/*
   ui/menu.cc
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#include "filesystem/filesystem.h"
#include "ui/label.h"
#include "ui/button.h"
#include "ui/menu.h"
#include "ui/ui.h"

namespace ui {

Menu::Menu(Window *parent, const char *label) : Window(parent)
{
	set_label(label);
	set_border(false);

	menu_element_width = 256.0f;
	menu_element_height = 48.0f;
	menu_element_margin = 24.0f;

	menu_background = new Bitmap(this);
	menu_container = new Window(this);
	menu_container->set_border(true);
	menu_container->set_background(true);

	menu_container->set_label("container");
}

Menu::~Menu()
{
	// menu_container and menu_background are deleted by Widget::~Widget()
}

void Menu::load()
{
	std::string filename("menus/");
	filename.append(label());

	filesystem::IniFile ini;

	ini.open(filename);

	if (!ini.is_open()) {
		con_error << "Could not open " << ini.name() << std::endl;
		return;
	}

	std::string strval;
	Button *button = 0;
	Label *label = 0;
	
	while (ini.getline()) {
		if (ini.got_section()) {

			//con_debug << "  " << ini.name() << " [" << ini.section() << "]" << std::endl;

			if (ini.got_section("menu")) {
			
			} else if (ini.got_section("button")) {
				button = add_button();
	
			} else if (ini.got_section("label")) {
				label = add_label();
	
			} else if (ini.got_section()) {
				ini.unknown_section();
			}

		} else if (ini.got_key()) {

			//con_debug << "  " << ini.name() << " " << ini.key() << "=" << ini.value() << std::endl;

			if (ini.in_section("menu")) {
				if (ini.got_key_string("background", strval)) {
					set_background(strval.c_str());
				} else if (ini.got_key_float("elementwidth", menu_element_width)) {
					continue;
				} else if (ini.got_key_float("elementheight", menu_element_height)) {
					continue;
				} else if (ini.got_key_float("elementmargin", menu_element_margin)) {
					continue;
				} else {
					ini.unkown_key();
				}
			} else if (ini.in_section("button")) {
				if (ini.got_key_string("text", strval)) {
					button->set_text(strval);

				} else if (ini.got_key_string("command", strval)) {
					button->set_command(strval);

				} else if (ini.got_key_string("align", strval)) {
					aux::to_label(strval);
					if (strval.compare("left") == 0) {
						button->set_alignment(AlignLeft | AlignVCenter);
					} else if (strval.compare("center") == 0) {
						button->set_alignment(AlignCenter);
					} else if (strval.compare("right") == 0) {
 						button->set_alignment(AlignRight | AlignVCenter);
					} else {
						ini.unknown_value();
					}
				} else {
					ini.unkown_key();
				}
			} else if (ini.in_section("label")) {
				if (ini.got_key_string("text", strval)) {
					label->set_text(strval);
				} else if (ini.got_key_string("align", strval)) {
					aux::to_label(strval);
					if (strval.compare("left") == 0) {
						label->set_alignment(AlignLeft | AlignHCenter);
					} else if (strval.compare("center") == 0) {
						label->set_alignment(AlignCenter);
					} else if (strval.compare("right") == 0) {
						label->set_alignment(AlignRight | AlignHCenter);
					} else {
						ini.unknown_value();
					}
				} else {
					ini.unkown_key();
				}
			}

		}
	}

	con_debug << "  " << ini.name() << " " << children().size() << " widgets" << std::endl;
	ini.close();
}

void Menu::set_background(const char *texture)
{
	menu_background->set_texture(texture);
}

Label *Menu::add_label(char const * text)
{
	Label *label = new Label(menu_container, text);
	label->set_alignment(AlignCenter);
	label->set_border(false);
	label->set_font(ui::root()->font_large());
	return label;
}

Button *Menu::add_button(char const *text, char const *command)
{
	return new Button(menu_container, text, command);
}

void Menu::resize()
{
	size().assign(parent()->size());
	menu_background->size().assign(size());

	float n = (float) menu_container->children().size();
	menu_container->set_size(1.5f * menu_element_width, n * (menu_element_height + menu_element_margin) + menu_element_height);
	menu_container->set_location(menu_element_width * 0.25, (height() - menu_container->height()) / 2.0f);
	
	// reposition all children within the container
	size_t i = 0;
	for (Children::iterator it = menu_container->children().begin(); it != menu_container->children().end(); it++) {
		Widget *w = (*it);
		w->set_size(menu_element_width, menu_element_height);
		w->set_location(menu_element_width * 0.25f, menu_element_height * 0.5f + i * (menu_element_height + menu_element_margin));
		i++;
	}
}

}