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NetBSD/lib/libform/form.h

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/* $NetBSD: form.h,v 1.6 2001/01/23 01:59:29 blymn Exp $ */
/*-
* Copyright (c) 1998-1999 Brett Lymn
* (blymn@baea.com.au, brett_lymn@yahoo.com.au)
* All rights reserved.
*
* This code has been donated to The NetBSD Foundation by the Author.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
*/
#ifndef FORM_H
#define FORM_H 1
#include <sys/queue.h>
#include <stdarg.h>
#include <curses.h>
#include <eti.h>
/* Define the types of field justification that can be used. */
#define NO_JUSTIFICATION 0
#define JUSTIFY_RIGHT 1
#define JUSTIFY_LEFT 2
#define JUSTIFY_CENTER 3
/* Define the max and min valid justification styles for range checking */
#define MIN_JUST_STYLE NO_JUSTIFICATION
#define MAX_JUST_STYLE JUSTIFY_CENTER
/* Options for the fields */
typedef unsigned int Form_Options;
/* form options */
#define O_BS_OVERLOAD (0x001)
#define O_NL_OVERLOAD (0x002)
/* field options */
#define O_VISIBLE 0x001 /* Field is visible */
#define O_ACTIVE 0x002 /* Field is active in the form */
#define O_PUBLIC 0x004 /* The contents entered into the field is echoed */
#define O_EDIT 0x008 /* Can edit the field */
#define O_WRAP 0x010 /* The field contents can line wrap */
#define O_BLANK 0x020 /* Blank the field on modification */
#define O_AUTOSKIP 0x040 /* Skip to next field when current is full */
#define O_NULLOK 0x080 /* Field is allowed to contain no data */
#define O_STATIC 0x100 /* Field is not dynamic */
#define O_PASSOK 0x200 /* ??? */
/* Form driver requests */
#define REQ_MIN_REQUEST 0x100 /* must equal value of the first request */
#define REQ_NEXT_PAGE 0x100 /* next page in form */
#define REQ_PREV_PAGE 0x101 /* previous page in form */
#define REQ_FIRST_PAGE 0x102 /* goto first page in form */
#define REQ_LAST_PAGE 0x103 /* goto last page in form */
#define REQ_NEXT_FIELD 0x104 /* move to the next field */
#define REQ_PREV_FIELD 0x105 /* move to the previous field */
#define REQ_FIRST_FIELD 0x106 /* goto the first field */
#define REQ_LAST_FIELD 0x107 /* goto the last field */
#define REQ_SNEXT_FIELD 0x108 /* move to the next field in sorted order */
#define REQ_SPREV_FIELD 0x109 /* move to the prev field in sorted order */
#define REQ_SFIRST_FIELD 0x10a /* move to the first sorted field */
#define REQ_SLAST_FIELD 0x10b /* move to the last sorted field */
#define REQ_LEFT_FIELD 0x10c /* go left one field */
#define REQ_RIGHT_FIELD 0x10d /* go right one field */
#define REQ_UP_FIELD 0x10e /* go up one field */
#define REQ_DOWN_FIELD 0x10f /* go down one field */
#define REQ_NEXT_CHAR 0x110 /* move to the next char in field */
#define REQ_PREV_CHAR 0x111 /* move to the previous char in field */
#define REQ_NEXT_LINE 0x112 /* go to the next line in the field */
#define REQ_PREV_LINE 0x113 /* go to the previous line in the field */
#define REQ_NEXT_WORD 0x114 /* go to the next word in the field */
#define REQ_PREV_WORD 0x115 /* go to the previous word in the field */
#define REQ_BEG_FIELD 0x116 /* go to the beginning of the field */
#define REQ_END_FIELD 0x117 /* go to the end of the field */
#define REQ_BEG_LINE 0x118 /* go to the beginning of the line */
#define REQ_END_LINE 0x119 /* go to the end of the line */
#define REQ_LEFT_CHAR 0x11a /* move left in the field */
#define REQ_RIGHT_CHAR 0x11b /* move right in the field */
#define REQ_UP_CHAR 0x11c /* move up in the field */
#define REQ_DOWN_CHAR 0x11d /* move down in the field */
#define REQ_NEW_LINE 0x11e /* insert/overlay a new line */
#define REQ_INS_CHAR 0x11f /* insert a blank char at the cursor */
#define REQ_INS_LINE 0x120 /* insert a blank line at the cursor */
#define REQ_DEL_CHAR 0x121 /* delete the current character */
#define REQ_DEL_PREV 0x122 /* delete the character before the current */
#define REQ_DEL_LINE 0x123 /* delete the current line */
#define REQ_DEL_WORD 0x124 /* delete the word at the cursor */
#define REQ_CLR_EOL 0x125 /* clear to the end of the line */
#define REQ_CLR_EOF 0x126 /* clear to the end of the field */
#define REQ_CLR_FIELD 0x127 /* clear the field */
