Struct EnvelopeFilterCallbacks 

pub struct EnvelopeFilterCallbacks<F, C> { /* private fields */ }

A container for callbacks that can be passed to Envelope::filter.

Implementations

impl<F, C> EnvelopeFilterCallbacks<F, C>

pub fn new(filter: F, on_filtered: C) -> EnvelopeFilterCallbacks<F, C>

Create a new EnvelopeFilterCallbacks.

filter will be called to determine whether the envelope items should be kept. on_filtered will be called on all envelope items which are then dropped.

Trait Implementations

impl<F, C> EnvelopeFilter for EnvelopeFilterCallbacks<F, C>

where F: FnMut(&EnvelopeItem) -> bool, C: FnMut(EnvelopeItem),

fn filter(&mut self, item: &EnvelopeItem) -> bool

The function used to filter the envelopes.

fn on_filtered(&mut self, item: EnvelopeItem)

A callback which is called with all items removed by filtering, including items for which Self::filter had returned true, such as no-longer-applicable attachments.