Trait druid::widget::ScopeTransfer

pub trait ScopeTransfer {
    type In: Data;
    type State: Data;
    pub fn read_input(&self, state: &mut Self::State, inner: &Self::In);
    pub fn write_back_input(&self, state: &Self::State, inner: &mut Self::In);
}

A ScopeTransfer knows how to synchronise input data with its counterpart within a Scope.

It is separate from the policy mainly to allow easy use of lenses to do synchronisation, with a custom ScopePolicy.

Associated Types

type In: Data

The type of data that comes in from the surrounding application or scope.

type State: Data

The type of data that the Scope will maintain internally.

Loading content...

Required methods

pub fn read_input(&self, state: &mut Self::State, inner: &Self::In)

Replace the input we have within our State with a new one from outside

pub fn write_back_input(&self, state: &Self::State, inner: &mut Self::In)

Take the modifications we have made and write them back to our input.

Loading content...

Implementors

impl<L: Lens<State, In>, In: Data, State: Data> ScopeTransfer for LensScopeTransfer<L, In, State>

type In = In

type State = State

pub fn read_input(&self, state: &mut State, data: &In)

pub fn write_back_input(&self, state: &State, data: &mut In)

Loading content...