filters.h

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/*
 Copyright (C) 2001-2006, William Joseph.
 All Rights Reserved.

 This file is part of GtkRadiant.

 GtkRadiant 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.

 GtkRadiant 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 GtkRadiant; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#if !defined(INCLUDED_FILTERS_H)
#define INCLUDED_FILTERS_H

#include "ifilter.h"

#include "generic/callback.h"
#include "scenelib.h"

class Entity;

class EntityFilter
{
    public:
        virtual ~EntityFilter ()
        {
        }
        virtual bool filter (const Entity& entity) const = 0;
};

bool entity_filtered (Entity& entity);
void add_entity_filter (EntityFilter& filter, int mask, bool invert = false);

class ClassnameFilter: public Filterable
{
        scene::Node& m_node;
    public:
        Entity& m_entity;

        ClassnameFilter (Entity& entity, scene::Node& node) :
            m_node(node), m_entity(entity)
        {
        }
        ~ClassnameFilter ()
        {
        }

        void instanceAttach ()
        {
            GlobalFilterSystem().registerFilterable(*this);
        }
        void instanceDetach ()
        {
            GlobalFilterSystem().unregisterFilterable(*this);
        }

        void updateFiltered ()
        {
            if (entity_filtered(m_entity)) {
                m_node.enable(scene::Node::eFiltered);
            } else {
                m_node.disable(scene::Node::eFiltered);
            }
        }

        void classnameChanged (const std::string& value)
        {
            updateFiltered();
        }
        typedef MemberCaller1<ClassnameFilter, const std::string&, &ClassnameFilter::classnameChanged> ClassnameChangedCaller;
};

#endif