/*

* 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:  compose view container

*

*/

#include "emailtrace.h"

#include <AknIconUtils.h>

#include <avkon.hrh>

#include <eiklabel.h>

#include <eikimage.h>

#include <eikenv.h>

#include <AknsDrawUtils.h>

#include <AknUtils.h>

#include <StringLoader.h>

#include <s32mem.h>

#include <txtrich.h>

#include <FreestyleEmailUi.rsg>

#include <freestyleemailui.mbg>

#include "FreestyleEmailUiLayoutData.h"

#include "FreestyleEmailUiLayoutHandler.h"

#include "FreestyleEmailUiAppui.h"

#include "FreestyleEmailUiTextureManager.h"

#include "ncssubjectfield.h"

#include "ncsconstants.h"

#include "ncsfieldsizeobserver.h"

#include "ncsutility.h"

#include "ncsheadercontainer.h"

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

// CNcsSubjectField::CNcsSubjectField()

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

//

CNcsSubjectField::CNcsSubjectField( MNcsFieldSizeObserver* aSizeObserver,

        CNcsHeaderContainer* aParentControl ):

	MNcsControl( aSizeObserver ),

	iParentControl( aParentControl )

    {

    FUNC_LOG;

    }

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

// CNcsSubjectField::NewL()

// Two-phased constructor.

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

//

CNcsSubjectField* CNcsSubjectField::NewL( TInt aLabelTextId,

	MNcsFieldSizeObserver* aSizeObserver, CNcsHeaderContainer* aParentControl )

    {

    FUNC_LOG;

    CNcsSubjectField* self =

        new ( ELeave ) CNcsSubjectField( aSizeObserver, aParentControl );

    CleanupStack::PushL( self );

    self->ConstructL( aLabelTextId );

    CleanupStack::Pop( self );

    return self;

    }

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

// CNcsSubjectField::ConstructL()

// Symbian 2nd phase constructor can leave.

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

//

void CNcsSubjectField::ConstructL( TInt aLabelTextId )

    {

    FUNC_LOG;

    // Create label

	HBufC* aTextBuf = StringLoader::LoadLC( aLabelTextId );

    iLabel = new ( ELeave ) CNcsLabel( *this, NULL );

	iLabel->SetBrushStyle(CWindowGc::ENullBrush);

    // iTextEditor is not completely constructed until in SetContainerWindowL()

    iFocusChangeHandler = new (ELeave) CAsyncCallBack( CActive::EPriorityStandard );

    }

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

// Destructor

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

//

CNcsSubjectField::~CNcsSubjectField()

    {

    FUNC_LOG;

    delete iTextEditor;

    delete iLabel;

    // Platform layout change

    /*if ( iFont )

        {

        ControlEnv()->ScreenDevice()->ReleaseFont( iFont );

        iFont = NULL;

        }*/

    delete iFocusChangeHandler;

    }

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

// CNcsSubjectField::SetContainerWindowL() const

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

//

void CNcsSubjectField::SetContainerWindowL(const CCoeControl& aContainer)

	{

    FUNC_LOG;

	CCoeControl::SetContainerWindowL(aContainer);

	// Create the component array

    InitComponentArrayL();

	CCoeControlArray& controls = Components();

	controls.SetControlsOwnedExternally(ETrue);

	controls.AppendLC(iLabel);

	CleanupStack::Pop(iLabel);

	controls.AppendLC(iTextEditor);

    CleanupStack::Pop(iTextEditor);

    // Setup text editor

    iTextEditor->ConstructL( &aContainer, KMaxAddressFieldLines, 0 );

	iTextEditor->SetBorder( TGulBorder::ENone );

    iTextEditor->SetAknEditorInputMode( EAknEditorTextInputMode );

	iTextEditor->CreateScrollBarFrameL()->SetScrollBarVisibilityL( CEikScrollBarFrame::EOff, CEikScrollBarFrame::EOff );

    iTextEditor->SetEdwinSizeObserver( this );

    iTextEditor->SetupEditorL();

