improved xterm<->iso<->uart<->javascript communication + added codemirror startingpoint

com/codemirror.js

@@ -0,0 +1,120 @@
+AFRAME.registerComponent('codemirror', {
+  schema: { 
+    foo: { type:"string"}
+  },
+
+  init: function () {
+    this.el.object3D.visible = false
+    //this.el.innerHTML = ` `
+    this.requireAll()
+  },
+
+  requireAll: async function(){
+    let s = await AFRAME.utils.require(this.requires)
+    setTimeout( () => this.el.setAttribute("dom",""), 300 )
+  },
+
+  requires:{
+    window:        "com/window.js",
+    htmltexture:   "com/html-as-texture-in-xr.js",
+    codemirror:    "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.58.1/codemirror.js",
+    codemirrorcss: "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/codemirror.css",
+    cmtheme:       "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/theme/shadowfox.css"
+  },
+
+  dom: {
+    scale:   0.5,
+    events:  ['click','keydown'],
+    html:    (me) => `<div class="codemirror">
+                      </div>`,
+
+    css:     (me) => `.codemirror{
+                        width:100%;
+                     }
+                     .wb-body + .codemirror{ overflow:hidden; }
+                     .CodeMirror {
+                      margin-top:18px;
+                     }
+                     .cm-s-shadowfox.CodeMirror {
+                       background:transparent !important; 
+                     }
+                     `
+  },
+
+  events:{
+
+    // component events
+    DOMready: function(e){
+      console.log(`title: codemirror; uid: ${this.el.dom.id}; attach: #overlay; dom: #${this.el.dom.id};`)
+      this.el.setAttribute("window", `title: codemirror; uid: ${this.el.dom.id}; attach: #overlay; dom: #${this.el.dom.id};`)
+      this.el.setAttribute("html-as-texture-in-xr", `domid: #${this.el.dom.id}`)  // only show aframe-html in xr 
+      this.editor = CodeMirror( this.el.dom, {
+        value: "function myScript(){return 100;}\n",
+        mode:  "javascript",
+        lineNumbers: true,
+        styleActiveLine: true,
+        matchBrackets: true,
+        Tab: "indentMore",
+        defaultTab: function(cm) {
+          if (cm.somethingSelected()) cm.indentSelection("add");
+          else cm.replaceSelection("  ", "end");
+        }
+      })
+      this.editor.setOption("theme", "shadowfox")
+    },
+  },
+
+
+  manifest: { // HTML5 manifest to identify app to xrsh
+    "short_name": "Paste",
+    "name": "Paste",
+    "icons": [
+      {
+        "src": "https://css.gg/clipboard.svg",
+        "type": "image/svg+xml",
+        "sizes": "512x512"
+      }
+    ],
+    "id": "/?source=pwa",
+    "start_url": "/?source=pwa",
+    "background_color": "#3367D6",
+    "display": "standalone",
+    "scope": "/",
+    "theme_color": "#3367D6",
+    "shortcuts": [
+      {
+        "name": "What is the latest news?",
+        "cli":{
+          "usage":  "helloworld <type> [options]",
+          "example": "helloworld news",
+          "args":{
+            "--latest": {type:"string"}
+          }
+        },
+        "short_name": "Today",
+        "description": "View weather information for today",
+        "url": "/today?source=pwa",
+        "icons": [{ "src": "/images/today.png", "sizes": "192x192" }]
+      }
+    ],
+    "description": "Paste the clipboard",
+    "screenshots": [
+      {
+        "src": "/images/screenshot1.png",
+        "type": "image/png",
+        "sizes": "540x720",
+        "form_factor": "narrow"
+      }
+    ],
+    "help":`
+Helloworld application 
+
+This is a help file which describes the application.
+It will be rendered thru troika text, and will contain
+headers based on non-punctualized lines separated by linebreaks,
+in above's case "\nHelloworld application\n" will qualify as header.
+    `
+  }
+
+});
+

