/* This file is part of Mapnik (c++ mapping toolkit)
 * Copyright (C) 2005 Artem Pavlenko
 *
 * Mapnik 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 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.
 */

//$Id: layer.hpp 39 2005-04-10 20:39:53Z pavlenko $

#ifndef LAYER_HPP
#define LAYER_HPP

#include <vector>
#include "feature.hpp"
#include "ptr.hpp"
#include "datasource.hpp"

namespace mapnik
{
    class Layer
    {
    private:
	Parameters params_;
	std::string name_;
	double minZoom_;
	double maxZoom_;
	bool active_;
	bool selectable_;
	datasource_p ds_;	
	std::vector<std::string>  styles_;
	std::string selection_style_;
	mutable std::vector<ref_ptr<Feature> > selection_;
	
    public:
	explicit Layer(const Parameters& params);
	Layer(Layer const& l);
	Layer& operator=(Layer const& l);
	bool operator==(Layer const& other) const;
	Parameters const& params() const;	
	const std::string& name() const;
	void add_style(std::string const& stylename);
	std::vector<std::string> const& styles() const;
	void selection_style(const std::string& name);
	const std::string& selection_style() const;
	void setMinZoom(double minZoom);
	void setMaxZoom(double maxZoom);
	double getMinZoom() const;
	double getMaxZoom() const;
	void setActive(bool active);
	bool isActive() const;
	void setSelectable(bool selectable);
	bool isSelectable() const;
	bool isVisible(double scale) const;
	void add_to_selection(ref_ptr<Feature>& feature) const;
	std::vector<ref_ptr<Feature> >& selection() const;
	void clear_selection() const;
	datasource_p const& datasource() const;
	Envelope<double> const& envelope() const;
	virtual ~Layer();
    private:
	void swap(const Layer& other);
    };
}
#endif                                            //LAYER_HPP