#ifndef _PARAMTRANS_H_
#define _PARAMTRANS_H_

#include "mutparamiface.h"
#include "param.h"

class TwoWayMap
{
SListTempl<int> map,invmap;
void printList(const SListTempl<int>&);
public:
void reset(int size);
int get(int pos);
int invget(int pos);
void insert(int pos);
void remove(int pos);
void print();
int size() {return map.size();}
int invsize() {return invmap.size();}
};

/** wrapper for MutableParamInterface providing constant property#'s.
    \warn group membership can change if the property is removed!

    properties handling:
    - adding and removing will not change property count and property#
    - the description (ParamInterface::id/name/type) of the removed property is always "?"
    - group membership of the removed property is always 0
    - requests for property# are redirected to the new property# or ignored
    groups handling:
    - group count is constant
    - accessing group name of the removed group will return "?"
    - removed properties are moved to group 0
 */
class ParamTransaction: public ParamInterface
{
MutableParamInterface &par;
bool changed,grchanged;
CallbackNode *panode,*pdnode,*pcnode,*ganode,*gdnode,*gcnode;

#define STATRICKCLASS ParamTransaction
STCALLBACKDEF(onPropAdd);
STCALLBACKDEF(onPropDelete);
STCALLBACKDEF(onGroupAdd);
STCALLBACKDEF(onGroupDelete);
STCALLBACKDEF(onPropChange);
STCALLBACKDEF(onGroupChange);
#undef STATRICKCLASS

TwoWayMap propmap,groupmap;

void resetMaps();

  public:
ParamTransaction(MutableParamInterface &mpi);
~ParamTransaction();

void reset();
bool propChanged() {return changed;}
bool groupChanged() {return grchanged;}

int propertyPosition(int prop);
int groupPosition(int group);

int getGroupCount() {return groupmap.invsize();}
int getPropCount() {return propmap.invsize();}
const char * getName() {return par.getName();}

const char * id(int);
const char * name(int);
const char * type(int);
const char * help(int);
int flags(int);
int group(int);
const char * grname(int);
int grmember(int, int);
void call(int, class ExtValue *, class ExtValue *);
class SString getString(int);
paInt getInt(int);
double getDouble(int);
class ExtObject getObject(int);
class ExtValue getExtValue(int);
int setInt(int, paInt);
int setDouble(int, double);
int setString(int, const class SString &);
int setObject(int, const class ExtObject &);
int setExtValue(int, const class ExtValue &);

void print()
	{printf("props(");propmap.print();printf(") groups(");groupmap.print();printf(")\n");}
};

#endif