Struct TypingSimulator 

pub struct TypingSimulator { /* private fields */ }

Simulates human-like typing using Input.dispatchKeyEvent CDP commands.

Each character is dispatched as a keyDown → char → keyUp sequence. Capital letters include the Shift modifier mask (modifiers = 8). A configurable error rate causes occasional typos that are corrected via Backspace before the intended character is retyped. Inter-key delays follow a Gaussian distribution (~80 ms mean, 25 ms σ) clamped to 30–200 ms.

Example

use stygian_browser::behavior::TypingSimulator;
let mut typer = TypingSimulator::new();
typer.type_text(page, "Hello, world!").await?;

Implementations

impl TypingSimulator

pub fn new() -> Self

Create a typing simulator seeded from wall-clock time.

Example

use stygian_browser::behavior::TypingSimulator;
let typer = TypingSimulator::new();

pub const fn with_seed(seed: u64) -> Self

Create a typing simulator with a fixed seed (useful for testing).

Example

use stygian_browser::behavior::TypingSimulator;
let typer = TypingSimulator::with_seed(42);

pub const fn with_error_rate(self, rate: f64) -> Self

Set the per-character typo probability (clamped to 0.0–1.0).

Default is 0.015 (1.5 %).

Example

use stygian_browser::behavior::TypingSimulator;
let typer = TypingSimulator::new().with_error_rate(0.0);

pub fn keystroke_delay(&mut self) -> Duration

Sample a realistic inter-keystroke delay (Gaussian, ~80 ms mean).

The returned value is clamped to the range 30–200 ms.

Example

use stygian_browser::behavior::TypingSimulator;
let mut typer = TypingSimulator::with_seed(1);
let delay = typer.keystroke_delay();
assert!(delay.as_millis() >= 30 && delay.as_millis() <= 200);

pub async fn type_text(&mut self, page: &Page, text: &str) -> Result<()>

Type text into the focused element with human-like keystrokes.

Each character produces keyDown → char → keyUp events. With probability error_rate a wrong adjacent key is typed first, then corrected with Backspace. Word boundaries (space or newline) receive an additional 100–400 ms pause to simulate natural word-completion rhythm.

Errors

Returns BrowserError::CdpError if any CDP call fails.

Trait Implementations

impl Default for TypingSimulator

fn default() -> Self

Returns the “default value” for a type.