/*
 * Copyright (c) 2009-2016, Albertas Vyšniauskas
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 *     * Neither the name of the software author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef TRANSFORMATION_CHAIN_H_
#define TRANSFORMATION_CHAIN_H_
#include "Transformation.h"
#include <list>
#include <memory>

/** \file source/transformation/Chain.h
 * \brief Struct for transformation object list handling.
 */
namespace transformation {
/** \struct Chain
 * \brief Transformation object chain management struct.
 */
struct Chain {
	using TransformationList = std::list<std::unique_ptr<Transformation>>;
	/**
	* Chain constructor.
	*/
	Chain();
	/**
	* Apply transformation chain to color.
	* @param[in] input Source color in RGB color space.
	* @param[out] output Destination color in RGB color space.
	*/
	void apply(const Color *input, Color *output);
	/**
	* Add transformation object into the list.
	* @param[in] transformation Transformation object.
	*/
	void add(std::unique_ptr<Transformation> transformation);
	/**
	* Remove transformation object from the list.
	* @param[in] transformation Transformation object.
	*/
	void remove(const Transformation *transformation);
	/**
	* Clear transformation object list.
	*/
	void clear();
	/**
	* Enable/disable transformation chain.
	* @param[in] enabled Enabled.
	*/
	void setEnabled(bool enabled);
	/**
	* Get the list of transformation objects.
	* @return Transformation object list.
	*/
	TransformationList &getAll();
private:
	TransformationList m_transformationChain;
	bool m_enabled;
};
}
#endif /* TRANSFORMATION_CHAIN_H_ */
