/*

* Copyright (c) 2007-2009 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:  ESMR editor impl.

*

*/

#include "emailtrace.h"

#include <txtfrmat.h>

#include <txtglobl.h>

#include <txtrich.h>

#include <gulfont.h>

#include <eikenv.h>

#include <avkon.hrh>

#include "cesmreditor.h"

#include "cesmrlayoutmgr.h"

#include "esmrfieldbuilderdef.h"

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

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

// CESMREditor::NewL

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

//

EXPORT_C CESMREditor* CESMREditor::NewL( )

    {

    FUNC_LOG;

    /*

     Default parameters for edwin. Note that as the parent

     is NULL, the edwin MUST be EOwnsWindow-type edwin.

     */

    return CESMREditor::NewL (

		NULL, // parent

		1, // number of lines

		KTextLimit, // text limit

		CEikEdwin::EResizable | CEikEdwin::EOwnsWindow );

    }

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

// CESMREditor::NewL

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

//

EXPORT_C CESMREditor* CESMREditor::NewL(

		const CCoeControl* aParent, TInt aNumberOfLines,

        TInt aTextLimit, TInt aEdwinFlags )

    {

    FUNC_LOG;

    CESMREditor* self = new (ELeave) CESMREditor();

    CleanupStack::PushL ( self );

    self->ConstructL ( aParent, aNumberOfLines, aTextLimit, aEdwinFlags );

    CleanupStack::Pop ( self );

    return self;

    }

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

// CESMREditor::~CESMREditor

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

//

EXPORT_C CESMREditor::~CESMREditor( )

    {

    FUNC_LOG;

    delete iDefaultText;

    }

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

// CESMREditor::PositionChanged

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

//

EXPORT_C void CESMREditor::PositionChanged( )

    {

    FUNC_LOG;

    CTextView* view = TextView();

    if ( view )

        {

        view->SetViewRect ( Rect() );

        }

    }

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

// CESMREditor::OfferKeyEventL

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

//

EXPORT_C TKeyResponse CESMREditor::OfferKeyEventL(

		const TKeyEvent& aKeyEvent,TEventCode aType )

    {

    FUNC_LOG;

    TKeyResponse ret = CEikRichTextEditor::OfferKeyEventL(aKeyEvent, aType);

    if ( aType == EEventKey )

        {

        TPoint firstRowExtra(0,RowHeight());

        TextLayout()->DocPosToXyPosL( 0, firstRowExtra);

        //firstRowExtra.iY

        TPoint rel(PositionRelativeToScreen());

        TPoint point(0,0);

        TextLayout()->DocPosToXyPosL( CursorPos(), point);

        // +1 because first line is zero

        TInt currentLineNumber = TextLayout()->GetLineNumber( CursorPos() ) + 1;

        TInt cursorLowerPosition = currentLineNumber * RowHeight();

        TInt cursorUpperPosition = ( currentLineNumber -1 )* RowHeight();

        if ( aKeyEvent.iCode == EKeyDownArrow && iObserver)

            {

            TPoint firstRowExtra(0,RowHeight());

            TextLayout()->DocPosToXyPosL( 0, firstRowExtra);

            TPoint cursorPos(0,0);

            TextLayout()->DocPosToXyPosL( CursorPos(), cursorPos);

            TInt edwinTlY = Position().iY;

            TInt listHeight = iObserver->ListHeight();

            // edwinTlY negative

            if ( cursorLowerPosition > ( listHeight - edwinTlY )) 

                {

                iObserver->MoveListAreaUpL(RowHeight());

                }

            }

        else if ( aKeyEvent.iCode == EKeyUpArrow && iObserver)

            {

            TPoint firstRowExtra(0,RowHeight());

            TextLayout()->DocPosToXyPosL( 0, firstRowExtra);

            TPoint cursorPos(0,0);

            TextLayout()->DocPosToXyPosL( CursorPos(), cursorPos);

