0e3d540892
This contains the full eti (panel, form, menu) extensions. bmake glue to follow. Obtained from: ftp://ftp.clark.net/pub/dickey/ncurses
824 lines
24 KiB
C++
824 lines
24 KiB
C++
// * This makes emacs happy -*-Mode: C++;-*-
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/****************************************************************************
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* Copyright (c) 1998 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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* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1997 *
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****************************************************************************/
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// $Id: cursesf.h,v 1.10 1999/05/16 17:31:42 juergen Exp $
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#ifndef _CURSESF_H
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#define _CURSESF_H
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#include <cursesp.h>
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extern "C" {
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# include <form.h>
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}
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//
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// -------------------------------------------------------------------------
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// The abstract base class for buitin and user defined Fieldtypes.
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// -------------------------------------------------------------------------
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//
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class NCursesFormField; // forward declaration
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// Class to represent builtin field types as well as C++ written new
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// fieldtypes (see classes UserDefineFieldType...
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class NCursesFieldType {
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friend class NCursesFormField;
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protected:
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FIELDTYPE* fieldtype;
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inline void OnError(int err) const THROWS(NCursesFormException) {
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if (err!=E_OK)
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THROW(new NCursesFormException (err));
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}
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NCursesFieldType(FIELDTYPE *f) : fieldtype(f) {
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}
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virtual ~NCursesFieldType() {}
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// Set the fields f fieldtype to this one.
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virtual void set(NCursesFormField& f) = 0;
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public:
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NCursesFieldType() : fieldtype((FIELDTYPE*)0) {
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}
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};
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//
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// -------------------------------------------------------------------------
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// The class representing a forms field, wrapping the lowlevel FIELD struct
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// -------------------------------------------------------------------------
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//
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class NCursesFormField {
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friend class NCursesForm;
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protected:
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FIELD *field; // lowlevel structure
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NCursesFieldType* ftype; // Associated field type
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// Error handler
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inline void OnError (int err) const THROWS(NCursesFormException) {
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if (err != E_OK)
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THROW(new NCursesFormException (err));
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}
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public:
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// Create a 'Null' field. Can be used to delimit a field list
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NCursesFormField()
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: field((FIELD*)0), ftype((NCursesFieldType*)0) {
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}
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// Create a new field
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NCursesFormField (int rows,
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int cols,
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int first_row = 0,
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int first_col = 0,
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int offscreen_rows = 0,
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int additional_buffers = 0)
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: ftype((NCursesFieldType*)0) {
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field = ::new_field(rows,cols,first_row,first_col,
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offscreen_rows, additional_buffers);
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if (!field)
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OnError(errno);
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}
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virtual ~NCursesFormField ();
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// Duplicate the field at a new position
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inline NCursesFormField* dup(int first_row, int first_col) {
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NCursesFormField* f = new NCursesFormField();
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if (!f)
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OnError(E_SYSTEM_ERROR);
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else {
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f->ftype = ftype;
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f->field = ::dup_field(field,first_row,first_col);
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if (!f->field)
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OnError(errno);
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}
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return f;
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}
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// Link the field to a new location
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inline NCursesFormField* link(int first_row, int first_col) {
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NCursesFormField* f = new NCursesFormField();
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if (!f)
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OnError(E_SYSTEM_ERROR);
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else {
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f->ftype = ftype;
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f->field = ::link_field(field,first_row,first_col);
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if (!f->field)
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OnError(errno);
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}
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return f;
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}
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// Get the lowlevel field representation
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inline FIELD* get_field() const {
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return field;
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}
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// Retrieve info about the field
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inline void info(int& rows, int& cols,
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int& first_row, int& first_col,
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int& offscreen_rows, int& additional_buffers) const {
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OnError(::field_info(field, &rows, &cols,
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&first_row, &first_col,
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&offscreen_rows, &additional_buffers));
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}
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// Retrieve info about the fields dynamic properties.
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inline void dynamic_info(int& dynamic_rows, int& dynamic_cols,
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int& max_growth) const {
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OnError(::dynamic_field_info(field, &dynamic_rows, &dynamic_cols,
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&max_growth));
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}
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// For a dynamic field you may set the maximum growth limit.
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// A zero means unlimited growth.
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inline void set_maximum_growth(int growth = 0) {
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OnError(::set_max_field(field,growth));
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}
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// Move the field to a new position
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inline void move(int row, int col) {
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OnError(::move_field(field,row,col));
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}
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// Mark the field to start a new page
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inline void new_page(bool pageFlag = FALSE) {
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OnError(::set_new_page(field,pageFlag));
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}
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// Retrieve whether or not the field starts a new page.
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inline bool is_new_page() const {
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return ::new_page(field);
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}
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// Set the justification for the field
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inline void set_justification(int just) {
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OnError(::set_field_just(field,just));
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}
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// Retrieve the fields justification
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inline int justification() const {
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return ::field_just(field);
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}
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// Set the foreground attribute for the field
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inline void set_foreground(chtype fore) {
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OnError(::set_field_fore(field,fore));
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}
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// Retrieve the fields foreground attribute
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inline chtype fore() const {
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return ::field_fore(field);
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}
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// Set the background attribute for the field
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inline void set_background(chtype back) {
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OnError(::set_field_back(field,back));
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}
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// Retrieve the fields background attribute
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inline chtype back() const {
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return ::field_back(field);
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}
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// Set the padding character for the field
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inline void set_pad_character(int pad) {
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OnError(::set_field_pad(field,pad));
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}
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// Retrieve the fields padding character
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inline int pad() const {
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return ::field_pad(field);
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}
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// Switch on the fields options
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inline void options_on (Field_Options options) {
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OnError (::field_opts_on (field, options));
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}
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// Switch off the fields options
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inline void options_off (Field_Options options) {
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OnError (::field_opts_off (field, options));
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}
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// Retrieve the fields options
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inline Field_Options options () const {
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return ::field_opts (field);
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}
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// Set the fields options
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inline void set_options (Field_Options options) {
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OnError (::set_field_opts (field, options));
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}
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// Mark the field as changed
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inline void set_changed(bool changeFlag = TRUE) {
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OnError(::set_field_status(field,changeFlag));
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}
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// Test whether or not the field is marked as changed
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inline bool changed() const {
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return ::field_status(field);
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}
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// Return the index of the field in the field array of a form
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// or -1 if the field is not associated to a form
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inline int (index)() const {
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return ::field_index(field);
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}
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// Store a value in a fields buffer. The default buffer is nr. 0
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inline void set_value(const char *val, int buffer = 0) {
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OnError(::set_field_buffer(field,buffer,val));
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}
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// Retrieve the value of a fields buffer. The defaukt buffer is nr. 0
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inline char* value(int buffer = 0) const {
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return ::field_buffer(field,buffer);
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}
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// Set the validation type of the field.
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inline void set_fieldtype(NCursesFieldType& f) {
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ftype = &f;
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f.set(*this); // A good friend may do that...
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}
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// Retrieve the validation type of the field.
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inline NCursesFieldType* fieldtype() const {
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return ftype;
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}
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};
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//
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// -------------------------------------------------------------------------
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// The class representing a form, wrapping the lowlevel FORM struct
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// -------------------------------------------------------------------------
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//
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class NCursesForm : public NCursesPanel {
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protected:
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FORM* form; // the lowlevel structure
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private:
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NCursesWindow* sub; // the subwindow object
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bool b_sub_owner; // is this our own subwindow?
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bool b_framed; // has the form a border?
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bool b_autoDelete; // Delete fields when deleting form?
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NCursesFormField** my_fields; // The array of fields for this form
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// This structure is used for the form's user data field to link the
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// FORM* to the C++ object and to provide extra space for a user pointer.
