mirror of
https://git.proxmox.com/git/mirror_xterm.js
synced 2025-10-31 05:32:29 +00:00
2389 lines
61 KiB
JavaScript
2389 lines
61 KiB
JavaScript
/**
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* xterm.js: xterm, in the browser
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* Originally forked from (with the author's permission):
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* Fabrice Bellard's javascript vt100 for jslinux:
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* http://bellard.org/jslinux/
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* Copyright (c) 2011 Fabrice Bellard
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* The original design remains. The terminal itself
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* has been extended to include xterm CSI codes, among
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* other features.
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* @license MIT
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*/
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import { CompositionHelper } from './CompositionHelper';
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import { EventEmitter } from './EventEmitter';
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import { Viewport } from './Viewport';
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import { rightClickHandler, pasteHandler, copyHandler } from './handlers/Clipboard';
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import { CircularList } from './utils/CircularList';
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import { C0 } from './EscapeSequences';
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import { InputHandler } from './InputHandler';
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import { Parser } from './Parser';
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import { Renderer } from './Renderer';
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import { Linkifier } from './Linkifier';
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import { SelectionManager } from './SelectionManager';
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import { CharMeasure } from './utils/CharMeasure';
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import * as Browser from './utils/Browser';
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import * as Mouse from './utils/Mouse';
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import { CHARSETS } from './Charsets';
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/**
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* Terminal Emulation References:
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* http://vt100.net/
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* http://invisible-island.net/xterm/ctlseqs/ctlseqs.txt
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* http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
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* http://invisible-island.net/vttest/
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* http://www.inwap.com/pdp10/ansicode.txt
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* http://linux.die.net/man/4/console_codes
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* http://linux.die.net/man/7/urxvt
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*/
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// Let it work inside Node.js for automated testing purposes.
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var document = (typeof window != 'undefined') ? window.document : null;
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/**
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* The amount of write requests to queue before sending an XOFF signal to the
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* pty process. This number must be small in order for ^C and similar sequences
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* to be responsive.
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*/
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var WRITE_BUFFER_PAUSE_THRESHOLD = 5;
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/**
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* The number of writes to perform in a single batch before allowing the
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* renderer to catch up with a 0ms setTimeout.
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*/
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var WRITE_BATCH_SIZE = 300;
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/**
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* The time between cursor blinks. This is driven by JS rather than a CSS
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* animation due to a bug in Chromium that causes it to use excessive CPU time.
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* See https://github.com/Microsoft/vscode/issues/22900
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*/
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var CURSOR_BLINK_INTERVAL = 600;
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/**
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* Terminal
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*/
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/**
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* Creates a new `Terminal` object.
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*
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* @param {object} options An object containing a set of options, the available options are:
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* - `cursorBlink` (boolean): Whether the terminal cursor blinks
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* - `cols` (number): The number of columns of the terminal (horizontal size)
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* - `rows` (number): The number of rows of the terminal (vertical size)
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*
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* @public
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* @class Xterm Xterm
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* @alias module:xterm/src/xterm
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*/
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function Terminal(options) {
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var self = this;
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if (!(this instanceof Terminal)) {
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return new Terminal(arguments[0], arguments[1], arguments[2]);
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}
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self.browser = Browser;
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self.cancel = Terminal.cancel;
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EventEmitter.call(this);
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if (typeof options === 'number') {
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options = {
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cols: arguments[0],
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rows: arguments[1],
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handler: arguments[2]
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};
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}
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options = options || {};
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Object.keys(Terminal.defaults).forEach(function(key) {
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if (options[key] == null) {
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options[key] = Terminal.options[key];
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if (Terminal[key] !== Terminal.defaults[key]) {
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options[key] = Terminal[key];
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}
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}
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self[key] = options[key];
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});
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if (options.colors.length === 8) {
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options.colors = options.colors.concat(Terminal._colors.slice(8));
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} else if (options.colors.length === 16) {
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options.colors = options.colors.concat(Terminal._colors.slice(16));
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} else if (options.colors.length === 10) {
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options.colors = options.colors.slice(0, -2).concat(
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Terminal._colors.slice(8, -2), options.colors.slice(-2));
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} else if (options.colors.length === 18) {
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options.colors = options.colors.concat(
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Terminal._colors.slice(16, -2), options.colors.slice(-2));
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}
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this.colors = options.colors;
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this.options = options;
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// this.context = options.context || window;
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// this.document = options.document || document;
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this.parent = options.body || options.parent || (
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document ? document.getElementsByTagName('body')[0] : null
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);
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this.cols = options.cols || options.geometry[0];
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this.rows = options.rows || options.geometry[1];
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this.geometry = [this.cols, this.rows];
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if (options.handler) {
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this.on('data', options.handler);
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}
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/**
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* The scroll position of the y cursor, ie. ybase + y = the y position within the entire
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* buffer
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*/
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this.ybase = 0;
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/**
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* The scroll position of the viewport
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*/
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this.ydisp = 0;
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/**
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* The cursor's x position after ybase
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*/
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this.x = 0;
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/**
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* The cursor's y position after ybase
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*/
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this.y = 0;
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this.cursorState = 0;
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this.cursorHidden = false;
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this.convertEol;
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this.queue = '';
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this.scrollTop = 0;
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this.scrollBottom = this.rows - 1;
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this.customKeydownHandler = null;
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this.cursorBlinkInterval = null;
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// modes
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this.applicationKeypad = false;
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this.applicationCursor = false;
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this.originMode = false;
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this.insertMode = false;
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this.wraparoundMode = true; // defaults: xterm - true, vt100 - false
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this.normal = null;
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// charset
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this.charset = null;
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this.gcharset = null;
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this.glevel = 0;
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this.charsets = [null];
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// mouse properties
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this.decLocator;
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this.x10Mouse;
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this.vt200Mouse;
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this.vt300Mouse;
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this.normalMouse;
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this.mouseEvents;
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this.sendFocus;
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this.utfMouse;
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this.sgrMouse;
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this.urxvtMouse;
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// misc
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this.element;
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this.children;
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this.refreshStart;
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this.refreshEnd;
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this.savedX;
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this.savedY;
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this.savedCols;
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// stream
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this.readable = true;
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this.writable = true;
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this.defAttr = (0 << 18) | (257 << 9) | (256 << 0);
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this.curAttr = this.defAttr;
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this.params = [];
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this.currentParam = 0;
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this.prefix = '';
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this.postfix = '';
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this.inputHandler = new InputHandler(this);
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this.parser = new Parser(this.inputHandler, this);
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// Reuse renderer if the Terminal is being recreated via a Terminal.reset call.
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this.renderer = this.renderer || null;
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this.selectionManager = this.selectionManager || null;
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this.linkifier = this.linkifier || new Linkifier();
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// user input states
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this.writeBuffer = [];
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this.writeInProgress = false;
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/**
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* Whether _xterm.js_ sent XOFF in order to catch up with the pty process.
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* This is a distinct state from writeStopped so that if the user requested
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* XOFF via ^S that it will not automatically resume when the writeBuffer goes
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* below threshold.
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*/
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this.xoffSentToCatchUp = false;
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/** Whether writing has been stopped as a result of XOFF */
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this.writeStopped = false;
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// leftover surrogate high from previous write invocation
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this.surrogate_high = '';
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/**
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* An array of all lines in the entire buffer, including the prompt. The lines are array of
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* characters which are 2-length arrays where [0] is an attribute and [1] is the character.
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*/
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this.lines = new CircularList(this.scrollback);
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var i = this.rows;
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while (i--) {
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this.lines.push(this.blankLine());
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}
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this.tabs;
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this.setupStops();
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// Store if user went browsing history in scrollback
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this.userScrolling = false;
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}
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inherits(Terminal, EventEmitter);
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/**
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* back_color_erase feature for xterm.
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*/
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Terminal.prototype.eraseAttr = function() {
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// if (this.is('screen')) return this.defAttr;
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return (this.defAttr & ~0x1ff) | (this.curAttr & 0x1ff);
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};
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/**
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* Colors
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*/
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// Colors 0-15
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Terminal.tangoColors = [
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// dark:
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'#2e3436',
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'#cc0000',
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'#4e9a06',
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'#c4a000',
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'#3465a4',
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'#75507b',
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'#06989a',
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'#d3d7cf',
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// bright:
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'#555753',
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'#ef2929',
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'#8ae234',
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'#fce94f',
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'#729fcf',
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'#ad7fa8',
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'#34e2e2',
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'#eeeeec'
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];
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// Colors 0-15 + 16-255
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// Much thanks to TooTallNate for writing this.
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Terminal.colors = (function() {
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var colors = Terminal.tangoColors.slice()
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, r = [0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff]
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, i;
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// 16-231
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i = 0;
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for (; i < 216; i++) {
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out(r[(i / 36) % 6 | 0], r[(i / 6) % 6 | 0], r[i % 6]);
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}
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// 232-255 (grey)
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i = 0;
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for (; i < 24; i++) {
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r = 8 + i * 10;
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out(r, r, r);
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}
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function out(r, g, b) {
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colors.push('#' + hex(r) + hex(g) + hex(b));
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}
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function hex(c) {
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c = c.toString(16);
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return c.length < 2 ? '0' + c : c;
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}
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return colors;
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})();
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Terminal._colors = Terminal.colors.slice();
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Terminal.vcolors = (function() {
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var out = []
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, colors = Terminal.colors
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, i = 0
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, color;
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for (; i < 256; i++) {
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color = parseInt(colors[i].substring(1), 16);
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out.push([
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(color >> 16) & 0xff,
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(color >> 8) & 0xff,
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color & 0xff
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]);
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}
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return out;
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})();
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/**
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* Options
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*/
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Terminal.defaults = {
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colors: Terminal.colors,
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theme: 'default',
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convertEol: false,
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termName: 'xterm',
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geometry: [80, 24],
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cursorBlink: false,
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cursorStyle: 'block',
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visualBell: false,
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popOnBell: false,
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scrollback: 1000,
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screenKeys: false,
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debug: false,
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cancelEvents: false,
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disableStdin: false,
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useFlowControl: false,
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tabStopWidth: 8
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// programFeatures: false,
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// focusKeys: false,
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};
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Terminal.options = {};
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Terminal.focus = null;
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each(keys(Terminal.defaults), function(key) {
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Terminal[key] = Terminal.defaults[key];
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Terminal.options[key] = Terminal.defaults[key];
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});
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/**
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* Focus the terminal. Delegates focus handling to the terminal's DOM element.
