/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  This file contains the header file of the CMidletUI class.

*

*                This class implements the ECom SWInstUIPluginAPI interface

*                for midlet installation.

*

*/

#include <Avkon.rsg>

#include <WidgetInstallerUI.rsg>

#include <aknnotewrappers.h>

#include "SWInstWidgetUid.h"

#include "WidgetInstallerInternalCRKeys.h"

#include "WidgetUIHandler.h"

// CONSTANTS

const TInt KB = 1024;

using namespace SwiUI;

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

// ============================================================================

// CWidgetUIHandler::NewL()

// two-phase constructor

//

// @since 3.1

// ============================================================================

//

CWidgetUIHandler* CWidgetUIHandler::NewL( TInstallMode aMode,

                                          MWidgetUICancelObserver* aCancelObserver )

    {

    CWidgetUIHandler* self = new( ELeave ) CWidgetUIHandler( aMode, aCancelObserver );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

// ============================================================================

// CWidgetUIHandler:CWidgetUIHandler()

// C++ default constructor

//

// @since 3.1

// ============================================================================

//

CWidgetUIHandler::CWidgetUIHandler( TInstallMode aMode,

                                    MWidgetUICancelObserver* aCancelObserver )

    :iCancelObserver( aCancelObserver ),

     iMode( aMode )

    {

    }

// ============================================================================

// CWidgetUIHandler:ConstructL()

// Symbian default constructor

//

// @since 3.1

// ============================================================================

//

void CWidgetUIHandler::ConstructL()

    {

    iCommonDialogs = CommonUI::CCUIDialogs::NewL();

    if ( iMode == EModeInstall )

         {

         iProgressNumbers = new ( ELeave ) CArrayFixFlat<TInt>( 2 );

         iProgressNumbers->ResizeL( 2 );

         iCommonDialogs->ShowWaitDialogL( R_WIDGETUI_PREPARE, this, R_AVKON_SOFTKEYS_EMPTY );

         }

    }

// ============================================================================

// CWidgetUIHandler::~CWidgetUIHandler()

// destructor

//

// @since 3.1

// ============================================================================

//

CWidgetUIHandler::~CWidgetUIHandler()

    {

    delete iProgressNumbers;

    delete iCommonDialogs;

    }

// ============================================================================

// CWidgetUIHandler::DisplayInstallL()

// Displays a dialog at the beginning of an installation

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::DisplayInstallL(

    const TDesC& aWidgetName

    )

    {

    iShowingDialog = ETrue;

    // Close the preparing wait dialog

    iCommonDialogs->CloseWaitDialogL();

    TBool result( EFalse );

    HBufC* prompt = StringLoader::LoadLC( R_WIDGETUI_INSTALL_PROMPT, aWidgetName );

    if ( iCommonDialogs->ShowConfirmationQueryL( *prompt, R_AVKON_SOFTKEYS_YES_NO ) )

        {

        result = ETrue;

        }

    else

        {

        // Make sure no notes are shown after this

        iShownFinalNote = ETrue;

        }

    CleanupStack::PopAndDestroy( prompt );

    iShowingDialog = EFalse;

    return result;

    }

// ============================================================================

// CWidgetUIHandler::DisplayOverwriteL()

// Displays a dialog at the beginning of an update

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::DisplayOverwriteL(

    const TDesC& aWidgetName

    )

    {

    iShowingDialog = ETrue;

    // Close the preparing wait dialog

    iCommonDialogs->CloseWaitDialogL();

    TBool result( EFalse ); // false means user says no/cancel/stop

    HBufC* prompt = StringLoader::LoadLC( R_WIDGETUI_OVERWRITE_PROMPT, aWidgetName );

    if ( iCommonDialogs->ShowConfirmationQueryL( *prompt, R_AVKON_SOFTKEYS_YES_NO ) )

        {

        result = ETrue;

        }

    else

        {

        // Make sure no notes are shown after this

        iShownFinalNote = ETrue;

        }

    CleanupStack::PopAndDestroy( prompt );

    iShowingDialog = EFalse;

    return result;

    }

// ============================================================================

// CWidgetUIHandler::DisplayUpgradeL()

// Displays a dialog asking whether we want to upgrade an application present on the device.

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::DisplayUpgradeL( const Swi::CAppInfo& /*aAppInfo*/,

                               const Swi::CAppInfo& /*aExistingAppInfo*/ )

    {

    return ETrue;

    }

// ============================================================================

// CWidgetUIHandler::DisplayUninstallL()

// Displays a dialog at the start of the uninstallation with

// information about the application to be uninstalled.

