Enum DirectionalNavigationError

pub enum DirectionalNavigationError {
    NoFocus,
    NoNeighborInDirection {
        current_focus: Entity,
        direction: CompassOctant,
    },
}

An error that can occur when navigating between focusable entities using directional navigation.

Variants

NoFocus

No focusable entity is currently set.

NoNeighborInDirection

No neighbor in the requested direction.

Fields

current_focus: Entity

The entity that was the focus when the error occurred.

direction: CompassOctant

The direction in which the navigation was attempted.

Trait Implementations

impl Clone for DirectionalNavigationError

fn clone(&self) -> DirectionalNavigationError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DirectionalNavigationError

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

Formats the value using the given formatter.

impl Display for DirectionalNavigationError

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

Formats the value using the given formatter.

impl Error for DirectionalNavigationError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for DirectionalNavigationError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for DirectionalNavigationError