/*

* 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:  MsgBodyControlEditor implementation

*

*/

// ========== INCLUDE FILES ================================

#include <eikenv.h>                        // for CEikonEnv

#include <txtrich.h>                       // for CRichText

#include <baclipb.h>                       // for CClipboard

#include <AknUtils.h>                      // for AknUtils

#include <ItemFinder.h>                    // for automatic highlight

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

#include <aknlayoutscalable_apps.cdl.h>

#ifdef RD_TACTILE_FEEDBACK

#include <touchfeedback.h>

#endif 

#include "MsgEditorCommon.h"               //

#include "MsgBodyControlEditor.h"          // for CMsgBodyControlEditor

#include "MsgBaseControl.h"                // for TMsgEditPermissionFlags

#include "MsgBaseControlObserver.h"        // for MMsgBaseControlObserver

#include "MsgEditorCustomDraw.h"           // for CMsgEditorCustomDraw

#include "MsgEditor.hrh"

#include <MmsViewer.rsg>            // resouce identifiers

// ========== EXTERNAL DATA STRUCTURES =====================

// ========== EXTERNAL FUNCTION PROTOTYPES =================

// ========== CONSTANTS ====================================

// ========== MACROS =======================================

// ========== LOCAL CONSTANTS AND MACROS ===================

const TInt KBodyFullFormattingLength = 500;

// ========== MODULE DATA STRUCTURES =======================

// ========== LOCAL FUNCTION PROTOTYPES ====================

// ========== LOCAL FUNCTIONS ==============================

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

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

// CMsgBodyControlEditor::CMsgBodyControlEditor

//

// Constructor.

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

//

CMsgBodyControlEditor::CMsgBodyControlEditor( const CCoeControl* aParent,

                                              TUint32& aFlags,

                                              MMsgBaseControlObserver* aBaseControlObserver ) :

    CMsgExpandableControlEditor( aParent, aFlags, aBaseControlObserver ),

    iPreviousItemStart( -1 ),

    iPreviousItemLength( -1 )

    {

    }

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

// CMsgBodyControlEditor::~CMsgBodyControlEditor

//

// Destructor.

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

//

CMsgBodyControlEditor::~CMsgBodyControlEditor()

    {

    if (iItemFinder)

        {

        TRAP_IGNORE(iItemFinder->SetItemFinderObserverL( NULL ));

        }

    }

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

// CMsgBodyControlEditor::ConstructL

//

//

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

//

void CMsgBodyControlEditor::ConstructL()

    {

    TInt edwinFlags = ENoHorizScrolling | 

                      ENoAutoSelection | 

                      EWidthInPixels | 

                      EAllowUndo | 

                      EResizable |

                      EPasteAsPlainText;

    iFlags |= EMsgControlModeDoNotDrawFrameBgContext;

    ResolveLayouts();

    /*if ( iBaseControlObserver &&

         !iBaseControlObserver->ViewInitialized() )

        {

        SetSuppressFormatting( ETrue );

        }*/

    iItemFinder = CItemFinder::NewL(  CItemFinder::EUrlAddress | 

                                      CItemFinder::EEmailAddress | 

                                      CItemFinder::EPhoneNumber | 

                                      CItemFinder::EUriScheme );

    iItemFinder->AddObserver( *this );

    iFocusChangedBeforeParseFinish = EFalse;

    CEikRichTextEditor::ConstructL( iParentControl, 0, iMaxNumberOfChars, edwinFlags );

    // 107-24185 : Emoticon support for SMS and MMS

    AddFlagToUserFlags(EAvkonEnableSmileySupport);

    // Both global text editor and edwin have it's own formatting layers.

    // CEikRichTextEditor::ConstructL call will set global formatting layers

    // into use for text. This is not correct as edwin formatting layers

    // will hold correct formatting values. Below calls will set edwin

    // formatting layers into use and prevent client based formatting from

    // being based on incorrect formatting layer.

    SetParaFormatLayer( iEikonEnv->SystemParaFormatLayerL()->CloneL() );

    SetCharFormatLayer( iEikonEnv->SystemCharFormatLayerL()->CloneL() );

    SetUpperFullFormattingLength( KBodyFullFormattingLength );

    SetMaximumHeight( MsgEditorCommons::MaxBodyHeight() );

    // Set the wrap width to be that of the current body text pane. 

    // This will make the formatting of text safer if it is performed 

    // before the editor has ever had SetSize() called. WrapWidth is 

    // usually set in HandleSizeChanged()

    if ( iLayout )

        {

        iLayout->SetWrapWidth( iTextLayout.TextRect().Width() );

        }

    TRect dataPane = MsgEditorCommons::MsgDataPane();

    TMargins8 edwinMargins;

    edwinMargins.iTop = 0;

    edwinMargins.iBottom = 0;

    edwinMargins.iLeft = (TInt8)( iTextLayout.TextRect().iTl.iX - dataPane.iTl.iX );

    edwinMargins.iRight = (TInt8)( dataPane.iBr.iX - iTextLayout.TextRect().iBr.iX );

    SetBorderViewMargins( edwinMargins );

    }

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

// CMsgBodyControlEditor::SetAndGetSizeL

//

// Calculates and sets the size of the control and returns new size as

// reference aSize.

