/*

* 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 class

*

*/

// INCLUDE FILES

#include "emailtrace.h"

#include <aknnotewrappers.h>

#include <NpdApi.h>

#include <StringLoader.h>

#include <txtrich.h>

#include <AknWaitDialog.h>

#include <MsgAttachmentUtils.h>

#include <featmgr.h>

#include "cfsmailbox.h"

#include "cfsmailmessage.h"

#include "cfsmailaddress.h"

#include "cfsmailclient.h"

#include "cfsmailcommon.h"

#include <csxhelp/cmail.hlp.hrh>

#include <akntoolbar.h>

#include <akntoolbarextension.h>

#include <AknUtils.h>

#include <FreestyleEmailUi.rsg>

#include <freestyleemailui.mbg>

#include <aknstyluspopupmenu.h>

#include <wlaninternalpskeys.h>

#include "ncscomposeview.h"

#include "ncscomposeviewcontainer.h"

#include "ncsconstants.h"

#include "ncsutility.h"

#include "ncsemailaddressobject.h"

#include "freestyleemailcenrephandler.h"

#include "FreestyleEmailUi.hrh"

#include "FreestyleEmailUiConstants.h"

#include "FreestyleEmailUiSendAttachmentsListControl.h"

#include "FreestyleEmailUiSendAttachmentsListVisualiser.h"

#include "FreestyleEmailUiSendAttachmentsListModel.h"

#include "FreestyleEmailUiUtilities.h"

#include "FreestyleEmailUiConstants.h"

#include "FSAutoSaver.h"

#include "FSEmail.pan"

#include "cmailmessageext.h"

// line separators that should not appear in Subject

_LIT(KLineSeparators, "\u2029");

const TChar KReplacementChar = ' ';

#pragma mark +++COMPOSE VIEW - CONSTRUCTORS AND DESTRUCTORS

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

// Safe pointer deletion

//

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

//

template <class T> void SafeDelete( T*& aPtr )

    {

    delete aPtr;

    aPtr = NULL;

    }

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

// CNcsComposeView::CNcsComposeView()

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

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

//

CNcsComposeView::CNcsComposeView( CFreestyleEmailUiAppUi& aAppUi,

    CAlfEnv& aEnv, CAlfControlGroup& aSendAttachmentControlGroup,

    CFSMailClient& aMailClient, CMsvSession& aMsvSession )

    : CFsEmailUiViewBase( aSendAttachmentControlGroup, aAppUi ),

     iMailClient( aMailClient ), iOrigMessage( NULL ), iNewMessage( NULL ),

     iMsvSession( aMsvSession ), iEnv( aEnv ),

     iFakeSyncGoingOn(EFalse), iFetchDialogCancelled(EFalse),

     iExecutingDoExitL( EFalse ),

     iMessageTextPartModified( EFalse ), iMessageModified( EFalse ), 

     iIncludeMessageTextAsync( EFalse ), iChildActivationState( EChildActivationDeactivated )

    {

    FUNC_LOG; 

    iAttachmentListSaveDraft = EFalse;

    }

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

// CNcsComposeView::NewL()

// Two-phased constructor.

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

//

CNcsComposeView* CNcsComposeView::NewL( 

        CFSMailClient& aMailClient, CAlfEnv& aEnv,

        CFreestyleEmailUiAppUi* aAppUi, CAlfControlGroup& aControlGroup,

        CMsvSession& aMsvSession )

    {

    FUNC_LOG;

    CNcsComposeView* self = 

        CNcsComposeView::NewLC( aMailClient, aEnv, aAppUi,

                                aControlGroup, aMsvSession );

    CleanupStack::Pop( self );

    return self;

    }

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

// CNcsComposeView::NewLC()

// Two-phased constructor.

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

//

CNcsComposeView* CNcsComposeView::NewLC(

    CFSMailClient& aMailClient,

    CAlfEnv& aEnv,

    CFreestyleEmailUiAppUi* aAppUi,

    CAlfControlGroup& aControlGroup,

    CMsvSession& aMsvSession )

    {

    FUNC_LOG;

    CNcsComposeView* self = new ( ELeave ) CNcsComposeView( 

            *aAppUi, aEnv, aControlGroup, aMailClient, aMsvSession );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CNcsComposeView::ConstructL()

// Symbian 2nd phase constructor can leave.

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

//

void CNcsComposeView::ConstructL()

    {

    FUNC_LOG;

    BaseConstructL( R_NCS_COMPOSE_VIEW );

    iFirstStartCompleted = EFalse;

    }

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

// CNcsComposeView::DoFirstStartL()

// Purpose of this function is to do first start only when msg details is

// really needed to be shown. Implemented to make app startuo faster.

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

//

void CNcsComposeView::DoFirstStartL()

    {

    FUNC_LOG;

    // Attachment list for compose screen, owned by AlfEnv

    CAlfControlGroup& attListControlGroup = 

        iEnv.NewControlGroupL( KSendAttachmentManagerDisplayGroup );

    CFSEmailUiSendAttachmentsListVisualiser* sendAttachmentVisualiser =

        CFSEmailUiSendAttachmentsListVisualiser::NewLC(

            iEnv, &iAppUi, attListControlGroup );

    iAppUi.AddViewL( sendAttachmentVisualiser );

    CleanupStack::Pop( sendAttachmentVisualiser );

    iCrHandler = CFSEmailCRHandler::InstanceL(); // singleton, not owned

    iEnv.AddActionObserverL( this );

    iAutoSaver = CFsAutoSaver::NewL( iEnv, KAutoSaveTimeDelayMs );

    iAutoSaver->Enable( EFalse );

    iFirstStartCompleted = ETrue;

    iCheckQuery = EFalse;

    iAsyncCallback = new (ELeave) CAsyncCallBack( CActive::EPriorityLow );

    // msk context menu added into composer

    MenuBar()->SetContextMenuTitleResourceId( R_NCS_COMPOSE_BODY_MSK_MENUBAR );

    iActiveHelper = CActiveHelper::NewL( this );

    iAsyncAttachmentAdd = 

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

    // Initializing the default stylus long tap popup menu

	if( !iStylusPopUpMenu )

		{

		TPoint point( 0, 0 );

		iStylusPopUpMenu = CAknStylusPopUpMenu::NewL( this, point );

		TResourceReader reader;

		iCoeEnv->CreateResourceReaderLC( reader,

				R_STYLUS_POPUP_MENU_COMPOSE_VIEW_ATTACHMENT );

		iStylusPopUpMenu->ConstructFromResourceL( reader );

		CleanupStack::PopAndDestroy(); // reader

		}

    }

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

// CNcsComposeView::~CNcsComposeView()

// Destructor.

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

//

CNcsComposeView::~CNcsComposeView()

    {

    FUNC_LOG;

	delete iAutoSaver;

	if ( iAsyncCallback )

	    {

	    iAsyncCallback->Cancel();

	    delete iAsyncCallback;

	    }

    delete iFetchLogic;

    if( iActiveHelper )

        {

        iActiveHelper->Cancel();

        delete iActiveHelper;

        }

    if ( iAsyncAttachmentAdd )

        {

        iAsyncAttachmentAdd->Cancel();

        delete iAsyncAttachmentAdd;

        }

    delete iStylusPopUpMenu;

    }

void CNcsComposeView::PrepareForExit()

    {

    FUNC_LOG;

    if ( iCheckQuery && iDlg )

        {

        TKeyEvent check = { EKeyEscape, EStdKeyNull, 0, 0 };

        TRAP_IGNORE( iDlg->OfferKeyEventL( check, EEventKey ) );

        iDlg = NULL;

        iAsyncCallback->Cancel(); // cancel any outstanding callback

        iAsyncCallback->Set( TCallBack( AsyncExit, this ) );

        iAsyncCallback->CallBack();

        }

    else if( iFakeSyncGoingOn || iExecutingDoExitL )

        {

        // low priority active obj so that iwait in plugins finish

        iActiveHelper->Cancel();

        iActiveHelper->Start();

        }

    else if ( iIncludeMessageTextAsync )

    	{

		if ( iContainer )

			{

    		iContainer->StopAsyncTextFormatter();

			}

		ResetComposer();

		iAsyncCallback->Cancel(); // cancel any outstanding callback

		iAsyncCallback->Set( TCallBack( AsyncExit, this ) );

		iAsyncCallback->CallBack();

    	}

    else

        {

        DoSafeExit( ESaveDraft );

        // cleaning - usefull when application is closed from task switcher

        HideToolbar();

        }

    if( iFetchLogic )

        {

        iFetchLogic->CancelFetchings();

        }

    }

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

// CNcsComposeView::Id()

// Returns View's ID.

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

//

TUid CNcsComposeView::Id() const

    {

    FUNC_LOG;

    return MailEditorId;

    }

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

// CNcsComposeView::ChildDoActivateL()

// Activate the Compose view

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

//

void CNcsComposeView::ChildDoActivateL( const TVwsViewId& aPrevViewId,

    TUid aCustomMessageId, const TDesC8& aCustomMessage )

    {

    FUNC_LOG;

    iChildActivationState = EChildActivationStarted;

    // needed when "Opening" (replying/forwarding)note is shown and 

    // we receive incoming call- Email application goes to background.

    // When coming back to application the view is activated and reseted.

    // That's why we prevent activation and the same is done in ChildDoDeactivate

    if ( iIncludeMessageTextAsync )

        {

        return;

        }

    if ( !iFirstStartCompleted )

        {

        DoFirstStartL();

        }

    Toolbar()->SetDimmed( ETrue );

    // Set status pane indicators

    iStatusPaneIndicators = iAppUi.GetStatusPaneIndicatorContainer();

    iStatusPaneIndicators->ShowStatusPaneIndicators();

    // Notify base class about view being entered unless 

    // returned from another view

    if ( aCustomMessageId.iUid != KEditorCmdReturnToPrevious )

        {

        ViewEntered( aPrevViewId );

        }

    // Cleanup the previous message before opening a new one

    SaveAndCleanPreviousMessage();

    // Get the launch parameters

    if ( aCustomMessageId.iUid == KEditorCmdReturnToPrevious )

        {

        // Use previous launch parameters when returning to previously 

        // opened message

        iMailBox = iMailClient.GetMailBoxByUidL( iLaunchParams.iMailboxId );

        }

    else if ( aCustomMessage.Length() > 0 )

        {

        TPckgBuf<TEditorLaunchParams> buf( iLaunchParams );

        buf.Copy( aCustomMessage );

        iLaunchParams = buf();

        iMailBox = iMailClient.GetMailBoxByUidL( iLaunchParams.iMailboxId );

        }

    else

        {

        iLaunchParams.iActivatedExternally = ETrue;

        }

    // Inform the AppUi about external view activation to fix the view stack.

    // Normally this happens based on the previous view AppUid in the BaseView

    // but in case contacts action menu was used within FsEmail, this doesn' 

    // work. It doesn't hurt to call this again even if it was already called

    // once from BaseView.

    if ( iLaunchParams.iActivatedExternally )

        {

        }

    // Try to get the mailbox by other means if using launch parameters failed

    if ( !iMailBox )

        {

        TInt error( KErrNone );

        // can we get it from MSV Id

        // MSV id is passed to us when account is defined email key settings

        if ( aCustomMessageId != TUid::Null() )

            {

            TRAP( error, iMailBox = TFsEmailUiUtility::GetMailboxForMtmIdL( 

                    iMailClient, iMsvSession, aCustomMessageId.iUid ) );

            }

        error = KErrNone;

        // try to use mailbox set as default in MCE

        if ( !iMailBox )

            {

            TRAP( error, iMailBox = TFsEmailUiUtility::GetMceDefaultMailboxL(

                    iMailClient, iMsvSession ) );

            }

        // use first mail account from the list

        if ( !iMailBox )

            {

            TFSMailMsgId id;

            RPointerArray<CFSMailBox> mailboxes;

            CleanupResetAndDestroyClosePushL( mailboxes );

            iMailClient.ListMailBoxes( id, mailboxes );

            if ( mailboxes.Count() > 0 )

                {

                iMailBox = 

                    iMailClient.GetMailBoxByUidL( mailboxes[0]->GetId() );