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::DisplayUninstallL( const TDesC& aWidgetName , TBool aWidgetinHomeScreen )

    {

    iShowingDialog = ETrue;

    // Close the preparing wait dialog

    iCommonDialogs->CloseWaitDialogL();

    TBool result( EFalse );

    HBufC* prompt = StringLoader::LoadLC( aWidgetinHomeScreen ? R_WIDGETUI_UNINSTALL_HS_PROMPT : 

                                          R_WIDGETUI_UNINSTALL_PROMPT , aWidgetName );

    if ( iCommonDialogs->ShowConfirmationQueryL( *prompt, R_AVKON_SOFTKEYS_YES_NO ) )

        {

        result = ETrue;

        }

    else

        {

        // Make sure no notes are shown after this

        iShownFinalNote = ETrue;

        }

    CleanupStack::PopAndDestroy( prompt );

    iShowingDialog = EFalse;

    return result;

    }

// ============================================================================

// CWidgetUIHandler::DisplayTextL()

// Displays a dialog with given text

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::DisplayTextL( const TDesC& /*aText*/ )

    {

    return ETrue;

    }

// ============================================================================

// CWidgetUIHandler::DisplayErrorL()

// Displays a dialog with given error

//

// @since 3.1

// ============================================================================

//

void CWidgetUIHandler::DisplayErrorL( TInt aErr )

    {

    iShowingDialog = ETrue;

    HBufC* prompt = NULL;

    switch ( aErr )

        {

        case KErrNotSupported:

            prompt = StringLoader::LoadLC( R_WIDGETUI_UNSUPPORTED );

            break;

        case KErrCorrupt:

            prompt = StringLoader::LoadLC( R_WIDGETUI_CORRUPTED );

            break;

        case KErrNoMemory:

            prompt = StringLoader::LoadLC( R_WIDGETUI_NO_MEMORY );

            break;

        case KErrInUse:

            prompt = StringLoader::LoadLC( R_WIDGETUI_ERR_INUSE );

            break;

        default:

            prompt = StringLoader::LoadLC( R_WIDGETUI_ERR_GENERAL );

            break;

        }

    iCommonDialogs->ShowErrorNoteL( prompt->Des() );

    CleanupStack::PopAndDestroy(); // prompt

    iShowingDialog = EFalse;

    }

// ============================================================================

// CWidgetUIHandler::DisplayApplicationsInUseL()

// Displays a dialog with information that the widget is already in use

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::DisplayApplicationsInUseL( const Swi::CAppInfo& /*aAppInfo*/,

                                         const RPointerArray<TDesC>& /*aAppNames*/ )

    {

    return ETrue;

    }

// ============================================================================

// CWidgetUIHandler::HandleDialogExitL()

//  when user click softkey during progress dialog

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::HandleDialogExitL( TInt aButtonId )

    {

    TBool result( EFalse );

    if ( aButtonId == EAknSoftkeyCancel )

        {

        result = ETrue;

        iCancelObserver->UserCancelL( EFalse );

        }

    return result;

    }

// ============================================================================

// CWidgetUIHandler::UpdateProgessDialogL

// Increments installation progress

//

// @since 3.1

// ============================================================================

//

void CWidgetUIHandler::UpdateProgressDialogL( TInt aSize )

{

    iInstalledSize += aSize;

    // rest just updates strings showing kilobytes processed

    if ( KB < iUncompressedSize ) // if less than 1K then dialog is meaningless

        {

        iCommonDialogs->UpdateProgressDialogValueL( aSize );

        (*iProgressNumbers)[0] = iInstalledSize / KB;

        HBufC* displayString = StringLoader::LoadLC( R_WIDGETUI_PROGRESS, *iProgressNumbers );

        iCommonDialogs->ShowProgressDialogL( *displayString, this ); // just updates size strings

        CleanupStack::PopAndDestroy();  // displayString

        }

}

// ============================================================================

// CWidgetUIHandler::DisplayProgessDialogL

// Starts installation progress dialog display

//

// @since 3.1

// ============================================================================

//

void CWidgetUIHandler::DisplayProgressDialogL()

    {

    iInstalledSize = 0;

    if ( KB < iUncompressedSize ) // if less than 1K then dialog is meaningless

        {

        (*iProgressNumbers)[0] = 0;

        (*iProgressNumbers)[1] = iUncompressedSize / KB;

        HBufC* displayString = StringLoader::LoadLC( R_WIDGETUI_PROGRESS, *iProgressNumbers );

        iCommonDialogs->ShowProgressDialogL( *displayString, this );

        iCommonDialogs->SetProgressDialogFinalValueL( iUncompressedSize );

        CleanupStack::PopAndDestroy();  // displayString

        }

}

// ============================================================================

// CWidgetUIHandler::SelectDriveL

// Asks the UI for a drive to select.

