/** \file
 * DryOS dialog/window interface.
 */
/*
 * Copyright (C) 2009 Trammell Hudson <hudson+ml@osresearch.net>
 * 
 * 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; if not, write to the
 * Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#ifndef _dryos_dialog_h_
#define _dryos_dialog_h_

#include "arm-mcr.h"
#include "gui.h"

/** Windowing system elements */
struct winsys_struct
{
	void *			vram_instance; // off 0x00
	struct vram_object *	vram_object; // off 0x04
	uint32_t		off_0x08;
	uint32_t		off_0x0c;
	uint32_t		off_0x10;
	uint32_t		off_0x14;
	uint32_t		off_0x18;
	uint32_t		off_0x1c;
	uint32_t		off_0x20;
	struct semaphore *	sem; // off 0x24
	uint32_t		off_0x28;
	uint32_t		off_0x2c;
	uint32_t		flag_0x30;
	uint32_t		flag_0x34;
	uint32_t		off_0x38;
	uint32_t		off_0x3c;
	uint32_t		off_0x40;
	uint32_t		off_0x44; // used for collapsed vram?
	uint32_t		off_0x48;
	uint32_t		off_0x4c;
};

SIZE_CHECK_STRUCT( winsys_struct, 0x50 );

extern struct winsys_struct winsys_struct;


typedef int (*window_callback)( void * );

/** Returned by window_create_maybe() at 0xFFA6BC00 */
struct window
{
	const char *		type; // "Window Instance" at 0x14920
	uint32_t		off_0x04;	// initial=0
	uint32_t		off_0x08;	// initial=0
	uint32_t		off_0x0c;	// initial=0
	uint32_t		x;		// off_0x10;
	uint32_t		y;		// off_0x14;
	uint32_t		width;		// off_0x18; r5
	uint32_t		height;		// off_0x1c; r6
	window_callback		callback;	// off 0x20
	void *			arg;		// off_0x24;
	uint32_t		wx_maybe;	// off_0x28;
	uint32_t		wy_maybe;	// off_0x2c;
};

SIZE_CHECK_STRUCT( window, 0x30 );

extern struct window *
window_create(
	uint32_t		x,
	uint32_t		y,
	uint32_t		w,
	uint32_t		h,
	window_callback		callback,
	void *			arg
);

struct dialog;
struct dialog_list;
struct dialog_item;

/** Returns 0 if it handled the message, 1 if it did not? */
typedef int (*dialog_handler_t)(
	struct dialog *		self,
	void *			arg,
	gui_event_t		event
);


/** These are chock-full of callbacks.  I don't know what most of them do. */
struct dialog_item
{
	const char *		type;			// "DIALOGITEM" at 0xFFCA7B1c
	struct dialog_list *	next;			// maybe parent? 0x04
	struct dialog_list *	prev;			// maybe 0x08
	struct dialog_callbacks * callbacks;		// maybe object? 0x0c
	uint32_t		off_0x10;
	uint32_t		off_0x14;
	uint32_t		off_0x18;
	uint32_t		off_0x1c;
	uint32_t		off_0x20;
	uint32_t		off_0x24;
	uint32_t		off_0x28;
	void			(*move_callback)( struct dialog *, int x, int y ); //		off_0x2c;
	uint32_t		off_0x30;
	uint32_t		off_0x34;
	uint32_t		off_0x38;
	uint32_t		off_0x3c;
};
SIZE_CHECK_STRUCT( dialog_item, 0x40 );


/** Dialog children?  Maybe? */
struct dialog_list
{
	uint16_t		index;			// off 0x00
	uint16_t		off_0x02;
	struct dialog_item *	item;			// off 0x04 maybe
	uint32_t		arg1;			// off 0x08, passed to creat
	uint32_t		arg2;			// off_0x0c, passed to creat
	uint32_t		off_0x10;
	uint32_t		off_0x14;
	uint32_t		off_0x18;
	struct dialog_list *	next;			// off 0x1c
};


