/*

* Copyright (c) 2003 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:  calss which directly deal with notepad database.

*

*/

#ifndef NSMLNOTEPADDATABASE_H

#define NSMLNOTEPADDATABASE_H

//INCLUDES

#include <d32dbms.h>

#include <badesca.h>

//CLASS Forward declarations

class CNpdItem;

class CCalSession;

class CCalInstanceView;

class CCalEntryView;

const TInt KMaxFileLength(255);

//Class declarations

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

// CNSmlNotepadDatabase

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

class CNSmlNotepadDatabase : public CBase

    {

    public:

        /**

        * Creates new instance of CNpdSmlDbModel based class.

        * @return CNpdSmlDbModel* Newly created instance.

        */

        static CNSmlNotepadDatabase* NewL();

        virtual ~CNSmlNotepadDatabase();

    private:        

		// Constructor

        CNSmlNotepadDatabase();

        /**

        * 2-phase constructor

        */

        void ConstructL();

    public: 

       	/**

        * Opens notepad database file. If file does not exist, or is corrupted,

        * a new, empty file is created.

        * @param aStoreName, name of the notepad database file name

        */

        void OpenL(const TDesC& aStoreName);

        /**

        * Adds a note to the database.

        * @param aNote the note to be added.

        * @param aKey database index of the newly added note.

        */

        void AddNoteL(CNpdItem& aNote, TInt &aKey);

        /**

        * Deletes a note from the database.

        * @param aKey database index of the note to be deleted.

        */

        void DeleteNoteL(const TInt aKey);

        /**

        * Closes the database.

        */

        void Close();

        /**

        * Reads a note from the database.

        * @param aKey database index of the desired note.

        * @param aNote reference to note object, used to return note data.

        */

        void GetNoteL(const TInt aKey, CNpdItem& aNote);

        /**

        * Updates a note in the database.

        * @param aKey database index of the note to be updated.

        * @param aItem note data. This data overrides existing note.

        */

        void UpdateNoteL(const TInt aKey, CNpdItem& aItem);

        /**

        * Empties the database. All notes are deleted.

        * @return KErrNone if successful, a system wide error code otherwise.

        */

        TInt ResetL();

        /**

        * Checks if the database has been succesfully openend

        * @return ETrue if database has been succesfully opened, EFalse otherwise

        */

        TBool IsOpen();

        /**

        * Fetch all the note items if aKey is not present. Else item with the aKey.

        * @returns array of NpdItem.

        */

        CArrayPtr<CNpdItem>* FetchItemsLC(TBool aIncludeText = EFalse, TInt* aKey = 0);

        /**

        * Close all the CalSession related sessions 

        * viz., instance view, entry view and calsession itself

        */

        void CloseAgendaSessions();

   private: // Data

        // Flag for whether database has been opened

        TBool iOpened;       

        CCalSession*        iSession;

        CCalInstanceView*   iInstanceView;

        CCalEntryView*      iEntryView;

    enum TNotepadColumnType

        {

        ENotepadKey = 1, // this must be 1 (DBMS/SQL restriction)

        ENotepadUpdateTime,

        ENotepadMemo

        };

    };

class CNpdItem : public CBase

    {

    public:

        // Destructor

        virtual ~CNpdItem();

        /**

        * Creates new instance of CNpdItem based class.

        * @return CNpdItem* Newly created instance.

        */

        static CNpdItem* NewLC();

        /**

        * Creates new instance of CNpdItem based class.

        * @param aKey database index key

        * @param aLastModified timestamp

        * @param aContent content (text) of the note

        * @return CNpdItem* Newly created instance.

        */

        static CNpdItem* NewLC(TInt aKey, const TTime& aLastModified, HBufC* aContent);

    private:

		// Constructor

        CNpdItem();

        //Overloaded Constructor

        CNpdItem(TInt aKey, const TTime& aLastModified, HBufC *content);

	public:

        /**

        * Returns database key.

        * @return key value.

        */

        TInt Key() const;

        /**

        * Returns the time stamp of the note.

        * @return when note was last modified.

        */

        TTime LastModified() const;

        /**

        * Returns content of the note

        * @return text of the note.

        */

        HBufC* Content();

        /**

        * Set note data.

        * @param aKey database index

        * @param aModTime time note was last modified

        * @param aContent content of the note

        */

        void Set(TInt aKey, const TTime& aModTime, HBufC* aContent);

        /**

        * Set key of the note

        * @param aKey key of the note.

        */

        void SetKey(TInt aKey);

        /**

        * Set content of the note

        * @param aContent text of the note.

        */

        void SetContent(HBufC* aContent);

        /**

        * Returns timestamp of the note

        * @param aLastModified time note was last modified.

        */

        void SetModified(const TTime& aLastModified);

   private:

        TInt iKey;

        TTime  iLastModified;

        HBufC* iContent; // owned

    };

#endif // NSMLNOTEPADDATABASE_H