Can NodObjC Handle the Event Type?

[matt-]

I am trying to duplicate the following python:

# PyObjC-related imports
import objc
from Foundation import *
from AppKit import *
from PyObjCTools import AppHelper

KEY_UP = 11

class KeySocketApp(NSApplication):

    def sendEvent_(self, event):
        if event.type() is NSSystemDefined and event.subtype() is 8:
            data = event.data1()
            keyCode = (data & 0xFFFF0000) >> 16
            keyFlags = (data & 0x0000FFFF)
            keyState = (keyFlags & 0xFF00) >> 8
            keyRepeat = keyFlags & 0x1

            self.callback(keyCode, keyState)

        NSApplication.sendEvent_(self, event)


if __name__ == '__main__':


    def callback(code, state):
        if state is KEY_UP:
            print str(code)

    app = KeySocketApp.sharedApplication()
    app.callback = callback
    AppHelper.runEventLoop()

So far I have the following JS:

var $ = require('NodObjC')
$.import('Cocoa')

var pool = $.NSAutoreleasePool('alloc')('init'),
    app  = $.NSApplication('sharedApplication');

// set up the app delegate
var AppDelegate = $.NSObject.extend('AppDelegate')

AppDelegate.addMethod('sendEvent_:', 'v', function (self, event) {
  console.log(event);
  app.sendEvent_();
})

AppDelegate.register()

var delegate = AppDelegate('alloc')('init');
app('setDelegate', delegate);
app('activateIgnoringOtherApps', true);
app('run');
pool('release');

[trevorlinton]

@matt- Your example doesn't quite match up with the python one above (although I don't know python, they're doing two different things).

The Python example extends the NSApplication and overrides its sendEvent method (or, at least, appears to). While the nodobjc example you have creates a delegate and assigns the delegate to the application.

Delegates are not the same as extending (and overriding) a method in an existing object. What you'd probably want to do is:

$.NSApplication.extend('KeySocketApp');
$.KeySocketApp ... // and so on...

Delegates are just an object that NSApplication can ask questions about how it should function (what you implemented). However extending and overriding a method is taking the existing Class/Object and overriding its behavior to do something new. It's generally regarded (especially on NSApplication, a very core class/object) as a bad idea, but can be very powerful if you're careful.

Good luck!

[trevorlinton]

Not a bug, don't hate me for closing it :)

[matt-]

Oops, no hate! Sorry for not closing this myself I was able to resolve my issue with the following:

var $ = require('NodObjC');
$.framework('AppKit');

var app = $.NSApplication.extend('KeyApp');
app.addMethod('sendEvent:','v@:@', function(self, _cmd, nsevent){
    console.log(nsevent);
});
app.register();
app('sharedApplication')('run');