Trait DataContext 

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

    // Provided methods
    fn data<T>(&self) -> &T
       where T: 'static { ... }
    fn localization_context(&self) -> Option<LocalizationContext<'_>> { ... }
}

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

This lets resource reads be generic over any of these types.

Required Methods

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

where T: 'static,

Get model/view data from the context. Panics if the data does not exist.

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 LocalizationContext<'_>

impl DataContext for Context

impl DataContext for DrawContext<'_>

impl DataContext for EventContext<'_>

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