/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Firefox.
 *
 * The Initial Developer of the Original Code is
 * the Mozilla Foundation <http://www.mozilla.org/>.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "COMMessageFilter.h"
#include "base/message_loop.h"
#include "mozilla/plugins/PluginModuleChild.h"

#include <stdio.h>

namespace mozilla {
namespace plugins {

HRESULT
COMMessageFilter::QueryInterface(REFIID riid, void** ppv)
{
  if (riid == IID_IUnknown || riid == IID_IMessageFilter) {
    *ppv = static_cast<IMessageFilter*>(this);
    AddRef();
    return S_OK;
  }
  return E_NOINTERFACE;
}

DWORD COMMessageFilter::AddRef()
{
  ++mRefCnt;
  return mRefCnt;
}

DWORD COMMessageFilter::Release()
{
  DWORD r = --mRefCnt;
  if (0 == r)
    delete this;
  return r;
}

DWORD 
COMMessageFilter::HandleInComingCall(DWORD dwCallType,
				     HTASK htaskCaller,
				     DWORD dwTickCount,
				     LPINTERFACEINFO lpInterfaceInfo)
{
  if (mPreviousFilter)
    return mPreviousFilter->HandleInComingCall(dwCallType, htaskCaller,
					       dwTickCount, lpInterfaceInfo);
  return SERVERCALL_ISHANDLED;
}

DWORD
COMMessageFilter::RetryRejectedCall(HTASK htaskCallee,
				    DWORD dwTickCount,
				    DWORD dwRejectType)
{
  if (mPreviousFilter)
    return mPreviousFilter->RetryRejectedCall(htaskCallee, dwTickCount,
					      dwRejectType);
  return -1;
}

DWORD
COMMessageFilter::MessagePending(HTASK htaskCallee,
				 DWORD dwTickCount,
				 DWORD dwPendingType)
{
  mPlugin->FlushPendingRPCQueue();
  if (mPreviousFilter)
    return mPreviousFilter->MessagePending(htaskCallee, dwTickCount,
					   dwPendingType);
  return PENDINGMSG_WAITNOPROCESS;
}

void
COMMessageFilter::Initialize(PluginModuleChild* module)
{
  nsRefPtr<COMMessageFilter> f = new COMMessageFilter(module);
  ::CoRegisterMessageFilter(f, getter_AddRefs(f->mPreviousFilter));
}

} // namespace plugins
} // namespace mozilla
