| Current Path : /usr/src/contrib/dialog/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/contrib/dialog/formbox.c |
/*
* $Id: formbox.c,v 1.73 2011/06/29 09:48:08 tom Exp $
*
* formbox.c -- implements the form (i.e, some pairs label/editbox)
*
* Copyright 2003-2010,2011 Thomas E. Dickey
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License, version 2.1
* as published by the Free Software Foundation.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to
* Free Software Foundation, Inc.
* 51 Franklin St., Fifth Floor
* Boston, MA 02110, USA.
*
* This is adapted from source contributed by
* Valery Reznic (valery_reznic@users.sourceforge.net)
*/
#include <dialog.h>
#include <dlg_keys.h>
#define LLEN(n) ((n) * FORMBOX_TAGS)
#define ItemName(i) items[LLEN(i) + 0]
#define ItemNameY(i) items[LLEN(i) + 1]
#define ItemNameX(i) items[LLEN(i) + 2]
#define ItemText(i) items[LLEN(i) + 3]
#define ItemTextY(i) items[LLEN(i) + 4]
#define ItemTextX(i) items[LLEN(i) + 5]
#define ItemTextFLen(i) items[LLEN(i) + 6]
#define ItemTextILen(i) items[LLEN(i) + 7]
#define ItemHelp(i) (dialog_vars.item_help ? items[LLEN(i) + 8] : dlg_strempty())
static bool
is_readonly(DIALOG_FORMITEM * item)
{
return ((item->type & 2) != 0) || (item->text_flen <= 0);
}
static bool
is_hidden(DIALOG_FORMITEM * item)
{
return ((item->type & 1) != 0);
}
static bool
in_window(WINDOW *win, int scrollamt, int y)
{
return (y >= scrollamt && y - scrollamt < getmaxy(win));
}
static bool
ok_move(WINDOW *win, int scrollamt, int y, int x)
{
return in_window(win, scrollamt, y)
&& (wmove(win, y - scrollamt, x) != ERR);
}
static void
move_past(WINDOW *win, int y, int x)
{
if (wmove(win, y, x) == ERR)
wmove(win, y, getmaxx(win) - 1);
}
/*
* Print form item
*/
static int
print_item(WINDOW *win, DIALOG_FORMITEM * item, int scrollamt, bool choice)
{
int count = 0;
int len;
if (ok_move(win, scrollamt, item->name_y, item->name_x)) {
len = item->name_len;
len = MIN(len, getmaxx(win) - item->name_x);
if (len > 0) {
dlg_show_string(win,
item->name,
0,
menubox_attr,
item->name_y - scrollamt,
item->name_x,
len,
FALSE,
FALSE);
move_past(win, item->name_y - scrollamt, item->name_x + len);
count = 1;
}
}
if (item->text_len && ok_move(win, scrollamt, item->text_y, item->text_x)) {
chtype this_item_attribute;
len = item->text_len;
len = MIN(len, getmaxx(win) - item->text_x);
if (!is_readonly(item)) {
this_item_attribute = choice
? form_active_text_attr
: form_text_attr;
} else {
this_item_attribute = form_item_readonly_attr;
}
if (len > 0) {
dlg_show_string(win,
item->text,
0,
this_item_attribute,
item->text_y - scrollamt,
item->text_x,
len,
is_hidden(item),
FALSE);
move_past(win, item->text_y - scrollamt, item->text_x + len);
count = 1;
}
}
return count;
}
/*
* Print the entire form.
*/
static void
print_form(WINDOW *win, DIALOG_FORMITEM * item, int total, int scrollamt, int choice)
{
int n;
int count = 0;
for (n = 0; n < total; ++n) {
count += print_item(win, item + n, scrollamt, n == choice);
}
if (count) {
wbkgdset(win, menubox_attr | ' ');
wclrtobot(win);
(void) wnoutrefresh(win);
}
}
static int
set_choice(DIALOG_FORMITEM item[], int choice, int item_no, bool * noneditable)
{
int result = -1;
int i;
*noneditable = FALSE;
if (!is_readonly(&item[choice])) {
result = choice;
} else {
for (i = 0; i < item_no; i++) {
if (!is_readonly(&(item[i]))) {
result = i;
break;
}
}
if (result < 0) {
*noneditable = TRUE;
result = 0;
}
}
return result;
}
/*
* Find the last y-value in the form.
