Enum Event 

pub enum Event {
    None,
    Action(ActionBinding<()>),
    View(Intent),
}

What happens when one of a component’s events happens. Data, never a closure: an action reference, invoked through the door, or a view intent its host applies (a view-state update, or the action reference the host’s view attached to the event).

Variants

None

Nothing happens.

Action(ActionBinding<()>)

An exported action, invoked through the door; the host resolves its policy first.

View(Intent)

A view intent, queued for the host.

Implementations

impl Event

pub fn is_none(&self) -> bool

pub fn invokes(&self) -> Option<&ActionAddress>

The action the event runs, when it is bound to one.

impl Event

pub fn fire(&self, value: Option<Value>)

Queue a view intent, carrying value. An action is run through its widget’s emitter (Self::handler), which knows whether it is available.

pub fn handler(self) -> Option<Box<dyn FnMut()>>

The event as the handler of a widget that runs one when it happens: None for Event::None.

Trait Implementations

impl Clone for Event

fn clone(&self) -> Event

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Event

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Event

fn default() -> Event

Returns the “default value” for a type.