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                    EDITING_TARGET: menu.h
                

/****************************************************************************
 * Copyright 2020 Thomas E. Dickey                                          *
 * Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *   Author:  Juergen Pfeifer, 1995,1997                                    *
 ****************************************************************************/

/* $Id: menu.h,v 1.26 2020/12/12 00:38:02 tom Exp $ */

#ifndef ETI_MENU
#define ETI_MENU

#ifdef AMIGA
#define TEXT TEXT_ncurses
#endif

#include <curses.h>
#include <eti.h>

#ifdef __cplusplus
extern "C"
{
#endif

#if defined(BUILDING_MENU)
# define MENU_IMPEXP NCURSES_EXPORT_GENERAL_EXPORT
#else
# define MENU_IMPEXP NCURSES_EXPORT_GENERAL_IMPORT
#endif

#define MENU_WRAPPED_VAR(type,name) extern MENU_IMPEXP type NCURSES_PUBLIC_VAR(name)(void)

#define MENU_EXPORT(type) MENU_IMPEXP type NCURSES_API
#define MENU_EXPORT_VAR(type) MENU_IMPEXP type

  typedef int Menu_Options;
  typedef int Item_Options;

/* Menu options: */
#define O_ONEVALUE      (0x01)
#define O_SHOWDESC      (0x02)
#define O_ROWMAJOR      (0x04)
#define O_IGNORECASE    (0x08)
#define O_SHOWMATCH     (0x10)
#define O_NONCYCLIC     (0x20)
#define O_MOUSE_MENU    (0x40)

/* Item options: */
#define O_SELECTABLE    (0x01)

#if !NCURSES_OPAQUE_MENU
  typedef struct
    {
      const char *str;
      unsigned short length;
    }
  TEXT;
#endif				/* !NCURSES_OPAQUE_MENU */

  struct tagMENU;

  typedef struct tagITEM
#if !NCURSES_OPAQUE_MENU
    {
      TEXT name;		/* name of menu item                         */
      TEXT description;		/* description of item, optional in display  */
      struct tagMENU *imenu;	/* Pointer to parent menu                    */
      void *userptr;		/* Pointer to user defined per item data     */
      Item_Options opt;		/* Item options                              */
      short index;		/* Item number if connected to a menu        */
      short y;			/* y and x location of item in menu          */
      short x;
      bool value;		/* Selection value                           */

      struct tagITEM *left;	/* neighbor items                            */
      struct tagITEM *right;
      struct tagITEM *up;
      struct tagITEM *down;

    }
#endif				/* !NCURSES_OPAQUE_MENU */
  ITEM;

  typedef void (*Menu_Hook) (struct tagMENU *);

  typedef struct tagMENU
#if 1				/* not yet: !NCURSES_OPAQUE_MENU   */
    {
      short height;		/* Nr. of chars high               */
      short width;		/* Nr. of chars wide               */
      short rows;		/* Nr. of items high               */
      short cols;		/* Nr. of items wide               */
      short frows;		/* Nr. of formatted items high     */
      short fcols;		/* Nr. of formatted items wide     */
      short arows;		/* Nr. of items high (actual)      */
      short namelen;		/* Max. name length                */
      short desclen;		/* Max. description length         */
      short marklen;		/* Length of mark, if any          */
      short itemlen;		/* Length of one item              */
      short spc_desc;		/* Spacing for descriptor          */
      short spc_cols;		/* Spacing for columns             */
      short spc_rows;		/* Spacing for rows                */
      char *pattern;		/* Buffer to store match chars     */
      short pindex;		/* Index into pattern buffer       */
      WINDOW *win;		/* Window containing menu          */
      WINDOW *sub;		/* Subwindow for menu display      */
      WINDOW *userwin;		/* User's window                   */
      WINDOW *usersub;		/* User's subwindow                */
      ITEM **items;		/* array of items                  */
      short nitems;		/* Nr. of items in menu            */
      ITEM *curitem;		/* Current item                    */
      short toprow;		/* Top row of menu                 */
      chtype fore;		/* Selection attribute             */
      chtype back;		/* Nonselection attribute          */
      chtype grey;		/* Inactive attribute              */
      unsigned char pad;	/* Pad character                   */