    // Setup label

    UpdateFontSize();

    UpdateColors();

	}

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

// CNcsSubjectField::Draw() const

// Draws the display

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

//

void CNcsSubjectField::Draw( const TRect& /*aRect*/ ) const

    {

    FUNC_LOG;

    CWindowGc& gc = SystemGc();

    gc.SetBrushStyle( CGraphicsContext::ENullBrush );

    }

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

// CNcsSubjectField::GetMinLabelLength()

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

//

TInt CNcsSubjectField::GetMinLabelLength() const

	{

    FUNC_LOG;

    return iLabel->Font()->TextWidthInPixels( *iLabel->Text() );

	}

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

// CNcsSubjectField::SizeChanged()

// set size

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

//

void CNcsSubjectField::SizeChanged()

    {

    FUNC_LOG;

    const TRect rect( Rect() );

    NcsUtility::LayoutCaptionLabel( iLabel, rect );

    NcsUtility::LayoutDetailEdwinTouch( iTextEditor, rect, iEditorLineCount, EFalse );  

    if (iTextEditor->ScrollBarFrame())

        {

        TRect rc = iTextEditor->Rect();

        if (AknLayoutUtils::LayoutMirrored())

            {

            rc.iTl.iX += iTextEditor->ScrollBarFrame()->ScrollBarBreadth(CEikScrollBar::EVertical);

            }

        else

            {

            rc.iBr.iX -= iTextEditor->ScrollBarFrame()->ScrollBarBreadth(CEikScrollBar::EVertical);

            }

        iTextEditor->SetRect(rc);

        }

    // Setup text alignment according the mirrored/normal layout.

    if ( AknLayoutUtils::LayoutMirrored() )

        {

        iLabel->SetAlignment( EHLeftVCenter );

        iLabel->SetLabelAlignment( ELayoutAlignLeft );

        iTextEditor->SetAlignment( EAknEditorAlignRight );

        }

    else

        {

        iLabel->SetAlignment( EHRightVCenter );

        iLabel->SetLabelAlignment( ELayoutAlignRight );

        iTextEditor->SetAlignment( EAknEditorAlignLeft );

        }

	UpdateFontSize();

	iTextEditor->UpdateCustomDrawer();

    }

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

// CNcsSubjectField::PositionChanged()

// set size

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

//

void CNcsSubjectField::PositionChanged()

    {

    FUNC_LOG;

    //SizeChanged();

    }

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

// CNcsSubjectField::OfferKeyEventL()

// Handles key events

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

//

TKeyResponse CNcsSubjectField::OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType )

    {

    FUNC_LOG;

	TKeyResponse ret( EKeyWasNotConsumed );

	ret = iTextEditor->OfferKeyEventL( aKeyEvent, aType );

    return ret;

    }

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

// CNcsAddressInputField::HandlePointerEventL()

// Handles pointer events

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

//

void CNcsSubjectField::HandlePointerEventL( const TPointerEvent& aPointerEvent )

    {

	FUNC_LOG;

    iTextEditor->HandlePointerEventL( aPointerEvent );

    }

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

// CNcsSubjectField::FocusChanged()

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

//

void CNcsSubjectField::FocusChanged( TDrawNow aDrawNow )

	{

    FUNC_LOG;

	// The focus change gaining handling needs to be deferred until AknFep is fully

	// initialised. Otherwise there will be problems when moving focus from

	// body to subject. Focus losing can be handled immediately

	iDrawAfterFocusChange = aDrawNow;

	if ( IsFocused() )

	    {

	TCallBack callback( DoHandleFocusChanged, this );

	iFocusChangeHandler->Cancel();

	iFocusChangeHandler->Set( callback );

	iFocusChangeHandler->CallBack();

	}

	else

	    {

	    DoHandleFocusChanged( this );

	    }

	}

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

// CNcsSubjectField::HandleFocusChangedL()

