Svelte: Extract a shared component in preparation for supporting multiple images
This commit is contained in:
Alessandro Pignotti
parent
0a9a044b27
commit
e2589d8179
2 changed files with 182 additions and 175 deletions
179
src/lib/WebVM.svelte
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179
src/lib/WebVM.svelte
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<script>
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import { onMount } from 'svelte';
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import { Terminal } from '@xterm/xterm';
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import { FitAddon } from '@xterm/addon-fit';
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import { WebLinksAddon } from '@xterm/addon-web-links';
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import Nav from 'labs/packages/global-navbar/src/Nav.svelte';
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import SideBar from '$lib/SideBar.svelte';
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import * as CheerpX from '@leaningtech/cheerpx';
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import '$lib/global.css';
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import '@xterm/xterm/css/xterm.css'
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import '@fortawesome/fontawesome-free/css/all.min.css'
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import { networkInterface, startLogin } from '$lib/network.js'
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import { cpuActivity, diskActivity } from '$lib/activities.js'
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import { introMessage, errorMessage } from '$lib/messages.js'
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export let diskImageUrl = null;
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export let diskImageType = null;
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var term = new Terminal({cursorBlink:true, convertEol:true, fontFamily:"monospace", fontWeight: 400, fontWeightBold: 700});
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var cx = null;
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var fitAddon = new FitAddon();
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term.loadAddon(fitAddon);
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var linkAddon = new WebLinksAddon();
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term.loadAddon(linkAddon);
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var cxReadFunc = null;
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function writeData(buf)
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{
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term.write(new Uint8Array(buf));
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}
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function readData(str)
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{
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if(cxReadFunc == null)
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return;
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for(var i=0;i<str.length;i++)
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cxReadFunc(str.charCodeAt(i));
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}
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function printMessage(msg)
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{
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for(var i=0;i<msg.length;i++)
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term.write(msg[i] + "\n");
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}
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function hddCallback(state)
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{
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diskActivity.set(state != "ready");
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}
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function cpuCallback(state)
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{
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cpuActivity.set(state != "ready");
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}
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term.onData(readData);
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function initTerminal()
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{
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const consoleDiv = document.getElementById("console");
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term.open(consoleDiv);
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term.scrollToTop();
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fitAddon.fit();
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window.addEventListener("resize", function(ev){ fitAddon.fit(); });
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term.focus();
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// Avoid undesired default DnD handling
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function preventDefaults (e) {
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e.preventDefault()
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e.stopPropagation()
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}
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consoleDiv.addEventListener("dragover", preventDefaults, false);
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consoleDiv.addEventListener("dragenter", preventDefaults, false);
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consoleDiv.addEventListener("dragleave", preventDefaults, false);
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consoleDiv.addEventListener("drop", preventDefaults, false);
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printMessage(introMessage);
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initCheerpX();
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}
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async function initCheerpX()
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{
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// TODO: Check for SAB support
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var blockDevice = null;
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switch(diskImageType)
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{
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case "cloud":
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try
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{
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blockDevice = await CheerpX.CloudDevice.create(diskImageUrl);
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}
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catch(e)
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{
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// Report the failure and try again with plain HTTP
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var wssProtocol = "wss:";
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if(diskImageUrl.startsWith(wssProtocol))
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{
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// WebSocket protocol failed, try agin using plain HTTP
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plausible("WS Disk failure");
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blockDevice = await CheerpX.CloudDevice.create("https:" + diskImageUrl.substr(wssProtocol.length));
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}
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else
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{
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// No other recovery option
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throw e;
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}
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}
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break;
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case "bytes":
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blockDevice = await CheerpX.HttpBytesDevice.create(diskImageUrl);
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break;
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case "github":
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blockDevice = await CheerpX.GitHubDevice.create(diskImageUrl);
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break;
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default:
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throw new Error("Unrecognized device type");
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}
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var overlayDevice = await CheerpX.OverlayDevice.create(blockDevice, await CheerpX.IDBDevice.create("block1"));
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var webDevice = await CheerpX.WebDevice.create("");
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var dataDevice = await CheerpX.DataDevice.create();
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var mountPoints = [
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// The root filesystem, as an Ext2 image
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{type:"ext2", dev:overlayDevice, path:"/"},
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// Access to files on the Web server, relative to the current page
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{type:"dir", dev:webDevice, path:"/web"},
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// Access to read-only data coming from JavaScript
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{type:"dir", dev:dataDevice, path:"/data"},
