Trait UiPlugin 

pub trait UiPlugin: Sized + 'static {
    // Required methods
    fn activate(cx: &mut Context) -> Self;
    fn frame(&mut self, frame: &Frame);

    // Provided methods
    fn event(&mut self, event: Event, cx: &mut Context) { ... }
    fn deactivate(&mut self) { ... }
}

A UI plugin: one instance runs in every viewer on the account.

It paints its crate::Surfaces and reads account state; it is side-effect free. Anything that must happen once (a write, a notification, a request) is either claimed first (claims) or asked of a companion daemon (calls); crate::view::is_driving says whether the user is controlling this viewer.

Required Methods

fn activate(cx: &mut Context) -> Self

Called once after instantiation. Create surfaces and read the configuration here.

fn frame(&mut self, frame: &Frame)

Called when a paced frame is due and one of the plugin’s surfaces is visible. Paint, commit, and say when the next frame is wanted (Frame::request_frame, Frame::wake_at); asking for nothing waits for an event.

Provided Methods

fn event(&mut self, event: Event, cx: &mut Context)

Everything else the host tells the plugin. Surfaces are already rebound when a Event::Resize arrives.

fn deactivate(&mut self)

Called before the instance is dropped.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors