531 lines
14 KiB
C
531 lines
14 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021 Alfonso Sabato Siciliano
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <ctype.h>
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#ifdef PORTNCURSES
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#include <ncurses/form.h>
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#else
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#include <form.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include "bsddialog.h"
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#include "lib_util.h"
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#include "bsddialog_theme.h"
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#define REDRAWFORM 14021986 /* magic number */
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#define ISFIELDHIDDEN(item) (item.flags & BSDDIALOG_FIELDHIDDEN)
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#define ISFIELDREADONLY(item) (item.flags & BSDDIALOG_FIELDREADONLY)
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/* "Form": inputbox - passwordbox - form - passwordform - mixedform */
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extern struct bsddialog_theme t;
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/* util struct for private buffer and view options */
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struct myfield {
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int buflen;
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char *buf;
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int pos;
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int maxpos;
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bool secure;
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int securech;
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char *bottomdesc;
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};
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#define GETMYFIELD(field) ((struct myfield*)field_userptr(field))
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#define GETMYFIELD2(form) ((struct myfield*)field_userptr(current_field(form)))
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static void insertch(struct myfield *mf, int ch)
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{
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int i;
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if (mf->buflen > mf->maxpos)
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return;
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for (i = mf->buflen; i >= mf->pos; i--) {
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mf->buf[i+1] = mf->buf[i];
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}
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mf->buf[mf->pos] = ch;
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mf->pos += 1;
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if (mf->pos > mf->maxpos)
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mf->pos = mf->maxpos;
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mf->buflen += 1;
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mf->buf[mf->buflen] = '\0';
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}
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static void shiftleft(struct myfield *mf)
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{
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int i, last;
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for (i = mf->pos; i < mf->buflen -1; i++) {
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mf->buf[i] = mf->buf[i+1];
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}
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last = mf->buflen > 0 ? mf->buflen -1 : 0;
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mf->buf[last] = '\0';
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mf->buflen = last;
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}
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static void print_bottomdesc(struct myfield *mf)
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{
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move(LINES-1, 2);
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clrtoeol();
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if (mf->bottomdesc != NULL) {
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addstr(mf->bottomdesc);
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refresh();
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}
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}
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int
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return_values(struct bsddialog_conf *conf, struct buttons bs, int nitems,
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struct bsddialog_formitem *items, FORM *form, FIELD **cfield)
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{
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int i, output;
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struct myfield *mf;
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output = bs.value[bs.curr];
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if (output == BSDDIALOG_HELP && conf->form.value_withhelp == false)
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return output;
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if (output == BSDDIALOG_EXTRA && conf->form.value_withextra == false)
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return output;
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if (output == BSDDIALOG_CANCEL && conf->form.value_withcancel == false)
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return output;
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if (output == BSDDIALOG_GENERIC1 || output == BSDDIALOG_GENERIC2)
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return output;
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/* BSDDIALOG_OK */
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form_driver(form, REQ_NEXT_FIELD);
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form_driver(form, REQ_PREV_FIELD);
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for (i=0; i<nitems; i++) {
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mf = GETMYFIELD(cfield[i]);
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items[i].value = strdup(mf->buf);
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if (items[i].value == NULL)
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RETURN_ERROR("Cannot allocate memory for form value");
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}
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return (output);
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}
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static int
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form_handler(struct bsddialog_conf *conf, WINDOW *widget, int y, int cols,
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struct buttons bs, WINDOW *formwin, FORM *form, FIELD **cfield, int nitems,
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struct bsddialog_formitem *items)
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{
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bool loop, buttupdate, informwin = true;
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int i, input, output;
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struct myfield *mf;
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mf = GETMYFIELD2(form);
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print_bottomdesc(mf);
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pos_form_cursor(form);
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form_driver(form, REQ_END_LINE);
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mf->pos = MIN(mf->buflen, mf->maxpos);
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curs_set(2);
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bs.curr = -1;
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loop = buttupdate = true;
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while(loop) {
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if (buttupdate) {
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draw_buttons(widget, y, cols, bs, !informwin);
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wrefresh(widget);
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buttupdate = false;
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}
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wrefresh(formwin);
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input = getch();
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switch(input) {
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case KEY_ENTER:
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case 10: /* Enter */
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if (informwin)
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break;
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loop = false;
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output = return_values(conf, bs, nitems, items, form, cfield);
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break;
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case 27: /* Esc */
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output = BSDDIALOG_ESC;
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loop = false;
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break;
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case '\t': /* TAB */
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if (informwin) {
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bs.curr = 0;
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informwin = false;
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curs_set(0);
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} else {
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bs.curr++;
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informwin = bs.curr >= (int) bs.nbuttons ?
