Gnome Shell Eval Wrapper

gnome-eval.js

const { spawn } = require('child_process')

const argument = {
  width: 500,
  height: 300,
  x: 100,
  y: 100,
}

/*
  https://developer.gnome.org/meta/stable/MetaWindow.html
  https://developer.gnome.org/meta/stable/MetaWindowActor.html
*/

shellEval(size => {
  let windows = global.get_window_actors()
  windows.forEach(w => {
    const mw = w.get_meta_window()
    if (mw.appears_focused) {
      mw.move_resize_frame(
        true,
        size.x,
        size.y,
        size.width,
        size.height
      )
    }
  })
}, argument)

shellEval(() => {
  imports.ui.status.keyboard
    .getInputSourceManager()
    .inputSources[0].activate()
})
//.then(console.log)

/**************************************************/

function makeEvalString(fn, arg) {
  return `(${fn.toString()})(${JSON.stringify(arg)})`
}

function shellEval(fn = () => {}, arg = {}) {
  return new Promise(resolve => {
    const str = makeEvalString(fn, arg)
    const gdbus = spawn('gdbus', [
      'call',
      '--session',
      '--dest',
      'org.gnome.Shell',
      '--object-path',
      '/org/gnome/Shell',
      '--method',
      'org.gnome.Shell.Eval',
      str,
    ])
    // gdbus.stdout.on("data", data => {})
    // gdbus.stderr.on("data", data => {})
    gdbus.on('close', resolve)
  })
}