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// Automatically created device files
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{type:"devs", path:"/dev"},
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// The Linux 'proc' filesystem which provides information about running processes
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{type:"proc", path:"/proc"}
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];
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try
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{
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cx = await CheerpX.Linux.create({mounts: mountPoints, networkInterface: networkInterface});
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}
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catch(e)
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{
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printMessage(errorMessage);
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printMessage([e.toString()]);
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return;
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}
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cx.registerCallback("cpuActivity", cpuCallback);
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cx.registerCallback("diskActivity", hddCallback);
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term.scrollToBottom();
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cxReadFunc = cx.setCustomConsole(writeData, term.cols, term.rows);
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// Reasonable defaults for local deployments
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// var cmd = "/bin/bash";
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// var args = ["--login"];
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// var env = ["HOME=/home/user", "TERM=xterm", "USER=user", "SHELL=/bin/bash", "EDITOR=vim", "LANG=en_US.UTF-8", "LC_ALL=C"];
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// var cwd = "/home/user";
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// Executable full path (Required)
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var cmd = "/bin/bash";
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// Arguments, as an array (Required)
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var args = ["--login"]
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// Optional extra parameters
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var opts = {
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// Environment variables
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env: ["HOME=/home/user", "TERM=xterm", "USER=user", "SHELL=/bin/bash", "EDITOR=vim", "LANG=en_US.UTF-8", "LC_ALL=C"],
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// Current working directory
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cwd: "/home/user",
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// User id
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uid: 1000,
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// Group id
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gid: 1000
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};
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// Run the command in a loop, in case the user exits
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while (true)
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{
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await cx.run(cmd, args, opts);
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}
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}
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onMount(initTerminal);
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async function handleConnect()
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{
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const w = window.open("login.html", "_blank");
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await cx.networkLogin();
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w.location.href = await startLogin();
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}
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</script>
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<main class="relative w-full h-full">
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<Nav />
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<div class="absolute top-10 bottom-0 left-0 right-0">
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<SideBar on:connect={handleConnect}/>
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<div class="absolute top-0 bottom-0 left-14 right-0 p-1 scrollbar" id="console">
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</div>
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</div>
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</main>
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@ -1,178 +1,6 @@
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<script>
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import { onMount } from 'svelte';
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import { Terminal } from '@xterm/xterm';
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import { FitAddon } from '@xterm/addon-fit';
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import { WebLinksAddon } from '@xterm/addon-web-links';
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import Nav from 'labs/packages/global-navbar/src/Nav.svelte';
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import SideBar from '$lib/SideBar.svelte';
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import * as CheerpX from '@leaningtech/cheerpx';
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import WebVM from '$lib/WebVM.svelte';
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import { diskImageUrl, diskImageType } from 'diskConfig'
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import '$lib/global.css';
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import '@xterm/xterm/css/xterm.css'
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import '@fortawesome/fontawesome-free/css/all.min.css'
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import { networkInterface, startLogin } from '$lib/network.js'
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import { cpuActivity, diskActivity } from '$lib/activities.js'
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import { introMessage, errorMessage } from '$lib/messages.js'
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var term = new Terminal({cursorBlink:true, convertEol:true, fontFamily:"monospace", fontWeight: 400, fontWeightBold: 700});
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var cx = null;
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var fitAddon = new FitAddon();
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term.loadAddon(fitAddon);
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var linkAddon = new WebLinksAddon();
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term.loadAddon(linkAddon);
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var cxReadFunc = null;
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function writeData(buf)
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{
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term.write(new Uint8Array(buf));
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}
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function readData(str)
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{
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if(cxReadFunc == null)
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return;
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for(var i=0;i<str.length;i++)
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cxReadFunc(str.charCodeAt(i));
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}
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function printMessage(msg)
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{
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for(var i=0;i<msg.length;i++)
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term.write(msg[i] + "\n");
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}
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function hddCallback(state)
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{
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diskActivity.set(state != "ready");
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}
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function cpuCallback(state)
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{
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cpuActivity.set(state != "ready");
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}
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term.onData(readData);
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function initTerminal()
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{
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const consoleDiv = document.getElementById("console");
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term.open(consoleDiv);
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term.scrollToTop();
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fitAddon.fit();
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window.addEventListener("resize", function(ev){ fitAddon.fit(); });
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term.focus();
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// Avoid undesired default DnD handling
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function preventDefaults (e) {