*/
static int
form_limit(DIALOG_FORMITEM item[])
{
int n;
int limit = 0;
for (n = 0; item[n].name != 0; ++n) {
if (limit < item[n].name_y)
limit = item[n].name_y;
if (limit < item[n].text_y)
limit = item[n].text_y;
}
return limit;
}
/*
* Tab to the next field.
*/
static bool
tab_next(WINDOW *win,
DIALOG_FORMITEM item[],
int item_no,
int stepsize,
int *choice,
int *scrollamt)
{
int old_choice = *choice;
int old_scroll = *scrollamt;
bool wrapped = FALSE;
do {
do {
*choice += stepsize;
if (*choice < 0) {
*choice = item_no - 1;
wrapped = TRUE;
} else if (*choice >= item_no) {
*choice = 0;
wrapped = TRUE;
}
} while ((*choice != old_choice) && is_readonly(&(item[*choice])));
if (item[*choice].text_flen > 0) {
int lo = MIN(item[*choice].name_y, item[*choice].text_y);
int hi = MAX(item[*choice].name_y, item[*choice].text_y);
if (old_choice == *choice)
break;
print_item(win, item + old_choice, *scrollamt, FALSE);
if (*scrollamt < lo + 1 - getmaxy(win))
*scrollamt = lo + 1 - getmaxy(win);
if (*scrollamt > hi)
*scrollamt = hi;
/*
* If we have to scroll to show a wrap-around, it does get
* confusing. Just give up rather than scroll. Tab'ing to the
* next field in a multi-column form is a different matter. Scroll
* for that.
*/
if (*scrollamt != old_scroll) {
if (wrapped) {
beep();
*scrollamt = old_scroll;
*choice = old_choice;
} else {
scrollok(win, TRUE);
wscrl(win, *scrollamt - old_scroll);
scrollok(win, FALSE);
}
}
break;
}
} while (*choice != old_choice);
return (old_choice != *choice) || (old_scroll != *scrollamt);
}
/*
* Scroll to the next page, putting the choice at the first editable field
* in that page. Note that fields are not necessarily in top-to-bottom order,
* nor is there necessarily a field on each row of the window.
*/
static bool
scroll_next(WINDOW *win, DIALOG_FORMITEM item[], int stepsize, int *choice, int *scrollamt)
{
int old_choice = *choice;
int old_scroll = *scrollamt;
int old_row = MIN(item[old_choice].text_y, item[old_choice].name_y);
int target = old_scroll + stepsize;
int n;
if (stepsize < 0) {
if (old_row != old_scroll)
target = old_scroll;
else
target = old_scroll + stepsize;
if (target < 0)
target = 0;
} else {
int limit = form_limit(item);
if (target > limit)
target = limit;
}
for (n = 0; item[n].name != 0; ++n) {
if (item[n].text_flen > 0) {
int new_row = MIN(item[n].text_y, item[n].name_y);
if (abs(new_row - target) < abs(old_row - target)) {
old_row = new_row;
*choice = n;
}
}
}
if (old_choice != *choice)
print_item(win, item + old_choice, *scrollamt, FALSE);
*scrollamt = *choice;
if (*scrollamt != old_scroll) {
scrollok(win, TRUE);
wscrl(win, *scrollamt - old_scroll);
scrollok(win, FALSE);
}
return (old_choice != *choice) || (old_scroll != *scrollamt);
}
/*
* Do a sanity check on the field length, and return the "right" value.
