diff options
Diffstat (limited to 'man/form_driver.3x')
| -rw-r--r-- | man/form_driver.3x | 321 |
1 files changed, 130 insertions, 191 deletions
diff --git a/man/form_driver.3x b/man/form_driver.3x index 67a986b006ba..3b8308a92748 100644 --- a/man/form_driver.3x +++ b/man/form_driver.3x @@ -1,5 +1,5 @@ .\"*************************************************************************** -.\" Copyright (c) 1998-2008,2010 Free Software Foundation, Inc. * +.\" Copyright (c) 1998-2018,2019 Free Software Foundation, Inc. * .\" * .\" Permission is hereby granted, free of charge, to any person obtaining a * .\" copy of this software and associated documentation files (the * @@ -26,215 +26,146 @@ .\" authorization. * .\"*************************************************************************** .\" -.\" $Id: form_driver.3x,v 1.22 2010/12/04 18:38:55 tom Exp $ +.\" $Id: form_driver.3x,v 1.32 2019/01/20 20:31:42 tom Exp $ .TH form_driver 3X "" .de bP -.IP \(bu 4 +.ie n .IP \(bu 4 +.el .IP \(bu 2 .. .SH NAME -\fBform_driver\fR \- command-processing loop of the form system +\fBform_driver\fR, +\fBform_driver_w\fR \- command-processing loop of the form system .SH SYNOPSIS \fB#include <form.h>\fR .br -int form_driver(FORM *form, int c); +\fBint form_driver(FORM *\fP\fIform\fP\fB, int \fP\fIc\fP\fB);\fP +.br +\fBint form_driver_w(FORM *\fP\fIform\fP\fB, int \fP\fIc\fP\fB, wchar_t \fP\fIwch\fP\fB);\fP .br .SH DESCRIPTION +.SS form_driver Once a form has been posted (displayed), you should funnel input events to it through \fBform_driver\fR. This routine has three major input cases: .bP The input is a form navigation request. Navigation request codes are constants defined in \fB<form.h>\fP, -which are distinct from the key- and character codes returned by \fBwgetch\fP. +which are distinct from the key- and character codes returned +by \fBwgetch\fP(3X). .bP The input is a printable character. Printable characters (which must be positive, less than 256) are checked according to the program's locale settings. .bP The input is the KEY_MOUSE special key associated with an mouse event. +.SS form_driver_w +.PP +This extension simplifies the use of the forms library using wide characters. +The input is either a key code (a request) or a wide character +returned by \fBget_wch\fP(3X). +The type must be passed as well, +to enable the library to determine whether the parameter +is a wide character or a request. +.SS Form-driver requests .PP The form driver requests are as follows: -.TP 5 -REQ_NEXT_PAGE -Move to the next page. -.TP 5 -REQ_PREV_PAGE -Move to the previous page. -.TP 5 -REQ_FIRST_PAGE -Move to the first page. -.TP 5 -REQ_LAST_PAGE -Move to the last field. -.sp -.TP 5 -REQ_NEXT_FIELD -Move to the next field. -.TP 5 -REQ_PREV_FIELD -Move to the previous field. -.TP 5 -REQ_FIRST_FIELD -Move to the first field. -.TP 5 -REQ_LAST_FIELD -Move to the last field. -.TP 5 -REQ_SNEXT_FIELD -Move to the sorted next field. -.TP 5 -REQ_SPREV_FIELD -Move to the sorted previous field. -.TP 5 -REQ_SFIRST_FIELD -Move to the sorted first field. -.TP 5 -REQ_SLAST_FIELD -Move to the sorted last field. -.TP 5 -REQ_LEFT_FIELD -Move left to a field. -.TP 5 -REQ_RIGHT_FIELD -Move right to a field. -.TP 5 -REQ_UP_FIELD -Move up to a field. -.TP 5 -REQ_DOWN_FIELD -Move down to a field. -.sp -.TP 5 -REQ_NEXT_CHAR -Move to the next char. -.TP 5 -REQ_PREV_CHAR -Move to the previous char. -.TP 5 -REQ_NEXT_LINE -Move to the next line. -.TP 5 -REQ_PREV_LINE -Move to the previous line. -.TP 5 -REQ_NEXT_WORD -Move to the next word. -.TP 5 -REQ_PREV_WORD -Move to the previous word. -.TP 5 -REQ_BEG_FIELD -Move to the beginning of the field. -.TP 5 -REQ_END_FIELD -Move to the end of the field. -.TP 5 -REQ_BEG_LINE -Move to the beginning of the line. -.TP 5 -REQ_END_LINE -Move to the end of the line. -.TP 