#define REQ_OVL_MODE 0x128 /* overlay mode */
#define REQ_INS_MODE 0x129 /* insert mode */
#define REQ_SCR_FLINE 0x12a /* scroll field forward one line */
#define REQ_SCR_BLINE 0x12b /* scroll field backward one line */
#define REQ_SCR_FPAGE 0x12c /* scroll field forward one page */
#define REQ_SCR_BPAGE 0x12d /* scroll field backward one page */
#define REQ_SCR_FHPAGE 0x12e /* scroll field forward half a page */
#define REQ_SCR_BHPAGE 0x12f /* scroll field backward half a page */
#define REQ_SCR_FCHAR 0x130 /* horizontal scroll forward a character */
#define REQ_SCR_BCHAR 0x131 /* horizontal scroll backward a character */
#define REQ_SCR_HFLINE 0x132 /* horizontal scroll forward a line */
#define REQ_SCR_HBLINE 0x133 /* horizontal scroll backward a line */
#define REQ_SCR_HFHALF 0x134 /* horizontal scroll forward half a line */
#define REQ_SCR_HBHALF 0x135 /* horizontal scroll backward half a line */
#define REQ_VALIDATION 0x136 /* validate the field */
#define REQ_PREV_CHOICE 0x137 /* display previous field choice */
#define REQ_NEXT_CHOICE 0x138 /* display next field choice */
#define REQ_MAX_COMMAND 0x138 /* must match the last driver command */
typedef struct _form_string {
size_t allocated;
unsigned int length;
char *string;
} FORM_STR;
typedef struct _form_field FIELD;
typedef struct _form_struct FORM;
typedef struct _form_fieldtype FIELDTYPE;
typedef struct _formi_page_struct _FORMI_PAGE_START;
typedef struct formi_type_link_struct _FORMI_TYPE_LINK;
typedef void (*Form_Hook)(FORM *);
/* definition of a field in the form */
struct _form_field {
unsigned int rows; /* rows in the field */
unsigned int cols; /* columns in the field */
unsigned int drows; /* dynamic rows */
unsigned int dcols; /* dynamic columns */
unsigned int max; /* maximum growth */
unsigned int form_row; /* starting row in the form subwindow */
unsigned int form_col; /* starting column in the form subwindow */
unsigned int nrows; /* number of off screen rows */
int index; /* index of this field in form fields array. */
int nbuf; /* number of buffers associated with this field */
int buf0_status; /* set to true if buffer 0 has changed. */
int justification; /* justification style of the field */
int overlay; /* set to true if field is in overlay mode */
unsigned int start_char; /* starting char in string (horiz scroll) */
unsigned int start_line; /* starting line in field (vert scroll) */
unsigned int hscroll; /* amount of horizontal scroll... */
unsigned int row_count; /* number of rows actually used in field */
unsigned int cursor_xpos; /* x pos of cursor in field */
unsigned int cursor_ypos; /* y pos of cursor in field */
short page_break; /* start of a new page on the form if 1 */
short page; /* number of the page this field is on */
chtype fore; /* character attributes for the foreground */
chtype back; /* character attributes for the background */
int pad; /* padding character */
Form_Options opts; /* options for the field */
FORM *parent; /* the form this field is bound to, if any */
FIELD *up; /* field above this one */
FIELD *down; /* field below this one */
FIELD *left; /* field to the left of this one */
FIELD *right; /* field to the right of this one */
void *userptr; /* user defined pointer. */
FIELD *link; /* used if fields are linked */
FIELDTYPE *type; /* type struct for the field */
CIRCLEQ_ENTRY(_form_field) glue; /* circle queue glue for sorting fields */
char *args; /* args for field type. */
FORM_STR *buffers; /* array of buffers for the field */
};
/* define the types of fields we can have */
extern FIELDTYPE *TYPE_ALNUM;
extern FIELDTYPE *TYPE_ALPHA;
extern FIELDTYPE *TYPE_ENUM;
extern FIELDTYPE *TYPE_INTEGER;
extern FIELDTYPE *TYPE_NUMERIC;
extern FIELDTYPE *TYPE_REGEXP;
extern FIELDTYPE *TYPE_USER;
/* definition of a field type. */
struct _form_fieldtype {
unsigned flags; /* status of the type */
unsigned refcount; /* in use if > 0 */
_FORMI_TYPE_LINK *link; /* set if this type is linked */
char * (*make_args)(va_list *); /* make the args for the type */
char * (*copy_args)(char *); /* copy the args for the type */
void (*free_args)(char *); /* free storage used by the args */