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

//

// @since 3.1

// ============================================================================

//

TBool CWidgetUIHandler::SelectDriveL( RFs& aFs,

                                      TDriveUnit& aDrive,

                                      TBool& aSufficientSpace,

                                      TInt aTotalSize)

    {

    aSufficientSpace = EFalse;

    TBool result( EFalse );

    iShowingDialog = ETrue;

    iUncompressedSize = aTotalSize;

    TInt error = KErrNone;

    // List of all possible installation detination drives

    RArray<TDriveUnit> driveUnits;

    CleanupClosePushL( driveUnits );

    // and free memory space in those drives

    RArray<TInt64> driveSpaces;

    CleanupClosePushL( driveSpaces );

    // List all drives in the system

    TDriveList driveList;

    User::LeaveIfError( aFs.DriveList(driveList) );

    // Check all drives

    for ( TInt driveNumber = EDriveA; driveNumber <= EDriveZ; driveNumber++ )

        {

        if ( EDriveD == driveNumber)

            {

            // The drive is not suitable for installation

            continue;

            }

        if ( !driveList[driveNumber] )

            {

            // Not a recognised drive

            continue;

            }

        TVolumeInfo volInfo;

        if ( aFs.Volume( volInfo, driveNumber ) != KErrNone )

            {

            // The volume is not usable (e.g. no media card inserted)

            continue;

            }

        if ( volInfo.iDrive.iType==EMediaNotPresent ||

             volInfo.iDrive.iType==EMediaRom ||

             volInfo.iDrive.iType==EMediaRemote )

            {

            // Exclude drives not suitable for installation

            continue;

            }

        // Exclude read only and substituted drives

        if ( volInfo.iDrive.iDriveAtt & KDriveAttRom ||

             volInfo.iDrive.iDriveAtt & KDriveAttSubsted )

            {

            continue;

            }

        // Check whether the drive is usable for installation! E.g. not a

        // temporary ram drive. This is vendor-implemented function which is

        // device-specific.

// PlpVariant library doesn't have any implementation for DriveStatusL() yet

//       if (PlpVariant::DriveStatusL(static_cast<TDriveNumber>(driveNumber)) !=

//           static_cast<TUint32> (KErrNone))

        TInt64 volSpace = volInfo.iFree;  // bytes

        User::LeaveIfError( driveUnits.Append( TDriveUnit( driveNumber ) ) );

        User::LeaveIfError( driveSpaces.Append( volSpace / KB ) );

        }

    TInt selection( 0 );

    error = iCommonDialogs->ShowDriveSelectionDialogL( aTotalSize,

                                                       driveUnits,

                                                       driveSpaces,

                                                       selection );

    if ( error == KErrNoMemory )

        {

        // The engine will call us with proper ota status ( no memory )

        aSufficientSpace = EFalse;

        result = ETrue;

        }

    else if ( error == KErrCancel )

        {

        // User cancelled the query

        aSufficientSpace = ETrue;

        result = EFalse;

        }

    else

        {

        // OK To install

        result = ETrue;

        aDrive = driveUnits[selection];

        aSufficientSpace = ETrue;

        }

    CleanupStack::PopAndDestroy( 2 ); // &driveSpaces, &driveUnits

    iShowingDialog = EFalse;

    return result;

    }

// ============================================================================

// CWidgetUIInstallHandler::DisplayCompleteL()

// Display install completed information

//

// @since 3.1

// ============================================================================

//

void CWidgetUIHandler::DisplayCompleteL()

    {

    if ( !iShownFinalNote )

        {

        HBufC* string = NULL;

        if ( iMode == EModeInstall )

            {

            string = StringLoader::LoadLC( R_WIDGETUI_INSTALL_COMPLETED );

            }

        else

            {

            string = StringLoader::LoadLC( R_WIDGETUI_UNINSTALL_COMPLETED );

            }

        CAknConfirmationNote* note = new (ELeave) CAknConfirmationNote( ETrue );

        note->ExecuteLD( *string );

        CleanupStack::PopAndDestroy( string );

        }

    iShownFinalNote = ETrue;

    }

// ============================================================================

// CWidgetUIInstallHandler::DisplayCancelL()

// Display install canceled information

//

// @since 3.1

// ============================================================================

//

void CWidgetUIHandler::DisplayCancelL()

{

    HBufC* string = NULL;

    if ( iMode == EModeInstall )

    {

        string = StringLoader::LoadLC( R_WIDGETUI_INSTALL_CANCELED );

    }

    else

    {

        string = StringLoader::LoadLC( R_WIDGETUI_UNINSTALL_CANCELED );

    }

    CAknConfirmationNote* note = new ( ELeave ) CAknConfirmationNote( ETrue );

    note->ExecuteLD( *string );

    CleanupStack::PopAndDestroy( string );

}

// ============================================================================

// CWidgetUIInstallHandler::DisplayFinalizeDialogL()

// Display the finalize dialog

//

// @since 3.1

// ============================================================================

//

void CWidgetUIHandler::DisplayFinalizeDialogL()

    {

    iCommonDialogs->ShowWaitDialogL( R_WIDGETUI_FINALIZE_INSTALL,

                                     this, R_AVKON_SOFTKEYS_EMPTY );

    }