5 -REQ_LEFT_CHAR -Move left in the field. -.TP 5 -REQ_RIGHT_CHAR -Move right in the field. -.TP 5 -REQ_UP_CHAR -Move up in the field. -.TP 5 -REQ_DOWN_CHAR -Move down in the field. -.sp -.TP 5 -REQ_NEW_LINE -Insert or overlay a new line. -.TP 5 -REQ_INS_CHAR -Insert a blank at the cursor. -.TP 5 -REQ_INS_LINE -Insert a blank line at the cursor. -.TP 5 -REQ_DEL_CHAR -Delete character at the cursor. -.TP 5 -REQ_DEL_PREV -Delete character before the cursor. -.TP 5 -REQ_DEL_LINE -Delete line at the cursor. -.TP 5 -REQ_DEL_WORD -Delete blank-delimited word at the cursor. -.TP 5 -REQ_CLR_EOL -Clear to end of line from cursor. -.TP 5 -REQ_CLR_EOF -Clear to end of field from cursor. -.TP 5 -REQ_CLR_FIELD -Clear the entire field. -.TP 5 -REQ_OVL_MODE -Enter overlay mode. -.TP 5 -REQ_INS_MODE -Enter insert mode. -.sp -.TP 5 -REQ_SCR_FLINE -Scroll the field forward a line. -.TP 5 -REQ_SCR_BLINE -Scroll the field backward a line. -.TP 5 -REQ_SCR_FPAGE -Scroll the field forward a page. -.TP 5 -REQ_SCR_BPAGE -Scroll the field backward a page. -.TP 5 -REQ_SCR_FHPAGE -Scroll the field forward half a page. -.TP 5 -REQ_SCR_BHPAGE -Scroll the field backward half a page. -.sp -.TP 5 -REQ_SCR_FCHAR -Scroll the field forward a character. -.TP 5 -REQ_SCR_BCHAR -Scroll the field backward a character. -.TP 5 -REQ_SCR_HFLINE -Horizontal scroll the field forward a line. -.TP 5 -REQ_SCR_HBLINE -Horizontal scroll the field backward a line. -.TP 5 -REQ_SCR_HFHALF -Horizontal scroll the field forward half a line. -.TP 5 -REQ_SCR_HBHALF -Horizontal scroll the field backward half a line. -.sp -.TP -REQ_VALIDATION -Validate field. -.TP -REQ_NEXT_CHOICE -Display next field choice. -.TP -REQ_PREV_CHOICE -Display previous field choice. +.TS +l l +_ _ +l l. +\fIName\fR \fIDescription\fR +REQ_BEG_FIELD Move to the beginning of the field. +REQ_BEG_LINE Move to the beginning of the line. +REQ_CLR_EOF Clear to end of field from cursor. +REQ_CLR_EOL Clear to end of line from cursor. +REQ_CLR_FIELD Clear the entire field. +REQ_DEL_CHAR Delete character at the cursor. +REQ_DEL_LINE Delete line at the cursor. +REQ_DEL_PREV Delete character before the cursor. +REQ_DEL_WORD Delete blank-delimited word at the cursor. +REQ_DOWN_CHAR Move down in the field. +REQ_DOWN_FIELD Move down to a field. +REQ_END_FIELD Move to the end of the field. +REQ_END_LINE Move to the end of the line. +REQ_FIRST_FIELD Move to the first field. +REQ_FIRST_PAGE Move to the first page. +REQ_INS_CHAR Insert a blank at the cursor. +REQ_INS_LINE Insert a blank line at the cursor. +REQ_INS_MODE Enter insert mode. +REQ_LAST_FIELD Move to the last field. +REQ_LAST_PAGE Move to the last field. +REQ_LEFT_CHAR Move left in the field. +REQ_LEFT_FIELD Move left to a field. +REQ_NEW_LINE Insert or overlay a new line. +REQ_NEXT_CHAR Move to the next char. +REQ_NEXT_CHOICE Display next field choice. +REQ_NEXT_FIELD Move to the next field. +REQ_NEXT_LINE Move to the next line. +REQ_NEXT_PAGE Move to the next page. +REQ_NEXT_PAGE Move to the next page. +REQ_NEXT_WORD Move to the next word. +REQ_OVL_MODE Enter overlay mode. +REQ_PREV_CHAR Move to the previous char. +REQ_PREV_CHOICE Display previous field choice. +REQ_PREV_FIELD Move to the previous field. +REQ_PREV_LINE Move to the previous line. +REQ_PREV_PAGE Move to the previous page. +REQ_PREV_WORD Move to the previous word. +REQ_RIGHT_CHAR Move right in the field. +REQ_RIGHT_FIELD Move right to a field. +REQ_SCR_BCHAR Scroll the field backward a character. +REQ_SCR_BHPAGE Scroll the field backward half a page. +REQ_SCR_BLINE Scroll the field backward a line. +REQ_SCR_BPAGE Scroll the field backward a page. +REQ_SCR_FCHAR Scroll the field forward a character. +REQ_SCR_FHPAGE Scroll the field forward half a page. +REQ_SCR_FLINE Scroll the field forward a line. +REQ_SCR_FPAGE