/*

* Copyright (c) 2005-2007 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:  Screen saver view.

*

*/

// INCLUDE FILES

// RProperty keys.

#include <e32cmn.h>

#include <e32def.h>

// Central repository.

#include <centralrepository.h>

#include <cenrepnotifyhandler.h>

// AVKON services.

#include <AknWaitDialog.h>

#include <aknnotewrappers.h>

#include <avkon.hrh>

#include <StringLoader.h>

#include <eikmenup.h>

// Power save mode setting

#include <psmsettings.h>

// Psln specific.

#include <psln.rsg>

#include "PslnModel.h"

#include "PslnScreenSaverView.h"

#include "PslnScreenSaverContainer.h"

#include "PslnConst.h"

#include "PslnUi.h"

// CONSTANTS

// Number of default system screensavers.

const TInt KPslnSystemScreenSavers = 2;

// Value in PubSub when screensaver preview is off.

const TInt KPslnScreenSaverPreviewOff = 0;

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

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

// C++ default constructor can NOT contain any code, that might leave.

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

//

CPslnScreenSaverView::CPslnScreenSaverView()

    {

    }

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

// Symbian 2nd phase constructor can leave.

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

//

void CPslnScreenSaverView::ConstructL()

    {

    BaseConstructL( R_PSLN_SCREENSAVER_VIEW );

    iNaviPaneContext = iPslnUi->PslnTabGroup();

    iScreenSaverRepository = NULL;

    iScreenSaverNotifier = CCenRepNotifyHandler::NewL(

        *this,

        *iScreenSaverRepository,

        CCenRepNotifyHandler::EIntKey,

        NULL );

    // Load screensavers.

    iModel->LoadScreensaverArrayL();

    }

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

// Two-phased constructor.

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

//

CPslnScreenSaverView* CPslnScreenSaverView::NewLC()

    {

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

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// Destructor

CPslnScreenSaverView::~CPslnScreenSaverView()

    {

    if ( iPreviewModeSubscriber )

        {

        iPreviewModeSubscriber->Cancel();

        }

    iPreviewModeProperty.Close();

    delete iPreviewModeSubscriber;

    if ( iPreviewStateSubscriber )

        {

        iPreviewStateSubscriber->Cancel();

        }

    iPreviewStateProperty.Close();

    delete iPreviewStateSubscriber;

    if(iPsmClient)

    	{

    	iPsmClient->CancelPowerSaveModeNotificationRequest();

    	delete iPsmClient;

    	}

    if ( iWaitDlg )

        {

        delete iWaitDlg;

        }

    if ( iScreenSaverNotifier->IsActive() )

        {

        iScreenSaverNotifier->StopListening();

        }

    delete iScreenSaverNotifier;

    delete iScreenSaverRepository;

    }

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

// CPslnScreenSaverView::Id

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

//

TUid CPslnScreenSaverView::Id() const

    {

    return KPslnScreenSaverView;

    }

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

// CPslnScreenSaverView::HandleCommandL

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

//

void CPslnScreenSaverView::HandleCommandL( TInt aCommand )

    {

    TInt currentItem = 0;

    if ( iContainer )

        {

        currentItem = iContainer->CurrentItemIndex();

        }

    switch ( aCommand )

        {

        case EPslnCmdAppChangeScreenSaver:

            if ( iModel->ScreensaverHasCapability( currentItem, EScpCapsConfigure ) )

                {

                HandleScreenSaverSettingsL( currentItem );

                }

            else

                {

                HandleScreenSaverActivationL( currentItem );

                }

            break;

        case EPslnCmdAppSetScreenSaver:

#ifdef __WINS__

            // Trap in wins => unhandled leave propagated to UI level.

            TRAP_IGNORE( HandleScreenSaverActivationL( currentItem ) );

#else

            HandleScreenSaverActivationL( currentItem );

#endif //__WINS__

            break;

        case EPslnCmdPreviewScreenSaver:

            HandleScreenSaverPreviewL( currentItem );

            break;

        case EPslnCmdAppSettings:

            HandleScreenSaverSettingsL( currentItem );

            break;

        case EAknSoftkeyExit:

            aCommand = EAknCmdExit;

            //lint -fallthrough

        default:

            iPslnUi->HandleCommandL( aCommand );

            break;

        }

    }

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

// When screensaver list is updated due to install/uninstall of screensaver,

// this method is called.

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

//

void CPslnScreenSaverView::HandlePluginListChangeL()

    {

    // Set highlight to selected item.

    if ( iContainer )

        {

        static_cast<CPslnScreenSaverContainer*> (iContainer)->UpdateListBoxL();

        TInt newDefault = iModel->CurrentPropertyIndexL( KPslnScreenSettingId );

        if ( newDefault == KErrNotFound )

            {

            // If no default found, assume that date is default.

            newDefault = 0;

            iModel->SetCurrentPropertyTypeL(

                KPslnScreenSettingId,

                newDefault );

            }

        iContainer->SetCurrentItemIndexAndDraw( newDefault );

        CheckMiddleSoftkeyLabelL();

        }

    }

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

// When this method is called, view checks based on highlight focus, if the MSK

// label is correct.

