Class: Puppeteer::Page::ScreenshotTaskQueue

Inherits:
Object
  • Object
show all
Defined in:
lib/puppeteer/page/screenshot_task_queue.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ScreenshotTaskQueue

Returns a new instance of ScreenshotTaskQueue.



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# File 'lib/puppeteer/page/screenshot_task_queue.rb', line 3

def initialize
  @chain = Async::Promise.new.tap { |promise| promise.resolve(nil) }
end

Instance Method Details

#post_task(&block) ⇒ Object 



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# File 'lib/puppeteer/page/screenshot_task_queue.rb', line 7

def post_task(&block)
  previous = @chain
  result_promise = Async::Promise.new
  @chain = result_promise

  Async do
    previous.wait
    result = block.call
    result_promise.resolve(result)
  rescue => err
    result_promise.reject(err)
  end

  result_promise.wait
end