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#ifndef MENU_H
#define MENU_H
/* A single menu */
typedef void (*menu_finish_callback)(struct menu_s *menu);
typedef struct menu_s {
char *name; /* Menu name */
int num_options; /* Number of options in this menu */
int flags; /* Various flags - see below */
int option_align; /* Aligns options to a field width of this much characters if != 0 */
struct menu_option_s **options; /* Pointer to this menu's options */
menu_finish_callback callback; /* Called when the menu closes */
} menu_t;
/*
* type: Type of the option (see below)
* name: Name to display for this option
* help: Optional help string
* id : optional id number
* sys : pointer for system-specific data, init to NULL and don't touch
*/
#define OPTION_PREAMBLE \
int type; \
char *name; \
char *help; \
int id; \
void *sys;
/*
* Menu option types.
* There are a number of different layouts for menu options depending
* on their types. Currently there are the following possibilities:
*
* Submenu:
* This entry links to a new menu.
*
* Boolean:
* A simple on/off toggle entry. Booleans can be either yes/no, 0/1 or on/off.
* Optionally, this entry can enable/disable a set of other options. An example would
* be to enable/disable on-board USB, and if enabled give access to further options like
* irq settings, base address etc.
*
* Text:
* A single line/limited number of characters text entry box. Text can be restricted
* to a certain charset (digits/hex digits/all/custom). Result is also available as an
* int if numeric.
*
* Selection:
* One-of-many type of selection entry. User may choose on of a set of strings, which
* maps to a specific value for the variable.
*
* Routine:
* Selecting this calls an entry-specific routine. This can be used for saving contents etc.
*
* Custom:
* Display and behaviour of this entry is defined by a set of callbacks.
*/
#define MENU_SUBMENU_TYPE 0
typedef struct menu_submenu_s
{
OPTION_PREAMBLE
menu_t * submenu; /* Pointer to the submenu */
} menu_submenu_t;
#define MENU_BOOLEAN_TYPE 1
typedef struct menu_boolean_s
{
OPTION_PREAMBLE
char *variable; /* Name of the variable to getenv()/setenv() */
int subtype; /* Subtype (on/off, 0/1, yes/no, enable/disable), see below */
int mutex; /* Bit mask of options to enable/disable. Bit 0 is the option
immediately following this one, bit 1 is the next one etc.
bit 7 = 0 means to disable when this option is off,
bit 7 = 1 means to disable when this option is on.
An option is disabled when the type field's upper bit is set */
} menu_boolean_t;
/* BOOLEAN Menu flags */
#define MENU_BOOLEAN_ONOFF 0x01
#define MENU_BOOLEAN_01 0x02
#define MENU_BOOLEAN_YESNO 0x03
#define MENU_BOOLEAN_ENDIS 0x04
#define MENU_BOOLEAN_TYPE_MASK 0x07
#define MENU_TEXT_TYPE 2
typedef struct menu_text_s
{
OPTION_PREAMBLE
char *variable; /* Name of the variable to getenv()/setenv() */
int maxchars; /* Max number of characters */
char *charset; /* Optional charset to use */
int flags; /* Flags - see below */
} menu_text_t;
/* TEXT entry menu flags */
#define MENU_TEXT_NUMERIC 0x01
#define MENU_TEXT_HEXADECIMAL 0x02
#define MENU_TEXT_FREE 0x03
#define MENU_TEXT_TYPE_MASK 0x07
#define MENU_SELECTION_TYPE 3
typedef struct menu_select_option_s {
char *map_from; /* Map this variable contents ... */
char *map_to; /* ... to this menu text and vice versa */
} menu_select_option_t;
typedef struct menu_select_s {
OPTION_PREAMBLE int num_options; /* Number of mappings */
menu_select_option_t **options;
/* Option list array */
} menu_select_t;
#define MENU_ROUTINE_TYPE 4
typedef void (*menu_routine_callback) (struct menu_routine_s *);
typedef struct menu_routine_s {
OPTION_PREAMBLE menu_routine_callback callback;
/* routine to be called */
void *user_data; /* User data, don't care for system */
} menu_routine_t;
#define MENU_CUSTOM_TYPE 5
typedef void (*menu_custom_draw) (struct menu_custom_s *);
typedef void (*menu_custom_key) (struct menu_custom_s *, int);
typedef struct menu_custom_s {
OPTION_PREAMBLE menu_custom_draw drawfunc;
menu_custom_key keyfunc;
void *user_data;
} menu_custom_t;
/*
* The menu option superstructure
*/
typedef struct menu_option_s {
union {
menu_submenu_t m_sub_menu;
menu_boolean_t m_boolean;
menu_text_t m_text;
menu_select_t m_select;
menu_routine_t m_routine;
};
} menu_option_t;
/* Init the menu system. Returns <0 on error */
int menu_init(menu_t *root);
/* Execute a single menu. Returns <0 on error */
int menu_do(menu_t *menu);
#endif
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