/*

* 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 "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:  gridlayoutmanager with focus handling in 1D (next/previous)

*

*/

#include <alf/alfgridlayoutmanager.h>

#include <alf/alfexceptions.h>

#include <alf/alfwidgetcontrol.h>

#include <osn/ustring.h>

#include <osn/osnnew.h>

#include "alfgridlayoutmanagerimpl.h"

#include "alfgridlayoutpolicyimpl.h"

using osncore::UString;

using namespace Alf;

namespace Alf

    {

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

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

// layout manager constructor

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

//

OSN_EXPORT AlfGridLayoutManager::AlfGridLayoutManager() 

    : AlfLayoutManager(EAlfLayoutTypeGrid)

    {

    mData.reset(new (EMM) AlfGridLayoutManagerImpl(*this));

    mDataPolicy.reset(new (EMM) AlfGridLayoutPolicyImpl(*this));

    }

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

// virtual destructor

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

//

OSN_EXPORT AlfGridLayoutManager::~AlfGridLayoutManager()

    {

    }

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

// from AlfLayoutManager

// notifies the layout manager, that the child control's layout

// must be updated.

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

//

OSN_EXPORT void AlfGridLayoutManager::updateChildLayout(

    CAlfWidgetControl* aControl)

    {

    CAlfLayout& layout = getLayout();

    doUpdateChildLayout(aControl);

    layout.UpdateChildrenLayout();

    //doUpdateChildLayout changes the visual size and position.

    //need to notify the widget that size and position has changed.

    //set the size and postion for aControl

    TAlfRealRect rect;

    if (controlRect(*aControl, rect)) //returns the real rect (of the root visual)

        {

        setControlRect(*aControl, rect);

        }

    // Inform parent layout manager about the changed presentation size

    owner().updateParentLayout();

    }

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

// from IAlfLayoutManager

// notifies the layout manager, that the control's has been

// removed from the layout.

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

//

OSN_EXPORT void AlfGridLayoutManager::childRemoved(CAlfWidgetControl* aControl)

    {

    //when control is removed from layout, no change to other widget rects,

    // just call the base class

    AlfLayoutManager::childRemoved(aControl);

    }

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

// from AlfLayoutManager

// notifies the layout manager, that the child control's layout

// must be updated.

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

//    

OSN_EXPORT void AlfGridLayoutManager::doUpdateChildLayout(

    CAlfWidgetControl* /*aControl*/)

    {

    //gridlayout changes the position and size, nothing to do here.

    }

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

// From class IAlfInterfaceBase.

// Getter for interfaces provided by the element.

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

//

OSN_EXPORT IAlfInterfaceBase* AlfGridLayoutManager::makeInterface( 

    const IfId& aType )

    {

    UString param(aType.mImplementationId);

    if (param == IAlfLayoutManager::type().mImplementationId)

        {

        return this;

        }      

    // Let the implementation class try the interface creation

    IAlfInterfaceBase* pInterface = mData->makeInterface(aType);

    if(!pInterface)

        pInterface = mDataPolicy->makeInterface(aType);

    return pInterface;

    }

 } // Alf