Class: Playwright::Worker

Inherits:
PlaywrightApi show all
Defined in:
lib/playwright_api/worker.rb

Overview

The Worker class represents a [WebWorker](developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API). worker event is emitted on the page object to signal a worker creation. close event is emitted on the worker object when the worker is gone.

“‘js page.on(’worker’, worker => 

console.log('Worker created: ' + worker.url());
worker.on('close', worker => console.log('Worker destroyed: ' + worker.url()));

);

console.log(‘Current workers:’); for (const worker of page.workers())

console.log('  ' + worker.url());

“‘

“‘py def handle_worker(worker):

print("worker created: " + worker.url)
worker.on("close", lambda: print("worker destroyed: " + worker.url))

page.on(‘worker’, handle_worker)

print(“current workers:”) for worker in page.workers:

print("    " + worker.url)

“‘

Instance Method Summary collapse

Methods inherited from PlaywrightApi

#==, from_channel_owner, #initialize

Constructor Details

This class inherits a constructor from Playwright::PlaywrightApi

Instance Method Details

#evaluate(pageFunction, arg: nil) ⇒ Object

Returns the return value of pageFunction

If the function passed to the worker.evaluate returns a [Promise], then worker.evaluate would wait for the promise to resolve and return its value.

If the function passed to the worker.evaluate returns a non- value, then worker.evaluate returns undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals.

Raises:

  • (NotImplementedError) 


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# File 'lib/playwright_api/worker.rb', line 39

def evaluate(pageFunction, arg: nil)
  raise NotImplementedError.new('evaluate is not implemented yet.')
end

#evaluate_handle(pageFunction, arg: nil) ⇒ Object

Returns the return value of pageFunction as in-page object (JSHandle).

The only difference between worker.evaluate and worker.evaluateHandle is that worker.evaluateHandle returns in-page object (JSHandle).

If the function passed to the worker.evaluateHandle returns a [Promise], then worker.evaluateHandle would wait for the promise to resolve and return its value.

Raises:

  • (NotImplementedError) 


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# File 'lib/playwright_api/worker.rb', line 50

def evaluate_handle(pageFunction, arg: nil)
  raise NotImplementedError.new('evaluate_handle is not implemented yet.')
end

#url ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/playwright_api/worker.rb', line 54

def url
  raise NotImplementedError.new('url is not implemented yet.')
end