objcnew.py 文件源码

def on_main_thread(func):
    if not callable(func):
        raise TypeError('expected a callable')
    def new_func(*args, **kwargs):
        if NSThread.isMainThread(restype=c_bool, argtypes=[]):
            return func(*args, **kwargs)
        dispatcher = OMMainThreadDispatcher.new()
        dispatcher.func = func
        dispatcher.args = args
        dispatcher.kwargs = kwargs
        dispatcher.retval = None
        dispatcher.performSelectorOnMainThread_withObject_waitUntilDone_(sel('invoke'), None, True)
        retval = dispatcher.retval
        dispatcher.release()
        return retval
    return new_func