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[settings] Display only applicable settings in "config" user interface

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Display only settings relevant to the current scope.  For example,
"config net0" no longer displays SMBIOS settings, and "config smbios"
displays only SMBIOS settings.

Originally-implemented-by: Glenn Brown <glenn@myri.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2011-03-22 21:07:22 +00:00
parent 5fbd0207b2
commit 48b66e4f1a
1 changed files with 18 additions and 10 deletions
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28
src/hci/tui/settings_ui.c
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@ -66,6 +66,8 @@ struct setting_row {
struct setting_widget {
/** Settings block */
struct settings *settings;
/** Number of applicable settings */
unsigned int num_settings;
/** Index of the first visible setting, for scrolling. */
unsigned int first_visible;
/** Configuration setting */
@ -82,9 +84,6 @@ struct setting_widget {
char value[256]; /* enough size for a DHCP string */
};
/** Number of registered configuration settings */
#define NUM_SETTINGS table_num_entries ( SETTINGS )
static void load_setting ( struct setting_widget *widget ) __nonnull;
static int save_setting ( struct setting_widget *widget ) __nonnull;
static void init_widget ( struct setting_widget *widget,
@ -143,8 +142,14 @@ static int save_setting ( struct setting_widget *widget ) {
*/
static void init_widget ( struct setting_widget *widget,
struct settings *settings ) {
struct setting *setting;
memset ( widget, 0, sizeof ( *widget ) );
widget->settings = settings;
for_each_table_entry ( setting, SETTINGS ) {
if ( setting_applies ( settings, setting ) )
widget->num_settings++;
}
widget->first_visible = SETTINGS_LIST_ROWS;
reveal ( widget, 0 );
}
@ -210,14 +215,18 @@ static int edit_setting ( struct setting_widget *widget, int key ) {
*/
static void select_setting ( struct setting_widget *widget,
unsigned int index ) {
struct setting *all_settings = table_start ( SETTINGS );
unsigned int skip = offsetof ( struct setting_widget, setting );
/* Reset the widget, preserving static state. */
memset ( ( char * ) widget + skip, 0, sizeof ( *widget ) - skip );
widget->setting = &all_settings[index];
widget->row = SETTINGS_LIST_ROW + index - widget->first_visible;
widget->col = SETTINGS_LIST_COL;
for_each_table_entry ( widget->setting, SETTINGS ) {
if ( ! setting_applies ( widget->settings, widget->setting ) )
continue;
if ( index-- == 0 )
break;
}
/* Read current setting value */
load_setting ( widget );
@ -359,13 +368,12 @@ static void reveal ( struct setting_widget *widget, unsigned int n)
widget->first_visible > 0 ? "..." : " " );
mvaddstr ( SETTINGS_LIST_ROW + SETTINGS_LIST_ROWS,
SETTINGS_LIST_COL + 1,
( widget->first_visible + SETTINGS_LIST_ROWS < NUM_SETTINGS
? "..."
: " " ) );
( ( widget->first_visible + SETTINGS_LIST_ROWS )
< widget->num_settings ? "..." : " " ) );
/* Draw visible settings. */
for ( i = 0; i < SETTINGS_LIST_ROWS; i++ ) {
if ( widget->first_visible + i < NUM_SETTINGS ) {
if ( ( widget->first_visible + i ) < widget->num_settings ) {
select_setting ( widget, widget->first_visible + i );
draw_setting ( widget );
} else {
@ -424,7 +432,7 @@ static int main_loop ( struct settings *settings ) {
next = current;
switch ( key ) {
case KEY_DOWN:
if ( next < ( NUM_SETTINGS - 1 ) )
if ( next < ( widget.num_settings - 1 ) )
reveal ( &widget, ++next );
break;
case KEY_UP: