/*

* Copyright (c) 2004-2005 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:  Implements the CLandmarksModel class

*

*/

#include <eikenv.h>

#include <gulicon.h>

#include <AknsUtils.h>

#include <AknsItemID.h>

#include <EPos_CPosLandmark.h>

#include <lmrefapp.mbg>

#include "LandmarksCommonData.h"

#include "LandmarksModel.h"

const TInt KDefaultIconIndex = 0;

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

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

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

//

CLandmarksModel::CLandmarksModel()

	{

	}

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

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

//

void CLandmarksModel::ConstructL()

	{

	// The list box model uses MDesCArray interface class to take in text items.

	iListItems = new (ELeave) CDesCArraySeg(KGranularity);

	}

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

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

//

CLandmarksModel* CLandmarksModel::NewL()

    {

    CLandmarksModel* self = new (ELeave) CLandmarksModel();

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

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

//

CLandmarksModel::~CLandmarksModel()

	{

	delete iListItems;

	}

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

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

//

void CLandmarksModel::SetItemIds(RArray<TPosLmItemId>* aItemIds)

    {

    iItemIds = aItemIds;

    // Empty descriptor model

    iListItems->Reset();

    }

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

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

//

CDesCArraySeg* CLandmarksModel::ItemList()

    {

    return iListItems;

    }

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

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

//

void CLandmarksModel::SetCurrentItem(TInt aIndex) 

    {

    iCurrentItem = aIndex;

    }

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

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

//

TPosLmItemId CLandmarksModel::CurrentItemId()

    {

    if (!iItemIds || iCurrentItem < 0 || 

        iCurrentItem > iItemIds->Count() - 1)

        {

        return KPosLmNullItemId;

        }

    return (*iItemIds)[iCurrentItem];

    }

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

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

//

void CLandmarksModel::GetItemIdsL( 

    const CArrayFix<TInt>& aSelectionIndexes,

    RArray<TPosLmItemId>& aItemIds )

    {

    aItemIds.Reset();

    if ( iItemIds )

        {

        for ( TInt i = 0; i < aSelectionIndexes.Count(); i++ )

            {

            if ( i < iItemIds->Count() )

                {

                aItemIds.AppendL( (*iItemIds)[aSelectionIndexes[i]] );

                }

            else

                {

                break;

                }

            }

        }

    }

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

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

//

CIconList* CLandmarksModel::CreateIconListL()

    {

    CIconList* iconList = 

        (CIconList*) new (ELeave) CArrayPtrFlat<CGulIcon>(KGranularity);

    CleanupStack::PushL(iconList);

    // Create the default landmark icon consisting of its image and mask

    TAknsItemID aknsItemId = {0,0};

    CGulIcon* icon = AknsUtils::CreateGulIconL(NULL, aknsItemId,

        KLandmarksMbmFileName, 

        EMbmLmrefappDefault_lm, 

        EMbmLmrefappDefault_lm_mask);

    CleanupStack::PushL(icon);

    icon->SetBitmapsOwnedExternally(EFalse);

    iconList->AppendL(icon);

    CleanupStack::Pop(2, iconList);

    // initialze iIconList. We don't need to delete any possible previous 

    // iIconList since ownership is transferred to calling object.

    iIconList = iconList;

    return iIconList;

    }

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

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

//

void CLandmarksModel::RepopulateModelL(

    CArrayPtr<CPosLandmark>* aLandmarks)

    {

    TInt nrOfReadItems = aLandmarks->Count();

    // Format and insert the read landmarks

    for (TInt i = 0; i < nrOfReadItems; i++)

        {

        CPosLandmark* landmark = (*aLandmarks)[i];

        HBufC* formattedListItem = FormatListItemLC(*landmark);

        iListItems->AppendL(*formattedListItem);

        CleanupStack::PopAndDestroy(formattedListItem);

        }

    }

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

// Formats a list item to the following format "X\tlandmarkName\t"

// where X = icon index

// (other items were commented in a header).

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

//

HBufC* CLandmarksModel::FormatListItemLC(CPosLandmark& aLandmark)

    {

    // Extract name

    TPtrC name;

    aLandmark.GetLandmarkName(name);

    // 10 extra chars for icon index and column separator

    const TInt KExtraChars = 10;

    HBufC* formattedNameBuf = HBufC::NewLC(name.Length() + KExtraChars);

    TPtr formattedNamePtr = formattedNameBuf->Des();

    // Extract icon info

    TPtrC mbmIconFile;

    TInt iconIndex, maskIndex;

    TInt res = aLandmark.GetIcon(mbmIconFile, iconIndex, maskIndex);

    // Format list item

    if (res == KErrNone)

        {

        // Create icon and append it to icon array. 

        TRAPD(err, AppendIconL(mbmIconFile, iconIndex, maskIndex));

        if (err == KErrNone)

            {

            // Append the array index where the icon is appended

            formattedNamePtr.AppendNum(iIconList->Count() - 1);

            }

        else

            {

            formattedNamePtr.AppendNum(KDefaultIconIndex);

            }

        }

    else // res == KErrNotFound

        {

        formattedNamePtr.AppendNum(KDefaultIconIndex);

        }

    formattedNamePtr.Append(KTab);

    formattedNamePtr.Append(name);

    return formattedNameBuf;

    }

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

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

//

void CLandmarksModel::AppendIconL(

    const TDesC& aMbmFile, 

    TInt aIconOffset, 

    TInt aMaskOffset)

    {

    TAknsItemID aknsItemId = {0,0};

    CGulIcon* icon = AknsUtils::CreateGulIconL(NULL, aknsItemId,

        aMbmFile, 

        aIconOffset, 

        aMaskOffset);

    CleanupStack::PushL(icon);

    icon->SetBitmapsOwnedExternally(EFalse);

    iIconList->AppendL(icon);

    CleanupStack::Pop(icon);

    }