/*

* 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:  

*       CUniObjectList, List of attachments. 

*

*/

#ifndef __UNIOBJECTLIST_H

#define __UNIOBJECTLIST_H

// INCLUDES

#include <e32std.h>

#include <f32file.h>

#include <apmstd.h>

#include <cmsvattachment.h>

#include <MMediaFactoryFileInfo.h>

#include <uniobject.h>

// CONSTANTS

// MACROS

// FORWARD DECLARATIONS

class CUniDataUtils;

class CMDXMLDocument;

class CMDXMLNode;

class CUniObjectList;

// DATA TYPES

// FUNCTION PROTOTYPES

// CLASS DECLARATION

/**

* MUniObjectListObserver - Callback API for object list operations.

*

* @since 3.1

*/

class MUniObjectListObserver

    {

    public:

        /**

        * Called when object is added to the list.

        * 

        * @since 3.1

        * @param aList IN List where object is added.

        * @param aObject IN Added object.

        * @param aIndex IN Index number of added object.

        */

        virtual void ObjectAddedL( CUniObjectList* aList, 

                                   CUniObject* aObject,

                                   TInt aIndex ) = 0;

        /**

        * Called when object is removed from the list.

        * 

        * @since 3.1

        * @param aList IN List where object is added.

        * @param aObject IN Removed object.

        * @param aIndex IN Index number of removed object.

        */

        virtual void ObjectRemovedL( CUniObjectList* aList, 

                                     CUniObject* aObject,

                                     TInt aIndex ) = 0;

    };

/**

* CUniObjectList - List of attachments. 

*

* @lib UniDataModel.lib

* @since 3.1

*/

class CUniObjectList : public CBase, 

                       public MMediaFactoryFileInfo,

                       public MUniObjectSaveObserver

    {

    public:  // New methods

        /**

        * Factory method that creates this object.

        *

        * @since    3.1

        * @param    aMtm    IN reference to client mtm

        * @param    aData   IN reference to MsgData object

        * @return   Pointer to instance

        */

        IMPORT_C static CUniObjectList* NewL( CBaseMtm& aMtm, CUniDataUtils& aData );

        /**

        * Destructor

        *

        * @since    3.1

        */

        virtual ~CUniObjectList();

        /**

        * AddObjectL

        * Appends object to object array.

        *

        * @since    3.1

        * @param    aObject     IN object to be added

        */

        IMPORT_C void AddObjectL( CUniObject* aObject );

        /**

        * SpaceNeededForSaveAll

        * Calculates disk space needed to save all objects

        * that are not yet saved into message store.

        *

        * @since    3.1

        * @return   Disk space needed in bytes

        */

        IMPORT_C TInt SpaceNeededForSaveAll();

        /**

        * SaveAll

        * Calls SaveL for each object in the object array

        *

        * @since    3.1

        * @param    aObserver   IN operation observer

        * @param    aSaveType   IN save type

        */

        IMPORT_C void SaveAll( MUniObjectSaveObserver& aObserver, CMsvAttachment::TMsvAttachmentType aSaveType );

        /**

        * RemoveAllObjectsL

        * Removes all objects from message store and object

        * array. Deletes all objects.

        *

        * @since    3.1

        */

        IMPORT_C void RemoveAllObjectsL();

        /**

        * RemoveObjectL

        * Removes an object from object array and also from

        * message store if requested.

        * The caller must delete the object!!!

        *

        * @since    3.1

        * @param    aObject IN object to be removed

        * @param    aRemoveFromStore    IN if EFalse remove only from object array,

        *                               if ETrue remove also from message store

        */

        IMPORT_C void RemoveObjectL( CUniObject* aObject, TBool aRemoveFromStore = ETrue );

        /**

        * GetByIndex

        * Get object by index

        *

        * @since    3.1

        * @param    aIndex  IN index

        * @return   Pointer to object

        */

        IMPORT_C CUniObject* GetByIndex( TInt aIndex );

        /**

        * GetByAttachmentId

        * Get object by attachment id

        *

        * @since    3.1

        * @param    aAttachmentId   IN attachment id

        * @return   Pointer to object

        */

        IMPORT_C CUniObject* GetByAttachmentId( TMsvAttachmentId aAttachmentId );

        /**

        * GetByNode

        * Get object by DOM node

        *

        * @since    3.1

        * @param    aNode   IN DOM node

        * @return   Pointer to object

        */

        IMPORT_C CUniObject* GetByNodeL( CMDXMLNode* aNode );

        /**

        * GetByUrl

        * Get object by URL

        *

        * @since    3.1

        * @param    aUrl    IN URL

        * @return   Pointer to object

        */

        IMPORT_C CUniObject* GetByUrlL( const TDesC& aUrl );

        /**

        * Implementation of MMediaFactoryFileInfo

        */

        IMPORT_C void GetFileHandleL( const TDesC& aUrl, RFile& aFile );

        /**

        * Implementation of MMediaFactoryFileInfo

        */

        IMPORT_C TPtrC8 GetMimeTypeL( const TDesC& aUrl );

        /**

        * Implementation of MMediaFactoryFileInfo

        */

        IMPORT_C TUint GetCharacterSetL( const TDesC& aUrl );

        /**

        * ObjectByteSize

        * Calculate size of all the objects in bytes

        *

        * @since    3.1

        * @return   Size in bytes

        */

        IMPORT_C TInt ObjectByteSize() const;

        /**

        * EnsureAllObjectsHaveContentLocationL

        * Makes sure that all objects have ContentLocation

        * MIME header defined. All objects must have ContentLocation

        * when SMIL is composed.

        *

        * @since    3.1

        */

        IMPORT_C void EnsureAllObjectsHaveContentLocationL();

        /**

        * SetListObserver

        * Sets observer to the list that changes to list are notified.

        *

        * @since    3.1

        * @param aObserver IN New object list observer. Setting observer

        *                     to NULL resets observer.

        */

        IMPORT_C void SetListObserver( MUniObjectListObserver* aObserver );

        /**

        * Returns object based on unique handle. 

        *

        * @param  aUniqueControlHandle Control handle that uniquely identified the control

        * @return Pointer to matched uniobject or NULL if not found.

        */

        IMPORT_C CUniObject* GetObjectByUniqueHandle( TInt aUniqueControlHandle );

        /**

        * Count

        *

        * @since    3.1

        * @return   Number of objects

        */

        inline TInt Count() const;

    public:

        /**

        * From MUniObjectSaveObserver

        */

        void ObjectSaveReady( TInt aError );

    protected: 

        /**

        * Constructor.

        *

        * @since    3.1

        * @param    aMtm    IN reference to client mtm

        * @param    aData   IN reference to MsgData object

        */

        CUniObjectList( CBaseMtm& aMtm, CUniDataUtils& aData );

        /**

        * 2nd phase constructor.

        *

        * @since    3.1

        */

        void ConstructL();

    protected: // data

        CArrayPtrFlat<CUniObject>* iObjectArray;

        CUniDataUtils& iData;

        CBaseMtm& iMtm;

        MUniObjectSaveObserver* iSaveObserver;

        CMsvAttachment::TMsvAttachmentType iSaveType;

        TInt iSaveCount;

        MUniObjectListObserver* iListObserver;

    };

#include <uniobjectlist.inl>

#endif // __UNIOBJECTLIST_H