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freebsd-dev/contrib/dialog/buildlist.c
Baptiste Daroussin 2a3e3873a1 Update dialog to 1.2-20130523 
Level up WARNS
2013-06-17 10:28:55 +00:00

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/*
* $Id: buildlist.c,v 1.57 2013/03/17 13:46:30 tom Exp $
*
* buildlist.c -- implements the buildlist dialog
*
* Copyright 2012,2013 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.
*/
#include <dialog.h>
#include <dlg_keys.h>
/*
* Visually like menubox, but two columns.
*/
#define sLEFT (-2)
#define sRIGHT (-1)
#define KEY_TOGGLE ' '
#define KEY_LEFTCOL '^'
#define KEY_RIGHTCOL '$'
#define MIN_HIGH (1 + (5 * MARGIN))
typedef struct {
WINDOW *win;
int box_y;
int box_x;
int top_index;
int cur_index;
} MY_DATA;
typedef struct {
DIALOG_LISTITEM *items;
int base_y; /* base for mouse coordinates */
int base_x;
int use_height; /* actual size of column box */
int use_width;
int item_no;
int check_x;
int item_x;
MY_DATA list[2];
} ALL_DATA;
/*
* Print list item. The 'selected' parameter is true if 'choice' is the
* current item. That one is colored differently from the other items.
*/
static void
print_item(ALL_DATA * data,
WINDOW *win,
DIALOG_LISTITEM * item,
int choice,
int selected)
{
chtype save = dlg_get_attrs(win);
int i;
bool both = (!dialog_vars.no_tags && !dialog_vars.no_items);
bool first = TRUE;
int climit = (data->item_x - data->check_x - 1);
const char *show = (dialog_vars.no_items
? item->name
: item->text);
/* Clear 'residue' of last item */
(void) wattrset(win, menubox_attr);
(void) wmove(win, choice, 0);
for (i = 0; i < getmaxx(win); i++)
(void) waddch(win, ' ');
(void) wmove(win, choice, data->check_x);
(void) wattrset(win, menubox_attr);
if (both) {
dlg_print_listitem(win, item->name, climit, first, selected);
(void) waddch(win, ' ');
first = FALSE;
}
(void) wmove(win, choice, data->item_x);
climit = (getmaxx(win) - data->item_x + 1);
dlg_print_listitem(win, show, climit, first, selected);
if (selected) {
dlg_item_help(item->help);
}
(void) wattrset(win, save);
}
/*
* Prints either the left (unselected) or right (selected) list.
*/
static void
print_1_list(ALL_DATA * data,
int choice,
int selected)
{
MY_DATA *moi = data->list + selected;
WINDOW *win = moi->win;
int i, j;
int last = 0;
int max_rows = getmaxy(win);
for (i = j = 0; j < max_rows; i++) {
int ii = i + moi->top_index;
if (ii >= data->item_no) {
break;
} else if (!(selected ^ (data->items[ii].state != 0))) {
print_item(data,
win,
&data->items[ii],
j, ii == choice);
last = ++j;
}
}
if (wmove(win, last, 0) != ERR)
wclrtobot(win);
(void) wnoutrefresh(win);
}
/*
* Return the previous item from the list, staying in the same column. If no
* further movement is possible, return the same choice as given.
*/
static int
prev_item(ALL_DATA * data, int choice, int selected)
{
int result = choice;
int n;
for (n = choice - 1; n >= 0; --n) {
if ((data->items[n].state != 0) == selected) {
result = n;
break;
}
}
return result;
}
/*
* Return true if the given choice is on the first page in the current column.
*/
static bool
stop_prev(ALL_DATA * data, int choice, int selected)
{
return (prev_item(data, choice, selected) == choice);
}
static bool
check_hotkey(DIALOG_LISTITEM * items, int choice, int selected)
{
bool result = FALSE;
if ((items[choice].state != 0) == selected) {
if (dlg_match_char(dlg_last_getc(),
(dialog_vars.no_tags
? items[choice].text
: items[choice].name))) {
result = TRUE;
}
}
return result;
}
/*
* Return the next item from the list, staying in the same column. If no
* further movement is possible, return the same choice as given.