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

//

void CPslnScreenSaverView::CheckMiddleSoftkeyLabelL()

    {

    // First remove any prevous commands.

    RemoveCommandFromMSK();

    if ( IsChangeCommandVisibleL() )

        {

        // Set middle softkey as Change.

        CPslnBaseView::SetMiddleSoftKeyLabelL(

            R_PSLN_MSK_CHANGE,

            EPslnCmdAppChangeScreenSaver );

        }

    else if(IsApplyCommandVisibleL())

        {

        // For "Date" and for inactive screensavers MSK Label is Apply.

        // Apply is also used for simple installed screensavers that do not have settings.

        CPslnBaseView::SetMiddleSoftKeyLabelL(

            R_PSLN_MSK_ACTIVATE,

            EPslnCmdAppSetScreenSaver );

        }

    else

        {

        // when current focus and ticked item is Date.

        // Do not show MSK.

        CPslnBaseView::SetMiddleSoftKeyLabelL(

            R_PSLN_MSK_DUMMY,

            EPslnCmdAppSetScreenSaver );

        }

    }

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

// This is callback method for iPreviewModeSubscriber.

// This method is not allowed to leave - if it leaves, subscription is not

// activated.

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

//

TInt CPslnScreenSaverView::HandlePreviewModeChanged( TAny *aPtr )

    {

    CPslnScreenSaverView* self =

        static_cast<CPslnScreenSaverView*>(aPtr);

    TInt value = KErrNone;

    if ( self->iPreviewModeSubscriber )

        {

        self->iPreviewModeProperty.Get( value );

        }

    if ( value == KPslnScreenSaverPreviewOff )

        {

        // Stop listening for preview mode changes.

        if ( self->iPreviewModeSubscriber )

            {

            self->iPreviewModeSubscriber->Cancel();

            }

        // Restore the original screen saver

        self->iModel->ActivateScreenSaver(

            KErrNotFound,

            EPslnScreenSaverPreviewDeactivation );

        if ( self->iContainer )

            {

            // Update container.

            TRAP_IGNORE(

                static_cast<CPslnScreenSaverContainer*>

                    (self->iContainer)->UpdateListBoxL() );

            }

        }

    return KErrNone;

    }

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

// This is callback method for iPreviewStateSubscriber.

// This method is not allowed to leave - if it leaves, subscription is not

// activated.

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

//

TInt CPslnScreenSaverView::HandlePreviewStateChanged( TAny* aPtr )

    {

    CPslnScreenSaverView* self =

        static_cast<CPslnScreenSaverView*>(aPtr);

    TInt value = KErrNone;

    if ( self->iPreviewStateSubscriber )

        {

        self->iPreviewStateProperty.Get( value );

        }

    return KErrNone;

    }

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

// Screensaver array needs to be loaded before activating the view.

// It is done from UI class.

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

//

void CPslnScreenSaverView::DoActivateL(

            const TVwsViewId& aPrevViewId,

            TUid aCustomMessageId,

            const TDesC8& aCustomMessage )

    {

    CPslnBaseView::DoActivateL(

        aPrevViewId,

        aCustomMessageId,

        aCustomMessage );

    // If view is directly activated (not through main view), update

    // tab group (and main view's active folder). The static views

    // have same UID as their tab index.

    if ( aPrevViewId.iAppUid != KUidPsln )

        {

        iPslnUi->UpdateTabIndex(

            KPslnScreenSaverView.iUid,

            KPslnScreenSaverView.iUid );

        }

    // Notify model that we are ready to receive changes in screensavers.

    iModel->EnableScreenSaverNotifications( ETrue, *this );

    if ( !iScreenSaverNotifier->IsActive() )

        {

        iScreenSaverNotifier->StartListeningL();

        }

    iPsmClient = CPsmClient::NewL(*this);

    iPsmClient->RequestPowerSaveModeNotification();

    // Set highlight to selected item.

    if ( iContainer )

        {

        iContainer->SetCurrentItemIndexAndDraw(

            iModel->CurrentPropertyIndexL( KPslnScreenSettingId ) );

        }

    CheckMiddleSoftkeyLabelL();

    }

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

// This is called when view is deactivated (when another view has been activated),

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

//

void CPslnScreenSaverView::DoDeactivate()

    {

    CPslnBaseView::DoDeactivate();

    // Notify model that we are no longer active.

