#include "GUI.h"  // for Simple_window only (doesn't really belong in Window.h)

using namespace Graph_lib;

// Simple_window is basic scaffolding for ultra-simple interaction
// with graphics.  It provides one window with one "next" button for
// ultra-simple animation

struct Simple_window : Graph_lib::Window {
   Simple_window(Point xy, int w, int h, const string& title );
   /*
     : Window(xy,w,h,title),
     button_pushed(false),
     next_button(Point(x_max()-70,0), 70, 20, "Next", cb_next) { attach(next_button); }
   */	
   //   void wait_for_button()
   bool wait_for_button();
   // modified event loop
   // handle all events (as per default), but quit when button_pushed becomes true
   // this allows graphics without control inversion
   /*
     {
     while (!button_pushed) Fl::wait();
     button_pushed = false;
     Fl::redraw();
     return true;
     }
   */

   Button next_button;
private:
   bool button_pushed;
	
   static void cb_next(Address, Address addr); // callback for next_button
   //	{ reference_to<Simple_window>(addr).next(); }
   /*
     {
     static_cast<Simple_window*>(addr)->next();
     } 
   */

   void next(); // { button_pushed = true; }

};