/*

* Copyright (c) 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:  Implementation of CDevEncUiMainView.

*

*/

// INCLUDES

//  Class include

#include "DevEncUiMainView.h"

// System includes

#include <aknnotewrappers.h>

#include <aknViewAppUi.h>	// CAknViewAppUi

#include <devencui.rsg>

#include <e32cmn.h>

#include <StringLoader.h>

#include <DevEncExternalCRKeys.h>

// User includes

#include "DevEncLog.h"

#include "DevEnc.hrh"

#include "DevEncUiEncryptionOperator.h"

#include "DevEncUiMainViewContainer.h"

#include "DevEncUiMemoryEntity.h"

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

/**

* Destructor.  Frees up memory for the iLabel.

*/

CDevEncUiMainView::~CDevEncUiMainView()

	{

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

        {

        iMemEntities[i]->RemoveObserver( iContainer );

        }

	delete iContainer;

    delete iEncOperator;

	}

/**

* Symbian OS 2 phase constructor.

* Constructs the CDevEncUiMainView using the NewLC method, popping

* the constructed object from the CleanupStack before returning it.

*

* @param aRect The rectangle for this window

* @return The newly constructed CDevEncUiMainView

*/

CDevEncUiMainView* CDevEncUiMainView::NewL(

                               RArray<CDevEncUiMemoryEntity*>& aMemEntities,

                               CRepository*& aCrSettings,

                               TInt& aMmcStatus )

	{

	CDevEncUiMainView* self = CDevEncUiMainView::NewLC( aMemEntities,

                                                        aCrSettings,

                                                        aMmcStatus );

	CleanupStack::Pop( self );

	return self;

	}

/**

* Symbian OS 2 phase constructor.

* Constructs the CDevEncUiMainView using the constructor and ConstructL

* method, leaving the constructed object on the CleanupStack before returning it.

*

* @param aRect The rectangle for this window

* @return The newly constructed CDevEncUiMainView

*/

CDevEncUiMainView* CDevEncUiMainView::NewLC(

                               RArray<CDevEncUiMemoryEntity*>& aMemEntities,

                               CRepository*& aCrSettings,

                               TInt& aMmcStatus )

	{

	CDevEncUiMainView* self =

        new ( ELeave ) CDevEncUiMainView( aMemEntities,

                                          aCrSettings,

                                          aMmcStatus );

	CleanupStack::PushL( self );

	self->ConstructL();

	return self;

	}

CDevEncUiMainView::CDevEncUiMainView( RArray<CDevEncUiMemoryEntity*>& aMemEntities,

                                      CRepository*& aCrSettings,

                                      TInt& aMmcStatus )

    : iMemEntities( aMemEntities ),

      iCrSettings( aCrSettings ),

      iMmcStatus( aMmcStatus )

	{

	}

/**

* Symbian OS 2nd phase constructor.

* Uses the superclass constructor to construct the view

*/

void CDevEncUiMainView::ConstructL()

	{

	BaseConstructL( R_DEVENCUI_MAINVIEW );

    iContainer = CDevEncUiMainViewContainer::NewL( AppUi()->ClientRect(),

												   iMemEntities,

                                                   *this,

                                                   iCrSettings,

                                                   iMmcStatus );

    iContainer->SetMopParent( this );

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

        {

        iMemEntities[i]->AddObserverL( iContainer );

        }

    }

/**

* Called by the framework

* @return The Uid for this view

*/

TUid CDevEncUiMainView::Id() const

	{

	return TUid::Uid( EDevEncUiMainViewId );

	}

/**

* Called by the framework when the view is activated.

* Adds the container to the control stack.

*/

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

									 TUid /*aCustomMessageId*/,

									 const TDesC8& /*aCustomMessage*/)

    {

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

    if ( iEikonEnv->StartedAsServerApp() )

        {

        CEikButtonGroupContainer* cba = Cba();

        cba->SetCommandSetL( R_AVKON_SOFTKEYS_OPTIONS_BACK );

        }

    }

/**

* Called by the framework when the view is deactivated.

* Removes the container from the control stack.

*/

void CDevEncUiMainView::DoDeactivate()

	{

	if ( iContainer )

		{

		AppUi()->RemoveFromStack( iContainer );

		}

	}

/**

* From CEikAppUi, takes care of command handling for this view.