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*/
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Terminal.prototype.focus = function() {
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return this.textarea.focus();
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};
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/**
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* Retrieves an option's value from the terminal.
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* @param {string} key The option key.
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*/
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Terminal.prototype.getOption = function(key, value) {
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if (!(key in Terminal.defaults)) {
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throw new Error('No option with key "' + key + '"');
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}
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if (typeof this.options[key] !== 'undefined') {
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return this.options[key];
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}
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return this[key];
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};
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/**
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* Sets an option on the terminal.
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* @param {string} key The option key.
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* @param {string} value The option value.
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*/
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Terminal.prototype.setOption = function(key, value) {
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if (!(key in Terminal.defaults)) {
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throw new Error('No option with key "' + key + '"');
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}
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switch (key) {
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case 'scrollback':
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if (this.options[key] !== value) {
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if (this.lines.length > value) {
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const amountToTrim = this.lines.length - value;
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const needsRefresh = (this.ydisp - amountToTrim < 0);
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this.lines.trimStart(amountToTrim);
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this.ybase = Math.max(this.ybase - amountToTrim, 0);
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this.ydisp = Math.max(this.ydisp - amountToTrim, 0);
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if (needsRefresh) {
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this.refresh(0, this.rows - 1);
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}
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}
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this.lines.maxLength = value;
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this.viewport.syncScrollArea();
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}
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break;
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}
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this[key] = value;
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this.options[key] = value;
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switch (key) {
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case 'cursorBlink': this.setCursorBlinking(value); break;
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case 'cursorStyle':
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// Style 'block' applies with no class
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this.element.classList.toggle(`xterm-cursor-style-underline`, value === 'underline');
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this.element.classList.toggle(`xterm-cursor-style-bar`, value === 'bar');
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break;
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case 'tabStopWidth': this.setupStops(); break;
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}
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};
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Terminal.prototype.restartCursorBlinking = function () {
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this.setCursorBlinking(this.options.cursorBlink);
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};
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Terminal.prototype.setCursorBlinking = function (enabled) {
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this.element.classList.toggle('xterm-cursor-blink', enabled);
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this.clearCursorBlinkingInterval();
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if (enabled) {
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var self = this;
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this.cursorBlinkInterval = setInterval(function () {
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self.element.classList.toggle('xterm-cursor-blink-on');
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}, CURSOR_BLINK_INTERVAL);
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}
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};
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Terminal.prototype.clearCursorBlinkingInterval = function () {
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this.element.classList.remove('xterm-cursor-blink-on');
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if (this.cursorBlinkInterval) {
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clearInterval(this.cursorBlinkInterval);
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this.cursorBlinkInterval = null;
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}
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};
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/**
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* Binds the desired focus behavior on a given terminal object.
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*
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* @static
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*/
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Terminal.bindFocus = function (term) {
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on(term.textarea, 'focus', function (ev) {
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if (term.sendFocus) {
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term.send(C0.ESC + '[I');
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}
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term.element.classList.add('focus');
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term.showCursor();
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term.restartCursorBlinking.apply(term);
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Terminal.focus = term;
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term.emit('focus', {terminal: term});
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});
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};
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/**
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* Blur the terminal. Delegates blur handling to the terminal's DOM element.
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*/
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Terminal.prototype.blur = function() {
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return this.textarea.blur();
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};
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/**
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* Binds the desired blur behavior on a given terminal object.
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*
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* @static
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*/
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Terminal.bindBlur = function (term) {
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on(term.textarea, 'blur', function (ev) {
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term.refresh(term.y, term.y);
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if (term.sendFocus) {
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term.send(C0.ESC + '[O');
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}
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term.element.classList.remove('focus');
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term.clearCursorBlinkingInterval.apply(term);
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Terminal.focus = null;
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term.emit('blur', {terminal: term});
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});
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};
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/**
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* Initialize default behavior
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*/
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Terminal.prototype.initGlobal = function() {
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var term = this;
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Terminal.bindKeys(this);
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Terminal.bindFocus(this);
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Terminal.bindBlur(this);
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// Bind clipboard functionality
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on(this.element, 'copy', function (ev) {
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copyHandler.call(this, ev, term, term.selectionManager);
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});
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on(this.textarea, 'paste', function (ev) {
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pasteHandler.call(this, ev, term);
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});
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on(this.element, 'paste', function (ev) {
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pasteHandler.call(this, ev, term);
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});
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function rightClickHandlerWrapper (ev) {
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rightClickHandler.call(this, ev, term);
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}
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if (term.browser.isFirefox) {
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on(this.element, 'mousedown', function (ev) {
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if (ev.button == 2) {
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rightClickHandlerWrapper(ev);
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}
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});
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} else {
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on(this.element, 'contextmenu', rightClickHandlerWrapper);
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}
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};
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/**
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* Apply key handling to the terminal
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*/
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Terminal.bindKeys = function(term) {
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on(term.element, 'keydown', function(ev) {
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if (document.activeElement != this) {
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return;
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}
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term.keyDown(ev);
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}, true);
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|
on(term.element, 'keypress', function(ev) {
|
|
if (document.activeElement != this) {
|
|
return;
|
|
}
|
|
term.keyPress(ev);
|
|
}, true);
|
|
|
|
on(term.element, 'keyup', function(ev) {
|
|
if (!wasMondifierKeyOnlyEvent(ev)) {
|
|
term.focus(term);
|
|
}
|
|
}, true);
|
|
|
|
on(term.textarea, 'keydown', function(ev) {
|
|
term.keyDown(ev);
|
|
}, true);
|
|
|
|
on(term.textarea, 'keypress', function(ev) {
|
|
term.keyPress(ev);
|
|
// Truncate the textarea's value, since it is not needed
|
|
this.value = '';
|
|
}, true);
|
|
|
|
on(term.textarea, 'compositionstart', term.compositionHelper.compositionstart.bind(term.compositionHelper));
|
|
on(term.textarea, 'compositionupdate', term.compositionHelper.compositionupdate.bind(term.compositionHelper));
|
|
on(term.textarea, 'compositionend', term.compositionHelper.compositionend.bind(term.compositionHelper));
|
|
term.on('refresh', term.compositionHelper.updateCompositionElements.bind(term.compositionHelper));
|
|
term.on('refresh', function (data) {
|
|
term.queueLinkification(data.start, data.end)
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* Insert the given row to the terminal or produce a new one
|
|
* if no row argument is passed. Return the inserted row.
|
|
* @param {HTMLElement} row (optional) The row to append to the terminal.
|
|
*/
|
|
Terminal.prototype.insertRow = function (row) {
|
|
if (typeof row != 'object') {
|
|
row = document.createElement('div');
|
|
}
|
|
|
|
this.rowContainer.appendChild(row);
|
|
this.children.push(row);
|
|
|
|
return row;
|
|
};
|
|
|
|
/**
|
|
* Opens the terminal within an element.
|
|
*
|
|
* @param {HTMLElement} parent The element to create the terminal within.
|
|
* @param {boolean} focus Focus the terminal, after it gets instantiated in the DOM
|
|
*/
|
|
Terminal.prototype.open = function(parent, focus) {
|
|
var self=this, i=0, div;
|
|
|
|
this.parent = parent || this.parent;
|
|
|
|
if (!this.parent) {
|
|
throw new Error('Terminal requires a parent element.');
|
|
}
|
|
|
|
// Grab global elements
|
|
this.context = this.parent.ownerDocument.defaultView;
|
|
this.document = this.parent.ownerDocument;
|
|
this.body = this.document.getElementsByTagName('body')[0];
|
|
|
|
//Create main element container
|
|
this.element = this.document.createElement('div');
|
|
this.element.classList.add('terminal');
|
|
this.element.classList.add('xterm');
|
|
this.element.classList.add('xterm-theme-' + this.theme);
|
|
this.setCursorBlinking(this.options.cursorBlink);
|
|
|
|
this.element.style.height;
|
|
this.element.setAttribute('tabindex', 0);
|
|
|
|
this.viewportElement = document.createElement('div');
|
|
this.viewportElement.classList.add('xterm-viewport');
|
|
this.element.appendChild(this.viewportElement);
|
|
this.viewportScrollArea = document.createElement('div');
|
|
this.viewportScrollArea.classList.add('xterm-scroll-area');
|
|
this.viewportElement.appendChild(this.viewportScrollArea);
|
|
|
|
// Create the selection container. This needs to be added before the
|
|
// rowContainer as the selection must be below the text.
|
|
this.selectionContainer = document.createElement('div');
|
|
this.selectionContainer.classList.add('xterm-selection');
|
|
this.element.appendChild(this.selectionContainer);
|
|
|
|
// Create the container that will hold the lines of the terminal and then
|
|
// produce the lines the lines.