      Menu_Hook menuinit;	/* User hooks                      */
      Menu_Hook menuterm;
      Menu_Hook iteminit;
      Menu_Hook itemterm;

      void *userptr;		/* Pointer to menus user data      */
      char *mark;		/* Pointer to marker string        */

      Menu_Options opt;		/* Menu options                    */
      unsigned short status;	/* Internal state of menu          */
    }
#endif				/* !NCURSES_OPAQUE_MENU */
  MENU;

/* Define keys */

#define REQ_LEFT_ITEM           (KEY_MAX + 1)
#define REQ_RIGHT_ITEM          (KEY_MAX + 2)
#define REQ_UP_ITEM             (KEY_MAX + 3)
#define REQ_DOWN_ITEM           (KEY_MAX + 4)
#define REQ_SCR_ULINE           (KEY_MAX + 5)
#define REQ_SCR_DLINE           (KEY_MAX + 6)
#define REQ_SCR_DPAGE           (KEY_MAX + 7)
#define REQ_SCR_UPAGE           (KEY_MAX + 8)
#define REQ_FIRST_ITEM          (KEY_MAX + 9)
#define REQ_LAST_ITEM           (KEY_MAX + 10)
#define REQ_NEXT_ITEM           (KEY_MAX + 11)
#define REQ_PREV_ITEM           (KEY_MAX + 12)
#define REQ_TOGGLE_ITEM         (KEY_MAX + 13)
#define REQ_CLEAR_PATTERN       (KEY_MAX + 14)
#define REQ_BACK_PATTERN        (KEY_MAX + 15)
#define REQ_NEXT_MATCH          (KEY_MAX + 16)
#define REQ_PREV_MATCH          (KEY_MAX + 17)

#define MIN_MENU_COMMAND        (KEY_MAX + 1)
#define MAX_MENU_COMMAND        (KEY_MAX + 17)

/*
 * Some AT&T code expects MAX_COMMAND to be out-of-band not
 * just for menu commands but for forms ones as well.
 */
#if defined(MAX_COMMAND)
#  if (MAX_MENU_COMMAND > MAX_COMMAND)
#    error Something is wrong -- MAX_MENU_COMMAND is greater than MAX_COMMAND
#  elif (MAX_COMMAND != (KEY_MAX + 128))
#    error Something is wrong -- MAX_COMMAND is already inconsistently defined.
#  endif
#else
#  define MAX_COMMAND (KEY_MAX + 128)
#endif

/* --------- prototypes for libmenu functions ----------------------------- */

  extern MENU_EXPORT(ITEM **) menu_items(const MENU *);
  extern MENU_EXPORT(ITEM *) current_item(const MENU *);
  extern MENU_EXPORT(ITEM *) new_item(const char *, const char *);

  extern MENU_EXPORT(MENU *) new_menu(ITEM **);

  extern MENU_EXPORT(Item_Options) item_opts(const ITEM *);
  extern MENU_EXPORT(Menu_Options) menu_opts(const MENU *);

  extern MENU_EXPORT(Menu_Hook) item_init(const MENU *);
  extern MENU_EXPORT(Menu_Hook) item_term(const MENU *);
  extern MENU_EXPORT(Menu_Hook) menu_init(const MENU *);
  extern MENU_EXPORT(Menu_Hook) menu_term(const MENU *);

  extern MENU_EXPORT(WINDOW *) menu_sub(const MENU *);
  extern MENU_EXPORT(WINDOW *) menu_win(const MENU *);

  extern MENU_EXPORT(const char *) item_description(const ITEM *);
  extern MENU_EXPORT(const char *) item_name(const ITEM *);
  extern MENU_EXPORT(const char *) menu_mark(const MENU *);
  extern MENU_EXPORT(const char *) menu_request_name(int);

  extern MENU_EXPORT(char *) menu_pattern(const MENU *);

