/*

* Copyright (c) 2005 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:  

*       CUniSmilModel, Storage for Smil presentation data.

*

*/

#ifndef __UNISMILMODEL_H

#define __UNISMILMODEL_H

// INCLUDES

#include <cmsvattachment.h>

#include <unimodelconst.h>

#include <uniobjectlist.h>

#include <unismilutils.h>

// CONSTANTS

// MACROS

// FORWARD DECLARATIONS

class RResourceFile;

class CBaseMtm;

class CUniSmilSlide;

class CSmilPresentation;

class TDataType;

class CMsvEntrySelection;

class CUniDataUtils;

class CUniObject;

class CUniTextObject;

class CEikRichTextEditor;

class CMDXMLNode;

class CMDXMLElement;

class CUniSmilParams;

// DATA TYPES

typedef CArrayPtrFlat<CUniSmilSlide> CSmilSlideArray;

// FUNCTION PROTOTYPES

// CLASS DECLARATION

/**

* CUniSmilModel - Representation of SMIL presentation data.

* Hides SMIL syntax from client.

*

* @lib UniDataModel.lib

* @since 3.1

*/

class CUniSmilModel : public CBase

    {

    public:  // New methods

        /**

        * NewLC

        * Factory method that creates this object.

        *

        * @since    3.1

        * @param    aFs     IN reference to file session

        * @param    aMtm    IN reference to client mtm

        * @param    aData   IN reference to MsgData object

        * @param    aObjectList IN reference to object list

        * @return   Pointer to instance in cleanup stack

        */

        IMPORT_C static CUniSmilModel* NewLC(

            RFs& aFs,

            CBaseMtm& aMtm,

            CUniDataUtils& aData,

            CUniObjectList& aObjectList );

        /**

        * NewL

        * Factory method that creates this object.

        *

        * @since    3.1

        * @param    aFs     IN reference to file session

        * @param    aMtm    IN reference to client mtm

        * @param    aData   IN reference to MsgData object

        * @param    aObjectList IN reference to object list

        * @return   Pointer to instance

        */

        IMPORT_C static CUniSmilModel* NewL(

            RFs& aFs,

            CBaseMtm& aMtm,

            CUniDataUtils& aData,

            CUniObjectList& aObjectList );

        /**

        * Destructor

        *

        * @since    3.1

        */

        virtual ~CUniSmilModel();

        /**

        * ParseL

        * Creates presentation from either from DOM (if set) or

        * from object list (no SMIL used).

        * Set various flags according to parse results.

        *

        * This function should only leave if model cannot be made

        * because some basic Symbian OS error for example OOM. 

        * This never leaves if there is some kind of mitchmatch between 

        * presentation and actual message ie smil refers to object 

        * that does not exist. This kind of leaves are TRAPPED here

        * and if they are not the leave should be considered as an 

        * implementation bug in this function.

        *

        * @since    3.1

        * @return   Parse result flags

        */

        IMPORT_C TInt ParseL( CMDXMLDocument* aDom );

        /**

        * SetScreenSize

        * Sets size of physical dislplay in pixels

        *

        * @since    3.1

        * @param    aScreenSize     IN screen size in pixels

        */

        inline void SetScreenSize( const TSize& aScreenSize );

        /*

        * AddSlideL

        * Adds slide to model. If aSlideNum is -1 or greater than 

        * current max -> appends. Otherwise adds to given pos.

        * Zero means first.

        *

        * @since    3.1

        * @param    aSlideNum   IN insert position

        */

        IMPORT_C void AddSlideL( TInt aSlideNum = -1 );

        /**

        * RemoveSlide

        * Removes slide. Slide must be empty!

        *

        * @since    3.1

        * @param    aSlideNum   IN position of slide to be removed

        */

        IMPORT_C void RemoveSlide( TInt aSlideNum );

        /**

        * MoveSlideL

        * Moves slide.

        *

        * @since    3.1

        * @param    aSlideToMove IN the original position of slide to be moved

        * @param    aPlaceToMove IN place where slide is moved to

        */

        IMPORT_C void MoveSlideL( TInt aSlideToMove, TInt aPlaceToMove );

        /**

        * SortSlidesL

        * Sorts slides accoring to a separate comparison function

        * called SortSlidesCompare().

        * Insertion sort algorithm.

        *

        * Notice! Intended to be used with SendAs when there

        * are multiple slides - each slide containing only 

        * one object. (Sorts slides accoring to first object in

        * the slide.)

        *

        * @since    3.1

        */

        IMPORT_C void SortSlidesL();

        /*

        * IsSlide

        * Check if model contains given slide

        *

        * @since    3.1

        * @param    aSlideNum   IN slide to check

        * @return   ETrue, if slide exists,

        *           EFalse, otherwise

        */

        IMPORT_C TBool IsSlide( TInt aSlideNum ) const;

        /**

        * Adds text buffer to model.

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number where text is added

        * @param    aText   IN text buffer to be added

        * @return   Pointer to the added text object

        *           Ownership NOT transferred.

        */

        IMPORT_C CUniTextObject* AddTextObjectL(

            TInt aSlideNum, 

            CEikRichTextEditor* aText );

        /**

        * AddObjectL

        * Adds an object into msg store and smil slide

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number where text is added

        * @param    aPathToObject   IN file to be added

        * @return   Pointer to the added object

        *           Ownership NOT transferred.

        */

        IMPORT_C CUniObject* AddObjectL(

            MUniObjectSaveObserver& aObserver,

            TInt aSlideNum, 

            CMsgMediaInfo* aMedia );

        /**

        * AddStoredObjectL

        * Adds an object that is already in msg store to smil slide

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number where text is added

        * @param    aAttachmentId   IN file to be added

        * @param    aMedia      IN media info - ownership transferred to MsgObject

        * @return   Pointer to the added object

        *           Ownership NOT transferred.

        */

        IMPORT_C CUniObject* AddStoredObjectL(

            TInt aSlideNum,

            TMsvAttachmentId aAttachmentId,

            CMsgMediaInfo* aMedia );

        /**

        * RemoveObjectL

        * Deletes an object of certain type from a slide and msg store

        * if needed (last reference to the object removed).

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number where text is added

        * @param    aObject     IN the object to be removed

        * @param    aLeaveToStore IN Do not remove attachment from store

        *                            USE ONLY AS SECOND ATTEMPT IF REMOVING NORMALLY FAILS

        */

        IMPORT_C void RemoveObjectL(

            TInt aSlideNum,

            CUniObject* aObject,

            TBool aLeaveToStore = EFalse);

        /**

        * RemoveObjectByIndexL

        * Deletes the N'th object of from a slide and msg store if

        * needed (last reference to the object removed).

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number

        * @param    aObjectNum  IN number of the object to be removed

        */

        IMPORT_C void RemoveObjectByIndexL(

            TInt aSlideNum,

            TInt aObjectNum );

        /**

        * GetObjectByIndex

        * Gets object by it's layout position in slide.

        * E.g. object number "0" is the first in layout.

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number

        * @param    aObjectNum  IN number of the object

        * @return   Pointer to the object,

        *           NULL if not found

        */

        IMPORT_C CUniObject* GetObjectByIndex(

            TInt aSlideNum,

            TInt aObjectNum ) const;

        /**

        * GetObject

        * Gets object of certain type from a slide

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number

        * @param    aObjectType IN type of the object

        * @return   Pointer to the object,

        *           NULL if not found

        */

        IMPORT_C CUniObject* GetObject(

            TInt aSlideNum,

            TUniRegion aRegion ) const;

        /**

        * IsObject

        * Checks if given slide has object of certain type.

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number

        * @param    aObjectType IN type of the object

        * @param    aNum    IN the ordinal number of the object

        * @return   ETrue, slide has object of asked type,

        *           EFalse, otherwise.

        */

        //IMPORT_C TBool IsObject(

        //    TInt aSlideNum,

        //    TMsgMediaType aObjType ) const;

        /**

        * SlideCount

        * Count of slides in SMIL presentation.

        *

        * @since    3.1

        * @return   Number of slides

        */

        inline TInt SlideCount() const;

        /**

        * ObjectCount

        * Count of media objects in SMIL presentation.

        * NOTE: Smil attachment is _not_ counted as object.

        *

        * @since    3.1

        * @return   Number of objects

        */

        IMPORT_C TInt ObjectCount() const;

        /**

        * SlideObjectCount

        * Count of media objects in given slide

        *

        * @since    3.1

        * @param    aSlideNum   IN slide number

        * @return   Number of objects on the slide

        */

        IMPORT_C TInt SlideObjectCount( TInt aSlideNum ) const;

        /**

        * Layout

        * Accessor. Queries current layout. Layout is same for all slides.

        *

        * @since    3.1

        * @return   Layout

        */

        inline TUniLayout Layout() const;

        /**

        * SetLayoutL

        * Mutator. All slides have same layout.

        * NOTE: This should only be called from editor objectsview

        * ChangeOrder command. Layout is automatically determined

        * at parse time.

        *

        * @since    3.1

        * @param    aLayout IN new layout to be set

        */

        IMPORT_C void SetLayoutL( TUniLayout aNewLayout ); 

        /**

        * Returns the (estimate) total size of SMIL.

