input_pipeline::display_ownership

Struct DisplayOwnership

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pub struct DisplayOwnership { /* private fields */ }
Expand description

A handler that turns the input pipeline off or on based on whether the Scenic owns the display.

This allows us to turn off keyboard processing when the user switches away from the product (e.g. terminal) into virtual console.

See the README.md file in this crate for details.

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impl DisplayOwnership

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pub fn new( display_ownership_event: impl AsHandleRef + 'static, input_handlers_node: &Node, ) -> Rc<Self>

Creates a new handler that watches display_ownership_event for events.

The display_ownership_event is assumed to be an [Event] obtained from Scenic using fuchsia.ui.scenic.Scenic/GetDisplayOwnershipEvent. There isn’t really a way for this code to know here whether this is true or not, so implementor beware.

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pub async fn handle_input_events( self: &Rc<Self>, input: UnboundedReceiver<InputEvent>, output: UnboundedSender<InputEvent>, ) -> Result<()>

Run this function in an executor to handle events.

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pub fn set_handler_healthy(self: Rc<Self>)

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pub fn set_handler_unhealthy(self: Rc<Self>, msg: &str)

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