PropertyBag.hpp

/***************************************************************************
  tag: Peter Soetens  Mon Jan 19 14:11:20 CET 2004  PropertyBag.hpp

                        PropertyBag.hpp -  description
                           -------------------
    begin                : Mon January 19 2004
    copyright            : (C) 2004 Peter Soetens
    email                : peter.soetens@mech.kuleuven.ac.be

 ***************************************************************************
 *   This library 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;                 *
 *   version 2 of the License.                                             *
 *                                                                         *
 *   As a special exception, you may use this file as part of a free       *
 *   software library without restriction.  Specifically, if other files   *
 *   instantiate templates or use macros or inline functions from this     *
 *   file, or you compile this file and link it with other files to        *
 *   produce an executable, this file does not by itself cause the         *
 *   resulting executable to be covered by the GNU General Public          *
 *   License.  This exception does not however invalidate any other        *
 *   reasons why the executable file might be covered by the GNU General   *
 *   Public License.                                                       *
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 *   Foundation, Inc., 59 Temple Place,                                    *
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 ***************************************************************************/

#ifndef PI_PROPERTY_BAG
#define PI_PROPERTY_BAG

#include "base/PropertyBase.hpp"

#include <vector>
#include <algorithm>

#ifdef ORO_PRAGMA_INTERFACE
#pragma interface
#endif

namespace RTT
{

    class RTT_API PropertyBag
    {
    public:
        typedef std::vector<base::PropertyBase*> Properties;
        typedef Properties PropertyContainerType;
        typedef Properties::iterator iterator;
        typedef Properties::const_iterator const_iterator;

        typedef std::vector<std::string> Names;
        PropertyBag();

        PropertyBag( const std::string& _type);

        PropertyBag( const PropertyBag& orig);

        ~PropertyBag();

        void add(base::PropertyBase *p);

        void remove(base::PropertyBase *p);

        template<class T>
        Property<T>& addProperty( const std::string& name, T& attr) {
            typename internal::AssignableDataSource<T>::shared_ptr datasource( new internal::ReferenceDataSource<T>(attr) );
            Property<T>* p = new Property<T>(name,"", datasource);
            this->ownProperty( p );
            return *p;
        }


        bool addProperty(base::PropertyBase& p);

        bool removeProperty(base::PropertyBase *p);

        bool ownProperty(base::PropertyBase* p);

        bool ownsProperty(base::PropertyBase* p) const;

        void clear();

        void list(Names &names) const;

        Names list() const;

        bool empty() const
        {
            return mproperties.empty();
        }

        base::PropertyBase* getProperty(const std::string& name) const;

        template<class T>
        Property<T>* getPropertyType(const std::string& name) const
        {
            const_iterator i( std::find_if(mproperties.begin(), mproperties.end(), std::bind2nd(FindPropType<T>(), name ) ) );
            if ( i != mproperties.end() )
                return dynamic_cast<Property<T>* >(*i);
            return 0;
        }

        base::PropertyBase* getItem( int i) const
        {
            if ( i < 0 || i >= int(mproperties.size()) )
                return 0;
            return mproperties[i];
        }

        size_t size() const { return mproperties.size(); }

        void identify( base::PropertyIntrospection* pi ) const;

        void identify( base::PropertyBagVisitor* pi ) const;

        base::PropertyBase* find(const std::string& name) const;

        template<class T>
        base::PropertyBase* findValue(const T& value) const {
            for ( const_iterator i = mproperties.begin();
                  i != mproperties.end();
                  i++ )
                {
                    Property<T> p = *i;
                    if (p.ready() && (p.value() == value))
                        return *i;
                }
            return 0;
        }

        PropertyBag& operator=(const PropertyBag& orig);

        PropertyBag& operator<<=(const PropertyBag& source);

        PropertyBag& operator<<( base::PropertyBase* item) { this->add(item); return *this; }

        const std::string& getType() const { return type;}

        void setType(const std::string& newtype) { type = newtype; }

        Properties& getProperties() { return mproperties; }

        const Properties& getProperties() const { return mproperties; }

        Properties getProperties(const std::string& name) const;

        Names getPropertyNames() const { return list(); }

        iterator begin() { return mproperties.begin(); }
        const_iterator begin() const { return mproperties.begin(); }
        iterator end() { return mproperties.end(); }
        const_iterator end() const { return mproperties.end(); }
    protected:
        Properties mproperties;
        Properties mowned_props;

        template<class T>
        struct FindPropType : public std::binary_function<const base::PropertyBase*,const std::string, bool>
        {
            bool operator()(const base::PropertyBase* b1, const std::string& b2) const { return b1->getName() == b2 && dynamic_cast<const Property<T>* >(b1) != 0; }
        };

        std::string type;
    };

    RTT_API std::ostream& operator<<(std::ostream& os, const PropertyBag& bag);

    RTT_API std::istream& operator>>(std::istream& is, PropertyBag& bag);

    RTT_API base::PropertyBase* findProperty(const PropertyBag& bag, const std::string& path, const std::string& separator = std::string(".") );

    RTT_API std::vector<std::string> listProperties( const PropertyBag& bag, const std::string& separator = std::string("."));

    RTT_API std::vector<std::string> listPropertyDescriptions( const PropertyBag& bag, const std::string& separator = std::string("."));

    RTT_API bool storeProperty(PropertyBag& bag, const std::string& path, base::PropertyBase* item, const std::string& separator = std::string(".") );

    RTT_API bool removeProperty(PropertyBag& bag, const std::string& path, const std::string& separator = std::string(".") );

    RTT_API bool refreshProperties(const PropertyBag& target, const PropertyBag& source, bool strict=false);

    RTT_API bool refreshProperty(const PropertyBag& target, const base::PropertyBase& source);

    RTT_API bool copyProperties(PropertyBag& target, const PropertyBag& source);

    RTT_API bool updateProperties(PropertyBag& target, const PropertyBag& source);

    RTT_API bool updateProperty(PropertyBag& target, const PropertyBag& source, const std::string& path, const std::string& separator = ".");

    RTT_API bool refreshProperty(PropertyBag& target, const PropertyBag& source, const std::string& path, const std::string& separator = ".");

    RTT_API void deleteProperties(PropertyBag& target);

    RTT_API void deletePropertyBag(PropertyBag& target);

    RTT_API void flattenPropertyBag(PropertyBag& target, const std::string& separator=".");

} // Namespace RTT
#endif