Struct Worker 

pub struct Worker { /* private fields */ }

Worker represents a Web Worker or Service Worker.

Workers are created by the page using the Worker constructor or by browsers for registered service workers. They run JS in an isolated global scope.

Example

use playwright_rs::protocol::Playwright;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let playwright = Playwright::launch().await?;
    let browser = playwright.chromium().launch().await?;
    let page = browser.new_page().await?;

    page.on_worker(|worker| {
        println!("Worker created: {}", worker.url());
        Box::pin(async move { Ok(()) })
    }).await?;

    browser.close().await?;
    Ok(())
}

See: https://playwright.dev/docs/api/class-worker

Implementations

impl Worker

pub fn new( parent: Arc<dyn ChannelOwner>, type_name: String, guid: Arc<str>, initializer: Value, ) -> Result<Self>

Creates a new Worker from protocol initialization.

Called by the object factory when the server sends a __create__ message for a Worker object.

pub fn url(&self) -> &str

Returns the URL of this worker.

See: https://playwright.dev/docs/api/class-worker#worker-url

pub async fn evaluate<R, T>( &self, expression: &str, arg: Option<T>, ) -> Result<R>

where R: DeserializeOwned, T: Serialize,

Evaluates a JavaScript expression in the worker context.

The expression is evaluated in the worker’s global scope. Returns the JSON-serializable result deserialized into type R.

Arguments

• expression - JavaScript expression or function body
• arg - Optional argument to pass to the expression

Errors

Returns an error if the JavaScript expression throws.

See: https://playwright.dev/docs/api/class-worker#worker-evaluate

pub async fn evaluate_handle(&self, expression: &str) -> Result<Arc<JSHandle>>

Evaluates a JavaScript expression in the worker context, returning a JSHandle.

Unlike evaluate which deserializes the result, this returns a live handle to the in-worker JavaScript object.

Arguments

• expression - JavaScript expression or function body

See: https://playwright.dev/docs/api/class-worker#worker-evaluate-handle

Trait Implementations

impl Clone for Worker

fn clone(&self) -> Worker

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Worker

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.