*/
static int
next_item(ALL_DATA * data, int choice, int selected)
{
int result = choice;
int n;
for (n = choice + 1; n < data->item_no; ++n) {
if ((data->items[n].state != 0) == selected) {
result = n;
break;
}
}
dlg_trace_msg("next_item(%d) ->%d\n", choice, result);
return result;
}
/*
* Translate a choice from items[] to a row-number in an unbounded column,
* starting at zero.
*/
static int
index2row(ALL_DATA * data, int choice, int selected)
{
int result = -1;
int n;
for (n = 0; n < data->item_no; ++n) {
if ((data->items[n].state != 0) == selected) {
++result;
}
if (n == choice)
break;
}
return result;
}
/*
* Return the first choice from items[] for the given column.
*/
static int
first_item(ALL_DATA * data, int selected)
{
int result = -1;
int n;
for (n = 0; n < data->item_no; ++n) {
if ((data->items[n].state != 0) == selected) {
result = n;
break;
}
}
return result;
}
/*
* Return the last choice from items[] for the given column.
*/
static int
last_item(ALL_DATA * data, int selected)
{
int result = -1;
int n;
for (n = data->item_no - 1; n >= 0; --n) {
if ((data->items[n].state != 0) == selected) {
result = n;
break;
}
}
return result;
}
/*
* Convert a row-number back to an item number, i.e., index into items[].
*/
static int
row2index(ALL_DATA * data, int row, int selected)
{
int result = -1;
int n;
for (n = 0; n < data->item_no; ++n) {
if ((data->items[n].state != 0) == selected) {
if (row-- <= 0) {
result = n;
break;
}
}
}
return result;
}
static int
skip_rows(ALL_DATA * data, int row, int skip, int selected)
{
int choice = row2index(data, row, selected);
int result = row;
int n;
if (skip > 0) {
for (n = choice + 1; n < data->item_no; ++n) {
if ((data->items[n].state != 0) == selected) {
++result;
if (--skip <= 0)
break;
}
}
} else if (skip < 0) {
for (n = choice - 1; n >= 0; --n) {
if ((data->items[n].state != 0) == selected) {
--result;
if (++skip >= 0)
break;
}
}
}
return result;
}
/*
* Find the closest item in the given column starting with the given choice.
*/
static int
closest_item(ALL_DATA * data, int choice, int selected)
{
int prev = choice;
int next = choice;
int result = choice;
int n;
for (n = choice; n >= 0; --n) {
if ((data->items[n].state != 0) == selected) {
prev = n;
break;
}
}
for (n = choice; n < data->item_no; ++n) {
if ((data->items[n].state != 0) == selected) {
next = n;
break;
}
}
if (prev != choice) {
result = prev;
if (next != choice) {
if ((choice - prev) > (next - choice)) {
result = next;
}
}
} else if (next != choice) {
result = next;
}
return result;
}
static void
print_both(ALL_DATA * data,
int choice)
{
int selected;
int cur_y, cur_x;
WINDOW *dialog = wgetparent(data->list[0].win);
getyx(dialog, cur_y, cur_x);
for (selected = 0; selected < 2; ++selected) {
MY_DATA *moi = data->list + selected;
WINDOW *win = moi->win;
int thumb_top = index2row(data, moi->top_index, selected);
int thumb_max = index2row(data, -1, selected);
int thumb_end = thumb_top + getmaxy(win);
print_1_list(data, choice, selected);
dlg_mouse_setcode(selected * KEY_MAX);
dlg_draw_scrollbar(dialog,
(long) (moi->top_index),
(long) (thumb_top),
(long) MIN(thumb_end, thumb_max),
(long) thumb_max,
moi->box_x + data->check_x,
moi->box_x + getmaxx(win),
moi->box_y,
moi->box_y + getmaxy(win) + 1,
menubox_border2_attr,
menubox_border_attr);
}
(void) wmove(dialog, cur_y, cur_x);
dlg_mouse_setcode(0);
}
static void
set_top_item(ALL_DATA * data, int value, int selected)
{
if (value != data->list[selected].top_index) {
dlg_trace_msg("set top of %s column to %d\n",
selected ? "right" : "left",
value);
data->list[selected].top_index = value;
}
}
/*
* Adjust the top-index as needed to ensure that it and the given item are
* visible.
