0d7d76d982
PR: 6868 Submitted by: Josh Gilliam <josh@quick.net>
402 lines
16 KiB
Groff
402 lines
16 KiB
Groff
.\"
|
|
.\" Copyright (c) 1995, Jordan Hubbard
|
|
.\"
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This manual page may be used, modified, copied, distributed, and
|
|
.\" sold, in both source and binary form provided that the above
|
|
.\" copyright and these terms are retained, verbatim, as the first
|
|
.\" lines of this file. Under no circumstances is the author
|
|
.\" responsible for the proper functioning of the software described herein
|
|
.\" nor does the author assume any responsibility for damages incurred with
|
|
.\" its use.
|
|
.\"
|
|
.\" $Id: dialog.3,v 1.6 1997/04/13 12:36:42 bde Exp $
|
|
.\"
|
|
.Dd December 18, 1995
|
|
.Dt dialog 3
|
|
.Os FreeBSD 2
|
|
.Sh NAME
|
|
.Nm draw_shadow ,
|
|
.Nm draw_box ,
|
|
.Nm line_edit ,
|
|
.Nm strheight ,
|
|
.Nm strwidth ,
|
|
.Nm dialog_create_rc,
|
|
.Nm dialog_yesno ,
|
|
.Nm dialog_prgbox ,
|
|
.Nm dialog_msgbox ,
|
|
.Nm dialog_textbox ,
|
|
.Nm dialog_menu ,
|
|
.Nm dialog_checklist ,
|
|
.Nm dialog_radiolist ,
|
|
.Nm dialog_inputbox ,
|
|
.Nm dialog_clear_norefresh ,
|
|
.Nm dialog_clear ,
|
|
.Nm dialog_update ,
|
|
.Nm dialog_fselect ,
|
|
.Nm dialog_notify ,
|
|
.Nm dialog_mesgbox ,
|
|
.Nm dialog_gauge ,
|
|
.Nm init_dialog ,
|
|
.Nm end_dialog ,
|
|
.Nm use_helpfile ,
|
|
.Nm use_helpline ,
|
|
.Nm get_helpline ,
|
|
.Nm restore_helpline
|
|
.Nd Provide a simple ncurses-based "GUI" interface.
|
|
.Sh DESCRIPTION
|
|
The dialog library attempts to provide a fairly simplistic set of
|
|
fixed-presentation menus, input boxes, gauges, file requestors and
|
|
other general purpose "GUI" (a bit of a stretch, since it uses
|
|
ncurses) objects. Since the library also had its roots in a
|
|
shell-script writer's utility (see the \fBdialog(1)\fR command), the
|
|
early API was somewhat primitively based on strings being passed in or
|
|
out and parsed. This API was later extended to take either the
|
|
original arguments or arrays of \fBdialogMenuItem\fR structures,
|
|
giving the user much more control over the internal behavior of each
|
|
control. The \fBdialogMenuItem\fR structure internals are public:
|
|
|
|
.nf
|
|
typedef struct _dmenu_item {
|
|
char *\fBprompt\fR;
|
|
char *\fBtitle\fR;
|
|
int (*\fBchecked\fR)(struct _dmenu_item *self);
|
|
int (*\fBfire\fR)(struct _dmenu_item *self);
|
|
int (*\fBselected\fR)(struct _dmenu_item *self, int is_selected);
|
|
void *\fBdata\fR;
|
|
char \fBlbra\fR, \fBmark\fR, \fBrbra\fR;
|
|
} \fBdialogMenuItem\fR;
|
|
.fi
|
|
|
|
The \fBprompt\fR and \fBtitle\fR strings are pretty much self-explanatory,
|
|
and the \fBchecked\fR and \fBfire\fR function pointers provide optional
|
|
display and action hooks (the \fBdata\fR variable being available for
|
|
the convenience of those hooks) when more tightly coupled feedback between
|
|
a menu object and user code is required. The \fBselected\fR hook also
|
|
allows you to verify whether or not a given item is selected (the cursor is
|
|
over it) for implementing pretty much any possible context-sensitive
|
|
behavior. A number of clever tricks for simulating various kinds of item
|
|
types can also be done by adjusting the values of \fBlbra\fR
|
|
(default: '['), \fB\mark\fR (default: '*' for radio menus, 'X' for check menus)
|
|
and \fBrbra\fR (default: ']') and declaring a reasonable \fBchecked\fR hook,
|
|
which should return TRUE for the `marked' state and FALSE for `unmarked.'
|
|
If an item has a \fBfire\fR hook associated with it, it will also be called
|
|
whenever the item is "toggled" in some way and should return one of the
|
|
following codes:
|
|
.nf
|
|
|
|
#define DITEM_SUCCESS 0 /* Successful completion */
|
|
#define DITEM_FAILURE -1 /* Failed to "fire" */
|
|
#define DITEM_LEAVE_MENU -2 /* Treat selection as "Ok" */
|
|
#define DITEM_REDRAW -3 /* Menu has changed, redraw it */
|
|
|
|
Two special globals also exist for putting a dialog at any arbitrary
|
|
X,Y location (the early designers rather short-sightedly made no provisions
|
|
for this). If set to zero, the default centering behavior will be in
|
|
effect.
|
|
|
|
.fi
|
|
|
|
.Sh SYNOPSIS
|
|
.Fd #include <dialog.h>
|
|
.Ft "void"
|
|
.Fn draw_shadow "WINDOW *win" "int y" "int x" "int height" "int width"
|
|
|
|
Draws a shadow in curses window \fBwin\fR using the dimensions
|
|
of \fBx, y, width\fR and \fBheight\fR. Returns 0 on success, -1 on failure.
|
|
|
|
.Ft "void"
|
|
.Fn draw_box "WINDOW *win" "int y" "int x" "int height" "int width" "chtype box" "chtype border"
|
|
|
|
Draws a bordered box using the dimensions of \fBx, y, width\fR and
|
|
\fBheight\fR. The attributes from \fBbox\fR and \fBborder\fR are
|
|
used, if specified, while painting the box and border regions of the
|
|
object.
|
|
|
|
.Ft "int"
|
|
.Fo line_edit
|
|
.Fa "WINDOW *dialog"
|
|
.Fa "int box_y"
|
|
.Fa "int box_x"
|
|
.Fa "int flen"
|
|
.Fa "int box_width"
|
|
.Fa "chtype attrs"
|
|
.Fa "int first"
|
|
.Fa "unsigned char *result"
|
|
.Fa "int attr_mask"
|
|
.Fc
|
|
|
|
Invoke a simple line editor with an edit box of dimensions \fBbox_x,
|
|
box_y\fR and \fBbox_width\fR. The field length is constrained by
|
|
\fBflen\fR, starting at the \fBfirst\fR character specified and
|
|
optionally displayed with character attributes \fBattrs\fR. The
|
|
string being edited is stored in \fBresult\fR.
|
|
|
|
Returns 0 on success, -1 on failure.
|
|
|
|
.Ft "int"
|
|
.Fn strheight "const char *p"
|
|
|
|
Returns the height of string in \fBp\fR, counting newlines.
|
|
|
|
.Ft "int"
|
|
.Fn strwidth "const char *p"
|
|
|
|
Returns the width of string in \fBp\fR, counting newlines.
|
|
|
|
.Ft "void"
|
|
.Fn dialog_create_rc "unsigned char *filename"
|
|
|
|
Dump dialog library settings into \fBfilename\fR for later retrieval
|
|
as defaults. Returns 0 on success, -1 on failure.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_yesno "unsigned char *title" "unsigned char *prompt" "int height" "int width"
|
|
|
|
Display a text box using \fBtitle\fR and \fBprompt\fR strings of dimensions
|
|
\fBheight\fR and \fBwidth\fR. Also paint a pair of \fBYes\fR and \fBNo\fR
|
|
buttons at the bottom. If the \fBYes\fR button is chosen, return FALSE.
|
|
If \fBNo\fR, return TRUE.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_prgbox "unsigned char *title" "const unsigned char *line" "int height" "int width" "int pause" "int use_shell"
|
|
|
|
Display a text box of dimensions \fBheight\fR and \fBwidth\fR
|
|
containing the output of command \fBline\fR. If \fBuse_shell\fR is
|
|
TRUE, \fBline\fR is passed as an argument to \fBsh(1)\fR, otherwise it
|
|
is simply passed to \fBexec(3)\fR. If \fBpause\fR is TRUE, a final
|
|
confirmation requestor will be put up when execution terminates.