|
|
this.rowContainer = document.createElement('div');
|
|
this.rowContainer.classList.add('xterm-rows');
|
|
this.element.appendChild(this.rowContainer);
|
|
this.children = [];
|
|
this.linkifier.attachToDom(document, this.children);
|
|
|
|
// Create the container that will hold helpers like the textarea for
|
|
// capturing DOM Events. Then produce the helpers.
|
|
this.helperContainer = document.createElement('div');
|
|
this.helperContainer.classList.add('xterm-helpers');
|
|
// TODO: This should probably be inserted once it's filled to prevent an additional layout
|
|
this.element.appendChild(this.helperContainer);
|
|
this.textarea = document.createElement('textarea');
|
|
this.textarea.classList.add('xterm-helper-textarea');
|
|
this.textarea.setAttribute('autocorrect', 'off');
|
|
this.textarea.setAttribute('autocapitalize', 'off');
|
|
this.textarea.setAttribute('spellcheck', 'false');
|
|
this.textarea.tabIndex = 0;
|
|
this.textarea.addEventListener('focus', function() {
|
|
self.emit('focus', {terminal: self});
|
|
});
|
|
this.textarea.addEventListener('blur', function() {
|
|
self.emit('blur', {terminal: self});
|
|
});
|
|
this.helperContainer.appendChild(this.textarea);
|
|
|
|
this.compositionView = document.createElement('div');
|
|
this.compositionView.classList.add('composition-view');
|
|
this.compositionHelper = new CompositionHelper(this.textarea, this.compositionView, this);
|
|
this.helperContainer.appendChild(this.compositionView);
|
|
|
|
this.charSizeStyleElement = document.createElement('style');
|
|
this.helperContainer.appendChild(this.charSizeStyleElement);
|
|
|
|
for (; i < this.rows; i++) {
|
|
this.insertRow();
|
|
}
|
|
this.parent.appendChild(this.element);
|
|
|
|
this.charMeasure = new CharMeasure(document, this.helperContainer);
|
|
this.charMeasure.on('charsizechanged', function () {
|
|
self.updateCharSizeCSS();
|
|
});
|
|
this.charMeasure.measure();
|
|
|
|
this.viewport = new Viewport(this, this.viewportElement, this.viewportScrollArea, this.charMeasure);
|
|
this.renderer = new Renderer(this);
|
|
this.selectionManager = new SelectionManager(this, this.lines, this.rowContainer, this.selectionContainer, this.charMeasure);
|
|
this.selectionManager.on('refresh', data => this.renderer.refreshSelection(data.start, data.end));
|
|
this.on('scroll', () => this.selectionManager.refresh());
|
|
this.viewportElement.addEventListener('scroll', () => this.selectionManager.refresh());
|
|
|
|
// Setup loop that draws to screen
|
|
this.refresh(0, this.rows - 1);
|
|
|
|
// Initialize global actions that
|
|
// need to be taken on the document.
|
|
this.initGlobal();
|
|
|
|
/**
|
|
* Automatic focus functionality.
|
|
* TODO: Default to `false` starting with xterm.js 3.0.
|
|
*/
|
|
if (typeof focus == 'undefined') {
|
|
let message = 'You did not pass the `focus` argument in `Terminal.prototype.open()`.\n';
|
|
|
|
message += 'The `focus` argument now defaults to `true` but starting with xterm.js 3.0 ';
|
|
message += 'it will default to `false`.';
|
|
|
|
console.warn(message);
|
|
focus = true;
|
|
}
|
|
|
|
if (focus) {
|
|
this.focus();
|
|
}
|
|
|
|
on(this.element, 'click', function() {
|
|
var selection = document.getSelection(),
|
|
collapsed = selection.isCollapsed,
|
|
isRange = typeof collapsed == 'boolean' ? !collapsed : selection.type == 'Range';
|
|
if (!isRange) {
|
|
self.focus();
|
|
}
|
|
});
|
|
|
|
// Listen for mouse events and translate
|
|
// them into terminal mouse protocols.
|
|
this.bindMouse();
|
|
|
|
/**
|
|
* This event is emitted when terminal has completed opening.
|
|
*
|
|
* @event open
|
|
*/
|
|
this.emit('open');
|
|
};
|
|
|
|
|
|
/**
|
|
* Attempts to load an add-on using CommonJS or RequireJS (whichever is available).
|
|
* @param {string} addon The name of the addon to load
|
|
* @static
|
|
*/
|
|
Terminal.loadAddon = function(addon, callback) {
|
|
if (typeof exports === 'object' && typeof module === 'object') {
|
|
// CommonJS
|
|
return require('./addons/' + addon + '/' + addon);
|
|
} else if (typeof define == 'function') {
|
|
// RequireJS
|
|
return require(['./addons/' + addon + '/' + addon], callback);
|
|
} else {
|
|
console.error('Cannot load a module without a CommonJS or RequireJS environment.');
|
|
return false;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Updates the helper CSS class with any changes necessary after the terminal's
|
|
* character width has been changed.
|
|
*/
|
|
Terminal.prototype.updateCharSizeCSS = function() {
|
|
this.charSizeStyleElement.textContent =
|
|
`.xterm-wide-char{width:${this.charMeasure.width * 2}px;}` +
|
|
`.xterm-normal-char{width:${this.charMeasure.width}px;}`
|
|
}
|
|
|
|
/**
|
|
* XTerm mouse events
|
|
* http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking
|
|
* To better understand these
|
|
* the xterm code is very helpful:
|
|
* Relevant files:
|
|
* button.c, charproc.c, misc.c
|
|
* Relevant functions in xterm/button.c:
|
|
* BtnCode, EmitButtonCode, EditorButton, SendMousePosition
|
|
*/
|
|
Terminal.prototype.bindMouse = function() {
|
|
var el = this.element, self = this, pressed = 32;
|
|
|
|
// mouseup, mousedown, wheel
|
|
// left click: ^[[M 3<^[[M#3<
|
|
// wheel up: ^[[M`3>
|
|
function sendButton(ev) {
|
|
var button
|
|
, pos;
|
|
|
|
// get the xterm-style button
|
|
button = getButton(ev);
|
|
|
|
// get mouse coordinates
|
|
pos = Mouse.getCoords(ev, this.rowContainer, this.charMeasure);
|
|
if (!pos) return;
|
|
|
|
sendEvent(button, pos);
|
|
|
|
switch (ev.overrideType || ev.type) {
|
|
case 'mousedown':
|
|
pressed = button;
|
|
break;
|
|
case 'mouseup':
|
|
// keep it at the left
|
|
// button, just in case.
|
|
pressed = 32;
|
|
break;
|
|
case 'wheel':
|
|
// nothing. don't
|
|
// interfere with
|
|
// `pressed`.
|
|
break;
|
|
}
|
|
}
|
|
|
|
// motion example of a left click:
|
|
// ^[[M 3<^[[M@4<^[[M@5<^[[M@6<^[[M@7<^[[M#7<
|
|
function sendMove(ev) {
|
|
var button = pressed
|
|
, pos;
|
|
|
|
pos = Mouse.getCoords(ev, this.rowContainer, this.charMeasure);
|
|
if (!pos) return;
|
|
|
|
// buttons marked as motions
|
|
// are incremented by 32
|
|
button += 32;
|
|
|
|
sendEvent(button, pos);
|
|
}
|
|
|
|
// encode button and
|
|
// position to characters
|
|
function encode(data, ch) {
|
|
if (!self.utfMouse) {
|
|
if (ch === 255) return data.push(0);
|
|
if (ch > 127) ch = 127;
|
|
data.push(ch);
|
|
} else {
|
|
if (ch === 2047) return data.push(0);
|
|
if (ch < 127) {
|
|
data.push(ch);
|
|
} else {
|
|
if (ch > 2047) ch = 2047;
|
|
data.push(0xC0 | (ch >> 6));
|
|
data.push(0x80 | (ch & 0x3F));
|
|
}
|
|
}
|
|
}
|
|
|
|
// send a mouse event:
|
|
// regular/utf8: ^[[M Cb Cx Cy
|
|
// urxvt: ^[[ Cb ; Cx ; Cy M
|
|
// sgr: ^[[ Cb ; Cx ; Cy M/m
|
|
// vt300: ^[[ 24(1/3/5)~ [ Cx , Cy ] \r
|
|
// locator: CSI P e ; P b ; P r ; P c ; P p & w
|
|
function sendEvent(button, pos) {
|
|
// self.emit('mouse', {
|
|
// x: pos.x - 32,
|
|
// y: pos.x - 32,
|
|
// button: button
|
|
// });
|
|
|
|
if (self.vt300Mouse) {
|
|
// NOTE: Unstable.
|
|
// http://www.vt100.net/docs/vt3xx-gp/chapter15.html
|
|
button &= 3;
|
|
pos.x -= 32;
|
|
pos.y -= 32;
|
|
var data = C0.ESC + '[24';
|
|
if (button === 0) data += '1';
|
|
else if (button === 1) data += '3';
|
|
else if (button === 2) data += '5';
|
|
else if (button === 3) return;
|
|
else data += '0';
|
|
data += '~[' + pos.x + ',' + pos.y + ']\r';
|
|
self.send(data);
|
|
return;
|
|
}
|
|
|
|
if (self.decLocator) {
|
|
// NOTE: Unstable.
