Struct HeaderlineProvider 

pub struct HeaderlineProvider { /* private fields */ }

VirtualRowProvider that emits one sticky row above line 0 from any Headerline impl.

Register this the same way as any other provider. The row is hidden (empty collect() result) when the impl returns None from render().

Implementations

impl HeaderlineProvider

pub fn new(provider_id: ProviderId, inner: Arc<dyn Headerline>) -> Self

Wrap any Headerline impl directly (e.g. when the mode implements the trait on its own existing state struct).

Trait Implementations

impl Debug for HeaderlineProvider

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

Formats the value using the given formatter.

impl VirtualRowProvider for HeaderlineProvider

fn id(&self) -> ProviderId

A stable id for this provider. Used by the worker to deduplicate registration + route mutation notifications.

fn version(&self) -> u64

Monotonic version counter — the provider bumps it whenever the rows Self::collect would emit have changed. The worker uses the combined fingerprint of all providers’ versions to short-circuit on the cache-hit path without paying for the (potentially expensive) collect calls.

fn collect(&self) -> Vec<VirtualRow>

Emit the current set of virtual rows for the associated document.