Scroll the field forward a page. +REQ_SCR_HBHALF Horizontal scroll the field backward half a line. +REQ_SCR_HBLINE Horizontal scroll the field backward a line. +REQ_SCR_HFHALF Horizontal scroll the field forward half a line. +REQ_SCR_HFLINE Horizontal scroll the field forward a line. +REQ_SFIRST_FIELD Move to the sorted first field. +REQ_SLAST_FIELD Move to the sorted last field. +REQ_SNEXT_FIELD Move to the sorted next field. +REQ_SPREV_FIELD Move to the sorted previous field. +REQ_UP_CHAR Move up in the field. +REQ_UP_FIELD Move up to a field. +REQ_VALIDATION Validate field. +.TE .PP If the second argument is a printable character, the driver places it -in the current position in the current field. If it is one of the forms +in the current position in the current field. +If it is one of the forms requests listed above, that request is executed. -.SS MOUSE HANDLING +.SS Field validation +The form library makes updates to the window associated +with form fields rather than directly to the field buffers. +.PP +The form driver provides low-level control over updates to the form fields. +The form driver also provides for validating modified fields +to ensure that the contents +meet whatever constraints an application may attach using \fBset_field_type\fP. +.PP +.PP +You can validate a field without making any changes to it using +\fBREQ_VALIDATION\fP. +The form driver also validates a field in these cases: +.bP +a call to \fBset_current_field\fP attempts to move to a different field. +.bP +a call to \fBset_current_page\fP attempts to move +to a different page of the form. +.bP +a request attempts to move to a different field. +.bP +a request attempts to move to a different page of the form. +.PP +In each case, the move fails if the field is invalid. +.PP +If the modified field is valid, the form driver copies the modified +data from the window associated with the field +to the field buffer. +.SS Mouse handling .PP If the second argument is the KEY_MOUSE special key, the associated mouse event is translated into one of the above pre-defined requests. @@ -279,9 +210,10 @@ If a translation into a request was done, \fBform_driver\fR returns the result of this request. .RE .PP -If you clicked outside the user window or the mouse event could not be translated +If you clicked outside the user window +or the mouse event could not be translated into a form request an \fBE_REQUEST_DENIED\fR is returned. -.SS APPLICATION-DEFINED COMMANDS +.SS Application-defined commands .PP If the second argument is neither printable nor one of the above pre-defined form requests, the driver assumes it is an application-specific @@ -306,11 +238,14 @@ The form has not been posted. .B E_INVALID_FIELD Contents of field is invalid. .TP 5 +.B E_NOT_CONNECTED +No fields are connected to the form. +.TP 5 .B E_REQUEST_DENIED The form driver could not process the request. .TP 5 .B E_SYSTEM_ERROR -System error occurred (see \fBerrno\fR). +System error occurred (see \fBerrno\fR(3)). .TP 5 .B E_UNKNOWN_COMMAND The form driver code saw an unknown request code. @@ -318,14 +253,18 @@ The form driver code saw an unknown request code. .SH SEE ALSO \fBcurses\fR(3X), \fBform\fR(3X), +\fBform_field_buffer\fR(3X), +\fBform_field_validation\fR(3X), +\fBform_fieldtype\fR(3X), \fBform_variables\fR(3X), \fBgetch\fR(3X). .SH NOTES The header file \fB<form.h>\fR automatically includes the header files \fB<curses.h>\fR. .SH PORTABILITY -These routines emulate the System V forms library. They were not supported on +These routines emulate the System V forms library. +They were not supported on Version 7 or BSD versions. .SH AUTHORS -Juergen Pfeifer. Manual pages and adaptation for new curses by Eric -S. Raymond. +Juergen Pfeifer. +Manual pages and adaptation for new curses by Eric S. Raymond. |