|
|
button &= 3;
|
|
pos.x -= 32;
|
|
pos.y -= 32;
|
|
if (button === 0) button = 2;
|
|
else if (button === 1) button = 4;
|
|
else if (button === 2) button = 6;
|
|
else if (button === 3) button = 3;
|
|
self.send(C0.ESC + '['
|
|
+ button
|
|
+ ';'
|
|
+ (button === 3 ? 4 : 0)
|
|
+ ';'
|
|
+ pos.y
|
|
+ ';'
|
|
+ pos.x
|
|
+ ';'
|
|
+ (pos.page || 0)
|
|
+ '&w');
|
|
return;
|
|
}
|
|
|
|
if (self.urxvtMouse) {
|
|
pos.x -= 32;
|
|
pos.y -= 32;
|
|
pos.x++;
|
|
pos.y++;
|
|
self.send(C0.ESC + '[' + button + ';' + pos.x + ';' + pos.y + 'M');
|
|
return;
|
|
}
|
|
|
|
if (self.sgrMouse) {
|
|
pos.x -= 32;
|
|
pos.y -= 32;
|
|
self.send(C0.ESC + '[<'
|
|
+ (((button & 3) === 3 ? button & ~3 : button) - 32)
|
|
+ ';'
|
|
+ pos.x
|
|
+ ';'
|
|
+ pos.y
|
|
+ ((button & 3) === 3 ? 'm' : 'M'));
|
|
return;
|
|
}
|
|
|
|
var data = [];
|
|
|
|
encode(data, button);
|
|
encode(data, pos.x);
|
|
encode(data, pos.y);
|
|
|
|
self.send(C0.ESC + '[M' + String.fromCharCode.apply(String, data));
|
|
}
|
|
|
|
function getButton(ev) {
|
|
var button
|
|
, shift
|
|
, meta
|
|
, ctrl
|
|
, mod;
|
|
|
|
// two low bits:
|
|
// 0 = left
|
|
// 1 = middle
|
|
// 2 = right
|
|
// 3 = release
|
|
// wheel up/down:
|
|
// 1, and 2 - with 64 added
|
|
switch (ev.overrideType || ev.type) {
|
|
case 'mousedown':
|
|
button = ev.button != null
|
|
? +ev.button
|
|
: ev.which != null
|
|
? ev.which - 1
|
|
: null;
|
|
|
|
if (self.browser.isMSIE) {
|
|
button = button === 1 ? 0 : button === 4 ? 1 : button;
|
|
}
|
|
break;
|
|
case 'mouseup':
|
|
button = 3;
|
|
break;
|
|
case 'DOMMouseScroll':
|
|
button = ev.detail < 0
|
|
? 64
|
|
: 65;
|
|
break;
|
|
case 'wheel':
|
|
button = ev.wheelDeltaY > 0
|
|
? 64
|
|
: 65;
|
|
break;
|
|
}
|
|
|
|
// next three bits are the modifiers:
|
|
// 4 = shift, 8 = meta, 16 = control
|
|
shift = ev.shiftKey ? 4 : 0;
|
|
meta = ev.metaKey ? 8 : 0;
|
|
ctrl = ev.ctrlKey ? 16 : 0;
|
|
mod = shift | meta | ctrl;
|
|
|
|
// no mods
|
|
if (self.vt200Mouse) {
|
|
// ctrl only
|
|
mod &= ctrl;
|
|
} else if (!self.normalMouse) {
|
|
mod = 0;
|
|
}
|
|
|
|
// increment to SP
|
|
button = (32 + (mod << 2)) + button;
|
|
|
|
return button;
|
|
}
|
|
|
|
// mouse coordinates measured in cols/rows
|
|
// function getCoords(ev) {
|
|
// var x, y, w, h, el;
|
|
|
|
// // ignore browsers without pageX for now
|
|
// if (ev.pageX == null) return;
|
|
|
|
// x = ev.pageX;
|
|
// y = ev.pageY;
|
|
// el = self.rowContainer;
|
|
|
|
// // should probably check offsetParent
|
|
// // but this is more portable
|
|
// while (el && el !== self.document.documentElement) {
|
|
// x -= el.offsetLeft;
|
|
// y -= el.offsetTop;
|
|
// el = 'offsetParent' in el
|
|
// ? el.offsetParent
|
|
// : el.parentNode;
|
|
// }
|
|
|
|
// // convert to cols/rows
|
|
// x = Math.ceil(x / self.charMeasure.width);
|
|
// y = Math.ceil(y / self.charMeasure.height);
|
|
|
|
// // be sure to avoid sending
|
|
// // bad positions to the program
|
|
// if (x < 0) x = 0;
|
|
// if (x > self.cols) x = self.cols;
|
|
// if (y < 0) y = 0;
|
|
// if (y > self.rows) y = self.rows;
|
|
|
|
// // xterm sends raw bytes and
|
|
// // starts at 32 (SP) for each.
|
|
// x += 32;
|
|
// y += 32;
|
|
|
|
// return {
|
|
// x: x,
|
|
// y: y,
|
|
// type: 'wheel'
|
|
// };
|
|
// }
|
|
|
|
on(el, 'mousedown', function(ev) {
|
|
if (!self.mouseEvents) return;
|
|
|
|
// send the button
|
|
sendButton(ev);
|
|
|
|
// ensure focus
|
|
self.focus();
|
|
|
|
// fix for odd bug
|
|
//if (self.vt200Mouse && !self.normalMouse) {
|
|
if (self.vt200Mouse) {
|
|
ev.overrideType = 'mouseup';
|
|
sendButton(ev);
|
|
return self.cancel(ev);
|
|
}
|
|
|
|
// bind events
|
|
if (self.normalMouse) on(self.document, 'mousemove', sendMove);
|
|
|
|
// x10 compatibility mode can't send button releases
|
|
if (!self.x10Mouse) {
|
|
on(self.document, 'mouseup', function up(ev) {
|
|
sendButton(ev);
|
|
if (self.normalMouse) off(self.document, 'mousemove', sendMove);
|
|
off(self.document, 'mouseup', up);
|
|
return self.cancel(ev);
|
|
});
|
|
}
|
|
|
|
return self.cancel(ev);
|
|
});
|
|
|
|
//if (self.normalMouse) {
|
|
// on(self.document, 'mousemove', sendMove);
|
|
//}
|
|
|
|
on(el, 'wheel', function(ev) {
|
|
if (!self.mouseEvents) return;
|
|
if (self.x10Mouse
|
|
|| self.vt300Mouse
|
|
|| self.decLocator) return;
|
|
sendButton(ev);
|
|
return self.cancel(ev);
|
|
});
|
|
|
|
// allow wheel scrolling in
|
|
// the shell for example
|
|
on(el, 'wheel', function(ev) {
|
|
if (self.mouseEvents) return;
|
|
self.viewport.onWheel(ev);
|
|
return self.cancel(ev);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Destroys the terminal.
|
|
*/
|
|
Terminal.prototype.destroy = function() {
|
|
this.readable = false;
|
|
this.writable = false;
|
|
this._events = {};
|
|
this.handler = function() {};
|
|
this.write = function() {};
|
|
if (this.element && this.element.parentNode) {
|
|
this.element.parentNode.removeChild(this.element);
|
|
}
|
|
//this.emit('close');
|
|
};
|
|
|
|
/**
|
|
* Tells the renderer to refresh terminal content between two rows (inclusive) at the next
|
|
* opportunity.
|
|
* @param {number} start The row to start from (between 0 and this.rows - 1).
|
|
* @param {number} end The row to end at (between start and this.rows - 1).
|
|
*/
|
|
Terminal.prototype.refresh = function(start, end) {
|
|
if (this.renderer) {
|
|
this.renderer.queueRefresh(start, end);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Queues linkification for the specified rows.
|
|
* @param {number} start The row to start from (between 0 and this.rows - 1).
|
|
* @param {number} end The row to end at (between start and this.rows - 1).
|
|
*/
|
|
Terminal.prototype.queueLinkification = function(start, end) {
|
|
if (this.linkifier) {
|
|
for (let i = start; i <= end; i++) {
|
|
this.linkifier.linkifyRow(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Display the cursor element
|
|
*/
|
|
Terminal.prototype.showCursor = function() {
|
|
if (!this.cursorState) {
|
|
this.cursorState = 1;
|
|
this.refresh(this.y, this.y);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Scroll the terminal down 1 row, creating a blank line.
|
|
*/
|
|
Terminal.prototype.scroll = function() {
|
|
var row;
|
|
|
|
// Make room for the new row in lines
|
|
if (this.lines.length === this.lines.maxLength) {
|
|
this.lines.trimStart(1);
|
|
this.ybase--;
|
|
if (this.ydisp !== 0) {
|
|
this.ydisp--;
|
|
}
|
|
}
|
|
|
|
this.ybase++;
|
|
|
|
// TODO: Why is this done twice?
|
|
if (!this.userScrolling) {
|
|
this.ydisp = this.ybase;
|
|
}
|
|
|
|
// last line
|
|
row = this.ybase + this.rows - 1;
|
|
|
|
// subtract the bottom scroll region
|
|
row -= this.rows - 1 - this.scrollBottom;
|
|
|
|
if (row === this.lines.length) {
|
|
// Optimization: pushing is faster than splicing when they amount to the same behavior
|
|
this.lines.push(this.blankLine());
|
|
} else {
|
|
// add our new line
|
|
this.lines.splice(row, 0, this.blankLine());
|
|
}
|
|
|
|
if (this.scrollTop !== 0) {
|
|
if (this.ybase !== 0) {
|
|
this.ybase--;
|
|
if (!this.userScrolling) {
|
|
this.ydisp = this.ybase;
|
|
}
|
|
}
|
|
this.lines.splice(this.ybase + this.scrollTop, 1);
|
|
}
|
|
|
|
// this.maxRange();
|
|
this.updateRange(this.scrollTop);
|
|
this.updateRange(this.scrollBottom);
|
|
|
|
/**
|
|
* This event is emitted whenever the terminal is scrolled.
|
|
* The one parameter passed is the new y display position.
|
|
*
|
|
* @event scroll
|
|
*/
|
|
this.emit('scroll', this.ydisp);
|
|
};
|
|
|
|
/**
|
|
* Scroll the display of the terminal
|
|
* @param {number} disp The number of lines to scroll down (negatives scroll up).