  extern MENU_EXPORT(void *) menu_userptr(const MENU *);
  extern MENU_EXPORT(void *) item_userptr(const ITEM *);

  extern MENU_EXPORT(chtype) menu_back(const MENU *);
  extern MENU_EXPORT(chtype) menu_fore(const MENU *);
  extern MENU_EXPORT(chtype) menu_grey(const MENU *);

  extern MENU_EXPORT(int) free_item(ITEM *);
  extern MENU_EXPORT(int) free_menu(MENU *);
  extern MENU_EXPORT(int) item_count(const MENU *);
  extern MENU_EXPORT(int) item_index(const ITEM *);
  extern MENU_EXPORT(int) item_opts_off(ITEM *, Item_Options);
  extern MENU_EXPORT(int) item_opts_on(ITEM *, Item_Options);
  extern MENU_EXPORT(int) menu_driver(MENU *, int);
  extern MENU_EXPORT(int) menu_opts_off(MENU *, Menu_Options);
  extern MENU_EXPORT(int) menu_opts_on(MENU *, Menu_Options);
  extern MENU_EXPORT(int) menu_pad(const MENU *);
  extern MENU_EXPORT(int) pos_menu_cursor(const MENU *);
  extern MENU_EXPORT(int) post_menu(MENU *);
  extern MENU_EXPORT(int) scale_menu(const MENU *, int *, int *);
  extern MENU_EXPORT(int) set_current_item(MENU *menu, ITEM *item);
  extern MENU_EXPORT(int) set_item_init(MENU *, Menu_Hook);
  extern MENU_EXPORT(int) set_item_opts(ITEM *, Item_Options);
  extern MENU_EXPORT(int) set_item_term(MENU *, Menu_Hook);
  extern MENU_EXPORT(int) set_item_userptr(ITEM *, void *);
  extern MENU_EXPORT(int) set_item_value(ITEM *, bool);
  extern MENU_EXPORT(int) set_menu_back(MENU *, chtype);
  extern MENU_EXPORT(int) set_menu_fore(MENU *, chtype);
  extern MENU_EXPORT(int) set_menu_format(MENU *, int, int);
  extern MENU_EXPORT(int) set_menu_grey(MENU *, chtype);
  extern MENU_EXPORT(int) set_menu_init(MENU *, Menu_Hook);
  extern MENU_EXPORT(int) set_menu_items(MENU *, ITEM **);
  extern MENU_EXPORT(int) set_menu_mark(MENU *, const char *);
  extern MENU_EXPORT(int) set_menu_opts(MENU *, Menu_Options);
  extern MENU_EXPORT(int) set_menu_pad(MENU *, int);
  extern MENU_EXPORT(int) set_menu_pattern(MENU *, const char *);
  extern MENU_EXPORT(int) set_menu_sub(MENU *, WINDOW *);
  extern MENU_EXPORT(int) set_menu_term(MENU *, Menu_Hook);
  extern MENU_EXPORT(int) set_menu_userptr(MENU *, void *);
  extern MENU_EXPORT(int) set_menu_win(MENU *, WINDOW *);
  extern MENU_EXPORT(int) set_top_row(MENU *, int);
  extern MENU_EXPORT(int) top_row(const MENU *);
  extern MENU_EXPORT(int) unpost_menu(MENU *);
  extern MENU_EXPORT(int) menu_request_by_name(const char *);
  extern MENU_EXPORT(int) set_menu_spacing(MENU *, int, int, int);
  extern MENU_EXPORT(int) menu_spacing(const MENU *, int *, int *, int *);

  extern MENU_EXPORT(bool) item_value(const ITEM *);
  extern MENU_EXPORT(bool) item_visible(const ITEM *);

  extern MENU_EXPORT(void) menu_format(const MENU *, int *, int *);

#if NCURSES_SP_FUNCS
  extern MENU_EXPORT(MENU *) NCURSES_SP_NAME(new_menu) (SCREEN *, ITEM **);
#endif

#ifdef __cplusplus
}
#endif

#endif				/* ETI_MENU */

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