/*

 * 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 <apgwgnam.h>

#include "tswindowgroupsobserver.h"

#include "tswindowgroupsmonitor.h"

#include "tsrunningappstorage.h"

const int KOrdinalPositionNoZOrder(-1);

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CTsWindowGroupsMonitor* CTsWindowGroupsMonitor::NewL(MTsResourceManager &resources)

{

    CTsWindowGroupsMonitor* self = new (ELeave) CTsWindowGroupsMonitor(resources);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

}

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CTsWindowGroupsMonitor::CTsWindowGroupsMonitor(MTsResourceManager &resources)

:

    CActive(EPriorityStandard),

    iResources(resources)

{

    CActiveScheduler::Add(this);

}

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//

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void CTsWindowGroupsMonitor::ConstructL()

{

    // Initial window group

    iWg = RWindowGroup (iResources.WsSession());

    User::LeaveIfError (iWg.Construct ((TUint32)&iWg, EFalse));

    iWg.SetOrdinalPosition (KOrdinalPositionNoZOrder);

    iWg.EnableReceiptOfFocus (EFalse);

    // Hide window

    CApaWindowGroupName* wn = CApaWindowGroupName::NewLC(iResources.WsSession());

    wn->SetHidden (ETrue);

    wn->SetWindowGroupName (iWg);

    CleanupStack::PopAndDestroy (wn);

    // Window group change event

    User::LeaveIfError (iWg.EnableGroupListChangeEvents());

    Subscribe();

}

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CTsWindowGroupsMonitor::~CTsWindowGroupsMonitor()

{

    CActive::Cancel();

    iWg.Close();

}

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void CTsWindowGroupsMonitor::SubscribeL(MTsWindowGroupsObserver &observer)

{

    const TInt offset(iObservers.Find(&observer));

    KErrNotFound == offset ? iObservers.InsertL(&observer, 0) : 

                             User::Leave(KErrAlreadyExists);

}

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void CTsWindowGroupsMonitor::Cancel(MTsWindowGroupsObserver & observer)

{

    const TInt offset(iObservers.Find(&observer));

    if (KErrNotFound != offset) {

        iObservers.Remove(offset);

    }

}

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void CTsWindowGroupsMonitor::RunL()

{

    User::LeaveIfError(iStatus.Int());

    ProvideEventL();

    Subscribe();

}

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void CTsWindowGroupsMonitor::DoCancel()

{

    if (IsActive()) {

        iResources.WsSession().EventReadyCancel();

    }

}

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TInt CTsWindowGroupsMonitor::RunError(TInt error)

{

    if (!IsActive() && KErrCancel != error) {

        Subscribe();

    }

    return KErrNone;

}

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void CTsWindowGroupsMonitor::Subscribe()

{

    iResources.WsSession().EventReady( &iStatus );

    SetActive();

}

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void CTsWindowGroupsMonitor::ProvideEventL()

{

    TWsEvent wsEvent;

    iResources.WsSession().GetEvent(wsEvent);

    if( EEventWindowGroupListChanged == wsEvent.Type() )

        {

        CTsRunningAppStorage *storage = CTsRunningAppStorage::NewLC();

        RArray<RWsSession::TWindowGroupChainInfo> filteredWgInfo, fullWgInfo;

        CleanupClosePushL(filteredWgInfo);

        CleanupClosePushL(fullWgInfo);

        User::LeaveIfError(iResources.WsSession().WindowGroupList(0, &filteredWgInfo));

        User::LeaveIfError(iResources.WsSession().WindowGroupList(&fullWgInfo));

        storage->HandleWindowGroupChanged(iResources, 

                                          fullWgInfo.Array(), 

                                          filteredWgInfo.Array());

        CleanupStack::PopAndDestroy( &fullWgInfo );

        CleanupStack::PopAndDestroy( &filteredWgInfo );

        for( TInt iter(0); iter < iObservers.Count(); ++iter ) 

            {

            iObservers[iter]->HandleWindowGroupChanged( iResources, *storage );

            }

        CleanupStack::PopAndDestroy( storage );

        }

}