Struct HeadlessEventSource 

pub struct HeadlessEventSource { /* private fields */ }

A no-op event source for headless and test programs.

Returns a fixed terminal size, accepts feature changes silently, and never produces events. This allows the test helper to construct a Program without depending on crossterm or a real terminal.

Implementations

impl HeadlessEventSource

pub fn new(width: u16, height: u16, features: BackendFeatures) -> Self

Create a headless event source with the given terminal size.

Trait Implementations

impl BackendEventSource for HeadlessEventSource

type Error = Error

Platform-specific error type.

fn size(&self) -> Result<(u16, u16), Error>

Query current terminal dimensions (columns, rows).

fn set_features(&mut self, features: BackendFeatures) -> Result<(), Error>

Enable or disable terminal features (mouse, paste, focus, kitty keyboard).

fn poll_event(&mut self, _timeout: Duration) -> Result<bool, Error>

Poll for an available event, returning true if one is ready.

fn read_event(&mut self) -> Result<Option<Event>, Error>

Read the next available event, or None if none is ready.