|
|
|
|
Returns 0 on success, -1 on failure.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_textbox "unsigned char *title" "unsigned char *prompt" "int height" "int width"
|
|
|
|
Display a text box containing the contents of string \fBprompt\fR of dimensions
|
|
\fBheight\fR and \fBwidth\fR.
|
|
|
|
Returns 0 on success, -1 on failure.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_menu "unsigned char *title" "unsigned char *prompt" "int height" "int width" "int menu_height" "int item_no" "void *itptr" "unsigned char *result, int *ch, int *sc"
|
|
|
|
Display a menu of dimensions \fBheight\fR and \fBwidth\fR with an
|
|
optional internal menu height of \fBmenu_height\fR. The \fBitem_no\fR
|
|
and \fBitptr\fR arguments are of particular importance since they,
|
|
together, determine which of the 2 available APIs to use. To use the
|
|
older and traditional interface, \fBitem_no\fR should be a positive
|
|
integer representing the number of string pointer pairs to find in
|
|
\fBitptr\fR (which should be of type \fBchar **\fR), the strings are
|
|
expected to be in prompt and title order for each item and the
|
|
\fBresult\fR parameter is expected to point to an array where the
|
|
prompt string of the item selected will be copied. To use the newer
|
|
interface, \fBitem_no\fR should be a \fInegative\fR integer
|
|
representing the number of \fBdialogMenuItem\fR structures pointed to
|
|
by \fBitptr\fR (which should be of type \fBdialogMenuItem *\fR), one
|
|
structure per item. In the new interface, the \fBresult\fR variable
|
|
is used as a simple boolean (not a pointer) and should be NULL if
|
|
\fBitptr\fR only points to menu items and the default \fBOK\fR and
|
|
\fBCancel\fR buttons are desired. If \fBresult\fR is non-NULL, then
|
|
\fBitptr\fR is actually expected to point 2 locations \fBpast\fR the
|
|
start of the menu item list. \fBitptr\fR[-1] is then expected to
|
|
point to an item representing the \fBCancel\fR button, from which the
|
|
\fBprompt\fR and \fBfire\fR actions are used to override the default
|
|
behavior, and \fBitptr\fR[-2] to the same for the \fBOK\fR button.
|
|
|
|
Using either API behavior, the \fBch\fR and \fBsc\fR values may be passed in to preserve current
|
|
item selection and scroll position values across calls.
|
|
|
|
Returns 0 on success, 1 on Cancel and -1 on failure or ESC.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_checklist "unsigned char *title" "unsigned char *prompt" "int height" "int width" "int m_height" "int item_no" "void *itptr" "unsigned char *result"
|
|
|
|
Display a menu of dimensions \fBheight\fR and \fBwidth\fR with an
|
|
optional internal menu height of \fBmenu_height\fR. The \fBitem_no\fR
|
|
and \fBitptr\fR arguments are of particular importance since they,
|
|
together, determine which of the 2 available APIs to use. To use the
|
|
older and traditional interface, \fBitem_no\fR should be a positive
|
|
integer representing the number of string pointer tuples to find in
|
|
\fBitptr\fR (which should be of type \fBchar **\fR), the strings are
|
|
expected to be in prompt, title and state ("on" or "off") order for
|
|
each item and the \fBresult\fR parameter is expected to point to an
|
|
array where the prompt string of the item(s) selected will be
|
|
copied. To use the newer interface, \fBitem_no\fR should be a
|
|
\fInegative\fR integer representing the number of \fBdialogMenuItem\fR
|
|
structures pointed to by \fBitptr\fR (which should be of type
|
|
\fBdialogMenuItem *\fR), one structure per item. In the new interface,
|
|
the \fBresult\fR variable is used as a simple boolean (not a pointer)
|
|
and should be NULL if \fBitptr\fR only points to menu items and the
|
|
default \fBOK\fR and \fBCancel\fR buttons are desired. If
|
|
\fBresult\fR is non-NULL, then \fBitptr\fR is actually expected to
|
|
point 2 locations \fBpast\fR the start of the menu item list.
