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/*
 * Copyright (c) 1999-2000, Eric Moon.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions, and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


// observe.cpp

#include "observe.h"

#include <Debug.h>
#include <Message.h>

//__USE_CORTEX_NAMESPACE

// -------------------------------------------------------- //
// *** HELPERS ***
// -------------------------------------------------------- //

// * Asynchronous

status_t __CORTEX_NAMESPACE__ add_observer(
	const BMessenger&				observer,
	const BMessenger&				target) {
//	ASSERT(observer.IsValid());
//	ASSERT(target.IsValid());
	
	BMessage m(M_ADD_OBSERVER);
	m.AddMessenger("observer", observer);
	return target.SendMessage(&m, observer);
}
	
status_t __CORTEX_NAMESPACE__ remove_observer(
	const BMessenger&				observer,
	const BMessenger&				target) {
//	ASSERT(observer.IsValid());
//	ASSERT(target.IsValid());
	
	BMessage m(M_REMOVE_OBSERVER);
	m.AddMessenger("observer", observer);
	return target.SendMessage(&m, observer);
}

// * Synchronous

status_t __CORTEX_NAMESPACE__ add_observer(
	const BMessenger&				observer,
	const BMessenger&				target,
	BMessage&								reply,
	bigtime_t								timeout) {
//	ASSERT(observer.IsValid());
//	ASSERT(target.IsValid());
	
	BMessage m(M_ADD_OBSERVER);
	m.AddMessenger("observer", observer);
	return target.SendMessage(&m, &reply, timeout);
}

status_t __CORTEX_NAMESPACE__ remove_observer(
	const BMessenger&				observer,
	const BMessenger&				target,
	BMessage&								reply,
	bigtime_t								timeout) {
//	ASSERT(observer.IsValid());
//	ASSERT(target.IsValid());
	
	BMessage m(M_REMOVE_OBSERVER);
	m.AddMessenger("observer", observer);
	return target.SendMessage(&m, &reply, timeout);
}

// END -- observe.cpp --