/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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.org code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Conrad Carlen <ccarlen@netscape.com>
 *
 *
 * 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
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 * the provisions above, a recipient may use your version of this file under
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 *
 * ***** END LICENSE BLOCK ***** */

#include "nsComponentResContext.h"
#include <Resources.h>

short nsComponentResourceContext::sCompResRefNum   = kResFileNotOpened;

pascal OSErr __NSInitialize(const CFragInitBlock *theInitBlock);
pascal OSErr __NSInitializeWithResources(const CFragInitBlock *theInitBlock);

pascal void __NSTerminate(void);
pascal void __NSTerminateWithResources(void);

//****************************************************************************************
// Fragment Init and Termination
//****************************************************************************************

pascal OSErr __NSInitializeWithResources(const CFragInitBlock *theInitBlock)
{
    OSErr err = __NSInitialize(theInitBlock);
    if (err)
    	return err;

	short saveResFile = ::CurResFile();

	short refNum = ::FSpOpenResFile(theInitBlock->fragLocator.u.onDisk.fileSpec, fsRdPerm);
	nsComponentResourceContext::sCompResRefNum = refNum;

	::UseResFile(saveResFile);

	return ::ResError();
}

pascal void __NSTerminateWithResources(void)
{
    if (nsComponentResourceContext::sCompResRefNum != kResFileNotOpened)
	    ::CloseResFile(nsComponentResourceContext::sCompResRefNum);
    __NSTerminate();
}

//****************************************************************************************
// nsComponentResourceContext
//****************************************************************************************

nsComponentResourceContext::nsComponentResourceContext() :
    mSavedResRefNum(kResFileNotOpened)
{
}

nsComponentResourceContext::~nsComponentResourceContext()
{
	if (mSavedResRefNum != kResFileNotOpened)
	    ::UseResFile(mSavedResRefNum);
}

Boolean nsComponentResourceContext::BecomeCurrent()
{
	if (sCompResRefNum == kResFileNotOpened)
    return false;
    
	mSavedResRefNum = ::CurResFile();
	::UseResFile(sCompResRefNum);
  return ::ResError() == noErr;
}