*/
static void
fix_top_item(ALL_DATA * data, int cur_item, int selected)
{
int top_item = data->list[selected].top_index;
int cur_row = index2row(data, cur_item, selected);
int top_row = index2row(data, top_item, selected);
if (cur_row < top_row) {
top_item = cur_item;
} else if ((cur_row - top_row) > data->use_height) {
top_item = row2index(data, cur_row + 1 - data->use_height, selected);
}
if (cur_row < data->use_height) {
top_item = row2index(data, 0, selected);
}
dlg_trace_msg("fix_top_item(cur_item %d, selected %d) ->top_item %d\n",
cur_item, selected, top_item);
set_top_item(data, top_item, selected);
}
/*
* This is an alternate interface to 'buildlist' which allows the application
* to read the list item states back directly without putting them in the
* output buffer.
*/
int
dlg_buildlist(const char *title,
const char *cprompt,
int height,
int width,
int list_height,
int item_no,
DIALOG_LISTITEM * items,
const char *states,
int order_mode,
int *current_item)
{
/* *INDENT-OFF* */
static DLG_KEYS_BINDING binding[] = {
HELPKEY_BINDINGS,
ENTERKEY_BINDINGS,
DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
DLG_KEYS_DATA( DLGK_ITEM_FIRST, KEY_HOME ),
DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_END ),
DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_LL ),
DLG_KEYS_DATA( DLGK_ITEM_NEXT, '+' ),
DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_DOWN ),
DLG_KEYS_DATA( DLGK_ITEM_NEXT, CHR_NEXT ),
DLG_KEYS_DATA( DLGK_ITEM_PREV, '-' ),
DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_UP ),
DLG_KEYS_DATA( DLGK_ITEM_PREV, CHR_PREVIOUS ),
DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE ),
DLG_KEYS_DATA( DLGK_PAGE_NEXT, DLGK_MOUSE(KEY_NPAGE) ),
DLG_KEYS_DATA( DLGK_PAGE_NEXT, DLGK_MOUSE(KEY_NPAGE+KEY_MAX) ),
DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE ),
DLG_KEYS_DATA( DLGK_PAGE_PREV, DLGK_MOUSE(KEY_PPAGE) ),
DLG_KEYS_DATA( DLGK_PAGE_PREV, DLGK_MOUSE(KEY_PPAGE+KEY_MAX) ),
DLG_KEYS_DATA( DLGK_GRID_LEFT, KEY_LEFTCOL ),
DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_RIGHTCOL ),
END_KEYS_BINDING
};
/* *INDENT-ON* */
#ifdef KEY_RESIZE
int old_height = height;
int old_width = width;
#endif
ALL_DATA all;
MY_DATA *data = all.list;
int i, j, k, key2, found, x, y, cur_x, cur_y;
int key = 0, fkey;
bool save_visit = dialog_state.visit_items;
int button;
int cur_item;
int was_mouse;
int name_width, text_width, full_width, list_width;
int result = DLG_EXIT_UNKNOWN;
int num_states;
bool first = TRUE;
WINDOW *dialog;
char *prompt = dlg_strclone(cprompt);
const char **buttons = dlg_ok_labels();
const char *widget_name = "buildlist";
(void) order_mode;
/*
* Unlike other uses of --visit-items, we have two windows to visit.