            TInt hiddenHeight = Position().iY;

            // upper corner of field not visible

            if ( hiddenHeight < 0 )

                {

                if ( (cursorPos.iY - firstRowExtra.iY * 2) < (-hiddenHeight))

                    {

                    iObserver->MoveListAreaDownL(RowHeight());

                    }

                }

            }

        }

    return ret;

    }

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

// CESMREditor::ClearSelectionAndSetTextL

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

//

EXPORT_C void CESMREditor::FocusChanged(TDrawNow aDrawNow)

    {

    FUNC_LOG;

    CEikRichTextEditor::FocusChanged( aDrawNow );

    TRAPD( error, TryToSetSelectionL() );

    if ( error != KErrNone )

        {

        CEikonEnv::Static()->HandleError( error );// codescanner::eikonenvstatic

        }

    }

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

// CESMREditor::TryToSetSelectionL

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

//

void CESMREditor::TryToSetSelectionL()

    {

    FUNC_LOG;

    if ( IsFocused() )

        {

        // set selection to text if it is the default text

        HBufC* text = GetTextInHBufL();

        if ( text )

            {

            CleanupStack::PushL( text );

            if ( iDefaultText->Compare( *text ) == KErrNone )

                {

                SetSelectionL(0, text->Length() );

                }

            CleanupStack::PopAndDestroy( text );

            }

        }

    }

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

// CESMREditor::HandleEdwinEventL

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

//

EXPORT_C void CESMREditor::HandleEdwinEventL(

		CEikEdwin* aEdwin,TEdwinEvent aEventType )

    {

    FUNC_LOG;

    if ( aEdwin == this && aEventType == EEventNavigation && iObserver)

        {

        TInt curPos = CursorPos ();

        TInt textLength = TextLength();

        // Update viewarea scrolling in cases where the cursor location 

        // is changed directly from bottom to upmost position or vise versa.

        if ( CursorPos () == TextLength() )

            {

            // KErrNotFound as field id is interpret as focused field:

            iObserver->ScrollItemVisible( KErrNotFound );

            }

        if ( CursorPos () == 0 )

            {

            // KErrNotFound as field id is interpret as focused field:

            iObserver->ScrollItemVisible( KErrNotFound );

            }

        }

    }

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

// CESMREditor::ClearSelectionAndSetTextL

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

//

EXPORT_C void CESMREditor::ClearSelectionAndSetTextL( const TDesC& aText )

    {

    FUNC_LOG;

    ClearSelectionL();

    SetCursorPosL(0, EFalse );

    SetTextL( &aText );

    SetCursorPosL(0, EFalse );

    HandleTextChangedL();

    }

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

// CESMREditor::SetFontL

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

//

EXPORT_C void CESMREditor::SetFontL( 

		const CFont* aFont, CESMRLayoutManager* aLayout )

    {

    FUNC_LOG;

    const CFont* font = aFont;

    TFontSpec fontSpec = font->FontSpecInTwips();

    CParaFormat* paraFormat = CParaFormat::NewLC();

    TParaFormatMask paraFormatMask;

    paraFormat->iLineSpacingControl = CParaFormat::ELineSpacingExactlyInPixels;

    paraFormatMask.SetAttrib( EAttLineSpacing );

    paraFormat->iHorizontalAlignment = CParaFormat::ELeftAlign;

    paraFormatMask.SetAttrib( EAttAlignment );

    TCharFormat charFormat;

    TCharFormatMask formatMask;

    charFormat.iFontSpec = fontSpec;

    formatMask.SetAttrib( EAttFontTypeface );

    formatMask.SetAttrib( EAttFontHeight );

    formatMask.SetAttrib( EAttFontPosture );

    formatMask.SetAttrib( EAttFontStrokeWeight );

    charFormat.iFontPresentation.iTextColor = aLayout->NormalTextColor();

    formatMask.SetAttrib( EAttColor );

