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Implement line_edit() function (full line editor) which may called

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externally.
Rewrite inputbox/textbox to use this function.
This commit is contained in:
Andrey A. Chernov 1994-10-21 15:42:30 +00:00
parent 57a3ad3e15
commit 2a9cdd71dd
5 changed files with 184 additions and 171 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gnu/lib/libdialog/Makefile
View File

@ -1,9 +1,9 @@
# Makefile for libdialog
# $Id: Makefile,v 1.2 1994/10/12 01:54:38 ache Exp $
# $Id: Makefile,v 1.3 1994/10/20 21:56:34 ache Exp $
LIB= dialog
SRCS= kernel.c rc.c checklist.c inputbox.c menubox.c msgbox.c \
radiolist.c textbox.c yesno.c
lineedit.c radiolist.c textbox.c yesno.c
CFLAGS+= -Wall -Wstrict-prototypes -DLOCALE

1
gnu/lib/libdialog/dialog.h
View File

@ -41,6 +41,7 @@ extern bool use_shadow;
void draw_shadow(WINDOW *win, int y, int x, int height, int width);
#endif
void draw_box(WINDOW *win, int y, int x, int height, int width, chtype box, chtype border);
int line_edit(WINDOW* dialog, int box_y, int box_x, int box_width, chtype attrs, int first, unsigned char *result);
void dialog_create_rc(unsigned char *filename);
int dialog_yesno(unsigned char *title, unsigned char *prompt, int height, int width);

134
gnu/lib/libdialog/inputbox.c
View File

@ -28,8 +28,8 @@
*/
int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int width, unsigned char *result)
{
int i, x, y, box_y, box_x, box_width,
input_x = 0, scroll = 0, key = 0, button = -1;
int i, x, y, box_y, box_x, box_width, first,
key = 0, button = -1;
unsigned char instr[MAX_LEN+1];
WINDOW *dialog;
@ -37,8 +37,6 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
x = (COLS - width)/2;
y = (LINES - height)/2;
memset(instr, 0, sizeof(instr));
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
@ -80,127 +78,15 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wmove(dialog, box_y, box_x);
wrefresh(dialog);
first = 1;
while (key != ESC) {
key = wgetch(dialog);
if (button == -1) { /* Input box selected */
switch (key) {
case TAB:
case KEY_BTAB:
case KEY_UP:
case KEY_DOWN:
break;
case KEY_HOME:
input_x = scroll = 0;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[i] ? instr[i] : ' ');
wmove(dialog, box_y, box_x);
wrefresh(dialog);
continue;
case KEY_END:
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
i++;
input_x = i % box_width;
scroll = i - input_x;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
continue;
case KEY_LEFT:
if (input_x || scroll) {
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+input_x+i] ? instr[scroll+input_x+i] : ' ');
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
continue;
case KEY_RIGHT:
if (scroll+input_x < MAX_LEN) {
wattrset(dialog, inputbox_attr);
if (!instr[scroll+input_x])
instr[scroll+input_x] = ' ';
if (input_x == box_width-1) {
scroll++;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, box_x + box_width - 1);
}
else {
wmove(dialog, box_y, input_x + box_x);
waddch(dialog, instr[scroll+input_x]);
input_x++;
}
wrefresh(dialog);
} else
flash(); /* Alarm user about overflow */
continue;
case KEY_BACKSPACE:
case KEY_DC:
if (input_x || scroll) {
i = strlen(instr);
memmove(instr+scroll+input_x-1, instr+scroll+input_x, i-scroll+input_x+1);
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+input_x+i] ? instr[scroll+input_x+i] : ' ');
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
wmove(dialog, box_y, input_x + box_x);
for (i = input_x; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
continue;
default:
if (key < 0x100 && isprint(key)) {
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
i++;
if (i < MAX_LEN) {
memmove(instr+scroll+input_x+1, instr+scroll+input_x, i-scroll+input_x);
wattrset(dialog, inputbox_attr);
instr[scroll+input_x] = key;
if (input_x == box_width-1) {
scroll++;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width-1; i++)
waddch(dialog, instr[scroll+i]);
}
else {
wmove(dialog, box_y, input_x + box_x);
for (i = input_x; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, ++input_x + box_x);
}
wrefresh(dialog);
} else
flash(); /* Alarm user about overflow */
continue;
}
}
key = line_edit(dialog, box_y, box_x, box_width, dialog_attr, first, instr);
first = 0;
}
else
key = wgetch(dialog);
switch (key) {
case 'O':
@ -226,8 +112,6 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
button = -1; /* Indicates input box is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wmove(dialog, box_y, box_x + input_x);
wrefresh(dialog);
break;
case 1:
button = 0; /* Indicates "OK" button is selected */
@ -257,16 +141,12 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
button = -1; /* Indicates input box is selected */
print_button(dialog, "Cancel", y, x+14, FALSE);
print_button(dialog, " OK ", y, x, TRUE);
wmove(dialog, box_y, box_x + input_x);
wrefresh(dialog);
break;
}
break;
case ' ':
case '\n':
delwin(dialog);
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
if (button < 1)
strcpy(result, instr);
return (button == -1 ? 0 : button);