int (*field_check)(FIELD *, char *); /* field validation routine */
int (*char_check)(int, char *); /* char validation routine */
int (*next_choice)(FIELD *, char *); /* function to select next
choice */
int (*prev_choice)(FIELD *, char *); /* function to select prev
choice */
};
/*definition of a form */
struct _form_struct {
int in_init; /* true if performing a init or term function */
int posted; /* the form is posted */
int wrap; /* wrap from last field to first field if true */
WINDOW *win; /* window for the form */
WINDOW *subwin; /* subwindow for the form */
void *userptr; /* user defined pointer */
Form_Options opts; /* options for the form */
Form_Hook form_init; /* function called when form posted and
after page change */
Form_Hook form_term; /* function called when form is unposted and
before page change */
Form_Hook field_init; /* function called when form posted and after
current field changes */
Form_Hook field_term; /* function called when form unposted and
before current field changes */
int field_count; /* number of fields attached */
int cur_field; /* current field */
int page; /* current page of form */
int max_page; /* number of pages in the form */
int subwin_created; /* libform made the window */
_FORMI_PAGE_START *page_starts; /* dynamic array of fields that start
the pages */
CIRCLEQ_HEAD(_formi_sort_head, _form_field) sorted_fields; /* sorted field
list */
FIELD **fields; /* array of fields attached to this form. */
};
/* Public function prototypes. */
__BEGIN_DECLS
FIELD *current_field(FORM *);
int data_ahead(FORM *);
int data_behind(FORM *);
FIELD *dup_field(FIELD *, int, int);
int dynamic_field_info(FIELD *, int *, int *, int *);
char *field_arg(FIELD *);
chtype field_back(FIELD *);
char *field_buffer(FIELD *, int);
int field_count(FORM *);
chtype field_fore(FIELD *);
int field_index(FIELD *);
int field_info __P((FIELD *, int *, int *, int *, int *,
int *, int *));
Form_Hook field_init(FORM *);
int field_just(FIELD *);
Form_Options field_opts(FIELD *);
int field_opts_off(FIELD *, Form_Options);
int field_opts_on(FIELD *, Form_Options);
int field_pad(FIELD *);
int field_status(FIELD *);
Form_Hook field_term(FORM *);
FIELDTYPE *field_type(FIELD *);
void *field_userptr(FIELD *);
int form_driver(FORM *, int);
FIELD **form_fields(FORM *);
Form_Hook form_init(FORM *);
Form_Options form_opts(FORM *);
int form_opts_off(FORM *, Form_Options);
int form_opts_on(FORM *, Form_Options);
int form_page(FORM *);
WINDOW *form_sub(FORM *);
Form_Hook form_term(FORM *);
void *form_userptr(FORM *);
WINDOW *form_win(FORM *);
int free_field(FIELD *);
int free_fieldtype(FIELDTYPE *);
int free_form(FORM *);
FIELD *link_field(FIELD *, int, int);
FIELDTYPE *link_fieldtype(FIELDTYPE *, FIELDTYPE *);
int move_field(FIELD *, int, int);
FIELD *new_field(int, int, int, int, int, int);
FIELDTYPE *new_fieldtype(int (* field_check)(FIELD *, char *),
int (* char_check)(int, char *));
FORM *new_form(FIELD **);
int new_page(FIELD *);
int pos_form_cursor(FORM *);
int post_form(FORM *);
int scale_form(FORM *, int *, int *);
int set_current_field(FORM *, FIELD *);
int set_field_back(FIELD *, chtype);
int set_field_buffer(FIELD *, int, char *);
int set_field_fore(FIELD *, chtype);
int set_field_init(FORM *, Form_Hook);
int set_field_just(FIELD *, int);
int set_field_opts(FIELD *, Form_Options);
int set_field_pad(FIELD *, int);
int set_field_status(FIELD *, int);
int set_field_term(FORM *, Form_Hook);
int set_field_type(FIELD *, FIELDTYPE *, ...);
int set_field_userptr(FIELD *, void *);
int set_fieldtype_arg(FIELDTYPE *, char *(*)(va_list *),
char *(*)(char *),
void (*)(char *));
int set_fieldtype_choice(FIELDTYPE *, int (*)(FIELD *, char *),
int (*)(FIELD *, char *));
int set_form_fields(FORM *, FIELD **);
int set_form_init(FORM *, Form_Hook);
int set_form_opts(FORM *, Form_Options);
int set_form_page(FORM *, int);
int set_form_sub(FORM *, WINDOW *);
int set_form_term(FORM *, Form_Hook);
int set_form_userptr(FORM *, void *);
int set_form_win(FORM *, WINDOW *);
int set_max_field(FIELD *, int);
int set_new_page(FIELD *, int);
int unpost_form(FORM *);
__END_DECLS
#endif /* FORM_H */
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