LXR toybox/kconfig/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#ifdef __sun__
  30#define CURS_MACROS
  31#endif
  32#include CURSES_LOC
  33
  34/*
  35 * Colors in ncurses 1.9.9e do not work properly since foreground and
  36 * background colors are OR'd rather than separately masked.  This version
  37 * of dialog was hacked to work with ncurses 1.9.9e, making it incompatible
  38 * with standard curses.  The simplest fix (to make this work with standard
  39 * curses) uses the wbkgdset() function, not used in the original hack.
  40 * Turn it off if we're building with 1.9.9e, since it just confuses things.
  41 */
  42#if defined(NCURSES_VERSION) && defined(_NEED_WRAP) && !defined(GCC_PRINTFLIKE)
  43#define OLD_NCURSES 1
  44#undef  wbkgdset
  45#define wbkgdset(w,p)           /*nothing */
  46#else
  47#define OLD_NCURSES 0
  48#endif
  49
  50#define TR(params) _tracef params
  51
  52#define KEY_ESC 27
  53#define TAB 9
  54#define MAX_LEN 2048
  55#define BUF_SIZE (10*1024)
  56#define MIN(x,y) (x < y ? x : y)
  57#define MAX(x,y) (x > y ? x : y)
  58
  59#ifndef ACS_ULCORNER
  60#define ACS_ULCORNER '+'
  61#endif
  62#ifndef ACS_LLCORNER
  63#define ACS_LLCORNER '+'
  64#endif
  65#ifndef ACS_URCORNER
  66#define ACS_URCORNER '+'
  67#endif
  68#ifndef ACS_LRCORNER
  69#define ACS_LRCORNER '+'
  70#endif
  71#ifndef ACS_HLINE
  72#define ACS_HLINE '-'
  73#endif
  74#ifndef ACS_VLINE
  75#define ACS_VLINE '|'
  76#endif
  77#ifndef ACS_LTEE
  78#define ACS_LTEE '+'
  79#endif
  80#ifndef ACS_RTEE
  81#define ACS_RTEE '+'
  82#endif
  83#ifndef ACS_UARROW
  84#define ACS_UARROW '^'
  85#endif
  86#ifndef ACS_DARROW
  87#define ACS_DARROW 'v'
  88#endif
  89
  90/* error return codes */
  91#define ERRDISPLAYTOOSMALL (KEY_MAX + 1)
  92
  93/*
  94 *   Color definitions
  95 */
  96struct dialog_color {
  97        chtype atr;     /* Color attribute */
  98        int fg;         /* foreground */
  99        int bg;         /* background */
 100        int hl;         /* highlight this item */
 101};
 102
 103struct dialog_info {
 104        const char *backtitle;
 105        struct dialog_color screen;
 106        struct dialog_color shadow;
 107        struct dialog_color dialog;
 108        struct dialog_color title;
 109        struct dialog_color border;
 110        struct dialog_color button_active;
 111        struct dialog_color button_inactive;
 112        struct dialog_color button_key_active;
 113        struct dialog_color button_key_inactive;
 114        struct dialog_color button_label_active;
 115        struct dialog_color button_label_inactive;
 116        struct dialog_color inputbox;
 117        struct dialog_color inputbox_border;
 118        struct dialog_color searchbox;
 119        struct dialog_color searchbox_title;
 120        struct dialog_color searchbox_border;
 121        struct dialog_color position_indicator;
 122        struct dialog_color menubox;
 123        struct dialog_color menubox_border;
 124        struct dialog_color item;
 125        struct dialog_color item_selected;
 126        struct dialog_color tag;
 127        struct dialog_color tag_selected;
 128        struct dialog_color tag_key;
 129        struct dialog_color tag_key_selected;
 130        struct dialog_color check;
 131        struct dialog_color check_selected;
 132        struct dialog_color uarrow;
 133        struct dialog_color darrow;
 134};
 135
 136/*
 137 * Global variables
 138 */
 139extern struct dialog_info dlg;
 140extern char dialog_input_result[];
 141
 142/*
 143 * Function prototypes
 144 */
 145
 146/* item list as used by checklist and menubox */
 147void item_reset(void);
 148void item_make(const char *fmt, ...);
 149void item_add_str(const char *fmt, ...);
 150void item_set_tag(char tag);
 151void item_set_data(void *p);
 152void item_set_selected(int val);
 153int item_activate_selected(void);
 154void *item_data(void);
 155char item_tag(void);
 156
 157/* item list manipulation for lxdialog use */
 158#define MAXITEMSTR 200
 159struct dialog_item {
 160        char str[MAXITEMSTR];   /* promtp displayed */
 161        char tag;
 162        void *data;     /* pointer to menu item - used by menubox+checklist */
 163        int selected;   /* Set to 1 by dialog_*() function if selected. */
 164};
 165
 166/* list of lialog_items */
 167struct dialog_list {
 168        struct dialog_item node;
 169        struct dialog_list *next;
 170};
 171
 172extern struct dialog_list *item_cur;
 173extern struct dialog_list item_nil;
 174extern struct dialog_list *item_head;
 175
 176int item_count(void);
 177void item_set(int n);
 178int item_n(void);
 179const char *item_str(void);
 180int item_is_selected(void);
 181int item_is_tag(char tag);
 182#define item_foreach() \
 183        for (item_cur = item_head ? item_head: item_cur; \
 184             item_cur && (item_cur != &item_nil); item_cur = item_cur->next)
 185
 186/* generic key handlers */
 187int on_key_esc(WINDOW *win);
 188int on_key_resize(void);
 189
 190void init_dialog(const char *backtitle);
 191void reset_dialog(void);
 192void end_dialog(void);
 193void attr_clear(WINDOW * win, int height, int width, chtype attr);
 194void dialog_clear(void);
 195void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x);
 196void print_button(WINDOW * win, const char *label, int y, int x, int selected);
 197void print_title(WINDOW *dialog, const char *title, int width);
 198void draw_box(WINDOW * win, int y, int x, int height, int width, chtype box,
 199              chtype border);
 200void draw_shadow(WINDOW * win, int y, int x, int height, int width);
 201
 202int first_alpha(const char *string, const char *exempt);
 203int dialog_yesno(const char *title, const char *prompt, int height, int width);
 204int dialog_msgbox(const char *title, const char *prompt, int height,
 205                  int width, int pause);
 206int dialog_textbox(const char *title, const char *file, int height, int width);
 207int dialog_menu(const char *title, const char *prompt,
 208                const void *selected, int *s_scroll);
 209int dialog_checklist(const char *title, const char *prompt, int height,
 210                     int width, int list_height);
 211extern char dialog_input_result[];
 212int dialog_inputbox(const char *title, const char *prompt, int height,
 213                    int width, const char *init);
 214
 215/*
 216 * This is the base for fictitious keys, which activate
 217 * the buttons.
 218 *
 219 * Mouse-generated keys are the following:
 220 *   -- the first 32 are used as numbers, in addition to '0'-'9'
 221 *   -- the lowercase are used to signal mouse-enter events (M_EVENT + 'o')
 222 *   -- uppercase chars are used to invoke the button (M_EVENT + 'O')
 223 */
 224#define M_EVENT (KEY_MAX+1)
 225