[settings] Add support for navigation keys in "config" user interface

Add support for page up, page down, home and end keys, matching the
navigation logic used in the menu user interface.

Originally-implemented-by: Marin Hannache <git@mareo.fr>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/hci/tui/settings_ui.c b/src/hci/tui/settings_ui.c
index eb82ae54cf6f62618661bd9dba2b12bc2868e708..f7efbbb4d7ac592175d016d839d412e9a39fb5ef 100644 (file)
--- a/src/hci/tui/settings_ui.c
+++ b/src/hci/tui/settings_ui.c
@@ -508,13 +508,25 @@ static int main_loop ( struct settings *settings ) {
                        key = getkey ( 0 );
                        move = 0;
                        switch ( key ) {
+                       case KEY_UP:
+                               move = -1;
+                               break;
                        case KEY_DOWN:
-                               if ( widget.current < ( widget.num_rows - 1 ) )
-                                       move = +1;
+                               move = +1;
                                break;
-                       case KEY_UP:
-                               if ( widget.current > 0 )
-                                       move = -1;
+                       case KEY_PPAGE:
+                               move = ( widget.first_visible -
+                                        widget.current - 1 );
+                               break;
+                       case KEY_NPAGE:
+                               move = ( widget.first_visible - widget.current
+                                        + SETTINGS_LIST_ROWS );
+                               break;
+                       case KEY_HOME:
+                               move = -widget.num_rows;
+                               break;
+                       case KEY_END:
+                               move = +widget.num_rows;
                                break;
                        case CTRL_D:
                                if ( ! widget.row.setting )
@@ -545,10 +557,16 @@ static int main_loop ( struct settings *settings ) {
                        }
                        if ( move ) {
                                next = ( widget.current + move );
-                               draw_setting_row ( &widget );
-                               redraw = 1;
-                               reveal_setting_row ( &widget, next );
-                               select_setting_row ( &widget, next );
+                               if ( ( int ) next < 0 )
+                                       next = 0;
+                               if ( next >= widget.num_rows )
+                                       next = ( widget.num_rows - 1 );
+                               if ( next != widget.current ) {
+                                       draw_setting_row ( &widget );
+                                       redraw = 1;
+                                       reveal_setting_row ( &widget, next );
+                                       select_setting_row ( &widget, next );
+                               }
                        }
                }
        }