/*

* Copyright (c) 2009 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:

*

*/

#include <s32mem.h>

#include "tswindowgroupsmonitor.h"

#include "tsrunningapp.h"

#include "tsrunningappstorage.h"

#include "tsscreenshotprovider.h"

#include "tstaskmonitorglobals.h"

#include "tsscreenshotmsg.h"

#include "tsidlist.h"

const TUid KPluginUID = {0x200267AE};

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

CTsScreenshotProvider* CTsScreenshotProvider::NewL( MTsDataStorage& aStorage,

                                                    MTsWindowGroupsMonitor& aMonitor)

    {

    CTsScreenshotProvider *self = new (ELeave)CTsScreenshotProvider(aStorage, aMonitor);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

CTsScreenshotProvider::CTsScreenshotProvider( MTsDataStorage& aStorage,

                                              MTsWindowGroupsMonitor& aMonitor)

:

    iStorage(aStorage),

    iMonitor(aMonitor)

    {

    //No implementation required

    }

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

void CTsScreenshotProvider::ConstructL()

    {

    BaseConstructL(KPluginUID, KNullDesC8);

    iCache = CTsIdList::NewL();

    iMonitor.SubscribeL(*this);

    }

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

CTsScreenshotProvider::~CTsScreenshotProvider()

    {

    iMonitor.Cancel(*this);

    delete iCache;

    }

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

void CTsScreenshotProvider::HandleWindowGroupChanged(

                                  MTsResourceManager &aResources, 

                                  const MTsRunningApplicationStorage& aStorage)

    {

    TRAP_IGNORE(HandleWindowGroupChangedL(aResources, aStorage);)

    }

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

/**

 * Retrieve list of applications that shouldn't be displayed in taskswitcher 

 * and send it to module responsible for screenshot taking.  

 * Interface implementation.

 * @see MTsWindowGroupsObserver::HandleWindowGroupChangedL

 */

void CTsScreenshotProvider::HandleWindowGroupChangedL(

                                   const MTsRunningApplicationStorage& aStorage)

    {

    CTsIdList* list = CTsIdList::NewLC();

    for( TInt allowed(0); allowed < aStorage.Count(); ++allowed )

        {

            {

            }

        }

    if( *iCache != *list )

        {

        }

    delete iCache;

    iCache = list;

    CleanupStack::Pop(list);

    }

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

void CTsScreenshotProvider::HandleMessage( const TDesC8& aMsg )

    {

    TRAP_IGNORE( HandleMessageL( aMsg ) );

    }

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

void CTsScreenshotProvider::HandleMessageL( const TDesC8& aMsg )

    {

    RDesReadStream msgStream( aMsg );

    CleanupClosePushL( msgStream );

    switch ( msgStream.ReadInt32L() ) 

        {

        case RegisterScreenshotMessage:

            {

            //parse msg to ACK provider ASAP and be sure that bitmap still exists

            CTsScreenshotMsg* screenshotMsg = CTsScreenshotMsg::NewLC(msgStream); 

            SendMessage(aMsg);

            //reset stream

            msgStream.Close();

            msgStream.Open(aMsg);

            //forward stream to storage

            iStorage.HandleDataL(msgStream.ReadInt32L(), msgStream);

            CleanupStack::PopAndDestroy(screenshotMsg);

            break;

            }

        case WindowGroupToBackgroundMessage:

            {

            //reset stream

            msgStream.Close();

            msgStream.Open(aMsg);

            //forward stream to storage

            iStorage.HandleDataL(msgStream.ReadInt32L(), msgStream);

            break;

            }

        default: User::Leave(KErrNotSupported);

        }

    CleanupStack::PopAndDestroy(&msgStream);

    }

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

//

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

//

void CTsScreenshotProvider::OnReplace()

    {

    //No implementation required

    }