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typedef struct {
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void* m_user; // the pointer for the user's data
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const NCursesForm* m_back; // backward pointer to C++ object
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const FORM* m_owner;
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} UserHook;
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// Get the backward pointer to the C++ object from a FORM
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static inline NCursesForm* getHook(const FORM *f) {
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UserHook* hook = (UserHook*)::form_userptr(f);
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assert(hook && hook->m_owner==f);
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return (NCursesForm*)(hook->m_back);
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}
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// This are the built-in hook functions in this C++ binding. In C++ we use
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// virtual member functions (see below On_..._Init and On_..._Termination)
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// to provide this functionality in an object oriented manner.
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static void frm_init(FORM *);
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static void frm_term(FORM *);
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static void fld_init(FORM *);
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static void fld_term(FORM *);
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// Calculate FIELD* array for the menu
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FIELD** mapFields(NCursesFormField* nfields[]);
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protected:
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// internal routines
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inline void set_user(void *user) {
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UserHook* uptr = (UserHook*)::form_userptr (form);
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assert (uptr && uptr->m_back==this && uptr->m_owner==form);
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uptr->m_user = user;
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}
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inline void *get_user() {
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UserHook* uptr = (UserHook*)::form_userptr (form);
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assert (uptr && uptr->m_back==this && uptr->m_owner==form);
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return uptr->m_user;
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}
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void InitForm (NCursesFormField* Fields[],
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bool with_frame,
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bool autoDeleteFields);
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inline void OnError (int err) const THROWS(NCursesFormException) {
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if (err != E_OK)
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THROW(new NCursesFormException (err));
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}
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// this wraps the form_driver call.
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virtual int driver (int c) ;
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// 'Internal' constructor, builds an object without association to a
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// field array.
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NCursesForm( int lines,
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int cols,
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int begin_y = 0,
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int begin_x = 0)
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: NCursesPanel(lines,cols,begin_y,begin_x),
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form ((FORM*)0) {
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}
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public:
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// Create form for the default panel.
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NCursesForm (NCursesFormField* Fields[],
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bool with_frame=FALSE, // reserve space for a frame?
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bool autoDelete_Fields=FALSE) // do automatic cleanup?
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: NCursesPanel() {
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InitForm(Fields, with_frame, autoDelete_Fields);
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}
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// Create a form in a panel with the given position and size.
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NCursesForm (NCursesFormField* Fields[],
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int lines,
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int cols,
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int begin_y,
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int begin_x,
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bool with_frame=FALSE, // reserve space for a frame?
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bool autoDelete_Fields=FALSE) // do automatic cleanup?
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: NCursesPanel(lines, cols, begin_y, begin_x) {
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InitForm(Fields, with_frame, autoDelete_Fields);
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}
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virtual ~NCursesForm();
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// Set the default attributes for the form
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virtual void setDefaultAttributes();
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// Retrieve current field of the form.
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inline NCursesFormField* current_field() const {
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return my_fields[::field_index(::current_field(form))];
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}
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// Set the forms subwindow
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void setSubWindow(NCursesWindow& sub);
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// Set these fields for the form
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inline void setFields(NCursesFormField* Fields[]) {
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OnError(::set_form_fields(form,mapFields(Fields)));
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}
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// Remove the form from the screen
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inline void unpost (void) {
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OnError (::unpost_form (form));
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}
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// Post the form to the screen if flag is true, unpost it otherwise
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inline void post(bool flag = TRUE) {
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OnError (flag ? ::post_form(form) : ::unpost_form (form));
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}
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// Decorations
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inline void frame(const char *title=NULL, const char* btitle=NULL) {
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if (b_framed)
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NCursesPanel::frame(title,btitle);
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else
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OnError(E_SYSTEM_ERROR);
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}
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inline void boldframe(const char *title=NULL, const char* btitle=NULL) {
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if (b_framed)
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NCursesPanel::boldframe(title,btitle);
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else
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OnError(E_SYSTEM_ERROR);
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}
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inline void label(const char *topLabel, const char *bottomLabel) {
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if (b_framed)
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NCursesPanel::label(topLabel,bottomLabel);
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else
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OnError(E_SYSTEM_ERROR);
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}
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// -----
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// Hooks
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// -----
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// Called after the form gets repositioned in its window.
