/*

* 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 "texttospeechappui.h"

#include "texttospeechengine.h"

#include "texttospeechsettingitemlist.h"

#include "texttospeechsettingitemlistsettings.h"

#include "texttospeech.hrh"

/**

 * Construct the CTextToSpeechSettingItemList instance

 * @param aCommandObserver command observer

 */ 

CTextToSpeechSettingItemList::CTextToSpeechSettingItemList( 

    CTextToSpeechSettingItemListSettings& aSettings, 

    MEikCommandObserver* aCommandObserver ) :

    iSettings( aSettings ), 

    iCommandObserver( aCommandObserver )

    {

    }

/** 

 * Destroy any instance variables

 */

CTextToSpeechSettingItemList::~CTextToSpeechSettingItemList()

    {

    }

/**

 * Handle system notification that the container's size has changed.

 */

void CTextToSpeechSettingItemList::SizeChanged()

    {

    if ( ListBox() ) 

        {

        ListBox()->SetRect( Rect() );

        }

    }

/**

 * Create one setting item at a time, identified by id.

 * CAknSettingItemList calls this method and takes ownership

 * of the returned value.  The CAknSettingItem object owns

 * a reference to the underlying data, which EditItemL() uses

 * to edit and store the value.

 */

CAknSettingItem* CTextToSpeechSettingItemList::CreateSettingItemL( TInt aId )

    {

    CAknSettingItem* item( NULL );    

    switch ( aId )

        {

        case ETextToSpeechSettingItemListViewEdit1:

            {            

            item = new (ELeave) CAknTextSettingItem( aId, iSettings.Edit1() );

            break;

            }

        case ETextToSpeechSettingItemListViewEnumeratedTextPopup1:

            {            

            item = new (ELeave) CAknEnumeratedTextPopupSettingItem( 

                aId, iSettings.EnumeratedTextPopup1() );

            break;

            }

        case ETextToSpeechSettingItemListViewEnumeratedTextPopup2:

            {            

            item = new (ELeave) CAknEnumeratedTextPopupSettingItem( 

                aId, iSettings.EnumeratedTextPopup2() );

            break;

            }

        case ETextToSpeechSettingItemListViewSlider1:

            {            

            item = new (ELeave) CAknSliderSettingItem( 

                aId, iSettings.Slider1() );

            break;

            }

        }

    return item;

    }

/**

 * Edit the setting item identified by the given id and store

 * the changes into the store.

 * @param aIndex the index of the setting item in SettingItemArray()

 * @param aCalledFromMenu true: a menu item invoked editing, thus

 *    always show the edit page and interactively edit the item;

 *    false: change the item in place if possible, else show the edit page

 */

void CTextToSpeechSettingItemList::EditItemL ( TInt aIndex, TBool aCalledFromMenu )

    {

    CAknSettingItemList::EditItemL( aIndex, aCalledFromMenu );

    CAknSettingItem* item = ( *SettingItemArray() )[aIndex];

    TInt tmp1;

    TInt tmp2;

    switch ( item->Identifier() )

        {

        case ETextToSpeechSettingItemListViewEnumeratedTextPopup1:

            tmp1 = iSettings.EnumeratedTextPopup1();

            item->StoreL();

            tmp2 = iSettings.EnumeratedTextPopup1();

            if ( tmp1 != tmp2 )

                {

                TLanguage lang = 

                    iSettings.iLanguages[iSettings.EnumeratedTextPopup1()];

                iSettings.iVoices.Reset();

                iEngine->GetVoicesL( iSettings.iVoices, lang );

                LoadVoicesL( ETrue ); 

                iSettings.iVoice = 

                    iSettings.iVoices[iSettings.EnumeratedTextPopup2()];

                HandleSliderVisibility();

                HandleChangeInItemArrayOrVisibilityL();

                }

            break;

        case ETextToSpeechSettingItemListViewEnumeratedTextPopup2:

            tmp1 = iSettings.EnumeratedTextPopup2();

            item->StoreL();

            tmp2 = iSettings.EnumeratedTextPopup2();

            if ( tmp1 != tmp2 )

                {

                iSettings.iVoice = 

                    iSettings.iVoices[iSettings.EnumeratedTextPopup2()];

                }

            HandleSliderVisibility(); 

            HandleChangeInItemArrayOrVisibilityL();

            break;

        default:

            break;

        }

    item->StoreL();

    }

/**

 *    Handle the "Change" option on the Options menu.  This is an

 *    alternative to the Selection key that forces the settings page

 *    to come up rather than changing the value in place (if possible).

 */

void CTextToSpeechSettingItemList::ChangeSelectedItemL()

    {

    if ( ListBox()->CurrentItemIndex() >= 0 )

        {

        EditItemL( ListBox()->CurrentItemIndex(), ETrue );

        }

    }

/**

 *    Load the initial contents of the setting items.  By default,

 *    the setting items are populated with the default values from

 *     the design.  You can override those values here.

 *    <p>

 *    Note: this call alone does not update the UI.  

 *    LoadSettingsL() must be called afterwards.