*/
static int
real_length(DIALOG_FORMITEM * item)
{
return (item->text_flen > 0
? item->text_flen
: (item->text_flen < 0
? -item->text_flen
: item->text_len));
}
/*
* Compute the form size, setup field buffers.
*/
static void
make_FORM_ELTs(DIALOG_FORMITEM * item,
int item_no,
int *min_height,
int *min_width)
{
int i;
int min_w = 0;
int min_h = 0;
for (i = 0; i < item_no; ++i) {
int real_len = real_length(item + i);
/*
* Special value '0' for text_flen: no input allowed
* Special value '0' for text_ilen: 'be the same as text_flen'
*/
if (item[i].text_ilen == 0)
item[i].text_ilen = real_len;
min_h = MAX(min_h, item[i].name_y + 1);
min_h = MAX(min_h, item[i].text_y + 1);
min_w = MAX(min_w, item[i].name_x + 1 + item[i].name_len);
min_w = MAX(min_w, item[i].text_x + 1 + real_len);
item[i].text_len = real_length(item + i);
/*
* We do not know the actual length of .text, so we allocate it here
* to ensure it is big enough.
*/
if (item[i].text_flen > 0) {
int max_len = dlg_max_input(MAX(item[i].text_ilen + 1, MAX_LEN));
char *old_text = item[i].text;
item[i].text = dlg_malloc(char, (size_t) max_len + 1);
assert_ptr(item[i].text, "make_FORM_ELTs");
sprintf(item[i].text, "%.*s", item[i].text_ilen, old_text);
if (item[i].text_free) {
item[i].text_free = FALSE;
free(old_text);
}
item[i].text_free = TRUE;
}
}
*min_height = min_h;
*min_width = min_w;
}
int
dlg_default_formitem(DIALOG_FORMITEM * items)
{
int result = 0;
if (dialog_vars.default_item != 0) {
int count = 0;
while (items->name != 0) {
if (!strcmp(dialog_vars.default_item, items->name)) {
result = count;
break;
}
++items;
count++;
}
}
return result;
}
#define sTEXT -1
static int
next_valid_buttonindex(int state, int extra, bool non_editable)
{
state = dlg_next_ok_buttonindex(state, extra);
while (non_editable && state == sTEXT)
state = dlg_next_ok_buttonindex(state, sTEXT);
return state;
}
static int
prev_valid_buttonindex(int state, int extra, bool non_editable)
{
state = dlg_prev_ok_buttonindex(state, extra);
while (non_editable && state == sTEXT)
state = dlg_prev_ok_buttonindex(state, sTEXT);
return state;
}
#define NAVIGATE_BINDINGS \
DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \
DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \
DLG_KEYS_DATA( DLGK_ITEM_NEXT, CHR_NEXT ), \
DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_DOWN ), \
DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_NEXT ), \
DLG_KEYS_DATA( DLGK_ITEM_PREV, CHR_PREVIOUS ), \
DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_PREVIOUS ), \
DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_UP ), \
DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE ), \
DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE )
/*
* Display a form for fulfill a number of fields
*/
int
dlg_form(const char *title,
const char *cprompt,
int height,
int width,
int form_height,
int item_no,
DIALOG_FORMITEM * items,
int *current_item)
{
/* *INDENT-OFF* */
static DLG_KEYS_BINDING binding[] = {
HELPKEY_BINDINGS,
ENTERKEY_BINDINGS,
NAVIGATE_BINDINGS,
END_KEYS_BINDING
};
static DLG_KEYS_BINDING binding2[] = {
INPUTSTR_BINDINGS,
HELPKEY_BINDINGS,
ENTERKEY_BINDINGS,
NAVIGATE_BINDINGS,
END_KEYS_BINDING
};
/* *INDENT-ON* */
#ifdef KEY_RESIZE
int old_height = height;
int old_width = width;
#endif
int form_width;
int first = TRUE;
int chr_offset = 0;
int state = dialog_vars.defaultno ? dlg_defaultno_button() : sTEXT;
int x, y, cur_x, cur_y, box_x, box_y;
int code;