    // Get the pointer to model from UI class (even though base view also has it)

    // because, the model might have been deleted at this point and base class is

    // not aware of the deletion.

    if ( iPslnUi->Model() )

        {

        iPslnUi->Model()->EnableScreenSaverNotifications( EFalse, *this );

        }

    if(iPsmClient)

    	{

    	iPsmClient->CancelPowerSaveModeNotificationRequest();

        delete iPsmClient;

        iPsmClient = NULL;

    	}

    }

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

// CPslnScreenSaverView::DynInitMenuPaneL

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

//

void CPslnScreenSaverView::DynInitMenuPaneL(

    TInt aResourceId, CEikMenuPane* aMenuPane )

    {

    if ( aResourceId == R_PSLN_SS_VIEW_MENUPANE )

        {

        if ( iContainer )

            {

            iCurrentItem = iContainer->CurrentItemIndex();

            }

        if ( IsChangeCommandVisibleL() )

            {

            // Remove Set screensaver, if current selection is already active.

            aMenuPane->SetItemDimmed( EPslnCmdAppSetScreenSaver, ETrue );

            }

        else if ( IsApplyCommandVisibleL() )

            {

            // Remove Change screensaver if

            //  a) not active screensaver

            //  b) not of Date type

            //  c) installed screensaver is such that it does not have settings.

            aMenuPane->SetItemDimmed( EPslnCmdAppChangeScreenSaver, ETrue );

            }

        else

            {

            // when current focus and ticked item is Date.

            // a) do not show apply

            // b) do not show change

            aMenuPane->SetItemDimmed( EPslnCmdAppSetScreenSaver, ETrue );

            aMenuPane->SetItemDimmed( EPslnCmdAppChangeScreenSaver, ETrue );

            }

        // If it is System screen saver, or the plug-in doesn't allow editing

        // of settings, remove 'Settings' item.

        if ( ( iCurrentItem < KPslnSystemScreenSavers ) ||

             ( !iModel->ScreensaverHasCapability(

                   iCurrentItem, EScpCapsConfigure ) ) )

            {

            // Set Settings off.

            aMenuPane->SetItemDimmed( EPslnCmdAppSettings, ETrue );

            }

        }

    CPslnBaseView::DynInitMenuPaneL( aResourceId, aMenuPane );

    }

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

// CPslnScreenSaverView::HandleListBoxSelectionL

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

//

void CPslnScreenSaverView::HandleListBoxSelectionL()

    {

    if ( iContainer )

        {

        iCurrentItem = iContainer->CurrentItemIndex();

        }

    if ( IsChangeCommandVisibleL() )

        {

        HandleCommandL( EPslnCmdAppChangeScreenSaver );

        }

    else

        {    

        HandleCommandL( EPslnCmdAppSetScreenSaver );

        }

    }

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

// CPslnScreenSaverView::HandleListBoxItemHighlightL

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

//

void CPslnScreenSaverView::HandleListBoxItemHighlightL()

    {    

    }

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

// CPslnScreenSaverView::NewContainerL

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

//

void CPslnScreenSaverView::NewContainerL()

    {

    iContainer = new (ELeave) CPslnScreenSaverContainer();

    iContainer->SetMiddleSoftkeyObserver( this );

    }

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

// CPslnScreenSaverView::SetTitlePaneL

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

//

void CPslnScreenSaverView::SetTitlePaneL( TInt& aResourceId )

    {

#ifdef RD_CONTROL_PANEL

    aResourceId = R_PSLN_TITLE_PANE_SCREENSAVER;

#endif //RD_CONTROL_PANEL

    }

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

// If wallpaper image has changed, update container.

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

//

void CPslnScreenSaverView::HandleNotifyInt( TUint32 /*aId*/, TInt /*aNewValue*/ )

    {

    TInt value = KErrNone;

    if ( iPreviewModeSubscriber )

        {

        iPreviewModeProperty.Get( value );

        }

    if( iContainer && ( value == KPslnScreenSaverPreviewOff ) )

        {

        // Update container.

        TRAP_IGNORE(

            static_cast<CPslnScreenSaverContainer*>

                (iContainer)->UpdateListBoxL() );

        }

    }

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

// If the whole repository changes, update container.

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

//

void CPslnScreenSaverView::HandleNotifyGeneric( TUint32 aId )

    {

    if (  aId == NCentralRepositoryConstants::KInvalidNotificationId || iContainer )

        {

        // Update container.

        TRAP_IGNORE(

            static_cast<CPslnScreenSaverContainer*>

                (iContainer)->UpdateListBoxL() );

        }

    }

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

// In case of error, try to re-start listening.

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

//

void CPslnScreenSaverView::HandleNotifyError(

    TUint32 /*aId*/,

    TInt aError,

    CCenRepNotifyHandler* aHandler )

    {

    if ( ( aError != KErrNone ) && aHandler )

        {

        TRAP_IGNORE( aHandler->StartListeningL() );

        }