示例#1
0
/*
 * Compute the size of the button array in columns.  Return the total number of
 * columns in *length, and the longest button's columns in *longest
 */
void
dlg_button_sizes(const char **labels,
		 int vertical,
		 int *longest,
		 int *length)
{
    int n;

    *length = 0;
    *longest = 0;
    for (n = 0; labels[n] != 0; n++) {
	if (vertical) {
	    *length += 1;
	    *longest = 1;
	} else {
	    int len = dlg_count_columns(labels[n]);
	    if (len > *longest)
		*longest = len;
	    *length += len;
	}
    }
    /*
     * If we can, make all of the buttons the same size.  This is only optional
     * for buttons laid out horizontally.
     */
    if (*longest < 6 - (*longest & 1))
	*longest = 6 - (*longest & 1);
    if (!vertical)
	*length = *longest * n;
}
示例#2
0
文件: arrows.c 项目: 0mp/freebsd
/*
 * If we have help-line text, e.g., from "--hline", draw it between the other
 * decorations at the bottom of the dialog window.
 */
void
dlg_draw_helpline(WINDOW *win, bool decorations)
{
    int cur_x, cur_y;
    int bottom;

    if (dialog_vars.help_line != 0
	&& dialog_vars.help_line[0] != 0
	&& (bottom = getmaxy(win) - 1) > 0) {
	chtype attr = A_NORMAL;
	int cols = dlg_count_columns(dialog_vars.help_line);
	int other = decorations ? (ON_LEFT + ON_RIGHT) : 0;
	int avail = (getmaxx(win) - other - 2);
	int limit = dlg_count_real_columns(dialog_vars.help_line) + 2;

	if (limit < avail) {
	    getyx(win, cur_y, cur_x);
	    other = decorations ? ON_LEFT : 0;
	    (void) wmove(win, bottom, other + (avail - limit) / 2);
	    waddch(win, '[');
	    dlg_print_text(win, dialog_vars.help_line, cols, &attr);
	    waddch(win, ']');
	    wmove(win, cur_y, cur_x);
	}
    }
}
示例#3
0
文件: arrows.c 项目: 0mp/freebsd
void
dlg_draw_arrows2(WINDOW *win,
		 int top_arrow,
		 int bottom_arrow,
		 int x,
		 int top,
		 int bottom,
		 chtype attr,
		 chtype borderattr)
{
    chtype save = dlg_get_attrs(win);
    int cur_x, cur_y;
    int limit_x = getmaxx(win);
    bool draw_top = TRUE;
    bool is_toplevel = (wgetparent(win) == stdscr);

    getyx(win, cur_y, cur_x);

    /*
     * If we're drawing a centered title, do not overwrite with the arrows.
     */
    if (dialog_vars.title && is_toplevel && (top - getbegy(win)) < MARGIN) {
	int have = (limit_x - dlg_count_columns(dialog_vars.title)) / 2;
	int need = x + 5;
	if (need > have)
	    draw_top = FALSE;
    }

    if (draw_top) {
	(void) wmove(win, top, x);
	if (top_arrow) {
	    (void) wattrset(win, merge_colors(uarrow_attr, attr));
	    (void) add_acs(win, ACS_UARROW);
	    (void) waddstr(win, "(-)");
	} else {
	    (void) wattrset(win, attr);
	    (void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT);
	}
    }
    mouse_mkbutton(top, x - 1, 6, KEY_PPAGE);

    (void) wmove(win, bottom, x);
    if (bottom_arrow) {
	(void) wattrset(win, merge_colors(darrow_attr, borderattr));
	(void) add_acs(win, ACS_DARROW);
	(void) waddstr(win, "(+)");
    } else {
	(void) wattrset(win, borderattr);
	(void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT);
    }
    mouse_mkbutton(bottom, x - 1, 6, KEY_NPAGE);

    (void) wmove(win, cur_y, cur_x);
    wrefresh(win);

    (void) wattrset(win, save);
}
示例#4
0
static void
center_label(char *buffer, int longest, const char *label)
{
    int len = dlg_count_columns(label);
    int left = 0, right = 0;