*/
if (dialog_state.visit_cols)
dialog_state.visit_cols = 2;
memset(&all, 0, sizeof(all));
all.items = items;
all.item_no = item_no;
if (dialog_vars.default_item != 0) {
cur_item = dlg_default_listitem(items);
} else {
if ((cur_item = first_item(&all, 0)) < 0)
cur_item = first_item(&all, 1);
}
button = (dialog_state.visit_items
? (items[cur_item].state ? sRIGHT : sLEFT)
: dlg_default_button());
dlg_does_output();
dlg_tab_correct_str(prompt);
#ifdef KEY_RESIZE
retry:
#endif
all.use_height = list_height;
all.use_width = (2 * (dlg_calc_list_width(item_no, items)
+ 4
+ 2 * MARGIN)
+ 1);
all.use_width = MAX(26, all.use_width);
if (all.use_height == 0) {
/* calculate height without items (4) */
dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, all.use_width);
dlg_calc_listh(&height, &all.use_height, item_no);
} else {
dlg_auto_size(title, prompt,
&height, &width,
MIN_HIGH + all.use_height, all.use_width);
}
dlg_button_layout(buttons, &width);
dlg_print_size(height, width);
dlg_ctl_size(height, width);
/* we need at least two states */
if (states == 0 || strlen(states) < 2)
states = " *";
num_states = (int) strlen(states);
x = dlg_box_x_ordinate(width);
y = dlg_box_y_ordinate(height);
dialog = dlg_new_window(height, width, y, x);
dlg_register_window(dialog, widget_name, binding);
dlg_register_buttons(dialog, widget_name, buttons);
dlg_mouse_setbase(all.base_x = x, all.base_y = y);
dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
dlg_draw_title(dialog, title);
(void) wattrset(dialog, dialog_attr);
dlg_print_autowrap(dialog, prompt, height, width);
list_width = (width - 6 * MARGIN - 2) / 2;
getyx(dialog, cur_y, cur_x);
data[0].box_y = cur_y + 1;
data[0].box_x = MARGIN + 1;
data[1].box_y = cur_y + 1;
data[1].box_x = data[0].box_x + 1 + 2 * MARGIN + list_width;
/*
* After displaying the prompt, we know how much space we really have.
* Limit the list to avoid overwriting the ok-button.
*/
if (all.use_height + MIN_HIGH > height - cur_y)
all.use_height = height - MIN_HIGH - cur_y;
if (all.use_height <= 0)
all.use_height = 1;
for (k = 0; k < 2; ++k) {
/* create new window for the list */
data[k].win = dlg_sub_window(dialog, all.use_height, list_width,
y + data[k].box_y + 1,
x + data[k].box_x + 1);
/* draw a box around the list items */
dlg_draw_box(dialog, data[k].box_y, data[k].box_x,
all.use_height + 2 * MARGIN,
list_width + 2 * MARGIN,
menubox_border_attr, menubox_border2_attr);
}
text_width = 0;
name_width = 0;
/* Find length of longest item to center buildlist */
for (i = 0; i < item_no; i++) {
text_width = MAX(text_width, dlg_count_columns(items[i].text));
name_width = MAX(name_width, dlg_count_columns(items[i].name));
}
/* If the name+text is wider than the list is allowed, then truncate
* one or both of them. If the name is no wider than 1/4 of the list,
* leave it intact.
*/
all.use_width = (list_width - 6 * MARGIN);
if (dialog_vars.no_tags && !dialog_vars.no_items) {
full_width = MIN(all.use_width, text_width);
} else if (dialog_vars.no_items) {
full_width = MIN(all.use_width, name_width);
} else {
if (text_width >= 0
&& name_width >= 0
&& all.use_width > 0
&& text_width + name_width > all.use_width) {
int need = (int) (0.25 * all.use_width);
if (name_width > need) {
int want = (int) (all.use_width * ((double) name_width) /
(text_width + name_width));
name_width = (want > need) ? want : need;
}
text_width = all.use_width - name_width;
}
full_width = text_width + name_width;
}
all.check_x = (all.use_width - full_width) / 2;
all.item_x = ((dialog_vars.no_tags