int key = 0;
int fkey;
int choice = dlg_default_formitem(items);
int new_choice, new_scroll;
int scrollamt = 0;
int result = DLG_EXIT_UNKNOWN;
int min_width = 0, min_height = 0;
bool was_autosize = (height == 0 || width == 0);
bool show_buttons = FALSE;
bool scroll_changed = FALSE;
bool field_changed = FALSE;
bool non_editable = FALSE;
WINDOW *dialog, *form;
char *prompt = dlg_strclone(cprompt);
const char **buttons = dlg_ok_labels();
DIALOG_FORMITEM *current;
make_FORM_ELTs(items, item_no, &min_height, &min_width);
dlg_button_layout(buttons, &min_width);
dlg_does_output();
dlg_tab_correct_str(prompt);
#ifdef KEY_RESIZE
retry:
#endif
dlg_auto_size(title, prompt, &height, &width,
1 + 3 * MARGIN,
MAX(26, 2 + min_width));
if (form_height == 0)
form_height = min_height;
if (was_autosize) {
form_height = MIN(SLINES - height, form_height);
height += form_height;
} else {
int thigh = 0;
int twide = 0;
dlg_auto_size(title, prompt, &thigh, &twide, 0, width);
thigh = SLINES - (height - (thigh + 1 + 3 * MARGIN));
form_height = MIN(thigh, form_height);
}
dlg_print_size(height, width);
dlg_ctl_size(height, width);
x = dlg_box_x_ordinate(width);
y = dlg_box_y_ordinate(height);
dialog = dlg_new_window(height, width, y, x);
dlg_register_window(dialog, "formbox", binding);
dlg_register_window(dialog, "formfield", binding2);
dlg_register_buttons(dialog, "formbox", buttons);
dlg_mouse_setbase(x, y);
dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
dlg_draw_bottom_box(dialog);
dlg_draw_title(dialog, title);
wattrset(dialog, dialog_attr);
dlg_print_autowrap(dialog, prompt, height, width);
form_width = width - 6;
getyx(dialog, cur_y, cur_x);
box_y = cur_y + 1;
box_x = (width - form_width) / 2 - 1;
/* create new window for the form */
form = dlg_sub_window(dialog, form_height, form_width, y + box_y + 1,
x + box_x + 1);
/* draw a box around the form items */
dlg_draw_box(dialog, box_y, box_x, form_height + 2, form_width + 2,
menubox_border_attr, menubox_attr);
/* register the new window, along with its borders */
dlg_mouse_mkbigregion(getbegy(form) - getbegy(dialog),
getbegx(form) - getbegx(dialog),
getmaxy(form),
getmaxx(form),
KEY_MAX, 1, 1, 3 /* by cells */ );
show_buttons = TRUE;
scroll_changed = TRUE;
choice = set_choice(items, choice, item_no, &non_editable);
current = &items[choice];
if (non_editable)
state = next_valid_buttonindex(state, sTEXT, non_editable);
while (result == DLG_EXIT_UNKNOWN) {
int edit = FALSE;
if (scroll_changed) {
print_form(form, items, item_no, scrollamt, choice);
dlg_draw_scrollbar(dialog,
scrollamt,
scrollamt,
scrollamt + form_height + 1,
min_height,
box_x + 1,
box_x + form_width,
box_y,
box_y + form_height + 1,
menubox_attr,
menubox_border_attr);
scroll_changed = FALSE;
}
if (show_buttons) {
dlg_item_help("");
dlg_draw_buttons(dialog, height - 2, 0, buttons,
((state < 0)
? 1000 /* no such button, not highlighted */
: state),
FALSE, width);
show_buttons = FALSE;
}
if (field_changed || state == sTEXT) {
if (field_changed)
chr_offset = 0;
current = &items[choice];
dialog_vars.max_input = current->text_ilen;
dlg_item_help(current->help);
dlg_show_string(form, current->text, chr_offset,
form_active_text_attr,
current->text_y - scrollamt,
current->text_x,
current->text_len,
is_hidden(current), first);
field_changed = FALSE;
}
key = dlg_mouse_wgetch(dialog, &fkey);
if (dlg_result_key(key, fkey, &result))
break;
/* handle non-functionkeys */
if (!fkey) {
if (state != sTEXT) {
