controlctr.js

var menuOpts = {
  a:{
    "Reboot Userspace":()=>{
      shellrun("launchctl reboot userspace")
    },
    Respring:()=>{
      device.respring()
    },
    "Safe Mode":()=>{
      shellrun("killall -SEGV SpringBoard")
    },
    UICache:()=>{
      shellrun("uicache")
    },
    More:()=>{
      presentMenu("More","","b")
    }
  },
  b:{
    "Run MK1 Script":()=>{
      prompt("Run MK1 Script","",(script)=>{
        if(script) MK1.runScript(script);
      })
    }
  },
  Cancel:()=>{
    // Does nothing
  }
}

function presentMenu(title, msg, submenu){
  var list = Object.keys(menuOpts[submenu])
  list.push("Cancel")
  menu(title, msg, list ,(choice)=>{
    (menuOpts[submenu][list[choice]] || menuOpts.Cancel)();
  })
}

presentMenu("PowerSelector","","a")