finetuned autorestore and codemirror

com/codemirror.js

@@ -2,11 +2,17 @@ if( AFRAME.components.codemirror ) delete AFRAME.components.codemirror
 
 AFRAME.registerComponent('codemirror', {
   schema: { 
-    foo: { type:"string"}
+    file: { type:"string"},
+    term: { type:"selector", default: "[isoterminal]" },
   },
 
   init: function () {
     this.el.object3D.visible = false
+    if( !this.data.term || !this.data.term.components ) throw 'codemirror cannot get isoterminal'
+    if( this.data.file && this.data.file[0] != '/'){
+      this.data.file = "root/"+this.data.file
+    }
+    this.isoterminal = this.data.term.components.isoterminal.isoterminal
     //this.el.innerHTML = ` `
     this.requireAll()
   },
@@ -17,10 +23,7 @@ AFRAME.registerComponent('codemirror', {
   },
 
   requires:{
-    window:        "com/window.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"
+    window:        "com/window.js"
   },
 
   dom: {
@@ -49,28 +52,54 @@ AFRAME.registerComponent('codemirror', {
                      `
   },
 
+  createEditor: function(value){
+    this.el.setAttribute("window", `title: codemirror; uid: ${this.el.dom.id}; attach: #overlay; dom: #${this.el.dom.id};`)
+    this.editor = CodeMirror( this.el.dom, {
+      value,
+      mode: "htmlmixed",
+      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")
+    this.editor.updateFile = AFRAME.utils.throttleLeadingAndTrailing( (file,str) => {
+      this.updateFile(file,str), 
+      2000 
+    })
+    this.editor.on('change', (instance,changeObj) => {
+      this.editor.updateFile( this.data.file, instance.getValue() )
+    })
+
+    setTimeout( () => {
+      this.el.setAttribute("html-as-texture-in-xr", `domid: #${this.el.dom.id}`)  // only show aframe-html in xr 
+    },1500)
+  },
+
+  updateFile: async function(file,str){
+    // we don't do via shellcmd: isoterminal.exec(`echo '${str}' > ${file}`,1) 
+    // as it would require all kindof ugly stringescaping
+    console.log("updating "+file)
+    await this.isoterminal.emulator.fs9p.update_file( file, str)
+  },
+
   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.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.isoterminal.emulator.read_file( this.data.file )
+      .then( this.isoterminal.convert.Uint8ArrayToString )
+      .then( (str) => {
+        this.createEditor( str )
+      })
+      .catch( (e) => {
+        console.log("error opening "+this.data.file+", creating new one")
+        this.createEditor("")
       })
-      this.editor.setOption("theme", "shadowfox")
-      setTimeout( () => {
-        this.el.setAttribute("html-as-texture-in-xr", `domid: #${this.el.dom.id}`)  // only show aframe-html in xr 
-      },1500)
     },
   },
 

com/isoterminal.js

@@ -40,7 +40,7 @@ if( typeof AFRAME != 'undefined '){
       minimized:   { type: 'boolean',"default":false},
       maximized:   { type: 'boolean',"default":true},
       transparent: { type:'boolean', "default":false }, // need good gpu
-      xterm:       { type: 'boolean', "default":true }, // use xterm.js (slower)
+      xterm:       { type: 'boolean', "default":true }, // use xterm.js? (=slower)
       memory:      { type: 'number', "default":48   }  // VM memory (in MB)
     },
 

com/isoterminal/feat/9pfs_utils.js

@@ -8,16 +8,17 @@ ISOTerminal.addEventListener('emulator-started', function(){
 
       if(p.id === -1)
       {
-          return Promise.resolve(null);
+          return emulator.create_file(file,data)
       }
       
       const inode = this.GetInode(p.id);
-      const buf   = typeof data == 'string' ? isoterminal.toUint8Array(data) : data
+      const buf   = typeof data == 'string' ? isoterminal.convert.toUint8Array(data) : data
       await this.Write(p.id,0, buf.length, buf )
       // update inode
       inode.size = buf.length
       const now = Math.round(Date.now() / 1000);
       inode.atime = inode.mtime = now;
+      isoterminal.exec(`touch ${file}`) // update inode 
       return new Promise( (resolve,reject) => resolve(buf) )
 
   }
@@ -32,7 +33,7 @@ ISOTerminal.addEventListener('emulator-started', function(){
       }
       
       const inode = this.GetInode(p.id);
-      const buf   = typeof data == 'string' ? isoterminal.toUint8Array(data) : data
+      const buf   = typeof data == 'string' ? isoterminal.convert.toUint8Array(data) : data
       await this.Write(p.id, inode.size, buf.length, buf )
       // update inode
       inode.size = inode.size + buf.length

com/isoterminal/feat/autorestore.js

@@ -2,28 +2,6 @@ ISOTerminal.addEventListener('emulator-started', function(e){
   this.autorestore(e)
 })
 