 */

void CTextToSpeechSettingItemList::LoadSettingValuesL()

    {

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

    iSettings.iVolume    = iEngine->VolumeL();

    iSettings.iMaxVolume = iEngine->MaxVolumeL();

    iSettings.iVoice     = iEngine->VoiceL();

    iSettings.iLanguages.Reset();

    iEngine->GetLanguagesL( iSettings.iLanguages );

    iSettings.iVoices.Reset();

    iEngine->GetVoicesL( iSettings.iVoices, iSettings.iVoice.iLanguage );

    LoadLanguagesL();

    LoadVoicesL( EFalse );

    iSettings.SetSlider1( iEngine->SpeakingRateL() );

    CAknSettingItem* sliderItem = ( *SettingItemArray() )[3];

    sliderItem->LoadL();

    HandleSliderVisibility();

    // Required when there is only one setting item.

    SettingItemArray()->RecalculateVisibleIndicesL();

    HandleChangeInItemArrayOrVisibilityL();		

    }

/**

 * Add correct languages to popup list

 */

void CTextToSpeechSettingItemList::LoadLanguagesL()

    {

    CAknSettingItemArray* itemArray = SettingItemArray();

    CAknEnumeratedTextPopupSettingItem* item = 

        (CAknEnumeratedTextPopupSettingItem*) (*itemArray)[1];

	// Load texts dynamically.

	CArrayPtr<CAknEnumeratedText>* texts = item->EnumeratedTextArray();

	texts->ResetAndDestroy();

	CAknEnumeratedText* enumText( NULL );

	TInt selectedItem( 0 );

	for ( TInt i( 0 ); i < iSettings.iLanguages.Count(); i++ ) 

	    {

	    TLanguage lang( iSettings.iLanguages[i] );

	    TBuf<8> tmp;	    

	    tmp.Num( (TInt)lang );

	    HBufC* text = tmp.AllocLC();

        enumText = new (ELeave) CAknEnumeratedText( i, text );

    	CleanupStack::PushL( enumText );

	    texts->AppendL( enumText );

	    CleanupStack::Pop( enumText );

	    CleanupStack::Pop( text );

	    if ( lang == iSettings.iVoice.iLanguage )

	        {

	        selectedItem = i;

	        }

	    }

	iSettings.SetEnumeratedTextPopup1( selectedItem );

	item->LoadL();

    }

/**

 * Add correct voice names to popup list

 */    

void CTextToSpeechSettingItemList::LoadVoicesL( TBool aResetSelection )

    {

    CAknSettingItemArray* itemArray = SettingItemArray();

    CAknEnumeratedTextPopupSettingItem* item = 

        (CAknEnumeratedTextPopupSettingItem*) (*itemArray)[2];

	// Load texts dynamically.

	CArrayPtr<CAknEnumeratedText>* texts = item->EnumeratedTextArray();

	texts->ResetAndDestroy();

	CAknEnumeratedText* enumText( NULL );

	TInt selectedItem( 0 );

	for ( TInt i( 0 ); i < iSettings.iVoices.Count(); i++ ) 

	    {

	    HBufC* text = iSettings.iVoices[i].iVoiceName.AllocLC();	    

        enumText = new (ELeave) CAknEnumeratedText( i, text );

        CleanupStack::Pop( text );

    	CleanupStack::PushL( enumText );

	    texts->AppendL( enumText );

	    CleanupStack::Pop( enumText );

	    if ( !aResetSelection && 

	         iSettings.iVoices[i].iVoiceName == iSettings.iVoice.iVoiceName  )

	        {

	        selectedItem = i;

	        }

	    }

	iSettings.SetEnumeratedTextPopup2( selectedItem );

	item->LoadL();

    }

/**

 * Hide slider if current voice doesn't support speaking rate, 

 * otherwise show it. 

 */

void CTextToSpeechSettingItemList::HandleSliderVisibility()

    {

    CAknSettingItem* sliderItem = ( *SettingItemArray() )[3];

    if ( iSettings.iVoice.iVoiceName == _L("DefaultMale") || 

         iSettings.iVoice.iVoiceName == _L("DefaultFemale") )

        {

        sliderItem->SetHidden( ETrue );

        }

    else

        {

        sliderItem->SetHidden( EFalse );

        }

    }

/** 

 * Handle key event (override)

 * @param aKeyEvent key event

 * @param aType event code

 * @return EKeyWasConsumed if the event was handled, else EKeyWasNotConsumed

 */

TKeyResponse CTextToSpeechSettingItemList::OfferKeyEventL( const TKeyEvent& aKeyEvent, 

                                                           TEventCode aType )

    {

    TKeyResponse response( EKeyWasConsumed );

    if ( aKeyEvent.iCode == EKeyLeftArrow )

        {

        iCommandObserver->ProcessCommandL( EKeyDecVolume );

        }

    else if ( aKeyEvent.iCode == EKeyRightArrow )

        {

        iCommandObserver->ProcessCommandL( EKeyIncVolume );

        }

    else

        {

        response = CAknSettingItemList::OfferKeyEventL( aKeyEvent, aType );

        }

    return response;

    }

// End of file