? 0
: (dialog_vars.no_items
? 0
: (name_width + 2)))
+ all.check_x);
/* ensure we are scrolled to show the current choice */
j = MIN(all.use_height, item_no);
for (i = 0; i < 2; ++i) {
int top_item = 0;
if ((items[cur_item].state != 0) == i) {
top_item = cur_item - j + 1;
if (top_item < 0)
top_item = 0;
set_top_item(&all, top_item, i);
} else {
set_top_item(&all, 0, i);
}
}
/* register the new window, along with its borders */
for (i = 0; i < 2; ++i) {
dlg_mouse_mkbigregion(data[i].box_y + 1,
data[i].box_x,
all.use_height,
list_width + 2,
2 * KEY_MAX + (i * (1 + all.use_height)),
1, 1, 1 /* by lines */ );
}
dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
while (result == DLG_EXIT_UNKNOWN) {
int which = (items[cur_item].state != 0);
MY_DATA *moi = data + which;
int at_top = index2row(&all, moi->top_index, which);
int at_end = index2row(&all, -1, which);
int at_bot = skip_rows(&all, at_top, all.use_height, which);
dlg_trace_msg("\t** state %d:%d top %d (%d:%d:%d) %d\n",
cur_item, item_no - 1,
moi->top_index,
at_top, at_bot, at_end,
which);
if (first) {
print_both(&all, cur_item);
dlg_trace_win(dialog);
first = FALSE;
}
if (button < 0) { /* --visit-items */
int cur_row = index2row(&all, cur_item, which);
cur_y = (data[which].box_y
+ cur_row
+ 1);
if (at_top > 0)
cur_y -= at_top;
cur_x = (data[which].box_x
+ all.check_x + 1);
dlg_trace_msg("\t...visit row %d (%d,%d)\n", cur_row, cur_y, cur_x);
wmove(dialog, cur_y, cur_x);
}
key = dlg_mouse_wgetch(dialog, &fkey);
if (dlg_result_key(key, fkey, &result))
break;
was_mouse = (fkey && is_DLGK_MOUSE(key));
if (was_mouse)
key -= M_EVENT;
if (!was_mouse) {
;
} else if (key >= 2 * KEY_MAX) {
i = (key - 2 * KEY_MAX) % (1 + all.use_height);
j = (key - 2 * KEY_MAX) / (1 + all.use_height);
k = row2index(&all, i + at_top, j);
dlg_trace_msg("MOUSE column %d, row %d ->item %d\n", j, i, k);
if (k >= 0 && j < 2) {
if (j != which) {
/*
* Mouse click was in the other column.
*/
moi = data + j;
fix_top_item(&all, k, j);
}
which = j;
at_top = index2row(&all, moi->top_index, which);
at_bot = skip_rows(&all, at_top, all.use_height, which);
cur_item = k;
print_both(&all, cur_item);
key = KEY_TOGGLE; /* force the selected item to toggle */
} else {
beep();
continue;
}
fkey = FALSE;
} else if (key >= KEY_MIN) {
if (key > KEY_MAX) {
if (which == 0) {
key = KEY_RIGHTCOL; /* switch to right-column */
fkey = FALSE;
} else {
key -= KEY_MAX;
}
} else {
if (which == 1) {
key = KEY_LEFTCOL; /* switch to left-column */
fkey = FALSE;
}
}
key = dlg_lookup_key(dialog, key, &fkey);
}
/*
* A space toggles the item status. Normally we put the cursor on
* the next available item in the same column. But if there are no
* more items in the column, move the cursor to the other column.
*/
if (key == KEY_TOGGLE) {
int new_choice;
int new_state = items[cur_item].state + 1;
if ((new_choice = next_item(&all, cur_item, which)) == cur_item) {
new_choice = prev_item(&all, cur_item, which);
}
dlg_trace_msg("cur_item %d, new_choice:%d\n", cur_item, new_choice);
if (new_state >= num_states)
new_state = 0;
items[cur_item].state = new_state;
if (cur_item == moi->top_index) {
set_top_item(&all, new_choice, which);
}
if (new_choice >= 0) {
fix_top_item(&all, cur_item, !which);
cur_item = new_choice;
}
print_both(&all, cur_item);
dlg_trace_win(dialog);
continue; /* wait for another key press */
}
/*
* Check if key pressed matches first character of any item tag in
* list. If there is more than one match, we will cycle through
* each one as the same key is pressed repeatedly.
