/*

* 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: declares compose view

*

*/

#ifndef __CNCSCOMPOSEVIEW_H__

#define __CNCSCOMPOSEVIEW_H__

#include "cfsmailcommon.h"

#include "mfsmailrequestobserver.h"

#include <alf/alfenv.h>

#include "AknServerApp.h"

#include <AknProgressDialog.h>

#include <MsgAttachmentUtils.h>

#include "FreestyleEmailUiViewBase.h"

#include "FreestyleEmailUiConstants.h"

#include "FSComposerFetchLogic.h"

#include "FreestyleEmailUi.hrh"

#include "cmailcustomstatuspaneindicators.h"

class CNcsComposeViewContainer;

class CFSMailClient;

class CAlfControl;

class CAlfAnchorLayout;

class CFSMailBox;

class CFSMailMessage;

class CFSMailMessagePart;

class CNcsEmailAddressObject;

class CFSMailAddress;

class CFSEmailCRHandler;

class CFreestyleEmailUiAppUi;

class CAlfEnv;

class CFreestyleEmailUiSendAttachmentsListControl;

class CMsvSession;

class CAknsLayeredBackgroundControlContext;

class CFsAutoSaver;

class CAknWaitDialog;

class CActiveHelper;

class CAknStylusPopUpMenu;

class CAknToolbarExtension;

const TInt KErrNcsComposeViewNotReady = KErrNotReady - 1000;

/**

* CNcsComposeView view class.

*/

class CNcsComposeView: 

    public CFsEmailUiViewBase,

	public MAlfActionObserver,

    public MComposerFetchLogicCallback,

    public MProgressDialogCallback,

    public MAknServerAppExitObserver

    {

private:

    /**

     * Type of commit

     */

    enum TCommitType

        {

        // This is transient commit, message may get further modifications

        ETransient,

        // This is final commit, no more incoming changes

        EFinal

        };

public:   // constructors and destructor

    /**

    * NewL.

    * Two-phased constructor.

    * Construct a CNcsComposeView for the AVKON application aApp.

    * Using two phase construction,and return a pointer to the created object

    * @return a pointer to the created instance of CNcsComposeView

    */

    static CNcsComposeView* NewL( 

        CFSMailClient& aMailClient,

        CAlfEnv& aEnv, 

        CFreestyleEmailUiAppUi* aAppUi,

        CAlfControlGroup& aControlGroup,

        CMsvSession& aMsvSession );

    /**

    * NewLC.

    * Two-phased constructor.

    * Construct a CNcsComposeView for the AVKON application aApp.

    * Using two phase construction,and return a pointer to the created object

    * @return a pointer to the created instance of CNcsComposeView

    */

    static CNcsComposeView* NewLC( 

        CFSMailClient& aMailClient,

        CAlfEnv& aEnv, 

        CFreestyleEmailUiAppUi* aAppUi,

        CAlfControlGroup& aControlGroup,

        CMsvSession& aMsvSession );

    /**

    * ~CNcsComposeView.

    * Virtual Destructor.

    */

    virtual ~CNcsComposeView();

    // Exit preparation function.

    void PrepareForExit();

public: // from CFsEmailUiViewBase

    /**

    * Id

    * @return Id Uid value

    */

    TUid Id() const;

    /**

    * HandleCommandL

    * From CAknView, takes care of command handling.

    * @param aCommand Command to be handled

    */

    void HandleCommandL( TInt aCommand );

    /**

    * ChildDoDeactivate

    * Deactivate an AknView

    * Remove the container class instance from the App UI's stack and

    * deletes the instance

    */

    void ChildDoDeactivate();

    /**

    * DynInitMenuPaneL

    * Called by the framework before menu is shown to

    * show/hide items dynamically.

    * @param aResourceId The Id of the menu pane.

    * @param aMenuPane The menu pane.

    */

    void DynInitMenuPaneL( TInt aResourceId, CEikMenuPane* aMenuPane );

    /**

    * HandleDynamicVariantSwitchL

    * Recalculates component layout 

    */

    void HandleDynamicVariantSwitchL( 

            CFsEmailUiViewBase::TDynamicSwitchType aType );

public: // from MAlfActionObserver

    void HandleActionL( const TAlfActionCommand& aActionCommand );

public: // from MComposerFetchLogicCallback

    TBool FetchLogicComplete( TComposerFetchState aState, TInt aError );

public: // new functions

    /**

    * LaunchStylusPopupMenu

    * Show stylus popup menu for the attachments line

    */

    void LaunchStylusPopupMenu( const TPoint& aPenEventScreenLocation );

    /**

    * AttachmentsListControl

    * Returns pointer to attachment list control

    */       

    CFreestyleEmailUiSendAttachmentsListControl* AttachmentsListControl();

    /**

    * NewMessage

    * Returns pointer to current composer message

    */

    CFSMailMessage* NewMessage();

    /**

    * Commits changes to message. This method sets the field contents from

    * the UI to the message object, but does not save the message unless

    * explicitely requested.

    */

    void CommitL( TBool aParseAddresses = ETrue,

        TFieldToCommit aFieldToCommit = EAllFields, 

        TBool aSaveNow = EFalse,

        TCommitType aType = ETransient );

    /**

     * Saves the message content, if it has been changed since the last save.

     */

    TInt SaveMessage();

    void SaveMessageL();

    void DialogDismissedL( TInt aButtonId );

    void ShowFetchingWaitNoteL();

    TBool IsPreparedForExit();

    void AsyncExitL();

    void HandleContainerChangeRequiringToolbarRefresh();

    /**

     * Callback method for setting body content in asynchronous way.  

     */

    void SetBodyContentComplete();

    /**

     * Checks if "Opening" wait note is visible.

     */

    TBool IsOpeningWaitNoteVisible();

protected:

    void ProcessCommandL( TInt aCommand );

private: // from

    /**

     * @see CFsEmailUiViewBase::ChildDoActivateL

     */

    void ChildDoActivateL( const TVwsViewId& aPrevViewId,

            TUid aCustomMessageId,

            const TDesC8& aCustomMessage );  

    /**

     * From MAknToolbarObserver.

     */

    void DynInitToolbarL( TInt aResourceId, CAknToolbar* aToolbar );

    /**

     *  @see CFsEmailUiViewBase::OfferToolbarEventL

     */

    void OfferToolbarEventL( TInt aCommand );

    /**

     * @see CFsEmailUiViewBase::ToolbarResourceId

     */

    TInt ToolbarResourceId() const;

    /**

     * @see CFsEmailUiViewBase::GetInitiallyDimmedItemsL

     */   

    void GetInitiallyDimmedItemsL( const TInt aResourceId, 

            RArray<TInt>& aDimmedItems ) const;

    /**

     * Update toolbar items.

     */

    void RefreshToolbar();    

private: // new functions

    /**

    * HandleActivationCommandL

    * Called from DoActivateL() to do the part of view activation which depends on the

    * activation command given in TUid argument.

    */

    void HandleActivationCommandL( TUid aCustomMessageId );

    /**

    * DoSaveDraftL

    * Saves message to drafts

    * @param aAskUser If ETrue asks user whether to save.

    * @return ETrue if option was select and 

    *         EFalse if Cancel was pressed, or if saving failed.

    */

    TBool DoSaveDraftL( TBool aAskUser );

    /**

    * DoSendL

    * Sends email message.

    */

    void DoSendL();

    enum TExitMode 

        {

        ESaveDraftQuery,

        ESaveDraft,

        ENoSave

        };

    /**

    * DoSafeExit

    */

    void DoSafeExit( TExitMode aMode=ESaveDraftQuery );

    /**

    * DoExitL

    * Handler called when exiting the view.

    */

    void DoExitL( TExitMode aMode=ESaveDraftQuery );

    /**

    * DoOpenAttachmentListL

    * Saves current editor message to drafts and opens

    * attachment list

    */

    void DoOpenAttachmentListL();

    /**

    * SetAttachmentLabelContent

    * Set files from model to view label

    */       

    void SetAttachmentLabelContentL();

    /**

    * GetAttachmentsFromMail

    * get list of attachments from mail

    */       

    void GetAttachmentsFromMailL();

    /**

    * FileExistsInModel

    * Check for duplicates in model when reading attachments from mail

    */       

    TBool FileExistsInModel( TFSMailMsgId aAttachmentId );

    /**

    * DoQuickTextL

    * Display the Quick Text dialog

    */

    void DoQuickTextL();

    /**

    * AsyncAddAttachment

    * Add attachment file to message

    */

    static TInt AsyncAddAttachment( TAny* aSelfPtr );

    /**

    * RunFollowUpFlagDlgL()

    * Query user for followup flag

    */

    void RunFollowUpFlagDlgL();

    /**

    * InitFieldsL

    * Inits fields with message data.

    */       

    void InitFieldsL();

    /**

    * InitReplyFieldsL

    * Inits fields when composing reply message.

    * @param aReplyAll ETrue if this is replyall message.

    */       

    void InitReplyFieldsL( TBool aReplyAll );

    /**

    * RemoveOwnAddress

    * Removes own address while doing reply all.

    * @param aAddressList The address list.

    */       

    void RemoveOwnAddress( 

            RPointerArray<CNcsEmailAddressObject>& aAddressList );

    /**

    * InitForwardFieldsL

    * Inits fields when composing forward message.

    */       

    void InitForwardFieldsL();

    /**

    * IncludeMessageTextL

    * Inits body text when forwarding, replying, or opening draft message.

    * @param aEnsureEmptyLineInBegin When true, the function ensures there's

    *                                empty lines in the beginning of the 

    *                                message. I.e. line break(s) are inserted

    *                                in front of any quote or signature

    */        

    void IncludeMessageTextL( TBool aEnsureSpaceInBegin = EFalse );

    /**

     * Async version of IncludeMessageTextL.

     * Inits body text async when forwarding, replying message.

     * @param aEnsureEmptyLineInBegin When true, the function ensures there's empty lines

     *                                in the beginning of the message. I.e. line break(s)

     *                                are inserted in front of any quote or signature

     */

    void IncludeMessageTextAsyncL( TBool aEnsureSpaceInBegin = EFalse );

    /**

    * SetPriority

    * Sets priority when using saved draft.

    */

    void SetPriority();

    /**

     * Sets follow-up flag to status pane indicator from draft message.

     */

    void SetFollowUp();

    /**

    * GetMessageBodyL

    * Gets message body in a buffer.

    * @return Message body

    */

    HBufC* GetMessageBodyL();

    /**

    * ReturnToPreviousViewL

    * Exit editor and return to previous view

    */

    void ReturnToPreviousViewL();

    /**

    * FetchTextPartL

    * Fetch text part

    * @param aMsg The message whiches text part is to be fetched

    */

    void FetchTextPartL( CFSMailMessage& aMsg );

    /**

     * Do the needed initializations for reply/reply all/forward commands

     * depending on the iCustomMessageId.

     */

    void InitReplyOrForwardUiL();

    /**

    * GenerateReplyMessageL

    * Creates reply message

    * @param aReplyAll ETrue for reply all and EFalse for reply

    */

    void GenerateReplyMessageL( TBool aReplyAll );

    /**

    * InitReplyUiL

    * Inits UI in reply case

    * @param aReplyAll ETrue for reply all and EFalse for reply

    */

    void InitReplyUiL( TBool aReplyAll );

    /**

    * GenerateForwardMessageL

    * Creates forward message

    */

    void GenerateForwardMessageL();

    /**

    * InitForwardUiL

    * Inits UI in forward case

    */

    void InitForwardUiL();

    /**

    * InitUiGeneralL

    * Inits UI in general case

    */

    void InitUiGeneralL();

    /**

    * GenerateReplyHeaderLC

    * Creates header lines for reply/forward message

    * @return Reply header

    */

    HBufC* GenerateReplyHeaderLC();

    /**

    * GenerateSmartTagLC

    * Creates smart reply/forward tag

    * @return Smart tag

    */

    HBufC* GenerateSmartTagLC();

    /**

    * SetReplyForwardFlagL

    * Set reply/forward flag into original message if needed

    */

    void SetReplyForwardFlagL();

    /**

    * MailBoxSupportsSmartReply

    * @return ETrue if mailbox supports smart reply

    */

    TBool MailBoxSupportsSmartReply();

    /**

    * MailBoxSupportsSmartForward

    * @return ETrue if the mailbox supports smart forward

    */

    TBool MailBoxSupportsSmartForward();

    /**

    * HasUnfetchedAttachmentsL

    * @param aMsg Message to be tested

    * @return ETrue if the message has unfetched attachments

    */

    TBool HasUnfetchedAttachmentsL( CFSMailMessage& aMsg );

    /**

    * SaveToDraftsL

    * @param aParseAddresses ETrue to parse text in address fields now

    */

    void SaveToDraftsL( TBool aParseAddresses );

    void ExitComposer();

    void CreateContainerL();

    void ResetComposer();

    void SaveAndCleanPreviousMessage();

    // First start function to improve app loading perf.

    void DoFirstStartL();

    static TInt AsyncExit( TAny* aSelfPtr );

    // Gets button from toolbar extension.

    CAknButton* Button( TInt aCmdId, 

        CAknToolbarExtension* aExtension = NULL );

private:   // Constructors and destructor

    /**