|
|
\fBitptr\fR[-1] is then expected to point to an item representing the
|
|
\fBCancel\fR button, from which the \fBprompt\fR and \fBfire\fR
|
|
actions are used to override the default behavior, and \fBitptr\fR[-2]
|
|
to the same for the \fBOK\fR button.
|
|
|
|
In the standard API model, the menu supports the selection of multiple items,
|
|
each of which is marked with an `X' character to denote selection. When
|
|
the OK button is selected, the prompt values for all items selected are
|
|
concatenated into the \fBresult\fR string.
|
|
|
|
In the new API model, it is not actually necessary to preserve
|
|
"checklist" semantics at all since practically everything about how
|
|
each item is displayed or marked as "selected" is fully configurable.
|
|
You could have a single checklist menu that actually contained a group
|
|
of items with "radio" behavior, "checklist" behavior and standard menu
|
|
item behavior. The only reason to call \fBdialog_checklist\fR over
|
|
\fBdialog_radiolist\fR in the new API model is to inherit the base
|
|
behavior, you're no longer constrained by it.
|
|
|
|
Returns 0 on success, 1 on Cancel and -1 on failure or ESC.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_radiolist "unsigned char *title" "unsigned char *prompt" "int height" "int width" "int m_height" "int item_no" "void *it" "unsigned char *result"
|
|
|
|
Display a menu of dimensions \fBheight\fR and \fBwidth\fR with an
|
|
optional internal menu height of \fBmenu_height\fR. The \fBitem_no\fR
|
|
and \fBitptr\fR arguments are of particular importance since they,
|
|
together, determine which of the 2 available APIs to use. To use the
|
|
older and traditional interface, \fBitem_no\fR should be a positive
|
|
integer representing the number of string pointer tuples to find in
|
|
\fBitptr\fR (which should be of type \fBchar **\fR), the strings are
|
|
expected to be in prompt, title and state ("on" or "off") order for
|
|
each item and the \fBresult\fR parameter is expected to point to an
|
|
array where the prompt string of the item(s) selected will be
|
|
copied. To use the newer interface, \fBitem_no\fR should be a
|
|
\fInegative\fR integer representing the number of \fBdialogMenuItem\fR
|
|
structures pointed to by \fBitptr\fR (which should be of type
|
|
\fBdialogMenuItem *\fR), one structure per item. In the new interface,
|
|
the \fBresult\fR variable is used as a simple boolean (not a pointer)
|
|
and should be NULL if \fBitptr\fR only points to menu items and the
|
|
default \fBOK\fR and \fBCancel\fR buttons are desired. If
|
|
\fBresult\fR is non-NULL, then \fBitptr\fR is actually expected to
|
|
point 2 locations \fBpast\fR the start of the menu item list.
|
|
\fBitptr\fR[-1] is then expected to point to an item representing the
|
|
\fBCancel\fR button, from which the \fBprompt\fR and \fBfire\fR
|
|
actions are used to override the default behavior, and \fBitptr\fR[-2]
|
|
does the same for the traditional \fBOK\fR button.
|
|
|
|
In the standard API model, the menu supports the selection of only one
|
|
of multiple items, the currently active item marked with an `*'
|
|
character to denote selection. When the OK button is selected, the
|
|
prompt value for this item is copied into the \fBresult\fR string.
|
|
|
|
In the new API model, it is not actually necessary to preserve
|
|
"radio button" semantics at all since practically everything about how
|
|
each item is displayed or marked as "selected" is fully configurable.
|
|
You could have a single radio menu that actually contained a group
|
|
of items with "checklist" behavior, "radio" behavior and standard menu
|
|
item behavior. The only reason to call \fBdialog_radiolist\fR over
|
|
\fBdialog_checklistlist\fR in the new API model is to inherit the base
|
|
behavior.
|
|
|
|
Returns 0 on success, 1 on Cancel and -1 on failure or ESC.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_inputbox "unsigned char *title" "unsigned char *prompt" "int height" "int width" "unsigned char *result"
|
|
|
|
Displays a single-line text input field in a box displaying \fBtitle\fR and \fBprompt\fR
|
|
of dimensions \fBheight\fR and \fBwidth\fR. The field entered is stored in \fBresult\fR.
