/*

* Copyright (c) 2002 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:  

*     Container control class that will contain a Bio Control.

*  %version : %

*

*/

// INCLUDE FILES

#include <msgbiocontrol.h>

#include <MsgBioUids.h>

#include <msgbiocontrolfactory.h>

#include <bva.rsg>                  // resouce identifiers

#include "BvaAppUi.h"

#include "BvaContainer.h"

#include "bvalog.h"

#include <AknsBasicBackgroundControlContext.h>

#include <AknsDrawUtils.h>

#include <featmgr.h>				// Feature manager

#include <AknUtils.h>                   // AknLayoutUtils

#include <aknlayoutscalable_apps.cdl.h> // LAF

#include <MsgEditorCommon.h>

//  LOCAL CONSTANTS AND MACROS

_LIT8(KBeginVCard,          "BEGIN:VCARD");

_LIT8(KBeginVCalendar,      "BEGIN:VCALENDAR");

_LIT8(KICalVersion,      	"VERSION:2.0");

_LIT(KBvaContainer,"CBvaContainer");

const TInt KNumberOfControls = 1;

// This is an estimate based on observed userid lengths in iCal messages

const TInt KICalLengthNeeded = 255;

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

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

// Symbian OS two phased constructor

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

//

void CBvaContainer::ConstructL(const TRect& aRect)

    {

    LOG("CBvaContainer::ConstructL begin");

    FeatureManager::InitializeLibL();

    CreateWindowL();

    iBgContext = CAknsBasicBackgroundControlContext::NewL(

            KAknsIIDQsnBgAreaMainMessage, aRect, ETrue);

    SetSizeWithoutNotification(aRect.Size());

    SetBlank();

    CreateScrollBarL();

    iLineHeight = MsgEditorCommons::MsgBaseLineDelta();

    iBaseLineOffset = MsgEditorCommons::MsgBaseLineOffset();

    LOG("CBvaContainer::ConstructL end");

    }

void CBvaContainer::LoadBioControlL( const RFile& aFile )

    {

    LOG("CBvaContainer::LoadBioControlL begin");

    SetRect(iEikonEnv->EikAppUi()->ClientRect());

    ActivateL();

    delete iFactory;

    iFactory = NULL;

    iFactory = CMsgBioControlFactory::NewL();

    delete iBioControl;

    iBioControl = NULL;

    TUid bioUid = BioUidL( aFile );

    TRAPD(ret,iBioControl = iFactory->CreateControlL(

    	*static_cast<CBvaAppUi*>(iEikonEnv->EikAppUi()),

        bioUid,

        EMsgBioViewerMode,

        aFile ));

    if(ret == KErrNotFound && bioUid == KMsgBioUidICalendar)

        {

        iBioControl = iFactory->CreateControlL(

        *static_cast<CBvaAppUi*>(iEikonEnv->EikAppUi()),

        KMsgBioUidVCalendar,

        EMsgBioViewerMode,

        aFile );

        }

    else if(ret != KErrNone)

        {

        User::Leave(ret);

        }

    iBioControl->SetContainerWindowL(*this);

    iBioControl->ActivateL();

    UpdateScrollBarL();

    TSize size = Size();

    TInt scrollBarWidth = iScrollBar->ScrollBarBreadth(CEikScrollBar::EVertical);

    size.iWidth -= scrollBarWidth;

    iBioControl->SetAndGetSizeL(size);

    iBioControl->SetExtent(TPoint(0,0),iBioControl->Size());

    UpdateScrollBarL();

    DrawNow();

    LOG("CBvaContainer::LoadBioControlL end");

    }

// Destructor

CBvaContainer::~CBvaContainer()

    {

    FeatureManager::UnInitializeLib();

    delete iBioControl;

    delete iFactory;

    delete iScrollBar;

    delete iBgContext;

    }

void CBvaContainer::SizeChanged()

    {

    if ( iBgContext )

        {

        iBgContext->SetRect( Rect() );

        iBgContext->SetParentPos( PositionRelativeToScreen() );

       }

    if( iBioControl )

    	{

    	//the scrollbar width is deducted from the viewer width

    	//this ensures that the scrollbar is not blocked by it

    	TSize size = iEikonEnv->EikAppUi()->ClientRect().Size();