|
|
* @param {boolean} suppressScrollEvent Don't emit the scroll event as scrollDisp. This is used
|
|
* to avoid unwanted events being handled by the veiwport when the event was triggered from the
|
|
* viewport originally.
|
|
*/
|
|
Terminal.prototype.scrollDisp = function(disp, suppressScrollEvent) {
|
|
if (disp < 0) {
|
|
this.userScrolling = true;
|
|
} else if (disp + this.ydisp >= this.ybase) {
|
|
this.userScrolling = false;
|
|
}
|
|
|
|
this.ydisp += disp;
|
|
|
|
if (this.ydisp > this.ybase) {
|
|
this.ydisp = this.ybase;
|
|
} else if (this.ydisp < 0) {
|
|
this.ydisp = 0;
|
|
}
|
|
|
|
if (!suppressScrollEvent) {
|
|
this.emit('scroll', this.ydisp);
|
|
}
|
|
|
|
this.refresh(0, this.rows - 1);
|
|
};
|
|
|
|
/**
|
|
* Scroll the display of the terminal by a number of pages.
|
|
* @param {number} pageCount The number of pages to scroll (negative scrolls up).
|
|
*/
|
|
Terminal.prototype.scrollPages = function(pageCount) {
|
|
this.scrollDisp(pageCount * (this.rows - 1));
|
|
}
|
|
|
|
/**
|
|
* Scrolls the display of the terminal to the top.
|
|
*/
|
|
Terminal.prototype.scrollToTop = function() {
|
|
this.scrollDisp(-this.ydisp);
|
|
}
|
|
|
|
/**
|
|
* Scrolls the display of the terminal to the bottom.
|
|
*/
|
|
Terminal.prototype.scrollToBottom = function() {
|
|
this.scrollDisp(this.ybase - this.ydisp);
|
|
}
|
|
|
|
/**
|
|
* Writes text to the terminal.
|
|
* @param {string} text The text to write to the terminal.
|
|
*/
|
|
Terminal.prototype.write = function(data) {
|
|
this.writeBuffer.push(data);
|
|
|
|
// Send XOFF to pause the pty process if the write buffer becomes too large so
|
|
// xterm.js can catch up before more data is sent. This is necessary in order
|
|
// to keep signals such as ^C responsive.
|
|
if (this.options.useFlowControl && !this.xoffSentToCatchUp && this.writeBuffer.length >= WRITE_BUFFER_PAUSE_THRESHOLD) {
|
|
// XOFF - stop pty pipe
|
|
// XON will be triggered by emulator before processing data chunk
|
|
this.send(C0.DC3);
|
|
this.xoffSentToCatchUp = true;
|
|
}
|
|
|
|
if (!this.writeInProgress && this.writeBuffer.length > 0) {
|
|
// Kick off a write which will write all data in sequence recursively
|
|
this.writeInProgress = true;
|
|
// Kick off an async innerWrite so more writes can come in while processing data
|
|
var self = this;
|
|
setTimeout(function () {
|
|
self.innerWrite();
|
|
});
|
|
}
|
|
}
|
|
|
|
Terminal.prototype.innerWrite = function() {
|
|
var writeBatch = this.writeBuffer.splice(0, WRITE_BATCH_SIZE);
|
|
while (writeBatch.length > 0) {
|
|
var data = writeBatch.shift();
|
|
var l = data.length, i = 0, j, cs, ch, code, low, ch_width, row;
|
|
|
|
// If XOFF was sent in order to catch up with the pty process, resume it if
|
|
// the writeBuffer is empty to allow more data to come in.
|
|
if (this.xoffSentToCatchUp && writeBatch.length === 0 && this.writeBuffer.length === 0) {
|
|
this.send(C0.DC1);
|
|
this.xoffSentToCatchUp = false;
|
|
}
|
|
|
|
this.refreshStart = this.y;
|
|
this.refreshEnd = this.y;
|
|
|
|
this.parser.parse(data);
|
|
|
|
this.updateRange(this.y);
|
|
this.refresh(this.refreshStart, this.refreshEnd);
|
|
}
|
|
if (this.writeBuffer.length > 0) {
|
|
// Allow renderer to catch up before processing the next batch
|
|
var self = this;
|
|
setTimeout(function () {
|
|
self.innerWrite();
|
|
}, 0);
|
|
} else {
|
|
this.writeInProgress = false;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Writes text to the terminal, followed by a break line character (\n).
|
|
* @param {string} text The text to write to the terminal.
|
|
*/
|
|
Terminal.prototype.writeln = function(data) {
|
|
this.write(data + '\r\n');
|
|
};
|
|
|
|
/**
|
|
* Attaches a custom keydown handler which is run before keys are processed, giving consumers of
|
|
* xterm.js ultimate control as to what keys should be processed by the terminal and what keys
|
|
* should not.
|
|
* @param {function} customKeydownHandler The custom KeyboardEvent handler to attach. This is a
|
|
* function that takes a KeyboardEvent, allowing consumers to stop propogation and/or prevent
|
|
* the default action. The function returns whether the event should be processed by xterm.js.
|
|
*/
|
|
Terminal.prototype.attachCustomKeydownHandler = function(customKeydownHandler) {
|
|
this.customKeydownHandler = customKeydownHandler;
|
|
}
|
|
|
|
/**
|
|
* Attaches a http(s) link handler, forcing web links to behave differently to
|
|
* regular <a> tags. This will trigger a refresh as links potentially need to be
|
|
* reconstructed. Calling this with null will remove the handler.
|
|
* @param {LinkHandler} handler The handler callback function.
|
|
*/
|
|
Terminal.prototype.setHypertextLinkHandler = function(handler) {
|
|
if (!this.linkifier) {
|
|
throw new Error('Cannot attach a hypertext link handler before Terminal.open is called');
|
|
}
|
|
this.linkifier.setHypertextLinkHandler(handler);
|
|
// Refresh to force links to refresh
|
|
this.refresh(0, this.rows - 1);
|
|
}
|
|
|
|
/**
|
|
* Attaches a validation callback for hypertext links. This is useful to use
|
|
* validation logic or to do something with the link's element and url.
|
|
* @param {LinkMatcherValidationCallback} callback The callback to use, this can
|
|
* be cleared with null.
|
|
*/
|
|
Terminal.prototype.setHypertextValidationCallback = function(handler) {
|
|
if (!this.linkifier) {
|
|
throw new Error('Cannot attach a hypertext validation callback before Terminal.open is called');
|
|
}
|
|
this.linkifier.setHypertextValidationCallback(handler);
|
|
// Refresh to force links to refresh
|
|
this.refresh(0, this.rows - 1);
|
|
}
|
|
|
|
/**
|
|
* Registers a link matcher, allowing custom link patterns to be matched and
|
|
* handled.
|
|
* @param {RegExp} regex The regular expression to search for, specifically
|
|
* this searches the textContent of the rows. You will want to use \s to match
|
|
* a space ' ' character for example.
|
|
* @param {LinkHandler} handler The callback when the link is called.
|
|
* @param {LinkMatcherOptions} [options] Options for the link matcher.
|
|
* @return {number} The ID of the new matcher, this can be used to deregister.
|
|
*/
|
|
Terminal.prototype.registerLinkMatcher = function(regex, handler, options) {
|
|
if (this.linkifier) {
|
|
var matcherId = this.linkifier.registerLinkMatcher(regex, handler, options);
|
|
this.refresh(0, this.rows - 1);
|
|
return matcherId;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Deregisters a link matcher if it has been registered.
|
|
* @param {number} matcherId The link matcher's ID (returned after register)
|
|
*/
|
|
Terminal.prototype.deregisterLinkMatcher = function(matcherId) {
|
|
if (this.linkifier) {
|
|
if (this.linkifier.deregisterLinkMatcher(matcherId)) {
|
|
this.refresh(0, this.rows - 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle a keydown event
|
|
* Key Resources:
|
|
* - https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent
|
|
* @param {KeyboardEvent} ev The keydown event to be handled.
|
|
*/
|
|
Terminal.prototype.keyDown = function(ev) {
|
|
if (this.customKeydownHandler && this.customKeydownHandler(ev) === false) {
|
|
return false;
|
|
}
|
|
|
|
this.restartCursorBlinking();
|
|
|
|
if (!this.compositionHelper.keydown.bind(this.compositionHelper)(ev)) {
|
|
if (this.ybase !== this.ydisp) {
|
|
this.scrollToBottom();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
var self = this;
|
|
var result = this.evaluateKeyEscapeSequence(ev);
|
|
|
|
if (result.key === C0.DC3) { // XOFF
|
|
this.writeStopped = true;
|
|
} else if (result.key === C0.DC1) { // XON
|
|
this.writeStopped = false;
|
|
}
|
|
|
|
if (result.scrollDisp) {
|
|
this.scrollDisp(result.scrollDisp);
|
|
return this.cancel(ev, true);
|
|
}
|
|
|
|
if (isThirdLevelShift(this, ev)) {
|
|
return true;
|
|
}
|
|
|
|
if (result.cancel) {
|
|
// The event is canceled at the end already, is this necessary?
|
|
this.cancel(ev, true);
|
|
}
|
|
|
|
if (!result.key) {
|
|
return true;
|
|
}
|
|
|
|
this.emit('keydown', ev);
|
|
this.emit('key', result.key, ev);
|
|
this.showCursor();
|
|
this.handler(result.key);
|
|
|
|
return this.cancel(ev, true);
|
|
};
|
|
|
|
/**
|
|
* Returns an object that determines how a KeyboardEvent should be handled. The key of the
|
|
* returned value is the new key code to pass to the PTY.
