/*
 * libjingle
 * Copyright 2004--2005, Google Inc.
 *
 * 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 
 * 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.
 */

#include "talk/base/common.h"
#include "talk/xmpp/moduleimpl.h"

namespace buzz {

XmppModuleImpl::XmppModuleImpl() :
  engine_(NULL),
  stanza_handler_(this) {
}

XmppModuleImpl::~XmppModuleImpl()
{
  if (engine_ != NULL) {
    engine_->RemoveStanzaHandler(&stanza_handler_);
    engine_ = NULL;
  }
}

XmppReturnStatus
XmppModuleImpl::RegisterEngine(XmppEngine* engine)
{
  if (NULL == engine || NULL != engine_)
    return XMPP_RETURN_BADARGUMENT;

  engine->AddStanzaHandler(&stanza_handler_);
  engine_ = engine;

  return XMPP_RETURN_OK;
}

XmppEngine*
XmppModuleImpl::engine() {
  ASSERT(NULL != engine_);
  return engine_;
}

}