/*

* Copyright (c) 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:  

*

*/

#include <aknnavide.h> 

#include <texttospeech.rsg>

#include "texttospeechappui.h"

#include "texttospeechengine.h"

#include "texttospeechsettingitemlistview.h"

#include "texttospeechsettingitemlist.h"

#include "texttospeechsettingitemlistsettings.h"

#include "texttospeech.hrh"

const TInt KMaxVolumeInUI = 10;

/**

 * First phase of Symbian two-phase construction. Should not contain any

 * code that could leave.

 */

CTextToSpeechSettingItemListView::CTextToSpeechSettingItemListView()

    {

    }

/** 

 * The view's destructor removes the container from the control

 * stack and destroys it.

 */

CTextToSpeechSettingItemListView::~CTextToSpeechSettingItemListView()

    {

    }

/**

 * Symbian two-phase constructor.

 * This creates an instance then calls the second-phase constructor

 * without leaving the instance on the cleanup stack.

 * @return new instance of CTextToSpeechSettingItemListView

 */

CTextToSpeechSettingItemListView* CTextToSpeechSettingItemListView::NewL()

    {

    CTextToSpeechSettingItemListView* self = 

        CTextToSpeechSettingItemListView::NewLC();

    CleanupStack::Pop( self );

    return self;

    }

/**

 * Symbian two-phase constructor.

 * This creates an instance, pushes it on the cleanup stack,

 * then calls the second-phase constructor.

 * @return new instance of CTextToSpeechSettingItemListView

 */

CTextToSpeechSettingItemListView* CTextToSpeechSettingItemListView::NewLC()

    {

    CTextToSpeechSettingItemListView* self = 

        new (ELeave) CTextToSpeechSettingItemListView();

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

/**

 * Second-phase constructor for view.  

 * Initialize contents from resource.

 */ 

void CTextToSpeechSettingItemListView::ConstructL()

    {

    BaseConstructL( 

        R_TEXT_TO_SPEECH_SETTING_ITEM_LIST_TEXT_TO_SPEECH_SETTING_ITEM_LIST_VIEW );        

    }

/**

 * @return The UID for this view

 */

TUid CTextToSpeechSettingItemListView::Id() const

    {

    return TUid::Uid( ETextToSpeechSettingItemListViewId );

    }

/**

 * Handle a command for this view (override)

 * @param aCommand command id to be handled

 */

void CTextToSpeechSettingItemListView::HandleCommandL( TInt aCommand )

    {   

    TBool commandHandled( ETrue );

    CAknVolumeControl* control( NULL );

    switch ( aCommand )

        { // code to dispatch to the AknView's menu and CBA commands is generated here

        case ETextToSpeechSettingItemListViewMenuItem1Command:

        case EAknSoftkeyChange:

            iTextToSpeechSettingItemList->ChangeSelectedItemL();

            break;

        case ETextToSpeechSettingItemListViewSynthesiseMenuItemCommand:

            iEngine->SetSpeakingRateL( iSettings->Slider1() );

            iEngine->SetVoiceL( iSettings->iVoice ); 

            iEngine->InitAndPlayText( iSettings->Edit1() ); 

            break;

        case ETextToSpeechSettingItemListViewExitMenuItemCommand:

            AppUi()->HandleCommandL( EEikCmdExit );

            break;

        case EKeyIncVolume:

            iEngine->SetVolumeL( iSettings->iVolume + 

                                 iSettings->iMaxVolume / KMaxVolumeInUI );

            iSettings->iVolume = iSettings->iVolume + 

                                 iSettings->iMaxVolume / KMaxVolumeInUI;

            control = static_cast< CAknVolumeControl* >( 

                        iVolumeControl->DecoratedControl() );

            control->SetValue( KMaxVolumeInUI * 

                               iSettings->iVolume / iSettings->iMaxVolume );

            break;

        case EKeyDecVolume:

            iEngine->SetVolumeL( iSettings->iVolume - 

                                 iSettings->iMaxVolume / KMaxVolumeInUI );

            iSettings->iVolume = iSettings->iVolume - 

                                 iSettings->iMaxVolume / KMaxVolumeInUI;

            control = static_cast< CAknVolumeControl* >( 

                        iVolumeControl->DecoratedControl() );

            control->SetValue( KMaxVolumeInUI * 

                               iSettings->iVolume / iSettings->iMaxVolume );

            break;

        default:

            commandHandled = EFalse;

            break;

        }

    if ( !commandHandled && aCommand == EAknSoftkeyExit )

        {

        AppUi()->HandleCommandL( EEikCmdExit );