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true : false;
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if (informwin) {
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curs_set(2);
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pos_form_cursor(form);
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}
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}
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buttupdate = true;
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break;
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case KEY_LEFT:
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if (informwin) {
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form_driver(form, REQ_PREV_CHAR);
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mf = GETMYFIELD2(form);
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if (mf->pos > 0)
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mf->pos -= 1;
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} else {
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if (bs.curr > 0) {
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bs.curr--;
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buttupdate = true;
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}
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}
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break;
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case KEY_RIGHT:
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if (informwin) {
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mf = GETMYFIELD2(form);
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if (mf->pos >= mf->buflen)
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break;
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mf->pos += 1;
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form_driver(form, REQ_NEXT_CHAR);
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} else {
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if (bs.curr < (int) bs.nbuttons - 1) {
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bs.curr++;
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buttupdate = true;
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}
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}
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break;
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case KEY_UP:
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if (nitems < 2)
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break;
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set_field_fore(current_field(form), t.form.fieldcolor);
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set_field_back(current_field(form), t.form.fieldcolor);
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form_driver(form, REQ_PREV_FIELD);
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form_driver(form, REQ_END_LINE);
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mf = GETMYFIELD2(form);
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print_bottomdesc(mf);
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mf->pos = MIN(mf->buflen, mf->maxpos);
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set_field_fore(current_field(form), t.form.f_fieldcolor);
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set_field_back(current_field(form), t.form.f_fieldcolor);
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break;
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case KEY_DOWN:
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if (nitems < 2)
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break;
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set_field_fore(current_field(form), t.form.fieldcolor);
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set_field_back(current_field(form), t.form.fieldcolor);
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form_driver(form, REQ_NEXT_FIELD);
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form_driver(form, REQ_END_LINE);
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mf = GETMYFIELD2(form);
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print_bottomdesc(mf);
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mf->pos = MIN(mf->buflen, mf->maxpos);
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set_field_fore(current_field(form), t.form.f_fieldcolor);
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set_field_back(current_field(form), t.form.f_fieldcolor);
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break;
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case KEY_BACKSPACE:
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case 127: /* Backspace */
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mf = GETMYFIELD2(form);
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if (mf->pos <= 0)
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break;
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form_driver(form, REQ_DEL_PREV);
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form_driver(form, REQ_BEG_LINE);
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mf->pos = mf->pos - 1;
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for (i=0; i<mf->pos; i++)
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form_driver(form, REQ_NEXT_CHAR);
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shiftleft(mf);
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break;
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case KEY_DC:
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form_driver(form, REQ_DEL_CHAR);
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mf = GETMYFIELD2(form);
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if (mf->pos < mf->buflen)
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shiftleft(mf);
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break;
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case KEY_F(1):
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if (conf->f1_file == NULL && conf->f1_message == NULL)
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break;
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if (f1help(conf) != 0)
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return BSDDIALOG_ERROR;
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/* No Break */
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case KEY_RESIZE:
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output = REDRAWFORM;
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loop = false;
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break;
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default:
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/*
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* user input, add unicode chars to "public" buffer
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*/
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if (informwin) {
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mf = GETMYFIELD2(form);
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if (mf->secure)
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form_driver(form, mf->securech);
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else
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form_driver(form, input);
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insertch(mf, input);
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}
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else {
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for (i = 0; i < (int) bs.nbuttons; i++) {
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if (tolower(input) ==
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tolower((bs.label[i])[0])) {
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bs.curr = i;
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output = return_values(conf, bs,
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nitems, items, form, cfield);
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loop = false;
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}
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}
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}
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break;
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}
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}
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curs_set(0);
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return output;
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}
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static void
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form_autosize(struct bsddialog_conf *conf, int rows, int cols, int *h, int *w,
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char *text, int linelen, unsigned int *formheight, int nitems,
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struct buttons bs)
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{
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int textrow, menusize;
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textrow = text != NULL && strlen(text) > 0 ? 1 : 0;
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if (cols == BSDDIALOG_AUTOSIZE) {
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*w = VBORDERS;
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/* buttons size */
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*w += bs.nbuttons * bs.sizebutton;
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*w += bs.nbuttons > 0 ? (bs.nbuttons-1) * t.button.space : 0;
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/* line size */
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*w = MAX(*w, linelen + 3);
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/* conf.auto_minwidth */
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*w = MAX(*w, (int)conf->auto_minwidth);
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/*
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* avoid terminal overflow,
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* -1 fix false negative with big menu over the terminal and
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* autosize, for example "portconfig /usr/ports/www/apache24/".
