Struct EventHandler 

pub struct EventHandler { /* private fields */ }

Handles crossterm event reading and dispatches AppEvents.

Implementations

impl EventHandler

pub fn new(tick_rate: Duration) -> Self

Create a new event handler with the given tick rate.

pub fn sender(&self) -> UnboundedSender<AppEvent>

Get a clone of the sender for external event producers (agent, tools).

pub fn start(&self)

Start the crossterm event reader loop.

Uses crossterm’s async EventStream for zero-latency event delivery.

Includes a debounce state machine that distinguishes touchpad/mouse scroll (rapid-fire Up/Down arrows via xterm alternate scroll mode \x1b[?1007h) from keyboard arrow presses. Touchpad scroll generates arrows every 8-16ms in bursts; keyboard presses are single events with ~300ms before repeat. A 25ms debounce window cleanly separates these two input sources.

Also handles mouse events (click/drag/up for selection, scroll for terminals that support mouse reporting) and FocusGained for triggering redraws.

pub async fn next(&mut self) -> Option<AppEvent>

Receive the next event.

pub fn try_next(&mut self) -> Option<AppEvent>

Try to receive an event without blocking. Returns None immediately if no event is queued.