    	TInt scrollBarWidth = iScrollBar->ScrollBarBreadth(CEikScrollBar::EVertical);

    	size.iWidth -= scrollBarWidth;

    	TRAP_IGNORE(iBioControl->SetAndGetSizeL(size));

    	iBioControl->SetExtent(TPoint(0,0), iBioControl->Size());

    	TRAP_IGNORE( UpdateScrollBarL() );

    	}

    }

TInt CBvaContainer::CountComponentControls() const

    {

    TInt countScrollBarComponents( 0 );

    if ( iScrollBar )

        {

        countScrollBarComponents = iScrollBar->CountComponentControls();

        }

    if (!iBioControl)

        {

        return countScrollBarComponents;

        }

    return countScrollBarComponents + KNumberOfControls ;

    }

CCoeControl* CBvaContainer::ComponentControl(TInt aIndex) const

    {

    TInt countScrollBarComponents( 0 );

    if ( iScrollBar )

        {

        countScrollBarComponents = iScrollBar->CountComponentControls();

        }

    switch ( aIndex )

        {

        case 0:

            {

            if( iBioControl )

                {

                return iBioControl;

                }

            else if( iScrollBar )

                {

                return iScrollBar->ComponentControl( aIndex );

                }

            }

        default:

            if (    iScrollBar

                &&  aIndex >= KNumberOfControls

                &&  aIndex < countScrollBarComponents + KNumberOfControls )

                {

                return iScrollBar->ComponentControl( aIndex - KNumberOfControls );

                }

            else

                {

                }

            return NULL;

         }

    }

TTypeUid::Ptr CBvaContainer::MopSupplyObject(TTypeUid aId)

	{

    if (aId.iUid == MAknsControlContext::ETypeId)

        {

        return MAknsControlContext::SupplyMopObject( aId, iBgContext );

        }

    return CCoeControl::MopSupplyObject(aId);

	}

TKeyResponse CBvaContainer::OfferKeyEventL(

    const TKeyEvent& aKeyEvent,

    TEventCode aType)

    {

    TKeyResponse keyResp( EKeyWasNotConsumed );

    if (!iBioControl)

        {

        return EKeyWasNotConsumed;

        }

    if(aKeyEvent.iCode == EKeyEnter	)

    {

    iEikonEnv->EikAppUi()->HandleCommandL(EAknSoftkeyContextOptions);	

    return EKeyWasConsumed;

    }

    keyResp = iBioControl->OfferKeyEventL(aKeyEvent, aType);

    UpdateScrollBarL();

    return keyResp;

    }

CMsgBioControl& CBvaContainer::BioControl()

    {

    __ASSERT_DEBUG(iBioControl, Panic(EBioControlNotExist));

    return *iBioControl;

    }

TUid CBvaContainer::BioUidL(const TFileName& aFileName, RFs& aFs )

    {

    RFile file;

    User::LeaveIfError(file.Open(aFs,aFileName,EFileRead));

    CleanupClosePushL(file); // file on CS

    return BioUidL( file );

    }

 TUid CBvaContainer::BioUidL( const RFile& aFile )

 	{

 	LOG("CBvaContainer::BioUidL begin");

 	TInt size;

    User::LeaveIfError(aFile.Size(size));

    if (!size)

        {

        // File reading failed.

        User::Leave(KErrNotFound);

        }

    HBufC8* dataBuf = HBufC8::NewLC(KICalLengthNeeded); // dataBuf on CS

    TPtr8 data(dataBuf->Des());

    User::LeaveIfError(aFile.Read(data, KICalLengthNeeded));

	TInt lengthNeeded = KBeginVCalendar().Length();

    // Compare file length to text string

    TInt length = dataBuf->Length();

    if (length < lengthNeeded)

        {

        User::Leave(KErrCorrupt);

        }

    // Compare beginning of read buffer with text strings.

    if ( dataBuf->Left( KBeginVCard().Length() ).CompareF(KBeginVCard) == 0)

        {

        CleanupStack::PopAndDestroy(dataBuf); // dataBuf

        return KMsgBioUidVCard;

        }

    else if (

    		dataBuf->FindF(KICalVersion) != KErrNotFound &&

        	dataBuf->FindF(KBeginVCalendar) != KErrNotFound

        	)

        {

        CleanupStack::PopAndDestroy(dataBuf); // dataBuf

        if ( FeatureManager::FeatureSupported( KFeatureIdMeetingRequestSupport ) )

        	{

          	return KMsgBioUidICalendar;	// we use ICalBC to launch the Meeting Request Viewers

        	}

      	else

        	{

          	return KMsgBioUidVCalendar;	// VCalBC is used to open iCal message

          	}

        }

    else if (

        dataBuf->FindF(KICalVersion) == KErrNotFound &&

        dataBuf->FindF(KBeginVCalendar) != KErrNotFound

        )

        {

        CleanupStack::PopAndDestroy(dataBuf); // dataBuf

        return KMsgBioUidVCalendar;

        }

    CleanupStack::PopAndDestroy(dataBuf); // dataBuf

    LOG("CBvaContainer::BioUidL end");

    User::Leave(KErrNotSupported);

    // Never reached.  A compilation warning is avoided if null TUid returned.

    return TUid::Null();

    }

void CBvaContainer::Panic(TInt aCode) const

    {

    User::Panic(KBvaContainer, aCode);

    }

void CBvaContainer::Draw(const TRect& aRect) const

	{

	CWindowGc& gc = SystemGc();

    MAknsSkinInstance* skin = AknsUtils::SkinInstance();

    MAknsControlContext* cc = AknsDrawUtils::ControlContext( this );

    if( !AknsDrawUtils::Background( skin, cc, this, gc, aRect ) )

    	{

        // Same as CCoeControl draw for blank controls

        CGraphicsContext& gcBlank = SystemGc();

        gcBlank.SetPenStyle( CGraphicsContext::ENullPen );

        gcBlank.SetBrushStyle( CGraphicsContext::ESolidBrush );

        gcBlank.DrawRect( aRect );

      }

	}

void CBvaContainer::HandleResourceChange( TInt aType )

	{

    CCoeControl::HandleResourceChange( aType );

    switch( aType )

		{

        case KEikDynamicLayoutVariantSwitch:

        	{

        	iLineHeight = MsgEditorCommons::MsgBaseLineDelta();

            iBaseLineOffset = MsgEditorCommons::MsgBaseLineOffset();

        	SetRect(iEikonEnv->EikAppUi()->ClientRect());

        	AknLayoutUtils::LayoutVerticalScrollBar(

                iScrollBar,

                TRect( TPoint( 0, 0 ), iEikonEnv->EikAppUi()->ClientRect().Size() ),

                AknLayoutScalable_Apps::scroll_pane_cp017().LayoutLine() );

    		SizeChanged();

			break;

			}

        default:

            // fall through

            break;

		}

	}

TBool CBvaContainer::IsBioControl()

    {

    if(iBioControl)

        return ETrue;

    else

        return EFalse;

    }

void CBvaContainer::CreateScrollBarL()

    {

    iScrollBar = new ( ELeave ) CEikScrollBarFrame(

        this,  // CCoeControl* aParentWindow

        this,  // MEikScrollBarObserver* aObserver

        ETrue  // TBool aPreAlloc=EFalse

        );

    // Check which type of scrollbar is to be shown

    CAknAppUiBase* appUi = static_cast<CAknAppUiBase*>( iEikonEnv->EikAppUi() );

    if ( AknLayoutUtils::DefaultScrollBarType( appUi ) ==

        CEikScrollBarFrame::EDoubleSpan )

        {

        // For EDoubleSpan type scrollbar

        // non-window owning scrollbar

        iScrollBar->CreateDoubleSpanScrollBarsL( EFalse, EFalse, ETrue, EFalse );

        iScrollBar->SetTypeOfVScrollBar( CEikScrollBarFrame::EDoubleSpan );

        AknLayoutUtils::LayoutVerticalScrollBar(

            iScrollBar,

            TRect( TPoint( 0, 0 ), iEikonEnv->EikAppUi()->ClientRect().Size() ),

            AknLayoutScalable_Apps::scroll_pane_cp017().LayoutLine() );

        }

    else

        {

        // For EArrowHead type scrollbar

        iScrollBar->SetTypeOfVScrollBar( CEikScrollBarFrame::EArrowHead );

        }

    iScrollBar->SetScrollBarVisibilityL(

        CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto );

    }

void CBvaContainer::UpdateScrollBarL()

