source: cpp/frams/param/paramtrans.h @ 1209

#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