code = dlg_char_to_button(key, buttons);
if (code >= 0) {
dlg_del_window(dialog);
result = dlg_ok_buttoncode(code);
continue;
}
if (key == ' ') {
fkey = TRUE;
key = DLGK_ENTER;
}
}
}
/* handle functionkeys */
if (fkey) {
bool do_scroll = FALSE;
bool do_tab = FALSE;
int move_by = 0;
switch (key) {
case DLGK_MOUSE(KEY_PPAGE):
case DLGK_PAGE_PREV:
do_scroll = TRUE;
move_by = -form_height;
break;
case DLGK_MOUSE(KEY_NPAGE):
case DLGK_PAGE_NEXT:
do_scroll = TRUE;
move_by = form_height;
break;
case DLGK_ENTER:
dlg_del_window(dialog);
result = (state >= 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK;
continue;
case DLGK_GRID_LEFT:
if (state == sTEXT)
break;
/* FALLTHRU */
case DLGK_ITEM_PREV:
if (state == sTEXT) {
do_tab = TRUE;
move_by = -1;
break;
} else {
state = prev_valid_buttonindex(state, 0, non_editable);
show_buttons = TRUE;
continue;
}
case DLGK_FIELD_PREV:
state = prev_valid_buttonindex(state, sTEXT, non_editable);
show_buttons = TRUE;
continue;
case DLGK_FIELD_NEXT:
state = next_valid_buttonindex(state, sTEXT, non_editable);
show_buttons = TRUE;
continue;
case DLGK_GRID_RIGHT:
if (state == sTEXT)
break;
/* FALLTHRU */
case DLGK_ITEM_NEXT:
if (state == sTEXT) {
do_tab = TRUE;
move_by = 1;
break;
} else {
state = next_valid_buttonindex(state, 0, non_editable);
show_buttons = TRUE;
continue;
}
#ifdef KEY_RESIZE
case KEY_RESIZE:
/* reset data */
height = old_height;
width = old_width;
/* repaint */
dlg_clear();
dlg_del_window(dialog);
refresh();
dlg_mouse_free_regions();
goto retry;
#endif
default:
#if USE_MOUSE
if (is_DLGK_MOUSE(key)) {
if (key >= DLGK_MOUSE(KEY_MAX)) {
int cell = key - DLGK_MOUSE(KEY_MAX);
int row = (cell / getmaxx(form)) + scrollamt;
int col = (cell % getmaxx(form));
int n;
for (n = 0; n < item_no; ++n) {
if (items[n].name_y == row
&& items[n].name_x <= col
&& (items[n].name_x + items[n].name_len > col
|| (items[n].name_y == items[n].text_y
&& items[n].text_x > col))) {
if (!is_readonly(&(items[n]))) {
field_changed = TRUE;
break;
}
}
if (items[n].text_y == row
&& items[n].text_x <= col
&& items[n].text_x + items[n].text_ilen > col) {
if (!is_readonly(&(items[n]))) {
field_changed = TRUE;
break;
}
}
}
if (field_changed) {
print_item(form, items + choice, scrollamt, FALSE);
choice = n;
continue;
}
beep();
} else if ((code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
result = code;
}
continue;
}
#endif
break;
}
new_scroll = scrollamt;
new_choice = choice;
if (do_scroll) {
if (scroll_next(form, items, move_by, &new_choice, &new_scroll)) {
if (choice != new_choice) {
choice = new_choice;
field_changed = TRUE;
}
if (scrollamt != new_scroll) {
scrollamt = new_scroll;
scroll_changed = TRUE;
}
}
continue;
}
if (do_tab) {
if (tab_next(form, items, item_no, move_by, &new_choice, &new_scroll)) {
if (choice != new_choice) {
choice = new_choice;
field_changed = TRUE;
}
if (scrollamt != new_scroll) {
scrollamt = new_scroll;
scroll_changed = TRUE;
}
}
continue;
}
}
if (state == sTEXT) { /* Input box selected */
if (!is_readonly(current))
edit = dlg_edit_string(current->text, &chr_offset, key,
fkey, first);
if (edit) {
dlg_show_string(form, current->text, chr_offset,
form_active_text_attr,
current->text_y - scrollamt,
current->text_x,
current->text_len,
is_hidden(current), first);
continue;
}
}
}
dlg_mouse_free_regions();
dlg_del_window(dialog);
free(prompt);
*current_item = choice;
return result;
}
/*
* Free memory owned by a list of DIALOG_FORMITEM's.