com/isoterminal.js

@@ -1,7 +1,9 @@
-function ISOTerminal(){
+function ISOTerminal(instance,opts){
   // create a neutral isoterminal object which can be decorated
   // with prototype functions and has addListener() and dispatchEvent()
   let obj      = new EventTarget()
+  obj.instance = instance
+  obj.opts     = opts 
   // register default event listeners (enable file based features like isoterminal/jsconsole.js e.g.)
   for( let event in ISOTerminal.listener )
     for( let cb in ISOTerminal.listener[event] )
@@ -31,10 +33,14 @@ if( typeof AFRAME != 'undefined '){
   AFRAME.registerComponent('isoterminal', {
     schema: {
       iso:         { type:"string", "default":"com/isoterminal/images/buildroot-bzimage.bin" },
+      overlayfs:   { type:"string"},
       cols:        { type: 'number',"default": 120 },
       rows:        { type: 'number',"default": 30 },
       padding:     { type: 'number',"default": 18 },
-      transparent: { type:'boolean', "default":false } // need good gpu
+      maximized:   { type: 'boolean',"default":true},
+      transparent: { type:'boolean', "default":false }, // need good gpu
+      xterm:       { type: 'boolean', "default":true }, // use xterm.js (slower)
+      memory:      { type: 'number', "default":32   }  // VM memory (in MB)
      },
 
     init: async function(){
@@ -45,8 +51,6 @@ if( typeof AFRAME != 'undefined '){
     requires:{
       com:         "com/dom.js",
       window:      "com/window.js",
-      xtermjs:     "https://unpkg.com/@xterm/xterm@5.5.0/lib/xterm.js",
-      xtermcss:    "https://unpkg.com/@xterm/xterm@5.5.0/css/xterm.css",
       v86:         "com/isoterminal/libv86.js",
       // allow xrsh to selfcontain scene + itself
       xhook:       "https://jpillora.com/xhook/dist/xhook.min.js",
@@ -57,16 +61,20 @@ if( typeof AFRAME != 'undefined '){
       core:        "com/isoterminal/core.js",
       utils_9p:    "com/isoterminal/feat/9pfs_utils.js",
       boot:        "com/isoterminal/feat/boot.js",
-      xterm:       "com/isoterminal/feat/xterm.js",
       jsconsole:   "com/isoterminal/feat/jsconsole.js",
       javascript:  "com/isoterminal/feat/javascript.js",
-      index:       "com/isoterminal/feat/index.html.js",
+      indexhtml:   "com/isoterminal/feat/index.html.js",
+      indexjs:     "com/isoterminal/feat/index.js.js",
     },
 
     dom: {
       scale:   0.5,
       events:  ['click','keydown'],
-      html:    (me) => `<div class="isoterminal"></div>`,
+      html:    (me) => `<div class="isoterminal">
+                          <div id="screen" style="white-space: pre; font: 14px monospace; "></div>
+                          <canvas style="display: none"></canvas> 
+<div id="serial"></div>
+                        </div>`,
 
       css:     (me) => `.isoterminal{
                           padding: ${me.com.data.padding}px;
@@ -77,7 +85,9 @@ if( typeof AFRAME != 'undefined '){
                            white-space: pre;
                            font-size: 14px;
                            font-family: Liberation Mono,DejaVu Sans Mono,Courier New,monospace;
-                           font-weight:700;
+                           font-weight:900 !important;
+                           letter-spacing: 0 !important;
+                           line-height:16px;
                            display:inline;
                            overflow: hidden;
                         }
@@ -85,7 +95,7 @@ if( typeof AFRAME != 'undefined '){
                         .isoterminal style{ display:none }
 
                         .wb-body:has(> .isoterminal){ 
-                          background: #000F; 
+                          background: #000C; 
                           overflow:hidden;
                         }
 
@@ -113,6 +123,12 @@ if( typeof AFRAME != 'undefined '){
 
     initTerminal: async function(singleton){
 
+      if( this.data.xterm ){
+        this.requires.xtermjs  = "https://unpkg.com/@xterm/xterm@5.5.0/lib/xterm.js"
+        this.requires.xtermcss = "https://unpkg.com/@xterm/xterm@5.5.0/css/xterm.css"
+        this.requires.xterm    = "com/isoterminal/feat/xterm.js"
+      }
+
       let s = await AFRAME.utils.require(this.requires)
 
       this.el.setAttribute("selfcontainer","")
@@ -132,10 +148,13 @@ if( typeof AFRAME != 'undefined '){
       }
 
       // init isoterminal
-      this.isoterminal = new ISOTerminal()
+      this.isoterminal = new ISOTerminal(instance,this.data)
 
       instance.addEventListener('DOMready', () => {
-        instance.setAttribute("window", `title: xrsh [booting linux iso..]; uid: ${instance.uid}; attach: #overlay; dom: #${instance.dom.id}`)
+        //instance.winbox.resize(720,380)
+        let size = this.data.xterm ? 'width: 1024px; height:600px'
+                                   : 'width: 720px; height:455px'
+        instance.setAttribute("window", `title: xrsh.iso; uid: ${instance.uid}; attach: #overlay; dom: #${instance.dom.id}; ${size}`)
       })
 
       instance.addEventListener('window.oncreate', (e) => {
@@ -146,9 +165,18 @@ if( typeof AFRAME != 'undefined '){
         this.isoterminal.runISO(opts)
       })
 
-      this.isoterminal.addEventListener('ready', function(e){
+      instance.setAttribute("dom",      "")
+
+
+      this.isoterminal.addEventListener('postReady', (e)=>{
+        // bugfix: send window dimensions to xterm (xterm.js does that from dom-sizechange to xterm via escape codes)
+        if( this.data.maximized ) instance.winbox.maximize()
+        else instance.winbox.resize()
+      })
+
+      this.isoterminal.addEventListener('ready', (e)=>{
         instance.dom.classList.remove('blink')
-        instance.winbox.maximize()
+        this.isoterminal.emit('status',"running")
         setTimeout( () => { // important: after window maximize animation to get true size
           instance.setAttribute("html-as-texture-in-xr", `domid: #${instance.uid}`)  // only show aframe-html in xr 
         },1500)
@@ -159,31 +187,23 @@ if( typeof AFRAME != 'undefined '){
         const w = instance.winbox
         if(!w) return
         w.titleBak = w.titleBak || w.title
-        instance.winbox.setTitle( `${w.titleBak} [${msg}]` )
+        w.setTitle( `${w.titleBak} [${msg}]` )
       })
 
       instance.addEventListener('window.onclose', (e) => {
         if( !confirm('do you want to kill this virtual machine and all its processes?') ) e.halt = true
       })
 
-      const resize = (w,h) => {
+      const resize = (w,h) => { }
-        if( this.isoterminal.emulator && this.isoterminal.emulator.serial_adapter ){
-          setTimeout( () => {
-            this.isoterminal.xtermAutoResize(this.isoterminal.emulator.serial_adapter.term,instance,-5)
-          },800) // wait for resize anim
-        }
-      }
       instance.addEventListener('window.onresize', resize )
       instance.addEventListener('window.onmaximize', resize )
 
-      instance.setAttribute("dom",      "")
+      const focus = (e) => {
-
-      const focus = () => {
         if( this.isoterminal?.emulator?.serial_adapter?.focus ){
           this.isoterminal.emulator.serial_adapter.term.focus()
         }
       }
-      instance.addEventListener('obbcollisionstarted', focus )
+      //instance.addEventListener('obbcollisionstarted', focus )
       this.el.sceneEl.addEventListener('enter-vr', focus )
       this.el.sceneEl.addEventListener('enter-ar', focus )
       

com/isoterminal/core.js

@@ -2,9 +2,24 @@
 //  // exec(['lua'] "print \"hello\") ---> cat /dev/browser/js/stdin | lua > /dev/browser/js/stdout
 //}
 