        *

        * @since    3.1

        * @return   Total size in bytes

        */

        IMPORT_C TInt SmilComposeSize();

        /**

        * SmilComposeSize

        * Returns the (estimate) size of SMIL from beginning to the

        * object given as parameter.

        *

        * @since    3.1

        * @param    aToSlideNum     IN calculate till this slide

        *                              (From "1" to "SlideCount")

        * @param    aToObjectNum    IN calculate till this object

        *                              (From "1" to "SlideObjectCount")

        * @return   Size in bytes

        */

        IMPORT_C TInt SmilComposeSize(

            TInt aToSlideNum,

            TInt aToObjectNum );

        /**

        * RemoveEmptySlides

        * Removes empty all slides from the presentation

        *

        * @since    3.1

        */

        IMPORT_C void RemoveEmptySlides();

        /**

        * ComposeL

        * Composes new SMIL from current model content. SMIL is created as 

        * an attachment to message.

        * Old SMIL should be deleted before calling this.

        *

        * @since    3.1

        * return    Pointer to new DOM

        */

        IMPORT_C CMDXMLDocument* ComposeL();

        /**

        * ChangeLayoutL

        * Changes layout of SMIL to match Series 60 created SMIL

        *

        * @since 3.1

        * @param aDom   SMIL DOM to be changed

        * @return ETrue if layout could be changed

        *         EFalse if layout couldn't be changed (e.g. missing head or root-region)

        */

        IMPORT_C TBool ChangeLayoutL( CMDXMLDocument* aDom );

        /**

        * CorrectTimingL

        * Correct timing of media objects on SMIL if it is invalid.

        *

        * @since  3.1

        * @param  aDom   SMIL DOM

        * @return ETrue if timing is valid.

        *         EFalse if timing couldn't be corrected (e.g. missing body)

        */

        IMPORT_C TBool CorrectTimingL( CMDXMLDocument* aDom );

        /**

        * Determines if given media type can be added to the SMIL model.

        *

        * @since 3.1

        * @param aMediaType Tested media type

        * @return ETrue if media type can be added to the SMIL model.

        *         EFalse if media type cannot be added

        */

        IMPORT_C TBool IsSupportedMediaType( TMsgMediaType aMediaType ) const;

        /**

        * Maximum number of slide in MMS message. 

        *

        * @return 0 or less if not specified. Otherwise maximum slide limit.

        */

        inline TInt MaxSlideCount() const;

        /**

        * Sets maximum slide limit. 

        *

        * @param aSlideCount Maximum slide count.

        */

        inline void SetMaxSlideCount( TInt aSlideCount );

        /**

        * Returns whether maximum slide count has been reached.

        *

        * @return ETrue if maximum slide count is set and has been reached.

        *         EFalse otherwise.

        */

        inline TBool MaxSlideCountReached() const;

    private:

        /**

        * Constructor.

        *

        * @since    3.1

        * @param    aFs     IN reference to file session

        * @param    aMtm    IN reference to client mtm

        * @param    aData   IN reference to MsgData object

        * @param    aObjectList IN reference to object list

        */

        CUniSmilModel(

            RFs& aFs,

            CBaseMtm& aMtm,

            CUniDataUtils& aData,

            CUniObjectList& aObjectList );

        /**

        * 2nd phase constructor.

        *

        * @since    3.1

        */

        void ConstructL();

        /**

        * DoPresentationFromDomL

        * Makes a presentation (model content) from DOM.

        *

        * @since    3.1

        * @return   ETrue, if created successfully,

        *           EFalse, otherwise

        */

        void DoPresentationFromDomL( CMDXMLDocument* aDom );

        /**

        * IsMessageSlide

        * Check if messages attachments fit into slide (no smil case)

        *

        * @since    3.1

        * @return   ETrue, if all objects fit into slide,

        *           EFalse, otherwise

        */

        TBool IsMessageSlide();

        /**

        * DoNoSmilOneSlide

        * Makes presentation (max one slide) from object list. Message

        * may contain SMIL, but when calling this function it should be

        * clear that model cannot be made as SMIL describes.

        *

        * @since    3.1

        */

        void DoNoSmilOneSlideL();

        /**

        * DoNoSmilManySlide

        * Makes presentation from object list. Message may contain SMIL,

        * but when calling this function it should be clear that model cannot

        * be made as SMIL describes.

        *

        * @since    3.1

        */

        void DoNoSmilManySlideL();

        /**

        * AddSlideFromDomL

        * Used when creating presentation from SMIL

        *

        * @since    3.1