|
|
*
|
|
* Reference: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
|
|
* @param {KeyboardEvent} ev The keyboard event to be translated to key escape sequence.
|
|
*/
|
|
Terminal.prototype.evaluateKeyEscapeSequence = function(ev) {
|
|
var result = {
|
|
// Whether to cancel event propogation (NOTE: this may not be needed since the event is
|
|
// canceled at the end of keyDown
|
|
cancel: false,
|
|
// The new key even to emit
|
|
key: undefined,
|
|
// The number of characters to scroll, if this is defined it will cancel the event
|
|
scrollDisp: undefined
|
|
};
|
|
var modifiers = ev.shiftKey << 0 | ev.altKey << 1 | ev.ctrlKey << 2 | ev.metaKey << 3;
|
|
switch (ev.keyCode) {
|
|
case 8:
|
|
// backspace
|
|
if (ev.shiftKey) {
|
|
result.key = C0.BS; // ^H
|
|
break;
|
|
}
|
|
result.key = C0.DEL; // ^?
|
|
break;
|
|
case 9:
|
|
// tab
|
|
if (ev.shiftKey) {
|
|
result.key = C0.ESC + '[Z';
|
|
break;
|
|
}
|
|
result.key = C0.HT;
|
|
result.cancel = true;
|
|
break;
|
|
case 13:
|
|
// return/enter
|
|
result.key = C0.CR;
|
|
result.cancel = true;
|
|
break;
|
|
case 27:
|
|
// escape
|
|
result.key = C0.ESC;
|
|
result.cancel = true;
|
|
break;
|
|
case 37:
|
|
// left-arrow
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'D';
|
|
// HACK: Make Alt + left-arrow behave like Ctrl + left-arrow: move one word backwards
|
|
// http://unix.stackexchange.com/a/108106
|
|
// macOS uses different escape sequences than linux
|
|
if (result.key == C0.ESC + '[1;3D') {
|
|
result.key = (this.browser.isMac) ? C0.ESC + 'b' : C0.ESC + '[1;5D';
|
|
}
|
|
} else if (this.applicationCursor) {
|
|
result.key = C0.ESC + 'OD';
|
|
} else {
|
|
result.key = C0.ESC + '[D';
|
|
}
|
|
break;
|
|
case 39:
|
|
// right-arrow
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'C';
|
|
// HACK: Make Alt + right-arrow behave like Ctrl + right-arrow: move one word forward
|
|
// http://unix.stackexchange.com/a/108106
|
|
// macOS uses different escape sequences than linux
|
|
if (result.key == C0.ESC + '[1;3C') {
|
|
result.key = (this.browser.isMac) ? C0.ESC + 'f' : C0.ESC + '[1;5C';
|
|
}
|
|
} else if (this.applicationCursor) {
|
|
result.key = C0.ESC + 'OC';
|
|
} else {
|
|
result.key = C0.ESC + '[C';
|
|
}
|
|
break;
|
|
case 38:
|
|
// up-arrow
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'A';
|
|
// HACK: Make Alt + up-arrow behave like Ctrl + up-arrow
|
|
// http://unix.stackexchange.com/a/108106
|
|
if (result.key == C0.ESC + '[1;3A') {
|
|
result.key = C0.ESC + '[1;5A';
|
|
}
|
|
} else if (this.applicationCursor) {
|
|
result.key = C0.ESC + 'OA';
|
|
} else {
|
|
result.key = C0.ESC + '[A';
|
|
}
|
|
break;
|
|
case 40:
|
|
// down-arrow
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'B';
|
|
// HACK: Make Alt + down-arrow behave like Ctrl + down-arrow
|
|
// http://unix.stackexchange.com/a/108106
|
|
if (result.key == C0.ESC + '[1;3B') {
|
|
result.key = C0.ESC + '[1;5B';
|
|
}
|
|
} else if (this.applicationCursor) {
|
|
result.key = C0.ESC + 'OB';
|
|
} else {
|
|
result.key = C0.ESC + '[B';
|
|
}
|
|
break;
|
|
case 45:
|
|
// insert
|
|
if (!ev.shiftKey && !ev.ctrlKey) {
|
|
// <Ctrl> or <Shift> + <Insert> are used to
|
|
// copy-paste on some systems.
|
|
result.key = C0.ESC + '[2~';
|
|
}
|
|
break;
|
|
case 46:
|
|
// delete
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[3;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[3~';
|
|
}
|
|
break;
|
|
case 36:
|
|
// home
|
|
if (modifiers)
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'H';
|
|
else if (this.applicationCursor)
|
|
result.key = C0.ESC + 'OH';
|
|
else
|
|
result.key = C0.ESC + '[H';
|
|
break;
|
|
case 35:
|
|
// end
|
|
if (modifiers)
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'F';
|
|
else if (this.applicationCursor)
|
|
result.key = C0.ESC + 'OF';
|
|
else
|
|
result.key = C0.ESC + '[F';
|
|
break;
|
|
case 33:
|
|
// page up
|
|
if (ev.shiftKey) {
|
|
result.scrollDisp = -(this.rows - 1);
|
|
} else {
|
|
result.key = C0.ESC + '[5~';
|
|
}
|
|
break;
|
|
case 34:
|
|
// page down
|
|
if (ev.shiftKey) {
|
|
result.scrollDisp = this.rows - 1;
|
|
} else {
|
|
result.key = C0.ESC + '[6~';
|
|
}
|
|
break;
|
|
case 112:
|
|
// F1-F12
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'P';
|
|
} else {
|
|
result.key = C0.ESC + 'OP';
|
|
}
|
|
break;
|
|
case 113:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'Q';
|
|
} else {
|
|
result.key = C0.ESC + 'OQ';
|
|
}
|
|
break;
|
|
case 114:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'R';
|
|
} else {
|
|
result.key = C0.ESC + 'OR';
|
|
}
|
|
break;
|
|
case 115:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[1;' + (modifiers + 1) + 'S';
|
|
} else {
|
|
result.key = C0.ESC + 'OS';
|
|
}
|
|
break;
|
|
case 116:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[15;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[15~';
|
|
}
|
|
break;
|
|
case 117:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[17;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[17~';
|
|
}
|
|
break;
|
|
case 118:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[18;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[18~';
|
|
}
|
|
break;
|
|
case 119:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[19;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[19~';
|
|
}
|
|
break;
|
|
case 120:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[20;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[20~';
|
|
}
|
|
break;
|
|
case 121:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[21;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[21~';
|
|
}
|
|
break;
|
|
case 122:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[23;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[23~';
|
|
}
|
|
break;
|
|
case 123:
|
|
if (modifiers) {
|
|
result.key = C0.ESC + '[24;' + (modifiers + 1) + '~';
|
|
} else {
|
|
result.key = C0.ESC + '[24~';
|
|
}
|
|
break;
|
|
default:
|
|
// a-z and space
|
|
if (ev.ctrlKey && !ev.shiftKey && !ev.altKey && !ev.metaKey) {
|
|
if (ev.keyCode >= 65 && ev.keyCode <= 90) {
|
|
result.key = String.fromCharCode(ev.keyCode - 64);
|
|
} else if (ev.keyCode === 32) {
|
|
// NUL
|
|
result.key = String.fromCharCode(0);
|
|
} else if (ev.keyCode >= 51 && ev.keyCode <= 55) {
|
|
// escape, file sep, group sep, record sep, unit sep
|
|
result.key = String.fromCharCode(ev.keyCode - 51 + 27);
|
|
} else if (ev.keyCode === 56) {
|
|
// delete
|
|
result.key = String.fromCharCode(127);
|
|
} else if (ev.keyCode === 219) {
|
|
// ^[ - Control Sequence Introducer (CSI)
|
|
result.key = String.fromCharCode(27);
|
|
} else if (ev.keyCode === 220) {
|
|
// ^\ - String Terminator (ST)
|
|
result.key = String.fromCharCode(28);
|
|
} else if (ev.keyCode === 221) {
|
|
// ^] - Operating System Command (OSC)
|
|
result.key = String.fromCharCode(29);
|
|
}
|
|
} else if (!this.browser.isMac && ev.altKey && !ev.ctrlKey && !ev.metaKey) {
|
|
// On Mac this is a third level shift. Use <Esc> instead.
|
|
if (ev.keyCode >= 65 && ev.keyCode <= 90) {
|
|
result.key = C0.ESC + String.fromCharCode(ev.keyCode + 32);
|
|
} else if (ev.keyCode === 192) {
|
|
result.key = C0.ESC + '`';
|
|
} else if (ev.keyCode >= 48 && ev.keyCode <= 57) {
|
|
result.key = C0.ESC + (ev.keyCode - 48);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Set the G level of the terminal
|
|
* @param g
|
|
*/
|
|
Terminal.prototype.setgLevel = function(g) {
|
|
this.glevel = g;
|
|
this.charset = this.charsets[g];
|
|
};
|
|
|
|
/**
|
|
* Set the charset for the given G level of the terminal
|
|
* @param g
|
|
* @param charset
|
|
*/
|
|
Terminal.prototype.setgCharset = function(g, charset) {
|
|
this.charsets[g] = charset;
|
|
if (this.glevel === g) {
|
|
this.charset = charset;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Handle a keypress event.
|
|
* Key Resources:
|
|
* - https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent
|
|
* @param {KeyboardEvent} ev The keypress event to be handled.
