attribparamgroup.h

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#ifndef attribparamgroup_h
#define attribparamgroup_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Kristofer Tingdahl
 Date:          10-12-1999
 RCS:           $Id$
________________________________________________________________________
*/

#include "attribparam.h"
#include "datainpspec.h"
#include "bufstringset.h"

namespace Attrib
{

template <class PT>
mClass(AttributeEngine) ParamGroup : public Param
{
public:

                        ParamGroup( int startsz, const char* prefix,
                                    const PT& templ);
                        ParamGroup(const ParamGroup&);
                        ~ParamGroup();

    ParamGroup<PT>*     clone() const;
    bool                isOK() const;
    const char*         errMsg() const;
    bool                setValues(BufferStringSet&);
    bool                getCompositeValue(BufferString&) const;
    void                fillDefStr(BufferString&) const;

    Param&              operator[]( int idx )           { return *params_[idx];}
    const Param&        operator[]( int idx ) const     { return *params_[idx];}

    void                setSize(int);
    int                 size() const                    { return sz_; }
    int                 isEmpty() const                 { return sz_==0; }
    const char*         getPrefix() const               { return prefix_.buf();}

protected:
    int                         getSize() const;
    bool                        isEqual(const Param&) const;

    int                         sz_;

    const BufferString          prefix_;
    PT                          templ_;
    ObjectSet<PT>               params_;

    BufferString                errmsg_;

};


#define mDescGetParamGroup(PT,ret,desc,key) \
ParamGroup<PT>* ret; \
{ \
    Param* param = desc.getParam( key ); \
    mDynamicCastGet(ParamGroup<PT>*,tmp,param) \
    ret = tmp; \
}

#define mDescGetConstParamGroup(PT,ret,desc,key) \
const ParamGroup<PT>* ret; \
{\
    const Param* param = desc.getParam( key ); \
    mDynamicCastGet(const ParamGroup<PT>*,tmp,param)\
    ret = tmp; \
}


/*
template <class PT>
inline const ParamGroup<PT>* getParamGroup( const Desc& desc, const char* key )
{
    return getParamGroup( const_cast<Desc&>( desc ), key );
}
*/

template <class PT> inline
bool ParamGroup<PT>::isEqual(const Param& b) const
{
    mDynamicCastGet(ParamGroup<PT>*,pgr,&const_cast<Param&>(b));
    if ( !pgr || pgr->size() != sz_ )
        return false;
    if ( prefix_ != pgr->getPrefix() )
        return false;

    for ( int idx=0; idx<sz_; idx++ )
    {
        if ( params_[idx]->getSpec()->nElems()
                != pgr->params_[idx]->getSpec()->nElems() )
            return false;

        for ( int idy=0;
                idy<params_[idx]->getSpec()->nElems(); idy++ )
        {
            const BufferString txt( params_[idx]->getSpec()->text(idx) );
            if ( txt != pgr->params_[idx]->getSpec()->text(idx) )
                return false;
        }
    }
    return true;
}


template <class PT> inline
bool ParamGroup<PT>::isOK() const
{
    if ( !enabled_ ) return true;
    if ( !sz_ ) return false;

    for ( int idx=0; idx<sz_; idx++ )
    {
        if ( !params_[idx]->isOK() )
        {
            BufferString& err = const_cast<ParamGroup*>(this)-> errmsg_;
            err = "cannot parse parameter "; err += idx;
            err += " of the group "; err += prefix_;
            return false;
        }
    }

    return true;
}


template <class PT> inline
bool ParamGroup<PT>::setValues( BufferStringSet& vals )
{
    setSize( vals.size() );
    for ( int idx=0; idx<sz_; idx++ )
    {
        if ( !params_[idx]->setCompositeValue(vals.get(idx) ) )
            return false;
    }

    return isOK();
}


template <class PT> inline
ParamGroup<PT>* ParamGroup<PT>::clone() const
{
    return new ParamGroup<PT>(*this);
}


template <class PT> inline
const char* ParamGroup<PT>::errMsg() const
{ return errmsg_.str(); }


template <class PT> inline
ParamGroup<PT>::ParamGroup( int startsz, const char* prefix, const PT& templ )
    : Param( prefix )
    , templ_( templ )
    , prefix_( prefix )
{
    isgroup_ = true;
    setSize( startsz );
}


template <class PT> inline
ParamGroup<PT>::ParamGroup( const ParamGroup<PT>& a )
    : Param( a )
    , prefix_( a.prefix_ )
    , templ_( a.templ_ )
    , sz_( a.sz_ )
{
    for ( int idx=0; idx<a.params_.size(); idx++ )
    {
        PT* np = new PT( (PT&)a[idx] );
        np->setKey( BufferString(prefix_,idx) );
        params_ += np;
    }
}

template <class PT> inline
ParamGroup<PT>::~ParamGroup()
{
    deepErase( params_ );
}


template <class PT> inline
int ParamGroup<PT>::getSize() const
{
    return sz_;
}


template <class PT> inline
void ParamGroup<PT>::setSize( int nsz )
{
    while ( nsz > params_.size() )
    {
        PT* newpara = new PT(templ_);
        newpara->setKey( BufferString(prefix_,params_.size()) );
        params_ += newpara;
    }

    sz_ = nsz;
}

template <class PT> inline
bool ParamGroup<PT>::getCompositeValue( BufferString& res ) const
{
    for ( int idx=0; idx<sz_; idx++ )
    {
        BufferString parstr;
        if ( !params_[idx]->getCompositeValue(parstr) )
            return false;
        res.add( parstr ).add( " " );
    }
    return true;
}


template <class PT> inline
void ParamGroup<PT>::fillDefStr( BufferString& res ) const
{
    for ( int idx=0; idx<sz_; idx++ )
    {
        res.add( params_[idx]->getKey() ).add( "=" );
        BufferString val;
        if ( !params_[idx]->isRequired()
          || !params_[idx]->getCompositeValue(val))
            val = params_[idx]->getDefaultValue();
        res.add( val ).add( " " );
    }
}


#define mAttribSpecSet(sizegiver,sizetaker)                             \
    public:                                                             \
        bool            update()                                        \
                        {                                               \
                            if ( sizegiver == sizetaker.size() )        \
                                return false;                           \
                                                                        \
                            sizetaker.setSize( sizegiver );             \
                                                                        \
                            return true;                                \
                        }


}//namespace

#endif