module Symbiont
  module Evaluators
    
    def visit(url)
      platform.visit(url)
    end
    
    def text
      platform.text
    end
    
    def markup
      platform.markup
    end
    
    alias_method :html, :markup
    
    def title
      platform.title
    end
    
    def url
      platform.url
    end
    
    # Save a snapshot of the current screen to a provided file location.
    # The file will be saved as a PNG file in the path specified or in the
    # location where the tests are being run from.
    def screenshot(file)
      platform.screenshot file
    end    
    
    def focus
      platform.focus
    end

    alias_method :what_has_focus?, :focus

    # Executes JavaScript against the browser instance.
    def run_script(script)
      platform.run_script(script)
    end
    
    alias_method :execute_script, :run_script

    def back
      platform.back
    end

    # Provides an evaluator that attempts to wait for any pending AJAX
    # requests from the jQuery library.
    def wait_for_pending_requests(time_limit=30, message_if_timeout=nil)
      end_time = ::Time.now + time_limit
      until ::Time.now > end_time
        begin
          return if browser.execute_script('return jQuery.active') == 0
        rescue ReferenceError
        end
        sleep 0.5
      end
      message = "Pending jQuery requests never indicated completion." unless message_if_timeout
      raise message
    end
    
  end # module: Evaluators
end # module: Symbiont