                }

            CleanupStack::PopAndDestroy( &mailboxes );

            }

        // could not get mailbox so leave

        if ( !iMailBox )

            {

            User::Leave( KErrGeneral );

            }

        aCustomMessageId = TUid::Uid( KEditorCmdCreateNew );

        }

    iMailSent = EFalse;

    iMailSendFailed = EFalse;

    iCustomMessageId = aCustomMessageId;

    CreateContainerL();

    TRAPD( err, HandleActivationCommandL( aCustomMessageId ) );

    if ( !err )

        {

        err = iMailFetchingErrCode;

        }

    if ( err == KErrCancel || 

         err == KErrCouldNotConnect || 

         err == KErrConnectionTerminated )

        {

        // Just close composer without any notes if operation was cancelled.

        // For connection errors, DownloadInfoMediator already shows error 

        // message, so no need to show another one.

        ExitComposer();

        }

    else if ( err )

        {

        // some other error => show generic error note and close composer

        if( !iAppUi.AppUiExitOngoing() )

            TFsEmailUiUtility::ShowErrorNoteL( 

                R_FREESTYLE_EMAIL_ERROR_GENERAL_UNABLE_TO_COMPLETE, ETrue );

        ExitComposer();

        }

    else

        {

        // everything went fine => do rest of the generic initialization

        InitUiGeneralL();

        iAppUi.StartEndKeyCapture();

        iContainer->SetMskL();

        iViewReady = ETrue;

        Toolbar()->SetDimmed( EFalse );

        RefreshToolbar();

        iContainer->ActivateL();

    // if there is a embedded app in FSEmail.

    if( iAppUi.EmbeddedApp() )

            {

            // Set email editor started from embedded app flag to true 

            // so that we can switch view correct when sent email.

            iAppUi.SetEditorStartedFromEmbeddedApp( ETrue );

        RWsSession rwsSession;

            User::LeaveIfError( rwsSession.Connect() );

            CleanupClosePushL( rwsSession );

        // Simulate a back key to exit embedded app 

            // so that email editor could show on the top level.

            TKeyEvent KeyEvent = TKeyEvent();

            // this is neccesary for photogalery image viewer (don't remove)

            KeyEvent.iScanCode = EStdKeyUpArrow;

            rwsSession.SimulateKeyEvent( KeyEvent );

            KeyEvent.iCode = EKeyCBA2;

            rwsSession.SimulateKeyEvent( KeyEvent );

        rwsSession.Close();

            CleanupStack::PopAndDestroy( &rwsSession );

            }

    if ( iIncludeMessageTextAsync )

            {

            // including message body in async way

            IncludeMessageTextAsyncL( ETrue );

            }

        iViewFullyActivated = ETrue;

        iChildActivationState = EChildActivationProcessed;

    TIMESTAMP( "Editor launched" );

        return; // ok

        }

// problems with init close the view asynchronously

    iViewFullyActivated = EFalse;

    iChildActivationState = EChildActivationExitRequired;

//    iFakeSyncGoingOn = EFalse; iExecutingDoExitL = EFalse;

    iActiveHelper->Start(); // calls AsyncExit()

    TIMESTAMP( "Editor NOT launched" );

    return;

    }

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

// Initialises toolbar items.

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

//

void CNcsComposeView::DynInitToolbarL( TInt aResourceId,

    CAknToolbar* aToolbar )

    {

    FUNC_LOG;

    if ( aResourceId == EFsEmailUiTbCmdExpandActions && aToolbar )

        {

        CAknToolbarExtension* ext = aToolbar->ToolbarExtension();

        if ( iContainer )

            {

            // Set correct state for show/hide cc field button.

            CAknButton* ccButton = Button( EFsEmailUiTbCmdCcField, ext );

            if ( ccButton )

                {

                TInt index = iContainer->IsCcFieldVisible() ? 1 : 0;

                ccButton->SetCurrentState( index, EFalse );

                // Command is dimmed, if there is content in the field.

                ccButton->SetDimmed( iContainer->GetCcFieldLength() > 0 );

                }

            // Set correct state for show/hide bcc field button.

            CAknButton* bccButton = Button( EFsEmailUiTbCmdBccField, ext );