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e.preventDefault()
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e.stopPropagation()
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}
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consoleDiv.addEventListener("dragover", preventDefaults, false);
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consoleDiv.addEventListener("dragenter", preventDefaults, false);
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consoleDiv.addEventListener("dragleave", preventDefaults, false);
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consoleDiv.addEventListener("drop", preventDefaults, false);
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printMessage(introMessage);
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initCheerpX();
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}
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async function initCheerpX()
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{
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// TODO: Check for SAB support
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var blockDevice = null;
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switch(diskImageType)
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{
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case "cloud":
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try
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{
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blockDevice = await CheerpX.CloudDevice.create(diskImageUrl);
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}
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catch(e)
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{
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// Report the failure and try again with plain HTTP
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var wssProtocol = "wss:";
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if(diskImageUrl.startsWith(wssProtocol))
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{
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// WebSocket protocol failed, try agin using plain HTTP
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plausible("WS Disk failure");
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blockDevice = await CheerpX.CloudDevice.create("https:" + diskImageUrl.substr(wssProtocol.length));
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}
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else
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{
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// No other recovery option
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throw e;
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}
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}
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break;
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case "bytes":
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blockDevice = await CheerpX.HttpBytesDevice.create(diskImageUrl);
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break;
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case "github":
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blockDevice = await CheerpX.GitHubDevice.create(diskImageUrl);
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break;
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default:
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throw new Error("Unrecognized device type");
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}
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var overlayDevice = await CheerpX.OverlayDevice.create(blockDevice, await CheerpX.IDBDevice.create("block1"));
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var webDevice = await CheerpX.WebDevice.create("");
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var dataDevice = await CheerpX.DataDevice.create();
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var mountPoints = [
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// The root filesystem, as an Ext2 image
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{type:"ext2", dev:overlayDevice, path:"/"},
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// Access to files on the Web server, relative to the current page
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{type:"dir", dev:webDevice, path:"/web"},
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// Access to read-only data coming from JavaScript
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{type:"dir", dev:dataDevice, path:"/data"},
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// Automatically created device files
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{type:"devs", path:"/dev"},
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// The Linux 'proc' filesystem which provides information about running processes
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{type:"proc", path:"/proc"}
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];
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try
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{
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cx = await CheerpX.Linux.create({mounts: mountPoints, networkInterface: networkInterface});
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}
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catch(e)
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{
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printMessage(errorMessage);
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printMessage([e.toString()]);
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return;
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}
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cx.registerCallback("cpuActivity", cpuCallback);
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cx.registerCallback("diskActivity", hddCallback);
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term.scrollToBottom();
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cxReadFunc = cx.setCustomConsole(writeData, term.cols, term.rows);
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// Reasonable defaults for local deployments
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// var cmd = "/bin/bash";
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// var args = ["--login"];
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// var env = ["HOME=/home/user", "TERM=xterm", "USER=user", "SHELL=/bin/bash", "EDITOR=vim", "LANG=en_US.UTF-8", "LC_ALL=C"];
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// var cwd = "/home/user";
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// Executable full path (Required)
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var cmd = "/bin/bash";
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// Arguments, as an array (Required)
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var args = ["--login"]
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// Optional extra parameters
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var opts = {
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// Environment variables
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env: ["HOME=/home/user", "TERM=xterm", "USER=user", "SHELL=/bin/bash", "EDITOR=vim", "LANG=en_US.UTF-8", "LC_ALL=C"],
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// Current working directory
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cwd: "/home/user",
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// User id
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uid: 1000,
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// Group id
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gid: 1000
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};
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// Run the command in a loop, in case the user exits
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while (true)
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{
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await cx.run(cmd, args, opts);
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}
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}
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onMount(initTerminal);
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async function handleConnect()
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{
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const w = window.open("login.html", "_blank");
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await cx.networkLogin();
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w.location.href = await startLogin();
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}
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</script>
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<main class="relative w-full h-full">
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<Nav />
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<div class="absolute top-10 bottom-0 left-0 right-0">
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<SideBar on:connect={handleConnect}/>
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<div class="absolute top-0 bottom-0 left-14 right-0 p-1 scrollbar" id="console">
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</div>
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</div>
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</main>
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<WebVM diskImageUrl={diskImageUrl} diskImageType={diskImageType} />
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