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

//

void CNcsSubjectField::HandleFocusChangedL()

    {

    FUNC_LOG;

    if ( IsFocused() )

        {

        iTextEditor->SetFocus( ETrue );

        iTextEditor->SetCursorPosL( iTextEditor->TextLength(), EFalse );

        // make sure that control is visible on screen

        if ( Rect().iTl.iY < 0 )

            {

            TPoint pt = TPoint( 0, 0 );

            Reposition( pt, Rect().Width() );

            iSizeObserver->UpdateFieldPosition( this );

            }

        else

            {

            TPoint pos = PositionRelativeToScreen();

            pos.iY += Size().iHeight;

            CWsScreenDevice* screenDev = ControlEnv()->ScreenDevice();

            TPixelsAndRotation pix;

            screenDev->GetDefaultScreenSizeAndRotation( pix );

            const TInt h = pix.iPixelSize.iHeight;

            if ( pos.iY >= h - h / 3 )

                {

                TPoint pt = TPoint( 0, h / 3 );

                Reposition( pt, Rect().Width() );

                iSizeObserver->UpdateFieldPosition( this );

                }

            }

        if ( iParentControl )

            {

            iParentControl->SetMskL();

            }

        }

    else

        {

        iTextEditor->HandleTextChangedL();

        iTextEditor->SetFocus( EFalse );

        }

    if ( iDrawAfterFocusChange )

        {

        DrawNow();

        }

    }

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

// CNcsSubjectField::DoHandleFocusChanged()

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

//

TInt CNcsSubjectField::DoHandleFocusChanged( TAny* aSelfPtr )

    {

    FUNC_LOG;

    CNcsSubjectField* self = static_cast<CNcsSubjectField*>( aSelfPtr );

    TRAPD( err, self->HandleFocusChangedL() );

    return err;

    }

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

// CNcsSubjectField::MinimumHeight()

// return height of subject control

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

//

TInt CNcsSubjectField::MinimumHeight()

    {

    FUNC_LOG;

    // Platform layout changes

    /*

    TNcsMeasures m = NcsUtility::Measures();

	TInt height = m.iAifHeight - m.iAifEditorHeight + iEditorMinimumHeight + m.iSubjectExtraHeightBottom;

	TInt height2 = m.iAifHeight + m.iSubjectExtraHeightBottom;

	// if followup icon and priority icon are both visible increase the subject field height

	if ( iFollowUp && iPriority != EMsgPriorityNormal )

	    {

	    height2 += KIconHeightFollowUp;

	    }

    return Max( height, height2 );

    */

    //return NcsUtility::MinimumHeaderSize( Rect(), iEditorLineCount ).iHeight;

    // Platform layout changes

    return 0;

    }

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

// CNcsSubjectField::SetSubjectL()

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

//

void CNcsSubjectField::SetSubjectL( const TDesC& aSubject )

    {

    FUNC_LOG;

    if ( &aSubject && aSubject.Length() > 0 )

    	{

	    RMemReadStream inputStream( aSubject.Ptr(), aSubject.Size() );

	    CleanupClosePushL( inputStream );

	  	iTextEditor->RichText()->ImportTextL( 0, inputStream, CPlainText::EOrganiseByParagraph );

		// Activating the field will set the control to the end of the text

	    iTextEditor->ActivateL();

	    iTextEditor->SetCursorPosL(0,EFalse);

	    CleanupStack::PopAndDestroy( &inputStream );

    	}

    }

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

// CNcsSubjectField::HandleEdwinSizeEventL()

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

//

TBool CNcsSubjectField::HandleEdwinSizeEventL( CEikEdwin* /*aEdwin*/,

	TEdwinSizeEvent /*aEventType*/, TSize aDesirableEdwinSize )

    {

    FUNC_LOG;

    //  Platform layout chage

    /*

    TInt ret( EFalse );

    TInt htLine = iTextEditor->GetLineHeightL();

