/*

* Copyright (c) 2007 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:  

*

*/

#include <calchangecallback.h>

#include <calsession.h>

#include "Calendarheader.h"

#include "Calendarnotify.h"

#include "asyncreqobserver.h"

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

// two-phased constructor

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

CCalendarObserver* CCalendarObserver::NewL( CCalendarSessionInfo* aSessionInfo,

												CCalendarFilter* aFilter,

												CAsyncRequestObserver* aAsyncRequestObserver,

												MCalCallbackBase* aNotifyCallback )

	{

	CCalendarObserver* self = new(ELeave) CCalendarObserver( aSessionInfo, aAsyncRequestObserver, aNotifyCallback );

	CleanupStack::PushL( self );

	self->ConstructL( aFilter );

	CleanupStack::Pop( self );

	return self;

	}

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

// destructor

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

CCalendarObserver::~CCalendarObserver()

	{

	delete iFilter;

	if ( iSession )

		{

		iSession->StopChangeNotification();

		delete iSession;

		}

	}

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

// default constructor

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

CCalendarObserver::CCalendarObserver( CCalendarSessionInfo* aSessionInfo, 

										CAsyncRequestObserver* aAsyncRequestObserver,

										MCalCallbackBase* aNotifyCallback ) :

//						CActive( EPriorityStandard ),

						iSessionInfo( aSessionInfo ),

						iNotifyCallback( aNotifyCallback ),

						iAsyncRequestObserver( aAsyncRequestObserver ),

						iIsInProgress(EFalse)

	{

	CActiveScheduler::Add( this ); 

	}

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

// second phase constructor

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

void CCalendarObserver::ConstructL( CCalendarFilter* aFilter )

	{

	iFilter = CCalendarFilter::NewL();

	*iFilter = *aFilter;

	}

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

// Initiates the Notification process

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

void CCalendarObserver::StartChangeNotificationL()

	{

	iSession = CCalSession::NewL();

	iSession->OpenL( iSessionInfo->Calendar() );

	TBool includeUndateToDo = ( iFilter->Filter() & EFlagUnDateToDo );

	CalCommon::TCalTimeRange range =  iFilter->TimeRange();

	if( range.EndTime().TimeLocalL() != Time::NullTTime() && 

		range.StartTime().TimeLocalL() != Time::NullTTime() )

		{

		if( range.EndTime().TimeLocalL() < range.StartTime().TimeLocalL() )

			User::Leave( KErrArgument );

		}

	// Create notification filter object specifying that notification for all entry types is required

	CCalChangeNotificationFilter* filter = CCalChangeNotificationFilter::NewL( MCalChangeCallBack2::EChangeEntryAll, 

													includeUndateToDo, 

													iFilter->TimeRange() );

	iSession->StartChangeNotification( *this, *filter );

	delete filter;

	ActivateRequest( KErrNone );

	}

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

// MCalChangeCallBack2::CalChangeNotification

// Indicates the event of arrival of change in calendar.

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

void CCalendarObserver::CalChangeNotification(RArray< TCalChangeEntry > &aChangeItems)

	{

	iIsInProgress = ETrue;

	if ( iFilter->Filter() & EFilterLUid )

		{

		RArray< TCalChangeEntry > filteredItems;

		TInt count = aChangeItems.Count();

		TInt uidCount = iFilter->LocalUidList().Count();

		for ( TInt index = 0; index < count; index++ )

			{

			for ( TInt i = 0; i < uidCount; i++ )

				{

				// Filter only those entries having local uids specified

				if ( aChangeItems[index].iEntryId ==  iFilter->LocalUidList()[i] )

					{

					filteredItems.Append( aChangeItems[index] );

					break;

					}

				}

			}

		// Notify the user of the changed entries

		TRAPD(err, iNotifyCallback->NotifyResultL( KErrNone, (TAny*)(&filteredItems) ));

		filteredItems.Reset();

		}

	else

		{

		TRAPD(err, iNotifyCallback->NotifyResultL( KErrNone, (TAny*)(&aChangeItems) ));

		}

	iIsInProgress = EFalse;	

	}		

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

// Inherited from CActive class 

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

//

void CCalendarObserver::DoCancel()

	{

	TRequestStatus* temp = &iStatus;

	User::RequestComplete( temp, KErrCancel );

	// Stop the notificaton operation

	iSession->StopChangeNotification();

	iAsyncRequestObserver->RequestComplete( iNotifyCallback->iTransactionId );

	TRAPD( err, iNotifyCallback->NotifyResultL( KErrCancel, NULL ));

	}

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

// Inherited from CActive class 

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

//

void CCalendarObserver::RunL()

	{

	}

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

// Activates the asynchronous request

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

//

void CCalendarObserver::ActivateRequest( TInt /*aReason*/ )

	{

	iStatus = KRequestPending;

	SetActive();

	}

TBool CCalendarObserver::IsInProgress()

	{

	return iIsInProgress;

	}