    *buffer = 0;
    if (len < longest) {
	left = (longest - len) / 2;
	right = (longest - len - left);
	if (left > 0)
	    sprintf(buffer, "%*s", left, " ");
    }
    strcat(buffer, label);
    if (right > 0)
	sprintf(buffer + strlen(buffer), "%*s", right, " ");
}
示例#5
0
文件: textbox.c 项目: 0mp/freebsd
/*
 * Display a dialog box and get the search term from user.
 */
static int
get_search_term(WINDOW *dialog, char *input, int height, int width)
{
    /* *INDENT-OFF* */
    static DLG_KEYS_BINDING binding[] = {
	INPUTSTR_BINDINGS,
	HELPKEY_BINDINGS,
	ENTERKEY_BINDINGS,
	END_KEYS_BINDING
    };
    /* *INDENT-ON* */

    int old_x, old_y;
    int box_x, box_y;
    int box_height, box_width;
    int offset = 0;
    int key = 0;
    int fkey = 0;
    bool first = TRUE;
    int result = DLG_EXIT_UNKNOWN;
    const char *caption = _("Search");
    int len_caption = dlg_count_columns(caption);
    const int *indx;
    int limit;
    WINDOW *widget;

    getbegyx(dialog, old_y, old_x);

    box_height = 1 + (2 * MARGIN);
    box_width = len_caption + (2 * (MARGIN + 2));
    box_width = MAX(box_width, 30);
    box_width = MIN(box_width, getmaxx(dialog) - 2 * MARGIN);
    len_caption = MIN(len_caption, box_width - (2 * (MARGIN + 1)));

    box_x = (width - box_width) / 2;
    box_y = (height - box_height) / 2;
    widget = dlg_new_modal_window(dialog,
				  box_height, box_width,
				  old_y + box_y, old_x + box_x);
    keypad(widget, TRUE);
    dlg_register_window(widget, "searchbox", binding);

    dlg_draw_box2(widget, 0, 0, box_height, box_width,
		  searchbox_attr,
		  searchbox_border_attr,
		  searchbox_border2_attr);
    (void) wattrset(widget, searchbox_title_attr);
    (void) wmove(widget, 0, (box_width - len_caption) / 2);

    indx = dlg_index_wchars(caption);
    limit = dlg_limit_columns(caption, len_caption, 0);
    (void) waddnstr(widget, caption + indx[0], indx[limit] - indx[0]);

    box_width -= 2;
    offset = dlg_count_columns(input);

    while (result == DLG_EXIT_UNKNOWN) {
	if (!first) {
	    key = dlg_getc(widget, &fkey);
	    if (fkey) {
		switch (fkey) {
#ifdef KEY_RESIZE
		case KEY_RESIZE:
		    result = DLG_EXIT_CANCEL;
		    continue;
#endif
		case DLGK_ENTER:
		    result = DLG_EXIT_OK;
		    continue;
		}
	    } else if (key == ESC) {
		result = DLG_EXIT_ESC;
		continue;
	    } else if (key == ERR) {
		napms(50);
		continue;
	    }
	}
	if (dlg_edit_string(input, &offset, key, fkey, first)) {
	    dlg_show_string(widget, input, offset, searchbox_attr,
			    1, 1, box_width, FALSE, first);
	    first = FALSE;
	}
    }
    dlg_del_window(widget);
    return result;
}
示例#6
0
文件: checklist.c 项目: 0mp/freebsd
/*
 * This is an alternate interface to 'checklist' which allows the application
 * to read the list item states back directly without putting them in the
 * output buffer.  It also provides for more than two states over which the
 * check/radio box can display.
 */
int
dlg_checklist(const char *title,
	      const char *cprompt,
	      int height,
	      int width,
	      int list_height,
	      int item_no,
	      DIALOG_LISTITEM * items,
	      const char *states,
	      int flag,
	      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_PREV,	KEY_PPAGE ),
	DLG_KEYS_DATA( DLGK_PAGE_PREV,	DLGK_MOUSE(KEY_PPAGE) ),
	END_KEYS_BINDING
    };
    /* *INDENT-ON* */

