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/* utalk, a UDP-based "talk" replacement, using srdp
Copyright (C) 1995 Roger Espel Llima
menu.h
Started: 1 Dec 96 by <roger.espel.llima@pobox.com>
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. See the file LICENSE for details.
*/
#ifndef MENU_H
#define MENU_H
#define MENU_TEXT 1 /* print text & wait for Enter */
#define MENU_CHOOSE 2 /* print text & list, pick one */
#define MENU_ENTRY 3 /* print text, input line */
#define HELPFILE LIBDIR "/utalk.help"
struct menu;
typedef void (*menu_callback)(struct menu *);
typedef void (*text_callback)(char *);
struct menu {
int type;
menu_callback callback; /* gets called when done w/ the menu; is
supposed to free the menu storage if it
was malloced */
int preempted; /* set to 1 for the callback to see, if preempted */
char **text; /* text to show, terminated by a null line pointer,
for types MENU_TEXT, MENU_CHOOSE, MENU_YESNO;
for MENU_CHOOSE, the strings must be writable
and be of the form " letter -- text " */
int *jumplines; /* line numbers to jump to with jump keys (or NULL)*/
char *jumpkeys; /* jump keys (or NULL) */
char *entrytxt; /* text to show (one line), for MENU_ENTRY */
char entry[256]; /* gets filled; can be initialized with a prompt;
set promptlen to the len of the prompt and it
won't be erased */
text_callback txtcallback; /* gets called when done entering text,
with the text w/o the prompt, by the
default text-mode callback; -1 means
no selection */
int promptlen;
int arrowat; /* line with the arrow, for selection menus;
must be initialized, and read by the callback
when done */
int arrowmin, arrowmax; /* must be initialized too... */
/* the rest is for internal use only */
char *buf; /* where to copy the entered string, used by the
default text-mode callback */
int len; /* length of the entry, including prompt */
int showfrom; /* show starting from line n (start at 0) */
int showfromcol; /* show starting from col n (start at 0) */
int nlines, maxcols; /* size of text to show */
int wlines; /* text lines in menu window */
int wcols; /* text cols in menu window */
int more; /* if we're now showing the bottom */
/* xxx ... */
};
extern struct menu *the_menu;
extern int menu_top, menu_bottom, menu_left, menu_right; /* valid only if
the_menu != NULL */
extern void m_putscreen(char *s, int n, char attr);
extern void m_cleareol(void);
extern void m_gotoxy(int x, int y);
extern void m_scrollup(int y1, int y2);
extern void m_scrolldown(int y1, int y2);
extern void m_backspace(void);
extern void menu_keyboard(unsigned char c);
extern void make_text_menu(char **s, int *jumplines, char *jumpkeys, int freeit);
extern void input_text(char *text, char *prompt, char *buf, text_callback c);
extern void redraw_menu(void);
extern void do_help(void);
extern void entertopic(void);
extern void popup_command(char *prompt);
#endif
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