Struct Selection 

pub struct Selection {
    pub focused_row: Option<usize>,
    pub focused_leg: LegFocus,
}

The focused underlying/expiry/strike selection (docs/02-tui-architecture.md §3). The typed cursor the chain matrix (#18) drives: the focused strike row and the focused leg on it. Expiry/underlying navigation emits a Command rather than living here.

Fields

focused_row: Option<usize>

The focused strike-row index within the visible chain, or None before any row is focused. Draw reads it with .get() + a fallback — never an unchecked index — and clamps it to the current strike count, so a poll that shrank the chain never yields an out-of-range cursor.

focused_leg: LegFocus

The focused option leg on the selected strike row, toggled by c / p (docs/05-views-and-ux.md §3). Defaults to the call leg.

Trait Implementations

impl Clone for Selection

fn clone(&self) -> Selection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Selection

impl Debug for Selection

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

Formats the value using the given formatter.

impl Default for Selection

fn default() -> Selection

Returns the “default value” for a type.

impl Eq for Selection

impl PartialEq for Selection

fn eq(&self, other: &Selection) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Selection