Trait RequestOptionsAlg 

pub trait RequestOptionsAlg {
    // Required methods
    fn performer(&self) -> Performer;
    fn media_streams(&self) -> Option<MediaStreams>;
    fn chosen_choice(&self) -> Option<&str>;
    fn selectable_choices(&self) -> impl Iterator<Item = &str>;
    fn choice_summary(&self, choice: &str) -> Option<&str>;
}

Specifies what one request states about the media it selects.

Required Methods

fn performer(&self) -> Performer

Observes what performs the request.

fn media_streams(&self) -> Option<MediaStreams>

Observes the stream roles the request prefers, and that it chooses no media when it transfers something a media role says nothing about.

fn chosen_choice(&self) -> Option<&str>

Observes the one choice the request fixes, when it fixes one.

What the choices are depends on what the request transfers: one representation of a media item, or one way of transferring a folder. Either way, exactly one may be fixed.

fn selectable_choices(&self) -> impl Iterator<Item = &str>

Observes every choice the request offers, in the order it offers them.

A media item offers what extraction discovered, and its stream roles state which of them is preferred when none is fixed; they never hide one the source states. A folder offers every way it may be transferred.

fn choice_summary(&self, choice: &str) -> Option<&str>

Observes what one offered choice states about itself, when it states anything.

A choice a reader would not recognize by name says what it does; one described by what it carries is read through that description instead.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors