ui/ncurses: Use a fixed-sized for small, known-length fields

Fields without O_STATIC can "scroll" horizontally, and we may miss a
left-hand section of text from the current display. This can mean that
the user can't leave a validated field with no indication why, if the
off-to-the-left data is not a valid entry.

This change adds a widgetset function to mark a field as fixed-size, so
we don't have this scrolling behaviour. This means that the entire field
contents will always be visible, and any validation errors can be seen.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/ui/ncurses/nc-widgets.h b/ui/ncurses/nc-widgets.h
index 32b6bae..09c3b1f 100644
--- a/ui/ncurses/nc-widgets.h
+++ b/ui/ncurses/nc-widgets.h
@@ -35,6 +35,7 @@ struct nc_widget_button *widget_new_button(struct nc_widgetset *set,
 		int y, int x, int size, const char *str,
 		void (*click)(void *), void *arg);
 
+void widget_textbox_set_fixed_size(struct nc_widget_textbox *textbox);
 void widget_textbox_set_validator_integer(struct nc_widget_textbox *textbox,
 		long min, long max);
 void widget_textbox_set_validator_ipv4(struct nc_widget_textbox *textbox);