#ifdef KEY_RESIZE
    int old_height = height;
    int old_width = width;
#endif
    ALL_DATA all;
    int i, j, key2, found, x, y, cur_x, cur_y;
    int key = 0, fkey;
    int button = dialog_state.visit_items ? -1 : dlg_default_button();
    int choice = dlg_default_listitem(items);
    int scrollamt = 0;
    int max_choice;
    int was_mouse;
    int use_width, list_width, name_width, text_width;
    int result = DLG_EXIT_UNKNOWN;
    int num_states;
    WINDOW *dialog;
    char *prompt = dlg_strclone(cprompt);
    const char **buttons = dlg_ok_labels();
    const char *widget_name;

    memset(&all, 0, sizeof(all));
    all.items = items;
    all.item_no = item_no;

    dlg_does_output();
    dlg_tab_correct_str(prompt);

    /*
     * If this is a radiobutton list, ensure that no more than one item is
     * selected initially.  Allow none to be selected, since some users may
     * wish to provide this flavor.
     */
    if (flag == FLAG_RADIO) {
	bool first = TRUE;

	for (i = 0; i < item_no; i++) {
	    if (items[i].state) {
		if (first) {
		    first = FALSE;
		} else {
		    items[i].state = 0;
		}
	    }
	}
	widget_name = "radiolist";
    } else {
	widget_name = "checklist";
    }
#ifdef KEY_RESIZE
  retry:
#endif

    all.use_height = list_height;
    use_width = dlg_calc_list_width(item_no, items) + 10;
    use_width = MAX(26, use_width);
    if (all.use_height == 0) {
	/* calculate height without items (4) */
	dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, use_width);
	dlg_calc_listh(&height, &all.use_height, item_no);
    } else {
	dlg_auto_size(title, prompt,
		      &height, &width,
		      MIN_HIGH + all.use_height, 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);
    all.states = states;

    all.checkflag = flag;

    x = dlg_box_x_ordinate(width);
    y = dlg_box_y_ordinate(height);

    dialog = dlg_new_window(height, width, y, x);
    all.dialog = dialog;
    dlg_register_window(dialog, widget_name, binding);
    dlg_register_buttons(dialog, widget_name, buttons);

    dlg_mouse_setbase(x, 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);

    all.use_width = width - 6;
    getyx(dialog, cur_y, cur_x);
    all.box_y = cur_y + 1;
    all.box_x = (width - all.use_width) / 2 - 1;

    /*
     * 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;

    max_choice = MIN(all.use_height, item_no);
    max_choice = MAX(max_choice, 1);

    /* create new window for the list */
    all.list = dlg_sub_window(dialog, all.use_height, all.use_width,
			      y + all.box_y + 1, x + all.box_x + 1);

    /* draw a box around the list items */
    dlg_draw_box(dialog, all.box_y, all.box_x,
		 all.use_height + 2 * MARGIN,
		 all.use_width + 2 * MARGIN,
		 menubox_border_attr, menubox_border2_attr);

    text_width = 0;
    name_width = 0;
    /* Find length of longest item to center checklist */
    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.
     */
    use_width = (all.use_width - 6);
    if (dialog_vars.no_tags) {
	list_width = MIN(all.use_width, text_width);
    } else if (dialog_vars.no_items) {
	list_width = MIN(all.use_width, name_width);
    } else {
	if (text_width >= 0
	    && name_width >= 0
	    && use_width > 0
	    && text_width + name_width > use_width) {
	    int need = (int) (0.25 * use_width);
	    if (name_width > need) {
		int want = (int) (use_width * ((double) name_width) /
				  (text_width + name_width));
		name_width = (want > need) ? want : need;
	    }
	    text_width = use_width - name_width;
	}
	list_width = (text_width + name_width);
    }

    all.check_x = (use_width - list_width) / 2;
    all.item_x = ((dialog_vars.no_tags
		   ? 0
		   : (dialog_vars.no_items
		      ? 0
		      : (2 + name_width)))
		  + all.check_x + 4);

    /* ensure we are scrolled to show the current choice */
    scrollamt = MIN(scrollamt, max_choice + item_no - 1);
    if (choice >= (max_choice + scrollamt - 1)) {
	scrollamt = MAX(0, choice - max_choice + 1);
	choice = max_choice - 1;
    }
    print_list(&all, choice, scrollamt, max_choice);

