dees-catalog/ts_web/elements/dees-terminal.ts
2024-02-05 13:13:02 +01:00

321 lines
8.2 KiB
TypeScript

import {
DeesElement,
property,
html,
customElement,
type TemplateResult,
css,
cssManager,
} from '@design.estate/dees-element';
import * as domtools from '@design.estate/dees-domtools';
import * as webcontainer from '@webcontainer/api';
import { Terminal } from 'xterm';
import { FitAddon } from 'xterm-addon-fit';
declare global {
interface HTMLElementTagNameMap {
'dees-terminal': DeesTerminal;
}
}
@customElement('dees-terminal')
export class DeesTerminal extends DeesElement {
public static demo = () => html` <dees-terminal></dees-terminal> `;
// INSTANCE
private resizeObserver: ResizeObserver;
@property()
public setupCommand = `pnpm install @git.zone/tsbuild && clear && echo 'welcome'`;
constructor() {
super();
this.resizeObserver = new ResizeObserver((entries) => {
for (const entry of entries) {
// Handle the resize event
console.log(`Terminal Resized`);
this.handleResize();
}
});
}
public static styles = [
cssManager.defaultStyles,
css`
:host {
padding: 20px;
background: #000;
position: absolute;
height: 100%;
width: 100%;
}
* {
box-sizing: border-box;
}
#container {
position: absolute;
height: calc(100% - 40px);
width: calc(100% - 40px);
}
/**
* Copyright (c) 2014 The xterm.js authors. All rights reserved.
* Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
* https://github.com/chjj/term.js
* @license MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* Originally forked from (with the author's permission):
* Fabrice Bellard's javascript vt100 for jslinux:
* http://bellard.org/jslinux/
* Copyright (c) 2011 Fabrice Bellard
* The original design remains. The terminal itself
* has been extended to include xterm CSI codes, among
* other features.
*/
/**
* Default styles for xterm.js
*/
.xterm {
font-feature-settings: 'liga' 0;
position: relative;
user-select: none;
-ms-user-select: none;
-webkit-user-select: none;
}
.xterm.focus,
.xterm:focus {
outline: none;
}
.xterm .xterm-helpers {
position: absolute;
top: 0;
/**
* The z-index of the helpers must be higher than the canvases in order for
* IMEs to appear on top.
*/
z-index: 5;
}
.xterm .xterm-helper-textarea {
padding: 0;
border: 0;
margin: 0;
/* Move textarea out of the screen to the far left, so that the cursor is not visible */
position: absolute;
opacity: 0;
left: -9999em;
top: 0;
width: 0;
height: 0;
z-index: -5;
/** Prevent wrapping so the IME appears against the textarea at the correct position */
white-space: nowrap;
overflow: hidden;
resize: none;
}
.xterm .composition-view {
/* TODO: Composition position got messed up somewhere */
background: #000;
color: #fff;
display: none;
position: absolute;
white-space: nowrap;
z-index: 1;
}
.xterm .composition-view.active {
display: block;
}
.xterm .xterm-viewport {
/* On OS X this is required in order for the scroll bar to appear fully opaque */
background-color: #000;
overflow-y: scroll;
cursor: default;
position: absolute;
right: 0;
left: 0;
top: 0;
bottom: 0;
}
.xterm .xterm-screen {
position: relative;
}
.xterm .xterm-screen canvas {
position: absolute;
left: 0;
top: 0;
}
.xterm .xterm-scroll-area {
visibility: hidden;
}
.xterm-char-measure-element {
display: inline-block;
visibility: hidden;
position: absolute;
top: 0;
left: -9999em;
line-height: normal;
}
.xterm {
cursor: text;
}
.xterm.enable-mouse-events {
/* When mouse events are enabled (eg. tmux), revert to the standard pointer cursor */
cursor: default;
}
.xterm.xterm-cursor-pointer {
cursor: pointer;
}
.xterm.column-select.focus {
/* Column selection mode */
cursor: crosshair;
}
.xterm .xterm-accessibility,
.xterm .xterm-message {
position: absolute;
left: 0;
top: 0;
bottom: 0;
right: 0;
z-index: 10;
color: transparent;
}
.xterm .live-region {
position: absolute;
left: -9999px;
width: 1px;
height: 1px;
overflow: hidden;
}
.xterm-dim {
opacity: 0.5;
}
.xterm-underline {
text-decoration: underline;
}
`,
];
public render(): TemplateResult {
return html`
<div class="mainbox">
<div id="container"></div>
</div>
`;
}
private fitAddon: FitAddon;
public async firstUpdated(
_changedProperties: Map<string | number | symbol, unknown>
): Promise<void> {
const domtools = await this.domtoolsPromise;
super.firstUpdated(_changedProperties);
const container = this.shadowRoot.getElementById('container');
const term = new Terminal({
convertEol: true,
cursorBlink: true,
});
this.fitAddon = new FitAddon();
term.loadAddon(this.fitAddon);
// Open the terminal in #terminal-container
term.open(container);
// Make the terminal's size and geometry fit the size of #terminal-container
this.fitAddon.fit();
term.write(`dees-terminal custom terminal. \r\n$ `);
// lets start the webcontainer
// Call only once
const webcontainerInstance = await webcontainer.WebContainer.boot();
const shellProcess = await webcontainerInstance.spawn('jsh');
shellProcess.output.pipeTo(
new WritableStream({
write(data) {
term.write(data);
},
})
);
const input = shellProcess.input.getWriter();
term.onData((data) => {
input.write(data);
});
await this.waitForPrompt(term, '~/');
input.write(this.setupCommand);
input.write(`\n`);
}
async connectedCallback(): Promise<void> {
await super.connectedCallback();
this.resizeObserver.observe(this);
}
async disconnectedCallback(): Promise<void> {
this.resizeObserver.unobserve(this);
await super.disconnectedCallback();
}
handleResize() {
this.fitAddon.fit();
}
private async waitForPrompt(term: Terminal, prompt: string): Promise<void> {
return new Promise<void>((resolve) => {
const checkPrompt = () => {
const lines = term.buffer.active;
for (let i = 0; i < lines.length; i++) {
const line = lines.getLine(i);
if (line && line.translateToString().includes(prompt)) {
resolve();
return;
}
}
setTimeout(checkPrompt, 100); // check every 100 ms
};
checkPrompt();
});
}
}