#include <SFGUI/SFGUI.hpp>
#include <SFGUI/Widgets.hpp>
#include <SFML/Graphics.hpp>

const int SCREEN_WIDTH = 800;
const int SCREEN_HEIGHT = 600;

class Example {
	public:
		void OnButtonClick();
		void OnWindow2Close();

		void Run();

	private:
		sfg::SFGUI m_sfgui;
		sfg::Window::Ptr window2;
};

void Example::OnButtonClick()
{
	window2->Show( true );
}

void Example::OnWindow2Close()
{
	window2->Show( false );
}

void Example::Run() {
	sf::RenderWindow render_window( sf::VideoMode( 800, 600 ), "SFML" );
	auto button = sfg::Button::Create( "Open Window" );
	button->GetSignal( sfg::Widget::OnLeftClick ).Connect( std::bind( &Example::OnButtonClick, this ) );

	auto box = sfg::Box::Create( sfg::Box::Orientation::VERTICAL, 5.0f );
	box->Pack( button, false );

	auto window = sfg::Window::Create();
	window->Add( box );

	window2 = sfg::Window::Create();
	window2->SetTitle( "Close me" );
	window2->SetStyle( window2->GetStyle() | sfg::Window::CLOSE );
	window2->GetSignal( sfg::Window::OnCloseButton ).Connect( std::bind( &Example::OnWindow2Close, this ) );
	window2->SetRequisition( sf::Vector2f( 200, 200 ) );
	window2->SetPosition( sf::Vector2f( 200, 200 ) );
	window2->Show( false );

	// Create a desktop and add the window to it.
	sfg::Desktop desktop;
	desktop.Add( window );
	desktop.Add( window2 );

	// We're not using SFML to render anything in this program, so reset OpenGL
	// states. Otherwise we wouldn't see anything.
	render_window.resetGLStates();

	// Main loop!
	sf::Event event;
	sf::Clock clock;

	while( render_window.isOpen() ) {
		// Event processing.
		while( render_window.pollEvent( event ) ) {
			desktop.HandleEvent( event );

			// If window is about to be closed, leave program.
			if( event.type == sf::Event::Closed ) {
				render_window.close();
			}
		}

		// Update SFGUI with elapsed seconds since last call.
		desktop.Update( clock.restart().asSeconds() );

		// Rendering.
		render_window.clear();
		m_sfgui.Display( render_window );
		render_window.display();
	}
}

int main() {
	Example example;
	example.Run();

	return 0;
}