*/
found = FALSE;
if (!fkey) {
if (button < 0 || !dialog_state.visit_items) {
for (j = cur_item + 1; j < item_no; j++) {
if (check_hotkey(items, j, which)) {
found = TRUE;
i = j;
break;
}
}
if (!found) {
for (j = 0; j <= cur_item; j++) {
if (check_hotkey(items, j, which)) {
found = TRUE;
i = j;
break;
}
}
}
if (found)
dlg_flush_getc();
} else if ((j = dlg_char_to_button(key, buttons)) >= 0) {
button = j;
ungetch('\n');
continue;
}
}
/*
* A single digit (1-9) positions the selection to that line in the
* current screen.
*/
if (!found
&& (key <= '9')
&& (key > '0')
&& (key - '1' < at_bot)) {
found = TRUE;
i = key - '1';
}
if (!found && fkey) {
switch (key) {
case DLGK_FIELD_PREV:
if ((button == sRIGHT) && dialog_state.visit_items) {
key = DLGK_GRID_LEFT;
button = sLEFT;
} else {
button = dlg_prev_button(buttons, button);
dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
FALSE, width);
if (button == sRIGHT) {
key = DLGK_GRID_RIGHT;
} else {
continue;
}
}
break;
case DLGK_FIELD_NEXT:
if ((button == sLEFT) && dialog_state.visit_items) {
key = DLGK_GRID_RIGHT;
button = sRIGHT;
} else {
button = dlg_next_button(buttons, button);
dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
FALSE, width);
if (button == sLEFT) {
key = DLGK_GRID_LEFT;
} else {
continue;
}
}
break;
}
}
if (!found && fkey) {
i = cur_item;
found = TRUE;
switch (key) {
case DLGK_GRID_LEFT:
i = closest_item(&all, cur_item, 0);
fix_top_item(&all, i, 0);
break;
case DLGK_GRID_RIGHT:
i = closest_item(&all, cur_item, 1);
fix_top_item(&all, i, 1);
break;
case DLGK_PAGE_PREV:
if (cur_item > moi->top_index) {
i = moi->top_index;
} else if (moi->top_index != 0) {
int temp = at_top;
if ((temp -= all.use_height) < 0)
temp = 0;
i = row2index(&all, temp, which);
}
break;
case DLGK_PAGE_NEXT:
if ((at_end - at_bot) < all.use_height) {
i = next_item(&all,
row2index(&all, at_end, which),
which);
} else {
i = next_item(&all,
row2index(&all, at_bot, which),
which);
at_top = at_bot;
set_top_item(&all,
next_item(&all,
row2index(&all, at_top, which),
which),
which);
at_bot = skip_rows(&all, at_top, all.use_height, which);
at_bot = MIN(at_bot, at_end);
}
break;
case DLGK_ITEM_FIRST:
i = first_item(&all, which);
break;
case DLGK_ITEM_LAST:
i = last_item(&all, which);
break;
case DLGK_ITEM_PREV:
i = prev_item(&all, cur_item, which);
if (stop_prev(&all, cur_item, which))
continue;
break;
case DLGK_ITEM_NEXT:
i = next_item(&all, cur_item, which);
break;
default:
found = FALSE;
break;
}
}
if (found) {
if (i != cur_item) {
int now_at = index2row(&all, i, which);
int oops = item_no;
int old_item;
dlg_trace_msg("<--CHOICE %d\n", i);
dlg_trace_msg("<--topITM %d\n", moi->top_index);
dlg_trace_msg("<--now_at %d\n", now_at);
dlg_trace_msg("<--at_top %d\n", at_top);
dlg_trace_msg("<--at_bot %d\n", at_bot);
if (now_at >= at_bot) {
while (now_at >= at_bot) {
if ((at_bot - at_top) >= all.use_height) {
set_top_item(&all,
next_item(&all, moi->top_index, which),
which);
}
at_top = index2row(&all, moi->top_index, which);
at_bot = skip_rows(&all, at_top, all.use_height, which);
dlg_trace_msg("...at_bot %d (now %d vs %d)\n",
at_bot, now_at, at_end);
dlg_trace_msg("...topITM %d\n", moi->top_index);
dlg_trace_msg("...at_top %d (diff %d)\n", at_top,
at_bot - at_top);
if (at_bot >= at_end) {
/*
* If we bumped into the end, move the top-item
* down by one line so that we can display the
* last item in the list.