|
|
*/
|
|
Terminal.prototype.keyPress = function(ev) {
|
|
var key;
|
|
|
|
this.cancel(ev);
|
|
|
|
if (ev.charCode) {
|
|
key = ev.charCode;
|
|
} else if (ev.which == null) {
|
|
key = ev.keyCode;
|
|
} else if (ev.which !== 0 && ev.charCode !== 0) {
|
|
key = ev.which;
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
if (!key || (
|
|
(ev.altKey || ev.ctrlKey || ev.metaKey) && !isThirdLevelShift(this, ev)
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
key = String.fromCharCode(key);
|
|
|
|
this.emit('keypress', key, ev);
|
|
this.emit('key', key, ev);
|
|
this.showCursor();
|
|
this.handler(key);
|
|
|
|
return false;
|
|
};
|
|
|
|
/**
|
|
* Send data for handling to the terminal
|
|
* @param {string} data
|
|
*/
|
|
Terminal.prototype.send = function(data) {
|
|
var self = this;
|
|
|
|
if (!this.queue) {
|
|
setTimeout(function() {
|
|
self.handler(self.queue);
|
|
self.queue = '';
|
|
}, 1);
|
|
}
|
|
|
|
this.queue += data;
|
|
};
|
|
|
|
/**
|
|
* Ring the bell.
|
|
* Note: We could do sweet things with webaudio here
|
|
*/
|
|
Terminal.prototype.bell = function() {
|
|
if (!this.visualBell) return;
|
|
var self = this;
|
|
this.element.style.borderColor = 'white';
|
|
setTimeout(function() {
|
|
self.element.style.borderColor = '';
|
|
}, 10);
|
|
if (this.popOnBell) this.focus();
|
|
};
|
|
|
|
/**
|
|
* Log the current state to the console.
|
|
*/
|
|
Terminal.prototype.log = function() {
|
|
if (!this.debug) return;
|
|
if (!this.context.console || !this.context.console.log) return;
|
|
var args = Array.prototype.slice.call(arguments);
|
|
this.context.console.log.apply(this.context.console, args);
|
|
};
|
|
|
|
/**
|
|
* Log the current state as error to the console.
|
|
*/
|
|
Terminal.prototype.error = function() {
|
|
if (!this.debug) return;
|
|
if (!this.context.console || !this.context.console.error) return;
|
|
var args = Array.prototype.slice.call(arguments);
|
|
this.context.console.error.apply(this.context.console, args);
|
|
};
|
|
|
|
/**
|
|
* Resizes the terminal.
|
|
*
|
|
* @param {number} x The number of columns to resize to.
|
|
* @param {number} y The number of rows to resize to.
|
|
*/
|
|
Terminal.prototype.resize = function(x, y) {
|
|
if (isNaN(x) || isNaN(y)) {
|
|
return;
|
|
}
|
|
|
|
var line
|
|
, el
|
|
, i
|
|
, j
|
|
, ch
|
|
, addToY;
|
|
|
|
if (x === this.cols && y === this.rows) {
|
|
return;
|
|
}
|
|
|
|
if (x < 1) x = 1;
|
|
if (y < 1) y = 1;
|
|
|
|
// resize cols
|
|
j = this.cols;
|
|
if (j < x) {
|
|
ch = [this.defAttr, ' ', 1]; // does xterm use the default attr?
|
|
i = this.lines.length;
|
|
while (i--) {
|
|
while (this.lines.get(i).length < x) {
|
|
this.lines.get(i).push(ch);
|
|
}
|
|
}
|
|
}
|
|
|
|
this.cols = x;
|
|
this.setupStops(this.cols);
|
|
|
|
// resize rows
|
|
j = this.rows;
|
|
addToY = 0;
|
|
if (j < y) {
|
|
el = this.element;
|
|
while (j++ < y) {
|
|
// y is rows, not this.y
|
|
if (this.lines.length < y + this.ybase) {
|
|
if (this.ybase > 0 && this.lines.length <= this.ybase + this.y + addToY + 1) {
|
|
// There is room above the buffer and there are no empty elements below the line,
|
|
// scroll up
|
|
this.ybase--;
|
|
addToY++
|
|
if (this.ydisp > 0) {
|
|
// Viewport is at the top of the buffer, must increase downwards
|
|
this.ydisp--;
|
|
}
|
|
} else {
|
|
// Add a blank line if there is no buffer left at the top to scroll to, or if there
|
|
// are blank lines after the cursor
|
|
this.lines.push(this.blankLine());
|
|
}
|
|
}
|
|
if (this.children.length < y) {
|
|
this.insertRow();
|
|
}
|
|
}
|
|
} else { // (j > y)
|
|
while (j-- > y) {
|
|
if (this.lines.length > y + this.ybase) {
|
|
if (this.lines.length > this.ybase + this.y + 1) {
|
|
// The line is a blank line below the cursor, remove it
|
|
this.lines.pop();
|
|
} else {
|
|
// The line is the cursor, scroll down
|
|
this.ybase++;
|
|
this.ydisp++;
|
|
}
|
|
}
|
|
if (this.children.length > y) {
|
|
el = this.children.shift();
|
|
if (!el) continue;
|
|
el.parentNode.removeChild(el);
|
|
}
|
|
}
|
|
}
|
|
this.rows = y;
|
|
|
|
// Make sure that the cursor stays on screen
|
|
if (this.y >= y) {
|
|
this.y = y - 1;
|
|
}
|
|
if (addToY) {
|
|
this.y += addToY;
|
|
}
|
|
|
|
if (this.x >= x) {
|
|
this.x = x - 1;
|
|
}
|
|
|
|
this.scrollTop = 0;
|
|
this.scrollBottom = y - 1;
|
|
|
|
this.charMeasure.measure();
|
|
|
|
this.refresh(0, this.rows - 1);
|
|
|
|
this.normal = null;
|
|
|
|
this.geometry = [this.cols, this.rows];
|
|
this.emit('resize', {terminal: this, cols: x, rows: y});
|
|
};
|
|
|
|
/**
|
|
* Updates the range of rows to refresh
|
|
* @param {number} y The number of rows to refresh next.
|
|
*/
|
|
Terminal.prototype.updateRange = function(y) {
|
|
if (y < this.refreshStart) this.refreshStart = y;
|
|
if (y > this.refreshEnd) this.refreshEnd = y;
|
|
// if (y > this.refreshEnd) {
|
|
// this.refreshEnd = y;
|
|
// if (y > this.rows - 1) {
|
|
// this.refreshEnd = this.rows - 1;
|
|
// }
|
|
// }
|
|
};
|
|
|
|
/**
|
|
* Set the range of refreshing to the maximum value
|
|
*/
|
|
Terminal.prototype.maxRange = function() {
|
|
this.refreshStart = 0;
|
|
this.refreshEnd = this.rows - 1;
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
* Setup the tab stops.
|
|
* @param {number} i
|
|
*/
|
|
Terminal.prototype.setupStops = function(i) {
|
|
if (i != null) {
|
|
if (!this.tabs[i]) {
|
|
i = this.prevStop(i);
|
|
}
|
|
} else {
|
|
this.tabs = {};
|
|
i = 0;
|
|
}
|
|
|
|
for (; i < this.cols; i += this.getOption('tabStopWidth')) {
|
|
this.tabs[i] = true;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Move the cursor to the previous tab stop from the given position (default is current).
|
|
* @param {number} x The position to move the cursor to the previous tab stop.
|
|
*/
|
|
Terminal.prototype.prevStop = function(x) {
|
|
if (x == null) x = this.x;
|
|
while (!this.tabs[--x] && x > 0);
|
|
return x >= this.cols
|
|
? this.cols - 1
|
|
: x < 0 ? 0 : x;
|
|
};
|
|
|
|
|
|
/**
|
|
* Move the cursor one tab stop forward from the given position (default is current).
|
|
* @param {number} x The position to move the cursor one tab stop forward.
|
|
*/
|
|
Terminal.prototype.nextStop = function(x) {
|
|
if (x == null) x = this.x;
|
|
while (!this.tabs[++x] && x < this.cols);
|
|
return x >= this.cols
|
|
? this.cols - 1
|
|
: x < 0 ? 0 : x;
|
|
};
|
|
|
|
|
|
/**
|
|
* Erase in the identified line everything from "x" to the end of the line (right).
|
|
* @param {number} x The column from which to start erasing to the end of the line.
|
|
* @param {number} y The line in which to operate.
|
|
*/
|
|
Terminal.prototype.eraseRight = function(x, y) {
|
|
var line = this.lines.get(this.ybase + y);
|
|
if (!line) {
|
|
return;
|
|
}
|
|
var ch = [this.eraseAttr(), ' ', 1]; // xterm
|
|
for (; x < this.cols; x++) {
|
|
line[x] = ch;
|
|
}
|
|
this.updateRange(y);
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
* Erase in the identified line everything from "x" to the start of the line (left).
|
|
* @param {number} x The column from which to start erasing to the start of the line.
|
|
* @param {number} y The line in which to operate.
|
|
*/
|
|
Terminal.prototype.eraseLeft = function(x, y) {
|
|
var line = this.lines.get(this.ybase + y);
|
|
if (!line) {
|
|
return;
|
|
}
|
|
var ch = [this.eraseAttr(), ' ', 1]; // xterm
|
|
x++;
|
|
while (x--) {
|
|
line[x] = ch;
|
|
}
|
|
this.updateRange(y);
|
|
};
|
|
|
|
/**
|
|
* Clears the entire buffer, making the prompt line the new first line.
|
|
*/
|
|
Terminal.prototype.clear = function() {
|
|
if (this.ybase === 0 && this.y === 0) {
|
|
// Don't clear if it's already clear
|
|
return;
|
|
}
|
|
this.lines.set(0, this.lines.get(this.ybase + this.y));
|
|
this.lines.length = 1;
|
|
this.ydisp = 0;
|
|
this.ybase = 0;
|
|
this.y = 0;
|
|
for (var i = 1; i < this.rows; i++) {
|
|
this.lines.push(this.blankLine());
|
|
}
|
|
this.refresh(0, this.rows - 1);
|
|
this.emit('scroll', this.ydisp);
|
|
};
|
|
|
|
/**
|
|
* Erase all content in the given line
|
|
* @param {number} y The line to erase all of its contents.