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

//

void CMsgBodyControlEditor::SetAndGetSizeL( TSize& aSize )

    {

    // This may change the heigh if the content has changed

    SetSize( aSize );

    aSize = iSize;

    }

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

// CMsgBodyControlEditor::InsertCharacterL

//

// Inserts a character to the editor.

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

//

void CMsgBodyControlEditor::InsertCharacterL( const TChar& aCharacter )

    {

    // 107-24185 : Emoticon support for SMS and MMS

    TBuf<1> text;

    text.Append( aCharacter );

    InsertTextL( text );

    //UpdateScrollBarsL();

    }

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

// CMsgBodyControlEditor::InsertTextL

//

// Inserts text to the editor.

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

//

void CMsgBodyControlEditor::InsertTextL( const TDesC& aText )

    {

    if ( iTextView )

        {

        TCursorSelection selection = iTextView->Selection();

        const TInt selLength = selection.Length();

        const TInt lower = selection.LowerPos();

        if ( selLength )

            {

            // 107-24185 : Emoticon support for SMS and MMS, symbian call

            InsertDeleteCharsL( lower, aText, selection );

            }

        else

            {

            InsertDeleteCharsL( selection.iCursorPos, aText, selection );

            }

        SetCursorPosL( lower + aText.Length(), EFalse );

        NotifyNewFormatL();

        }

    else

        {

        iText->InsertL( 0, aText );

        }

    }

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

// CMsgBodyControlEditor::ActivateL

//

// This function is needed for overriding

// CMsgExpandableControlEditor::ActivateL().

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

//

void CMsgBodyControlEditor::ActivateL()

    {

    if ( IsActivated() )

        {

        return;

        }

    CMsgExpandableControlEditor::ActivateL();      

    }

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

// CMsgBodyControlEditor::OfferKeyEventL

//

//

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

//

TKeyResponse CMsgBodyControlEditor::OfferKeyEventL(

    const TKeyEvent& aKeyEvent, TEventCode aType )

    {

    if ( IsReadOnly() )

        {

        switch ( aKeyEvent.iCode )

            {

            case EKeyDevice3:  

                {

                if ( iFindItemEventReceived )

                    {

                    // Find item was activated by touch, 

                    // no need to restore highlight

                    iFindItemEventReceived = EFalse;

                    return EKeyWasNotConsumed;

                    }

                // fall through

                } 

            case EKeyEnter:

                {

                // Restore highlight

                const CItemFinder::CFindItemExt& item =

                    iItemFinder->CurrentItemExt();

                if ( item.iItemType != CItemFinder::ENoneSelected )

                    {

                    SetSelectionL( item.iStart, item.iEnd + 1 );

                    }

                else if ( iInitTop )

                    {

                    SetHighlightL( 0, EMsgFocusDown, ETrue ); 

                    }

                else

                    {

                    SetHighlightL( TextLength(), EMsgFocusUp, ETrue ); 

                    }

                return EKeyWasConsumed;

                }

            case EKeyUpArrow:

            case EKeyDownArrow:

                break;

            default:

                return CEikRichTextEditor::OfferKeyEventL( aKeyEvent, aType );

            }

        SetHighlightL( CursorPos(), 

            ( aKeyEvent.iCode == EKeyUpArrow )

            ? EMsgFocusUp

            : EMsgFocusDown );

        return EKeyWasConsumed;

        }

    else

        {

        return CEikRichTextEditor::OfferKeyEventL( aKeyEvent, aType );

        }

    }

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

// CMsgBodyControlEditor::HandleFindItemEventL

//

// Handles finditem events. 

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

//

void CMsgBodyControlEditor::HandleFindItemEventL(

                        const CItemFinder::CFindItemExt& aItem,

                        MAknItemFinderObserver::TEventFlag aEvent,

                        TUint aFlags)

    {     

    // Body text find item was clicked, we will send simulated key event for

    // opening context sensitive menu in AppUI::HandleKeyEvent    

    if ( MAknItemFinderObserver::EPointerEvent == aEvent )

        {

        TKeyEvent event;

        event.iCode = EKeyDevice3;

        event.iScanCode = EKeyDevice3;

        event.iModifiers = 0;

        event.iRepeats = 0;

        iFindItemEventReceived = ETrue;

        iCoeEnv->WsSession().SimulateKeyEvent( event );

        }

    }

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

// CMsgBodyControlEditor::HandlePointerEventL

//

// Handles pointer events. 