    /* register the new window, along with its borders */
    dlg_mouse_mkbigregion(all.box_y + 1, all.box_x,
			  all.use_height, all.use_width + 2,
			  KEY_MAX, 1, 1, 1 /* by lines */ );

    dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);

    dlg_trace_win(dialog);
    while (result == DLG_EXIT_UNKNOWN) {
	if (button < 0)		/* --visit-items */
	    wmove(dialog, all.box_y + choice + 1, all.box_x + all.check_x + 2);

	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 && (key >= KEY_MAX)) {
	    getyx(dialog, cur_y, cur_x);
	    i = (key - KEY_MAX);
	    if (i < max_choice) {
		choice = (key - KEY_MAX);
		print_list(&all, choice, scrollamt, max_choice);

		key = ' ';	/* force the selected item to toggle */
	    } else {
		beep();
		continue;
	    }
	    fkey = FALSE;
	} else if (was_mouse && key >= KEY_MIN) {
	    key = dlg_lookup_key(dialog, key, &fkey);
	}

	/*
	 * A space toggles the item status.  We handle either a checklist
	 * (any number of items can be selected) or radio list (zero or one
	 * items can be selected).
	 */
	if (key == ' ') {
	    int current = scrollamt + choice;
	    int next = items[current].state + 1;

	    if (next >= num_states)
		next = 0;

	    if (flag == FLAG_CHECK) {	/* checklist? */
		getyx(dialog, cur_y, cur_x);
		items[current].state = next;
		print_item(&all, all.list,
			   &items[scrollamt + choice],
			   states,
			   choice, TRUE);
		(void) wnoutrefresh(all.list);
		(void) wmove(dialog, cur_y, cur_x);
	    } else {		/* radiolist */
		for (i = 0; i < item_no; i++) {
		    if (i != current) {
			items[i].state = 0;
		    }
		}
		if (items[current].state) {
		    getyx(dialog, cur_y, cur_x);
		    items[current].state = next ? next : 1;
		    print_item(&all, all.list,
			       &items[current],
			       states,
			       choice, TRUE);
		    (void) wnoutrefresh(all.list);
		    (void) wmove(dialog, cur_y, cur_x);
		} else {
		    items[current].state = 1;
		    print_list(&all, choice, scrollamt, max_choice);
		}
	    }
	    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 = scrollamt + choice + 1; j < item_no; j++) {
		    if (check_hotkey(items, j)) {
			found = TRUE;
			i = j - scrollamt;
			break;
		    }
		}
		if (!found) {
		    for (j = 0; j <= scrollamt + choice; j++) {
			if (check_hotkey(items, j)) {
			    found = TRUE;
			    i = j - scrollamt;
			    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' < max_choice)) {
	    found = TRUE;
	    i = key - '1';
	}

	if (!found) {
	    if (fkey) {
		found = TRUE;
		switch (key) {
		case DLGK_ITEM_FIRST:
		    i = -scrollamt;
		    break;
		case DLGK_ITEM_LAST:
		    i = item_no - 1 - scrollamt;
		    break;
		case DLGK_PAGE_PREV:
		    if (choice)
			i = 0;
		    else if (scrollamt != 0)
			i = -MIN(scrollamt, max_choice);
		    else
			continue;
		    break;
		case DLGK_PAGE_NEXT:
		    i = MIN(choice + max_choice, item_no - scrollamt - 1);
		    break;
		case DLGK_ITEM_PREV:
		    i = choice - 1;
		    if (choice == 0 && scrollamt == 0)
			continue;
		    break;
		case DLGK_ITEM_NEXT:
		    i = choice + 1;
		    if (scrollamt + choice >= item_no - 1)
			continue;
		    break;
		default:
		    found = FALSE;
		    break;
		}
	    }
	}

	if (found) {
	    if (i != choice) {
		getyx(dialog, cur_y, cur_x);
		if (i < 0 || i >= max_choice) {
		    if (i < 0) {
			scrollamt += i;
			choice = 0;
		    } else {
			choice = max_choice - 1;
			scrollamt += (i - max_choice + 1);
		    }
		    print_list(&all, choice, scrollamt, max_choice);
		} else {
		    choice = i;
		    print_list(&all, choice, scrollamt, max_choice);
		}
	    }
	    continue;		/* wait for another key press */
	}

