# Source: hk_classes/hk_classes/hk_dbvisible.h

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    // ****************************************************************************
    // copyright (c) 2000-2004 Horst Knorr <hk_classes@knoda.org>
    // This file is part of the hk_classes library.
    // This file may be distributed and/or modified under the terms of the
    // GNU Library Public License version 2 as published by the Free Software
    // Foundation and appearing in the file COPYING included in the
    // packaging of this file.
    // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    // ****************************************************************************
    #ifndef HK_DBVISIBLE
    #define HK_DBVISIBLE
    #include "hk_visible.h"
    using namespace std;

    class hk_database;
    /**
     *
     *@short base class for database depending only widgets
     *@version $Revision: 1.11 $
     *@author Horst Knorr (hk_classes@knoda.org)
     *
     *base class for database depending only widgets. Just set the database with @ref set_database
     */
    class hk_dbvisible :public hk_visible
    {
        friend class hk_database;
        public:
            hk_dbvisible(hk_presentation* p=NULL);
            virtual     ~hk_dbvisible(void);
    /**
     * the database which is base of this object
     */
            void        set_database(hk_database* db);
            hk_database*    database(void);
        protected:
            virtual void    database_delete(void);
    /**
     *FOR WIDGET DEVELOPERS ONLY:
     *will be automatically called before the database will be closed.(i.e when a new database will
     *be created and the old one will be destroyed by hk_connection
     */

            virtual void        before_source_vanishes(void);

            hk_database* p_database;

        private:
    //p_already_handled  is used from hk_database in bulk operations to find out if this object has been already handled.
            bool    p_already_handled;

    };
    #endif

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