126 lines
3 KiB
JavaScript
126 lines
3 KiB
JavaScript
import { throttle } from 'lodash';
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import $ from 'jquery';
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import { Terminal } from 'xterm';
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import * as fit from 'xterm/lib/addons/fit/fit';
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import * as webLinks from 'xterm/lib/addons/webLinks/webLinks';
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import { canScrollUp, canScrollDown } from '~/lib/utils/dom_utils';
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import { __ } from '~/locale';
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const SCROLL_MARGIN = 5;
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Terminal.applyAddon(fit);
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Terminal.applyAddon(webLinks);
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export default class GLTerminal {
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constructor(element, options = {}) {
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this.options = {
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cursorBlink: true,
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screenKeys: true,
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...options,
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};
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this.container = element;
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this.onDispose = [];
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this.setSocketUrl();
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this.createTerminal();
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$(window)
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.off('resize.terminal')
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.on('resize.terminal', () => {
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this.terminal.fit();
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});
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}
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setSocketUrl() {
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const { protocol, hostname, port } = window.location;
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const wsProtocol = protocol === 'https:' ? 'wss://' : 'ws://';
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const path = this.container.dataset.projectPath;
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this.socketUrl = `${wsProtocol}${hostname}:${port}${path}`;
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}
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createTerminal() {
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this.terminal = new Terminal(this.options);
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this.socket = new WebSocket(this.socketUrl, ['terminal.gitlab.com']);
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this.socket.binaryType = 'arraybuffer';
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this.terminal.open(this.container);
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this.terminal.fit();
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this.terminal.webLinksInit();
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this.terminal.focus();
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this.socket.onopen = () => {
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this.runTerminal();
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};
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this.socket.onerror = () => {
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this.handleSocketFailure();
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};
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}
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runTerminal() {
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const decoder = new TextDecoder('utf-8');
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const encoder = new TextEncoder('utf-8');
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this.terminal.on('data', data => {
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this.socket.send(encoder.encode(data));
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});
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this.socket.addEventListener('message', ev => {
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this.terminal.write(decoder.decode(ev.data));
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});
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this.isTerminalInitialized = true;
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this.terminal.fit();
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}
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handleSocketFailure() {
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this.terminal.write('\r\n');
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this.terminal.write(__('Connection failure'));
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}
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addScrollListener(onScrollLimit) {
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const viewport = this.container.querySelector('.xterm-viewport');
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const listener = throttle(() => {
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onScrollLimit({
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canScrollUp: canScrollUp(viewport, SCROLL_MARGIN),
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canScrollDown: canScrollDown(viewport, SCROLL_MARGIN),
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});
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});
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this.onDispose.push(() => viewport.removeEventListener('scroll', listener));
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viewport.addEventListener('scroll', listener);
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// don't forget to initialize value before scroll!
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listener({ target: viewport });
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}
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disable() {
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this.terminal.setOption('cursorBlink', false);
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this.terminal.setOption('theme', { foreground: '#707070' });
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this.terminal.setOption('disableStdin', true);
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this.socket.close();
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}
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dispose() {
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this.terminal.off('data');
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this.terminal.dispose();
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this.socket.close();
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this.onDispose.forEach(fn => fn());
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this.onDispose.length = 0;
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}
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scrollToTop() {
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this.terminal.scrollToTop();
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}
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scrollToBottom() {
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this.terminal.scrollToBottom();
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}
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fit() {
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this.terminal.fit();
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}
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}
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