/*

* Copyright (c) 2008 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:  Wallpaper view.

*

*/

// System includes

#include <eikbtgpc.h>

#include <avkon.rsg>

#include <MGFetch.h> 

#include <bautils.h>

#include <data_caging_path_literals.hrh>

// User includes

#include <xnwallpaperview.rsg>

#include "xnwallpaperview.h"

#include "xnwallpapercontainer.h"

#include "xnuiengine.h"

#include "xnappuiadapter.h"

#include "xnviewadapter.h"

#include "xnviewmanager.h"

#include "xneffectmanager.h"

#include "xnspbgcleaner.h"

// Constants

_LIT( KResourceDrive, "z:" );

_LIT( KResourceFile, "xnwallpaperview.rsc" );

_LIT8( KMulti, "multi" );

_LIT8( KSetWallpaper, "setwallpaper" );

const TInt KFileArrayGranularity( 6 );

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

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

// C++ default constructor.

//

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

//

CXnWallpaperView::CXnWallpaperView( CXnUiEngine& aEngine ) 

    : iEngine( aEngine ), iAppUi( iEngine.AppUiAdapter() )    

    {

    }

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

// Symbian 2nd phase constructor.

//

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

//

void CXnWallpaperView::ConstructL()

    {

    TFileName resFile;

    resFile.Append( KResourceDrive );

    resFile.Append( KDC_APP_RESOURCE_DIR );

    resFile.Append( KResourceFile );

    CCoeEnv* env( CCoeEnv::Static() );

    BaflUtils::NearestLanguageFile( env->FsSession(), resFile );

    iResourceOffset = env->AddResourceFileL( resFile );

    BaseConstructL( R_WALLPAPER_VIEW );

    TCallBack cb( HandleCallback, this );

    iAsyncCb = new ( ELeave ) CAsyncCallBack( cb, CActive::EPriorityHigh );

    iFiles = new ( ELeave ) CDesCArrayFlat( KFileArrayGranularity );                

    }

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

// Two-phased constructor.

//

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

//

CXnWallpaperView* CXnWallpaperView::NewL( CXnUiEngine& aEngine )

    {

    CXnWallpaperView* self = new (ELeave) CXnWallpaperView( aEngine );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Destructor.

//

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

//

CXnWallpaperView::~CXnWallpaperView()

    {        

    CCoeEnv::Static()->DeleteResourceFile( iResourceOffset );    

    if ( iFiles )

        {

        iFiles->Reset();

        }

    delete iFiles;    

    delete iContainer;

    delete iSpBgCleaner;

    delete iAsyncCb;

    }

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

// CXnWallpaperView::Id

//

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

//

TUid CXnWallpaperView::Id() const

    {

    return KWallpaperViewUid;

    }

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

// CXnWallpaperView::DoActivateL

//

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

//

void CXnWallpaperView::DoActivateL( const TVwsViewId& /*aPrevViewId*/,           

    TUid /*aCustomMessageId*/, const TDesC8& aCustomMessage )            

    {

    // switch layout 

    CEikStatusPane* sp( iAppUi.StatusPane() );

    // setup status pane layout

    sp->SwitchLayoutL( R_AVKON_STATUS_PANE_LAYOUT_USUAL_FLAT );

    // apply changes 

    sp->ApplyCurrentSettingsL();

    // disable transparancy

    sp->EnableTransparent( EFalse );

    // create background cleaner for sp

    if ( !iSpBgCleaner )

        {

        iSpBgCleaner = CXnSpBgCleaner::NewL();

        AppUi()->AddToStackL( *this, iSpBgCleaner );

        }

    // update sp

    iSpBgCleaner->DrawNow();

    sp->DrawNow();

    // update cba

    CEikButtonGroupContainer* bgc( Cba() );

    CEikCba* cba = static_cast< CEikCba* >( bgc->ButtonGroup() );

    if ( cba ) 

        {       

        bgc->SetBoundingRect( TRect() );

        cba->DrawNow();

        }

    if ( !iContainer )

        {

        iContainer = CXnWallpaperContainer::NewL();

        iAppUi.AddToStackL( *this, iContainer );

        iContainer->ActivateL();

        iContainer->DrawNow();

        }

    iAppUi.EffectManager()->EndFullscreenEffect( KGfxContextOpenWallpaperView );

    iMultiple = ( aCustomMessage == KMulti ) ? ETrue : EFalse;

    // Run image selection dialog asynchronously    

    iAsyncCb->CallBack();

    }

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

// CXnWallpaperView::DoDeactivate

//

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

//

void CXnWallpaperView::DoDeactivate()

    {       

    if ( iContainer )

        {

        iAppUi.RemoveFromStack( iContainer );

        delete iContainer;

        iContainer = NULL;

        }

    if ( iSpBgCleaner )

        {

        AppUi()->RemoveFromStack( iSpBgCleaner );

        delete iSpBgCleaner;

        iSpBgCleaner = NULL;

        }

    iAppUi.EffectManager()->EndFullscreenEffect( KGfxContextCloseWallpaperView );

    }

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

// CXnWallpaperView::SelectedWallpaper

//

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

//

void CXnWallpaperView::SelectedWallpaper( TFileName& aFileName ) const

    {

    aFileName.Copy( iFileName );       

    }

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

// CXnWallpaperView::HandleCallback

//

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

//

TInt CXnWallpaperView::HandleCallback( TAny* aAny )

    {       

    CXnWallpaperView* self = static_cast< CXnWallpaperView* >( aAny );

    TRAP_IGNORE( self->DoHandleCallbackL() );

    return KErrNone;

    }

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

// CXnWallpaperView::DoHandleCallbackL

//

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

//

void CXnWallpaperView::DoHandleCallbackL()

    {    

    // Reset 

    iFileName = KNullDesC();    

    iFiles->Reset();

    TBool selected( EFalse );

    TRAP_IGNORE( selected = 

        MGFetch::RunL( *iFiles, EImageFile, iMultiple ) ); 

    if ( selected && iFiles->MdcaCount() > 0 )                 

        {

        // Reset

        selected = EFalse;

        if( iFiles->MdcaCount() == 1 )

            {

            TPtrC fileName( iFiles->MdcaPoint( 0 ) );

            RFs& fs( CEikonEnv::Static()->FsSession() );

            if ( BaflUtils::FileExists( fs, fileName ) )

                {

                // Accept the selected file

                selected = ETrue;

                iFileName.Copy( fileName );

                }

            }

        iFiles->Reset();

        }       

    // Default view

    TVwsViewId xmlViewId( iAppUi.View().ViewId() );

    const TDesC8& param( selected ? KSetWallpaper() : KNullDesC8() );

    iAppUi.EffectManager()->BeginFullscreenEffectL( KGfxContextCloseWallpaperView );

    iAppUi.ActivateLocalViewL( xmlViewId.iViewUid, TUid(), param );                         

    }

//  End of File