/*
 * This file is part of the DXX-Rebirth project <http://www.dxx-rebirth.com/>.
 * It is copyright by its individual contributors, as recorded in the
 * project's Git history.  See COPYING.txt at the top level for license
 * terms and a link to the Git history.
 */
/*
 *  A 'window' is simply a canvas that can receive events.
 *  It can be anything from a simple message box to the
 *	game screen when playing.
 *
 *  See event.c for event handling code.
 *
 *	-kreator 2009-05-06
 */

#pragma once

#include "event.h"
#include "gr.h"
#include "console.h"

#ifdef __cplusplus

struct window;

enum class window_event_result
{
	// Window ignored event.  Bubble up.
	ignored,
	// Window handled event.
	handled,
	close,
};

void arch_init(void);

template <typename T>
class window_subfunction_t
{
public:
	typedef window_event_result (*type)(window *menu,const d_event &event, T *userdata);
};

class unused_window_userdata_t;
static const unused_window_userdata_t *const unused_window_userdata = nullptr;

struct embed_window_pointer_t
{
	window *wind;
};

struct ignore_window_pointer_t
{
};

window *window_create(grs_canvas *src, int x, int y, int w, int h, window_subfunction_t<void>::type event_callback, void *userdata, const void *createdata);

static inline void set_embedded_window_pointer(embed_window_pointer_t *wp, window *w)
{
	wp->wind = w;
}

static inline void set_embedded_window_pointer(ignore_window_pointer_t *, window *) {}

template <typename T1, typename T2 = const void>
static inline window *window_create(grs_canvas *src, int x, int y, int w, int h, typename window_subfunction_t<T1>::type event_callback, T1 *data, T2 *createdata = nullptr)
{
	auto win = window_create(src, x, y, w, h, reinterpret_cast<window_subfunction_t<void>::type>(event_callback), static_cast<void *>(data), static_cast<const void *>(createdata));
	set_embedded_window_pointer(data, win);
	return win;
}

template <typename T1, typename T2 = const void>
static inline window *window_create(grs_canvas *src, int x, int y, int w, int h, typename window_subfunction_t<const T1>::type event_callback, const T1 *userdata, T2 *createdata = nullptr)
{
	return window_create(src, x, y, w, h, reinterpret_cast<window_subfunction_t<void>::type>(event_callback), static_cast<void *>(const_cast<T1 *>(userdata)), static_cast<const void *>(createdata));
}

extern int window_close(window *wind);
extern int window_exists(window *wind);
extern window *window_get_front(void);
extern window *window_get_first(void);
window *window_get_next(window &wind);
window *window_get_prev(window &wind);
void window_select(window &wind);
window *window_set_visible(window &wind, int visible);
static inline window *window_set_visible(window *wind, int visible)
{
	return window_set_visible(*wind, visible);
}
int window_is_visible(window &wind);
static inline int window_is_visible(window *wind)
{
	return window_is_visible(*wind);
}
grs_canvas &window_get_canvas(window &wind);
extern void window_update_canvases(void);
window_event_result window_send_event(window &wind,const d_event &event);
void window_set_modal(window &wind, int modal);
static inline void window_set_modal(window *wind, int modal)
{
	window_set_modal(*wind, modal);
}
int window_is_modal(window &wind);

static inline window_event_result WINDOW_SEND_EVENT(window &w, const d_event &event, const char *file, unsigned line, const char *e)
{
	auto &c = window_get_canvas(w);
	con_printf(CON_DEBUG, "%s:%u: sending event %s to window of dimensions %dx%d", file, line, e, c.cv_bitmap.bm_w, c.cv_bitmap.bm_h);
	return window_send_event(w, event);
}

#define WINDOW_SEND_EVENT(w, e)	(event.type = e, (WINDOW_SEND_EVENT)(*w, event, __FILE__, __LINE__, #e))

#endif