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*/
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*w = MIN(*w, widget_max_width(conf)-1);
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}
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if (rows == BSDDIALOG_AUTOSIZE) {
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*h = HBORDERS + 2 /* buttons */ + textrow;
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if (*formheight == 0) {
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*h += nitems + 2;
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*h = MIN(*h, widget_max_height(conf));
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menusize = MIN(nitems + 2, *h - (HBORDERS + 2 + textrow));
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menusize -=2;
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*formheight = menusize < 0 ? 0 : menusize;
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}
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else /* h autosize with a fixed formheight */
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*h = *h + *formheight + 2;
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/* conf.auto_minheight */
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*h = MAX(*h, (int)conf->auto_minheight);
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/* avoid terminal overflow */
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*h = MIN(*h, widget_max_height(conf));
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}
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else {
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if (*formheight == 0)
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*formheight = MIN(rows-6-textrow, nitems);
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}
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}
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static int
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form_checksize(int rows, int cols, char *text, int formheight, int nitems,
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struct buttons bs)
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{
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int mincols, textrow, formrows;
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mincols = VBORDERS;
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/* buttons */
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mincols += bs.nbuttons * bs.sizebutton;
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mincols += bs.nbuttons > 0 ? (bs.nbuttons-1) * t.button.space : 0;
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/* line, comment to permet some cols hidden */
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/* mincols = MAX(mincols, linelen); */
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if (cols < mincols)
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RETURN_ERROR("Few cols, width < size buttons or "\
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"labels + forms");
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textrow = text != NULL && strlen(text) > 0 ? 1 : 0;
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if (nitems > 0 && formheight == 0)
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RETURN_ERROR("fields > 0 but formheight == 0, probably "\
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"terminal too small");
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formrows = nitems > 0 ? 3 : 0;
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if (rows < 2 + 2 + formrows + textrow)
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RETURN_ERROR("Few lines for this menus");
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return 0;
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}
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int
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bsddialog_form(struct bsddialog_conf *conf, char* text, int rows, int cols,
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unsigned int formheight, unsigned int nitems,
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struct bsddialog_formitem *items)
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{
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WINDOW *widget, *formwin, *textpad, *shadow;
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int i, output, color, y, x, h, w, htextpad;
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FIELD **cfield;
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FORM *form;
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struct buttons bs;
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struct myfield *myfields;
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unsigned long maxline;
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/* disable form scrolling like dialog */
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if (formheight < nitems)
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formheight = nitems;
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for (i = 0; i < (int)nitems; i++) {
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if (items[i].maxvaluelen == 0)
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RETURN_ERROR("maxvaluelen cannot be zero");
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if (items[i].fieldlen == 0)
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RETURN_ERROR("fieldlen cannot be zero");
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if (items[i].fieldlen > items[i].maxvaluelen)
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RETURN_ERROR("fieldlen cannot be > maxvaluelen");
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}
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maxline = 0;
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myfields = malloc(nitems * sizeof(struct myfield));
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cfield = calloc(nitems + 1, sizeof(FIELD*));
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for (i=0; i < (int)nitems; i++) {
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cfield[i] = new_field(1, items[i].fieldlen, items[i].yfield-1,
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items[i].xfield-1, 0, 0);
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field_opts_off(cfield[i], O_STATIC);
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set_max_field(cfield[i], items[i].maxvaluelen);
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set_field_buffer(cfield[i], 0, items[i].init);