	if (fkey) {
	    switch (key) {
	    case DLGK_ENTER:
		result = dlg_enter_buttoncode(button);
		break;
	    case DLGK_FIELD_PREV:
		button = dlg_prev_button(buttons, button);
		dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
				 FALSE, width);
		break;
	    case DLGK_FIELD_NEXT:
		button = dlg_next_button(buttons, button);
		dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
				 FALSE, width);
		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();
	}
    }

    dlg_del_window(dialog);
    dlg_mouse_free_regions();
    free(prompt);
    *current_item = (scrollamt + choice);
    return result;
}
示例#7
0
文件: arrows.c 项目: 0mp/freebsd
void
dlg_draw_scrollbar(WINDOW *win,
		   long first_data,
		   long this_data,
		   long next_data,
		   long total_data,
		   int left,
		   int right,
		   int top,
		   int bottom,
		   chtype attr,
		   chtype borderattr)
{
    char buffer[80];
    int percent;
    int len;
    int oldy, oldx;

    chtype save = dlg_get_attrs(win);
    int top_arrow = (first_data != 0);
    int bottom_arrow = (next_data < total_data);

    getyx(win, oldy, oldx);

    dlg_draw_helpline(win, TRUE);
    if (bottom_arrow || top_arrow || dialog_state.use_scrollbar) {
	percent = (!total_data
		   ? 100
		   : (int) ((next_data * 100)
			    / total_data));

	if (percent < 0)
	    percent = 0;
	else if (percent > 100)
	    percent = 100;

	(void) wattrset(win, position_indicator_attr);
	(void) sprintf(buffer, "%d%%", percent);
	(void) wmove(win, bottom, right - 7);
	(void) waddstr(win, buffer);
	if ((len = dlg_count_columns(buffer)) < 4) {
	    (void) wattrset(win, border_attr);
	    whline(win, dlg_boxchar(ACS_HLINE), 4 - len);
	}
    }
#define BARSIZE(num) (int) (0.5 + (double) ((all_high * (int) (num)) / (double) total_data))
#define ORDSIZE(num) (int) ((double) ((all_high * (int) (num)) / (double) all_diff))

    if (dialog_state.use_scrollbar) {
	int all_high = (bottom - top - 1);

	this_data = MAX(0, this_data);

	if (total_data > 0 && all_high > 0) {
	    int all_diff = (int) (total_data + 1);
	    int bar_diff = (int) (next_data + 1 - this_data);
	    int bar_high;
	    int bar_y;

	    bar_high = ORDSIZE(bar_diff);
	    if (bar_high <= 0)
		bar_high = 1;

	    if (bar_high < all_high) {
		int bar_last = BARSIZE(next_data);

		wmove(win, top + 1, right);

		(void) wattrset(win, save);
		wvline(win, ACS_VLINE | A_REVERSE, all_high);

		bar_y = ORDSIZE(this_data);
		if (bar_y >= bar_last && bar_y > 0)
		    bar_y = bar_last - 1;
		if (bar_last - bar_y > bar_high && bar_high > 1)
		    ++bar_y;
		bar_last = MIN(bar_last, all_high);

		wmove(win, top + 1 + bar_y, right);

		(void) wattrset(win, position_indicator_attr);
		wattron(win, A_REVERSE);
#if defined(WACS_BLOCK) && defined(NCURSES_VERSION) && defined(USE_WIDE_CURSES)
		wvline_set(win, WACS_BLOCK, bar_last - bar_y);
#else
		wvline(win, ACS_BLOCK, bar_last - bar_y);
#endif
	    }
	}
    }
    dlg_draw_arrows2(win,
		     top_arrow,
		     bottom_arrow,
		     left + ARROWS_COL,
		     top,
		     bottom,
		     attr,
		     borderattr);

