/*

* Copyright (c) 2010 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: Email Client API definitions

*

*/

#ifndef __EMAILAPIDEFS

#define __EMAILAPIDEFS

#include <e32base.h>

#include <f32file.h>

namespace EmailInterface {

/**

* Id for message, message part, folder and mailbox entries

*/

typedef TUint TEntryId;

/**

* Interface id. Each implementation of MEmailInterface has unique id value.

*/

typedef TInt TEmailTypeId;

const TEntryId KUndefinedEntryId = 0;

/**

 * base interface for all email interfaces available to clients

 * @since S60 v5.0

 */

class MEmailInterface

{

public:

    /** returns interface id (kind of RTTI) */

    virtual TEmailTypeId InterfaceId() const = 0;

    /** frees memory allocated by interface impl. */    

    virtual void Release() = 0;

};

/**

 * Defines abstraction for entry ID. Used by message, folder, mailbox etc types.

 * @since S60 v5.0

 */

class TBaseId

{

public:

    inline TBaseId() : iId( KUndefinedEntryId ){}

    inline TBaseId( TEntryId aId ) : iId( aId ){}

    TEntryId   iId;

};

/**

 * Defines mailbox ID

 * @since S60 v5.0

 */

class TMailboxId : public TBaseId  

{

public:

    inline TMailboxId() : 

        TBaseId(){}

    inline TMailboxId( TEntryId aId ) : TBaseId( aId ){}

    inline TBool operator==( const TMailboxId& aMailboxId ) const {

        return ( aMailboxId.iId == iId ); }

};

/**

 * Defines folder ID which is associated with a mailbox

 * @since S60 v5.0

 */

class TFolderId : public TBaseId

{

public:

    // parent mailbox

    TMailboxId iMailboxId;

    inline TFolderId( TEntryId aId, const TMailboxId& aMailboxId ) : 

        TBaseId( aId ),iMailboxId( aMailboxId.iId ){}

    inline TFolderId() : TBaseId(), iMailboxId() {}

    inline TBool operator==( const TFolderId& aFolderId ) const {

        return ( iMailboxId.iId == aFolderId.iMailboxId.iId &&

        iId == aFolderId.iId ); }

    inline TBool operator!=( const TFolderId& aFolderId ) const {

        return !( aFolderId == *this ); }

};

/**

 * Defines email message ID which is associated with a mailbox and folder

 * @since S60 v5.0

 */

class TMessageId : public TBaseId

{

public:

    inline TMessageId() : TBaseId(), iFolderId(){}

    inline TMessageId( TEntryId aMsgId, TEntryId aFolderId, TMailboxId aMailboxId ) : 

    TBaseId( aMsgId ), iFolderId( aFolderId, aMailboxId ){}

    inline TBool operator==( const TMessageId& aMessageId ) const {

        return ( iFolderId == aMessageId.iFolderId &&

        iId == aMessageId.iId ); }

    inline TBool operator!=( const TMessageId& aMessageId ) const {

        return !( aMessageId == *this ); }

    /**

    * parent folder id.

    */

    TFolderId iFolderId;

};

/**

 * Message content (part) id

 * @since S60 v5.0

 */

class TMessageContentId : public TBaseId

{

public:

    inline TMessageContentId(): TBaseId(), iMessageId() {}

    inline TMessageContentId( TEntryId aContentId, TEntryId aMsgId, TEntryId aFolderId, TMailboxId aMailboxId ) : 

    TBaseId( aContentId ), iMessageId( aMsgId, aFolderId, aMailboxId ){}

    inline TBool operator==( const TMessageContentId& aContentId ) const {

        return ( iMessageId == aContentId.iMessageId &&

        iId == aContentId.iId ); }

    inline TBool operator!=( const TMessageContentId& aContentId ) const {

        return !( aContentId == *this ); }

    // parent message

    TMessageId iMessageId;

};

typedef RArray<TMessageId> REmailMessageIdArray;

typedef RArray<TFolderId>  REmailFolderIdArray;

typedef RArray<TMailboxId>     REmailMailboxIdArray;

} // EmailInterface

#endif // __EMAILAPIDEFS