168
gnu/lib/libdialog/lineedit.c Normal file
View File

@ -0,0 +1,168 @@
/*
* inputbox.c -- implements the input box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <dialog.h>
#include "dialog.priv.h"
/*
* Line editor
*/
int line_edit(WINDOW* dialog, int box_y, int box_x, int box_width, chtype attr, int first, unsigned char *result)
{
int i, key;
static int input_x, scroll;
static unsigned char instr[MAX_LEN+1];
if (first) {
keypad(dialog, TRUE);
memset(instr, 0, sizeof(instr));
input_x = scroll = 0;
}
wattrset(dialog, attr);
wmove(dialog, box_y, box_x + input_x);
wrefresh(dialog);
for (;;) {
key = wgetch(dialog);
switch (key) {
case TAB:
case KEY_BTAB:
case KEY_UP:
case KEY_DOWN:
case ESC:
case '\n':
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
goto ret;
case KEY_HOME:
input_x = scroll = 0;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[i] ? instr[i] : ' ');
wmove(dialog, box_y, box_x);
wrefresh(dialog);
continue;
case KEY_END:
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
i++;
input_x = i % box_width;
scroll = i - input_x;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
continue;
case KEY_LEFT:
if (input_x || scroll) {
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+input_x+i] ? instr[scroll+input_x+i] : ' ');
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
continue;
case KEY_RIGHT:
if (scroll+input_x < MAX_LEN) {
wattrset(dialog, inputbox_attr);
if (!instr[scroll+input_x])
instr[scroll+input_x] = ' ';
if (input_x == box_width-1) {
scroll++;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, box_x + box_width - 1);
}
else {
wmove(dialog, box_y, input_x + box_x);
waddch(dialog, instr[scroll+input_x]);
input_x++;
}
wrefresh(dialog);
} else
flash(); /* Alarm user about overflow */
continue;
case KEY_BACKSPACE:
case KEY_DC:
if (input_x || scroll) {
i = strlen(instr);
memmove(instr+scroll+input_x-1, instr+scroll+input_x, i-scroll+input_x+1);
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+input_x+i] ? instr[scroll+input_x+i] : ' ');
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
wmove(dialog, box_y, input_x + box_x);
for (i = input_x; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
continue;
default:
if (key < 0x100 && isprint(key)) {
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
i++;
if (i < MAX_LEN) {
memmove(instr+scroll+input_x+1, instr+scroll+input_x, i-scroll+input_x);
wattrset(dialog, inputbox_attr);
instr[scroll+input_x] = key;
if (input_x == box_width-1) {
scroll++;
wmove(dialog, box_y, box_x);
for (i = 0; i < box_width-1; i++)
waddch(dialog, instr[scroll+i]);
}
else {
wmove(dialog, box_y, input_x + box_x);
for (i = input_x; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, ++input_x + box_x);
}
wrefresh(dialog);
} else
flash(); /* Alarm user about overflow */
continue;
}
}
}
ret:
strcpy(result, instr);
return key;
}

48
gnu/lib/libdialog/textbox.c
View File

@ -618,7 +618,7 @@ static unsigned char *get_line(void)
*/
static int get_search_term(WINDOW *win, unsigned char *search_term, int height, int width)
{
int i, x, y, input_x = 0, scroll = 0, key = 0,
int x, y, key = 0, first,
box_height = 3, box_width = 30;
x = (width - box_width)/2;
@ -633,55 +633,19 @@ static int get_search_term(WINDOW *win, unsigned char *search_term, int height,
waddstr(win, " Search ");
box_width -= 2;
wmove(win, y+1, x+1);
wrefresh(win);
search_term[0] = '\0';
wattrset(win, searchbox_attr);
first = 1;
while (key != ESC) {
key = wgetch(win);
key = line_edit(win, y+1, x+1, box_width, searchbox_attr, first, search_term);
first = 0;
switch (key) {
case '\n':
if (search_term[0] != '\0')
return 0;
break;
case KEY_BACKSPACE:
if (input_x || scroll) {
if (!input_x) {
scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1);
wmove(win, y+1, x+1);
for (i = 0; i < box_width; i++)
waddch(win, search_term[scroll+input_x+i] ?
search_term[scroll+input_x+i] : ' ');
input_x = strlen(search_term) - scroll;
}
else
input_x--;
search_term[scroll+input_x] = '\0';
wmove(win, y+1, input_x + x+1);
waddch(win, ' ');
wmove(win, y+1, input_x + x+1);
wrefresh(win);
}
break;
case ESC:
break;
default:
if (isprint(key))
if (scroll+input_x < MAX_LEN) {
search_term[scroll+input_x] = key;
search_term[scroll+input_x+1] = '\0';
if (input_x == box_width-1) {
scroll++;
wmove(win, y+1, x+1);
for (i = 0; i < box_width-1; i++)
waddch(win, search_term[scroll+i]);
}
else {
wmove(win, y+1, input_x++ + x+1);
waddch(win, key);
}
wrefresh(win);
}
break;
}
}