[jruby-user] DOM manipulation

[Rodrigo Botafogo]

Hello...

I´m trying to manipulate the DOM directly through JRubyFX, but I´m not getting it right.  Here is my code (which is basically what I found on JRubyFX wiki):

require 'jrubyfx'

class HelloWorldApp < JRubyFX::Application

  def start(stage)

    browser = WebView.new

    web_engine = browser.getEngine()

    # get the window

    window = web_engine.executeScript("window")

    # get the HTMLDocument

    document = window.eval("document")

    // Loads a very simple HTML file that just shows the words 'hello world'

    f = Java::JavaIo.File.new("simple.html")

    fil = f.toURI().toURL().toString()

    web_engine.load(fil)

    web_engine.setJavaScriptEnabled(true)

    elmts = document.body.getElementsByTagName("*")

    p elmts // #<Java::ComSunWebkitDom::NodeListImpl:0x1cf5189>

    p elmts.getLength() // 0: no elements

    elm = document.getElementsByClassName("body")

    p elm.getLength() // 0: no body

    para = document.createElement("p")

    node = document.createTextNode("This is new")

    para.appendChild(node)

    elmts = document.body.getElementsByTagName("*")

    p elmts // #<Java::ComSunWebkitDom::NodeListImpl:0x11d2018>

    p elmts.getLength()  // still prints 0

    with(stage, title: "Hello World!", width: 800, height: 600) do

      layout_scene do

        browser  // opens a browser windows with a string

      end

    end

    stage.show # Tip: most of the time, () can be removed from method calls

  end

end

HelloWorldApp.launch

Any hint is appreciated!

Thanks,

--

Rodrigo Botafogo