/** Dialog box gui elements */
struct dialog
{
	const char *		type;			// "DIALOG" at 0x147F8
	struct window *		window;			// off 0x04
	void *			arg0;			// off 0x08
	struct langcon *	langcon;		// off 0x0c
	struct dispsw_control *	disp_sw_controller;	// off 0x10
	struct publisher *	publisher;		// off 0x14
	uint32_t		off_0x18;
	uint32_t		off_0x1c;
	uint32_t		off_0x20;		// initial=0
	uint32_t		off_0x24;		// initial=0
	uint32_t		off_0x28;		// initial=2
	uint32_t		off_0x2c;		// initial=0
	uint32_t		off_0x30;		// initial=0
	uint32_t		flag_0x34;		// initial=0, set to 1 by
	uint32_t		off_0x38;		// initial=0
	struct task *		gui_task;		// off 0x3c
	uint32_t		off_0x40;		// pointed to by 0x08
	uint32_t		off_0x44;		// initial=0
	uint32_t		off_0x48;
	uint32_t		off_0x4c;
	uint32_t		off_0x50;
	uint32_t		off_0x54;
	uint32_t		off_0x58;
	void *			child_list_maybe;	// off_0x5c;
	dialog_handler_t	handler;		// off 0x60
	uint32_t		handler_arg;		// off_0x64;
	uint32_t		off_0x68;		// initial=0
	uint16_t		off_0x6c;		// initial=0
	uint16_t		off_0x6e;		// initial=0
	uint16_t		off_0x70;
	uint16_t		off_0x72;		// initial=0
	uint32_t		off_0x74;		// initial=1
	uint32_t		off_0x78;		// initial=0
	uint32_t		off_0x7c;		// initial=0
	struct publisher *	publisher_callback;	// off_0x80;
	uint32_t		off_0x84;
	uint32_t		const_40000000_0;	// off_0x88;
	uint32_t		off_0x8c;		// initial=0xA
	uint32_t		off_0x90;		// initial=0xA
	uint32_t		id;			// off_0x94;
	uint32_t		level_maybe;		// off_0x98;
	uint32_t		const_40000000_1;	// off_0x9c;
	uint16_t		off_0xa0;		// initial=0
	uint16_t		off_0xa2;
	uint32_t		off_0xa4;
	uint32_t		off_0xa8;		// initial=0
	uint32_t		off_0xac;		// initial=0
};

SIZE_CHECK_STRUCT( dialog, 0xB0 );


extern struct dialog *
dialog_create(
	int			id,	 // must be unique?
	int			level_maybe,
	dialog_handler_t	handler,
	void *			arg1,
	void *			arg2
);

extern void
dialog_delete(
	struct dialog *		dialog
);

extern void
dialog_draw(
	struct dialog *		dialog
);

extern void
dialog_window_draw(
	struct dialog *		dialog
);

extern void
dialog_window_prepare(
	struct dialog *		dialog,
	void *			unused
);

extern void
dialog_post_event(
	unsigned		event,
	unsigned		arg,
	struct dialog *		dialog
);

extern void
dialog_set_focus(
	struct dialog *		dialog
);


/** type 0 == 720, 1 == 960? */
extern void
dialog_set_origin_type(
	struct dialog *		dialog,
	int			type
);

extern void
dialog_resize(
	struct dialog *		dialog,
	int			w,
	int			h,
	int			unknown
);

extern void
dialog_window_resize(
	struct dialog *		dialog,
	int			w,
	int			h,
	int			unknown
);

extern void
dialog_move(
	struct dialog *		dialog,
	int			x,
	int			y
);

extern void
dialog_move_item(
	struct dialog *		dialog,
	int			x,
	int			y,
	int			index
);

extern void
dialog_label_item(
	struct dialog *		dialog,
	uint32_t		id,
	const char *		label,
	int			len_maybe,
	int			unknown
);


/** Top level dialog handler (gui_task) */
extern void
dialog_handler( void );


#endif