273 lines
7.0 KiB
Plaintext
273 lines
7.0 KiB
Plaintext
.\"***************************************************************************
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.\" Copyright (c) 1998,2002 Free Software Foundation, Inc. *
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.\" *
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.\" Permission is hereby granted, free of charge, to any person obtaining a *
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.\" copy of this software and associated documentation files (the *
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.\" "Software"), to deal in the Software without restriction, including *
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.\" without limitation the rights to use, copy, modify, merge, publish, *
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.\" distribute, distribute with modifications, sublicense, and/or sell *
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.\" copies of the Software, and to permit persons to whom the Software is *
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.\" furnished to do so, subject to the following conditions: *
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.\" *
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.\" The above copyright notice and this permission notice shall be included *
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.\" in all copies or substantial portions of the Software. *
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.\" *
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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.\" *
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.\" Except as contained in this notice, the name(s) of the above copyright *
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.\" holders shall not be used in advertising or otherwise to promote the *
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.\" sale, use or other dealings in this Software without prior written *
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.\" authorization. *
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.\"***************************************************************************
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.\"
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.\" $Id: form_driver.3x,v 1.9 2002/02/16 22:39:52 tom Exp $
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.TH form_driver 3X ""
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.SH NAME
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\fBform_driver\fR - command-processing loop of the form system
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.SH SYNOPSIS
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\fB#include <form.h>\fR
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.br
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int form_driver(FORM *form, int c);
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.br
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.SH DESCRIPTION
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Once a form has been posted (displayed), you should funnel input events to it
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through \fBform_driver\fR. This routine has two major input cases; either
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the input is a form navigation request or it's a printable ASCII character.
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The form driver requests are as follows:
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.TP 5
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REQ_NEXT_PAGE
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Move to the next page.
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.TP 5
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REQ_PREV_PAGE
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Move to the previous page.
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.TP 5
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REQ_FIRST_PAGE
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Move to the first page.
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.TP 5
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REQ_LAST_PAGE
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Move to the last field.
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.TP 5
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REQ_NEXT_FIELD
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Move to the next field.
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.TP 5
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REQ_PREV_FIELD
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Move to the previous field.
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.TP 5
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REQ_FIRST_FIELD
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Move to the first field.
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.TP 5
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REQ_LAST_FIELD
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Move to the last field.
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.TP 5
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REQ_SNEXT_FIELD
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Move to the sorted next field.
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.TP 5
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REQ_SPREV_FIELD
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Move to the sorted previous field.
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.TP 5
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REQ_SFIRST_FIELD
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Move to the sorted first field.
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.TP 5
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REQ_SLAST_FIELD
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Move to the sorted last field.
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.TP 5
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REQ_LEFT_FIELD
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Move left to a field.
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.TP 5
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REQ_RIGHT_FIELD
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Move right to a field.
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.TP 5
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REQ_UP_FIELD
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Move up to a field.
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.TP 5
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REQ_DOWN_FIELD
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Move down to a field.
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.TP 5
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REQ_NEXT_CHAR
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Move to the next char.
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.TP 5
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REQ_PREV_CHAR
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Move to the previous char.
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.TP 5
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REQ_NEXT_LINE
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Move to the next line.
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.TP 5
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REQ_PREV_LINE
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Move to the previous line.
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.TP 5
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REQ_NEXT_WORD
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Move to the next word.
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.TP 5
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REQ_PREV_WORD
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Move to the previous word.
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.TP 5
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REQ_BEG_FIELD
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Move to the beginning of the field.
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.TP 5
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REQ_END_FIELD
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Move to the end of the field.
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.TP 5
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REQ_BEG_LINE
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Move to the beginning of the line.
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.TP 5
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REQ_END_LINE
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Move to the end of the line.
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.TP 5
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REQ_LEFT_CHAR
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Move left in the field.
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.TP 5
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REQ_RIGHT_CHAR
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Move right in the field.
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.TP 5
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REQ_UP_CHAR
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Move up in the field.
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.TP 5
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REQ_DOWN_CHAR
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Move down in the field.
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.TP 5
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REQ_NEW_LINE
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Insert or overlay a new line.
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.TP 5
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REQ_INS_CHAR
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Insert a blank at the cursor.
