Trait A11yBridge 

pub trait A11yBridge: Send {
    // Required methods
    fn publish_tree(&mut self, nodes: &[SemNode]);
    fn focus_changed(&mut self, node: Option<&SemNode>);
    fn announce(&mut self, msg: &str);
}

Bridge from Repose’s semantics tree to platform accessibility APIs.

Implementations are responsible for:

• Exposing nodes to the OS (AT‑SPI, Android accessibility, etc.).
• Updating focus when focus_changed is called.
• Announcing transient messages (e.g. button activation) via screen readers.

Required Methods

fn publish_tree(&mut self, nodes: &[SemNode])

Publish (or update) the full semantics tree for the current frame.

fn focus_changed(&mut self, node: Option<&SemNode>)

Notify that the focused node has changed. None means focus cleared.

fn announce(&mut self, msg: &str)

Announce a one‑off message via the platform’s accessibility channel.

Implementors