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Linux/scripts/kconfig/lxdialog/dialog.h

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  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 subtitle_list {
110         struct subtitle_list *next;
111         const char *text;
112 };
113 
114 struct dialog_info {
115         const char *backtitle;
116         struct subtitle_list *subtitles;
117         struct dialog_color screen;
118         struct dialog_color shadow;
119         struct dialog_color dialog;
120         struct dialog_color title;
121         struct dialog_color border;
122         struct dialog_color button_active;
123         struct dialog_color button_inactive;
124         struct dialog_color button_key_active;
125         struct dialog_color button_key_inactive;
126         struct dialog_color button_label_active;
127         struct dialog_color button_label_inactive;
128         struct dialog_color inputbox;
129         struct dialog_color inputbox_border;
130         struct dialog_color searchbox;
131         struct dialog_color searchbox_title;
132         struct dialog_color searchbox_border;
133         struct dialog_color position_indicator;
134         struct dialog_color menubox;
135         struct dialog_color menubox_border;
136         struct dialog_color item;
137         struct dialog_color item_selected;
138         struct dialog_color tag;
139         struct dialog_color tag_selected;
140         struct dialog_color tag_key;
141         struct dialog_color tag_key_selected;
142         struct dialog_color check;
143         struct dialog_color check_selected;
144         struct dialog_color uarrow;
145         struct dialog_color darrow;
146 };
147 
148 /*
149  * Global variables
150  */
151 extern struct dialog_info dlg;
152 extern char dialog_input_result[];
153 extern int saved_x, saved_y;            /* Needed in signal handler in mconf.c */
154 
155 /*
156  * Function prototypes
157  */
158 
159 /* item list as used by checklist and menubox */
160 void item_reset(void);
161 void item_make(const char *fmt, ...);
162 void item_add_str(const char *fmt, ...);
163 void item_set_tag(char tag);
164 void item_set_data(void *p);
165 void item_set_selected(int val);
166 int item_activate_selected(void);
167 void *item_data(void);
168 char item_tag(void);
169 
170 /* item list manipulation for lxdialog use */
171 #define MAXITEMSTR 200
172 struct dialog_item {
173         char str[MAXITEMSTR];   /* prompt displayed */
174         char tag;
175         void *data;     /* pointer to menu item - used by menubox+checklist */
176         int selected;   /* Set to 1 by dialog_*() function if selected. */
177 };
178 
179 /* list of lialog_items */
180 struct dialog_list {
181         struct dialog_item node;
182         struct dialog_list *next;
183 };
184 
185 extern struct dialog_list *item_cur;
186 extern struct dialog_list item_nil;
187 extern struct dialog_list *item_head;
188 
189 int item_count(void);
190 void item_set(int n);
191 int item_n(void);
192 const char *item_str(void);
193 int item_is_selected(void);
194 int item_is_tag(char tag);
195 #define item_foreach() \
196         for (item_cur = item_head ? item_head: item_cur; \
197              item_cur && (item_cur != &item_nil); item_cur = item_cur->next)
198 
199 /* generic key handlers */
200 int on_key_esc(WINDOW *win);
201 int on_key_resize(void);
202 
203 /* minimum (re)size values */
204 #define CHECKLIST_HEIGTH_MIN 6  /* For dialog_checklist() */
205 #define CHECKLIST_WIDTH_MIN 6
206 #define INPUTBOX_HEIGTH_MIN 2   /* For dialog_inputbox() */
207 #define INPUTBOX_WIDTH_MIN 2
208 #define MENUBOX_HEIGTH_MIN 15   /* For dialog_menu() */
209 #define MENUBOX_WIDTH_MIN 65
210 #define TEXTBOX_HEIGTH_MIN 8    /* For dialog_textbox() */
211 #define TEXTBOX_WIDTH_MIN 8
212 #define YESNO_HEIGTH_MIN 4      /* For dialog_yesno() */
213 #define YESNO_WIDTH_MIN 4
214 #define WINDOW_HEIGTH_MIN 19    /* For init_dialog() */
215 #define WINDOW_WIDTH_MIN 80
216 
217 int init_dialog(const char *backtitle);
218 void set_dialog_backtitle(const char *backtitle);
219 void set_dialog_subtitles(struct subtitle_list *subtitles);
220 void end_dialog(int x, int y);
221 void attr_clear(WINDOW * win, int height, int width, chtype attr);
222 void dialog_clear(void);
223 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x);
224 void print_button(WINDOW * win, const char *label, int y, int x, int selected);
225 void print_title(WINDOW *dialog, const char *title, int width);
226 void draw_box(WINDOW * win, int y, int x, int height, int width, chtype box,
227               chtype border);
228 void draw_shadow(WINDOW * win, int y, int x, int height, int width);
229 
230 int first_alpha(const char *string, const char *exempt);
231 int dialog_yesno(const char *title, const char *prompt, int height, int width);
232 int dialog_msgbox(const char *title, const char *prompt, int height,
233                   int width, int pause);
234 
235 
236 typedef void (*update_text_fn)(char *buf, size_t start, size_t end, void
237                                *_data);
238 int dialog_textbox(const char *title, char *tbuf, int initial_height,
239                    int initial_width, int *keys, int *_vscroll, int *_hscroll,
240                    update_text_fn update_text, void *data);
241 int dialog_menu(const char *title, const char *prompt,
242                 const void *selected, int *s_scroll);
243 int dialog_checklist(const char *title, const char *prompt, int height,
244                      int width, int list_height);
245 int dialog_inputbox(const char *title, const char *prompt, int height,
246                     int width, const char *init);
247 
248 /*
249  * This is the base for fictitious keys, which activate
250  * the buttons.
251  *
252  * Mouse-generated keys are the following:
253  *   -- the first 32 are used as numbers, in addition to ''-'9'
254  *   -- the lowercase are used to signal mouse-enter events (M_EVENT + 'o')
255  *   -- uppercase chars are used to invoke the button (M_EVENT + 'O')
256  */
257 #define M_EVENT (KEY_MAX+1)
258 

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