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[dynui] Generalise mechanisms for looking up user interface items

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Generalise the ability to look up a dynamic user interface item by
index or by shortcut key, to allow for reuse of this code for
interactive forms.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2024-06-20 14:16:18 -07:00
parent 5719cde838
commit c8e50bb0fd
3 changed files with 52 additions and 32 deletions
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src/hci/tui/menu_ui.c
+6 -32
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@@ -57,25 +57,6 @@ struct menu_ui {
unsigned long timeout;
};
/**
* Return a numbered menu item
*
* @v dynui Dynamic user interface
* @v index Index
* @ret item Menu item, or NULL
*/
static struct dynamic_item * menu_item ( struct dynamic_ui *dynui,
unsigned int index ) {
struct dynamic_item *item;
list_for_each_entry ( item, &dynui->items, list ) {
if ( index-- == 0 )
return item;
}
return NULL;
}
/**
* Draw a numbered menu item
*
@@ -96,7 +77,7 @@ static void draw_menu_item ( struct menu_ui *ui, unsigned int index ) {
move ( ( MENU_ROW + row_offset ), MENU_COL );
/* Get menu item */
item = menu_item ( ui->dynui, index );
item = dynui_item ( ui->dynui, index );
if ( item ) {
/* Draw separators in a different colour */
@@ -178,7 +159,6 @@ static int menu_loop ( struct menu_ui *ui, struct dynamic_item **selected ) {
unsigned int previous;
unsigned int move;
int key;
int i;
int chosen = 0;
int rc = 0;
@@ -217,15 +197,9 @@ static int menu_loop ( struct menu_ui *ui, struct dynamic_item **selected ) {
chosen = 1;
break;
default:
i = 0;
list_for_each_entry ( item, &ui->dynui->items,
list ) {
if ( ! ( item->shortcut &&
( item->shortcut == key ) ) ) {
i++;
continue;
}
ui->scroll.current = i;
item = dynui_shortcut ( ui->dynui, key );
if ( item ) {
ui->scroll.current = item->index;
if ( item->name ) {
chosen = 1;
} else {
@@ -239,7 +213,7 @@ static int menu_loop ( struct menu_ui *ui, struct dynamic_item **selected ) {
/* Move selection, if applicable */
while ( move ) {
move = jump_scroll_move ( &ui->scroll, move );
item = menu_item ( ui->dynui, ui->scroll.current );
item = dynui_item ( ui->dynui, ui->scroll.current );
if ( item->name )
break;
}
@@ -253,7 +227,7 @@ static int menu_loop ( struct menu_ui *ui, struct dynamic_item **selected ) {
}
/* Record selection */
item = menu_item ( ui->dynui, ui->scroll.current );
item = dynui_item ( ui->dynui, ui->scroll.current );
assert ( item != NULL );
assert ( item->name != NULL );
*selected = item;