this._terminal.cols;\n }\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\nimport { DomElementObjectPool } from './utils/DomElementObjectPool';\n\n/**\n * The maximum number of refresh frames to skip when the write buffer is non-\n * empty. Note that these frames may be intermingled with frames that are\n * skipped via requestAnimationFrame's mechanism.\n */\nconst MAX_REFRESH_FRAME_SKIP = 5;\n\n/**\n * Flags used to render terminal text properly.\n */\nenum FLAGS {\n BOLD = 1,\n UNDERLINE = 2,\n BLINK = 4,\n INVERSE = 8,\n INVISIBLE = 16\n};\n\nlet brokenBold: boolean = null;\n\nexport class Renderer {\n /** A queue of the rows to be refreshed */\n private _refreshRowsQueue: {start: number, end: number}[] = [];\n private _refreshFramesSkipped = 0;\n private _refreshAnimationFrame = null;\n\n private _spanElementObjectPool = new DomElementObjectPool('span');\n\n constructor(private _terminal: ITerminal) {\n // Figure out whether boldness affects\n // the character width of monospace fonts.\n if (brokenBold === null) {\n brokenBold = checkBoldBroken((<any>this._terminal).element);\n }\n this._spanElementObjectPool = new DomElementObjectPool('span');\n\n // TODO: Pull more DOM interactions into Renderer.constructor, element for\n // example should be owned by Renderer (and also exposed by Terminal due to\n // to established public API).\n }\n\n /**\n * Queues a refresh between two rows (inclusive), to be done on next animation\n * frame.\n * @param {number} start The start row.\n * @param {number} end The end row.\n */\n public queueRefresh(start: number, end: number): void {\n this._refreshRowsQueue.push({ start: start, end: end });\n if (!this._refreshAnimationFrame) {\n this._refreshAnimationFrame = window.requestAnimationFrame(this._refreshLoop.bind(this));\n }\n }\n\n /**\n * Performs the refresh loop callback, calling refresh only if a refresh is\n * necessary before queueing up the next one.\n */\n private _refreshLoop(): void {\n // Skip MAX_REFRESH_FRAME_SKIP frames if the writeBuffer is non-empty as it\n // will need to be immediately refreshed anyway. This saves a lot of\n // rendering time as the viewport DOM does not need to be refreshed, no\n // scroll events, no layouts, etc.\n const skipFrame = this._terminal.writeBuffer.length > 0 && this._refreshFramesSkipped++ <= MAX_REFRESH_FRAME_SKIP;\n if (skipFrame) {\n this._refreshAnimationFrame = window.requestAnimationFrame(this._refreshLoop.bind(this));\n return;\n }\n\n this._refreshFramesSkipped = 0;\n let start;\n let end;\n if (this._refreshRowsQueue.length > 4) {\n // Just do a full refresh when 5+ refreshes are queued\n start = 0;\n end = this._terminal.rows - 1;\n } else {\n // Get start and end rows that need refreshing\n start = this._refreshRowsQueue[0].start;\n end = this._refreshRowsQueue[0].end;\n for (let i = 1; i < this._refreshRowsQueue.length; i++) {\n if (this._refreshRowsQueue[i].start < start) {\n start = this._refreshRowsQueue[i].start;\n }\n if (this._refreshRowsQueue[i].end > end) {\n end = this._refreshRowsQueue[i].end;\n }\n }\n }\n this._refreshRowsQueue = [];\n this._refreshAnimationFrame = null;\n this._refresh(start, end);\n }\n\n /**\n * Refreshes (re-renders) terminal content within two rows (inclusive)\n *\n * Rendering Engine:\n *\n * In the screen buffer, each character is stored as a an array with a character\n * and a 32-bit integer:\n * - First value: a utf-16 character.\n * - Second value:\n * - Next 9 bits: background color (0-511).\n * - Next 9 bits: foreground color (0-511).\n * - Next 14 bits: a mask for misc. flags:\n * - 1=bold\n * - 2=underline\n * - 4=blink\n * - 8=inverse\n * - 16=invisible\n *\n * @param {number} start The row to start from (between 0 and terminal's height terminal - 1)\n * @param {number} end The row to end at (between fromRow and terminal's height terminal - 1)\n */\n private _refresh(start: number, end: number): void {\n // If this is a big refresh, remove the terminal rows from the DOM for faster calculations\n let parent;\n if (end - start >= this._terminal.rows / 2) {\n parent = this._terminal.element.parentNode;\n if (parent) {\n this._terminal.element.removeChild(this._terminal.rowContainer);\n }\n }\n\n let width = this._terminal.cols;\n let y = start;\n\n if (end >= this._terminal.rows) {\n this._terminal.log('`end` is too large. Most likely a bad CSR.');\n end = this._terminal.rows - 1;\n }\n\n for (; y <= end; y++) {\n let row = y + this._terminal.buffer.ydisp;\n\n let line = this._terminal.buffer.lines.get(row);\n\n let x;\n if (this._terminal.buffer.y === y - (this._terminal.buffer.ybase - this._terminal.buffer.ydisp) &&\n this._terminal.cursorState &&\n !this._terminal.cursorHidden) {\n x = this._terminal.buffer.x;\n } else {\n x = -1;\n }\n\n let attr = this._terminal.defAttr;\n\n const documentFragment = document.createDocumentFragment();\n let innerHTML = '';\n let currentElement;\n\n // Return the row's spans to the pool\n while (this._terminal.children[y].children.length) {\n const child = this._terminal.children[y].children[0];\n this._terminal.children[y].removeChild(child);\n this._spanElementObjectPool.release(<HTMLElement>child);\n }\n\n for (let i = 0; i < width; i++) {\n // TODO: Could data be a more specific type?\n let data: any = line[i][0];\n const ch = line[i][1];\n const ch_width: any = line[i][2];\n const isCursor: boolean = i === x;\n if (!ch_width) {\n continue;\n }\n\n if (data !== attr || isCursor) {\n if (attr !== this._terminal.defAttr && !isCursor) {\n if (innerHTML) {\n currentElement.innerHTML = innerHTML;\n innerHTML = '';\n }\n documentFragment.appendChild(currentElement);\n currentElement = null;\n }\n if (data !== this._terminal.defAttr || isCursor) {\n if (innerHTML && !currentElement) {\n currentElement = this._spanElementObjectPool.acquire();\n }\n if (currentElement) {\n if (innerHTML) {\n currentElement.innerHTML = innerHTML;\n innerHTML = '';\n }\n documentFragment.appendChild(currentElement);\n }\n currentElement = this._spanElementObjectPool.acquire();\n\n let bg = data & 0x1ff;\n let fg = (data >> 9) & 0x1ff;\n let flags = data >> 18;\n\n if (isCursor) {\n currentElement.classList.add('reverse-video');\n currentElement.classList.add('terminal-cursor');\n }\n\n if (flags & FLAGS.BOLD) {\n if (!brokenBold) {\n currentElement.classList.add('xterm-bold');\n }\n // See: XTerm*boldColors\n if (fg < 8) {\n fg += 8;\n }\n }\n\n if (flags & FLAGS.UNDERLINE) {\n currentElement.classList.add('xterm-underline');\n }\n\n if (flags & FLAGS.BLINK) {\n currentElement.classList.add('xterm-blink');\n }\n\n // If inverse flag is on, then swap the foreground and background variables.\n if (flags & FLAGS.INVERSE) {\n let temp = bg;\n bg = fg;\n fg = temp;\n // Should inverse just be before the above boldColors effect instead?\n if ((flags & 1) && fg < 8) {\n fg += 8;\n }\n }\n\n if (flags & FLAGS.INVISIBLE && !isCursor) {\n currentElement.classList.add('xterm-hidden');\n }\n\n /**\n * Weird situation: Invert flag used black foreground and white background results\n * in invalid background color, positioned at the 256 index of the 256 terminal\n * color map. Pin the colors manually in such a case.\n *\n * Source: https://github.com/sourcelair/xterm.js/issues/57\n */\n if (flags & FLAGS.INVERSE) {\n if (bg === 257) {\n bg = 15;\n }\n if (fg === 256) {\n fg = 0;\n }\n }\n\n if (bg < 256) {\n currentElement.classList.add(`xterm-bg-color-${bg}`);\n }\n\n if (fg < 256) {\n currentElement.classList.add(`xterm-color-${fg}`);\n }\n\n }\n }\n\n if (ch_width === 2) {\n // Wrap wide characters so they're sized correctly. It's more difficult to release these\n // from the object pool so just create new ones via innerHTML.\n innerHTML += `<span class=\"xterm-wide-char\">${ch}</span>`;\n } else if (ch.charCodeAt(0) > 255) {\n // Wrap any non-wide unicode character as some fonts size them badly\n innerHTML += `<span class=\"xterm-normal-char\">${ch}</span>`;\n } else {\n switch (ch) {\n case '&':\n innerHTML += '&amp;';\n break;\n case '<':\n innerHTML += '&lt;';\n break;\n case '>':\n innerHTML += '&gt;';\n break;\n default:\n if (ch <= ' ') {\n innerHTML += '&nbsp;';\n } else {\n innerHTML += ch;\n }\n break;\n }\n }\n\n // The cursor needs its own element, therefore we set attr to -1\n // which will cause the next character to be rendered in a new element\n attr = isCursor ? -1 : data;\n\n }\n\n if (innerHTML && !currentElement) {\n currentElement = this._spanElementObjectPool.acquire();\n }\n if (currentElement) {\n if (innerHTML) {\n currentElement.innerHTML = innerHTML;\n innerHTML = '';\n }\n documentFragment.appendChild(currentElement);\n currentElement = null;\n }\n\n this._terminal.children[y].appendChild(documentFragment);\n }\n\n if (parent) {\n this._terminal.element.appendChild(this._terminal.rowContainer);\n }\n\n this._terminal.emit('refresh', {element: this._terminal.element, start: start, end: end});\n };\n\n /**\n * Refreshes the selection in the DOM.\n * @param start The selection start.\n * @param end The selection end.\n */\n public refreshSelection(start: [number, number], end: [number, number]) {\n // Remove all selections\n while (this._terminal.selectionContainer.children.length) {\n this._terminal.selectionContainer.removeChild(this._terminal.selectionContainer.children[0]);\n }\n\n // Selection does not exist\n if (!start || !end) {\n return;\n }\n\n // Translate from buffer position to viewport position\n const viewportStartRow = start[1] - this._terminal.buffer.ydisp;\n const viewportEndRow = end[1] - this._terminal.buffer.ydisp;\n const viewportCappedStartRow = Math.max(viewportStartRow, 0);\n const viewportCappedEndRow = Math.min(viewportEndRow, this._terminal.rows - 1);\n\n // No need to draw the selection\n if (viewportCappedStartRow >= this._terminal.rows || viewportCappedEndRow < 0) {\n return;\n }\n\n // Create the selections\n const documentFragment = document.createDocumentFragment();\n // Draw first row\n const startCol = viewportStartRow === viewportCappedStartRow ? start[0] : 0;\n const endCol = viewportCappedStartRow === viewportCappedEndRow ? end[0] : this._terminal.cols;\n documentFragment.appendChild(this._createSelectionElement(viewportCappedStartRow, startCol, endCol));\n // Draw middle rows\n const middleRowsCount = viewportCappedEndRow - viewportCappedStartRow - 1;\n documentFragment.appendChild(this._createSelectionElement(viewportCappedStartRow + 1, 0, this._terminal.cols, middleRowsCount));\n // Draw final row\n if (viewportCappedStartRow !== viewportCappedEndRow) {\n // Only draw viewportEndRow if it's not the same as viewporttartRow\n const endCol = viewportEndRow === viewportCappedEndRow ? end[0] : this._terminal.cols;\n documentFragment.appendChild(this._createSelectionElement(viewportCappedEndRow, 0, endCol));\n }\n this._terminal.selectionContainer.appendChild(documentFragment);\n }\n\n /**\n * Creates a selection element at the specified position.\n * @param row The row of the selection.\n * @param colStart The start column.\n * @param colEnd The end columns.\n */\n private _createSelectionElement(row: number, colStart: number, colEnd: number, rowCount: number = 1): HTMLElement {\n const element = document.createElement('div');\n element.style.height = `${rowCount * this._terminal.charMeasure.height}px`;\n element.style.top = `${row * this._terminal.charMeasure.height}px`;\n element.style.left = `${colStart * this._terminal.charMeasure.width}px`;\n element.style.width = `${this._terminal.charMeasure.width * (colEnd - colStart)}px`;\n return element;\n }\n}\n\n\n// If bold is broken, we can't use it in the terminal.\nfunction checkBoldBroken(terminal) {\n const document = terminal.ownerDocument;\n const el = document.createElement('span');\n el.innerHTML = 'hello world';\n terminal.appendChild(el);\n const w1 = el.offsetWidth;\n const h1 = el.offsetHeight;\n el.style.fontWeight = 'bold';\n const w2 = el.offsetWidth;\n const h2 = el.offsetHeight;\n terminal.removeChild(el);\n return w1 !== w2 || h1 !== h2;\n}\n","/**\n * @license MIT\n */\n\nimport { C0 } from './EscapeSequences';\nimport { IInputHandler } from './Interfaces';\nimport { CHARSETS, DEFAULT_CHARSET } from './Charsets';\n\nconst normalStateHandler: {[key: string]: (parser: Parser, handler: IInputHandler) => void} = {};\nnormalStateHandler[C0.BEL] = (parser, handler) => handler.bell();\nnormalStateHandler[C0.LF] = (parser, handler) => handler.lineFeed();\nnormalStateHandler[C0.VT] = normalStateHandler[C0.LF];\nnormalStateHandler[C0.FF] = normalStateHandler[C0.LF];\nnormalStateHandler[C0.CR] = (parser, handler) => handler.carriageReturn();\nnormalStateHandler[C0.BS] = (parser, handler) => handler.backspace();\nnormalStateHandler[C0.HT] = (parser, handler) => handler.tab();\nnormalStateHandler[C0.SO] = (parser, handler) => handler.shiftOut();\nnormalStateHandler[C0.SI] = (parser, handler) => handler.shiftIn();\nnormalStateHandler[C0.ESC] = (parser, handler) => parser.setState(ParserState.ESCAPED);\n\n// TODO: Remove terminal when parser owns params and currentParam\nconst escapedStateHandler: {[key: string]: (parser: Parser, terminal: any) => void} = {};\nescapedStateHandler['['] = (parser, terminal) => {\n // ESC [ Control Sequence Introducer (CSI is 0x9b)\n terminal.params = [];\n terminal.currentParam = 0;\n parser.setState(ParserState.CSI_PARAM);\n};\nescapedStateHandler[']'] = (parser, terminal) => {\n // ESC ] Operating System Command (OSC is 0x9d)\n terminal.params = [];\n terminal.currentParam = 0;\n parser.setState(ParserState.OSC);\n};\nescapedStateHandler['P'] = (parser, terminal) => {\n // ESC P Device Control String (DCS is 0x90)\n terminal.params = [];\n terminal.currentParam = 0;\n parser.setState(ParserState.DCS);\n};\nescapedStateHandler['_'] = (parser, terminal) => {\n // ESC _ Application Program Command ( APC is 0x9f).\n parser.setState(ParserState.IGNORE);\n};\nescapedStateHandler['^'] = (parser, terminal) => {\n // ESC ^ Privacy Message ( PM is 0x9e).\n parser.setState(ParserState.IGNORE);\n};\nescapedStateHandler['c'] = (parser, terminal) => {\n // ESC c Full Reset (RIS).\n terminal.reset();\n};\nescapedStateHandler['E'] = (parser, terminal) => {\n // ESC E Next Line ( NEL is 0x85).\n terminal.buffer.x = 0;\n terminal.index();\n parser.setState(ParserState.NORMAL);\n};\nescapedStateHandler['D'] = (parser, terminal) => {\n // ESC D Index ( IND is 0x84).\n terminal.index();\n parser.setState(ParserState.NORMAL);\n};\nescapedStateHandler['M'] = (parser, terminal) => {\n // ESC M Reverse Index ( RI is 0x8d).\n terminal.reverseIndex();\n parser.setState(ParserState.NORMAL);\n};\nescapedStateHandler['%'] = (parser, terminal) => {\n // ESC % Select default/utf-8 character set.\n // @ = default, G = utf-8\n terminal.setgLevel(0);\n terminal.setgCharset(0, DEFAULT_CHARSET); // US (default)\n parser.setState(ParserState.NORMAL);\n parser.skipNextChar();\n};\nescapedStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);\n\nconst csiParamStateHandler: {[key: string]: (parser: Parser) => void} = {};\ncsiParamStateHandler['?'] = (parser) => parser.setPrefix('?');\ncsiParamStateHandler['>'] = (parser) => parser.setPrefix('>');\ncsiParamStateHandler['!'] = (parser) => parser.setPrefix('!');\ncsiParamStateHandler['0'] = (parser) => parser.setParam(parser.getParam() * 10);\ncsiParamStateHandler['1'] = (parser) => parser.setParam(parser.getParam() * 10 + 1);\ncsiParamStateHandler['2'] = (parser) => parser.setParam(parser.getParam() * 10 + 2);\ncsiParamStateHandler['3'] = (parser) => parser.setParam(parser.getParam() * 10 + 3);\ncsiParamStateHandler['4'] = (parser) => parser.setParam(parser.getParam() * 10 + 4);\ncsiParamStateHandler['5'] = (parser) => parser.setParam(parser.getParam() * 10 + 5);\ncsiParamStateHandler['6'] = (parser) => parser.setParam(parser.getParam() * 10 + 6);\ncsiParamStateHandler['7'] = (parser) => parser.setParam(parser.getParam() * 10 + 7);\ncsiParamStateHandler['8'] = (parser) => parser.setParam(parser.getParam() * 10 + 8);\ncsiParamStateHandler['9'] = (parser) => parser.setParam(parser.getParam() * 10 + 9);\ncsiParamStateHandler['$'] = (parser) => parser.setPostfix('$');\ncsiParamStateHandler['\"'] = (parser) => parser.setPostfix('\"');\ncsiParamStateHandler[' '] = (parser) => parser.setPostfix(' ');\ncsiParamStateHandler['\\''] = (parser) => parser.setPostfix('\\'');\ncsiParamStateHandler[';'] = (parser) => parser.finalizeParam();\ncsiParamStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);\n\nconst csiStateHandler: {[key: string]: (handler: IInputHandler, params: number[], prefix: string, postfix: string, parser: Parser) => void} = {};\ncsiStateHandler['@'] = (handler, params, prefix) => handler.insertChars(params);\ncsiStateHandler['A'] = (handler, params, prefix) => handler.cursorUp(params);\ncsiStateHandler['B'] = (handler, params, prefix) => handler.cursorDown(params);\ncsiStateHandler['C'] = (handler, params, prefix) => handler.cursorForward(params);\ncsiStateHandler['D'] = (handler, params, prefix) => handler.cursorBackward(params);\ncsiStateHandler['E'] = (handler, params, prefix) => handler.cursorNextLine(params);\ncsiStateHandler['F'] = (handler, params, prefix) => handler.cursorPrecedingLine(params);\ncsiStateHandler['G'] = (handler, params, prefix) => handler.cursorCharAbsolute(params);\ncsiStateHandler['H'] = (handler, params, prefix) => handler.cursorPosition(params);\ncsiStateHandler['I'] = (handler, params, prefix) => handler.cursorForwardTab(params);\ncsiStateHandler['J'] = (handler, params, prefix) => handler.eraseInDisplay(params);\ncsiStateHandler['K'] = (handler, params, prefix) => handler.eraseInLine(params);\ncsiStateHandler['L'] = (handler, params, prefix) => handler.insertLines(params);\ncsiStateHandler['M'] = (handler, params, prefix) => handler.deleteLines(params);\ncsiStateHandler['P'] = (handler, params, prefix) => handler.deleteChars(params);\ncsiStateHandler['S'] = (handler, params, prefix) => handler.scrollUp(params);\ncsiStateHandler['T'] = (handler, params, prefix) => {\n if (params.length < 2 && !prefix) {\n handler.scrollDown(params);\n }\n};\ncsiStateHandler['X'] = (handler, params, prefix) => handler.eraseChars(params);\ncsiStateHandler['Z'] = (handler, params, prefix) => handler.cursorBackwardTab(params);\ncsiStateHandler['`'] = (handler, params, prefix) => handler.charPosAbsolute(params);\ncsiStateHandler['a'] = (handler, params, prefix) => handler.HPositionRelative(params);\ncsiStateHandler['b'] = (handler, params, prefix) => handler.repeatPrecedingCharacter(params);\ncsiStateHandler['c'] = (handler, params, prefix) => handler.sendDeviceAttributes(params);\ncsiStateHandler['d'] = (handler, params, prefix) => handler.linePosAbsolute(params);\ncsiStateHandler['e'] = (handler, params, prefix) => handler.VPositionRelative(params);\ncsiStateHandler['f'] = (handler, params, prefix) => handler.HVPosition(params);\ncsiStateHandler['g'] = (handler, params, prefix) => handler.tabClear(params);\ncsiStateHandler['h'] = (handler, params, prefix) => handler.setMode(params);\ncsiStateHandler['l'] = (handler, params, prefix) => handler.resetMode(params);\ncsiStateHandler['m'] = (handler, params, prefix) => handler.charAttributes(params);\ncsiStateHandler['n'] = (handler, params, prefix) => handler.deviceStatus(params);\ncsiStateHandler['p'] = (handler, params, prefix) => {\n switch (prefix) {\n case '!': handler.softReset(params); break;\n }\n};\ncsiStateHandler['q'] = (handler, params, prefix, postfix) => {\n if (postfix === ' ') {\n handler.setCursorStyle(params);\n }\n};\ncsiStateHandler['r'] = (handler, params) => handler.setScrollRegion(params);\ncsiStateHandler['s'] = (handler, params) => handler.saveCursor(params);\ncsiStateHandler['u'] = (handler, params) => handler.restoreCursor(params);\ncsiStateHandler[C0.CAN] = (handler, params, prefix, postfix, parser) => parser.setState(ParserState.NORMAL);\n\nenum ParserState {\n NORMAL = 0,\n ESCAPED = 1,\n CSI_PARAM = 2,\n CSI = 3,\n OSC = 4,\n CHARSET = 5,\n DCS = 6,\n IGNORE = 7\n}\n\n/**\n * The terminal's parser, all input into the terminal goes through the parser\n * which parses and defers the actual input handling the the IInputHandler\n * specified in the constructor.\n */\nexport class Parser {\n private _state: ParserState;\n private _position: number;\n\n // TODO: Remove terminal when handler can do everything\n constructor(\n private _inputHandler: IInputHandler,\n private _terminal: any\n ) {\n this._state = ParserState.NORMAL;\n }\n\n /**\n * Parse and handle data.\n *\n * @param data The data to parse.\n */\n public parse(data: string): ParserState {\n let l = data.length, j, cs, ch, code, low;\n\n if (this._terminal.debug) {\n this._terminal.log('data: ' + data);\n }\n\n this._position = 0;\n // apply leftover surrogate high from last write\n if (this._terminal.surrogate_high) {\n data = this._terminal.surrogate_high + data;\n this._terminal.surrogate_high = '';\n }\n\n for (; this._position < l; this._position++) {\n ch = data[this._position];\n\n // FIXME: higher chars than 0xa0 are not allowed in escape sequences\n // --> maybe move to default\n code = data.charCodeAt(this._position);\n if (0xD800 <= code && code <= 0xDBFF) {\n // we got a surrogate high\n // get surrogate low (next 2 bytes)\n low = data.charCodeAt(this._position + 1);\n if (isNaN(low)) {\n // end of data stream, save surrogate high\n this._terminal.surrogate_high = ch;\n continue;\n }\n code = ((code - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000;\n ch += data.charAt(this._position + 1);\n }\n // surrogate low - already handled above\n if (0xDC00 <= code && code <= 0xDFFF)\n continue;\n\n switch (this._state) {\n case ParserState.NORMAL:\n if (ch in normalStateHandler) {\n normalStateHandler[ch](this, this._inputHandler);\n } else {\n this._inputHandler.addChar(ch, code);\n }\n break;\n case ParserState.ESCAPED:\n if (ch in escapedStateHandler) {\n escapedStateHandler[ch](this, this._terminal);\n // Skip switch as it was just handled\n break;\n }\n switch (ch) {\n\n // ESC (,),*,+,-,. Designate G0-G2 Character Set.\n case '(': // <-- this seems to get all the attention\n case ')':\n case '*':\n case '+':\n case '-':\n case '.':\n switch (ch) {\n case '(':\n this._terminal.gcharset = 0;\n break;\n case ')':\n this._terminal.gcharset = 1;\n break;\n case '*':\n this._terminal.gcharset = 2;\n break;\n case '+':\n this._terminal.gcharset = 3;\n break;\n case '-':\n this._terminal.gcharset = 1;\n break;\n case '.':\n this._terminal.gcharset = 2;\n break;\n }\n this._state = ParserState.CHARSET;\n break;\n\n // Designate G3 Character Set (VT300).\n // A = ISO Latin-1 Supplemental.\n // Not implemented.\n case '/':\n this._terminal.gcharset = 3;\n this._state = ParserState.CHARSET;\n this._position--;\n break;\n\n // ESC N\n // Single Shift Select of G2 Character Set\n // ( SS2 is 0x8e). This affects next character only.\n case 'N':\n break;\n // ESC O\n // Single Shift Select of G3 Character Set\n // ( SS3 is 0x8f). This affects next character only.\n case 'O':\n break;\n // ESC n\n // Invoke the G2 Character Set as GL (LS2).\n case 'n':\n this._terminal.setgLevel(2);\n break;\n // ESC o\n // Invoke the G3 Character Set as GL (LS3).\n case 'o':\n this._terminal.setgLevel(3);\n break;\n // ESC |\n // Invoke the G3 Character Set as GR (LS3R).\n case '|':\n this._terminal.setgLevel(3);\n break;\n // ESC }\n // Invoke the G2 Character Set as GR (LS2R).\n case '}':\n this._terminal.setgLevel(2);\n break;\n // ESC ~\n // Invoke the G1 Character Set as GR (LS1R).\n case '~':\n this._terminal.setgLevel(1);\n break;\n\n // ESC 7 Save Cursor (DECSC).\n case '7':\n this._inputHandler.saveCursor();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC 8 Restore Cursor (DECRC).\n case '8':\n this._inputHandler.restoreCursor();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC # 3 DEC line height/width\n case '#':\n this._state = ParserState.NORMAL;\n this._position++;\n break;\n\n // ESC H Tab Set (HTS is 0x88).\n case 'H':\n this._terminal.tabSet();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC = Application Keypad (DECKPAM).\n case '=':\n this._terminal.log('Serial port requested application keypad.');\n this._terminal.applicationKeypad = true;\n this._terminal.viewport.syncScrollArea();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC > Normal Keypad (DECKPNM).\n case '>':\n this._terminal.log('Switching back to normal keypad.');\n this._terminal.applicationKeypad = false;\n this._terminal.viewport.syncScrollArea();\n this._state = ParserState.NORMAL;\n break;\n\n default:\n this._state = ParserState.NORMAL;\n this._terminal.error('Unknown ESC control: %s.', ch);\n break;\n }\n break;\n\n case ParserState.CHARSET:\n if (ch in CHARSETS) {\n cs = CHARSETS[ch];\n if (ch === '/') { // ISOLatin is actually /A\n this.skipNextChar();\n }\n } else {\n cs = DEFAULT_CHARSET;\n }\n this._terminal.setgCharset(this._terminal.gcharset, cs);\n this._terminal.gcharset = null;\n this._state = ParserState.NORMAL;\n break;\n\n case ParserState.OSC:\n // OSC Ps ; Pt ST\n // OSC Ps ; Pt BEL\n // Set Text Parameters.\n if (ch === C0.ESC || ch === C0.BEL) {\n if (ch === C0.ESC) this._position++;\n\n this._terminal.params.push(this._terminal.currentParam);\n\n switch (this._terminal.params[0]) {\n case 0:\n case 1:\n case 2:\n if (this._terminal.params[1]) {\n this._terminal.title = this._terminal.params[1];\n this._terminal.handleTitle(this._terminal.title);\n }\n break;\n case 3:\n // set X property\n break;\n case 4:\n case 5:\n // change dynamic colors\n break;\n case 10:\n case 11:\n case 12:\n case 13:\n case 14:\n case 15:\n case 16:\n case 17:\n case 18:\n case 19:\n // change dynamic ui colors\n break;\n case 46:\n // change log file\n break;\n case 50:\n // dynamic font\n break;\n case 51:\n // emacs shell\n break;\n case 52:\n // manipulate selection data\n break;\n case 104:\n case 105:\n case 110:\n case 111:\n case 112:\n case 113:\n case 114:\n case 115:\n case 116:\n case 117:\n case 118:\n // reset colors\n break;\n }\n\n this._terminal.params = [];\n this._terminal.currentParam = 0;\n this._state = ParserState.NORMAL;\n } else {\n if (!this._terminal.params.length) {\n if (ch >= '0' && ch <= '9') {\n this._terminal.currentParam =\n this._terminal.currentParam * 10 + ch.charCodeAt(0) - 48;\n } else if (ch === ';') {\n this._terminal.params.push(this._terminal.currentParam);\n this._terminal.currentParam = '';\n }\n } else {\n this._terminal.currentParam += ch;\n }\n }\n break;\n\n case ParserState.CSI_PARAM:\n if (ch in csiParamStateHandler) {\n csiParamStateHandler[ch](this);\n break;\n }\n this.finalizeParam();\n // Fall through the CSI as this character should be the CSI code.\n this._state = ParserState.CSI;\n\n case ParserState.CSI:\n if (ch in csiStateHandler) {\n if (this._terminal.debug) {\n this._terminal.log(`CSI ${this._terminal.prefix ? this._terminal.prefix : ''} ${this._terminal.params ? this._terminal.params.join(';') : ''} ${this._terminal.postfix ? this._terminal.postfix : ''} ${ch}`);\n }\n csiStateHandler[ch](this._inputHandler, this._terminal.params, this._terminal.prefix, this._terminal.postfix, this);\n } else {\n this._terminal.error('Unknown CSI code: %s.', ch);\n }\n\n this._state = ParserState.NORMAL;\n this._terminal.prefix = '';\n this._terminal.postfix = '';\n break;\n\n case ParserState.DCS:\n if (ch === C0.ESC || ch === C0.BEL) {\n if (ch === C0.ESC) this._position++;\n let pt;\n let valid: boolean;\n\n switch (this._terminal.prefix) {\n // User-Defined Keys (DECUDK).\n case '':\n break;\n\n // Request Status String (DECRQSS).\n // test: echo -e '\\eP$q\"p\\e\\\\'\n case '$q':\n pt = this._terminal.currentParam;\n valid = false;\n\n switch (pt) {\n // DECSCA\n case '\"q':\n pt = '0\"q';\n break;\n\n // DECSCL\n case '\"p':\n pt = '61\"p';\n break;\n\n // DECSTBM\n case 'r':\n pt = ''\n + (this._terminal.buffer.scrollTop + 1)\n + ';'\n + (this._terminal.buffer.scrollBottom + 1)\n + 'r';\n break;\n\n // SGR\n case 'm':\n pt = '0m';\n break;\n\n default:\n this._terminal.error('Unknown DCS Pt: %s.', pt);\n pt = '';\n break;\n }\n\n this._terminal.send(C0.ESC + 'P' + +valid + '$r' + pt + C0.ESC + '\\\\');\n break;\n\n // Set Termcap/Terminfo Data (xterm, experimental).\n case '+p':\n break;\n\n // Request Termcap/Terminfo String (xterm, experimental)\n // Regular xterm does not even respond to this sequence.\n // This can cause a small glitch in vim.\n // test: echo -ne '\\eP+q6b64\\e\\\\'\n case '+q':\n pt = this._terminal.currentParam;\n valid = false;\n\n this._terminal.send(C0.ESC + 'P' + +valid + '+r' + pt + C0.ESC + '\\\\');\n break;\n\n default:\n this._terminal.error('Unknown DCS prefix: %s.', this._terminal.prefix);\n break;\n }\n\n this._terminal.currentParam = 0;\n this._terminal.prefix = '';\n this._state = ParserState.NORMAL;\n } else if (!this._terminal.currentParam) {\n if (!this._terminal.prefix && ch !== '$' && ch !== '+') {\n this._terminal.currentParam = ch;\n } else if (this._terminal.prefix.length === 2) {\n this._terminal.currentParam = ch;\n } else {\n this._terminal.prefix += ch;\n }\n } else {\n this._terminal.currentParam += ch;\n }\n break;\n\n case ParserState.IGNORE:\n // For PM and APC.\n if (ch === C0.ESC || ch === C0.BEL) {\n if (ch === C0.ESC) this._position++;\n this._state = ParserState.NORMAL;\n }\n break;\n }\n }\n return this._state;\n }\n\n /**\n * Set the parser's current parsing state.\n *\n * @param state The new state.\n */\n public setState(state: ParserState): void {\n this._state = state;\n }\n\n /**\n * Sets the parsier's current prefix. CSI codes can have prefixes of '?', '>'\n * or '!'.\n *\n * @param prefix The prefix.\n */\n public setPrefix(prefix: string): void {\n this._terminal.prefix = prefix;\n }\n\n /**\n * Sets the parsier's current prefix. CSI codes can have postfixes of '$',\n * '\"', ' ', '\\''.\n *\n * @param postfix The postfix.\n */\n public setPostfix(postfix: string): void {\n this._terminal.postfix = postfix;\n }\n\n /**\n * Sets the parser's current parameter.\n *\n * @param param the parameter.\n */\n public setParam(param: number) {\n this._terminal.currentParam = param;\n }\n\n /**\n * Gets the parser's current parameter.\n */\n public getParam(): number {\n return this._terminal.currentParam;\n }\n\n /**\n * Finalizes the parser's current parameter, adding it to the list of\n * parameters and setting the new current parameter to 0.\n */\n public finalizeParam(): void {\n this._terminal.params.push(this._terminal.currentParam);\n this._terminal.currentParam = 0;\n }\n\n /**\n * Tell the parser to skip the next character.\n */\n public skipNextChar(): void {\n this._position++;\n }\n\n /**\n * Tell the parser to repeat parsing the current character (for example if it\n * needs parsing using a different state.\n */\n // public repeatChar(): void {\n // this._position--;\n // }\n}\n","/**\n * @license MIT\n */\n\nimport { LinkMatcherOptions } from './Interfaces';\nimport { LinkMatcher, LinkMatcherHandler, LinkMatcherValidationCallback } from './Types';\n\nconst INVALID_LINK_CLASS = 'xterm-invalid-link';\n\nconst protocolClause = '(https?:\\\\/\\\\/)';\nconst domainCharacterSet = '[\\\\da-z\\\\.-]+';\nconst negatedDomainCharacterSet = '[^\\\\da-z\\\\.-]+';\nconst domainBodyClause = '(' + domainCharacterSet + ')';\nconst tldClause = '([a-z\\\\.]{2,6})';\nconst ipClause = '((\\\\d{1,3}\\\\.){3}\\\\d{1,3})';\nconst localHostClause = '(localhost)';\nconst portClause = '(:\\\\d{1,5})';\nconst hostClause = '((' + domainBodyClause + '\\\\.' + tldClause + ')|' + ipClause + '|' + localHostClause + ')' + portClause + '?';\nconst pathClause = '(\\\\/[\\\\/\\\\w\\\\.\\\\-%~]*)*';\nconst queryStringHashFragmentCharacterSet = '[0-9\\\\w\\\\[\\\\]\\\\(\\\\)\\\\/\\\\?\\\\!#@$%&\\'*+,:;~\\\\=\\\\.\\\\-]*';\nconst queryStringClause = '(\\\\?' + queryStringHashFragmentCharacterSet + ')?';\nconst hashFragmentClause = '(#' + queryStringHashFragmentCharacterSet + ')?';\nconst negatedPathCharacterSet = '[^\\\\/\\\\w\\\\.\\\\-%]+';\nconst bodyClause = hostClause + pathClause + queryStringClause + hashFragmentClause;\nconst start = '(?:^|' + negatedDomainCharacterSet + ')(';\nconst end = ')($|' + negatedPathCharacterSet + ')';\nconst strictUrlRegex = new RegExp(start + protocolClause + bodyClause + end);\n\n/**\n * The ID of the built in http(s) link matcher.\n */\nconst HYPERTEXT_LINK_MATCHER_ID = 0;\n\n/**\n * The Linkifier applies links to rows shortly after they have been refreshed.\n */\nexport class Linkifier {\n /**\n * The time to wait after a row is changed before it is linkified. This prevents\n * the costly operation of searching every row multiple times, potentially a\n * huge amount of times.\n */\n protected static TIME_BEFORE_LINKIFY = 200;\n\n protected _linkMatchers: LinkMatcher[];\n\n private _document: Document;\n private _rows: HTMLElement[];\n private _rowTimeoutIds: number[];\n private _nextLinkMatcherId = HYPERTEXT_LINK_MATCHER_ID;\n\n constructor() {\n this._rowTimeoutIds = [];\n this._linkMatchers = [];\n this.registerLinkMatcher(strictUrlRegex, null, { matchIndex: 1 });\n }\n\n /**\n * Attaches the linkifier to the DOM, enabling linkification.\n * @param document The document object.\n * @param rows The array of rows to apply links to.\n */\n public attachToDom(document: Document, rows: HTMLElement[]) {\n this._document = document;\n this._rows = rows;\n }\n\n /**\n * Queues a row for linkification.\n * @param {number} rowIndex The index of the row to linkify.\n */\n public linkifyRow(rowIndex: number): void {\n // Don't attempt linkify if not yet attached to DOM\n if (!this._document) {\n return;\n }\n\n const timeoutId = this._rowTimeoutIds[rowIndex];\n if (timeoutId) {\n clearTimeout(timeoutId);\n }\n this._rowTimeoutIds[rowIndex] = setTimeout(this._linkifyRow.bind(this, rowIndex), Linkifier.TIME_BEFORE_LINKIFY);\n }\n\n /**\n * Attaches a handler for hypertext links, overriding default <a> behavior\n * for standard http(s) links.\n * @param {LinkHandler} handler The handler to use, this can be cleared with\n * null.\n */\n public setHypertextLinkHandler(handler: LinkMatcherHandler): void {\n this._linkMatchers[HYPERTEXT_LINK_MATCHER_ID].handler = handler;\n }\n\n /**\n * Attaches a validation callback for hypertext links.\n * @param {LinkMatcherValidationCallback} callback The callback to use, this\n * can be cleared with null.\n */\n public setHypertextValidationCallback(callback: LinkMatcherValidationCallback): void {\n this._linkMatchers[HYPERTEXT_LINK_MATCHER_ID].validationCallback = callback;\n }\n\n /**\n * Registers a link matcher, allowing custom link patterns to be matched and\n * handled.\n * @param {RegExp} regex The regular expression to search for, specifically\n * this searches the textContent of the rows. You will want to use \\s to match\n * a space ' ' character for example.\n * @param {LinkHandler} handler The callback when the link is called.\n * @param {LinkMatcherOptions} [options] Options for the link matcher.\n * @return {number} The ID of the new matcher, this can be used to deregister.\n */\n public registerLinkMatcher(regex: RegExp, handler: LinkMatcherHandler, options: LinkMatcherOptions = {}): number {\n if (this._nextLinkMatcherId !== HYPERTEXT_LINK_MATCHER_ID && !handler) {\n throw new Error('handler must be defined');\n }\n const matcher: LinkMatcher = {\n id: this._nextLinkMatcherId++,\n regex,\n handler,\n matchIndex: options.matchIndex,\n validationCallback: options.validationCallback,\n priority: options.priority || 0\n };\n this._addLinkMatcherToList(matcher);\n return matcher.id;\n }\n\n /**\n * Inserts a link matcher to the list in the correct position based on the\n * priority of each link matcher. New link matchers of equal priority are\n * considered after older link matchers.\n * @param matcher The link matcher to be added.\n */\n private _addLinkMatcherToList(matcher: LinkMatcher): void {\n if (this._linkMatchers.length === 0) {\n this._linkMatchers.push(matcher);\n return;\n }\n\n for (let i = this._linkMatchers.length - 1; i >= 0; i--) {\n if (matcher.priority <= this._linkMatchers[i].priority) {\n this._linkMatchers.splice(i + 1, 0, matcher);\n return;\n }\n }\n\n this._linkMatchers.splice(0, 0, matcher);\n }\n\n /**\n * Deregisters a link matcher if it has been registered.\n * @param {number} matcherId The link matcher's ID (returned after register)\n * @return {boolean} Whether a link matcher was found and deregistered.\n */\n public deregisterLinkMatcher(matcherId: number): boolean {\n // ID 0 is the hypertext link matcher which cannot be deregistered\n for (let i = 1; i < this._linkMatchers.length; i++) {\n if (this._linkMatchers[i].id === matcherId) {\n this._linkMatchers.splice(i, 1);\n return true;\n }\n }\n return false;\n }\n\n /**\n * Linkifies a row.\n * @param {number} rowIndex The index of the row to linkify.\n */\n private _linkifyRow(rowIndex: number): void {\n const row = this._rows[rowIndex];\n if (!row) {\n return;\n }\n const text = row.textContent;\n for (let i = 0; i < this._linkMatchers.length; i++) {\n const matcher = this._linkMatchers[i];\n const linkElements = this._doLinkifyRow(row, matcher);\n if (linkElements.length > 0) {\n // Fire validation callback\n if (matcher.validationCallback) {\n for (let j = 0; j < linkElements.length; j++) {\n const element = linkElements[j];\n matcher.validationCallback(element.textContent, element, isValid => {\n if (!isValid) {\n element.classList.add(INVALID_LINK_CLASS);\n }\n });\n }\n }\n // Only allow a single LinkMatcher to trigger on any given row.\n return;\n }\n }\n }\n\n /**\n * Linkifies a row given a specific handler.\n * @param {HTMLElement} row The row to linkify.\n * @param {LinkMatcher} matcher The link matcher for this line.\n * @return The link element(s) that were added.\n */\n private _doLinkifyRow(row: HTMLElement, matcher: LinkMatcher): HTMLElement[] {\n // Iterate over nodes as we want to consider text nodes\n let result = [];\n const isHttpLinkMatcher = matcher.id === HYPERTEXT_LINK_MATCHER_ID;\n const nodes = row.childNodes;\n\n // Find the first match\n let match = row.textContent.match(matcher.regex);\n if (!match || match.length === 0) {\n return result;\n }\n let uri = match[typeof matcher.matchIndex !== 'number' ? 0 : matcher.matchIndex];\n // Set the next searches start index\n let rowStartIndex = match.index + uri.length;\n\n for (let i = 0; i < nodes.length; i++) {\n const node = nodes[i];\n const searchIndex = node.textContent.indexOf(uri);\n if (searchIndex >= 0) {\n const linkElement = this._createAnchorElement(uri, matcher.handler, isHttpLinkMatcher);\n if (node.textContent.length === uri.length) {\n // Matches entire string\n if (node.nodeType === 3 /*Node.TEXT_NODE*/) {\n this._replaceNode(node, linkElement);\n } else {\n const element = (<HTMLElement>node);\n if (element.nodeName === 'A') {\n // This row has already been linkified\n return result;\n }\n element.innerHTML = '';\n element.appendChild(linkElement);\n }\n } else if (node.childNodes.length > 1) {\n // Matches part of string in an element with multiple child nodes\n for (let j = 0; j < node.childNodes.length; j++) {\n const childNode = node.childNodes[j];\n const childSearchIndex = childNode.textContent.indexOf(uri);\n if (childSearchIndex !== -1) {\n // Match found in currentNode\n this._replaceNodeSubstringWithNode(childNode, linkElement, uri, childSearchIndex);\n // Don't need to count nodesAdded by replacing the node as this\n // is a child node, not a top-level node.\n break;\n }\n }\n } else {\n // Matches part of string in a single text node\n const nodesAdded = this._replaceNodeSubstringWithNode(node, linkElement, uri, searchIndex);\n // No need to consider the new nodes\n i += nodesAdded;\n }\n result.push(linkElement);\n\n // Find the next match\n match = row.textContent.substring(rowStartIndex).match(matcher.regex);\n if (!match || match.length === 0) {\n return result;\n }\n uri = match[typeof matcher.matchIndex !== 'number' ? 0 : matcher.matchIndex];\n rowStartIndex += match.index + uri.length;\n }\n }\n return result;\n }\n\n /**\n * Creates a link anchor element.\n * @param {string} uri The uri of the link.\n * @return {HTMLAnchorElement} The link.\n */\n private _createAnchorElement(uri: string, handler: LinkMatcherHandler, isHypertextLinkHandler: boolean): HTMLAnchorElement {\n const element = this._document.createElement('a');\n element.textContent = uri;\n element.draggable = false;\n if (isHypertextLinkHandler) {\n element.href = uri;\n // Force link on another tab so work is not lost\n element.target = '_blank';\n element.addEventListener('click', (event: MouseEvent) => {\n if (handler) {\n return handler(event, uri);\n }\n });\n } else {\n element.addEventListener('click', (event: MouseEvent) => {\n // Don't execute the handler if the link is flagged as invalid\n if (element.classList.contains(INVALID_LINK_CLASS)) {\n return;\n }\n return handler(event, uri);\n });\n }\n return element;\n }\n\n /**\n * Replace a node with 1 or more other nodes.\n * @param {Node} oldNode The node to replace.\n * @param {Node[]} newNodes The new nodes to insert in order.\n */\n private _replaceNode(oldNode: Node, ...newNodes: Node[]): void {\n const parent = oldNode.parentNode;\n for (let i = 0; i < newNodes.length; i++) {\n parent.insertBefore(newNodes[i], oldNode);\n }\n parent.removeChild(oldNode);\n }\n\n /**\n * Replace a substring within a node with a new node.\n * @param {Node} targetNode The target node; either a text node or a <span>\n * containing a single text node.\n * @param {Node} newNode The new node to insert.\n * @param {string} substring The substring to replace.\n * @param {number} substringIndex The index of the substring within the string.\n * @return The number of nodes to skip when searching for the next uri.\n */\n private _replaceNodeSubstringWithNode(targetNode: Node, newNode: Node, substring: string, substringIndex: number): number {\n // If the targetNode is a non-text node with a single child, make the child\n // the new targetNode.\n if (targetNode.childNodes.length === 1) {\n targetNode = targetNode.childNodes[0];\n }\n\n // The targetNode will be either a text node or a <span>. The text node\n // (targetNode or its only-child) needs to be replaced with newNode plus new\n // text nodes potentially on either side.\n if (targetNode.nodeType !== 3/*Node.TEXT_NODE*/) {\n throw new Error('targetNode must be a text node or only contain a single text node');\n }\n\n const fullText = targetNode.textContent;\n\n if (substringIndex === 0) {\n // Replace with <newNode><textnode>\n const rightText = fullText.substring(substring.length);\n const rightTextNode = this._document.createTextNode(rightText);\n this._replaceNode(targetNode, newNode, rightTextNode);\n return 0;\n }\n\n if (substringIndex === targetNode.textContent.length - substring.length) {\n // Replace with <textnode><newNode>\n const leftText = fullText.substring(0, substringIndex);\n const leftTextNode = this._document.createTextNode(leftText);\n this._replaceNode(targetNode, leftTextNode, newNode);\n return 0;\n }\n\n // Replace with <textnode><newNode><textnode>\n const leftText = fullText.substring(0, substringIndex);\n const leftTextNode = this._document.createTextNode(leftText);\n const rightText = fullText.substring(substringIndex + substring.length);\n const rightTextNode = this._document.createTextNode(rightText);\n this._replaceNode(targetNode, leftTextNode, newNode, rightTextNode);\n return 1;\n }\n}\n","/**\n * @license MIT\n */\n\nimport { IInputHandler, ITerminal } from './Interfaces';\nimport { C0 } from './EscapeSequences';\nimport { DEFAULT_CHARSET } from './Charsets';\n\n/**\n * The terminal's standard implementation of IInputHandler, this handles all\n * input from the Parser.\n *\n * Refer to http://invisible-island.net/xterm/ctlseqs/ctlseqs.html to understand\n * each function's header comment.\n */\nexport class InputHandler implements IInputHandler {\n // TODO: We want to type _terminal when it's pulled into TS\n constructor(private _terminal: any) { }\n\n public addChar(char: string, code: number): void {\n if (char >= ' ') {\n // calculate print space\n // expensive call, therefore we save width in line buffer\n const ch_width = wcwidth(code);\n\n if (this._terminal.charset && this._terminal.charset[char]) {\n char = this._terminal.charset[char];\n }\n\n let row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n // insert combining char in last cell\n // FIXME: needs handling after cursor jumps\n if (!ch_width && this._terminal.buffer.x) {\n // dont overflow left\n if (this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 1]) {\n if (!this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 1][2]) {\n\n // found empty cell after fullwidth, need to go 2 cells back\n if (this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 2])\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 2][1] += char;\n\n } else {\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 1][1] += char;\n }\n this._terminal.updateRange(this._terminal.buffer.y);\n }\n return;\n }\n\n // goto next line if ch would overflow\n // TODO: needs a global min terminal width of 2\n if (this._terminal.buffer.x + ch_width - 1 >= this._terminal.cols) {\n // autowrap - DECAWM\n if (this._terminal.wraparoundMode) {\n this._terminal.buffer.x = 0;\n this._terminal.buffer.y++;\n if (this._terminal.buffer.y > this._terminal.buffer.scrollBottom) {\n this._terminal.buffer.y--;\n this._terminal.scroll(true);\n } else {\n // The line already exists (eg. the initial viewport), mark it as a\n // wrapped line\n this._terminal.buffer.lines.get(this._terminal.buffer.y).isWrapped = true;\n }\n } else {\n if (ch_width === 2) // FIXME: check for xterm behavior\n return;\n }\n }\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n // insert mode: move characters to right\n if (this._terminal.insertMode) {\n // do this twice for a fullwidth char\n for (let moves = 0; moves < ch_width; ++moves) {\n // remove last cell, if it's width is 0\n // we have to adjust the second last cell as well\n const removed = this._terminal.buffer.lines.get(this._terminal.buffer.y + this._terminal.buffer.ybase).pop();\n if (removed[2] === 0\n && this._terminal.buffer.lines.get(row)[this._terminal.cols - 2]\n && this._terminal.buffer.lines.get(row)[this._terminal.cols - 2][2] === 2) {\n this._terminal.buffer.lines.get(row)[this._terminal.cols - 2] = [this._terminal.curAttr, ' ', 1];\n }\n\n // insert empty cell at cursor\n this._terminal.buffer.lines.get(row).splice(this._terminal.buffer.x, 0, [this._terminal.curAttr, ' ', 1]);\n }\n }\n\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x] = [this._terminal.curAttr, char, ch_width];\n this._terminal.buffer.x++;\n this._terminal.updateRange(this._terminal.buffer.y);\n\n // fullwidth char - set next cell width to zero and advance cursor\n if (ch_width === 2) {\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x] = [this._terminal.curAttr, '', 0];\n this._terminal.buffer.x++;\n }\n }\n }\n\n /**\n * BEL\n * Bell (Ctrl-G).\n */\n public bell(): void {\n if (!this._terminal.visualBell) {\n return;\n }\n this._terminal.element.style.borderColor = 'white';\n setTimeout(() => this._terminal.element.style.borderColor = '', 10);\n if (this._terminal.popOnBell) {\n this._terminal.focus();\n }\n }\n\n /**\n * LF\n * Line Feed or New Line (NL). (LF is Ctrl-J).\n */\n public lineFeed(): void {\n if (this._terminal.convertEol) {\n this._terminal.buffer.x = 0;\n }\n this._terminal.buffer.y++;\n if (this._terminal.buffer.y > this._terminal.buffer.scrollBottom) {\n this._terminal.buffer.y--;\n this._terminal.scroll();\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n /**\n * This event is emitted whenever the terminal outputs a LF or NL.\n *\n * @event lineFeed\n */\n this._terminal.emit('lineFeed');\n }\n\n /**\n * CR\n * Carriage Return (Ctrl-M).\n */\n public carriageReturn(): void {\n this._terminal.buffer.x = 0;\n }\n\n /**\n * BS\n * Backspace (Ctrl-H).\n */\n public backspace(): void {\n if (this._terminal.buffer.x > 0) {\n this._terminal.buffer.x--;\n }\n }\n\n /**\n * TAB\n * Horizontal Tab (HT) (Ctrl-I).\n */\n public tab(): void {\n this._terminal.buffer.x = this._terminal.nextStop();\n }\n\n /**\n * SO\n * Shift Out (Ctrl-N) -> Switch to Alternate Character Set. This invokes the\n * G1 character set.\n */\n public shiftOut(): void {\n this._terminal.setgLevel(1);\n }\n\n /**\n * SI\n * Shift In (Ctrl-O) -> Switch to Standard Character Set. This invokes the G0\n * character set (the default).\n */\n public shiftIn(): void {\n this._terminal.setgLevel(0);\n }\n\n /**\n * CSI Ps @\n * Insert Ps (Blank) Character(s) (default = 1) (ICH).\n */\n public insertChars(params: number[]): void {\n let param, row, j, ch;\n\n param = params[0];\n if (param < 1) param = 1;\n\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n j = this._terminal.buffer.x;\n ch = [this._terminal.eraseAttr(), ' ', 1]; // xterm\n\n while (param-- && j < this._terminal.cols) {\n this._terminal.buffer.lines.get(row).splice(j++, 0, ch);\n this._terminal.buffer.lines.get(row).pop();\n }\n }\n\n /**\n * CSI Ps A\n * Cursor Up Ps Times (default = 1) (CUU).\n */\n public cursorUp(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y -= param;\n if (this._terminal.buffer.y < 0) {\n this._terminal.buffer.y = 0;\n }\n }\n\n /**\n * CSI Ps B\n * Cursor Down Ps Times (default = 1) (CUD).\n */\n public cursorDown(params: number[]) {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y += param;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n }\n\n /**\n * CSI Ps C\n * Cursor Forward Ps Times (default = 1) (CUF).\n */\n public cursorForward(params: number[]) {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x += param;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Ps D\n * Cursor Backward Ps Times (default = 1) (CUB).\n */\n public cursorBackward(params: number[]) {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n this._terminal.buffer.x -= param;\n if (this._terminal.buffer.x < 0) {\n this._terminal.buffer.x = 0;\n }\n }\n\n /**\n * CSI Ps E\n * Cursor Next Line Ps Times (default = 1) (CNL).\n * same as CSI Ps B ?\n */\n public cursorNextLine(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y += param;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n this._terminal.buffer.x = 0;\n }\n\n\n /**\n * CSI Ps F\n * Cursor Preceding Line Ps Times (default = 1) (CNL).\n * reuse CSI Ps A ?\n */\n public cursorPrecedingLine(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y -= param;\n if (this._terminal.buffer.y < 0) {\n this._terminal.buffer.y = 0;\n }\n this._terminal.buffer.x = 0;\n }\n\n\n /**\n * CSI Ps G\n * Cursor Character Absolute [column] (default = [row,1]) (CHA).\n */\n public cursorCharAbsolute(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x = param - 1;\n }\n\n /**\n * CSI Ps ; Ps H\n * Cursor Position [row;column] (default = [1,1]) (CUP).\n */\n public cursorPosition(params: number[]): void {\n let row, col;\n\n row = params[0] - 1;\n\n if (params.length >= 2) {\n col = params[1] - 1;\n } else {\n col = 0;\n }\n\n if (row < 0) {\n row = 0;\n } else if (row >= this._terminal.rows) {\n row = this._terminal.rows - 1;\n }\n\n if (col < 0) {\n col = 0;\n } else if (col >= this._terminal.cols) {\n col = this._terminal.cols - 1;\n }\n\n this._terminal.buffer.x = col;\n this._terminal.buffer.y = row;\n }\n\n /**\n * CSI Ps I\n * Cursor Forward Tabulation Ps tab stops (default = 1) (CHT).\n */\n public cursorForwardTab(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.x = this._terminal.nextStop();\n }\n }\n\n /**\n * CSI Ps J Erase in Display (ED).\n * Ps = 0 -> Erase Below (default).\n * Ps = 1 -> Erase Above.\n * Ps = 2 -> Erase All.\n * Ps = 3 -> Erase Saved Lines (xterm).\n * CSI ? Ps J\n * Erase in Display (DECSED).\n * Ps = 0 -> Selective Erase Below (default).\n * Ps = 1 -> Selective Erase Above.\n * Ps = 2 -> Selective Erase All.\n */\n public eraseInDisplay(params: number[]): void {\n let j;\n switch (params[0]) {\n case 0:\n this._terminal.eraseRight(this._terminal.buffer.x, this._terminal.buffer.y);\n j = this._terminal.buffer.y + 1;\n for (; j < this._terminal.rows; j++) {\n this._terminal.eraseLine(j);\n }\n break;\n case 1:\n this._terminal.eraseLeft(this._terminal.buffer.x, this._terminal.buffer.y);\n j = this._terminal.buffer.y;\n while (j--) {\n this._terminal.eraseLine(j);\n }\n break;\n case 2:\n j = this._terminal.rows;\n while (j--) this._terminal.eraseLine(j);\n break;\n case 3:\n // Clear scrollback (everything not in viewport)\n const scrollBackSize = this._terminal.buffer.lines.length - this._terminal.rows;\n if (scrollBackSize > 0) {\n this._terminal.buffer.lines.trimStart(scrollBackSize);\n this._terminal.buffer.ybase = Math.max(this._terminal.buffer.ybase - scrollBackSize, 0);\n this._terminal.buffer.ydisp = Math.max(this._terminal.buffer.ydisp - scrollBackSize, 0);\n // Force a scroll event to refresh viewport\n this._terminal.emit('scroll', 0);\n }\n break;\n }\n }\n\n /**\n * CSI Ps K Erase in Line (EL).\n * Ps = 0 -> Erase to Right (default).\n * Ps = 1 -> Erase to Left.\n * Ps = 2 -> Erase All.\n * CSI ? Ps K\n * Erase in Line (DECSEL).\n * Ps = 0 -> Selective Erase to Right (default).\n * Ps = 1 -> Selective Erase to Left.\n * Ps = 2 -> Selective Erase All.\n */\n public eraseInLine(params: number[]): void {\n switch (params[0]) {\n case 0:\n this._terminal.eraseRight(this._terminal.buffer.x, this._terminal.buffer.y);\n break;\n case 1:\n this._terminal.eraseLeft(this._terminal.buffer.x, this._terminal.buffer.y);\n break;\n case 2:\n this._terminal.eraseLine(this._terminal.buffer.y);\n break;\n }\n }\n\n /**\n * CSI Ps L\n * Insert Ps Line(s) (default = 1) (IL).\n */\n public insertLines(params: number[]): void {\n let param, row, j;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n j = this._terminal.rows - 1 - this._terminal.buffer.scrollBottom;\n j = this._terminal.rows - 1 + this._terminal.buffer.ybase - j + 1;\n\n while (param--) {\n if (this._terminal.buffer.lines.length === this._terminal.buffer.lines.maxLength) {\n // Trim the start of lines to make room for the new line\n this._terminal.buffer.lines.trimStart(1);\n this._terminal.buffer.ybase--;\n this._terminal.buffer.ydisp--;\n row--;\n j--;\n }\n // test: echo -e '\\e[44m\\e[1L\\e[0m'\n // blankLine(true) - xterm/linux behavior\n this._terminal.buffer.lines.splice(row, 0, this._terminal.blankLine(true));\n this._terminal.buffer.lines.splice(j, 1);\n }\n\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.y);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps M\n * Delete Ps Line(s) (default = 1) (DL).\n */\n public deleteLines(params: number[]): void {\n let param, row, j;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n j = this._terminal.rows - 1 - this._terminal.buffer.scrollBottom;\n j = this._terminal.rows - 1 + this._terminal.buffer.ybase - j;\n\n while (param--) {\n if (this._terminal.buffer.lines.length === this._terminal.buffer.lines.maxLength) {\n // Trim the start of lines to make room for the new line\n this._terminal.buffer.lines.trimStart(1);\n this._terminal.buffer.ybase -= 1;\n this._terminal.buffer.ydisp -= 1;\n }\n // test: echo -e '\\e[44m\\e[1M\\e[0m'\n // blankLine(true) - xterm/linux behavior\n this._terminal.buffer.lines.splice(j + 1, 0, this._terminal.blankLine(true));\n this._terminal.buffer.lines.splice(row, 1);\n }\n\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.y);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps P\n * Delete Ps Character(s) (default = 1) (DCH).\n */\n public deleteChars(params: number[]): void {\n let param, row, ch;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n ch = [this._terminal.eraseAttr(), ' ', 1]; // xterm\n\n while (param--) {\n this._terminal.buffer.lines.get(row).splice(this._terminal.buffer.x, 1);\n this._terminal.buffer.lines.get(row).push(ch);\n }\n }\n\n /**\n * CSI Ps S Scroll up Ps lines (default = 1) (SU).\n */\n public scrollUp(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollTop, 1);\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollBottom, 0, this._terminal.blankLine());\n }\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.scrollTop);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps T Scroll down Ps lines (default = 1) (SD).\n */\n public scrollDown(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollBottom, 1);\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollTop, 0, this._terminal.blankLine());\n }\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.scrollTop);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps X\n * Erase Ps Character(s) (default = 1) (ECH).\n */\n public eraseChars(params: number[]): void {\n let param, row, j, ch;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n j = this._terminal.buffer.x;\n ch = [this._terminal.eraseAttr(), ' ', 1]; // xterm\n\n while (param-- && j < this._terminal.cols) {\n this._terminal.buffer.lines.get(row)[j++] = ch;\n }\n }\n\n /**\n * CSI Ps Z Cursor Backward Tabulation Ps tab stops (default = 1) (CBT).\n */\n public cursorBackwardTab(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.x = this._terminal.prevStop();\n }\n }\n\n /**\n * CSI Pm ` Character Position Absolute\n * [column] (default = [row,1]) (HPA).\n */\n public charPosAbsolute(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x = param - 1;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Pm a Character Position Relative\n * [columns] (default = [row,col+1]) (HPR)\n * reuse CSI Ps C ?\n */\n public HPositionRelative(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x += param;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Ps b Repeat the preceding graphic character Ps times (REP).\n */\n public repeatPrecedingCharacter(params: number[]): void {\n let param = params[0] || 1\n , line = this._terminal.buffer.lines.get(this._terminal.buffer.ybase + this._terminal.buffer.y)\n , ch = line[this._terminal.buffer.x - 1] || [this._terminal.defAttr, ' ', 1];\n\n while (param--) {\n line[this._terminal.buffer.x++] = ch;\n }\n }\n\n /**\n * CSI Ps c Send Device Attributes (Primary DA).\n * Ps = 0 or omitted -> request attributes from terminal. The\n * response depends on the decTerminalID resource setting.\n * -> CSI ? 1 ; 2 c (``VT100 with Advanced Video Option'')\n * -> CSI ? 1 ; 0 c (``VT101 with No Options'')\n * -> CSI ? 6 c (``VT102'')\n * -> CSI ? 6 0 ; 1 ; 2 ; 6 ; 8 ; 9 ; 1 5 ; c (``VT220'')\n * The VT100-style response parameters do not mean anything by\n * themselves. VT220 parameters do, telling the host what fea-\n * tures the terminal supports:\n * Ps = 1 -> 132-columns.\n * Ps = 2 -> Printer.\n * Ps = 6 -> Selective erase.\n * Ps = 8 -> User-defined keys.\n * Ps = 9 -> National replacement character sets.\n * Ps = 1 5 -> Technical characters.\n * Ps = 2 2 -> ANSI color, e.g., VT525.\n * Ps = 2 9 -> ANSI text locator (i.e., DEC Locator mode).\n * CSI > Ps c\n * Send Device Attributes (Secondary DA).\n * Ps = 0 or omitted -> request the terminal's identification\n * code. The response depends on the decTerminalID resource set-\n * ting. It should apply only to VT220 and up, but xterm extends\n * this to VT100.\n * -> CSI > Pp ; Pv ; Pc c\n * where Pp denotes the terminal type\n * Pp = 0 -> ``VT100''.\n * Pp = 1 -> ``VT220''.\n * and Pv is the firmware version (for xterm, this was originally\n * the XFree86 patch number, starting with 95). In a DEC termi-\n * nal, Pc indicates the ROM cartridge registration number and is\n * always zero.\n * More information:\n * xterm/charproc.c - line 2012, for more information.\n * vim responds with ^[[?0c or ^[[?1c after the terminal's response (?)\n */\n public sendDeviceAttributes(params: number[]): void {\n if (params[0] > 0) {\n return;\n }\n\n if (!this._terminal.prefix) {\n if (this._terminal.is('xterm') || this._terminal.is('rxvt-unicode') || this._terminal.is('screen')) {\n this._terminal.send(C0.ESC + '[?1;2c');\n } else if (this._terminal.is('linux')) {\n this._terminal.send(C0.ESC + '[?6c');\n }\n } else if (this._terminal.prefix === '>') {\n // xterm and urxvt\n // seem to spit this\n // out around ~370 times (?).\n if (this._terminal.is('xterm')) {\n this._terminal.send(C0.ESC + '[>0;276;0c');\n } else if (this._terminal.is('rxvt-unicode')) {\n this._terminal.send(C0.ESC + '[>85;95;0c');\n } else if (this._terminal.is('linux')) {\n // not supported by linux console.\n // linux console echoes parameters.\n this._terminal.send(params[0] + 'c');\n } else if (this._terminal.is('screen')) {\n this._terminal.send(C0.ESC + '[>83;40003;0c');\n }\n }\n }\n\n /**\n * CSI Pm d Vertical Position Absolute (VPA)\n * [row] (default = [1,column])\n */\n public linePosAbsolute(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y = param - 1;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n }\n\n /**\n * CSI Pm e Vertical Position Relative (VPR)\n * [rows] (default = [row+1,column])\n * reuse CSI Ps B ?\n */\n public VPositionRelative(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y += param;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n }\n\n /**\n * CSI Ps ; Ps f\n * Horizontal and Vertical Position [row;column] (default =\n * [1,1]) (HVP).\n */\n public HVPosition(params: number[]): void {\n if (params[0] < 1) params[0] = 1;\n if (params[1] < 1) params[1] = 1;\n\n this._terminal.buffer.y = params[0] - 1;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n\n this._terminal.buffer.x = params[1] - 1;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Ps g Tab Clear (TBC).\n * Ps = 0 -> Clear Current Column (default).\n * Ps = 3 -> Clear All.\n * Potentially:\n * Ps = 2 -> Clear Stops on Line.\n * http://vt100.net/annarbor/aaa-ug/section6.html\n */\n public tabClear(params: number[]): void {\n let param = params[0];\n if (param <= 0) {\n delete this._terminal.buffer.tabs[this._terminal.buffer.x];\n } else if (param === 3) {\n this._terminal.buffer.tabs = {};\n }\n }\n\n /**\n * CSI Pm h Set Mode (SM).\n * Ps = 2 -> Keyboard Action Mode (AM).\n * Ps = 4 -> Insert Mode (IRM).\n * Ps = 1 2 -> Send/receive (SRM).\n * Ps = 2 0 -> Automatic Newline (LNM).\n * CSI ? Pm h\n * DEC Private Mode Set (DECSET).\n * Ps = 1 -> Application Cursor Keys (DECCKM).\n * Ps = 2 -> Designate USASCII for character sets G0-G3\n * (DECANM), and set VT100 mode.\n * Ps = 3 -> 132 Column Mode (DECCOLM).\n * Ps = 4 -> Smooth (Slow) Scroll (DECSCLM).\n * Ps = 5 -> Reverse Video (DECSCNM).\n * Ps = 6 -> Origin Mode (DECOM).\n * Ps = 7 -> Wraparound Mode (DECAWM).\n * Ps = 8 -> Auto-repeat Keys (DECARM).\n * Ps = 9 -> Send Mouse X & Y on button press. See the sec-\n * tion Mouse Tracking.\n * Ps = 1 0 -> Show toolbar (rxvt).\n * Ps = 1 2 -> Start Blinking Cursor (att610).\n * Ps = 1 8 -> Print form feed (DECPFF).\n * Ps = 1 9 -> Set print extent to full screen (DECPEX).\n * Ps = 2 5 -> Show Cursor (DECTCEM).\n * Ps = 3 0 -> Show scrollbar (rxvt).\n * Ps = 3 5 -> Enable font-shifting functions (rxvt).\n * Ps = 3 8 -> Enter Tektronix Mode (DECTEK).\n * Ps = 4 0 -> Allow 80 -> 132 Mode.\n * Ps = 4 1 -> more(1) fix (see curses resource).\n * Ps = 4 2 -> Enable Nation Replacement Character sets (DECN-\n * RCM).\n * Ps = 4 4 -> Turn On Margin Bell.\n * Ps = 4 5 -> Reverse-wraparound Mode.\n * Ps = 4 6 -> Start Logging. This is normally disabled by a\n * compile-time option.\n * Ps = 4 7 -> Use Alternate Screen Buffer. (This may be dis-\n * abled by the titeInhibit resource).\n * Ps = 6 6 -> Application keypad (DECNKM).\n * Ps = 6 7 -> Backarrow key sends backspace (DECBKM).\n * Ps = 1 0 0 0 -> Send Mouse X & Y on button press and\n * release. See the section Mouse Tracking.\n * Ps = 1 0 0 1 -> Use Hilite Mouse Tracking.\n * Ps = 1 0 0 2 -> Use Cell Motion Mouse Tracking.\n * Ps = 1 0 0 3 -> Use All Motion Mouse Tracking.\n * Ps = 1 0 0 4 -> Send FocusIn/FocusOut events.\n * Ps = 1 0 0 5 -> Enable Extended Mouse Mode.\n * Ps = 1 0 1 0 -> Scroll to bottom on tty output (rxvt).\n * Ps = 1 0 1 1 -> Scroll to bottom on key press (rxvt).\n * Ps = 1 0 3 4 -> Interpret \"meta\" key, sets eighth bit.\n * (enables the eightBitInput resource).\n * Ps = 1 0 3 5 -> Enable special modifiers for Alt and Num-\n * Lock keys. (This enables the numLock resource).\n * Ps = 1 0 3 6 -> Send ESC when Meta modifies a key. (This\n * enables the metaSendsEscape resource).\n * Ps = 1 0 3 7 -> Send DEL from the editing-keypad Delete\n * key.\n * Ps = 1 0 3 9 -> Send ESC when Alt modifies a key. (This\n * enables the altSendsEscape resource).\n * Ps = 1 0 4 0 -> Keep selection even if not highlighted.\n * (This enables the keepSelection resource).\n * Ps = 1 0 4 1 -> Use the CLIPBOARD selection. (This enables\n * the selectToClipboard resource).\n * Ps = 1 0 4 2 -> Enable Urgency window manager hint when\n * Control-G is received. (This enables the bellIsUrgent\n * resource).\n * Ps = 1 0 4 3 -> Enable raising of the window when Control-G\n * is received. (enables the popOnBell resource).\n * Ps = 1 0 4 7 -> Use Alternate Screen Buffer. (This may be\n * disabled by the titeInhibit resource).\n * Ps = 1 0 4 8 -> Save cursor as in DECSC. (This may be dis-\n * abled by the titeInhibit resource).\n * Ps = 1 0 4 9 -> Save cursor as in DECSC and use Alternate\n * Screen Buffer, clearing it first. (This may be disabled by\n * the titeInhibit resource). This combines the effects of the 1\n * 0 4 7 and 1 0 4 8 modes. Use this with terminfo-based\n * applications rather than the 4 7 mode.\n * Ps = 1 0 5 0 -> Set terminfo/termcap function-key mode.\n * Ps = 1 0 5 1 -> Set Sun function-key mode.\n * Ps = 1 0 5 2 -> Set HP function-key mode.\n * Ps = 1 0 5 3 -> Set SCO function-key mode.\n * Ps = 1 0 6 0 -> Set legacy keyboard emulation (X11R6).\n * Ps = 1 0 6 1 -> Set VT220 keyboard emulation.\n * Ps = 2 0 0 4 -> Set bracketed paste mode.\n * Modes:\n * http: *vt100.net/docs/vt220-rm/chapter4.html\n */\n public setMode(params: number[]): void {\n if (params.length > 1) {\n for (let i = 0; i < params.length; i++) {\n this.setMode([params[i]]);\n }\n\n return;\n }\n\n if (!this._terminal.prefix) {\n switch (params[0]) {\n case 4:\n this._terminal.insertMode = true;\n break;\n case 20:\n // this._terminal.convertEol = true;\n break;\n }\n } else if (this._terminal.prefix === '?') {\n switch (params[0]) {\n case 1:\n this._terminal.applicationCursor = true;\n break;\n case 2:\n this._terminal.setgCharset(0, DEFAULT_CHARSET);\n this._terminal.setgCharset(1, DEFAULT_CHARSET);\n this._terminal.setgCharset(2, DEFAULT_CHARSET);\n this._terminal.setgCharset(3, DEFAULT_CHARSET);\n // set VT100 mode here\n break;\n case 3: // 132 col mode\n this._terminal.savedCols = this._terminal.cols;\n this._terminal.resize(132, this._terminal.rows);\n break;\n case 6:\n this._terminal.originMode = true;\n break;\n case 7:\n this._terminal.wraparoundMode = true;\n break;\n case 12:\n // this.cursorBlink = true;\n break;\n case 66:\n this._terminal.log('Serial port requested application keypad.');\n this._terminal.applicationKeypad = true;\n this._terminal.viewport.syncScrollArea();\n break;\n case 9: // X10 Mouse\n // no release, no motion, no wheel, no modifiers.\n case 1000: // vt200 mouse\n // no motion.\n // no modifiers, except control on the wheel.\n case 1002: // button event mouse\n case 1003: // any event mouse\n // any event - sends motion events,\n // even if there is no button held down.\n\n // TODO: Why are params[0] compares nested within a switch for params[0]?\n\n this._terminal.x10Mouse = params[0] === 9;\n this._terminal.vt200Mouse = params[0] === 1000;\n this._terminal.normalMouse = params[0] > 1000;\n this._terminal.mouseEvents = true;\n this._terminal.element.classList.add('enable-mouse-events');\n this._terminal.selectionManager.disable();\n this._terminal.log('Binding to mouse events.');\n break;\n case 1004: // send focusin/focusout events\n // focusin: ^[[I\n // focusout: ^[[O\n this._terminal.sendFocus = true;\n break;\n case 1005: // utf8 ext mode mouse\n this._terminal.utfMouse = true;\n // for wide terminals\n // simply encodes large values as utf8 characters\n break;\n case 1006: // sgr ext mode mouse\n this._terminal.sgrMouse = true;\n // for wide terminals\n // does not add 32 to fields\n // press: ^[[<b;x;yM\n // release: ^[[<b;x;ym\n break;\n case 1015: // urxvt ext mode mouse\n this._terminal.urxvtMouse = true;\n // for wide terminals\n // numbers for fields\n // press: ^[[b;x;yM\n // motion: ^[[b;x;yT\n break;\n case 25: // show cursor\n this._terminal.cursorHidden = false;\n break;\n case 1049: // alt screen buffer cursor\n // TODO: Not sure if we need to save/restore after switching the buffer\n // this.saveCursor(params);\n // FALL-THROUGH\n case 47: // alt screen buffer\n case 1047: // alt screen buffer\n this._terminal.buffers.activateAltBuffer();\n this._terminal.viewport.syncScrollArea();\n this._terminal.showCursor();\n break;\n }\n }\n }\n\n /**\n * CSI Pm l Reset Mode (RM).\n * Ps = 2 -> Keyboard Action Mode (AM).\n * Ps = 4 -> Replace Mode (IRM).\n * Ps = 1 2 -> Send/receive (SRM).\n * Ps = 2 0 -> Normal Linefeed (LNM).\n * CSI ? Pm l\n * DEC Private Mode Reset (DECRST).\n * Ps = 1 -> Normal Cursor Keys (DECCKM).\n * Ps = 2 -> Designate VT52 mode (DECANM).\n * Ps = 3 -> 80 Column Mode (DECCOLM).\n * Ps = 4 -> Jump (Fast) Scroll (DECSCLM).\n * Ps = 5 -> Normal Video (DECSCNM).\n * Ps = 6 -> Normal Cursor Mode (DECOM).\n * Ps = 7 -> No Wraparound Mode (DECAWM).\n * Ps = 8 -> No Auto-repeat Keys (DECARM).\n * Ps = 9 -> Don't send Mouse X & Y on button press.\n * Ps = 1 0 -> Hide toolbar (rxvt).\n * Ps = 1 2 -> Stop Blinking Cursor (att610).\n * Ps = 1 8 -> Don't print form feed (DECPFF).\n * Ps = 1 9 -> Limit print to scrolling region (DECPEX).\n * Ps = 2 5 -> Hide Cursor (DECTCEM).\n * Ps = 3 0 -> Don't show scrollbar (rxvt).\n * Ps = 3 5 -> Disable font-shifting functions (rxvt).\n * Ps = 4 0 -> Disallow 80 -> 132 Mode.\n * Ps = 4 1 -> No more(1) fix (see curses resource).\n * Ps = 4 2 -> Disable Nation Replacement Character sets (DEC-\n * NRCM).\n * Ps = 4 4 -> Turn Off Margin Bell.\n * Ps = 4 5 -> No Reverse-wraparound Mode.\n * Ps = 4 6 -> Stop Logging. (This is normally disabled by a\n * compile-time option).\n * Ps = 4 7 -> Use Normal Screen Buffer.\n * Ps = 6 6 -> Numeric keypad (DECNKM).\n * Ps = 6 7 -> Backarrow key sends delete (DECBKM).\n * Ps = 1 0 0 0 -> Don't send Mouse X & Y on button press and\n * release. See the section Mouse Tracking.\n * Ps = 1 0 0 1 -> Don't use Hilite Mouse Tracking.\n * Ps = 1 0 0 2 -> Don't use Cell Motion Mouse Tracking.\n * Ps = 1 0 0 3 -> Don't use All Motion Mouse Tracking.\n * Ps = 1 0 0 4 -> Don't send FocusIn/FocusOut events.\n * Ps = 1 0 0 5 -> Disable Extended Mouse Mode.\n * Ps = 1 0 1 0 -> Don't scroll to bottom on tty output\n * (rxvt).\n * Ps = 1 0 1 1 -> Don't scroll to bottom on key press (rxvt).\n * Ps = 1 0 3 4 -> Don't interpret \"meta\" key. (This disables\n * the eightBitInput resource).\n * Ps = 1 0 3 5 -> Disable special modifiers for Alt and Num-\n * Lock keys. (This disables the numLock resource).\n * Ps = 1 0 3 6 -> Don't send ESC when Meta modifies a key.\n * (This disables the metaSendsEscape resource).\n * Ps = 1 0 3 7 -> Send VT220 Remove from the editing-keypad\n * Delete key.\n * Ps = 1 0 3 9 -> Don't send ESC when Alt modifies a key.\n * (This disables the altSendsEscape resource).\n * Ps = 1 0 4 0 -> Do not keep selection when not highlighted.\n * (This disables the keepSelection resource).\n * Ps = 1 0 4 1 -> Use the PRIMARY selection. (This disables\n * the selectToClipboard resource).\n * Ps = 1 0 4 2 -> Disable Urgency window manager hint when\n * Control-G is received. (This disables the bellIsUrgent\n * resource).\n * Ps = 1 0 4 3 -> Disable raising of the window when Control-\n * G is received. (This disables the popOnBell resource).\n * Ps = 1 0 4 7 -> Use Normal Screen Buffer, clearing screen\n * first if in the Alternate Screen. (This may be disabled by\n * the titeInhibit resource).\n * Ps = 1 0 4 8 -> Restore cursor as in DECRC. (This may be\n * disabled by the titeInhibit resource).\n * Ps = 1 0 4 9 -> Use Normal Screen Buffer and restore cursor\n * as in DECRC. (This may be disabled by the titeInhibit\n * resource). This combines the effects of the 1 0 4 7 and 1 0\n * 4 8 modes. Use this with terminfo-based applications rather\n * than the 4 7 mode.\n * Ps = 1 0 5 0 -> Reset terminfo/termcap function-key mode.\n * Ps = 1 0 5 1 -> Reset Sun function-key mode.\n * Ps = 1 0 5 2 -> Reset HP function-key mode.\n * Ps = 1 0 5 3 -> Reset SCO function-key mode.\n * Ps = 1 0 6 0 -> Reset legacy keyboard emulation (X11R6).\n * Ps = 1 0 6 1 -> Reset keyboard emulation to Sun/PC style.\n * Ps = 2 0 0 4 -> Reset bracketed paste mode.\n */\n public resetMode(params: number[]): void {\n if (params.length > 1) {\n for (let i = 0; i < params.length; i++) {\n this.resetMode([params[i]]);\n }\n\n return;\n }\n\n if (!this._terminal.prefix) {\n switch (params[0]) {\n case 4:\n this._terminal.insertMode = false;\n break;\n case 20:\n // this._terminal.convertEol = false;\n break;\n }\n } else if (this._terminal.prefix === '?') {\n switch (params[0]) {\n case 1:\n this._terminal.applicationCursor = false;\n break;\n case 3:\n if (this._terminal.cols === 132 && this._terminal.savedCols) {\n this._terminal.resize(this._terminal.savedCols, this._terminal.rows);\n }\n delete this._terminal.savedCols;\n break;\n case 6:\n this._terminal.originMode = false;\n break;\n case 7:\n this._terminal.wraparoundMode = false;\n break;\n case 12:\n // this.cursorBlink = false;\n break;\n case 66:\n this._terminal.log('Switching back to normal keypad.');\n this._terminal.applicationKeypad = false;\n this._terminal.viewport.syncScrollArea();\n break;\n case 9: // X10 Mouse\n case 1000: // vt200 mouse\n case 1002: // button event mouse\n case 1003: // any event mouse\n this._terminal.x10Mouse = false;\n this._terminal.vt200Mouse = false;\n this._terminal.normalMouse = false;\n this._terminal.mouseEvents = false;\n this._terminal.element.classList.remove('enable-mouse-events');\n this._terminal.selectionManager.enable();\n break;\n case 1004: // send focusin/focusout events\n this._terminal.sendFocus = false;\n break;\n case 1005: // utf8 ext mode mouse\n this._terminal.utfMouse = false;\n break;\n case 1006: // sgr ext mode mouse\n this._terminal.sgrMouse = false;\n break;\n case 1015: // urxvt ext mode mouse\n this._terminal.urxvtMouse = false;\n break;\n case 25: // hide cursor\n this._terminal.cursorHidden = true;\n break;\n case 1049: // alt screen buffer cursor\n // FALL-THROUGH\n case 47: // normal screen buffer\n case 1047: // normal screen buffer - clearing it first\n // Ensure the selection manager has the correct buffer\n this._terminal.buffers.activateNormalBuffer();\n // TODO: Not sure if we need to save/restore after switching the buffer\n // if (params[0] === 1049) {\n // this.restoreCursor(params);\n // }\n this._terminal.selectionManager.setBuffer(this._terminal.buffer.lines);\n this._terminal.refresh(0, this._terminal.rows - 1);\n this._terminal.viewport.syncScrollArea();\n this._terminal.showCursor();\n break;\n }\n }\n }\n\n /**\n * CSI Pm m Character Attributes (SGR).\n * Ps = 0 -> Normal (default).\n * Ps = 1 -> Bold.\n * Ps = 4 -> Underlined.\n * Ps = 5 -> Blink (appears as Bold).\n * Ps = 7 -> Inverse.\n * Ps = 8 -> Invisible, i.e., hidden (VT300).\n * Ps = 2 2 -> Normal (neither bold nor faint).\n * Ps = 2 4 -> Not underlined.\n * Ps = 2 5 -> Steady (not blinking).\n * Ps = 2 7 -> Positive (not inverse).\n * Ps = 2 8 -> Visible, i.e., not hidden (VT300).\n * Ps = 3 0 -> Set foreground color to Black.\n * Ps = 3 1 -> Set foreground color to Red.\n * Ps = 3 2 -> Set foreground color to Green.\n * Ps = 3 3 -> Set foreground color to Yellow.\n * Ps = 3 4 -> Set foreground color to Blue.\n * Ps = 3 5 -> Set foreground color to Magenta.\n * Ps = 3 6 -> Set foreground color to Cyan.\n * Ps = 3 7 -> Set foreground color to White.\n * Ps = 3 9 -> Set foreground color to default (original).\n * Ps = 4 0 -> Set background color to Black.\n * Ps = 4 1 -> Set background color to Red.\n * Ps = 4 2 -> Set background color to Green.\n * Ps = 4 3 -> Set background color to Yellow.\n * Ps = 4 4 -> Set background color to Blue.\n * Ps = 4 5 -> Set background color to Magenta.\n * Ps = 4 6 -> Set background color to Cyan.\n * Ps = 4 7 -> Set background color to White.\n * Ps = 4 9 -> Set background color to default (original).\n *\n * If 16-color support is compiled, the following apply. Assume\n * that xterm's resources are set so that the ISO color codes are\n * the first 8 of a set of 16. Then the aixterm colors are the\n * bright versions of the ISO colors:\n * Ps = 9 0 -> Set foreground color to Black.\n * Ps = 9 1 -> Set foreground color to Red.\n * Ps = 9 2 -> Set foreground color to Green.\n * Ps = 9 3 -> Set foreground color to Yellow.\n * Ps = 9 4 -> Set foreground color to Blue.\n * Ps = 9 5 -> Set foreground color to Magenta.\n * Ps = 9 6 -> Set foreground color to Cyan.\n * Ps = 9 7 -> Set foreground color to White.\n * Ps = 1 0 0 -> Set background color to Black.\n * Ps = 1 0 1 -> Set background color to Red.\n * Ps = 1 0 2 -> Set background color to Green.\n * Ps = 1 0 3 -> Set background color to Yellow.\n * Ps = 1 0 4 -> Set background color to Blue.\n * Ps = 1 0 5 -> Set background color to Magenta.\n * Ps = 1 0 6 -> Set background color to Cyan.\n * Ps = 1 0 7 -> Set background color to White.\n *\n * If xterm is compiled with the 16-color support disabled, it\n * supports the following, from rxvt:\n * Ps = 1 0 0 -> Set foreground and background color to\n * default.\n *\n * If 88- or 256-color support is compiled, the following apply.\n * Ps = 3 8 ; 5 ; Ps -> Set foreground color to the second\n * Ps.\n * Ps = 4 8 ; 5 ; Ps -> Set background color to the second\n * Ps.\n */\n public charAttributes(params: number[]): void {\n // Optimize a single SGR0.\n if (params.length === 1 && params[0] === 0) {\n this._terminal.curAttr = this._terminal.defAttr;\n return;\n }\n\n let l = params.length\n , i = 0\n , flags = this._terminal.curAttr >> 18\n , fg = (this._terminal.curAttr >> 9) & 0x1ff\n , bg = this._terminal.curAttr & 0x1ff\n , p;\n\n for (; i < l; i++) {\n p = params[i];\n if (p >= 30 && p <= 37) {\n // fg color 8\n fg = p - 30;\n } else if (p >= 40 && p <= 47) {\n // bg color 8\n bg = p - 40;\n } else if (p >= 90 && p <= 97) {\n // fg color 16\n p += 8;\n fg = p - 90;\n } else if (p >= 100 && p <= 107) {\n // bg color 16\n p += 8;\n bg = p - 100;\n } else if (p === 0) {\n // default\n flags = this._terminal.defAttr >> 18;\n fg = (this._terminal.defAttr >> 9) & 0x1ff;\n bg = this._terminal.defAttr & 0x1ff;\n // flags = 0;\n // fg = 0x1ff;\n // bg = 0x1ff;\n } else if (p === 1) {\n // bold text\n flags |= 1;\n } else if (p === 4) {\n // underlined text\n flags |= 2;\n } else if (p === 5) {\n // blink\n flags |= 4;\n } else if (p === 7) {\n // inverse and positive\n // test with: echo -e '\\e[31m\\e[42mhello\\e[7mworld\\e[27mhi\\e[m'\n flags |= 8;\n } else if (p === 8) {\n // invisible\n flags |= 16;\n } else if (p === 22) {\n // not bold\n flags &= ~1;\n } else if (p === 24) {\n // not underlined\n flags &= ~2;\n } else if (p === 25) {\n // not blink\n flags &= ~4;\n } else if (p === 27) {\n // not inverse\n flags &= ~8;\n } else if (p === 28) {\n // not invisible\n flags &= ~16;\n } else if (p === 39) {\n // reset fg\n fg = (this._terminal.defAttr >> 9) & 0x1ff;\n } else if (p === 49) {\n // reset bg\n bg = this._terminal.defAttr & 0x1ff;\n } else if (p === 38) {\n // fg color 256\n if (params[i + 1] === 2) {\n i += 2;\n fg = this._terminal.matchColor(\n params[i] & 0xff,\n params[i + 1] & 0xff,\n params[i + 2] & 0xff);\n if (fg === -1) fg = 0x1ff;\n i += 2;\n } else if (params[i + 1] === 5) {\n i += 2;\n p = params[i] & 0xff;\n fg = p;\n }\n } else if (p === 48) {\n // bg color 256\n if (params[i + 1] === 2) {\n i += 2;\n bg = this._terminal.matchColor(\n params[i] & 0xff,\n params[i + 1] & 0xff,\n params[i + 2] & 0xff);\n if (bg === -1) bg = 0x1ff;\n i += 2;\n } else if (params[i + 1] === 5) {\n i += 2;\n p = params[i] & 0xff;\n bg = p;\n }\n } else if (p === 100) {\n // reset fg/bg\n fg = (this._terminal.defAttr >> 9) & 0x1ff;\n bg = this._terminal.defAttr & 0x1ff;\n } else {\n this._terminal.error('Unknown SGR attribute: %d.', p);\n }\n }\n\n this._terminal.curAttr = (flags << 18) | (fg << 9) | bg;\n }\n\n /**\n * CSI Ps n Device Status Report (DSR).\n * Ps = 5 -> Status Report. Result (``OK'') is\n * CSI 0 n\n * Ps = 6 -> Report Cursor Position (CPR) [row;column].\n * Result is\n * CSI r ; c R\n * CSI ? Ps n\n * Device Status Report (DSR, DEC-specific).\n * Ps = 6 -> Report Cursor Position (CPR) [row;column] as CSI\n * ? r ; c R (assumes page is zero).\n * Ps = 1 5 -> Report Printer status as CSI ? 1 0 n (ready).\n * or CSI ? 1 1 n (not ready).\n * Ps = 2 5 -> Report UDK status as CSI ? 2 0 n (unlocked)\n * or CSI ? 2 1 n (locked).\n * Ps = 2 6 -> Report Keyboard status as\n * CSI ? 2 7 ; 1 ; 0 ; 0 n (North American).\n * The last two parameters apply to VT400 & up, and denote key-\n * board ready and LK01 respectively.\n * Ps = 5 3 -> Report Locator status as\n * CSI ? 5 3 n Locator available, if compiled-in, or\n * CSI ? 5 0 n No Locator, if not.\n */\n public deviceStatus(params: number[]): void {\n if (!this._terminal.prefix) {\n switch (params[0]) {\n case 5:\n // status report\n this._terminal.send(C0.ESC + '[0n');\n break;\n case 6:\n // cursor position\n this._terminal.send(C0.ESC + '['\n + (this._terminal.buffer.y + 1)\n + ';'\n + (this._terminal.buffer.x + 1)\n + 'R');\n break;\n }\n } else if (this._terminal.prefix === '?') {\n // modern xterm doesnt seem to\n // respond to any of these except ?6, 6, and 5\n switch (params[0]) {\n case 6:\n // cursor position\n this._terminal.send(C0.ESC + '[?'\n + (this._terminal.buffer.y + 1)\n + ';'\n + (this._terminal.buffer.x + 1)\n + 'R');\n break;\n case 15:\n // no printer\n // this.send(C0.ESC + '[?11n');\n break;\n case 25:\n // dont support user defined keys\n // this.send(C0.ESC + '[?21n');\n break;\n case 26:\n // north american keyboard\n // this.send(C0.ESC + '[?27;1;0;0n');\n break;\n case 53:\n // no dec locator/mouse\n // this.send(C0.ESC + '[?50n');\n break;\n }\n }\n }\n\n /**\n * CSI ! p Soft terminal reset (DECSTR).\n * http://vt100.net/docs/vt220-rm/table4-10.html\n */\n public softReset(params: number[]): void {\n this._terminal.cursorHidden = false;\n this._terminal.insertMode = false;\n this._terminal.originMode = false;\n this._terminal.wraparoundMode = true; // defaults: xterm - true, vt100 - false\n this._terminal.applicationKeypad = false; // ?\n this._terminal.viewport.syncScrollArea();\n this._terminal.applicationCursor = false;\n this._terminal.buffer.scrollTop = 0;\n this._terminal.buffer.scrollBottom = this._terminal.rows - 1;\n this._terminal.curAttr = this._terminal.defAttr;\n this._terminal.buffer.x = this._terminal.buffer.y = 0; // ?\n this._terminal.charset = null;\n this._terminal.glevel = 0; // ??\n this._terminal.charsets = [null]; // ??\n }\n\n /**\n * CSI Ps SP q Set cursor style (DECSCUSR, VT520).\n * Ps = 0 -> blinking block.\n * Ps = 1 -> blinking block (default).\n * Ps = 2 -> steady block.\n * Ps = 3 -> blinking underline.\n * Ps = 4 -> steady underline.\n * Ps = 5 -> blinking bar (xterm).\n * Ps = 6 -> steady bar (xterm).\n */\n public setCursorStyle(params?: number[]): void {\n const param = params[0] < 1 ? 1 : params[0];\n switch (param) {\n case 1:\n case 2:\n this._terminal.setOption('cursorStyle', 'block');\n break;\n case 3:\n case 4:\n this._terminal.setOption('cursorStyle', 'underline');\n break;\n case 5:\n case 6:\n this._terminal.setOption('cursorStyle', 'bar');\n break;\n }\n const isBlinking = param % 2 === 1;\n this._terminal.setOption('cursorBlink', isBlinking);\n }\n\n /**\n * CSI Ps ; Ps r\n * Set Scrolling Region [top;bottom] (default = full size of win-\n * dow) (DECSTBM).\n * CSI ? Pm r\n */\n public setScrollRegion(params: number[]): void {\n if (this._terminal.prefix) return;\n this._terminal.buffer.scrollTop = (params[0] || 1) - 1;\n this._terminal.buffer.scrollBottom = (params[1] && params[1] <= this._terminal.rows ? params[1] : this._terminal.rows) - 1;\n this._terminal.buffer.x = 0;\n this._terminal.buffer.y = 0;\n }\n\n\n /**\n * CSI s\n * Save cursor (ANSI.SYS).\n */\n public saveCursor(params: number[]): void {\n this._terminal.buffer.savedX = this._terminal.buffer.x;\n this._terminal.buffer.savedY = this._terminal.buffer.y;\n }\n\n\n /**\n * CSI u\n * Restore cursor (ANSI.SYS).