*

* @param aCommand command to be handled

*/

void CDevEncUiMainView::HandleCommandL( TInt aCommand )

	{

	switch ( aCommand )

		{

        case EDevEncUiCommandChange:

            {

            // Show the toggle popup

            if ( iContainer->ChangeSelectedItemL() )

                {

                // The user made a new selection

                TDevEncUiMemoryType memoryType =

                    static_cast<TDevEncUiMemoryType>( iContainer->SelectedItem() );

                EncryptionStatusChangeReq( memoryType );

                }

            break;

            }

		default:

			{

			AppUi()->HandleCommandL( aCommand );

			break;

			}

		}

	}

void CDevEncUiMainView::DynInitMenuPaneL( TInt aResourceId,

                                          CEikMenuPane* aMenuPane )

    {

    if ( ! iContainer ||

         iMemEntities.Count() == 0 )

        {

        return;

        }

    // Disable the "Change" menu item if an encryption operation is ongoing

    if ( aResourceId == R_DEVENCUI_MENU_MAIN )

        {

        TBool proceed( ETrue );

        TInt dmControl( 0 );

        TInt err = iCrSettings->Get( KDevEncUiDmControl, dmControl );

        if ( err )

            {

            DFLOG2( "Cenrep error %d", err );

            User::Leave( err );

            }

        // Check if phone memory encryption is controlled by dev management

        if ( ( dmControl & KDmControlsPhoneMemory ) &&

             ( iContainer->SelectedItem() == EPhoneMemory ) )

            {

            // Selected memory is controlled by DM -> disable "Change"

            aMenuPane->SetItemDimmed( EDevEncUiCommandChange, ETrue );

            proceed = EFalse;

            }

        // Check if memory card encryption is controlled by dev management

        if ( ( dmControl & KDmControlsMemoryCard ) &&

             ( iContainer->SelectedItem() == EMemoryCard ) )

            {

            // Selected memory is controlled by DM -> disable "Change"

            aMenuPane->SetItemDimmed( EDevEncUiCommandChange, ETrue );

            proceed = EFalse;

            }

        if ( !proceed )

            {

            DFLOG( "Hiding Change, item is controlled by DM" );

            return;

            }

        // Show the "Change" item if encryption status can be changed

        TBool allowChange( EFalse );

        if ( ( iMemEntities[ EMemoryCard ]->State() == EUnmounted  ||

               iMemEntities[ EMemoryCard ]->State() == EDecrypted ||

               iMemEntities[ EMemoryCard ]->State() == EEncrypted ) &&

               ( iMemEntities[ EPhoneMemory ]->State() == EDecrypted ||

                 iMemEntities[ EPhoneMemory ]->State() == EEncrypted ) )

            {

            allowChange = ETrue;

            }

        if ( allowChange )

            {

            aMenuPane->SetItemDimmed( EDevEncUiCommandChange, EFalse );

            }

        else

            {

            aMenuPane->SetItemDimmed( EDevEncUiCommandChange, ETrue );

            }

        }

    }

CDevEncUiAppUi& CDevEncUiMainView::GetAppUi()

	{

	CAknViewAppUi* aknViewAppUi = AppUi();

    CDevEncUiAppUi* appUi = reinterpret_cast<CDevEncUiAppUi*>( aknViewAppUi );

	return ( *appUi );

	}

void CDevEncUiMainView::EncryptionStatusChangeReq( TDevEncUiMemoryType aType )

    {

    // Can't do anything about errors here

    TInt error( KErrNone );

    TRAP( error, DoEncryptionStatusChangeReqL( aType ) );

    if ( error )

        {

        DFLOG2( "DoEncryptionStatusChangeReqL error %d", error );

        }

    }

// TBI: Async this function and create a subfunction with -L

void CDevEncUiMainView::DoEncryptionStatusChangeReqL( TDevEncUiMemoryType aType )

    {

    DFLOG( "CDevEncUiMainView::DoEncryptionStatusChangeReqL" );

    // Check if we are allowed to start an encryption operation

    TInt dmControl( 0 );

    TInt err = iCrSettings->Get( KDevEncUiDmControl, dmControl );

    if ( err )

        {

        DFLOG2( "Cenrep error %d", err );

        User::Leave( err );

        }

    if ( DmControlsMemory( aType, dmControl ) )

        {

        // Encryption controlled by admin

        ErrorNoteL( R_DEVENCUI_NOTE_ADMIN_CONTROL );

        return;

        }

    // Create the encryption operator if necessary

    if ( ! iEncOperator )

        {

        iEncOperator = CDevEncUiEncryptionOperator::NewL( *iEikonEnv,

                                                          *AppUi(),

                                                          iCrSettings );