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// This is especially true if the form is posted.
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virtual void On_Form_Init();
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// Called before the form gets repositioned in its window.
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// This is especially true if the form is unposted.
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virtual void On_Form_Termination();
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// Called after the field became the current field
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virtual void On_Field_Init(NCursesFormField& field);
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// Called before this field is left as current field.
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virtual void On_Field_Termination(NCursesFormField& field);
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// Calculate required window size for the form.
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void scale(int& rows, int& cols) const {
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OnError(::scale_form(form,&rows,&cols));
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}
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// Retrieve number of fields in the form.
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int count() const {
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return ::field_count(form);
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}
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// Make the page the current page of the form.
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void set_page(int page) {
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OnError(::set_form_page(form,page));
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}
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// Retrieve current page number
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int page() const {
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return ::form_page(form);
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}
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// Switch on the forms options
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inline void options_on (Form_Options options) {
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OnError (::form_opts_on (form, options));
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}
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// Switch off the forms options
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inline void options_off (Form_Options options) {
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OnError (::form_opts_off (form, options));
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}
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// Retrieve the forms options
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inline Form_Options options () const {
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return ::form_opts (form);
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}
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// Set the forms options
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inline void set_options (Form_Options options) {
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OnError (::set_form_opts (form, options));
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}
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// Are there more data in the current field after the data shown
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inline bool data_ahead() const {
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return ::data_ahead(form);
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}
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// Are there more data in the current field before the data shown
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inline bool data_behind() const {
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return ::data_behind(form);
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}
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// Position the cursor to the current field
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inline void position_cursor () {
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OnError (::pos_form_cursor (form));
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}
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// Set the current field
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inline void set_current(NCursesFormField& F) {
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OnError (::set_current_field(form, F.field));
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}
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// Provide a default key virtualization. Translate the keyboard
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// code c into a form request code.
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// The default implementation provides a hopefully straightforward
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// mapping for the most common keystrokes and form requests.
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virtual int virtualize(int c);
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// Operators
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inline NCursesFormField* operator[](int i) const {
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if ( (i < 0) || (i >= ::field_count (form)) )
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OnError (E_BAD_ARGUMENT);
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return my_fields[i];
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}
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// Perform the menu's operation
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// Return the field where you left the form.
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virtual NCursesFormField* operator()(void);
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// Exception handlers. The default is a Beep.
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virtual void On_Request_Denied(int c) const;
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virtual void On_Invalid_Field(int c) const;
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virtual void On_Unknown_Command(int c) const;
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};
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//
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// -------------------------------------------------------------------------
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// This is the typical C++ typesafe way to allow to attach
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// user data to a field of a form. Its assumed that the user
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// data belongs to some class T. Use T as template argument
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// to create a UserField.
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// -------------------------------------------------------------------------
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template<class T> class NCursesUserField : public NCursesFormField
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{
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public:
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NCursesUserField (int rows,
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int cols,
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int first_row = 0,
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int first_col = 0,
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const T* p_UserData = (T*)0,
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int offscreen_rows = 0,
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int additional_buffers = 0)
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: NCursesFormField (rows, cols,
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first_row, first_col,
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offscreen_rows, additional_buffers) {
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if (field)
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OnError(::set_field_userptr(field,(void *)p_UserData));
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}
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virtual ~NCursesUserField() {};
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inline const T* UserData (void) const {
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return (const T*)::field_userptr (field);
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}
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inline virtual void setUserData(const T* p_UserData) {
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if (field)
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OnError (::set_field_userptr (field, (void *)p_UserData));
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}
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};
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//
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// -------------------------------------------------------------------------
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// The same mechanism is used to attach user data to a form
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// -------------------------------------------------------------------------
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//
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template<class T> class NCursesUserForm : public NCursesForm
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{
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protected:
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// 'Internal' constructor, builds an object without association to a
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// field array.
