Struct FocusGained 

pub struct FocusGained;

Listens for when an element or its descendants gain focus.

This event propagates through all three phases (capture, target, bubble), similar to standard DOM events. By default, event listeners using on_event only listen to target and bubble phases.

Filtering by Phase

To only respond when this specific element gains focus (not descendants):

view.on_event_stop(listener::FocusGained, |cx, _| {
    if cx.phase.is_target() {
        // Only this element gained focus
    }
});

Or configure which phases to listen to:

view.on_event_stop_with_config(
    listener::FocusGained,
    EventCallbackConfig { phases: Phases::TARGET },
    |cx, _| {
        // Only fires when this element itself gains focus
    }
);

To listen during capture phase (fires before descendants):

view.on_event_stop_with_config(
    listener::FocusGained,
    EventCallbackConfig { phases: Phases::CAPTURE },
    |cx, _| {
        // Fires before any descendant receives the event
    }
);

Trait Implementations

impl Clone for FocusGained

fn clone(&self) -> FocusGained

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for FocusGained

fn default() -> FocusGained

Returns the “default value” for a type.

impl EventListenerTrait for FocusGained

type EventData = ()

The type of event data this listener extracts

fn listener_key() -> EventListenerKey

fn extract(event: &Event) -> Option<&Self::EventData>

where Self::EventData: Sized,

Extract and downcast to the specific event type

impl Copy for FocusGained