        }

    // Get the currently highlighted memory type

    CDevEncUiMemoryEntity* mem = iMemEntities[ aType ];

    DFLOG3( "Mem type: %d, state: %d", aType, mem->State() );

    if ( aType == EPhoneMemory )

        {

        CDevEncUiMemoryEntity* phoneMemory = iMemEntities[ EPrimaryPhoneMemory];

        iEncOperator->HandlePhoneMemEncryptRequestL( mem, phoneMemory );

        }

    else // aType = EMemoryCard

        {

        HandleMemoryCardEncryptRequestL( mem );

        }

    }

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

// CDevEncUiMainView::ErrorNoteL()

// TBI: Create base class and move this there

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

//

void CDevEncUiMainView::ErrorNoteL( TInt aResourceId )

    {

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

    CAknErrorNote* errorNote = new ( ELeave ) CAknErrorNote;

    errorNote->ExecuteLD( *message );

    CleanupStack::PopAndDestroy( message );

    }

// TBI: Create base class and move this there

TBool CDevEncUiMainView::DmControlsMemory( TDevEncUiMemoryType aType,

                                           TInt aDmControlSetting )

    {

    TBool result( EFalse );

    if ( ( aType == EPhoneMemory ) &&

         ( aDmControlSetting & KDmControlsPhoneMemory ) )

        {

        result = ETrue;

        }

    if ( ( aType == EMemoryCard ) &&

         ( aDmControlSetting & KDmControlsMemoryCard ) )

        {

        result = ETrue;

        }

    return result;

    }

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

// CDevEncUiMainView::HandleMemoryCardEncryptRequestL()

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

//

void CDevEncUiMainView::HandleMemoryCardEncryptRequestL( CDevEncUiMemoryEntity* aMem )

    {

    // Check if the driver has a known encryption key

    TInt mmcEncrOn( 0 );

    iCrSettings->Get( KDevEncUserSettingMemoryCard, mmcEncrOn );

    if ( aMem->State() == EDecrypted ||

         aMem->State() == EUnmounted )

        {

        if ( mmcEncrOn )

            {

            // Mmc decrypted or ejected but encryption is on ->

            // suggest destruction of key

            DFLOG( "Mmc decrypted, encryption key set -> destroy key?" );

            if ( aMem->State() == EDecrypted )

                {

                // Mmc inserted -> indicate that it is decrypted

                // (see UI spec 2.12)

                iEncOperator->DestroyKeyQueryL( ETrue );

                }

            else

                {

                // Mmc ejected -> no need to show note

                // (see UI spec 2.11)

                iEncOperator->DestroyKeyQueryL( EFalse );

                }

            }

        else

            {

            // Mmc decrypted and encryption is off -> show encryption menu

            DFLOG( "Mmc decrypted, encryption key not set -> enc menu" );

            AppUi()->ActivateLocalViewL( TUid::Uid( EDevEncUiEncrViewId ) );

            }

        }

    else if ( aMem->State() == EEncrypted )

        {

        // Encryption is on -> show decryption menu

        DFLOG( "Mmc encrypted -> decr menu" );

        AppUi()->ActivateLocalViewL( TUid::Uid( EDevEncUiDecrViewId ) );

        }

    else if ( aMem->State() == ECorrupted )

        {

        if ( mmcEncrOn )

            {

            // Mmc seems to be encrypted with another key.

            // Ask if the user wants to import another key.

            // (See UI spec 2.10)

            DFLOG( "CDevEncUiMainView::HandleMemoryCardEncryptRequestL => Mmc encrypted with another key, enc on -> import key" );

            iEncOperator->SuggestMmcImportKeyL( aMem, ETrue );

            }

        else

            {

            // Mmc is probably encrypted with another key -> show encryption

            // menu to let user choose a key

            DFLOG( "Mmc encrypted, encryption key not set -> enc menu" );

            AppUi()->ActivateLocalViewL( TUid::Uid( EDevEncUiEncrViewId ) );

            }

        }

    else

        {

        DFLOG2( "Mmc busy, state = %d, no action", aMem->State() );

        }

    // Depending on the user's selection, the memory may be in the same

    // state as before or in a new state. This call will let all observers

    // know what state the memory ended up in.

    aMem->UpdateMemoryInfo();

    }

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

//  Called by the framework when the application status pane

//  size is changed.  Passes the new client rectangle to the container.

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

void CDevEncUiMainView::HandleStatusPaneSizeChange()

    {

    if ( iContainer )

        {

        iContainer->SetRect( ClientRect() );

        }

    }

// End of File