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NCursesUserForm( int lines,
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int cols,
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int begin_y = 0,
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int begin_x = 0,
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const T* p_UserData = (T*)0)
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: NCursesForm(lines,cols,begin_y,begin_x) {
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if (form)
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set_user ((void *)p_UserData);
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}
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public:
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NCursesUserForm (NCursesFormField Fields[],
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bool with_frame=FALSE,
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bool autoDelete_Fields=FALSE)
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: NCursesForm (Fields, with_frame, autoDelete_Fields) {
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};
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NCursesUserForm (NCursesFormField Fields[],
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const T* p_UserData = (T*)0,
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bool with_frame=FALSE,
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bool autoDelete_Fields=FALSE)
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: NCursesForm (Fields, with_frame, autoDelete_Fields) {
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if (form)
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set_user ((void *)p_UserData);
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};
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NCursesUserForm (NCursesFormField Fields[],
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int lines,
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int cols,
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int begin_y = 0,
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int begin_x = 0,
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const T* p_UserData = (T*)0,
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bool with_frame=FALSE,
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bool autoDelete_Fields=FALSE)
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: NCursesForm (Fields, lines, cols, begin_y, begin_x,
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with_frame, autoDelete_Fields) {
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if (form)
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set_user ((void *)p_UserData);
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};
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virtual ~NCursesUserForm() {
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};
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inline T* UserData (void) const {
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return (T*)get_user ();
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};
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inline virtual void setUserData (const T* p_UserData) {
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if (form)
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set_user ((void *)p_UserData);
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}
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};
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//
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// -------------------------------------------------------------------------
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// Builtin Fieldtypes
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// -------------------------------------------------------------------------
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//
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class Alpha_Field : public NCursesFieldType {
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private:
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int min_field_width;
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void set(NCursesFormField& f) {
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OnError(::set_field_type(f.get_field(),fieldtype,min_field_width));
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}
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public:
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Alpha_Field(int width)
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: NCursesFieldType(TYPE_ALPHA),
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min_field_width(width) {
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}
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};
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class Alphanumeric_Field : public NCursesFieldType {
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private:
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int min_field_width;
|
|
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void set(NCursesFormField& f) {
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OnError(::set_field_type(f.get_field(),fieldtype,min_field_width));
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}
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public:
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Alphanumeric_Field(int width)
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: NCursesFieldType(TYPE_ALNUM),
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min_field_width(width) {
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}
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};
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class Integer_Field : public NCursesFieldType {
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private:
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int precision;
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long lower_limit, upper_limit;
|
|
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void set(NCursesFormField& f) {
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OnError(::set_field_type(f.get_field(),fieldtype,
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precision,lower_limit,upper_limit));
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}
