scripts/config/lxdialog/dialog.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *  dialog.h -- common declarations for all dialog modules
   4  *
   5  *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
   6  */
   7
   8 #include <sys/types.h>
   9 #include <fcntl.h>
  10 #include <unistd.h>
  11 #include <ctype.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <stdbool.h>
  15
  16 #ifdef __sun__
  17 #define CURS_MACROS
  18 #endif
  19 #include <ncurses.h>
  20
  21 #define TR(params) _tracef params
  22
  23 #define KEY_ESC 27
  24 #define TAB 9
  25 #define MAX_LEN 2048
  26 #define BUF_SIZE (10*1024)
  27 #define MIN(x,y) (x < y ? x : y)
  28 #define MAX(x,y) (x > y ? x : y)
  29
  30 #ifndef ACS_ULCORNER
  31 #define ACS_ULCORNER '+'
  32 #endif
  33 #ifndef ACS_LLCORNER
  34 #define ACS_LLCORNER '+'
  35 #endif
  36 #ifndef ACS_URCORNER
  37 #define ACS_URCORNER '+'
  38 #endif
  39 #ifndef ACS_LRCORNER
  40 #define ACS_LRCORNER '+'
  41 #endif
  42 #ifndef ACS_HLINE
  43 #define ACS_HLINE '-'
  44 #endif
  45 #ifndef ACS_VLINE
  46 #define ACS_VLINE '|'
  47 #endif
  48 #ifndef ACS_LTEE
  49 #define ACS_LTEE '+'
  50 #endif
  51 #ifndef ACS_RTEE
  52 #define ACS_RTEE '+'
  53 #endif
  54 #ifndef ACS_UARROW
  55 #define ACS_UARROW '^'
  56 #endif
  57 #ifndef ACS_DARROW
  58 #define ACS_DARROW 'v'
  59 #endif
  60
  61 /* error return codes */
  62 #define ERRDISPLAYTOOSMALL (KEY_MAX + 1)
  63
  64 /*
  65  *   Color definitions
  66  */
  67 struct dialog_color {
  68         chtype atr;     /* Color attribute */
  69         int fg;         /* foreground */
  70         int bg;         /* background */
  71         int hl;         /* highlight this item */
  72 };
  73
  74 struct subtitle_list {
  75         struct subtitle_list *next;
  76         const char *text;
  77 };
  78
  79 struct dialog_info {
  80         const char *backtitle;
  81         struct subtitle_list *subtitles;
  82         struct dialog_color screen;
  83         struct dialog_color shadow;
  84         struct dialog_color dialog;
  85         struct dialog_color title;
  86         struct dialog_color border;
  87         struct dialog_color button_active;
  88         struct dialog_color button_inactive;
  89         struct dialog_color button_key_active;
  90         struct dialog_color button_key_inactive;
  91         struct dialog_color button_label_active;
  92         struct dialog_color button_label_inactive;
  93         struct dialog_color inputbox;
  94         struct dialog_color inputbox_border;
  95         struct dialog_color searchbox;
  96         struct dialog_color searchbox_title;
  97         struct dialog_color searchbox_border;
  98         struct dialog_color position_indicator;
  99         struct dialog_color menubox;
 100         struct dialog_color menubox_border;
 101         struct dialog_color item;
 102         struct dialog_color item_selected;
 103         struct dialog_color tag;
 104         struct dialog_color tag_selected;
 105         struct dialog_color tag_key;
 106         struct dialog_color tag_key_selected;
 107         struct dialog_color check;
 108         struct dialog_color check_selected;
 109         struct dialog_color uarrow;
 110         struct dialog_color darrow;
 111 };
 112
 113 /*
 114  * Global variables
 115  */
 116 extern struct dialog_info dlg;
 117 extern char dialog_input_result[];
 118 extern int saved_x, saved_y;            /* Needed in signal handler in mconf.c */
 119
 120 /*
 121  * Function prototypes
 122  */
 123
 124 /* item list as used by checklist and menubox */
 125 void item_reset(void);