*/
if ((at_bot - at_top) > all.use_height) {
set_top_item(&all,
next_item(&all, moi->top_index, which),
which);
} else if (at_top > 0 &&
(at_bot - at_top) >= all.use_height) {
set_top_item(&all,
next_item(&all, moi->top_index, which),
which);
}
break;
}
if (--oops < 0) {
dlg_trace_msg("OOPS-forward\n");
break;
}
}
} else if (now_at < at_top) {
while (now_at < at_top) {
old_item = moi->top_index;
set_top_item(&all,
prev_item(&all, moi->top_index, which),
which);
at_top = index2row(&all, moi->top_index, which);
dlg_trace_msg("...at_top %d (now %d)\n", at_top, now_at);
dlg_trace_msg("...topITM %d\n", moi->top_index);
if (moi->top_index >= old_item)
break;
if (at_top <= now_at)
break;
if (--oops < 0) {
dlg_trace_msg("OOPS-backward\n");
break;
}
}
}
dlg_trace_msg("-->now_at %d\n", now_at);
cur_item = i;
print_both(&all, cur_item);
}
dlg_trace_win(dialog);
continue; /* wait for another key press */
}
if (fkey) {
switch (key) {
case DLGK_ENTER:
result = dlg_enter_buttoncode(button);
break;
#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 (was_mouse) {
if ((key2 = dlg_ok_buttoncode(key)) >= 0) {
result = key2;
break;
}
beep();
}
}
} else {
beep();
}
}
dialog_state.visit_cols = save_visit;
dlg_del_window(dialog);
dlg_mouse_free_regions();
free(prompt);
*current_item = cur_item;
return result;
}
/*
* Display a dialog box with a list of options that can be turned on or off
*/
int
dialog_buildlist(const char *title,
const char *cprompt,
int height,
int width,
int list_height,
int item_no,
char **items,
int order_mode)
{
int result;
int i, j;
DIALOG_LISTITEM *listitems;
bool separate_output = dialog_vars.separate_output;
bool show_status = FALSE;
int current = 0;
listitems = dlg_calloc(DIALOG_LISTITEM, (size_t) item_no + 1);
assert_ptr(listitems, "dialog_buildlist");
for (i = j = 0; i < item_no; ++i) {
listitems[i].name = items[j++];
listitems[i].text = (dialog_vars.no_items
? dlg_strempty()
: items[j++]);
listitems[i].state = !dlg_strcmp(items[j++], "on");
listitems[i].help = ((dialog_vars.item_help)
? items[j++]
: dlg_strempty());
}
dlg_align_columns(&listitems[0].text, (int) sizeof(DIALOG_LISTITEM), item_no);
result = dlg_buildlist(title,
cprompt,
height,
width,
list_height,
item_no,
listitems,
NULL,
order_mode,
&current);
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[current].help)) {
if (show_status) {
if (separate_output) {
dlg_add_string(listitems[current].help);
dlg_add_separator();
} else {
dlg_add_quoted(listitems[current].help);
}
} else {
dlg_add_string(listitems[current].help);
}
result = DLG_EXIT_ITEM_HELP;
} else {
if (show_status) {
if (separate_output) {
dlg_add_string(listitems[current].name);
dlg_add_separator();
} else {
dlg_add_quoted(listitems[current].name);
}
} else {
dlg_add_string(listitems[current].name);
}
}
break;
}
if (show_status) {
for (i = 0; i < item_no; i++) {
if (listitems[i].state) {
if (separate_output) {
dlg_add_string(listitems[i].name);
dlg_add_separator();
} else {
if (dlg_need_separator())
dlg_add_separator();
dlg_add_quoted(listitems[i].name);
}
}
}
dlg_add_last_key(-1);
}
dlg_free_columns(&listitems[0].text, (int) sizeof(DIALOG_LISTITEM), item_no);
free(listitems);
return result;
}
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