/*
 * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */
#ifndef VALUE_HANDLER_ROSTER_H
#define VALUE_HANDLER_ROSTER_H


#include <Locker.h>
#include <ObjectList.h>


class TableCellValueRenderer;
class Value;
class ValueFormatter;
class ValueHandler;


typedef BObjectList<ValueHandler> ValueHandlerList;


class ValueHandlerRoster {
public:
                                                                ValueHandlerRoster();
                                                                ~ValueHandlerRoster();

        static  ValueHandlerRoster*     Default();
        static  status_t                        CreateDefault();
        static  void                            DeleteDefault();

                        status_t                        Init();
                        status_t                        RegisterDefaultHandlers();

                        status_t                        FindValueHandler(Value* value,
                                                                        ValueHandler*& _handler);
                                                                        // returns a reference
                        status_t                        GetValueFormatter(Value* value,
                                                                        ValueFormatter*& _formatter);
                                                                        // returns a reference
                        status_t                        GetTableCellValueRenderer(Value* value,
                                                                        TableCellValueRenderer*& _renderer);
                                                                        // returns a reference

                        bool                            RegisterHandler(ValueHandler* handler);
                        void                            UnregisterHandler(ValueHandler* handler);

private:
                        BLocker                         fLock;
                        ValueHandlerList        fValueHandlers;
        static  ValueHandlerRoster*     sDefaultInstance;
};


#endif  // VALUE_HANDLER_ROSTER_H