 126 void item_make(const char *fmt, ...);
 127 void item_add_str(const char *fmt, ...);
 128 void item_set_tag(char tag);
 129 void item_set_data(void *p);
 130 void item_set_selected(int val);
 131 int item_activate_selected(void);
 132 void *item_data(void);
 133 char item_tag(void);
 134
 135 /* item list manipulation for lxdialog use */
 136 #define MAXITEMSTR 200
 137 struct dialog_item {
 138         char str[MAXITEMSTR];   /* prompt displayed */
 139         char tag;
 140         void *data;     /* pointer to menu item - used by menubox+checklist */
 141         int selected;   /* Set to 1 by dialog_*() function if selected. */
 142 };
 143
 144 /* list of lialog_items */
 145 struct dialog_list {
 146         struct dialog_item node;
 147         struct dialog_list *next;
 148 };
 149
 150 extern struct dialog_list *item_cur;
 151 extern struct dialog_list item_nil;
 152 extern struct dialog_list *item_head;
 153
 154 int item_count(void);
 155 void item_set(int n);
 156 int item_n(void);
 157 const char *item_str(void);
 158 int item_is_selected(void);
 159 int item_is_tag(char tag);
 160 #define item_foreach() \
 161         for (item_cur = item_head ? item_head: item_cur; \
 162              item_cur && (item_cur != &item_nil); item_cur = item_cur->next)
 163
 164 /* generic key handlers */
 165 int on_key_esc(WINDOW *win);
 166 int on_key_resize(void);
 167
 168 /* minimum (re)size values */
 169 #define CHECKLIST_HEIGTH_MIN 6  /* For dialog_checklist() */
 170 #define CHECKLIST_WIDTH_MIN 6
 171 #define INPUTBOX_HEIGTH_MIN 2   /* For dialog_inputbox() */
 172 #define INPUTBOX_WIDTH_MIN 2
 173 #define MENUBOX_HEIGTH_MIN 15   /* For dialog_menu() */
 174 #define MENUBOX_WIDTH_MIN 65
 175 #define TEXTBOX_HEIGTH_MIN 8    /* For dialog_textbox() */
 176 #define TEXTBOX_WIDTH_MIN 8
 177 #define YESNO_HEIGTH_MIN 4      /* For dialog_yesno() */
 178 #define YESNO_WIDTH_MIN 4
 179 #define WINDOW_HEIGTH_MIN 19    /* For init_dialog() */
 180 #define WINDOW_WIDTH_MIN 80
 181
 182 int init_dialog(const char *backtitle);
 183 void set_dialog_backtitle(const char *backtitle);
 184 void set_dialog_subtitles(struct subtitle_list *subtitles);
 185 void end_dialog(int x, int y);
 186 void attr_clear(WINDOW * win, int height, int width, chtype attr);
 187 void dialog_clear(void);
 188 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x);
 189 void print_button(WINDOW * win, const char *label, int y, int x, int selected);
 190 void print_title(WINDOW *dialog, const char *title, int width);
 191 void draw_box(WINDOW * win, int y, int x, int height, int width, chtype box,
 192               chtype border);
 193 void draw_shadow(WINDOW * win, int y, int x, int height, int width);
 194
 195 int first_alpha(const char *string, const char *exempt);
 196 int dialog_yesno(const char *title, const char *prompt, int height, int width);
 197 int dialog_msgbox(const char *title, const char *prompt, int height,
 198                   int width, int pause);
 199 int dialog_textbox(const char *title, const char *tbuf, int initial_height,
 200                    int initial_width, int *_vscroll, int *_hscroll,
 201                    int (*extra_key_cb)(int, size_t, size_t, void *), void *data);
 202 int dialog_menu(const char *title, const char *prompt,
 203                 const void *selected, int *s_scroll);
 204 int dialog_checklist(const char *title, const char *prompt, int height,
 205                      int width, int list_height);
 206 int dialog_inputbox(const char *title, const char *prompt, int height,
 207                     int width, const char *init);