/*

* Copyright (c) 2002 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: 

*       Phonebook view navigation implementation.

*

*/

//  INCLUDES

#include "CPbkViewNavigator.h"

#include <AknTabObserver.h>

#include <aknnavi.h>

#include <aknnavide.h>

#include <akntabgrp.h>

#include <CPbkAppUiBase.h>

#include <CPbkAppViewBase.h>

/// Unnamed namespace for local definitions

namespace {

// LOCAL FUNCTIONS

CAknTabGroup* GetTabGroupOnTop(CAknNavigationControlContainer* aNaviPane)

    {

    CAknTabGroup* result = NULL;

    if (aNaviPane)

        {

        CAknNavigationDecorator* topDecorator = aNaviPane->Top();

        if (topDecorator && 

            topDecorator->ControlType() == CAknNavigationDecorator::ETabGroup)

            {

            result = static_cast<CAknTabGroup*>(topDecorator->DecoratedControl());

            }

        }

    return result;

    }

}  // namespace

// CLASS DECLARATION

/**

 * Phonebook view navigation implementation.

 */

class CPbkViewNavigatorImpl : 

        public CPbkViewNavigator,

        private MAknTabObserver

    {

    public:  // Constructors and destructor

        CPbkViewNavigatorImpl

            (const CDigViewGraph& aViewGraph, CPbkAppUiBase& aAppUi);

        void ConstructL();

    public:  // from CPbkViewNavigator

        TBool HandleNavigationKeyEventL

            (const TKeyEvent& aKeyEvent, TEventCode aType);

        CAknNavigationDecorator* CreateTabGroupL(TResourceReader& aResReader);

    private:  // from MAknTabObserver

		void TabChangedL(TInt aIndex);

    };

// ================= MEMBER FUNCTIONS =======================

inline CPbkViewNavigatorImpl::CPbkViewNavigatorImpl

        (const CDigViewGraph& aViewGraph, CPbkAppUiBase& aAppUi) :

    CPbkViewNavigator(aViewGraph, aAppUi)

    {

    }

inline void CPbkViewNavigatorImpl::ConstructL()

    {

    BaseConstructL();

    }

CPbkViewNavigator* CPbkViewNavigator::NewL

        (const CDigViewGraph& aViewGraph,

        CPbkAppUiBase& aAppUi)

    {

    CPbkViewNavigatorImpl* self = 

        new(ELeave) CPbkViewNavigatorImpl(aViewGraph, aAppUi);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

CAknNavigationDecorator* CPbkViewNavigatorImpl::CreateTabGroupL

        (TResourceReader& aResReader)

    {

    // Create tab group and register self as an observer to it

    return iNaviPane->CreateTabGroupL(aResReader,this);

    }

TBool CPbkViewNavigatorImpl::HandleNavigationKeyEventL

        (const TKeyEvent& aKeyEvent, TEventCode aType)

    {

    TBool result = EFalse;

    CAknTabGroup* topTabGroup = GetTabGroupOnTop(iNaviPane);

    if (topTabGroup)

        {

        result = topTabGroup->OfferKeyEventL(aKeyEvent, aType)==EKeyWasConsumed;

        }

    return result;

    }

void CPbkViewNavigatorImpl::TabChangedL(TInt aIndex)

    {

    CAknTabGroup* topTabGroup = GetTabGroupOnTop(iNaviPane);

    if (topTabGroup)

        {

        // View ID is stored in the tab

        const TInt viewId(topTabGroup->TabIdFromIndex(aIndex));

        // Get current view's state and use it as a parameter to the next view

        CPbkViewState* activeViewState = iAppUi.ActiveView()->GetViewStateLC();

        iAppUi.ActivatePhonebookViewL(TUid::Uid(viewId), activeViewState);

        if (activeViewState)

            {

            CleanupStack::PopAndDestroy(activeViewState);

            }

        }

    }

// End of File