-ISOTerminal.prototype.convert = {
-
-  arrayBufferToBase64: function(buffer){
-      let binary = '';
-      const bytes = new Uint8Array(buffer);
-      const len = bytes.byteLength;
-      for (let i = 0; i < len; i++) binary += String.fromCharCode(bytes[i]);
-      return window.btoa(binary);
-  },
-
-  base64ToArrayBuffer: function(base64) {
-      const binaryString = window.atob(base64);
-      const len = binaryString.length;
-      const bytes = new Uint8Array(len);
-
-      for (let i = 0; i < len; i++) {
-          bytes[i] = binaryString.charCodeAt(i);
-      }
-      return bytes.buffer;
-  }
-}
-
 ISOTerminal.prototype.autorestore = async function(e){
 
   localforage.setDriver([
@@ -32,7 +10,7 @@ ISOTerminal.prototype.autorestore = async function(e){
   localforage.LOCALSTORAGE
   ]).then( () => {
 
-    localforage.getItem("state", (err,stateBase64) => {
+    localforage.getItem("state", async (err,stateBase64) => {
       if( !err && confirm('continue last session?') ){
         this.noboot = true // see feat/boot.js
         state = this.convert.base64ToArrayBuffer( stateBase64 )
@@ -40,7 +18,19 @@ ISOTerminal.prototype.autorestore = async function(e){
         this.emit('postReady',e)
         setTimeout( () => {
           this.emit('ready',e)
-          this.send("alert last session restored\n")
+          // press CTRL+a l  (=gnu screen redisplay)
+          setTimeout( () => this.send("
l\n"),400 ) 
+          // reload index.js
+          this.emulator.read_file("root/index.js")
+          .then( this.convert.Uint8ArrayToString )
+          .then( this.runJavascript )
+          .catch( console.error )
+          // reload index.html
+          this.emulator.read_file("root/index.html")
+          .then( this.convert.Uint8ArrayToString )
+          .then( this.runHTML )
+          .catch( console.error )
+
         }, 500 )
       } 
     })
@@ -50,6 +40,13 @@ ISOTerminal.prototype.autorestore = async function(e){
       console.log( String(this.convert.arrayBufferToBase64(state)).substr(0,5) )
       localforage.setItem("state", this.convert.arrayBufferToBase64(state) )
     }
+
+    window.addEventListener("beforeunload", function (e) {
+      var confirmationMessage = "Sure you want to leave?\nTIP: enter 'save' to continue this session later";
+      (e || window.event).returnValue = confirmationMessage; //Gecko + IE
+      return confirmationMessage;                            //Webkit, Safari, Chrome
+    });
+
   })
 }
 

com/isoterminal/feat/boot.js

@@ -9,7 +9,7 @@ ISOTerminal.prototype.boot = async function(e){
     if( typeof document.location[i] == 'string' )
       env.push( 'export '+String(i).toUpperCase()+'="'+document.location[i]+'"')
   }
-  await this.emulator.create_file("profile.browser", this.toUint8Array( env.join('\n') ) )
+  await this.emulator.create_file("profile.browser", this.convert.toUint8Array( env.join('\n') ) )
 
   if( this.serial_input == 0 ){
     if( !this.noboot ){

com/isoterminal/feat/index.html.js

@@ -10,14 +10,7 @@ ISOTerminal.addEventListener('init', function(){
       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
+        this.runHTML(html)
       }catch(e){ 
         console.error(e)
       }
@@ -27,3 +20,13 @@ ISOTerminal.addEventListener('init', function(){
 
 })
 
+ISOTerminal.prototype.runHTML = function(html){
+  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
+}

com/isoterminal/feat/index.js.js

@@ -10,13 +10,7 @@ ISOTerminal.addEventListener('init', function(){
       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
+        this.runJavascript(js)
       }catch(e){ 
         console.error(e)
       }
@@ -26,3 +20,13 @@ ISOTerminal.addEventListener('init', function(){
 
 })
 
+ISOTerminal.prototype.runJavascript = function(js){
+  let $root = document.querySelector("script#root")
+  if( !$root ){                          
+    $root = document.createElement("script")
+    $root.id = "root"               
+    document.body.appendChild($root)
+  }                                                            
+  $root.innerHTML = js
+}
+

com/isoterminal/feat/javascript.js

@@ -7,8 +7,7 @@ ISOTerminal.addEventListener('init', function(){
     // unix to js device
     this.readFromPipe( '/mnt/js', async (data) => {
       const buf = await emulator.read_file("js")
-      const decoder = new TextDecoder('utf-8');
-      const script = decoder.decode(buf)
+      const script = this.convert.Uint8ArrayToString(buf)
       let PID="?"
       try{
         if( script.match(/^PID/) ){ 
@@ -18,7 +17,7 @@ ISOTerminal.addEventListener('init', function(){
         if( res && typeof res != 'string' ) res = JSON.stringify(res,null,2)
         // write output to 9p with PID as filename
         // *FIXME* not flexible / robust
-        emulator.create_file(PID, this.toUint8Array(res) )
+        emulator.create_file(PID, this.convert.toUint8Array(res) )
       }catch(e){ 
         console.error(e)
       }

com/window.js

@@ -54,8 +54,8 @@ AFRAME.registerComponent('window', {
         this.el.emit('window.onclose',e)
         if( e.halt ) return true 
         this.data.dom.style.display = 'none';
+        if( this.el.parentNode ) this.el.remove() //parentElement.remove( this.el )
         this.data.dom.parentElement.remove()
-        this.el.parentElement.remove( this.el )
         return false
       },
     });