    (void) wattrset(win, save);
    wmove(win, oldy, oldx);
}
示例#8
0
/*
 * Print a list of buttons at the given position.
 */
void
dlg_draw_buttons(WINDOW *win,
		 int y, int x,
		 const char **labels,
		 int selected,
		 int vertical,
		 int limit)
{
    chtype save = dlg_get_attrs(win);
    int n;
    int step = 0;
    int length;
    int longest;
    int final_x;
    int final_y;
    int gap;
    int margin;
    size_t need;
    char *buffer;

    dlg_mouse_setbase(getbegx(win), getbegy(win));

    getyx(win, final_y, final_x);

    dlg_button_sizes(labels, vertical, &longest, &length);

    if (vertical) {
	y += 1;
	step = 1;
    } else {
	dlg_button_x_step(labels, limit, &gap, &margin, &step);
	x += margin;
    }

    /*
     * Allocate a buffer big enough for any label.
     */
    need = (size_t) longest;
    for (n = 0; labels[n] != 0; ++n) {
	need += strlen(labels[n]) + 1;
    }
    buffer = dlg_malloc(char, need);
    assert_ptr(buffer, "dlg_draw_buttons");

    /*
     * Draw the labels.
     */
    for (n = 0; labels[n] != 0; n++) {
	center_label(buffer, longest, labels[n]);
	mouse_mkbutton(y, x, dlg_count_columns(buffer), n);
	print_button(win, buffer, y, x,
		     (selected == n) || (n == 0 && selected < 0));
	if (selected == n)
	    getyx(win, final_y, final_x);

	if (vertical) {
	    if ((y += step) > limit)
		break;
	} else {
	    if ((x += step) > limit)
		break;
	}
    }
    (void) wmove(win, final_y, final_x);
    wrefresh(win);
    free(buffer);
    wattrset(win, save);
}
示例#9
0
/*
 * 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 menu for choosing among a number of options
 */
int
dialog_menu(const char *title, const char *cprompt, int height, int width,
	    int menu_height, int item_no, char **items)
{
    int i, j, x, y, cur_x, cur_y, box_x, box_y;
    int key = 0, fkey;
    int button = 0;
    int choice = dlg_default_item(items, MENUBOX_TAGS);
    int result = DLG_EXIT_UNKNOWN;
    int scrollamt = 0;
    int max_choice, min_width;
    int found;
    int use_width, name_width, text_width;
    WINDOW *dialog, *menu;
    char *prompt = strclone(cprompt);
    const char **buttons = dlg_ok_labels();

    tab_correct_str(prompt);
    if (menu_height == 0) {
	min_width = calc_listw(item_no, items, MENUBOX_TAGS) + 10;
	/* calculate height without items (4) */
	auto_size(title, prompt, &height, &width, 4, MAX(26, min_width));
	calc_listh(&height, &menu_height, item_no);
    } else {
	auto_size(title, prompt, &height, &width, 4 + menu_height, 26);
    }
    print_size(height, width);
    ctl_size(height, width);

    /* Find out maximal number of displayable items at once. */
    max_choice = MIN(menu_height,
		     RowHeight(item_no));
    if (dialog_vars.input_menu)
	max_choice /= INPUT_ROWS;

    x = box_x_ordinate(width);
    y = box_y_ordinate(height);

    dialog = new_window(height, width, y, x);

    mouse_setbase(x, y);

    draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
    draw_bottom_box(dialog);
    draw_title(dialog, title);

    wattrset(dialog, dialog_attr);
    print_autowrap(dialog, prompt, height, width);

    menu_width = width - 6;
    getyx(dialog, cur_y, cur_x);
    box_y = cur_y + 1;
    box_x = (width - menu_width) / 2 - 1;

    /* create new window for the menu */
    menu = sub_window(dialog, menu_height, menu_width,
		      y + box_y + 1,
		      x + box_x + 1);

    /* draw a box around the menu items */
    draw_box(dialog, box_y, box_x, menu_height + 2, menu_width + 2,
	     menubox_border_attr, menubox_attr);

    name_width = 0;
    text_width = 0;

    /* Find length of longest item to center menu  *
     * only if --menu was given, using --inputmenu *
     * won't be centered.                         */
    for (i = 0; i < item_no; i++) {
	name_width = MAX(name_width, dlg_count_columns(ItemName(i)));
	text_width = MAX(text_width, dlg_count_columns(ItemText(i)));
    }

    /* 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.
     */
    use_width = (menu_width - GUTTER);
    if (text_width + name_width > use_width) {
	int need = 0.25 * use_width;
	if (name_width > need) {
	    int want = use_width * ((double) name_width) / (text_width + name_width);
	    name_width = (want > need) ? want : need;
	}
	text_width = use_width - name_width;
    }

    tag_x = (dialog_vars.input_menu
	     ? 0
	     : (use_width - text_width - name_width) / 2);
    item_x = name_width + tag_x + GUTTER;

    if (choice - scrollamt >= max_choice) {
	scrollamt = choice - (max_choice - 1);
	choice = max_choice - 1;
    }

    /* Print the menu */
    for (i = 0; i < max_choice; i++)
	print_item(menu, ItemData(i + scrollamt), i, i == choice);
    (void) wnoutrefresh(menu);

    /* register the new window, along with its borders */
    mouse_mkbigregion(box_y + 1, box_x, menu_height + 2, menu_width + 2,
		      KEY_MAX, 1, 1, 1 /* by lines */ );

    dlg_draw_arrows(dialog, scrollamt,
		    scrollamt + max_choice < item_no,
		    box_x + tag_x + 1,
		    box_y,
		    box_y + menu_height + 1);

    dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);

    wtimeout(dialog, WTIMEOUT_VAL);

    while (result == DLG_EXIT_UNKNOWN) {
	key = mouse_wgetch(dialog, &fkey);

	if (!fkey) {
	    fkey = TRUE;
	    switch (key) {
	    case '\n':
	    case '\r':
		key = KEY_ENTER;
		break;
	    case '-':
		key = KEY_UP;
		break;
	    case '+':
		key = KEY_DOWN;
		break;
	    case ' ':
	    case TAB:
		key = KEY_RIGHT;
		break;
	    case ESC:
		result = DLG_EXIT_ESC;
		continue;
	    default:
		fkey = FALSE;
		break;
	    }
	}

	found = FALSE;
	if (fkey) {
	    /*
	     * Allow a mouse-click on a box to switch selection to that box.
	     * Handling a button click is a little more complicated, since we
	     * push a KEY_ENTER back onto the input stream so we'll put the
	     * cursor at the right place before handling the "keypress".
	     */
	    if (key >= (M_EVENT + KEY_MAX)) {
		key -= (M_EVENT + KEY_MAX);
		i = RowToItem(key);
		found = TRUE;
	    } else if (key >= M_EVENT
		       && dlg_ok_buttoncode(key - M_EVENT) >= 0) {
		button = (key - M_EVENT);
		ungetch('\n');
		continue;
	    }
	} else {
	    /*
	     * 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.
	     */
	    for (j = scrollamt + choice + 1; j < item_no; j++) {
		if (dlg_match_char(dlg_last_getc(), ItemName(j))) {
		    found = TRUE;
		    i = j - scrollamt;
		    break;
		}
	    }
	    if (!found) {
		for (j = 0; j <= scrollamt + choice; j++) {
		    if (dlg_match_char(dlg_last_getc(), ItemName(j))) {
			found = TRUE;
			i = j - scrollamt;
			break;
		    }
		}
	    }
	    if (found)
		dlg_flush_getc();

	    /*
	     * A single digit (1-9) positions the selection to that line in the
	     * current screen.
	     */
	    if (!found
		&& (key <= '9')
		&& (key > '0')
		&& (key - '1' < max_choice)) {
		found = TRUE;
		i = key - '1';
	    }
	}

	if (!found && fkey) {
	    found = TRUE;
	    switch (key) {
	    case KEY_HOME:
		i = -scrollamt;
		break;
	    case KEY_LL:
	    case KEY_END:
		i = item_no - 1 - scrollamt;
		break;
	    case M_EVENT + KEY_PPAGE:
	    case KEY_PPAGE:
		if (choice)
		    i = 0;
		else if (scrollamt != 0)
		    i = -MIN(scrollamt, max_choice);
		else
		    continue;
		break;
	    case M_EVENT + KEY_NPAGE:
	    case KEY_NPAGE:
		i = MIN(choice + max_choice, item_no - scrollamt - 1);
		break;
	    case KEY_UP:
		i = choice - 1;
		if (choice == 0 && scrollamt == 0)
		    continue;
		break;
	    case KEY_DOWN:
		i = choice + 1;
		if (scrollamt + choice >= item_no - 1)
		    continue;
		break;
	    default:
		found = FALSE;
		break;
	    }
	}

	if (found) {
	    if (i != choice) {
		getyx(dialog, cur_y, cur_x);
		if (i < 0 || i >= max_choice) {
#if defined(NCURSES_VERSION_MAJOR) && NCURSES_VERSION_MAJOR < 5
		    /*
		     * Using wscrl to assist ncurses scrolling is not needed
		     * in version 5.x
		     */
		    if (i == -1) {
			if (menu_height > 1) {
			    /* De-highlight current first item */
			    print_item(menu, ItemData(scrollamt), 0, FALSE);
			    scrollok(menu, TRUE);
			    wscrl(menu, -RowHeight(1));
			    scrollok(menu, FALSE);
			}
			scrollamt--;
			print_item(menu, ItemData(scrollamt), 0, TRUE);
		    } else if (i == max_choice) {
			if (menu_height > 1) {
			    /* De-highlight current last item before scrolling up */
			    print_item(menu,
				       ItemData(scrollamt + max_choice - 1),
				       max_choice - 1, FALSE);
			    scrollok(menu, TRUE);
			    wscrl(menu, RowHeight(1));
			    scrollok(menu, FALSE);
			}
			scrollamt++;
			print_item(menu,
				   ItemData(scrollamt + max_choice - 1),
				   max_choice - 1, TRUE);
		    } else
#endif
		    {
			if (i < 0) {
			    scrollamt += i;
			    choice = 0;
			} else {
			    choice = max_choice - 1;
			    scrollamt += (i - max_choice + 1);
			}
			for (i = 0; i < max_choice; i++) {
			    print_item(menu,
				       ItemData(scrollamt + i),
				       i, i == choice);
			}
		    }
		    /* Clean bottom lines */
		    if (dialog_vars.input_menu) {
			int spare_lines, x_count;
			spare_lines = menu_height % INPUT_ROWS;
			wattrset(menu, menubox_attr);
			for (; spare_lines; spare_lines--) {
			    wmove(menu, menu_height - spare_lines, 0);
			    for (x_count = 0; x_count < menu_width;
				 x_count++) {
				waddch(menu, ' ');
			    }
			}
		    }
		    (void) wnoutrefresh(menu);
		    dlg_draw_arrows(dialog, scrollamt,
				    scrollamt + choice < item_no - 1,
				    box_x + tag_x + 1,
				    box_y,
				    box_y + menu_height + 1);
		} else {
		    /* De-highlight current item */
		    print_item(menu,
			       ItemData(scrollamt + choice),
			       choice, FALSE);
		    /* Highlight new item */
		    choice = i;
		    print_item(menu,
			       ItemData(scrollamt + choice),
			       choice, TRUE);
		    (void) wnoutrefresh(menu);
		    (void) wmove(dialog, cur_y, cur_x);
		    wrefresh(dialog);
		}
	    }
	    continue;		/* wait for another key press */
	}

	if (fkey) {
	    switch (key) {
	    case KEY_BTAB:
	    case KEY_LEFT:
		button = dlg_prev_button(buttons, button);
		dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
				 FALSE, width);
		break;
	    case KEY_RIGHT:
		button = dlg_next_button(buttons, button);
		dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
				 FALSE, width);
		break;
	    case KEY_ENTER:
		del_window(dialog);
		result = handle_button(dlg_ok_buttoncode(button),
				       items,
				       scrollamt + choice);

		if (dialog_vars.input_menu && result == DLG_EXIT_EXTRA) {
		    char *tmp;
		    tmp = input_menu_edit(menu, ItemData(scrollamt + choice),
					  choice);

		    dialog_vars.input_result[0] = '\0';
		    dlg_add_result("RENAMED ");
		    dlg_add_result(ItemName(scrollamt + choice));
		    dlg_add_result(" ");
		    dlg_add_result(tmp);
		    free(tmp);

		    dlg_draw_buttons(dialog, height - 2, 0,
				     buttons, button, FALSE, width);
		}
		break;
	    default:
		flash();
		break;
	    }
	}
    }

    mouse_free_regions();
    del_window(dialog);
    free(prompt);
    return result;
}