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.TP 5
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REQ_INS_LINE
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Insert a blank line at the cursor.
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.TP 5
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REQ_DEL_CHAR
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Delete character at the cursor.
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.TP 5
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REQ_DEL_PREV
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Delete character before the cursor.
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.TP 5
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REQ_DEL_LINE
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Delete line at the cursor.
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.TP 5
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REQ_DEL_WORD
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Delete blank-delimited word at the cursor.
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.TP 5
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REQ_CLR_EOL
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Clear to end of line from cursor.
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.TP 5
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REQ_CLR_EOF
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Clear to end of field from cursor.
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.TP 5
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REQ_CLR_FIELD
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Clear the entire field.
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.TP 5
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REQ_OVL_MODE
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Enter overlay mode.
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.TP 5
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REQ_INS_MODE
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Enter insert mode.
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.TP 5
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REQ_SCR_FLINE
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Scroll the field forward a line.
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.TP 5
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REQ_SCR_BLINE
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Scroll the field backward a line.
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.TP 5
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REQ_SCR_FPAGE
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Scroll the field forward a page.
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.TP 5
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REQ_SCR_BPAGE
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Scroll the field backward a page.
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.TP 5
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REQ_SCR_FHPAGE
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Scroll the field forward half a page.
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.TP 5
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REQ_SCR_BHPAGE
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Scroll the field backward half a page.
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.TP 5
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REQ_SCR_FCHAR
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Scroll the field forward a character.
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.TP 5
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REQ_SCR_BCHAR
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Scroll the field backward a character.
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.TP 5
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REQ_SCR_HFLINE
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Horizontal scroll the field forward a line.
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.TP 5
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REQ_SCR_HBLINE
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Horizontal scroll the field backward a line.
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.TP 5
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REQ_SCR_HFHALF
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Horizontal scroll the field forward half a line.
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.TP 5
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REQ_SCR_HBHALF
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Horizontal scroll the field backward half a line.
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.TP
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REQ_VALIDATION
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Validate field.
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.TP
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REQ_NEXT_CHOICE
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Display next field choice.
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.TP
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REQ_PREV_CHOICE
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Display previous field choice.
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.PP
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If the second argument is a printable ASCII character, the driver places it
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in the current position in the current field. If it is one of the forms
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requests listed above, that request is executed.
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.PP
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If the second argument is neither printable ASCII nor one of the above
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pre-defined form requests, the driver assumes it is an application-specific
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command and returns \fBE_UNKNOWN_COMMAND\fR. Application-defined commands
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should be defined relative to \fBMAX_COMMAND\fR, the maximum value of these
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pre-defined requests.
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.SH RETURN VALUE
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\fBform_driver\fR return one of the following error codes:
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.TP 5
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\fBE_OK\fR
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The routine succeeded.
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.TP 5
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\fBE_SYSTEM_ERROR\fR
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System error occurred (see \fBerrno\fR).
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.TP 5
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\fBE_BAD_ARGUMENT\fR
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Routine detected an incorrect or out-of-range argument.
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.TP 5
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\fBE_BAD_STATE\fR
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Routine was called from an initialization or termination function.
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.TP 5
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\fBE_NOT_POSTED\fR
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The form has not been posted.
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.TP 5
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\fBE_UNKNOWN_COMMAND\fR
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The form driver code saw an unknown request code.
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.TP 5
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\fBE_INVALID_FIELD\fR
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Contents of field is invalid.
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.TP 5
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\fBE_REQUEST_DENIED\fR
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The form driver could not process the request.
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.SH SEE ALSO
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\fBcurses\fR(3X), \fBform\fR(3X).
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.SH NOTES
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The header file \fB<form.h>\fR automatically includes the header files
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\fB<curses.h>\fR.
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.SH PORTABILITY
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These routines emulate the System V forms library. They were not supported on
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Version 7 or BSD versions.
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.SH AUTHORS
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Juergen Pfeifer. Manual pages and adaptation for new curses by Eric
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S. Raymond.
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.\"#
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.\"# The following sets edit modes for GNU EMACS
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.\"# Local Variables:
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.\"# mode:nroff
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.\"# fill-column:79
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.\"# End:
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