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Mini Shell
Mini Shell
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* dialog.h -- common declarations for all dialog modules
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*/
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#ifdef __sun__
#define CURS_MACROS
#endif
#include <ncurses.h>
/*
* Colors in ncurses 1.9.9e do not work properly since foreground and
* background colors are OR'd rather than separately masked. This version
* of dialog was hacked to work with ncurses 1.9.9e, making it incompatible
* with standard curses. The simplest fix (to make this work with standard
* curses) uses the wbkgdset() function, not used in the original hack.
* Turn it off if we're building with 1.9.9e, since it just confuses things.
*/
#if defined(NCURSES_VERSION) && defined(_NEED_WRAP) && !defined(GCC_PRINTFLIKE)
#define OLD_NCURSES 1
#undef wbkgdset
#define wbkgdset(w,p) /*nothing */
#else
#define OLD_NCURSES 0
#endif
#define TR(params) _tracef params
#define KEY_ESC 27
#define TAB 9
#define MAX_LEN 2048
#define BUF_SIZE (10*1024)
#define MIN(x,y) (x < y ? x : y)
#define MAX(x,y) (x > y ? x : y)
#ifndef ACS_ULCORNER
#define ACS_ULCORNER '+'
#endif
#ifndef ACS_LLCORNER
#define ACS_LLCORNER '+'
#endif
#ifndef ACS_URCORNER
#define ACS_URCORNER '+'
#endif
#ifndef ACS_LRCORNER
#define ACS_LRCORNER '+'
#endif
#ifndef ACS_HLINE
#define ACS_HLINE '-'
#endif
#ifndef ACS_VLINE
#define ACS_VLINE '|'
#endif
#ifndef ACS_LTEE
#define ACS_LTEE '+'
#endif
#ifndef ACS_RTEE
#define ACS_RTEE '+'
#endif
#ifndef ACS_UARROW
#define ACS_UARROW '^'
#endif
#ifndef ACS_DARROW
#define ACS_DARROW 'v'
#endif
/* error return codes */
#define ERRDISPLAYTOOSMALL (KEY_MAX + 1)
/*
* Color definitions
*/
struct dialog_color {
chtype atr; /* Color attribute */
int fg; /* foreground */
int bg; /* background */
int hl; /* highlight this item */
};
struct subtitle_list {
struct subtitle_list *next;
const char *text;
};
struct dialog_info {
const char *backtitle;
struct subtitle_list *subtitles;
struct dialog_color screen;
struct dialog_color shadow;
struct dialog_color dialog;
struct dialog_color title;
struct dialog_color border;
struct dialog_color button_active;
struct dialog_color button_inactive;
struct dialog_color button_key_active;
struct dialog_color button_key_inactive;
struct dialog_color button_label_active;
struct dialog_color button_label_inactive;
struct dialog_color inputbox;
struct dialog_color inputbox_border;
struct dialog_color searchbox;
struct dialog_color searchbox_title;
struct dialog_color searchbox_border;
struct dialog_color position_indicator;
struct dialog_color menubox;
struct dialog_color menubox_border;
struct dialog_color item;
struct dialog_color item_selected;
struct dialog_color tag;
struct dialog_color tag_selected;
struct dialog_color tag_key;
struct dialog_color tag_key_selected;
struct dialog_color check;
struct dialog_color check_selected;
struct dialog_color uarrow;
struct dialog_color darrow;
};
/*
* Global variables
*/
extern struct dialog_info dlg;
extern char dialog_input_result[];
extern int saved_x, saved_y; /* Needed in signal handler in mconf.c */
/*
* Function prototypes
*/
/* item list as used by checklist and menubox */
void item_reset(void);
void item_make(const char *fmt, ...);
void item_add_str(const char *fmt, ...);
void item_set_tag(char tag);
void item_set_data(void *p);
void item_set_selected(int val);
int item_activate_selected(void);
void *item_data(void);
char item_tag(void);
/* item list manipulation for lxdialog use */
#define MAXITEMSTR 200
struct dialog_item {
char str[MAXITEMSTR]; /* prompt displayed */
char tag;
void *data; /* pointer to menu item - used by menubox+checklist */
int selected; /* Set to 1 by dialog_*() function if selected. */
};
/* list of lialog_items */
struct dialog_list {
struct dialog_item node;
struct dialog_list *next;
};
extern struct dialog_list *item_cur;
extern struct dialog_list item_nil;
extern struct dialog_list *item_head;
int item_count(void);
void item_set(int n);
int item_n(void);
const char *item_str(void);
int item_is_selected(void);
int item_is_tag(char tag);
#define item_foreach() \
for (item_cur = item_head ? item_head: item_cur; \
item_cur && (item_cur != &item_nil); item_cur = item_cur->next)
/* generic key handlers */
int on_key_esc(WINDOW *win);
int on_key_resize(void);
/* minimum (re)size values */
#define CHECKLIST_HEIGTH_MIN 6 /* For dialog_checklist() */
#define CHECKLIST_WIDTH_MIN 6
#define INPUTBOX_HEIGTH_MIN 2 /* For dialog_inputbox() */
#define INPUTBOX_WIDTH_MIN 2
#define MENUBOX_HEIGTH_MIN 15 /* For dialog_menu() */
#define MENUBOX_WIDTH_MIN 65
#define TEXTBOX_HEIGTH_MIN 8 /* For dialog_textbox() */
#define TEXTBOX_WIDTH_MIN 8
#define YESNO_HEIGTH_MIN 4 /* For dialog_yesno() */
#define YESNO_WIDTH_MIN 4
#define WINDOW_HEIGTH_MIN 19 /* For init_dialog() */
#define WINDOW_WIDTH_MIN 80
int init_dialog(const char *backtitle);
void set_dialog_backtitle(const char *backtitle);
void set_dialog_subtitles(struct subtitle_list *subtitles);
void end_dialog(int x, int y);
void attr_clear(WINDOW * win, int height, int width, chtype attr);
void dialog_clear(void);
void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x);
void print_button(WINDOW * win, const char *label, int y, int x, int selected);
void print_title(WINDOW *dialog, const char *title, int width);
void draw_box(WINDOW * win, int y, int x, int height, int width, chtype box,
chtype border);
void draw_shadow(WINDOW * win, int y, int x, int height, int width);
int first_alpha(const char *string, const char *exempt);
int dialog_yesno(const char *title, const char *prompt, int height, int width);
int dialog_msgbox(const char *title, const char *prompt, int height,
int width, int pause);
typedef void (*update_text_fn)(char *buf, size_t start, size_t end, void
*_data);
int dialog_textbox(const char *title, char *tbuf, int initial_height,
int initial_width, int *keys, int *_vscroll, int *_hscroll,
update_text_fn update_text, void *data);
int dialog_menu(const char *title, const char *prompt,
const void *selected, int *s_scroll);
int dialog_checklist(const char *title, const char *prompt, int height,
int width, int list_height);
int dialog_inputbox(const char *title, const char *prompt, int height,
int width, const char *init);
/*
* This is the base for fictitious keys, which activate
* the buttons.
*
* Mouse-generated keys are the following:
* -- the first 32 are used as numbers, in addition to '0'-'9'
* -- the lowercase are used to signal mouse-enter events (M_EVENT + 'o')
* -- uppercase chars are used to invoke the button (M_EVENT + 'O')
*/
#define M_EVENT (KEY_MAX+1)
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