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myfields[i].buf = malloc(items[i].maxvaluelen + 1);
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memset(myfields[i].buf, 0, items[i].maxvaluelen + 1); // end with '\0' for strdup
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strncpy(myfields[i].buf, items[i].init, items[i].maxvaluelen);
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myfields[i].buflen = strlen(myfields[i].buf);
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myfields[i].maxpos = items[i].maxvaluelen -1;
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myfields[i].pos = MIN(myfields[i].buflen, myfields[i].maxpos);
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myfields[i].bottomdesc = items[i].bottomdesc;
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set_field_userptr(cfield[i], &myfields[i]);
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field_opts_off(cfield[i], O_AUTOSKIP);
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field_opts_off(cfield[i], O_BLANK);
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/* field_opts_off(field[i], O_BS_OVERLOAD); */
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if (ISFIELDHIDDEN(items[i])) {
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/* field_opts_off(field[i], O_PUBLIC); old hidden */
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myfields[i].secure = true;
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myfields[i].securech = ' ';
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if (conf->form.securech != '\0')
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myfields[i].securech = conf->form.securech;
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}
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else myfields[i].secure = false;
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if (ISFIELDREADONLY(items[i])) {
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field_opts_off(cfield[i], O_EDIT);
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field_opts_off(cfield[i], O_ACTIVE);
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color = t.form.readonlycolor;
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} else {
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color = i == 0 ? t.form.f_fieldcolor : t.form.fieldcolor;
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}
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set_field_fore(cfield[i], color);
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set_field_back(cfield[i], color);
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maxline = MAX(maxline, items[i].xlabel + strlen(items[i].label));
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maxline = MAX(maxline, items[i].xfield + items[i].fieldlen);
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}
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cfield[i] = NULL;
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/* disable focus with 1 item (inputbox or passwordbox) */
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if (formheight == 1 && nitems == 1 && strlen(items[0].label) == 0 &&
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items[0].xfield == 1 ) {
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set_field_fore(cfield[0], t.dialog.color);
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set_field_back(cfield[0], t.dialog.color);
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}
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get_buttons(conf, &bs, BUTTONLABEL(ok_label), BUTTONLABEL(extra_label),
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BUTTONLABEL(cancel_label), BUTTONLABEL(help_label));
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if (set_widget_size(conf, rows, cols, &h, &w) != 0)
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return BSDDIALOG_ERROR;
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form_autosize(conf, rows, cols, &h, &w, text, maxline, &formheight,
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nitems, bs);
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if (form_checksize(h, w, text, formheight, nitems, bs) != 0)
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return BSDDIALOG_ERROR;
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if (set_widget_position(conf, &y, &x, h, w) != 0)
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return BSDDIALOG_ERROR;
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if (new_widget_withtextpad(conf, &shadow, &widget, y, x, h, w, RAISED,
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&textpad, &htextpad, text, true) != 0)
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return BSDDIALOG_ERROR;
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prefresh(textpad, 0, 0, y + 1, x + 1 + t.text.hmargin,
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y + h - formheight, x + 1 + w - t.text.hmargin);
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formwin = new_boxed_window(conf, y + h - 3 - formheight -2, x +1,
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formheight+2, w-2, LOWERED);
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form = new_form(cfield);
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set_form_win(form, formwin);
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/* should be formheight */
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set_form_sub(form, derwin(formwin, nitems, w-4, 1, 1));
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post_form(form);
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for (i=0; i < (int)nitems; i++)
|
|
mvwaddstr(formwin, items[i].ylabel, items[i].xlabel, items[i].label);
|
|
|
|
wrefresh(formwin);
|
|
|
|
do {
|
|
output = form_handler(conf, widget, h-2, w, bs, formwin, form,
|
|
cfield, nitems, items);
|
|
|
|
if(update_widget_withtextpad(conf, shadow, widget, h, w,
|
|
RAISED, textpad, &htextpad, text, true) != 0)
|
|
return BSDDIALOG_ERROR;
|
|
|
|
draw_buttons(widget, h-2, w, bs, true);
|
|
wrefresh(widget);
|
|
|
|
prefresh(textpad, 0, 0, y + 1, x + 1 + t.text.hmargin,
|
|
y + h - formheight, x + 1 + w - t.text.hmargin);
|
|
|
|
draw_borders(conf, formwin, formheight+2, w-2, LOWERED);
|
|
/* wrefresh(formwin); */
|
|
} while (output == REDRAWFORM);
|
|
|
|
unpost_form(form);
|
|
free_form(form);
|
|
for (i=0; i < (int)nitems; i++) {
|
|
free_field(cfield[i]);
|
|
free(myfields[i].buf);
|
|
}
|
|
free(cfield);
|
|
free(myfields);
|
|
|
|
delwin(formwin);
|
|
end_widget_withtextpad(conf, widget, h, w, textpad, shadow);
|
|
|
|
return output;
|
|
}
|