/*

* Copyright (c) 2002-2009 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: 

*     Support for CheckBoxes in Popped up setting pages

*

*/

#include "akncheckboxsettingpage.h"

// For icon support

#include <gulicon.h>

#include <barsread.h>

// For icon array support

#include <AknIconArray.h>

// lists

#include <aknlists.h>

#include <AknTasHook.h>

// Used for setting 0 and 1 in the radio button

    _LIT(KOneSlashT, "1\t");

// Selectable Item Array

EXPORT_C CSelectableItem::CSelectableItem( TDesC& aItem, TBool aSelected ) :

    iDesC(aItem), iSelected( aSelected )

    {

    }

EXPORT_C void CSelectableItem::ConstructL()

    {

    iItem = iDesC.AllocL();

    }

CSelectableItem::~CSelectableItem()

    {

    delete ( iItem );

    }

EXPORT_C void CSelectableItem::SetSelectionStatus( TBool aSelected )

    {

    iSelected = aSelected;

    }

EXPORT_C TBool CSelectableItem::SelectionStatus()

    {

    return iSelected;

    }

EXPORT_C TPtrC CSelectableItem::ItemText()

    {

    return (TPtrC)(*iItem);

    }

EXPORT_C CSelectionItemList::CSelectionItemList(TInt aGranularity) : CArrayPtrFlat<CSelectableItem>( aGranularity )

    {

    }

EXPORT_C TInt CSelectionItemList::MdcaCount() const

    {

    return Count();

    }

EXPORT_C TPtrC CSelectionItemList::MdcaPoint(TInt anIndex) const

    {

    return ( (TPtrC)(   (At(anIndex))->ItemText()   ));

    }

// Extension for CAknCheckBoxSettingPage

NONSHARABLE_CLASS(CAknCheckBoxSettingPageExtension): public CBase

    {

public:

    CAknCheckBoxSettingPageExtension();

public:

    TBool iIsDragged;

    };

CAknCheckBoxSettingPageExtension::CAknCheckBoxSettingPageExtension()

    : iIsDragged(EFalse)

    {

    }

//////////////////////////////////////////////////////////////////////

// Construction/Destruction

//////////////////////////////////////////////////////////////////////

/**

 * Destructor

 *

 */

EXPORT_C CAknCheckBoxSettingPage::~CAknCheckBoxSettingPage()

    {

    AKNTASHOOK_REMOVE();

    delete (iInternalItemArray);

    delete iExtension;

    }

EXPORT_C CAknCheckBoxSettingPage::CAknCheckBoxSettingPage( TInt aResourceId, CSelectionItemList* aItemArray):

     CAknListBoxSettingPage(aResourceId), iItemArray(aItemArray)

    {

    AKNTASHOOK_ADD( this, "CAknCheckBoxSettingPage" );

    }

EXPORT_C CAknCheckBoxSettingPage::CAknCheckBoxSettingPage(

            const TDesC* aSettingText,

            TInt aSettingNumber,

            TInt aControlType,

            TInt aEditorResourceId,

            TInt aSettingPageResourceId,

            CSelectionItemList* aItemArray )

            :   CAknListBoxSettingPage(

                aSettingText,

                aSettingNumber,

                aControlType,

                aEditorResourceId,

                aSettingPageResourceId ),

                iItemArray(aItemArray)

    {

    AKNTASHOOK_ADD( this, "CAknCheckBoxSettingPage" );

    }

EXPORT_C void CAknCheckBoxSettingPage::ConstructL()

    {

    BaseConstructL();

    iExtension = new(ELeave) CAknCheckBoxSettingPageExtension;

    CreateCheckBoxBitmapsL();

    GenerateInternalArrayAndGiveToListBoxL();

    // This updates the CBA

    CheckAndSetDataValidity();

    UpdateCbaL();

    // Only a reference to the CBase object; not owned

    CAknSetStyleListBox* listBox = ListBoxControl();

    listBox->SetListBoxObserver(this);

