scripts/config/lxdialog/dialog.h

   1 /*
   2  *  dialog.h -- common declarations for all dialog modules
   3  *
   4  *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
   5  *
   6  *  This program is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU General Public License
   8  *  as published by the Free Software Foundation; either version 2
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include <sys/types.h>
  22 #include <fcntl.h>
  23 #include <unistd.h>
  24 #include <ctype.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <stdbool.h>
  28
  29 #ifndef KBUILD_NO_NLS
  30 # include <libintl.h>
  31 #else
  32 # define gettext(Msgid) ((const char *) (Msgid))
  33 #endif
  34
  35 #ifdef __sun__
  36 #define CURS_MACROS
  37 #endif
  38 #include CURSES_LOC
  39
  40 /*
  41  * Colors in ncurses 1.9.9e do not work properly since foreground and
  42  * background colors are OR'd rather than separately masked.  This version
  43  * of dialog was hacked to work with ncurses 1.9.9e, making it incompatible
  44  * with standard curses.  The simplest fix (to make this work with standard
  45  * curses) uses the wbkgdset() function, not used in the original hack.
  46  * Turn it off if we're building with 1.9.9e, since it just confuses things.
  47  */
  48 #if defined(NCURSES_VERSION) && defined(_NEED_WRAP) && !defined(GCC_PRINTFLIKE)
  49 #define OLD_NCURSES 1
  50 #undef  wbkgdset
  51 #define wbkgdset(w,p)           /*nothing */
  52 #else
  53 #define OLD_NCURSES 0
  54 #endif
  55
  56 #define TR(params) _tracef params
  57
  58 #define KEY_ESC 27
  59 #define TAB 9
  60 #define MAX_LEN 2048
  61 #define BUF_SIZE (10*1024)
  62 #define MIN(x,y) (x < y ? x : y)
  63 #define MAX(x,y) (x > y ? x : y)
  64
  65 #ifndef ACS_ULCORNER
  66 #define ACS_ULCORNER '+'
  67 #endif
  68 #ifndef ACS_LLCORNER
  69 #define ACS_LLCORNER '+'
  70 #endif
  71 #ifndef ACS_URCORNER
  72 #define ACS_URCORNER '+'
  73 #endif
  74 #ifndef ACS_LRCORNER
  75 #define ACS_LRCORNER '+'
  76 #endif
  77 #ifndef ACS_HLINE
  78 #define ACS_HLINE '-'
  79 #endif
  80 #ifndef ACS_VLINE
  81 #define ACS_VLINE '|'
  82 #endif
  83 #ifndef ACS_LTEE
  84 #define ACS_LTEE '+'
  85 #endif
  86 #ifndef ACS_RTEE
  87 #define ACS_RTEE '+'
  88 #endif
  89 #ifndef ACS_UARROW
  90 #define ACS_UARROW '^'
  91 #endif
  92 #ifndef ACS_DARROW
  93 #define ACS_DARROW 'v'
  94 #endif
  95
  96 /* error return codes */
  97 #define ERRDISPLAYTOOSMALL (KEY_MAX + 1)
  98
  99 /*
 100  *   Color definitions
 101  */
 102 struct dialog_color {
 103         chtype atr;     /* Color attribute */
 104         int fg;         /* foreground */
 105         int bg;         /* background */
 106         int hl;         /* highlight this item */
 107 };
 108
 109 struct dialog_info {
 110         const char *backtitle;
 111         struct dialog_color screen;
 112         struct dialog_color shadow;
 113         struct dialog_color dialog;
 114         struct dialog_color title;
 115         struct dialog_color border;
 116         struct dialog_color button_active;
 117         struct dialog_color button_inactive;
 118         struct dialog_color button_key_active;
 119         struct dialog_color button_key_inactive;
 120         struct dialog_color button_label_active;
 121         struct dialog_color button_label_inactive;
 122         struct dialog_color inputbox;
 123         struct dialog_color inputbox_border;
 124         struct dialog_color searchbox;
 125         struct dialog_color searchbox_title;
 126         struct dialog_color searchbox_border;
 127         struct dialog_color position_indicator;
 128         struct dialog_color menubox;
 129         struct dialog_color menubox_border;
 130         struct dialog_color item;
 131         struct dialog_color item_selected;
 132         struct dialog_color tag;
 133         struct dialog_color tag_selected;
 134         struct dialog_color tag_key;
 135         struct dialog_color tag_key_selected;