*/
void
dlg_free_formitems(DIALOG_FORMITEM * items)
{
int n;
for (n = 0; items[n].name != 0; ++n) {
if (items[n].name_free)
free(items[n].name);
if (items[n].text_free)
free(items[n].text);
if (items[n].help_free && items[n].help != dlg_strempty())
free(items[n].help);
}
free(items);
}
/*
* The script accepts values beginning at 1, while curses starts at 0.
*/
int
dlg_ordinate(const char *s)
{
int result = atoi(s);
if (result > 0)
--result;
else
result = 0;
return result;
}
int
dialog_form(const char *title,
const char *cprompt,
int height,
int width,
int form_height,
int item_no,
char **items)
{
int result;
int choice;
int i;
DIALOG_FORMITEM *listitems;
DIALOG_VARS save_vars;
bool show_status = FALSE;
dlg_save_vars(&save_vars);
dialog_vars.separate_output = TRUE;
listitems = dlg_calloc(DIALOG_FORMITEM, (size_t) item_no + 1);
assert_ptr(listitems, "dialog_form");
for (i = 0; i < item_no; ++i) {
listitems[i].type = dialog_vars.formitem_type;
listitems[i].name = ItemName(i);
listitems[i].name_len = (int) strlen(ItemName(i));
listitems[i].name_y = dlg_ordinate(ItemNameY(i));
listitems[i].name_x = dlg_ordinate(ItemNameX(i));
listitems[i].text = ItemText(i);
listitems[i].text_len = (int) strlen(ItemText(i));
listitems[i].text_y = dlg_ordinate(ItemTextY(i));
listitems[i].text_x = dlg_ordinate(ItemTextX(i));
listitems[i].text_flen = atoi(ItemTextFLen(i));
listitems[i].text_ilen = atoi(ItemTextILen(i));
listitems[i].help = ((dialog_vars.item_help)
? ItemHelp(i)
: dlg_strempty());
}
result = dlg_form(title,
cprompt,
height,
width,
form_height,
item_no,
listitems,
&choice);
switch (result) {
case DLG_EXIT_OK: /* FALLTHRU */
case DLG_EXIT_EXTRA:
show_status = TRUE;
break;
case DLG_EXIT_HELP:
dlg_add_result("HELP ");
show_status = dialog_vars.help_status;
if (USE_ITEM_HELP(listitems[choice].help)) {
dlg_add_string(listitems[choice].help);
result = DLG_EXIT_ITEM_HELP;
} else {
dlg_add_string(listitems[choice].name);
}
if (show_status)
dlg_add_separator();
break;
}
if (show_status) {
for (i = 0; i < item_no; i++) {
if (listitems[i].text_flen > 0) {
dlg_add_string(listitems[i].text);
dlg_add_separator();
}
}
}
dlg_free_formitems(listitems);
dlg_restore_vars(&save_vars);
return result;
}