Trait AppAssistant

pub trait AppAssistant {
    // Required method
    fn setup(&mut self) -> Result<(), Error>;

    // Provided methods
    fn create_view_assistant(
        &mut self,
        _: ViewKey,
    ) -> Result<ViewAssistantPtr, Error> { ... }
    fn create_view_assistant_with_parameters(
        &mut self,
        params: ViewCreationParameters,
    ) -> Result<ViewAssistantPtr, Error> { ... }
    fn outgoing_services_names(&self) -> Vec<&'static str> { ... }
    fn handle_service_connection_request(
        &mut self,
        _service_name: &str,
        _channel: Channel,
    ) -> Result<(), Error> { ... }
    fn filter_config(&mut self, _config: &mut Config) { ... }
    fn handle_message(&mut self, message: Message) { ... }
}

Trait that a mod author must implement. Currently responsible for creating a view assistant when the Fuchsia view framework requests that the mod create a view.

Required Methods

fn setup(&mut self) -> Result<(), Error>

This method is responsible for setting up the AppAssistant implementation. It’s not clear if this is going to so useful, as anything that isn’t initialized in the creation of the structure implementing AppAssistant is going to have to be represented as an Option, which is awkward.

Provided Methods

fn create_view_assistant( &mut self, _: ViewKey, ) -> Result<ViewAssistantPtr, Error>

Called when the Fuchsia view system requests that a view be created, or once at startup when running without Scenic.

fn create_view_assistant_with_parameters( &mut self, params: ViewCreationParameters, ) -> Result<ViewAssistantPtr, Error>

Called when the Fuchsia view system requests that a view be created. Provides parameters to view creation that include anything provided the the view creation requestor and an AppSender.

fn outgoing_services_names(&self) -> Vec<&'static str>

Return the list of names of services this app wants to provide

fn handle_service_connection_request( &mut self, _service_name: &str, _channel: Channel, ) -> Result<(), Error>

Handle a request to connect to a service provided by this app

fn filter_config(&mut self, _config: &mut Config)

Filter Carnelian configuration at runtime, if needed.

fn handle_message(&mut self, message: Message)

This method is called when App::queue_message is called with Application as target.

Implementors