Struct FocusRoundTripProbe 

pub struct FocusRoundTripProbe { /* private fields */ }

Records focus callbacks reached through a widget’s resolved crate::FocusRequest.

Implementations

impl FocusRoundTripProbe

pub fn new() -> Self

Creates an empty focus probe.

pub fn on_focus(&self) -> Callback<()>

Returns the callback the widget should register for its actual control.

pub fn assert_focus_round_trip(&self)

Asserts that one producer focus request reached the widget control callback.

Panics

Panics when the focus callback was omitted or invoked more than once.

Trait Implementations

impl Clone for FocusRoundTripProbe

fn clone(&self) -> FocusRoundTripProbe

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FocusRoundTripProbe

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

Formats the value using the given formatter.

impl Default for FocusRoundTripProbe

fn default() -> FocusRoundTripProbe

Returns the “default value” for a type.

impl PartialEq for FocusRoundTripProbe

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

Equality operator ==.

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

Inequality operator !=.