Struct Menu 

pub struct Menu {
    pub items: Vec<MenuItem>,
    pub default_index: Option<usize>,
}

Menu - a collection of menu items

Matches Borland: TMenu

In Borland, TMenu has:

• items: pointer to first item in linked list
• deflt: pointer to default item

In Rust, we use Vec for type safety and provide convenient builders.

Fields

items: Vec<MenuItem>

Menu items

default_index: Option<usize>

Index of default item (if any)

Implementations

impl Menu

pub fn new() -> Self

Create an empty menu

Matches Borland: TMenu()

pub fn from_items(items: Vec<MenuItem>) -> Self

Create a menu from items

Matches Borland: TMenu(itemList)

pub fn with_default(items: Vec<MenuItem>, default_index: usize) -> Self

Create a menu with a default item

Matches Borland: TMenu(itemList, deflt)

pub fn add(&mut self, item: MenuItem)

Add an item to the menu

Matches Borland: appending to TMenuItem linked list

pub fn find_hotkey(&self, key_code: KeyCode) -> Option<CommandId>

Find the command bound to a keyboard shortcut, searching submenus.

Matches Borland: TMenuView::findHotKey() — lets item shortcuts like F2 work while the menu is closed.

pub fn set_default(&mut self, index: usize)

Set the default item by index

pub fn len(&self) -> usize

Get the number of items

pub fn is_empty(&self) -> bool

Check if menu is empty

Trait Implementations

impl Clone for Menu

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Menu

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Menu

fn default() -> Self

Returns the “default value” for a type.