/** @file
 *
 * VirtualBox COM class implementation
 */

/*
 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 USA or visit http://www.sun.com if you need
 * additional information or have any questions.
 */

#include "HardDiskAttachmentImpl.h"

#include "Logging.h"

// constructor / destructor
/////////////////////////////////////////////////////////////////////////////

HRESULT HardDiskAttachment::FinalConstruct()
{
    return S_OK;
}

void HardDiskAttachment::FinalRelease()
{
    uninit();
}

// public initializer/uninitializer for internal purposes only
/////////////////////////////////////////////////////////////////////////////

/**
 * Initializes the hard disk attachment object.
 *
 * @param aHD       Hard disk object.
 * @param aController Controller the hard disk is attached to.
 * @param aPort       Port number.
 * @param aDevice     Device number on the port.
 * @param aImplicit   Wether the attachment contains an implicitly created diff.
 */
HRESULT HardDiskAttachment::init(HardDisk *aHD, IN_BSTR aController, LONG aPort,
                                 LONG aDevice, bool aImplicit /*= false*/)
{
    AssertReturn (aHD, E_INVALIDARG);

    /* Enclose the state transition NotReady->InInit->Ready */
    AutoInitSpan autoInitSpan (this);
    AssertReturn (autoInitSpan.isOk(), E_FAIL);

    m.hardDisk = aHD;
    unconst (m.controller) = aController;
    unconst (m.port)   = aPort;
    unconst (m.device) = aDevice;

    m.implicit = aImplicit;

    /* Confirm a successful initialization when it's the case */
    autoInitSpan.setSucceeded();

    return S_OK;
}

/**
 * Uninitializes the instance.
 * Called from FinalRelease().
 */
void HardDiskAttachment::uninit()
{
    /* Enclose the state transition Ready->InUninit->NotReady */
    AutoUninitSpan autoUninitSpan (this);
    if (autoUninitSpan.uninitDone())
        return;
}

// IHardDiskAttachment properties
/////////////////////////////////////////////////////////////////////////////

STDMETHODIMP HardDiskAttachment::COMGETTER(HardDisk) (IHardDisk **aHardDisk)
{
    CheckComArgOutPointerValid(aHardDisk);

    AutoCaller autoCaller (this);
    CheckComRCReturnRC (autoCaller.rc());

    AutoReadLock alock (this);

    m.hardDisk.queryInterfaceTo (aHardDisk);

    return S_OK;
}

STDMETHODIMP HardDiskAttachment::COMGETTER(Controller) (BSTR *aController)
{
    CheckComArgOutPointerValid(aController);

    AutoCaller autoCaller (this);
    CheckComRCReturnRC (autoCaller.rc());

    /* m.controller is constant during life time, no need to lock */
    m.controller.cloneTo(aController);

    return S_OK;
}

STDMETHODIMP HardDiskAttachment::COMGETTER(Port) (LONG *aPort)
{
    CheckComArgOutPointerValid(aPort);

    AutoCaller autoCaller (this);
    CheckComRCReturnRC (autoCaller.rc());

    /* m.port is constant during life time, no need to lock */
    *aPort = m.port;

    return S_OK;
}

STDMETHODIMP HardDiskAttachment::COMGETTER(Device) (LONG *aDevice)
{
    CheckComArgOutPointerValid(aDevice);

    AutoCaller autoCaller (this);
    CheckComRCReturnRC (autoCaller.rc());

    /* m.device is constant during life time, no need to lock */
    *aDevice = m.device;

    return S_OK;
}
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