/*

* 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 <aknappui.h>

#include <eikapp.h>

#include <eikbtgpc.h>

#include <avkon.rsg>

#include <AknsWallpaperUtils.h>

#include <MGFetch.h>

#include <aknnotewrappers.h>

#include <StringLoader.h> 

#include <caf/caf.h>

#include <bautils.h>

#include <AknWaitDialog.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 "xnbackgroundmanager.h"

#include "xneffectmanager.h"

#include "xnviewmanager.h"

#include "xnspbgcleaner.h"

// Constants

_LIT( KResourceDrive, "z:" );

_LIT( KResourceFile, "xnwallpaperview.rsc" );

_LIT8( KMulti, "multi" );

const TInt KFileArrayGranularity( 6 );

const TInt KShortDelay = 1000;

const TInt KLongDelay = 1000 * 1000;

// ============================ 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 );

    iTimer = CPeriodic::NewL( CActive::EPriorityIdle );

    iViewState = EIdle;

    }

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

// 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()

    {

    if ( iWaitDialog )

        {

        TRAP_IGNORE( iWaitDialog->ProcessFinishedL(); );

        }

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

    delete iContainer;

    delete iXnSpBgCleaner;

    delete iTimer;

    }

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

// 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 ( !iXnSpBgCleaner )

        {

        iXnSpBgCleaner = CXnSpBgCleaner::NewL();

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

        }

    // update sp

    iXnSpBgCleaner->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();

        }

    iPreviousViewUid = aPrevViewId;

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

    iAppUi.EffectManager()->UiRendered();

    iWaitDialog = NULL;

    iViewState = EImageSelection;

    // Run image selection dialog asynchronously

    iTimer->Cancel();

    iTimer->Start( KShortDelay, KLongDelay, TCallBack( TimerCallback, this ) );

    }

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

// CXnWallpaperView::DoActivateL

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

//

void CXnWallpaperView::DoDeactivate()

    {

    iTimer->Cancel(); // cancel timer

    if ( iWaitDialog )

        {

        TRAP_IGNORE( iWaitDialog->ProcessFinishedL(); );

        }

    if ( iContainer )

        {

        iAppUi.RemoveFromStack( iContainer );

        delete iContainer;

        iContainer = NULL;

        }

    if ( iXnSpBgCleaner )

        {

        AppUi()->RemoveFromStack( iXnSpBgCleaner );

        delete iXnSpBgCleaner;

        iXnSpBgCleaner = NULL;

        }

    iViewState = EIdle;

    iAppUi.EffectManager()->UiRendered();

    }

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

// CXnWallpaperView::TimerCallback

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

//

TInt CXnWallpaperView::TimerCallback( TAny *aPtr )

    {       

    CXnWallpaperView* self = reinterpret_cast< CXnWallpaperView* >( aPtr );

    TRAPD( err, self->DoHandleCallBackL(); );    

    if ( KErrNone != err )

        {

        // activate default view in case of any error

        TVwsViewId defaultView;

        if ( self->iAppUi.GetDefaultViewId( defaultView ) != KErrNone )

            {

            // use default if we got wrong viewid as previous view

            defaultView.iAppUid = self->iAppUi.Application()->AppDllUid();

            defaultView.iViewUid = TUid::Uid( 1 );

            }        

        // try activating default view

        TRAP_IGNORE( self->iAppUi.ActivateViewL( defaultView ); );

        }

    return KErrNone;

    }

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

// CXnWallpaperView::DoHandleCallBackL

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

//

void CXnWallpaperView::DoHandleCallBackL()

    {

    iTimer->Cancel();

    if ( iViewState == EImageSelection )

        {

        CDesCArrayFlat* files = 

                new (ELeave) CDesCArrayFlat( KFileArrayGranularity );    

        CleanupStack::PushL( files );

        TInt err( KErrNone );

        TBool selected( EFalse );

        CXnBackgroundManager& bg( iAppUi.ViewAdapter().BgManager() );

        selected = MGFetch::RunL( *files, EImageFile, iMultiple );

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

            {

            // set wallpaper

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

                {

                TFileName fileName( files->MdcaPoint( 0 ) );

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

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

                    {

                    // if wallpaper adding will take more than 1,5 sec waitdlg will appear

                    iWaitDialog = new( ELeave ) CAknWaitDialog(

                            reinterpret_cast<CEikDialog**>( &iWaitDialog ), EFalse );

                    iWaitDialog->ExecuteLD( R_CHANGE_WALLPAPER_WAIT_DIALOG );

                    // add wallpaper

                    err = bg.AddWallpaperL( fileName );

                    // notify waitdlg we're done.     

                    iWaitDialog->ProcessFinishedL();

                    // ProcessFinishedL() will NULL iWaitDialog

                    }

                }

            }

        CleanupStack::PopAndDestroy( files );

        if( err == KErrTooBig || err == KErrNoMemory )

            {

            ShowErrorDialogL( R_QTN_HS_TOO_BIG_IMAGE_NOTE );

            }

        else if( err == KErrCancel || err == KErrCouldNotConnect )

            {

            // Ignore these.

            }

        else if( err != KErrNone )

            {

            ShowErrorDialogL( R_QTN_HS_CORRUPTED_IMAGE_NOTE );        

            }

        // restart timer to deactivate view. View activation fails if

        // any dialog was shown just before calling iAppUi.ActivateViewL

        // specially when theme effects are on.

        iViewState = EViewDeactivation;

        iTimer->Start( KLongDelay, KLongDelay, TCallBack( TimerCallback, this ) );

        }

    else if ( iViewState == EViewDeactivation )

        {        

        iAppUi.EffectManager()->BeginFullscreenEffectL( 

                                    KGfxContextCloseWallpaperView, 

                                    iAppUi.ViewManager().ActiveViewData() );

        iAppUi.ActivateViewL( iPreviousViewUid );

        }

    else

        {

        iViewState = EIdle;

        User::Leave( KErrUnknown );

        }

    }

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

// CXnWallpaperView::ShowErrorDialogL

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

//

void CXnWallpaperView::ShowErrorDialogL( const TInt aResourceId )

    {

    //load message text

    HBufC* msg = StringLoader::LoadLC( aResourceId );

    //ensure that dialog will not disappear immediatelly - by const. param

    CAknErrorNote* dialog = new (ELeave) CAknErrorNote( true );

    CleanupStack::PushL( dialog );

    //show dialog to user and destroy it

    dialog->ExecuteLD( *msg );

    CleanupStack::Pop( dialog );

    CleanupStack::PopAndDestroy( msg );

    }

//  End of File