|
|
|
|
Returns 0 on success, -1 on failure or ESC.
|
|
|
|
.Ft "char *"
|
|
.Fn dialog_fselect "char *dir" "char *fmask"
|
|
|
|
Brings up a file selector dialog starting at \fBdir\fR and showing only those file names
|
|
matching \fBfmask\fR.
|
|
|
|
Returns filename selected or NULL.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_dselect "char *dir" "char *fmask"
|
|
|
|
Brings up a directory selector dialog starting at \fBdir\fR and showing only those directory names
|
|
matching \fBfmask\fR.
|
|
|
|
Returns directory name selected or NULL.
|
|
|
|
.Ft "void"
|
|
.Fn dialog_notify "char *msg"
|
|
|
|
Bring up a generic "hey, you!" notifier dialog containing \fBmsg\fR.
|
|
|
|
.Ft "int"
|
|
.Fn dialog_mesgbox "unsigned char *title" "unsigned char *prompt" "int height" "int width"
|
|
|
|
Like a notifier dialog, but with more control over \fBtitle\fR, \fBprompt\fR, \fBwidth\fR and
|
|
\fBheight\fR. This object will also wait for user confirmation, unlike \fBdialog_notify\fR.
|
|
|
|
Returns 0 on success, -1 on failure.
|
|
|
|
.Ft "void"
|
|
.Fn dialog_gauge "char *title" "char *prompt" "int y" "int x" "int height" "int width" "int perc"
|
|
|
|
Display a horizontal bar-graph style gauge. A value of \fB100\fR for \fBperc\fR constitutes
|
|
a full gauge, a value of \fB0\fR an empty one.
|
|
|
|
.Ft "void"
|
|
.Fn use_helpfile "char *helpfile"
|
|
|
|
For any menu supporting context sensitive help, invoke the text box
|
|
object on this file whenever the \fBF1\fR key is pressed.
|
|
|
|
|
|
.Ft "void"
|
|
.Fn use_helpline "char *helpline"
|
|
|
|
Display this line of helpful text below any menu being displayed.
|
|
|
|
.Ft "char *"
|
|
.Fn get_helpline "void"
|
|
|
|
Get the current value of the helpful text line.
|
|
|
|
.Ft "void"
|
|
.Fn dialog_clear_norefresh "void"
|
|
|
|
Clear the screen back to the dialog background color, but don't refresh the contents
|
|
just yet.
|
|
|
|
.Ft "void"
|
|
.Fn dialog_clear "void"
|
|
|
|
Clear the screen back to the dialog background color immediately.
|
|
|
|
.Ft "void"
|
|
.Fn dialog_update "void"
|
|
|
|
Do any pending screen refreshes now.
|
|
|
|
.Ft "void"
|
|
.Fn init_dialog "void"
|
|
|
|
Initialize the dialog library (call this routine before any other dialog API calls).
|
|
|
|
.Ft "void"
|
|
.Fn end_dialog "void"
|
|
|
|
Shut down the dialog library (call this if you need to get back to sanity).
|
|
|
|
.Sh SEE ALSO
|
|
.Xr dialog 1 ,
|
|
.Xr ncurses 3
|
|
|
|
.Sh AUTHORS
|
|
The primary author would appear to be Savio Lam <lam836@cs.cuhk.hk> with contributions over
|
|
the years by Stuart Herbert <S.Herbert@sheffield.ac.uk>, Marc van Kempen <wmbfmk@urc.tue.nl>,
|
|
Andrey Chernov <ache@freebsd.org> and Jordan Hubbard <jkh@freebsd.org>.
|
|
|
|
.Sh HISTORY
|
|
These functions appeared in
|
|
.Em FreeBSD-2.0
|
|
as the \fBdialog(1)\fR command and were soon split into library
|
|
and command by Andrey Chernov. Marc van Kempen implemented most of the
|
|
extra controls and objects and Jordan Hubbard added the dialogMenuItem
|
|
renovations and this man page.
|
|
.Sh BUGS
|
|
Sure!
|