xrsh-com/com/isoterminal/feat/remotekeyboard.js

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JavaScript
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ISOTerminal.prototype.enableRemoteKeyboard = function(opts){
let service = {
ready: false,
reset: (service) => {
service.ip = localStorage.getItem("keyboardIP") || ""
service.ip = service.ip.trim()
service.state = "need-ip"
service.attempts = 0
},
init: function init( mainmenu ){
this.emit('status',"")
this.emit('enable-console',{stdout:true})
service.reset(service)
setTimeout( () => {
const clearScreen = "\r"
this.send(clearScreen);
this.send(`\n\rfor instructions\n\rsee ${document.location.origin}/index.html#Remote%20keyboard\n\n\r`)
this.send("enter 'm' for mainmenu\n\n\r")
this.send("keyboard ip-adress> ")
// autofill ip
if( service.ip ){
for( let i = 0; i < service.ip.length; i++ ) this.send(service.ip.charAt(i))
}
}, 100 )
},
server: (term) => {
try{
service.addr = `ws://${service.ip}:9090/`;
service.ws = new WebSocket(service.addr)
service.ws.addEventListener("open", () => {
if( service.state == 'listening' ){
this.send(`\n\rconnected to ${service.addr}! \\o/\n\r`)
this.bootMenu()
}
service.state = 'receiving'
})
service.ws.addEventListener("close", () => {
service.attempts += 1
if( service.attempts > 3 && service.state == 'listening'){
service.reset(service)
this.send(`\n\roops..I did not detect any connection :/\n\r`)
localStorage.setItem("keyboardIP","") // reset ip
this.bootMenu()
}else setTimeout( () => service.server(term), 1000 ) // retry connection
}) // retry on EOF
service.ws.onmessage = function(event) {
if( !event.data ) return
event.data.arrayBuffer().then( (buf) => {
const arr = new Uint8Array(buf)
let string = Array.from(arr, byte => String.fromCharCode(byte)).join('')
term.term.handler(string)
service.state = 'receiving'
localStorage.setItem("keyboardIP",service.ip) // save ip for later
})
};
}catch(e){
console.error(e)
service.reset(service)
localStorage.setItem("keyboardIP","") // reset ip
this.bootMenu()
}
}
}
// initialize REPL
ISOTerminal.prototype.boot.menu.push(
{
key: "k",
title: (opts) => "connect a remote keyboard",
init: service.init,
keyHandler: function(ch){
this.send(ch)
if( service.state == 'need-ip'){
if( ch == 'm'){
this.send("\n\r")
this.bootMenu()
}else if( ch == '\n' || ch == '\r'){
this.send("\n\rwaiting for connection..")
service.server(this)
service.state = 'listening'
}else{
service.ip = ch == '\b' ? service.ip.substr(0,this.service.ip.length-1)
: service.ip + ch
}
}
}
}
)
}
ISOTerminal.addEventListener('init', function(){
this.enableRemoteKeyboard()
})