Trait DataContext

pub trait DataContext {
    // Required method
    fn data<T>(&self) -> Option<&T>
       where T: 'static;

    // Provided method
    fn localization_context(&self) -> Option<LocalizationContext<'_>> { ... }
}

A trait for any Context-like object that lets you access stored model data.

This lets e.g Lens::get be generic over any of these types.

Required Methods

fn data<T>(&self) -> Option<&T>

where T: 'static,

Get model/view data from the context. Returns None if the data does not exist.

Provided Methods

fn localization_context(&self) -> Option<LocalizationContext<'_>>

Convert the current context into a LocalizationContext.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl DataContext for Context

impl DataContext for DrawContext<'_>

impl DataContext for EventContext<'_>

impl DataContext for LocalizationContext<'_>

impl<V> DataContext for Handle<'_, V>