Struct DummyFetchProvider 

pub struct DummyFetchProvider;

A FetchProvider that answers every request with FetchError::NoProvider.

It answers rather than doing nothing, which is where it differs from DummyNetProvider, and the difference is deliberate. A dropped resource load leaves an image unpainted, which is visible and survivable. A dropped fetch leaves the guest waiting on an answer that will never come, and a guest awaiting a promise that never settles is indistinguishable from a hang. So the no-op provider here fails fast instead of going quiet.

Trait Implementations

impl Default for DummyFetchProvider

fn default() -> Self

Returns the “default value” for a type.

impl FetchProvider for DummyFetchProvider

fn fetch(&self, _request: FetchRequest, handler: Box<dyn FetchHandler>)