Enum DiscoveryEvent 

#[non_exhaustive]
pub enum DiscoveryEvent {
    PrinterAdded(PrinterSnapshot),
    PrinterRemoved {
        id: String,
        backend: String,
    },
    PrinterStateChanged {
        id: String,
        backend: String,
        state: PrinterState,
        accepting_jobs: bool,
    },
}

Available on crate feature zbus-backend only.

An event emitted during printer discovery or state monitoring.

Marked #[non_exhaustive] so a future backend event kind can be added without breaking downstream matches — always include a _ arm.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

PrinterAdded(PrinterSnapshot)

A printer was discovered or re-announced.

PrinterRemoved

A printer was removed from the backend.

Fields

id: String

The printer’s unique ID.

backend: String

The backend that reported the removal.

PrinterStateChanged

A printer’s state or accepting-jobs status changed.

Fields

id: String

The printer’s unique ID.

backend: String

The backend that reported the change.

state: PrinterState

The new state.

accepting_jobs: bool

Whether the printer is accepting new jobs.

Trait Implementations

impl Clone for DiscoveryEvent

fn clone(&self) -> DiscoveryEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DiscoveryEvent

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

Formats the value using the given formatter.

impl Eq for DiscoveryEvent

impl Hash for DiscoveryEvent

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DiscoveryEvent

fn eq(&self, other: &DiscoveryEvent) -> 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 DiscoveryEvent