Trait ProviderLookup 

pub trait ProviderLookup {
    // Required method
    fn has_provider(&self, mode: ModeId) -> bool;
}

Renderer-supplied “is this mode registered?” probe. Each renderer implements this trait on its own typed pane-render registry; the host walks modes via resolve_pane_render_mode and asks the probe whether the candidate ModeId has a provider.

Kept deliberately minimal (one boolean method) so the host’s algorithm carries no renderer-specific shape and the renderer’s registry stays free to hold native-typed fn-pointers without trait-object overhead on the paint hot path.

Required Methods

fn has_provider(&self, mode: ModeId) -> bool

True when mode has a registered pane-render provider.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors