JXA macOS Automation: Fast User Switching

fast-user-switch.jxa.js

#!/usr/bin/env osascript -l JavaScript

const USER = 'stephan';

function run() {
  const ControlCenterPID =
    $.NSRunningApplication.runningApplicationsWithBundleIdentifier(
      'com.apple.controlcenter',
    ).firstObject.processIdentifier;

  const ControlCenter = $.AXUIElementCreateApplication(ControlCenterPID);

  const $ccMenu = Ref();
  $.AXUIElementCopyAttributeValue(ControlCenter, 'AXChildren', $ccMenu);

  const $ccMenuItems = Ref();
  $.AXUIElementCopyAttributeValue($ccMenu[0].js[0], 'AXChildren', $ccMenuItems);

  const $itemDesc = Ref();
  const ccUserMenu = $ccMenuItems[0].js.find(
    (item) =>
      $.AXUIElementCopyAttributeValue(item, 'AXDescription', $itemDesc) ||
      !!`${$itemDesc[0].js}`.match(/user/i),
  );
  $.AXUIElementPerformAction(ccUserMenu, 'AXPress');

  delay(0.1);

  const $ccWindows = Ref();
  $.AXUIElementCopyAttributeValue(ControlCenter, 'AXWindows', $ccWindows);

  const $ccUserWindowContent = Ref();
  $.AXUIElementCopyAttributeValue(
    $ccWindows[0].js[0],
    'AXChildren',
    $ccUserWindowContent,
  );

  const $ccUsers = Ref();
  $.AXUIElementCopyAttributeValue(
    $ccUserWindowContent[0].js[0],
    'AXChildren',
    $ccUsers,
  );

  const $userDesc = Ref();
  const userButton = $ccUsers[0].js.find(
    (user) =>
      $.AXUIElementCopyAttributeValue(
        user,
        'AXAttributedDescription',
        $userDesc,
      ) || !!`${$userDesc[0].string.js}`.match(new RegExp(USER, 'i')),
  );

  $.AXUIElementPerformAction(userButton, 'AXPress');
  return 0;
}

// prettier-ignore
(() => {
ObjC.import('Cocoa');

ObjC.bindFunction('AXUIElementPerformAction', ['int', ['id', 'id']]);
ObjC.bindFunction('AXUIElementCreateApplication', ['id', ['unsigned int']]);
ObjC.bindFunction('AXUIElementCopyAttributeValue',['int', ['id', 'id', 'id*']]);
})();