/*
 * UltraStar Deluxe - Karaoke Game
 *
 * UltraStar Deluxe is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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; see the file COPYING. If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include <cstddef>

#include "container.hpp"
#include "frame.hpp"
#include "modelview_matrix_cache.hpp"

namespace usdx
{
	log4cpp::Category&  Container::log =
		log4cpp::Category::getInstance("usdx.menu.container");

	Container::Container(Container* owner)
		: DrawableControl(owner), frame(NULL), window_coords(0, 0)
	{
		init(owner);
	}

	Container::Container(Container* owner, const ContainerHelper& add)
		: DrawableControl(owner, add), frame(NULL), window_coords(0, 0)
	{
		init(owner);
	}

	Container::~Container()
	{
		window_coords_connection.disconnect();

		for (std::list<DrawableControl*>::iterator next = controls.begin(), it = next++;
			 it != controls.end(); it = next++) {
			(*it)->remove_parent();
		}

		controls.clear();
	}

	void Container::init(Container* parent)
	{
		set_clipping_required(true);

		if (parent) {
			window_coords_connection = parent->window_coords_change.connect(
				boost::bind(&Container::recalculate_window_coords, this));
		}
	}

	void Container::draw(void)
	{
		DrawableControl::draw();

		if (frame) {
			frame->repaint();
		}

		ModelviewMatrixCache c;
		for (std::list<DrawableControl*>::iterator it =
			     controls.begin(); it != controls.end(); it++) {
			(*it)->repaint();
			c.restore();
		}
	}

	void Container::add(DrawableControl *child)
	{
		controls.push_back(child);
	}

	void Container::remove(DrawableControl *child)
	{
		controls.remove(child);
	}

	void Container::setFrame(Frame *f)
	{
		f->set_size(get_size());
		frame = f;
	}

	void Container::removeFrame(void)
	{
		frame = NULL;
	}

	const Point<int>& Container::get_window_coords(void) const
	{
		return window_coords;
	}

	void Container::recalculate_window_coords(void)
	{
		if (parent) {
			window_coords.set_x(parent->get_window_coords().get_x() +
								get_left());

			window_coords.set_y(parent->get_window_coords().get_y() +
								get_parent()->get_height() -
								(get_top() + get_height()));

			window_coords_change();
		}
	}

	void Container::set_position(const Point<int>& position)
	{
		DrawableControl::set_position(position);
		recalculate_window_coords();
	}

	void Container::set_position(int left, int top)
	{
		DrawableControl::set_position(left, top);
		recalculate_window_coords();
	}

	void Container::set_size(const Dimension<int>& size)
	{
		DrawableControl::set_size(size);
		recalculate_window_coords();
	}

	void Container::set_size(int width, int height)
	{
		DrawableControl::set_size(width, height);
		recalculate_window_coords();
	}

	DrawableControl* Container::get_component_at(const Point<int>& p)
	{
		if (!get_absolut_rect().is_in(p))
			return NULL;

		for (std::list<DrawableControl*>::iterator next = controls.begin(), it = next++;
			 it != controls.end(); it = next++) {

			DrawableControl* c = (*it)->get_component_at(p);
			if (c != NULL) {
				return c;
			}
		}

		if (frame) {
			return frame->get_component_at(p);
		}

		return this;
	}
};