        }

    }

/**

 * Handles Navidecorator events (Arrow left and arrow right)

 * @param aEventID ID of event to be handled

 */

void CTextToSpeechSettingItemListView::HandleNaviDecoratorEventL( TInt aEventID )

    {

    CAknVolumeControl* control( NULL );

    switch ( aEventID )

        {

        case EAknNaviDecoratorEventRightTabArrow: 

            HandleCommandL( EKeyIncVolume );

            break;

        case EAknNaviDecoratorEventLeftTabArrow:

            HandleCommandL( EKeyDecVolume );

            break;

        case EAknNaviDecoratorEventNaviLabel:

            control = static_cast< CAknVolumeControl* >( 

                        iVolumeControl->DecoratedControl() );

            if ( control )

                {

                TInt value = control->Value();

                iEngine->SetVolumeL( value * 

                                     iSettings->iMaxVolume / KMaxVolumeInUI );

                iSettings->iVolume = value * 

                                     iSettings->iMaxVolume / KMaxVolumeInUI ;

                }

            break;

        }

    }

/**

 * Activate view

 * @param aPrevViewId 

 * @param aCustomMessageId 

 * @param aCustomMessage

 */

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

                                                    TUid /*aCustomMessageId*/,

                                                    const TDesC8& /*aCustomMessage*/ )

    {

    CEikButtonGroupContainer *cba = AppUi()->Cba();

    if ( cba ) 

        {

        cba->MakeVisible( EFalse );

        }

    if ( !iTextToSpeechSettingItemList )

        {

        iEngine = (((CTextToSpeechAppUi*)AppUi())->AppEngine());

        iSettings = CTextToSpeechSettingItemListSettings::NewL();

        iTextToSpeechSettingItemList = 

            new (ELeave) CTextToSpeechSettingItemList( *iSettings, this );

        iTextToSpeechSettingItemList->SetMopParent( this );

        iTextToSpeechSettingItemList->ConstructFromResourceL( 

            R_TEXT_TO_SPEECH_SETTING_ITEM_LIST_TEXT_TO_SPEECH_SETTING_ITEM_LIST );

        iTextToSpeechSettingItemList->ActivateL();

        iTextToSpeechSettingItemList->LoadSettingValuesL();

        iTextToSpeechSettingItemList->LoadSettingsL();

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

        SetupStatusPaneL(); 

        }

    }

/**

 * Deactivate view

 */

void CTextToSpeechSettingItemListView::DoDeactivate()

    {

    CleanupStatusPane();

    CEikButtonGroupContainer *cba = AppUi()->Cba();

    if ( cba ) 

        {

        cba->MakeVisible( ETrue );

        cba->DrawDeferred();

        }

    if ( iTextToSpeechSettingItemList )

        {

        AppUi()->RemoveFromStack( iTextToSpeechSettingItemList );

        delete iTextToSpeechSettingItemList;

        iTextToSpeechSettingItemList = NULL;

        delete iSettings;

        iSettings = NULL;

        }    

    }

/**

 * Show volume indicator in status pane

 */

void CTextToSpeechSettingItemListView::SetupStatusPaneL()

    {

    if ( !iVolumeControl )

        {

        CAknNavigationControlContainer* naviPane = 

            static_cast< CAknNavigationControlContainer* >( 

                iEikonEnv->AppUiFactory()->StatusPane()->ControlL( 

                    TUid::Uid( EEikStatusPaneUidNavi ) ) );

        iVolumeControl = 

            naviPane->CreateVolumeIndicatorL( R_AVKON_NAVI_PANE_VOLUME_INDICATOR );

        // Subscribe for changes in volume indicator 

        iVolumeControl->SetNaviDecoratorObserver( this );

        iVolumeControl->SetControlType( CAknNavigationDecorator::ENaviLabel );

        CAknVolumeControl* control = 

            static_cast< CAknVolumeControl* >( iVolumeControl->DecoratedControl() );

        control->SetValue( KMaxVolumeInUI * 

                           iSettings->iVolume / iSettings->iMaxVolume );

        naviPane->PushL( *iVolumeControl );

        } 

    }

/**

 * Delete volume indicator

 */

void CTextToSpeechSettingItemListView::CleanupStatusPane()

    {

    delete iVolumeControl;

    iVolumeControl = NULL;

    }

/** 

 * Handle status pane size change for this view (override)

 */

void CTextToSpeechSettingItemListView::HandleStatusPaneSizeChange()

    {

    CAknView::HandleStatusPaneSizeChange();

    // this may fail, but we're not able to propagate exceptions here

    TRAP_IGNORE( SetupStatusPaneL() ); 

    }

// End of file