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

//

#ifdef RD_SCALABLE_UI_V2

void CMsgBodyControlEditor::HandlePointerEventL( const TPointerEvent& aPointerEvent )

    {

    TBool forwardRequest( ETrue );

    if ( IsActivated() &&

         IsReadOnly() && 

         ( aPointerEvent.iType == TPointerEvent::EButton1Down ||

           aPointerEvent.iType == TPointerEvent::EButton1Up ) )

        {

        TPoint tapPoint( aPointerEvent.iPosition );

        TInt docPos( TextView()->XyPosToDocPosL( tapPoint ) );

        TInt start( 0 );

        TInt length( 0 );

        MParser* parser = iItemFinder;

        TBool tappedOverTag( RichText()->CursorOverTag( docPos, parser, start, length ) );

        if ( aPointerEvent.iType == TPointerEvent::EButton1Down )

            {

            if ( !tappedOverTag )

                {

                // Reset current finditem

                iItemFinder->ResetCurrentItem();

                }

            else

                {

                // Find item tapped, do not forward event

                forwardRequest = EFalse;

                }

            }

        }

    if ( forwardRequest )

        {

        CMsgExpandableControlEditor::HandlePointerEventL( aPointerEvent );

        }                

#ifdef RD_TACTILE_FEEDBACK         

    else if(aPointerEvent.iType == TPointerEvent::EButton1Down)

        {                                

        MTouchFeedback* feedback = MTouchFeedback::Instance();

        if ( feedback )

            {

            feedback->InstantFeedback( this, ETouchFeedbackBasic );

            }

        }

#endif //  RD_TACTILE_FEEDBACK      

    }

#else

void CMsgBodyControlEditor::HandlePointerEventL( const TPointerEvent& /*aPointerEvent*/ )

    {

    }

#endif // RD_SCALABLE_UI_V2

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

// CMsgBodyControlEditor::IsFocusChangePossibleL

//

//

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

//

TBool CMsgBodyControlEditor::IsFocusChangePossibleL(

    TMsgFocusDirection aDirection )

    {

    CItemFinder::TFindDirection direction = aDirection == EMsgFocusUp

        ? CItemFinder::ENextUp

        : CItemFinder::ENextDown;

    TInt cursorPos = CursorPos();

    iItemFinder->ResolveAndSetItemTypeL( cursorPos );

    TInt nextItem = iItemFinder->PositionOfNextItem( direction );

    TPoint dummy;

    if ( nextItem < KErrNone )

        {

        // Next item not found.

        if ( aDirection == EMsgFocusUp )

            {

            return TextLayout()->FirstDocPosFullyInBand() == 0;

            }

        else

            {

            return TextLayout()->PosInBand( TextLength(),dummy );

            }

        }

    else

        {

        // Next item found. -> Focus change not allowed.

        return 0;

        }

    }

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

// CMsgBodyControlEditor::SetupAutomaticFindAfterFocusChangeL

//

//

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

//

void CMsgBodyControlEditor::SetupAutomaticFindAfterFocusChangeL( TBool aBeginning )

    {

    iInitTop = aBeginning;

    if ( !iTextParsed )

        {

        iFocusChangedBeforeParseFinish = ETrue;

        }

    else

        {

        if ( aBeginning )

            {

            SetHighlightL( 0, EMsgFocusDown, ETrue ); 

            }

        else

            {

            SetHighlightL( TextLength(), EMsgFocusUp, ETrue ); 

            }

        }

    }

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

// CMsgBodyControlEditor::SetHighlightL

//

//

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

//

void CMsgBodyControlEditor::SetHighlightL(

    TInt aCursorPos, TMsgFocusDirection aDirection,

    TBool aInit /*= EFalse*/ )

    {

    // Use "link highlight"

    SetHighlightStyleL( EEikEdwinHighlightLink );

    TInt textLength = TextLength();

    TCursorPosition::TMovementType movetype = aDirection == EMsgFocusUp

        ? TCursorPosition::EFPageUp

        : TCursorPosition::EFPageDown;

    CItemFinder::TFindDirection direction = aDirection == EMsgFocusUp

        ? CItemFinder::ENextUp

        : CItemFinder::ENextDown;

    TInt nextItem = KErrNotFound;

    TPoint dummy;

    if ( iTextParsed )

        {

        if ( aInit )

            {

            iItemFinder->NextItemOrScrollL( aCursorPos == 0

                ? CItemFinder::EInitDown

                : CItemFinder::EInitUp );

            }

        else

            {

            nextItem = iItemFinder->PositionOfNextItem( direction );

            }

        }

    if ( nextItem > KErrNotFound )

        {

        if ( !aInit &&

            !TextLayout()->PosInBand( nextItem ,dummy ) )

            {

            // first move one page and then set selection

            SetCursorPosL( CursorPos(), EFalse );

            iTextView->MoveCursorL( movetype, EFalse );

            }

        if ( TextLayout()->PosInBand( nextItem ,dummy ) )

            {

            // next item is visible, just change selection

            iItemFinder->ResolveAndSetItemTypeL( nextItem );

            TInt selectionLength = iItemFinder->CurrentItemExt().iEnd - iItemFinder->CurrentItemExt().iStart + 1;

            TCursorSelection cursorSelection;

            cursorSelection.iCursorPos = nextItem;

            cursorSelection.iAnchorPos = nextItem + selectionLength;

            if ( !TextLayout()->PosInBand( nextItem + selectionLength, dummy ) )

                {

                // Next item does not fit fully on the screen.

                // Have to move page first.

                SetCursorPosL( CursorPos(), EFalse );

                iTextView->MoveCursorL( movetype, EFalse );

                }

            iTextView->SetSelectionL( cursorSelection );

            }