\n */\n public restoreCursor(params: number[]): void {\n this._terminal.buffer.x = this._terminal.buffer.savedX || 0;\n this._terminal.buffer.y = this._terminal.buffer.savedY || 0;\n }\n}\n\nexport const wcwidth = (function(opts) {\n // extracted from https://www.cl.cam.ac.uk/%7Emgk25/ucs/wcwidth.c\n // combining characters\n const COMBINING_BMP = [\n [0x0300, 0x036F], [0x0483, 0x0486], [0x0488, 0x0489],\n [0x0591, 0x05BD], [0x05BF, 0x05BF], [0x05C1, 0x05C2],\n [0x05C4, 0x05C5], [0x05C7, 0x05C7], [0x0600, 0x0603],\n [0x0610, 0x0615], [0x064B, 0x065E], [0x0670, 0x0670],\n [0x06D6, 0x06E4], [0x06E7, 0x06E8], [0x06EA, 0x06ED],\n [0x070F, 0x070F], [0x0711, 0x0711], [0x0730, 0x074A],\n [0x07A6, 0x07B0], [0x07EB, 0x07F3], [0x0901, 0x0902],\n [0x093C, 0x093C], [0x0941, 0x0948], [0x094D, 0x094D],\n [0x0951, 0x0954], [0x0962, 0x0963], [0x0981, 0x0981],\n [0x09BC, 0x09BC], [0x09C1, 0x09C4], [0x09CD, 0x09CD],\n [0x09E2, 0x09E3], [0x0A01, 0x0A02], [0x0A3C, 0x0A3C],\n [0x0A41, 0x0A42], [0x0A47, 0x0A48], [0x0A4B, 0x0A4D],\n [0x0A70, 0x0A71], [0x0A81, 0x0A82], [0x0ABC, 0x0ABC],\n [0x0AC1, 0x0AC5], [0x0AC7, 0x0AC8], [0x0ACD, 0x0ACD],\n [0x0AE2, 0x0AE3], [0x0B01, 0x0B01], [0x0B3C, 0x0B3C],\n [0x0B3F, 0x0B3F], [0x0B41, 0x0B43], [0x0B4D, 0x0B4D],\n [0x0B56, 0x0B56], [0x0B82, 0x0B82], [0x0BC0, 0x0BC0],\n [0x0BCD, 0x0BCD], [0x0C3E, 0x0C40], [0x0C46, 0x0C48],\n [0x0C4A, 0x0C4D], [0x0C55, 0x0C56], [0x0CBC, 0x0CBC],\n [0x0CBF, 0x0CBF], [0x0CC6, 0x0CC6], [0x0CCC, 0x0CCD],\n [0x0CE2, 0x0CE3], [0x0D41, 0x0D43], [0x0D4D, 0x0D4D],\n [0x0DCA, 0x0DCA], [0x0DD2, 0x0DD4], [0x0DD6, 0x0DD6],\n [0x0E31, 0x0E31], [0x0E34, 0x0E3A], [0x0E47, 0x0E4E],\n [0x0EB1, 0x0EB1], [0x0EB4, 0x0EB9], [0x0EBB, 0x0EBC],\n [0x0EC8, 0x0ECD], [0x0F18, 0x0F19], [0x0F35, 0x0F35],\n [0x0F37, 0x0F37], [0x0F39, 0x0F39], [0x0F71, 0x0F7E],\n [0x0F80, 0x0F84], [0x0F86, 0x0F87], [0x0F90, 0x0F97],\n [0x0F99, 0x0FBC], [0x0FC6, 0x0FC6], [0x102D, 0x1030],\n [0x1032, 0x1032], [0x1036, 0x1037], [0x1039, 0x1039],\n [0x1058, 0x1059], [0x1160, 0x11FF], [0x135F, 0x135F],\n [0x1712, 0x1714], [0x1732, 0x1734], [0x1752, 0x1753],\n [0x1772, 0x1773], [0x17B4, 0x17B5], [0x17B7, 0x17BD],\n [0x17C6, 0x17C6], [0x17C9, 0x17D3], [0x17DD, 0x17DD],\n [0x180B, 0x180D], [0x18A9, 0x18A9], [0x1920, 0x1922],\n [0x1927, 0x1928], [0x1932, 0x1932], [0x1939, 0x193B],\n [0x1A17, 0x1A18], [0x1B00, 0x1B03], [0x1B34, 0x1B34],\n [0x1B36, 0x1B3A], [0x1B3C, 0x1B3C], [0x1B42, 0x1B42],\n [0x1B6B, 0x1B73], [0x1DC0, 0x1DCA], [0x1DFE, 0x1DFF],\n [0x200B, 0x200F], [0x202A, 0x202E], [0x2060, 0x2063],\n [0x206A, 0x206F], [0x20D0, 0x20EF], [0x302A, 0x302F],\n [0x3099, 0x309A], [0xA806, 0xA806], [0xA80B, 0xA80B],\n [0xA825, 0xA826], [0xFB1E, 0xFB1E], [0xFE00, 0xFE0F],\n [0xFE20, 0xFE23], [0xFEFF, 0xFEFF], [0xFFF9, 0xFFFB],\n ];\n const COMBINING_HIGH = [\n [0x10A01, 0x10A03], [0x10A05, 0x10A06], [0x10A0C, 0x10A0F],\n [0x10A38, 0x10A3A], [0x10A3F, 0x10A3F], [0x1D167, 0x1D169],\n [0x1D173, 0x1D182], [0x1D185, 0x1D18B], [0x1D1AA, 0x1D1AD],\n [0x1D242, 0x1D244], [0xE0001, 0xE0001], [0xE0020, 0xE007F],\n [0xE0100, 0xE01EF]\n ];\n // binary search\n function bisearch(ucs, data) {\n let min = 0;\n let max = data.length - 1;\n let mid;\n if (ucs < data[0][0] || ucs > data[max][1])\n return false;\n while (max >= min) {\n mid = (min + max) >> 1;\n if (ucs > data[mid][1])\n min = mid + 1;\n else if (ucs < data[mid][0])\n max = mid - 1;\n else\n return true;\n }\n return false;\n }\n function wcwidthBMP(ucs) {\n // test for 8-bit control characters\n if (ucs === 0)\n return opts.nul;\n if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))\n return opts.control;\n // binary search in table of non-spacing characters\n if (bisearch(ucs, COMBINING_BMP))\n return 0;\n // if we arrive here, ucs is not a combining or C0/C1 control character\n if (isWideBMP(ucs)) {\n return 2;\n }\n return 1;\n }\n function isWideBMP(ucs) {\n return (\n ucs >= 0x1100 && (\n ucs <= 0x115f || // Hangul Jamo init. consonants\n ucs === 0x2329 ||\n ucs === 0x232a ||\n (ucs >= 0x2e80 && ucs <= 0xa4cf && ucs !== 0x303f) || // CJK..Yi\n (ucs >= 0xac00 && ucs <= 0xd7a3) || // Hangul Syllables\n (ucs >= 0xf900 && ucs <= 0xfaff) || // CJK Compat Ideographs\n (ucs >= 0xfe10 && ucs <= 0xfe19) || // Vertical forms\n (ucs >= 0xfe30 && ucs <= 0xfe6f) || // CJK Compat Forms\n (ucs >= 0xff00 && ucs <= 0xff60) || // Fullwidth Forms\n (ucs >= 0xffe0 && ucs <= 0xffe6)));\n }\n function wcwidthHigh(ucs) {\n if (bisearch(ucs, COMBINING_HIGH))\n return 0;\n if ((ucs >= 0x20000 && ucs <= 0x2fffd) || (ucs >= 0x30000 && ucs <= 0x3fffd)) {\n return 2;\n }\n return 1;\n }\n const control = opts.control | 0;\n let table = null;\n function init_table() {\n // lookup table for BMP\n const CODEPOINTS = 65536; // BMP holds 65536 codepoints\n const BITWIDTH = 2; // a codepoint can have a width of 0, 1 or 2\n const ITEMSIZE = 32; // using uint32_t\n const CONTAINERSIZE = CODEPOINTS * BITWIDTH / ITEMSIZE;\n const CODEPOINTS_PER_ITEM = ITEMSIZE / BITWIDTH;\n table = (typeof Uint32Array === 'undefined')\n ? new Array(CONTAINERSIZE)\n : new Uint32Array(CONTAINERSIZE);\n for (let i = 0; i < CONTAINERSIZE; ++i) {\n let num = 0;\n let pos = CODEPOINTS_PER_ITEM;\n while (pos--)\n num = (num << 2) | wcwidthBMP(CODEPOINTS_PER_ITEM * i + pos);\n table[i] = num;\n }\n return table;\n }\n // get width from lookup table\n // position in container : num / CODEPOINTS_PER_ITEM\n // ==> n = table[Math.floor(num / 16)]\n // ==> n = table[num >> 4]\n // 16 codepoints per number: FFEEDDCCBBAA99887766554433221100\n // position in number : (num % CODEPOINTS_PER_ITEM) * BITWIDTH\n // ==> m = (n % 16) * 2\n // ==> m = (num & 15) << 1\n // right shift to position m\n // ==> n = n >> m e.g. m=12 000000000000FFEEDDCCBBAA99887766\n // we are only interested in 2 LSBs, cut off higher bits\n // ==> n = n & 3 e.g. 000000000000000000000000000000XX\n return function (num) {\n num = num | 0; // get asm.js like optimization under V8\n if (num < 32)\n return control | 0;\n if (num < 127)\n return 1;\n let t = table || init_table();\n if (num < 65536)\n return t[num >> 4] >> ((num & 15) << 1) & 3;\n // do a full search for high codepoints\n return wcwidthHigh(num);\n };\n})({nul: 0, control: 0}); // configurable options\n","/**\n * @license MIT\n */\n\nimport { IEventEmitter } from './Interfaces';\n\ninterface ListenerType {\n (): void;\n listener?: () => void;\n};\n\nexport class EventEmitter implements IEventEmitter {\n private _events: {[type: string]: ListenerType[]};\n\n constructor() {\n // Restore the previous events if available, this will happen if the\n // constructor is called multiple times on the same object (terminal reset).\n this._events = this._events || {};\n }\n\n public on(type, listener): void {\n this._events[type] = this._events[type] || [];\n this._events[type].push(listener);\n }\n\n public off(type, listener): void {\n if (!this._events[type]) {\n return;\n }\n\n let obj = this._events[type];\n let i = obj.length;\n\n while (i--) {\n if (obj[i] === listener || obj[i].listener === listener) {\n obj.splice(i, 1);\n return;\n }\n }\n }\n\n public removeAllListeners(type): void {\n if (this._events[type]) {\n delete this._events[type];\n }\n }\n\n public once(type, listener): any {\n function on() {\n let args = Array.prototype.slice.call(arguments);\n this.off(type, on);\n return listener.apply(this, args);\n }\n (<any>on).listener = listener;\n return this.on(type, on);\n }\n\n public emit(type: string, ...args: any[]): void {\n if (!this._events[type]) {\n return;\n }\n let obj = this._events[type];\n for (let i = 0; i < obj.length; i++) {\n obj[i].apply(this, args);\n }\n }\n\n public listeners(type): ListenerType[] {\n return this._events[type] || [];\n }\n}\n","/**\n * @license MIT\n */\n\n/**\n * C0 control codes\n * See = https://en.wikipedia.org/wiki/C0_and_C1_control_codes\n */\nexport namespace C0 {\n /** Null (Caret = ^@, C = \\0) */\n export const NUL = '\\x00';\n /** Start of Heading (Caret = ^A) */\n export const SOH = '\\x01';\n /** Start of Text (Caret = ^B) */\n export const STX = '\\x02';\n /** End of Text (Caret = ^C) */\n export const ETX = '\\x03';\n /** End of Transmission (Caret = ^D) */\n export const EOT = '\\x04';\n /** Enquiry (Caret = ^E) */\n export const ENQ = '\\x05';\n /** Acknowledge (Caret = ^F) */\n export const ACK = '\\x06';\n /** Bell (Caret = ^G, C = \\a) */\n export const BEL = '\\x07';\n /** Backspace (Caret = ^H, C = \\b) */\n export const BS = '\\x08';\n /** Character Tabulation, Horizontal Tabulation (Caret = ^I, C = \\t) */\n export const HT = '\\x09';\n /** Line Feed (Caret = ^J, C = \\n) */\n export const LF = '\\x0a';\n /** Line Tabulation, Vertical Tabulation (Caret = ^K, C = \\v) */\n export const VT = '\\x0b';\n /** Form Feed (Caret = ^L, C = \\f) */\n export const FF = '\\x0c';\n /** Carriage Return (Caret = ^M, C = \\r) */\n export const CR = '\\x0d';\n /** Shift Out (Caret = ^N) */\n export const SO = '\\x0e';\n /** Shift In (Caret = ^O) */\n export const SI = '\\x0f';\n /** Data Link Escape (Caret = ^P) */\n export const DLE = '\\x10';\n /** Device Control One (XON) (Caret = ^Q) */\n export const DC1 = '\\x11';\n /** Device Control Two (Caret = ^R) */\n export const DC2 = '\\x12';\n /** Device Control Three (XOFF) (Caret = ^S) */\n export const DC3 = '\\x13';\n /** Device Control Four (Caret = ^T) */\n export const DC4 = '\\x14';\n /** Negative Acknowledge (Caret = ^U) */\n export const NAK = '\\x15';\n /** Synchronous Idle (Caret = ^V) */\n export const SYN = '\\x16';\n /** End of Transmission Block (Caret = ^W) */\n export const ETB = '\\x17';\n /** Cancel (Caret = ^X) */\n export const CAN = '\\x18';\n /** End of Medium (Caret = ^Y) */\n export const EM = '\\x19';\n /** Substitute (Caret = ^Z) */\n export const SUB = '\\x1a';\n /** Escape (Caret = ^[, C = \\e) */\n export const ESC = '\\x1b';\n /** File Separator (Caret = ^\\) */\n export const FS = '\\x1c';\n /** Group Separator (Caret = ^]) */\n export const GS = '\\x1d';\n /** Record Separator (Caret = ^^) */\n export const RS = '\\x1e';\n /** Unit Separator (Caret = ^_) */\n export const US = '\\x1f';\n /** Space */\n export const SP = '\\x20';\n /** Delete (Caret = ^?) */\n export const DEL = '\\x7f';\n};\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\n\ninterface IPosition {\n start: number;\n end: number;\n}\n\n/**\n * Encapsulates the logic for handling compositionstart, compositionupdate and compositionend\n * events, displaying the in-progress composition to the UI and forwarding the final composition\n * to the handler.\n */\nexport class CompositionHelper {\n /**\n * Whether input composition is currently happening, eg. via a mobile keyboard, speech input or\n * IME. This variable determines whether the compositionText should be displayed on the UI.\n */\n private isComposing: boolean;\n\n /**\n * The position within the input textarea's value of the current composition.\n */\n private compositionPosition: IPosition;\n\n /**\n * Whether a composition is in the process of being sent, setting this to false will cancel any\n * in-progress composition.\n */\n private isSendingComposition: boolean;\n\n /**\n * Creates a new CompositionHelper.\n * @param textarea The textarea that xterm uses for input.\n * @param compositionView The element to display the in-progress composition in.\n * @param terminal The Terminal to forward the finished composition to.\n */\n constructor(\n private textarea: HTMLTextAreaElement,\n private compositionView: HTMLElement,\n private terminal: ITerminal\n ) {\n this.isComposing = false;\n this.isSendingComposition = false;\n this.compositionPosition = { start: null, end: null };\n }\n\n /**\n * Handles the compositionstart event, activating the composition view.\n */\n public compositionstart() {\n this.isComposing = true;\n this.compositionPosition.start = this.textarea.value.length;\n this.compositionView.textContent = '';\n this.compositionView.classList.add('active');\n }\n\n /**\n * Handles the compositionupdate event, updating the composition view.\n * @param {CompositionEvent} ev The event.\n */\n public compositionupdate(ev: CompositionEvent) {\n this.compositionView.textContent = ev.data;\n this.updateCompositionElements();\n setTimeout(() => {\n this.compositionPosition.end = this.textarea.value.length;\n }, 0);\n }\n\n /**\n * Handles the compositionend event, hiding the composition view and sending the composition to\n * the handler.\n */\n public compositionend() {\n this.finalizeComposition(true);\n }\n\n /**\n * Handles the keydown event, routing any necessary events to the CompositionHelper functions.\n * @param ev The keydown event.\n * @return Whether the Terminal should continue processing the keydown event.\n */\n public keydown(ev: KeyboardEvent) {\n if (this.isComposing || this.isSendingComposition) {\n if (ev.keyCode === 229) {\n // Continue composing if the keyCode is the \"composition character\"\n return false;\n } else if (ev.keyCode === 16 || ev.keyCode === 17 || ev.keyCode === 18) {\n // Continue composing if the keyCode is a modifier key\n return false;\n } else {\n // Finish composition immediately. This is mainly here for the case where enter is\n // pressed and the handler needs to be triggered before the command is executed.\n this.finalizeComposition(false);\n }\n }\n\n if (ev.keyCode === 229) {\n // If the \"composition character\" is used but gets to this point it means a non-composition\n // character (eg. numbers and punctuation) was pressed when the IME was active.\n this.handleAnyTextareaChanges();\n return false;\n }\n\n return true;\n }\n\n /**\n * Finalizes the composition, resuming regular input actions. This is called when a composition\n * is ending.\n * @param waitForPropogation Whether to wait for events to propogate before sending\n * the input. This should be false if a non-composition keystroke is entered before the\n * compositionend event is triggered, such as enter, so that the composition is send before\n * the command is executed.\n */\n private finalizeComposition(waitForPropogation: boolean) {\n this.compositionView.classList.remove('active');\n this.isComposing = false;\n this.clearTextareaPosition();\n\n if (!waitForPropogation) {\n // Cancel any delayed composition send requests and send the input immediately.\n this.isSendingComposition = false;\n const input = this.textarea.value.substring(this.compositionPosition.start, this.compositionPosition.end);\n this.terminal.handler(input);\n } else {\n // Make a deep copy of the composition position here as a new compositionstart event may\n // fire before the setTimeout executes.\n const currentCompositionPosition = {\n start: this.compositionPosition.start,\n end: this.compositionPosition.end,\n };\n\n // Since composition* events happen before the changes take place in the textarea on most\n // browsers, use a setTimeout with 0ms time to allow the native compositionend event to\n // complete. This ensures the correct character is retrieved, this solution was used\n // because:\n // - The compositionend event's data property is unreliable, at least on Chromium\n // - The last compositionupdate event's data property does not always accurately describe\n // the character, a counter example being Korean where an ending consonsant can move to\n // the following character if the following input is a vowel.