    {

    TEikScrollBarModel horzModel;

    TEikScrollBarModel vertModel;

    TInt height;

    TInt pos;

    GetVirtualFormHeightAndPos( height, pos );

#ifdef _DEBUG

    // CAknScrollIndicator::SetPosition has an __ASSERT_DEBUG

    // for range check even if the control handles out-of-range

    // values properly.

    if ( pos > height ) pos = height;

    if ( pos < -1 )     pos = -1;

#endif

    vertModel.iScrollSpan = height;

    vertModel.iThumbSpan  = iEikonEnv->EikAppUi()->ClientRect().Height();

    if ( height > iEikonEnv->EikAppUi()->ClientRect().Height() )

        {

        vertModel.iThumbPosition = pos;

        }

    else

        {

        vertModel.iThumbPosition = 0;

        }

    TEikScrollBarFrameLayout layout;

    if ( iScrollBar && iScrollBar->TypeOfVScrollBar() == CEikScrollBarFrame::EDoubleSpan )

        {

        // For EDoubleSpan type scrollbar

        if ( vertModel.iScrollSpan == vertModel.iThumbPosition )

            {

            vertModel.iThumbPosition--;

            }

        TAknDoubleSpanScrollBarModel hDsSbarModel( horzModel );

        TAknDoubleSpanScrollBarModel vDsSbarModel( vertModel );

        layout.iTilingMode = TEikScrollBarFrameLayout::EInclusiveRectConstant;

        // It seems to be important that we have separate

        // variable for "inclusiveRect" and "clientRect"

        TRect inclusiveRect( Rect() );

        TRect clientRect( Rect() );

        iScrollBar->TileL( &hDsSbarModel, &vDsSbarModel, clientRect, inclusiveRect, layout );

        iScrollBar->SetVFocusPosToThumbPos( vDsSbarModel.FocusPosition() );

        }

    else

        {

        TRect rect( Rect() );

        iScrollBar->TileL( &horzModel, &vertModel, rect, rect, layout );

        iScrollBar->SetVFocusPosToThumbPos( vertModel.iThumbPosition );

        }

    }

void CBvaContainer::GetVirtualFormHeightAndPos( TInt& aHeight, TInt& aPos )

    {

    aHeight = iBioControl->VirtualHeight();

    aPos = iBioControl->VirtualVisibleTop();

    }

#ifdef RD_SCALABLE_UI_V2

void CBvaContainer::HandleScrollEventL(CEikScrollBar* aScrollBar, TEikScrollEvent aEventType)

    {

    switch ( aEventType )

        {

        case EEikScrollUp:

            {

            //ensure that we scroll 2 lines

            ScrollViewL(iLineHeight*2 , EMsgScrollUp, ETrue );

            break;

            }

        case EEikScrollDown:

            {

            //ensure that we scroll 2 lines

            ScrollViewL( iLineHeight*2, EMsgScrollDown, ETrue );

            break;

            }

        case EEikScrollTop:

            {

            // Not supported yet.

            break;

            }

        case EEikScrollBottom:

            {

            // Not supported yet.

            break;

            }

        case EEikScrollThumbReleaseVert:

            {

            // Not implemented yet

            break;

            }

        case EEikScrollPageUp:

        case EEikScrollPageDown:

        case EEikScrollThumbDragVert:

            {

            TInt scrolledPixels(iBioControl->VirtualVisibleTop() - aScrollBar->ThumbPosition());

			//the scrolled amount have to be manipulated to be atleast

			//one line height of pixels

			if(aScrollBar->ThumbPosition() + iBioControl->VirtualVisibleTop() <=

				iBioControl->VirtualHeight() - iLineHeight)

				{

            	if(Abs(scrolledPixels) >= iLineHeight)

                	{

                	scrolledPixels += ( scrolledPixels % (iLineHeight));

                	}

				else

					{

                	scrolledPixels -= iLineHeight;

                	}

				}

			else

				{

				scrolledPixels -= (iLineHeight);

				}

            if ( scrolledPixels != 0 )

                {

                ScrollViewL( Abs( scrolledPixels ),

                             scrolledPixels > 0 ? EMsgScrollUp :

                                                  EMsgScrollDown,

                             EFalse );

				UpdateScrollBarL();

                }

            break;

            }

        default: