/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.carbide.remoteconnections.discovery.pccs.pccsnative;

import com.sun.jna.FromNativeContext;

import com.sun.jna.Pointer;

import com.sun.jna.PointerType;

public class DMHANDLE extends PointerType {

	// Constant value representing an invalid HANDLE.

    public static DMHANDLE INVALID_HANDLE_VALUE = new DMHANDLE(Pointer.createConstant(-1));

	private boolean immutable;

    public DMHANDLE() { }

    public DMHANDLE(Pointer p) { setPointer(p); immutable = true; }

    /** Override to the appropriate object for INVALID_HANDLE_VALUE. */

    public Object fromNative(Object nativeValue, FromNativeContext context) {

        Object o = super.fromNative(nativeValue, context);

        if (INVALID_HANDLE_VALUE.equals(o))

            return INVALID_HANDLE_VALUE;

        return o;

    }

    public void setPointer(Pointer p) {

        if (immutable)

            throw new UnsupportedOperationException("immutable reference"); //$NON-NLS-1$

        super.setPointer(p);

    }

}