Enum NavigationEventListenerRequest

pub enum NavigationEventListenerRequest {
    OnNavigationStateChanged {
        change: NavigationState,
        responder: NavigationEventListenerOnNavigationStateChangedResponder,
    },
}

Interface supplied by the embedder for receiving notifications about navigation events in a [Frame].

Variants

OnNavigationStateChanged

Called immediately after [Frame.SetNavigationEventListener] and every time user-visible navigation state has changed. In the first call, change contains the current navigation state (empty before the first navigation request). In every following call, change will have values set for all fields that have changed at any time since the previous notification. This means that some fields may have the same value as was previously reported, for example, if they changed to some other value and back again. If a field is unset, then its value has not changed at any time since the previous notification.

Implementer must call the acknowledgement callback to receive new navigation events.

Fields

change: NavigationState

responder: NavigationEventListenerOnNavigationStateChangedResponder

Implementations

impl NavigationEventListenerRequest

pub fn into_on_navigation_state_changed( self, ) -> Option<(NavigationState, NavigationEventListenerOnNavigationStateChangedResponder)>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for NavigationEventListenerRequest

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

Formats the value using the given formatter.