/*

* Copyright (c) 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:

* Export help related files.

*

*/

// INCLUDE FILES

#include    "cimcvapptextviewcontrol.h"

#include 	"cimcvappcustomdraw.h"

#include    <frmtview.h>    // CTextView

#include    <AknUtils.h>

#include    <avkon.mbg>

#include    <aknappui.h>

#include 	"mimcvapptextview.h"

#include    <aknlayoutscalable_apps.cdl.h>

#include    <AknsBasicBackgroundControlContext.h>

#include    <AknsDrawUtils.h>

#include 	"imcvlogger.h"

#include 	"imcvuiapputils.h"

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

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

// CIMCVAppTextViewControl::CIMCVAppTextViewControl

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CIMCVAppTextViewControl::CIMCVAppTextViewControl() 

    {

    }

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

// CIMCVAppTextViewControl::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CIMCVAppTextViewControl::ConstructL( const TRect& aRect, 

                                     const CCoeControl& aParent,

                                     MLayDoc* aTextLayout )

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::ConstructL()	start") ); 

    CreateWindowL( &aParent );

    // get the drawing device

    CWindowGc& gc = SystemGc();

    CBitmapDevice* device = static_cast<CBitmapDevice*>( gc.Device() );    

    // create text layout and text view

    iViewRect = aRect;

    iClipping = new ( ELeave ) RRegion( aRect );

    iLayout = CTextLayout::NewL( aTextLayout, iViewRect.Width() );

    iTextView = CTextView::NewL( iLayout, iViewRect,

                device, device, &Window(), NULL, &iCoeEnv->WsSession() );

    iTextView->EnableFlickerFreeRedraw();

    iTextView->SetOpaque( ETrue );    

    // create our background drawer

    iCustomDraw = new( ELeave )CIMCVAppCustomDraw( iViewRect );

    iLayout->SetCustomDraw( iCustomDraw );

    // and scrollbar

    if( IMCVUiAppUtils::PenEnabled() )

        {

        // Observer

        iScrollBar = new( ELeave )CEikScrollBarFrame( this, this );

        }

    else

        {

        // No observer

        iScrollBar = new( ELeave )CEikScrollBarFrame( this, NULL );

        }

    if (AknLayoutUtils::DefaultScrollBarType(iAvkonAppUi) == CEikScrollBarFrame::EDoubleSpan)

        { 

        // For EDoubleSpan type scrollbar

        // If pen is supported, SB needs to own a window

        iScrollBar->CreateDoubleSpanScrollBarsL( IMCVUiAppUtils::PenEnabled(), 

                                                 EFalse, ETrue, EFalse );

        iScrollBar->SetTypeOfVScrollBar(CEikScrollBarFrame::EDoubleSpan);

        }

    else

        {

        // For EArrowHead type scrollbar

        iScrollBar->SetTypeOfVScrollBar(CEikScrollBarFrame::EArrowHead);

        }

    iScrollBar->SetScrollBarVisibilityL( CEikScrollBarFrame::EOff, 

                                         CEikScrollBarFrame::EOn );

    TEikScrollBarModel vSbarModel;

    vSbarModel.iThumbPosition = 0; // current position

    vSbarModel.iScrollSpan = 0; // how many items

    vSbarModel.iThumbSpan = 0; // ignored

    iScrollBar->Tile( &vSbarModel );

    iScrollBar->SetVFocusPosToThumbPos( vSbarModel.iThumbPosition );

    iBgContext = CAknsBasicBackgroundControlContext::NewL( 

        KAknsIIDQsnBgAreaMain, Rect(), ETrue );

    iCustomDraw->SetBackgroundContext( iBgContext, this );

    // set extensions

    ActivateL();    

    // we're ready

    static_cast<CCoeAppUi*>( iEikonEnv->AppUi() )->AddToStackL( this );

    iAddedToStack = ETrue;

    // Enable draging

    if ( DrawableWindow() && IMCVUiAppUtils::PenEnabled() )

        {

        EnableDragEvents();       

        Window().SetPointerGrab( ETrue );

        }

    // Enable draging

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::ConstructL()	end") ); 

    }

// Destructor

CIMCVAppTextViewControl::~CIMCVAppTextViewControl()

    {

    if( iAddedToStack )

        {

        static_cast<CCoeAppUi*>( iEikonEnv->AppUi() )->RemoveFromStack( this );

        }

    delete iScrollBar;

    delete iCustomDraw;

    delete iTextView;

    delete iLayout;

    delete iBgContext;

    if( iClipping )

        {

        iClipping->Destroy();

        iClipping  = NULL;

        }

    }

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

// CIMCVAppTextViewControl::UpdateScrollBarsL

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

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

//

void CIMCVAppTextViewControl::UpdateScrollBarsL( TBool aScrollDraw /*ETrue*/ )

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::UpdateScrollBarsL()	start") ); 

    TInt height = iLayout->FormattedHeightInPixels();

    TInt span = iViewRect.Height();

    TInt pos = iLayout->PixelsAboveBand();

    if( span < 0 )

        {

        span = 0;

        }

    if( pos < 0 )

        {

        pos = 0;

        }

    TEikScrollBarModel vSbarModel;

    vSbarModel.iThumbPosition = pos; // current position

    vSbarModel.iScrollSpan = height; // total length

    vSbarModel.iThumbSpan = span; // bar length

    // Double span

    if( iScrollBar )

        {

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

            {

            TAknDoubleSpanScrollBarModel vDsModel( vSbarModel );

            iScrollBar->Tile( &vDsModel );

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

            }

        // ArrowHead

        else

            {

            iScrollBar->Tile( &vSbarModel );

            iScrollBar->SetVFocusPosToThumbPos( vSbarModel.iThumbPosition );

            }

       if( aScrollDraw )

            {

            iScrollBar->DrawScrollBarsNow();

            }

        }

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::UpdateScrollBarsL()	end") ); 

    }

void CIMCVAppTextViewControl::UpdateChatViewL ()

{

	UpdateViewL ();

}

void CIMCVAppTextViewControl:: SmileyDialogLaunched (TBool aLaunched)

{

	iSmileyDialogLaunched = aLaunched;

}

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

// CIMCVAppTextViewControl::UpdateViewL

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

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

//

void CIMCVAppTextViewControl::UpdateViewL()

    {

	// do not refresh if smiley dialog is launched.

	if (iSmileyDialogLaunched)

		return;

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::UpdateViewL()	start") ); 

    iTextView->FormatTextL();

    iTextView->SetSelectionVisibilityL( EFalse );

    TCursorSelection sel;

    // Don't scroll if some item is highlighted

    if ( !iIsHighlighted )

        {

        sel = TCursorSelection( iLayout->DocumentLength(), 0 );

        ScrollVisibleL( sel, ETrue );

         }

    else

        {

        sel = iTextView->Selection();

        ScrollVisibleL( sel, ETrue );

         }

    DrawDeferred();

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::UpdateViewL()	end") ); 

    }

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

// CIMCVAppTextViewControl::SetHighlighted

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

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

//

void CIMCVAppTextViewControl::SetHighlighted( TBool aIsHighlighted )

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::SetHighlighted()	start") ); 

    iIsHighlighted = aIsHighlighted;

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::SetHighlighted()	end") ); 

    }

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

// CIMCVAppTextViewControl::ScrollBarFrame

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

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

//

const CEikScrollBarFrame* CIMCVAppTextViewControl::ScrollBarFrame()

    {

    return iScrollBar;

    }

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

// CIMCVAppTextViewControl::ScrollBarFrame

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

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

//

TInt CIMCVAppTextViewControl::FindDocPos( TPoint aPoint )

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::FindDocPos()	start") ); 

    TTmPosInfo2 posInfo;

    TBool found = EFalse;

    TRAPD( err, found = iTextView->FindXyPosL( aPoint, posInfo ) );

    if ( err )

        {

        CActiveScheduler::Current()->Error( err );

        // Return not found

        return KErrNotFound;

        }

    if ( found )

        {

        return posInfo.iDocPos.iPos;

        }

    // not found

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::FindDocPos()	end") );

    return KErrNotFound;

    }

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

// CIMCVAppTextViewControl::MopSupplyObject

//

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

//

TTypeUid::Ptr CIMCVAppTextViewControl::MopSupplyObject( TTypeUid aId )

    {   

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::MopSupplyObject()	start") ); 

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

        {

        return MAknsControlContext::SupplyMopObject( aId, iBgContext );

        }

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::MopSupplyObject()	end") );

    return CCoeControl::MopSupplyObject( aId );

    }

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

// CIMCVAppTextViewControl::HandleScrollEventL

//

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

//

void CIMCVAppTextViewControl::HandleScrollEventL( CEikScrollBar* /*aScrollBar*/,

                                             TEikScrollEvent aEventType )

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::HandleScrollEventL()	start") ); 

    switch( aEventType )

        {

        case EEikScrollUp:

            {

            ScrollLinesL( 1 );

            break;

            }

    	case EEikScrollDown:

    	    {

            ScrollLinesL( -1 );

    	    break;

    	    }

    	case EEikScrollPageUp:

    	    {

            iTextView->ScrollDisplayL( TCursorPosition::EFPageUp );

            UpdateScrollBarsL();

            DrawDeferred();

    	    break;

    	    }

    	case EEikScrollPageDown:

    	    {

            iTextView->ScrollDisplayL( TCursorPosition::EFPageDown );

            UpdateScrollBarsL();

            DrawDeferred();

    	    break;

    	    }

    	case EEikScrollThumbDragVert:

    	    {

    	    // Get position values from scrollbar

    	    const TEikScrollBarModel* model = 

    	        iScrollBar->VerticalScrollBar()->Model();

    	    TInt thumb = model->iThumbPosition;

            if( CEikScrollBarFrame::EDoubleSpan == 

                iScrollBar->TypeOfVScrollBar() )

                {

                const TAknDoubleSpanScrollBarModel* dsModel = 

                    static_cast <const TAknDoubleSpanScrollBarModel*>( model );

                thumb = dsModel->FocusPosition();

                }

    	    // Scroll the textview according to scrollbar

    	    TViewYPosQualifier yPosQua;

    	    yPosQua.SetHotSpot( TViewYPosQualifier::EFViewTopOfLine );

    	    TInt topPos = -thumb;

    	    iTextView->SetViewL( 0, topPos, yPosQua );

    	    break;

    	    }

    	case EEikScrollThumbReleaseVert:

    	    {

    	    // Nothing to do here because EEikScrollThumbDragVert gets 

    	    // the scrollbar in correct state

    	    break;

    	    }

    	default:

    	    {

    	    break;

    	    }

        }

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::HandleScrollEventL()	end") );

    }

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

// CIMCVAppTextViewControl::OfferKeyEventL

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

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

//

TKeyResponse CIMCVAppTextViewControl::OfferKeyEventL( const TKeyEvent& aKeyEvent, 

                                                 TEventCode aType )

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::OfferKeyEventL()	start") ); 

    // Commented because it generates so much log

    // CHAT_DP( D_CHAT_LIT("CIMCVAppTextViewControl::OfferKeyEventL %d, type %d"), 

    //          aKeyEvent, aType )

    if( aType != EEventKey )

        {

        return EKeyWasNotConsumed;

        }

    switch( aKeyEvent.iCode )

        {

        case EKeyDownArrow:

            {

			//scroll lines one line down

            ScrollLinesL( -1 );

            return EKeyWasConsumed;

            }

        case EKeyUpArrow:

            {

			//scroll lines one line up

            ScrollLinesL( 1 );

            return EKeyWasConsumed;

            }

        default:

            {

            // No handling for other events

            break;

            }

        }

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::OfferKeyEventL()	end") );

    return EKeyWasNotConsumed;

    }

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

// CIMCVAppTextViewControl::HandlePointerEventL

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

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

//

void CIMCVAppTextViewControl::HandlePointerEventL( 

    const TPointerEvent& aPointerEvent )

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::HandlePointerEventL()	start") ); 

    if( !IMCVUiAppUtils::PenEnabled() )

        {

        return;

        }

    switch( iPenType )

        {

        case EPenForwardToChild:

            {

            // normal (CCoeControl) behaviour

            CCoeControl::HandlePointerEventL( aPointerEvent );

            break;

            }

        case EPenForwardToParent:

            {

            // forward all to parent

            if( Parent() )

                {

                Parent()->HandlePointerEventL( aPointerEvent );

                }

            break;

            }

        // Process event ourself

        case EPenProcessEvent:

            {

            ProcessStylusEventL( aPointerEvent );

            break;

            }

        case EPenIgnoreEvent:

            {

            // Ignore all

            break;

            }

        default:

            {

            // Can't be

            break;

            }

        }

	IM_CV_LOGS(TXT("CIMCVAppTextViewControl::HandlePointerEventL()	end") );

    }

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

// CIMCVAppTextViewControl::Draw

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

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

//

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

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::Draw()	start") ); 

    CWindowGc& gc = SystemGc();    

    // Clip text control and scrollbar to prevent flickering

    gc.SetClippingRegion( *iClipping );

	MAknsSkinInstance* skin = AknsUtils::SkinInstance();

	if (iBgContext)

		{

		// Draw the skin background

		AknsDrawUtils::Background(

			skin, iBgContext, this, gc, aRect);

		}

	else

		{

		// clear the area

		gc.SetBrushColor( iEikonEnv->ControlColor( EColorWindowBackground, *this ) );

		gc.SetBrushStyle( CGraphicsContext::ESolidBrush );

		gc.Clear( aRect );

		}		

    TRAP_IGNORE( iTextView->DrawL( aRect ) );

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::Draw()	end") );

    }

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

// CIMCVAppTextViewControl::SizeChanged

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

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

//

void CIMCVAppTextViewControl::SizeChanged()

    {

    IM_CV_LOGS(TXT("CIMCVAppTextViewControl::SizeChanged()	start") );