Module focus 

Focus-event report sequences.

Category

When focus tracking is enabled, terminals send CSI I on focus gain and CSI O on focus loss. The constants expose those inbound byte sequences, and the writers can replay them in tests or recordings.

CSI conventions

Both reports use the 7-bit CSI introducer with no parameters: ESC [ I and ESC [ O.

Mode interaction

Focus reports are controlled by Mode::FOCUS (DEC private mode 1004). Applications enable the mode with crate::ansi::mode::write_set_mode and then parse these reports from input.

Constants

BLUR

Focus-lost report: exact bytes ESC [ O (b"\x1b[O").

FOCUS

Focus-gained report: exact bytes ESC [ I (b"\x1b[I").

Functions

write_blur

Write the focus-lost report bytes ESC [ O.

write_focus

Write the focus-gained report bytes ESC [ I.