 136         struct dialog_color check;
 137         struct dialog_color check_selected;
 138         struct dialog_color uarrow;
 139         struct dialog_color darrow;
 140 };
 141
 142 /*
 143  * Global variables
 144  */
 145 extern struct dialog_info dlg;
 146 extern char dialog_input_result[];
 147 extern int saved_x, saved_y;            /* Needed in signal handler in mconf.c */
 148
 149 /*
 150  * Function prototypes
 151  */
 152
 153 /* item list as used by checklist and menubox */
 154 void item_reset(void);
 155 void item_make(const char *fmt, ...);
 156 void item_add_str(const char *fmt, ...);
 157 void item_set_tag(char tag);
 158 void item_set_data(void *p);
 159 void item_set_selected(int val);
 160 int item_activate_selected(void);
 161 void *item_data(void);
 162 char item_tag(void);
 163
 164 /* item list manipulation for lxdialog use */
 165 #define MAXITEMSTR 200
 166 struct dialog_item {
 167         char str[MAXITEMSTR];   /* promtp displayed */
 168         char tag;
 169         void *data;     /* pointer to menu item - used by menubox+checklist */
 170         int selected;   /* Set to 1 by dialog_*() function if selected. */
 171 };
 172
 173 /* list of lialog_items */
 174 struct dialog_list {
 175         struct dialog_item node;
 176         struct dialog_list *next;
 177 };
 178
 179 extern struct dialog_list *item_cur;
 180 extern struct dialog_list item_nil;
 181 extern struct dialog_list *item_head;
 182
 183 int item_count(void);
 184 void item_set(int n);
 185 int item_n(void);
 186 const char *item_str(void);
 187 int item_is_selected(void);
 188 int item_is_tag(char tag);
 189 #define item_foreach() \
 190         for (item_cur = item_head ? item_head: item_cur; \
 191              item_cur && (item_cur != &item_nil); item_cur = item_cur->next)
 192
 193 /* generic key handlers */
 194 int on_key_esc(WINDOW *win);
 195 int on_key_resize(void);
 196
 197 int init_dialog(const char *backtitle);
 198 void set_dialog_backtitle(const char *backtitle);
 199 void end_dialog(int x, int y);
 200 void attr_clear(WINDOW * win, int height, int width, chtype attr);
 201 void dialog_clear(void);
 202 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x);
 203 void print_button(WINDOW * win, const char *label, int y, int x, int selected);
 204 void print_title(WINDOW *dialog, const char *title, int width);
 205 void draw_box(WINDOW * win, int y, int x, int height, int width, chtype box,
 206               chtype border);
 207 void draw_shadow(WINDOW * win, int y, int x, int height, int width);
 208
 209 int first_alpha(const char *string, const char *exempt);
 210 int dialog_yesno(const char *title, const char *prompt, int height, int width);
 211 int dialog_msgbox(const char *title, const char *prompt, int height,
 212                   int width, int pause);
 213
 214
 215 typedef void (*update_text_fn)(char *buf, size_t start, size_t end, void
 216                                *_data);
 217 int dialog_textbox(const char *title, char *tbuf, int initial_height,
 218                    int initial_width, int *keys, int *_vscroll, int *_hscroll,
 219                    update_text_fn update_text, void *data);
 220 int dialog_menu(const char *title, const char *prompt,
 221                 const void *selected, int *s_scroll);
 222 int dialog_checklist(const char *title, const char *prompt, int height,
 223                      int width, int list_height);
 224 int dialog_inputbox(const char *title, const char *prompt, int height,
 225                     int width, const char *init);
 226
 227 /*
 228  * This is the base for fictitious keys, which activate
 229  * the buttons.
 230  *
 231  * Mouse-generated keys are the following:
 232  *   -- the first 32 are used as numbers, in addition to '0'-'9'
 233  *   -- the lowercase are used to signal mouse-enter events (M_EVENT + 'o')
 234  *   -- uppercase chars are used to invoke the button (M_EVENT + 'O')
 235  */
 236 #define M_EVENT (KEY_MAX+1)