    // Set the scroller indication to appear when needed

    listBox->CreateScrollBarFrameL(ETrue, ETrue);

    listBox->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EOff,CEikScrollBarFrame::EAuto);

    listBox->ItemDrawer()->FormattedCellData()->SetDrawScrollbarBackground( EFalse );

    listBox->ScrollBarFrame()->VerticalScrollBar()->SetMopParent(this);

    listBox->UpdateScrollBarsL();

    if(!IsBackgroundDrawingEnabled())

        	listBox->ScrollBarFrame()->DrawBackground(EFalse, EFalse);

    // To force the layout

    SizeChanged();

    // check and change MSK according to item selection status

    CEikButtonGroupContainer *bgc;

    CCoeControl* MSK(NULL);

    CEikCba* cba(NULL);

    MopGetObject(bgc);

    TInt newResourceId(NULL);    

    if (bgc)

        {

		cba = ( static_cast<CEikCba*>( bgc->ButtonGroup() ) ); // downcast from MEikButtonGroup

		if (cba)

		    {

		    MSK = cba->Control(3); // MSK's position is 3

		    }

        }

    TInt currentSelectionIndex = listBox->CurrentItemIndex();

    if( iItemArray && iItemArray->Count() > 0 )

        {

        if (MSK && ( (cba->ControlId(MSK) == EAknSoftkeyMark) ||

                     (cba->ControlId(MSK) == EAknSoftkeyUnmark) ))

            {

            if( (*iItemArray)[currentSelectionIndex]->SelectionStatus() )

                {

                newResourceId = R_AVKON_SOFTKEY_UNMARK;

                }

            else

                {

                newResourceId = R_AVKON_SOFTKEY_MARK;

                }

            }

        if (newResourceId)

            {

            bgc->SetCommandL(3,newResourceId);

            cba->DrawNow();

            }

        }

    // Construct an appropriate control context for the contained editor areas.

    // Context produced is owned by CAknSettingPage.

    SetEditedItemFrameIID( KAknsIIDQsnFrSetOpt, KAknsIIDQsnFrSetOptCenter );

    }

EXPORT_C void CAknCheckBoxSettingPage::HandleListBoxEventL(CEikListBox* /*aListBox*/,

        MEikListBoxObserver::TListBoxEvent aEventType)

    {

    if (!iExtension)

        {

        iExtension = new (ELeave) CAknCheckBoxSettingPageExtension;

        }

    switch ( aEventType )

        {

        // Fall through these things that should all cause the selection to change

        case MEikListBoxObserver::EEventEnterKeyPressed:

        case MEikListBoxObserver::EEventItemActioned:

        case MEikListBoxObserver::EEventItemClicked:

        case MEikListBoxObserver::EEventItemSingleClicked:

            // select when no dragging

            if ( !iExtension->iIsDragged )

                {

                ToggleSelectionL();

                UpdateSettingL();

                }

            break;

        case MEikListBoxObserver::EEventItemDraggingActioned:

        case EEventPanningStarted:

        case EEventFlickStarted:

            iExtension->iIsDragged = ETrue;

            break;

        case MEikListBoxObserver::EEventPenDownOnItem:         

            iExtension->iIsDragged = EFalse;

            if( iSettingPageObserver )

                iSettingPageObserver->HandleSettingPageEventL(this, MAknSettingPageObserver::EEventSettingChanged);

            break;

        default:

            break;

        }

    }

void CAknCheckBoxSettingPage::ToggleSelectionL()

    {

    CAknSetStyleListBox* listBox = ListBoxControl();

    CListBoxView* view = listBox->View();

    TInt currentSelectionIndex = listBox->CurrentItemIndex();

    TInt newResourceId(NULL);

    // Toggle based upon current master status

    if( iItemArray && iItemArray->Count() > 0 )

        {

        if( (*iItemArray)[currentSelectionIndex]->SelectionStatus() )

            {

            view->DeselectItem( currentSelectionIndex );

            ( (*iItemArray)[ currentSelectionIndex ] )->SetSelectionStatus( EFalse );

            newResourceId = R_AVKON_SOFTKEY_MARK;

            }

        else

            {

            view->SelectItemL( currentSelectionIndex );