-ISOTerminal.prototype.send = function(ttyNr, str){
+ISOTerminal.prototype.serial_input = undefined; // can be set to 0,1,2,3 to define stdinput tty (xterm plugin)
+
+ISOTerminal.prototype.exec = function(shellscript){
+  //let ts = String(Date.now())+".job"
+  //this.emulator.create_file(ts, this.toUint8Array(shellscript) )
+  this.send(shellscript+"\n",1)
+}
+
+ISOTerminal.prototype.send = function(str, ttyNr){
+  if( !ttyNr ) ttyNr = this.serial_input
+  if( !ttyNr ){
+    if( this.emulator.serial_adapter ){
+      this.emulator.serial_adapter.term.paste(str)
+    }else this.emulator.keyboard_send_text(str) // vga screen
+  }else{
     this.toUint8Array( str ).map( (c) => this.emulator.bus.send(`serial${ttyNr}-input`, c ) )
   }
+}
 
 ISOTerminal.prototype.toUint8Array = function(str) {
   str = String(str) || String("")
@@ -19,28 +34,31 @@ ISOTerminal.prototype.toUint8Array = function(str) {
 },
 
 ISOTerminal.prototype.runISO = function(opts){
-  this.opts = opts
+
+  let me = this
+  this.opts = {...this.opts, ...opts}
   let image = {}
   if( opts.iso.match(/\.iso$/) ) image.cdrom   = { url: opts.iso }
   if( opts.iso.match(/\.bin$/) ) image.bzimage = { url: opts.iso }
 
-  let emulator = this.emulator = new V86({ ...image,
+  opts = { ...image,
     uart1:true, // /dev/ttyS1
     uart2:true, // /dev/ttyS2
     uart3:true, // /dev/ttyS3
     wasm_path:        "com/isoterminal/v86.wasm",
-    memory_size:      32 * 1024 * 1024,
+    memory_size:      opts.memory * 1024 * 1024,
-    vga_memory_size:  2 * 1024 * 1024,
+    vga_memory_size:  1024, //2 * 1024 * 1024,
-    serial_container_xtermjs: opts.dom,
+    screen_container: opts.dom,
-    //screen_container: dom, //this.canvas.parentElement,
+    //serial_container: opts.dom,
     bios: {
       url: "com/isoterminal/bios/seabios.bin",
     },
     vga_bios: {
       url: "com/isoterminal/bios/vgabios.bin",
+      //urg|: "com/isoterminal/bios/VGABIOS-lgpl-latest.bin",
     },
     network_relay_url: "wss://relay.widgetry.org/",
-    cmdline: "rw root=host9p rootfstype=9p rootflags=trans=virtio,cache=loose modules=virtio_pci tsc=reliable init_on_free=on",
+    cmdline: "rw root=host9p rootfstype=9p rootflags=trans=virtio,cache=loose modules=virtio_pci tsc=reliable init_on_freg|=on vga=ask", //vga=0x122",
     //bzimage_initrd_from_filesystem: true,
     //filesystem: {
     //          baseurl: "com/isoterminal/v86/images/alpine-rootfs-flat",
@@ -50,8 +68,9 @@ ISOTerminal.prototype.runISO = function(opts){
     //disable_jit: false,
     filesystem: {},
     autostart: true,
-  });
+  };
-
+  this.emit('runISO',opts)
+  let emulator = this.emulator = new V86(opts)
 
   const loading = [
     'loading quantum bits and bytes',
@@ -77,51 +96,39 @@ ISOTerminal.prototype.runISO = function(opts){
     'Transcending earthly limits'
   ]
 
-  let loadmsg = loading[ Math.floor(Math.random()*1000) % loading.length-1 ]
+  let loadmsg = loading[ Math.floor(Math.random()*1000) % loading.length ]
   this.emit('status',loadmsg)
 
   // replace welcome message https://github.com/copy/v86/blob/3c77b98bc4bc7a5d51a2056ea73d7666ca50fc9d/src/browser/serial.js#L231
   let welcome = "This is the serial console. Whatever you type or paste here will be sent to COM1"
-
   let motd = "\r" 
   let msg  = `${loadmsg}, please wait..`
   while( msg.length < welcome.length ) msg += " "
   msg += "\n"
   motd += msg+"\033[0m"
 