\n this.isSendingComposition = true;\n setTimeout(() => {\n // Ensure that the input has not already been sent\n if (this.isSendingComposition) {\n this.isSendingComposition = false;\n let input;\n if (this.isComposing) {\n // Use the end position to get the string if a new composition has started.\n input = this.textarea.value.substring(currentCompositionPosition.start, currentCompositionPosition.end);\n } else {\n // Don't use the end position here in order to pick up any characters after the\n // composition has finished, for example when typing a non-composition character\n // (eg. 2) after a composition character.\n input = this.textarea.value.substring(currentCompositionPosition.start);\n }\n this.terminal.handler(input);\n }\n }, 0);\n }\n }\n\n /**\n * Apply any changes made to the textarea after the current event chain is allowed to complete.\n * This should be called when not currently composing but a keydown event with the \"composition\n * character\" (229) is triggered, in order to allow non-composition text to be entered when an\n * IME is active.\n */\n private handleAnyTextareaChanges() {\n const oldValue = this.textarea.value;\n setTimeout(() => {\n // Ignore if a composition has started since the timeout\n if (!this.isComposing) {\n const newValue = this.textarea.value;\n const diff = newValue.replace(oldValue, '');\n if (diff.length > 0) {\n this.terminal.handler(diff);\n }\n }\n }, 0);\n }\n\n /**\n * Positions the composition view on top of the cursor and the textarea just below it (so the\n * IME helper dialog is positioned correctly).\n * @param dontRecurse Whether to use setTimeout to recursively trigger another update, this is\n * necessary as the IME events across browsers are not consistently triggered.\n */\n public updateCompositionElements(dontRecurse?: boolean) {\n if (!this.isComposing) {\n return;\n }\n const cursor = <HTMLElement>this.terminal.element.querySelector('.terminal-cursor');\n if (cursor) {\n // Take .xterm-rows offsetTop into account as well in case it's positioned absolutely within\n // the .xterm element.\n const xtermRows = <HTMLElement>this.terminal.element.querySelector('.xterm-rows');\n const cursorTop = xtermRows.offsetTop + cursor.offsetTop;\n\n this.compositionView.style.left = cursor.offsetLeft + 'px';\n this.compositionView.style.top = cursorTop + 'px';\n this.compositionView.style.height = cursor.offsetHeight + 'px';\n this.compositionView.style.lineHeight = cursor.offsetHeight + 'px';\n // Sync the textarea to the exact position of the composition view so the IME knows where the\n // text is.\n const compositionViewBounds = this.compositionView.getBoundingClientRect();\n this.textarea.style.left = cursor.offsetLeft + 'px';\n this.textarea.style.top = cursorTop + 'px';\n this.textarea.style.width = compositionViewBounds.width + 'px';\n this.textarea.style.height = compositionViewBounds.height + 'px';\n this.textarea.style.lineHeight = compositionViewBounds.height + 'px';\n }\n if (!dontRecurse) {\n setTimeout(() => this.updateCompositionElements(true), 0);\n }\n };\n\n /**\n * Clears the textarea's position so that the cursor does not blink on IE.\n * @private\n */\n private clearTextareaPosition() {\n this.textarea.style.left = '';\n this.textarea.style.top = '';\n };\n}\n","/**\n * @license MIT\n */\n\n/**\n * The character sets supported by the terminal. These enable several languages\n * to be represented within the terminal with only 8-bit encoding. See ISO 2022\n * for a discussion on character sets. Only VT100 character sets are supported.\n */\nexport const CHARSETS: {[key: string]: {[key: string]: string}} = {};\n\n/**\n * The default character set, US.\n */\nexport const DEFAULT_CHARSET = CHARSETS['B'];\n\n/**\n * DEC Special Character and Line Drawing Set.\n * Reference: http://vt100.net/docs/vt102-ug/table5-13.html\n * A lot of curses apps use this if they see TERM=xterm.\n * testing: echo -e '\\e(0a\\e(B'\n * The xterm output sometimes seems to conflict with the\n * reference above. xterm seems in line with the reference\n * when running vttest however.\n * The table below now uses xterm's output from vttest.\n */\nCHARSETS['0'] = {\n '`': '\\u25c6', // '◆'\n 'a': '\\u2592', // '▒'\n 'b': '\\u0009', // '\\t'\n 'c': '\\u000c', // '\\f'\n 'd': '\\u000d', // '\\r'\n 'e': '\\u000a', // '\\n'\n 'f': '\\u00b0', // '°'\n 'g': '\\u00b1', // '±'\n 'h': '\\u2424', // '\\u2424' (NL)\n 'i': '\\u000b', // '\\v'\n 'j': '\\u2518', // '┘'\n 'k': '\\u2510', // '┐'\n 'l': '\\u250c', // '┌'\n 'm': '\\u2514', // '└'\n 'n': '\\u253c', // '┼'\n 'o': '\\u23ba', // '⎺'\n 'p': '\\u23bb', // '⎻'\n 'q': '\\u2500', // '─'\n 'r': '\\u23bc', // '⎼'\n 's': '\\u23bd', // '⎽'\n 't': '\\u251c', // '├'\n 'u': '\\u2524', // '┤'\n 'v': '\\u2534', // '┴'\n 'w': '\\u252c', // '┬'\n 'x': '\\u2502', // '│'\n 'y': '\\u2264', // '≤'\n 'z': '\\u2265', // '≥'\n '{': '\\u03c0', // 'π'\n '|': '\\u2260', // '≠'\n '}': '\\u00a3', // '£'\n '~': '\\u00b7' // '·'\n};\n\n/**\n * British character set\n * ESC (A\n * Reference: http://vt100.net/docs/vt220-rm/table2-5.html\n */\nCHARSETS['A'] = {\n '#': '£'\n};\n\n/**\n * United States character set\n * ESC (B\n */\nCHARSETS['B'] = null;\n\n/**\n * Dutch character set\n * ESC (4\n * Reference: http://vt100.net/docs/vt220-rm/table2-6.html\n */\nCHARSETS['4'] = {\n '#': '£',\n '@': '¾',\n '[': 'ij',\n '\\\\': '½',\n ']': '|',\n '{': '¨',\n '|': 'f',\n '}': '¼',\n '~': '´'\n};\n\n/**\n * Finnish character set\n * ESC (C or ESC (5\n * Reference: http://vt100.net/docs/vt220-rm/table2-7.html\n */\nCHARSETS['C'] =\nCHARSETS['5'] = {\n '[': 'Ä',\n '\\\\': 'Ö',\n ']': 'Å',\n '^': 'Ü',\n '`': 'é',\n '{': 'ä',\n '|': 'ö',\n '}': 'å',\n '~': 'ü'\n};\n\n/**\n * French character set\n * ESC (R\n * Reference: http://vt100.net/docs/vt220-rm/table2-8.html\n */\nCHARSETS['R'] = {\n '#': '£',\n '@': 'à',\n '[': '°',\n '\\\\': 'ç',\n ']': '§',\n '{': 'é',\n '|': 'ù',\n '}': 'è',\n '~': '¨'\n};\n\n/**\n * French Canadian character set\n * ESC (Q\n * Reference: http://vt100.net/docs/vt220-rm/table2-9.html\n */\nCHARSETS['Q'] = {\n '@': 'à',\n '[': 'â',\n '\\\\': 'ç',\n ']': 'ê',\n '^': 'î',\n '`': 'ô',\n '{': 'é',\n '|': 'ù',\n '}': 'è',\n '~': 'û'\n};\n\n/**\n * German character set\n * ESC (K\n * Reference: http://vt100.net/docs/vt220-rm/table2-10.html\n */\nCHARSETS['K'] = {\n '@': '§',\n '[': 'Ä',\n '\\\\': 'Ö',\n ']': 'Ü',\n '{': 'ä',\n '|': 'ö',\n '}': 'ü',\n '~': 'ß'\n};\n\n/**\n * Italian character set\n * ESC (Y\n * Reference: http://vt100.net/docs/vt220-rm/table2-11.html\n */\nCHARSETS['Y'] = {\n '#': '£',\n '@': '§',\n '[': '°',\n '\\\\': 'ç',\n ']': 'é',\n '`': 'ù',\n '{': 'à',\n '|': 'ò',\n '}': 'è',\n '~': 'ì'\n};\n\n/**\n * Norwegian/Danish character set\n * ESC (E or ESC (6\n * Reference: http://vt100.net/docs/vt220-rm/table2-12.html\n */\nCHARSETS['E'] =\nCHARSETS['6'] = {\n '@': 'Ä',\n '[': 'Æ',\n '\\\\': 'Ø',\n ']': 'Å',\n '^': 'Ü',\n '`': 'ä',\n '{': 'æ',\n '|': 'ø',\n '}': 'å',\n '~': 'ü'\n};\n\n/**\n * Spanish character set\n * ESC (Z\n * Reference: http://vt100.net/docs/vt220-rm/table2-13.html\n */\nCHARSETS['Z'] = {\n '#': '£',\n '@': '§',\n '[': '¡',\n '\\\\': 'Ñ',\n ']': '¿',\n '{': '°',\n '|': 'ñ',\n '}': 'ç'\n};\n\n/**\n * Swedish character set\n * ESC (H or ESC (7\n * Reference: http://vt100.net/docs/vt220-rm/table2-14.html\n */\nCHARSETS['H'] =\nCHARSETS['7'] = {\n '@': 'É',\n '[': 'Ä',\n '\\\\': 'Ö',\n ']': 'Å',\n '^': 'Ü',\n '`': 'é',\n '{': 'ä',\n '|': 'ö',\n '}': 'å',\n '~': 'ü'\n};\n\n/**\n * Swiss character set\n * ESC (=\n * Reference: http://vt100.net/docs/vt220-rm/table2-15.html\n */\nCHARSETS['='] = {\n '#': 'ù',\n '@': 'à',\n '[': 'é',\n '\\\\': 'ç',\n ']': 'ê',\n '^': 'î',\n '_': 'è',\n '`': 'ô',\n '{': 'ä',\n '|': 'ö',\n '}': 'ü',\n '~': 'û'\n};\n","/**\n * @license MIT\n */\n\nimport { ITerminal, IBufferSet } from './Interfaces';\nimport { Buffer } from './Buffer';\nimport { EventEmitter } from './EventEmitter';\n\n/**\n * The BufferSet represents the set of two buffers used by xterm terminals (normal and alt) and\n * provides also utilities for working with them.\n */\nexport class BufferSet extends EventEmitter implements IBufferSet {\n private _normal: Buffer;\n private _alt: Buffer;\n private _activeBuffer: Buffer;\n\n /**\n * Create a new BufferSet for the given terminal.\n * @param {Terminal} terminal - The terminal the BufferSet will belong to\n */\n constructor(private _terminal: ITerminal) {\n super();\n this._normal = new Buffer(this._terminal);\n this._normal.fillViewportRows();\n this._alt = new Buffer(this._terminal);\n this._activeBuffer = this._normal;\n }\n\n /**\n * Returns the alt Buffer of the BufferSet\n * @returns {Buffer}\n */\n public get alt(): Buffer {\n return this._alt;\n }\n\n /**\n * Returns the normal Buffer of the BufferSet\n * @returns {Buffer}\n */\n public get active(): Buffer {\n return this._activeBuffer;\n }\n\n /**\n * Returns the currently active Buffer of the BufferSet\n * @returns {Buffer}\n */\n public get normal(): Buffer {\n return this._normal;\n }\n\n /**\n * Sets the normal Buffer of the BufferSet as its currently active Buffer\n */\n public activateNormalBuffer(): void {\n // The alt buffer should always be cleared when we switch to the normal\n // buffer. This frees up memory since the alt buffer should always be new\n // when activated.\n this._alt.clear();\n\n this._activeBuffer = this._normal;\n this.emit('activate', this._normal);\n }\n\n /**\n * Sets the alt Buffer of the BufferSet as its currently active Buffer\n */\n public activateAltBuffer(): void {\n // Since the alt buffer is always cleared when the normal buffer is\n // activated, we want to fill it when switching to it.\n this._alt.fillViewportRows();\n\n this._activeBuffer = this._alt;\n this.emit('activate', this._alt);\n }\n\n /**\n * Resizes both normal and alt buffers, adjusting their data accordingly.\n * @param newCols The new number of columns.\n * @param newRows The new number of rows.\n */\n public resize(newCols: number, newRows: number): void {\n this._normal.resize(newCols, newRows);\n this._alt.resize(newCols, newRows);\n }\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal, IBuffer } from './Interfaces';\nimport { CircularList } from './utils/CircularList';\n\n/**\n * This class represents a terminal buffer (an internal state of the terminal), where the\n * following information is stored (in high-level):\n * - text content of this particular buffer\n * - cursor position\n * - scroll position\n */\nexport class Buffer implements IBuffer {\n private _lines: CircularList<[number, string, number][]>;\n\n public ydisp: number;\n public ybase: number;\n public y: number;\n public x: number;\n public scrollBottom: number;\n public scrollTop: number;\n public tabs: any;\n public savedY: number;\n public savedX: number;\n\n /**\n * Create a new Buffer.\n * @param {Terminal} _terminal - The terminal the Buffer will belong to\n * @param {number} ydisp - The scroll position of the Buffer in the viewport\n * @param {number} ybase - The scroll position of the y cursor (ybase + y = the y position within the Buffer)\n * @param {number} y - The cursor's y position after ybase\n * @param {number} x - The cursor's x position after ybase\n */\n constructor(\n private _terminal: ITerminal\n ) {\n this.clear();\n }\n\n public get lines(): CircularList<[number, string, number][]> {\n return this._lines;\n }\n\n /**\n * Fills the buffer's viewport with blank lines.\n */\n public fillViewportRows(): void {\n if (this._lines.length === 0) {\n let i = this._terminal.rows;\n while (i--) {\n this.lines.push(this._terminal.blankLine());\n }\n }\n }\n\n /**\n * Clears the buffer to it's initial state, discarding all previous data.\n */\n public clear(): void {\n this.ydisp = 0;\n this.ybase = 0;\n this.y = 0;\n this.x = 0;\n this.scrollBottom = 0;\n this.scrollTop = 0;\n this.tabs = {};\n this._lines = new CircularList<[number, string, number][]>(this._terminal.scrollback);\n this.scrollBottom = this._terminal.rows - 1;\n }\n\n /**\n * Resizes the buffer, adjusting its data accordingly.\n * @param newCols The new number of columns.\n * @param newRows The new number of rows.\n */\n public resize(newCols: number, newRows: number): void {\n // Don't resize the buffer if it's empty and hasn't been used yet.\n if (this._lines.length === 0) {\n return;\n }\n\n // Deal with columns increasing (we don't do anything when columns reduce)\n if (this._terminal.cols < newCols) {\n const ch: [number, string, number] = [this._terminal.defAttr, ' ', 1]; // does xterm use the default attr?\n for (let i = 0; i < this._lines.length; i++) {\n // TODO: This should be removed, with tests setup for the case that was\n // causing the underlying bug, see https://github.com/sourcelair/xterm.js/issues/824\n if (this._lines.get(i) === undefined) {\n this._lines.set(i, this._terminal.blankLine(undefined, undefined, newCols));\n }\n while (this._lines.get(i).length < newCols) {\n this._lines.get(i).push(ch);\n }\n }\n }\n\n // Resize rows in both directions as needed\n let addToY = 0;\n if (this._terminal.rows < newRows) {\n for (let y = this._terminal.rows; y < newRows; y++) {\n if (this._lines.length < newRows + this.ybase) {\n if (this.ybase > 0 && this._lines.length <= this.ybase + this.y + addToY + 1) {\n // There is room above the buffer and there are no empty elements below the line,\n // scroll up\n this.ybase--;\n addToY++;\n if (this.ydisp > 0) {\n // Viewport is at the top of the buffer, must increase downwards\n this.ydisp--;\n }\n } else {\n // Add a blank line if there is no buffer left at the top to scroll to, or if there\n // are blank lines after the cursor\n this._lines.push(this._terminal.blankLine(undefined, undefined, newCols));\n }\n }\n }\n } else { // (this._terminal.rows >= newRows)\n for (let y = this._terminal.rows; y > newRows; y--) {\n if (this._lines.length > newRows + this.ybase) {\n if (this._lines.length > this.ybase + this.y + 1) {\n // The line is a blank line below the cursor, remove it\n this._lines.pop();\n } else {\n // The line is the cursor, scroll down\n this.ybase++;\n this.ydisp++;\n }\n }\n }\n }\n\n // Make sure that the cursor stays on screen\n if (this.y >= newRows) {\n this.y = newRows - 1;\n }\n if (addToY) {\n this.y += addToY;\n }\n\n if (this.x >= newCols) {\n this.x = newCols - 1;\n }\n\n this.scrollTop = 0;\n this.scrollBottom = newRows - 1;\n 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