/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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: 

*             This class watches for changes to the ECOM registry

*             and forces a recheck of Meeting request availablity

*

*/

// ----------------------------------------------------------------------------

// INCLUDE FILES

// ----------------------------------------------------------------------------

//

#include "CalenEcomWatcher.h"

#include "CalenInterimUtils2Impl.h"

#include "calenecomchangeobserver.h"

//debug

#include "calendarengines_debug.h"

// -----------------------------------------------------------------------------

// CCalenEComWatcher::NewL()

// Creates and returns a new CCalenEComWatcher object.

// -----------------------------------------------------------------------------

EXPORT_C CCalenEComWatcher* CCalenEComWatcher::NewL( MCalenEComChangeObserver& aObserver )

    {

    TRACE_ENTRY_POINT;

    CCalenEComWatcher* self = new(ELeave) CCalenEComWatcher( aObserver );

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    TRACE_EXIT_POINT;

    return self;

    }

// -----------------------------------------------------------------------------

// CCalenEComWatcher::CCalenEcomWatcher()

// Default constructor

// -----------------------------------------------------------------------------

CCalenEComWatcher::CCalenEComWatcher( MCalenEComChangeObserver& aObserver )

    : CActive(EPriorityNormal), iEComObserver( aObserver )

    {

    TRACE_ENTRY_POINT;

    TRACE_EXIT_POINT;

    }

// -----------------------------------------------------------------------------

// CCalenEComWatcher::ConstructL()

// Second phase construction.  Opens the ecom session and requests notifications

// -----------------------------------------------------------------------------

void CCalenEComWatcher::ConstructL()

    {

    TRACE_ENTRY_POINT;

    iSession = REComSession::OpenL();

    iSession.NotifyOnChange(iStatus);

    CActiveScheduler::Add(this);

    SetActive();

    TRACE_EXIT_POINT;

    }

// -----------------------------------------------------------------------------

// CCalenEComWatcher::~CCalenEComWatcher()

// Destructor

// -----------------------------------------------------------------------------

CCalenEComWatcher::~CCalenEComWatcher()

    {

    TRACE_ENTRY_POINT;

    Cancel();

    iSession.Close();

    REComSession::FinalClose();

    TRACE_EXIT_POINT;

    }

// -----------------------------------------------------------------------------

// CCalenEComWatcher::RunL()

// From CActive

// Called whenever a change to the Ecom registry occurs

// -----------------------------------------------------------------------------

void CCalenEComWatcher::RunL()

    {

    TRACE_ENTRY_POINT;

    // Force a recheck of meeting request availability. Ignore the return value.

    iEComObserver.EComChanged();

    iSession.NotifyOnChange(iStatus);

    SetActive();

    TRACE_EXIT_POINT;

    }

// -----------------------------------------------------------------------------

// CCalenEComWatcher::RunError()

// From CActive

// This is a simple watcher class.  If RunL leaves then meeting request support 

// will be disabled anyway, at least until the next ecom notification occurs.  

// If we can't even retrieve a list of mailboxes without leaving we've got no 

// chance of displaying the viewers correctly.

// Swallow the error.

// -----------------------------------------------------------------------------

TInt CCalenEComWatcher::RunError()

    {

    TRACE_ENTRY_POINT;

    iSession.NotifyOnChange(iStatus);

    SetActive();

    TRACE_EXIT_POINT;

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CCalenEComWatcher::DoCancel()

// From CActive

// Stop watching the ecom session

// -----------------------------------------------------------------------------

void CCalenEComWatcher::DoCancel()

    {

    TRACE_ENTRY_POINT;

    iSession.CancelNotifyOnChange(iStatus);

    TRACE_EXIT_POINT;

    }

// End of file