ConfigurationVisitor.hxx

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/*
 * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef __CONFIGURATIONVISITOR__
#define __CONFIGURATIONVISITOR__

namespace CLAM{
        class ConfigurationVisitor {
        public:
                virtual ~ConfigurationVisitor() {}
                virtual void VisitConfig()=0;
        };

        template <typename Configuration, typename Builder>
        class ConfigurationGetter : public ConfigurationVisitor {
        public:
                ConfigurationGetter(Configuration * config, Builder* builder) {
                        mBuilder = builder;
                        mConfig = config;
                }

                virtual ~ConfigurationGetter() {}
                
                template <typename T>
                void Accept(const char *name, T &value) { 
                        mBuilder->AddWidget(name, &value, value); 
                }

                virtual void VisitConfig() {
                        mConfig->VisitAll(*this);
                }

        private:
                Builder * mBuilder;
                Configuration * mConfig;
                
        };
        template <typename Configuration, typename Builder>
        class ConfigurationSetter : public ConfigurationVisitor {
        public:
                ConfigurationSetter(Configuration * config, Builder* builder) {
                        mBuilder = builder;
                        mConfig = config;
                }

                virtual ~ConfigurationSetter() {}
                
                template <typename T>
                void Accept(const char *name, T &value) { 
                        mBuilder->RetrieveValue(name, &value, value); 
                }

                virtual void VisitConfig() {
                        mConfig->VisitAll(*this);
                }

        private:
                Builder * mBuilder;
                Configuration * mConfig;
                
        };

}
#endif//__CONFIGURATIONVISITOR__