            ( (*iItemArray)[ currentSelectionIndex ] )->SetSelectionStatus( ETrue );

            newResourceId = R_AVKON_SOFTKEY_UNMARK;

            }

        }

    // if the selection came from Mark/Unmark event from MSK, toggle also MSK

    CEikButtonGroupContainer *bgc;

    CCoeControl* MSK(NULL);

    CEikCba* cba(NULL);

    MopGetObject(bgc);

    if (bgc)

        {

		cba = ( static_cast<CEikCba*>( bgc->ButtonGroup() ) ); // downcast from MEikButtonGroup

		if (cba)

		    {

		    MSK = cba->Control(3); // MSK's position is 3

		    }

        }

    if (MSK && ( (cba->ControlId(MSK) == EAknSoftkeyMark) ||

                 (cba->ControlId(MSK) == EAknSoftkeyUnmark) ))

        {

        if (newResourceId)

            {

            bgc->SetCommandL(3,newResourceId);

            cba->DrawNow();

            }

        }

    if( iSettingPageObserver )

        iSettingPageObserver->HandleSettingPageEventL(this, MAknSettingPageObserver::EEventSettingChanged);

    }

EXPORT_C void CAknCheckBoxSettingPage::UpdateSettingL()

    {

    }

EXPORT_C CAknSetStyleListBox* CAknCheckBoxSettingPage::ListBoxControl() const

    {

    return STATIC_CAST( CAknSetStyleListBox*, EditorControl());

    }

EXPORT_C void CAknCheckBoxSettingPage::DynamicInitL()

    {

    }

void CAknCheckBoxSettingPage::UpdateAllSelections()

    {

    TInt nItems = iItemArray->Count();

    CAknSetStyleListBox* listBox = ListBoxControl();

    CListBoxView* view = listBox->View();

    for (TInt ii=0; ii<nItems; ii++)

        {

        (*iItemArray)[ ii ]->SetSelectionStatus( view->ItemIsSelected( ii ) );

        }

    }

void CAknCheckBoxSettingPage::SetAllSelectionsL()

    {

    TInt nItems = iItemArray->Count();

    CAknSetStyleListBox* listBox = ListBoxControl();

    CListBoxView* view = listBox->View();

    for (TInt ii=0; ii<nItems; ii++)

        {

        if ( (*iItemArray)[ ii ]->SelectionStatus() )

            view->SelectItemL( ii );

        else

            view->DeselectItem( ii );

        }

    }

/**

 * Processes events from the softkeys. (Or tranlated from key events)

 *

 *

 * @param   aCommandId  Event Id from the soft-key

 */

EXPORT_C void CAknCheckBoxSettingPage::ProcessCommandL(TInt aCommandId)

    {

    HideMenu();

    // Respond to softkey events

    switch (aCommandId)

        {

        case EAknSoftkeySelect:

        case EAknSoftkeyMark:

        case EAknSoftkeyUnmark:

            if ( AknLayoutUtils::PenEnabled() )

                {

                if (ListBoxControl()->View()->ItemIsVisible(ListBoxControl()->View()->CurrentItemIndex()))

                    {

                    SelectCurrentItemL();

                    }

                else

                    {

                    // No exit in this case

                    ListBoxControl()->View()->ScrollToMakeItemVisible(ListBoxControl()->View()->CurrentItemIndex());

                    ListBoxControl()->UpdateScrollBarsL();

                    }

                }

            else

                {

                SelectCurrentItemL(); // No exit in this case

                }

            break;

        case EAknSoftkeyOk:

        case EAknSoftkeyDone:

            if ( AknLayoutUtils::PenEnabled() )

                {

                // Pen support changes selection only in the view, do update for items here.

                UpdateAllSelections();

                }

            AttemptExitL(ETrue);

            break;

        case EAknSoftkeyBack:

        case EAknSoftkeyCancel:

            AttemptExitL(EFalse);

            break;

        case EAknSoftkeyOptions:

            DisplayMenuL();

            break;

        default:

            break;

        }

    }

EXPORT_C void CAknCheckBoxSettingPage::SelectCurrentItemL()

    {

    ToggleSelectionL();

    UpdateSettingL();

    }

void CAknCheckBoxSettingPage::GenerateInternalArrayAndGiveToListBoxL()

    {

    delete iInternalItemArray;

    iInternalItemArray = 0;

// Make a new owned text array from the input one:

    iInternalItemArray = new(ELeave)CDesCArrayFlat(1);

    TInt nItems = iItemArray->Count();

    for (TInt ii=0; ii<nItems; ii++)

        {

        // Fill up the control-owned space for the modified buffers:

        TInt newLen = ((*iItemArray)[ii]->ItemText()).Length() + KOneSlashT().Length();

        HBufC* newText = HBufC::NewMaxLC( newLen );

        TPtr newTPtr = newText->Des();

        newTPtr.Copy( KOneSlashT );

        newTPtr.Append( ((*iItemArray)[ii])->ItemText() );

        // A copy of the new buffer goes to the internal itemarray:

        iInternalItemArray->AppendL(newTPtr);

        CleanupStack::PopAndDestroy(); // newText

        }

    CAknSetStyleListBox* listBox = ListBoxControl();

    CTextListBoxModel* model=listBox->Model();

    model->SetItemTextArray(iInternalItemArray);

    model->SetOwnershipType(ELbmDoesNotOwnItemArray);

    //

    // let the list box not throw away pointer event 

    //

    if( nItems > 0)

        {	

        CArrayFix<TInt>* tmp = new(ELeave)CArrayFixFlat<TInt>(nItems);  

        CleanupStack::PushL( tmp );    

        for(TInt i=0; i<nItems; i++)

            {

            tmp->AppendL( i );

            }

        listBox->SetPointerEventFilterDisabledL( *tmp );         

        CleanupStack::PopAndDestroy( tmp );

        }

// Transfer the selected status from the input array into the listbox view:

    SetAllSelectionsL();

    }

EXPORT_C void CAknCheckBoxSettingPage::SetSelectionItemArrayL( CSelectionItemList* aItemArray )

    {

    iItemArray = aItemArray;

    GenerateInternalArrayAndGiveToListBoxL();

    // This updates the CBA

    CheckAndSetDataValidity();

    UpdateCbaL();

    SizeChanged();

    DrawDeferred();

    }

/**

 * Writes the internal state of the control and its components to aStream.

 * Does nothing in release mode.

 * Designed to be overidden and base called by subclasses.

 */

#ifndef _DEBUG

EXPORT_C void CAknCheckBoxSettingPage::WriteInternalStateL(RWriteStream& /*aWriteStream*/) const

    {}

#else

EXPORT_C void CAknCheckBoxSettingPage::WriteInternalStateL(RWriteStream& aWriteStream) const

    {

    CAknSettingPage::WriteInternalStateL(aWriteStream);

    }

#endif

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

// CAknCheckBoxSettingPage::HandlePointerEventL()

// Handles pointer events by removing Shift and Control button modifiers from it and

// sends modified pointerevent to CEikListbox. This prevents multiselection

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

//

EXPORT_C void CAknCheckBoxSettingPage::HandlePointerEventL(const TPointerEvent& aPointerEvent)

    {

    if ( !iExtension )

        {

        iExtension = new(ELeave) CAknCheckBoxSettingPageExtension;

        }

    TPointerEvent newPointerEvent = aPointerEvent;

    // Remove Shift and Ctrl modifiers from PointerEvent

    newPointerEvent.iModifiers &= ~EModifierShift;

    newPointerEvent.iModifiers &= ~EModifierCtrl;

    // If click on an item, pressed down state draw. After dragging to other item

    // or outside, item can not be selected.        

    CAknSetStyleListBox* listbox = ListBoxControl();

    TInt index;

    if ( newPointerEvent.iType == TPointerEvent::EButton1Down 

        && listbox->View()->XYPosToItemIndex( newPointerEvent.iPosition, index ))

        {

        listbox->View()->ItemDrawer()->SetFlags( CListItemDrawer::EPressedDownState );

        }

    else if ( aPointerEvent.iType == TPointerEvent::EDrag 

              && !listbox->Rect().Contains( aPointerEvent.iPosition ))

        {