-  const files = [
-    "com/isoterminal/mnt/js",
-    "com/isoterminal/mnt/jsh",
-    "com/isoterminal/mnt/xrsh",
-    "com/isoterminal/mnt/profile",
-    "com/isoterminal/mnt/profile.sh",
-    "com/isoterminal/mnt/profile.xrsh",
-    "com/isoterminal/mnt/profile.js",
-    "com/isoterminal/mnt/motd",
-    "com/isoterminal/mnt/v86pipe"
-  ]
-
   emulator.bus.register("emulator-started", async (e) => {
     this.emit('emulator-started',e)
+
+    if( emulator.serial_adapter ){
       emulator.serial_adapter.term.clear()
       emulator.serial_adapter.term.write(motd)
+    }
 
-    let p = files.map( (f) => fetch(f) )
+
-    Promise.all(p)
+    if( me.opts.overlayfs ){
-    .then( (files) => {
+      fetch(me.opts.overlayfs)
-      files.map( (f) => {
+      .then( (f) => {
         f.arrayBuffer().then( (buf) => {
-          emulator.create_file( f.url.replace(/.*mnt\//,''), new Uint8Array(buf) )
+          emulator.create_file('overlayfs.zip', new Uint8Array(buf) )
-        })
         })
       })
+    }
 
-    //emulator.serial0_send('chmod +x /mnt/js')
-    //emulator.serial0_send()
     let line = ''
     let ready = false
-    emulator.add_listener("serial0-output-byte", async (byte) => {
+    emulator.add_listener(`serial0-output-byte`, async (byte) => {
-        this.emit('serial0-output-byte',byte)
+        this.emit('${this.serial}-output-byte',byte)
         var chr = String.fromCharCode(byte);
         if(chr < " " && chr !== "\n" && chr !== "\t" || chr > "~")
         {
@@ -137,12 +144,10 @@ ISOTerminal.prototype.runISO = function(opts){
         {
             line += chr;
         }
-
+        if( !ready && line.match(/^(\/ #|~%|\[.*\]>)/) ){
-        if( !ready && line.match(/^(\/ #|~%)/) ){
+          this.emit('postReady')
-          this.emit('ready')
+          setTimeout( () => this.emit('ready'), 500 )
           ready = true
-            //emulator.serial0_send("root\n")
-            //emulator.serial0_send("mv /mnt/js . && chmod +x js\n")
         }
     });    
   });

com/isoterminal/feat/boot.js

@@ -10,12 +10,15 @@ ISOTerminal.prototype.boot = async function(){
       env.push( 'export '+String(i).toUpperCase()+'="'+document.location[i]+'"')
   }
   await this.emulator.create_file("profile.browser", this.toUint8Array( env.join('\n') ) )
-  let boot = `clear ; echo 'preparing xrsh env..'; source /mnt/profile`
+  if( this.serial_input == 0 ){
-  // exec hash as extra boot cmd
+    let boot = "source /etc/profile\n"
-  if( document.location.hash.length > 1 ){ 
+    this.send(boot+"\n")
-    boot += ` ; cmd='${decodeURI(document.location.hash.substr(1))}' && $cmd`
+  }
-  }
+
-  this.emulator.serial0_send(boot+"\n")
+  if( this.emulator.serial_adapter ) this.emulator.serial_adapter.term.focus()
-  this.emulator.serial_adapter.term.focus()
+  else{
+    let els = [...document.querySelectorAll("div#screen")]
+    els.map( (el) => el.focus() )
+  }
 }
 

com/isoterminal/feat/index.html.js

@@ -1,10 +1,29 @@
-ISOTerminal.addEventListener('ready', function(){
+ISOTerminal.addEventListener('init', function(){
-  this.addEventListener('file-read', (e) => {
+
-    const data = e.detail
+  this.addEventListener('emulator-started', function(e){
-    if( data.file == 'index.html'){
+
-      data.promise = new Promise( (resolve,reject) => {
+    const emulator = this.emulator
-        resolve( this.toUint8Array(document.documentElement.outerHTML) )
+
-      })
+    // unix to js device
+    this.readFromPipe( '/mnt/index.html', async (data) => {
+      const buf = await emulator.read_file("index.html")
+      const decoder = new TextDecoder('utf-8');
+      const html = decoder.decode(buf)
+      try{
+        let $scene = document.querySelector("a-scene")
+        let $root = document.querySelector("a-entity#root")
+        if( !$root ){                          
+          $root = document.createElement("a-entity")
+          $root.id = "root"               
+          $scene.appendChild($root)
+        }                                                            
+        $root.innerHTML = html
+      }catch(e){ 
+        console.error(e)
       }
     })
+  
   })  
+
+})
+

com/isoterminal/feat/index.js.js

@@ -0,0 +1,28 @@
+ISOTerminal.addEventListener('init', function(){
+
+  this.addEventListener('emulator-started', function(e){
+
+    const emulator = this.emulator
+
+    // unix to js device
+    this.readFromPipe( '/mnt/index.js', async (data) => {
+      const buf = await emulator.read_file("index.js")
+      const decoder = new TextDecoder('utf-8');
+      const js = decoder.decode(buf)
+      try{
+        let $root = document.querySelector("script#root")
+        if( !$root ){                          
+          $root = document.createElement("script")
+          $root.id = "root"               
+          document.body.appendChild($root)
+        }                                                            
+        $root.innerHTML = js
+      }catch(e){ 
+        console.error(e)
+      }
+    })
+  
+  })  
+
+})
+

com/isoterminal/feat/javascript.js

@@ -6,7 +6,7 @@ ISOTerminal.addEventListener('init', function(){
 
     // unix to js device
     this.readFromPipe( '/mnt/js', async (data) => {
-      const buf = await emulator.read_file("dev/browser/js")
+      const buf = await emulator.read_file("js")
       const decoder = new TextDecoder('utf-8');
       const script = decoder.decode(buf)
       let PID="?"

com/isoterminal/feat/jsconsole.js

@@ -30,14 +30,12 @@ ISOTerminal.addEventListener('emulator-started', function(){
   let emulator = this.emulator
 
   this.redirectConsole( (str,prefix) => {
-    if( emulator.log_to_tty ){
+    let finalStr = ""
     prefix = prefix ? prefix+' ' : ' '
     str.trim().split("\n").map( (line) => {
-        emulator.serial_adapter.term.write( '\r\x1b[38;5;165m/dev/browser: \x1b[0m'+prefix+line+'\n' )
+      finalStr += '\x1b[38;5;165m/dev/browser: \x1b[0m'+prefix+line+'\n'
     })
-      emulator.serial_adapter.term.write( '\r' )
+    emulator.fs9p.append_file( "console", finalStr )
-    }
-    emulator.fs9p.append_file( "console", str )
   })
 
   window.addEventListener('error', function(event) {

com/isoterminal/feat/screenbuttons.js

@@ -0,0 +1,13 @@
+ISOTerminal.addEventListener('ready', function(){
+  this.screenButtonsCreate()
+})
+
+ISOTerminal.prototype.screenButtonsCreate = function(){
+  let el = document.createElement("a-plane")
+  el.setAttribute("height","1")
+  el.setAttribute("width","1")
+  el.setAttribute("scale","0.1 0.07 1")
+  el.setAttribute("position", "-0.326 -0.270 0")
+  this.instance.appendChild(el)
+}
+

com/isoterminal/feat/xterm.js

@@ -2,7 +2,14 @@ ISOTerminal.addEventListener('init', function(){
   if( typeof Terminal != 'undefined' ) this.xtermInit()
 })
 
+ISOTerminal.addEventListener('runISO', function(e){
+  let opts = e.detail
+  opts.serial_container_xtermjs = opts.screen_container
+  delete opts.screen_container
+})
+
 ISOTerminal.prototype.xtermInit = function(){
+  this.serial_input = 0 // set input to serial line 0
   let isoterm = this
   // monkeypatch Xterm (which V86 initializes) so we can add our own constructor args 
   window._Terminal = window.Terminal 
@@ -11,7 +18,8 @@ ISOTerminal.prototype.xtermInit = function(){
       cursorBlink:true,
       onSelectionChange: function(e){
         debugger
-      }
+      },
+      letterSpacing: 0
     })
 
     term.onSelectionChange( () => {
@@ -27,6 +35,14 @@ ISOTerminal.prototype.xtermInit = function(){
     // toggle immersive with ESCAPE
     //document.body.addEventListener('keydown', (e) => e.key == 'Escape' && this.emulator.serial_adapter.term.blur() )
   })
+
+  const resize = (w,h) => {
+    setTimeout( () => {
+      isoterm.xtermAutoResize(isoterm.emulator.serial_adapter.term, isoterm.instance,-2)
+    },800) // wait for resize anim
+  }
+  isoterm.instance.addEventListener('window.onresize', resize )
+  isoterm.instance.addEventListener('window.onmaximize', resize )
 }
 
 ISOTerminal.prototype.xtermAutoResize = function(term,instance,rowoffset){

com/isoterminal/mnt/xrsh

@@ -1,62 +0,0 @@
-#!/bin/sh
-#
-# a minimalistic terminal muxer 
-
-# Save the original stdout and stderr file descriptors for later restoration
-exec 3>&1 4>&2
-
-# Function to check if a session is already running on the given VT
-is_session_running() {
-    vt_number=$1
-
-    # Check if any process is running on /dev/tty<vt_number>
-    fuser /dev/tty"$vt_number" >/dev/null 2>&1
-    return $?
-}
-
-# Function to mute the output of a session
-mute_session() {
-    vt_number=$1
-    if is_session_running "$vt_number"; then
-        # Redirect stdout and stderr of the session to /dev/null
-        exec > /dev/null 2>&1
-    fi
-}
-
-# Function to unmute the current session (restore stdout and stderr)
-unmute_session() {
-    exec 1>&3 2>&4  # Restore stdout and stderr from file descriptors 3 and 4
-}
-
-# Function to start a new session if not already running
-start_or_switch_session() {
-    vt_number=$1
-
-    # Mute all other sessions except the one we're switching to
-    for vt in $(seq 1 12); do  # Assuming you have up to 12 VTs, adjust as needed
-        if [ "$vt" != "$vt_number" ]; then
-            mute_session "$vt"
-        fi
-    done
-
-    if is_session_running "$vt_number"; then
-        echo "Switching to existing session on VT$vt_number"
-        unmute_session  # Unmute the session we're switching to
-        chvt "$vt_number"
-    else
-        echo "Starting a new session on VT$vt_number"
-        openvt -c "$vt_number" -- /bin/sh &
-        sleep 1  # Give the session a moment to start
-        unmute_session  # Unmute the new session
-        chvt "$vt_number"
-    fi
-}
-
-# Ensure a session number is provided
-if [ "$#" -ne 1 ]; then
-    echo "Usage: $0 <session_number>"
-    exit 1
-fi
-
-# Start or switch to the session
-start_or_switch_session $1

com/window.js

@@ -6,6 +6,7 @@ AFRAME.registerComponent('window', {
     uid:       {type:'string'},
     attach:    {type:'selector'},
     dom:       {type:'selector'},
+    max:       {type:'boolean',"default":false},
     x:         {type:'string',"default":"center"},
     y:         {type:'string',"default":"center"}
   },
@@ -33,13 +34,14 @@ AFRAME.registerComponent('window', {
       id:  this.data.uid || String(Math.random()).substr(4), // important hint for html-mesh
       root: this.data.attach || document.body,
       mount: this.data.dom,
+      max: this.data.max,
       onresize: () => this.el.emit('window.onresize',{}),
       onmaximize: () => this.el.emit('window.onmaximize',{}),
-      oncreate: () => {
+      oncreate: (e) => {
         this.el.emit('window.oncreate',{})
         // resize after the dom content has been rendered & updated 
         setTimeout( () => {
-          winbox.resize( this.el.dom.offsetWidth+'px', this.el.dom.offsetHeight+'px' )
+          if( !this.data.max ) winbox.resize( this.el.dom.offsetWidth+'px', this.el.dom.offsetHeight+'px' )
           // hint grabbable's obb-collider to track the window-object
           this.el.components['obb-collider'].data.trackedObject3D = 'components.html.el.object3D.children.0'
           this.el.components['obb-collider'].update()