1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "cactivewaiter.h"

    17 

    18 CActiveWaiter::CActiveWaiter()

    19 	: CActive(CActive::EPriorityStandard)

    20 	{

    21 	CActiveScheduler::Add(this);

    22 	}

    23 	

    24 CActiveWaiter::~CActiveWaiter()

    25 	{ Cancel(); }

    26 

    27 void CActiveWaiter::WaitActive()

    28 	{ 

    29 	ASSERT(!iScheduler.IsStarted());

    30 	SetActive();

    31 	

    32 	iScheduler.Start();

    33 	}

    34 

    35 /**

    36 Sets the active scheduler active and immidiately Cancels, calling the 

    37 supplied cancel observer during DoCancel();

    38 @param aCancelObserver performs and DoCancel() operations on behalf of this object

    39 */

    40 void CActiveWaiter::SetActiveAndCancel(MActiveWaiterObserver& aCancelObserver)

    41 	{

    42 	ASSERT(!iScheduler.IsStarted());

    43 	ASSERT(iCancelObserver == NULL);

    44 	SetActive();

    45 	

    46 	iCancelObserver = &aCancelObserver;

    47 	

    48 	Cancel();

    49 	}

    50 

    51 /**

    52 Cancels the current operation, and stops the active scheduler loop,

    53 allowing a previous call to WaitActive() to return.

    54 @param aCancelObserver performs and DoCancel() operations on behalf of this object

    55 */

    56 void CActiveWaiter::CancelWaitActive(MActiveWaiterObserver& aCancelObserver)

    57 	{ 

    58 	ASSERT(iScheduler.IsStarted());

    59 	ASSERT(iCancelObserver == NULL);

    60 		

    61 	iCancelObserver = &aCancelObserver;

    62 	

    63 	Cancel();

    64 	

    65 	ASSERT(iScheduler.CanStopNow());

    66 	iScheduler.AsyncStop();

    67 	}

    68 

    69 void CActiveWaiter::RunL()

    70 	{

    71 	if (iScheduler.IsStarted())

    72 		{

    73 		ASSERT(iScheduler.CanStopNow());

    74 		iScheduler.AsyncStop();

    75 		}

    76 	}

    77 

    78 void CActiveWaiter::DoCancel()

    79 	{

    80 	ASSERT(iCancelObserver != NULL);

    81 	

    82 	iCancelObserver->DoCancel();

    83 	iCancelObserver = NULL;

    84 	}