    CParaFormatLayer* paraFormatLayer =

        CParaFormatLayer::NewL( paraFormat, paraFormatMask );

    CleanupStack::PushL( paraFormatLayer );

    CCharFormatLayer* charFormatLayer =

        CCharFormatLayer::NewL( charFormat, formatMask );

    SetParaFormatLayer( paraFormatLayer );

    CleanupStack::Pop( paraFormatLayer );

    CleanupStack::PopAndDestroy( paraFormat );

    SetCharFormatLayer( charFormatLayer );

    // This forces CEikEdwin::OnReformatL to notify observer

    // through HandleEdwinSizeEventL about changed size.

    // It is notified only if linecount changes.

    CEikEdwin::iNumberOfLines = 0;

    CEikEdwin::FormatTextL();

    }

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

// CESMREditor::CursorLinePos

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

//

EXPORT_C TInt CESMREditor::CursorLinePos( ) const

    {

    FUNC_LOG;

    return TextLayout()->GetLineNumber ( CursorPos ( ) );

    }

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

// CESMREditor::LineCount

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

//

EXPORT_C TInt CESMREditor::LineCount( ) const

    {

    FUNC_LOG;

    return TextLayout()->GetLineNumber ( TextLength ( ) );

    }

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

// CESMREditor::RowHeight

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

//

EXPORT_C TInt CESMREditor::RowHeight()

    {

    FUNC_LOG;

    TInt bandHeight = TextLayout()->BandHeight();

    // Starts from zero, so let's increase the count by one.

    TInt lineNumberCount = TextLayout()->GetLineNumber(TextLength()) + 1;

    return ( bandHeight / lineNumberCount );

    }

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

// CESMREditor::CurrentLineNumber

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

//

EXPORT_C TInt CESMREditor::CurrentLineNumber()

    {

    FUNC_LOG;

    // first line is zero, let's increase it by one

    return TextLayout()->GetLineNumber( CursorPos() ) + 1;

    }

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

// CESMREditor::LineCount

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

//

EXPORT_C  void CESMREditor::SetDefaultTextL(

        HBufC* aDefaultText ) // codescanner::nonconsthbufc

    {

    FUNC_LOG;

    SetTextL( aDefaultText );

    if ( iDefaultText )

        {

        delete iDefaultText;

        iDefaultText = NULL;

        }

    iDefaultText = aDefaultText;

    }

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

// CESMREditor::LineCount

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

//

EXPORT_C const TDesC& CESMREditor::DefaultText()

    {

    FUNC_LOG;

    return *iDefaultText;

    }

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

// CESMREditor::LineCount

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

//

EXPORT_C void CESMREditor::SetListObserver( MESMRListObserver* aObserver )

    {

    FUNC_LOG;

    iObserver = aObserver;

    }

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

// CESMREditor::CESMREditor

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

//

CESMREditor::CESMREditor( )

    {

    FUNC_LOG;

    // Do nothing

    }

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

// CESMREditor::ConstructL

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

//

void CESMREditor::ConstructL(const CCoeControl* aParent, TInt aNumberOfLines,

        TInt aTextLimit, TInt aEdwinFlags )

    {

    FUNC_LOG;

    CEikRichTextEditor::ConstructL (aParent, aNumberOfLines, aTextLimit,

            aEdwinFlags );

    AddEdwinObserverL(this);

    SetUpperFullFormattingLength( aTextLimit );

    iLimitLength = aTextLimit;

    SetAlignment ( CESMRLayoutManager::IsMirrored ( ) ? EAknEditorAlignRight

            : EAknEditorAlignLeft );

    SetHighlightStyleL ( EEikEdwinHighlightLink );

    }

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

// CESMREditor::GetLimitLength

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

//

EXPORT_C TInt CESMREditor::GetLimitLength() const

	{

    FUNC_LOG;

	return iLimitLength;

	}

//EOF