Working mods to komax javafx service example

gistfile1.txt

# See: http://docs.oracle.com/javafx/2/threads/jfxpub-threads.htm

require 'jrubyfx'
require 'open-uri'

class FirstLineURLTask < Java::javafx.concurrent.Task

  attr_accessor :url

	#def initialize(url)
	#	@url = url
	#end


	def call
		puts "calling"
		puts "Url is: #{@url}"
		first_line = open(@url) do |f|
			puts "reading line"
			f.readline
		end
		puts first_line.inspect
		return first_line

		#puts "Url is: #{@url}"
		#(1..5).each { |ea| puts "#{ea}"  }
		#'hi there'
	end
end

class FirstLineService < Java::javafx.concurrent.Service
	include JRubyFX

	attr_accessor :url

	protected
	def createTask
		 task = FirstLineURLTask.new
		 task.url  = @url
		 task
	end
end

class FirstLineServiceApp < JRubyFX::Application
	def start(stage)
		service = FirstLineService.new
		service.url = "http://google.com"
		service.setOnSucceeded { puts "done" }
		service.start()
		with(stage,
							title: "Service Demo: Retrieves first line of URL in background", width: 300, height: 150) do
			layout_scene do
				label(id: "result", text: "working")
			end
		end
		stage.show
	end
end

FirstLineServiceApp.launch
# This now works with some mods

# There seems to be an issue with "cascaded " calls to initialize and possibly the call to super in the subsequent
# initialize i.e. Service construction then subsequent Task construction , got rid of those that got me past the
# error below. However , the open uri called was failing since the string property was being passed as opposed to the
# string for the url. BTW, This was just getting stuck in IDEA i.e. no crash
# Since there was no binding being setup in this example I simply got rid of the
# property_accessor / StringProperty use, and just captured the url in a straight Ruby inst var

 #Prior error and comment from komax
# I'll get
=begin
% jruby url_service_demo.rb
Exception running Application:
#<ArgumentError: wrong number of arguments (1 for 0)>
url_service_demo.rb:39:in `start'
/home/max/Programmierung/gsoc/jruby/lib/ruby/gems/shared/gems/jrubyfx-1.0.0-java/lib/jrubyfx/java_fx_impl.rb:120:in `launch_app_after_platform'
org/jruby/gen/InterfaceImpl299080017.gen:13:in `run'
=end