|
|
*/
|
|
Terminal.prototype.eraseLine = function(y) {
|
|
this.eraseRight(0, y);
|
|
};
|
|
|
|
|
|
/**
|
|
* Return the data array of a blank line
|
|
* @param {number} cur First bunch of data for each "blank" character.
|
|
*/
|
|
Terminal.prototype.blankLine = function(cur) {
|
|
var attr = cur
|
|
? this.eraseAttr()
|
|
: this.defAttr;
|
|
|
|
var ch = [attr, ' ', 1] // width defaults to 1 halfwidth character
|
|
, line = []
|
|
, i = 0;
|
|
|
|
for (; i < this.cols; i++) {
|
|
line[i] = ch;
|
|
}
|
|
|
|
return line;
|
|
};
|
|
|
|
|
|
/**
|
|
* If cur return the back color xterm feature attribute. Else return defAttr.
|
|
* @param {object} cur
|
|
*/
|
|
Terminal.prototype.ch = function(cur) {
|
|
return cur
|
|
? [this.eraseAttr(), ' ', 1]
|
|
: [this.defAttr, ' ', 1];
|
|
};
|
|
|
|
|
|
/**
|
|
* Evaluate if the current erminal is the given argument.
|
|
* @param {object} term The terminal to evaluate
|
|
*/
|
|
Terminal.prototype.is = function(term) {
|
|
var name = this.termName;
|
|
return (name + '').indexOf(term) === 0;
|
|
};
|
|
|
|
|
|
/**
|
|
* Emit the 'data' event and populate the given data.
|
|
* @param {string} data The data to populate in the event.
|
|
*/
|
|
Terminal.prototype.handler = function(data) {
|
|
// Prevents all events to pty process if stdin is disabled
|
|
if (this.options.disableStdin) {
|
|
return;
|
|
}
|
|
|
|
// Input is being sent to the terminal, the terminal should focus the prompt.
|
|
if (this.ybase !== this.ydisp) {
|
|
this.scrollToBottom();
|
|
}
|
|
this.emit('data', data);
|
|
};
|
|
|
|
|
|
/**
|
|
* Emit the 'title' event and populate the given title.
|
|
* @param {string} title The title to populate in the event.
|
|
*/
|
|
Terminal.prototype.handleTitle = function(title) {
|
|
/**
|
|
* This event is emitted when the title of the terminal is changed
|
|
* from inside the terminal. The parameter is the new title.
|
|
*
|
|
* @event title
|
|
*/
|
|
this.emit('title', title);
|
|
};
|
|
|
|
|
|
/**
|
|
* ESC
|
|
*/
|
|
|
|
/**
|
|
* ESC D Index (IND is 0x84).
|
|
*/
|
|
Terminal.prototype.index = function() {
|
|
this.y++;
|
|
if (this.y > this.scrollBottom) {
|
|
this.y--;
|
|
this.scroll();
|
|
}
|
|
// If the end of the line is hit, prevent this action from wrapping around to the next line.
|
|
if (this.x >= this.cols) {
|
|
this.x--;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* ESC M Reverse Index (RI is 0x8d).
|
|
*
|
|
* Move the cursor up one row, inserting a new blank line if necessary.
|
|
*/
|
|
Terminal.prototype.reverseIndex = function() {
|
|
var j;
|
|
if (this.y === this.scrollTop) {
|
|
// possibly move the code below to term.reverseScroll();
|
|
// test: echo -ne '\e[1;1H\e[44m\eM\e[0m'
|
|
// blankLine(true) is xterm/linux behavior
|
|
this.lines.shiftElements(this.y + this.ybase, this.rows - 1, 1);
|
|
this.lines.set(this.y + this.ybase, this.blankLine(true));
|
|
this.updateRange(this.scrollTop);
|
|
this.updateRange(this.scrollBottom);
|
|
} else {
|
|
this.y--;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* ESC c Full Reset (RIS).
|
|
*/
|
|
Terminal.prototype.reset = function() {
|
|
this.options.rows = this.rows;
|
|
this.options.cols = this.cols;
|
|
var customKeydownHandler = this.customKeydownHandler;
|
|
var cursorBlinkInterval = this.cursorBlinkInterval;
|
|
Terminal.call(this, this.options);
|
|
this.customKeydownHandler = customKeydownHandler;
|
|
this.cursorBlinkInterval = cursorBlinkInterval;
|
|
this.refresh(0, this.rows - 1);
|
|
this.viewport.syncScrollArea();
|
|
};
|
|
|
|
|
|
/**
|
|
* ESC H Tab Set (HTS is 0x88).
|
|
*/
|
|
Terminal.prototype.tabSet = function() {
|
|
this.tabs[this.x] = true;
|
|
};
|
|
|
|
/**
|
|
* Helpers
|
|
*/
|
|
|
|
function on(el, type, handler, capture) {
|
|
if (!Array.isArray(el)) {
|
|
el = [el];
|
|
}
|
|
el.forEach(function (element) {
|
|
element.addEventListener(type, handler, capture || false);
|
|
});
|
|
}
|
|
|
|
function off(el, type, handler, capture) {
|
|
el.removeEventListener(type, handler, capture || false);
|
|
}
|
|
|
|
function cancel(ev, force) {
|
|
if (!this.cancelEvents && !force) {
|
|
return;
|
|
}
|
|
ev.preventDefault();
|
|
ev.stopPropagation();
|
|
return false;
|
|
}
|
|
|
|
function inherits(child, parent) {
|
|
function f() {
|
|
this.constructor = child;
|
|
}
|
|
f.prototype = parent.prototype;
|
|
child.prototype = new f;
|
|
}
|
|
|
|
function indexOf(obj, el) {
|
|
var i = obj.length;
|
|
while (i--) {
|
|
if (obj[i] === el) return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
function isThirdLevelShift(term, ev) {
|
|
var thirdLevelKey =
|
|
(term.browser.isMac && ev.altKey && !ev.ctrlKey && !ev.metaKey) ||
|
|
(term.browser.isMSWindows && ev.altKey && ev.ctrlKey && !ev.metaKey);
|
|
|
|
if (ev.type == 'keypress') {
|
|
return thirdLevelKey;
|
|
}
|
|
|
|
// Don't invoke for arrows, pageDown, home, backspace, etc. (on non-keypress events)
|
|
return thirdLevelKey && (!ev.keyCode || ev.keyCode > 47);
|
|
}
|
|
|
|
// Expose to InputHandler (temporary)
|
|
Terminal.prototype.matchColor = matchColor;
|
|
|
|
function matchColor(r1, g1, b1) {
|
|
var hash = (r1 << 16) | (g1 << 8) | b1;
|
|
|
|
if (matchColor._cache[hash] != null) {
|
|
return matchColor._cache[hash];
|
|
}
|
|
|
|
var ldiff = Infinity
|
|
, li = -1
|
|
, i = 0
|
|
, c
|
|
, r2
|
|
, g2
|
|
, b2
|
|
, diff;
|
|
|
|
for (; i < Terminal.vcolors.length; i++) {
|
|
c = Terminal.vcolors[i];
|
|
r2 = c[0];
|
|
g2 = c[1];
|
|
b2 = c[2];
|
|
|
|
diff = matchColor.distance(r1, g1, b1, r2, g2, b2);
|
|
|
|
if (diff === 0) {
|
|
li = i;
|
|
break;
|
|
}
|
|
|
|
if (diff < ldiff) {
|
|
ldiff = diff;
|
|
li = i;
|
|
}
|
|
}
|
|
|
|
return matchColor._cache[hash] = li;
|
|
}
|
|
|
|
matchColor._cache = {};
|
|
|
|
// http://stackoverflow.com/questions/1633828
|
|
matchColor.distance = function(r1, g1, b1, r2, g2, b2) {
|
|
return Math.pow(30 * (r1 - r2), 2)
|
|
+ Math.pow(59 * (g1 - g2), 2)
|
|
+ Math.pow(11 * (b1 - b2), 2);
|
|
};
|
|
|
|
function each(obj, iter, con) {
|
|
if (obj.forEach) return obj.forEach(iter, con);
|
|
for (var i = 0; i < obj.length; i++) {
|
|
iter.call(con, obj[i], i, obj);
|
|
}
|
|
}
|
|
|
|
function wasMondifierKeyOnlyEvent(ev) {
|
|
return ev.keyCode === 16 || // Shift
|
|
ev.keyCode === 17 || // Ctrl
|
|
ev.keyCode === 18; // Alt
|
|
}
|
|
|
|
function keys(obj) {
|
|
if (Object.keys) return Object.keys(obj);
|
|
var key, keys = [];
|
|
for (key in obj) {
|
|
if (Object.prototype.hasOwnProperty.call(obj, key)) {
|
|
keys.push(key);
|
|
}
|
|
}
|
|
return keys;
|
|
}
|
|
|
|
/**
|
|
* Expose
|
|
*/
|
|
|
|
Terminal.EventEmitter = EventEmitter;
|
|
Terminal.inherits = inherits;
|
|
|
|
/**
|
|
* Adds an event listener to the terminal.
|
|
*
|
|
* @param {string} event The name of the event. TODO: Document all event types
|
|
* @param {function} callback The function to call when the event is triggered.
|
|
*/
|
|
Terminal.on = on;
|
|
Terminal.off = off;
|
|
Terminal.cancel = cancel;
|
|
|
|
module.exports = Terminal;
|