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|
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public:
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Integer_Field(int prec, long low=0L, long high=0L)
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: NCursesFieldType(TYPE_INTEGER),
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precision(prec), lower_limit(low), upper_limit(high) {
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}
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};
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|
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class Numeric_Field : public NCursesFieldType {
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private:
|
|
int precision;
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double lower_limit, upper_limit;
|
|
|
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void set(NCursesFormField& f) {
|
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OnError(::set_field_type(f.get_field(),fieldtype,
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precision,lower_limit,upper_limit));
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|
}
|
|
|
|
public:
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Numeric_Field(int prec, double low=0.0, double high=0.0)
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: NCursesFieldType(TYPE_NUMERIC),
|
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precision(prec), lower_limit(low), upper_limit(high) {
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}
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};
|
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|
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class Regular_Expression_Field : public NCursesFieldType {
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private:
|
|
char* regex;
|
|
|
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void set(NCursesFormField& f) {
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OnError(::set_field_type(f.get_field(),fieldtype,regex));
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|
}
|
|
|
|
public:
|
|
Regular_Expression_Field(const char *expr)
|
|
: NCursesFieldType(TYPE_REGEXP) {
|
|
regex = new char[1+::strlen(expr)];
|
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(strcpy)(regex,expr);
|
|
}
|
|
|
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~Regular_Expression_Field() {
|
|
delete[] regex;
|
|
}
|
|
};
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|
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class Enumeration_Field : public NCursesFieldType {
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private:
|
|
char** list;
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int case_sensitive;
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int non_unique_matches;
|
|
|
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void set(NCursesFormField& f) {
|
|
OnError(::set_field_type(f.get_field(),fieldtype,
|
|
list,case_sensitive,non_unique_matches));
|
|
}
|
|
public:
|
|
Enumeration_Field(char* enums[],
|
|
bool case_sens=FALSE,
|
|
bool non_unique=FALSE)
|
|
: NCursesFieldType(TYPE_ENUM),
|
|
list(enums),
|
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case_sensitive(case_sens?-1:0),
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non_unique_matches(non_unique?-1:0) {
|
|
}
|
|
};
|
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|
|
class IPV4_Address_Field : public NCursesFieldType {
|
|
private:
|
|
void set(NCursesFormField& f) {
|
|
OnError(::set_field_type(f.get_field(),fieldtype));
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|
}
|
|
|
|
public:
|
|
IPV4_Address_Field() : NCursesFieldType(TYPE_IPV4) {
|
|
}
|
|
};
|
|
//
|
|
// -------------------------------------------------------------------------
|
|
// Abstract base class for User-Defined Fieldtypes
|
|
// -------------------------------------------------------------------------
|
|
//
|
|
class UserDefinedFieldType : public NCursesFieldType {
|
|
friend class UDF_Init; // Internal helper to set up statics
|
|
private:
|
|
// For all C++ defined fieldtypes we need only one generic lowlevel
|
|
// FIELDTYPE* element.
|
|
static FIELDTYPE* generic_fieldtype;
|
|
|
|
protected:
|
|
// This are the functions required by the low level libforms functions
|
|
// to construct a fieldtype.
|
|
static bool fcheck(FIELD *, const void*);
|
|
static bool ccheck(int c, const void *);
|
|
static void* makearg(va_list*);
|
|
|
|
void set(NCursesFormField& f) {
|
|
OnError(::set_field_type(f.get_field(),fieldtype,&f));
|
|
}
|
|
|
|
protected:
|
|
// Redefine this function to do a field validation. The argument
|
|
// is a reference to the field you should validate.
|
|
virtual bool field_check(NCursesFormField& f) = 0;
|
|
|
|
// Redefine this function to do a character validation. The argument
|
|
// is the character to be validated.
|
|
virtual bool char_check (int c) = 0;
|
|
|
|
public:
|
|
UserDefinedFieldType() : NCursesFieldType(generic_fieldtype) {
|
|
}
|
|
};
|
|
//
|
|
// -------------------------------------------------------------------------
|
|
// Abstract base class for User-Defined Fieldtypes with Choice functions
|
|
// -------------------------------------------------------------------------
|
|
//
|
|
class UserDefinedFieldType_With_Choice : public UserDefinedFieldType {
|
|
friend class UDF_Init; // Internal helper to set up statics
|
|
private:
|
|
// For all C++ defined fieldtypes with choice functions we need only one
|
|
// generic lowlevel FIELDTYPE* element.
|
|
static FIELDTYPE* generic_fieldtype_with_choice;
|
|
|
|
// This are the functions required by the low level libforms functions
|
|
// to construct a fieldtype with choice functions.
|
|
static bool next_choice(FIELD*, const void *);
|
|
static bool prev_choice(FIELD*, const void *);
|
|
|
|
protected:
|
|
// Redefine this function to do the retrieval of the next choice value.
|
|
// The argument is a reference to the field tobe examined.
|
|
virtual bool next (NCursesFormField& f) = 0;
|
|
|
|
// Redefine this function to do the retrieval of the previous choice value.
|
|
// The argument is a reference to the field tobe examined.
|
|
virtual bool previous(NCursesFormField& f) = 0;
|
|
|
|
public:
|
|
UserDefinedFieldType_With_Choice() {
|
|
fieldtype = generic_fieldtype_with_choice;
|
|
}
|
|
};
|
|
|
|
#endif // _CURSESF_H
|
|
|