    TInt numLinesDesired = aDesirableEdwinSize.iHeight / htLine;

    if ( numLinesDesired < KMaxAddressFieldLines &&

         iEditorMinimumHeight != aDesirableEdwinSize.iHeight )

        {

        iEditorMinimumHeight = aDesirableEdwinSize.iHeight;

        iTextEditor->CreateScrollBarFrameL()->SetScjrollBarVisibilityL( CEikScrollBarFrame::EOff, CEikScrollBarFrame::EOff );

        if ( iSizeObserver )

            {

            ret = iSizeObserver->UpdateFieldSizeL();

            }

        }

    else if ( iEditorMinimumHeight != htLine * KMaxAddressFieldLines )

        {

        //We may still need to resize the controll.

        iEditorMinimumHeight = htLine * KMaxAddressFieldLines;

        iTextEditor->CreateScrollBarFrameL()->SetScrollBarVisibilityL( CEikScrollBarFrame::EOff, CEikScrollBarFrame::EOn );

        if ( iSizeObserver )

            {

            ret = iSizeObserver->UpdateFieldSizeL();

            }

        }

    */

    TInt ret( EFalse );

    TInt htLine = iTextEditor->GetLineHeightL();

    TInt numLinesDesired = aDesirableEdwinSize.iHeight / htLine;

    CEikScrollBarFrame& scrollBarFrame( *iTextEditor->CreateScrollBarFrameL() );

    iEditorLineCount = numLinesDesired;

    scrollBarFrame.SetScrollBarVisibilityL( CEikScrollBarFrame::EOff, CEikScrollBarFrame::EOff );

    if ( iSizeObserver )

        {

        ret = iSizeObserver->UpdateFieldSizeL();

        }

    return ret;

    }

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

// CNcsSubjectField::SelectAllTextL()

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

//

void CNcsSubjectField::SelectAllTextL()

	{

    FUNC_LOG;

	iTextEditor->SelectAllL();

	}

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

// CNcsSubjectField::Editor

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

CNcsEditor* CNcsSubjectField::Editor() const

	{

    FUNC_LOG;

	return iTextEditor;

	}

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

// CNcsSubjectField::LineCount

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

TInt CNcsSubjectField::LineCount() const

	{

    FUNC_LOG;

	return iTextEditor->LineCount();

	}

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

// CNcsSubjectField::CursorLineNumber

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

TInt CNcsSubjectField::CursorLineNumber() const

	{

    FUNC_LOG;

	return iTextEditor->CursorLineNumber();

	}

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

// CNcsSubjectField::CursorPosition

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

TInt CNcsSubjectField::CursorPosition() const

	{

    FUNC_LOG;

	TInt pos = iTextEditor->CursorPosition();

	//Add the delta between the top of the edit control

	//and the top of the parent control

	pos += iTextEditor->Rect().iTl.iY - Rect().iTl.iY;

	return pos;

	}

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

// CNcsSubjectField::ScrollableLines

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

TInt CNcsSubjectField::ScrollableLines() const

	{

    FUNC_LOG;

	return iTextEditor->ScrollableLines();

	}

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

// CNcsSubjectField::GetNumChars

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

TInt CNcsSubjectField::GetNumChars() const

	{

    FUNC_LOG;

	return iTextEditor->GetNumChars();

	}

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

// CNcsSubjectField::GetLabelText

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

const TDesC& CNcsSubjectField::GetLabelText() const

	{

    FUNC_LOG;

	return KNullDesC;

	}

// Platform layout change

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

// CNcsSubjectField::LayoutLineCount

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

//

TInt CNcsSubjectField::LayoutLineCount() const

    {

    FUNC_LOG;

    return ( IsVisible() ? Max( 1, iEditorLineCount ) : 0 );

    }

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

// CNcsSubjectField::Reposition

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

void CNcsSubjectField::Reposition(TPoint& aPt, TInt /*aWidth*/)

	{

    FUNC_LOG;