node-mac-system-events.js

'use strict';

var $ = require('nodobjc');

// Load the AppKit framework.
$.framework('AppKit');
// Create delegate that gets notified
var Delegate = $.NSObject.extend('Delegate');


function receiveScreenLockNote(self, cmd, notif) {
  NodeLogger.log('Mac Screen got locked');
}
function receiveScreenUnlockNote(self, cmd, notif) {
  NodeLogger.log('Mac screen got unlocked');
}


Delegate.addMethod('receiveScreenLockNote:', 'v@:@', receiveScreenLockNote);
Delegate.addMethod('receiveScreenUnlockNote:', 'v@:@', receiveScreenUnlockNote);
Delegate.register();

// Instantiate the delegate and set it as observer.
var delegate = Delegate('alloc')('init');
var nc       = $.NSWorkspace('sharedWorkspace')('notificationCenter');

nc(
  'addObserver', delegate,
  'selector'   , 'receiveScreenLockNote:',
  'name'       , $.NSWorkspaceScreensDidSleepNotification,
  'object'     , null
);
nc(
  'addObserver', delegate,
  'selector'   , 'receiveScreenUnlockNote:',
  'name'       , $.NSWorkspaceScreensDidWakeNotification,
  'object'     , null
);

// Set up the runloop.
var app = $.NSApplication('sharedApplication');
function runLoop() {
  var pool = $.NSAutoreleasePool('alloc')('init');
  try {
    app('nextEventMatchingMask', $.NSAnyEventMask.toString(),
        'untilDate',             $.NSDate('distantFuture'),
        'inMode',                $.NSDefaultRunLoopMode,
        'dequeue',               1);
  } catch(e) {
    console.error('run loop error', e.message);
  }
  pool('drain');
  setTimeout(runLoop,1000);
  //process.nextTick(runLoop);
}
runLoop();