[jruby-user] DOM manipulation

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Hello...

I=C2=B4m trying to manipulate the DOM directly through JRubyFX, but I=C2=B4=
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 =3D WebView.new
    web_engine =3D browser.getEngine()
    # get the window
    window =3D web_engine.executeScript("window")
    # get the HTMLDocument
    document =3D window.eval("document")

    // Loads a very simple HTML file that just shows the words 'hello world=
'
    f =3D Java::JavaIo.File.new("simple.html")

    fil =3D f.toURI().toURL().toString()
    web_engine.load(fil)
    web_engine.setJavaScriptEnabled(true)

    elmts =3D document.body.getElementsByTagName("*")
    p elmts // #<Java::ComSunWebkitDom::NodeListImpl:0x1cf5189>
    p elmts.getLength() // 0: no elements

    elm =3D document.getElementsByClassName("body")
    p elm.getLength() // 0: no body

    para =3D document.createElement("p")
    node =3D document.createTextNode("This is new")
    para.appendChild(node)

    elmts =3D 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,

--=20
Rodrigo Botafogo

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<div dir=3D"ltr">Hello...<div><br></div><div>I=C2=B4m trying to manipulate =
the DOM directly through JRubyFX, but I=C2=B4m not getting it right.=C2=A0 =
Here is my code (which is basically what I found on JRubyFX wiki):</div><di=
v><br></div><div><br></div><div><br></div><div><div>require &#39;jrubyfx&#3=
9;</div><div><br></div><div>class HelloWorldApp &lt; JRubyFX::Application</=
div><div><br></div><div>=C2=A0 def start(stage)</div><div><br></div><div>=
=C2=A0 =C2=A0 browser =3D WebView.new</div><div>=C2=A0 =C2=A0 web_engine =
=3D browser.getEngine()</div><div>=C2=A0 =C2=A0 # get the window</div><div>=
=C2=A0 =C2=A0 window =3D web_engine.executeScript(&quot;window&quot;)</div>=
<div>=C2=A0 =C2=A0 # get the HTMLDocument</div><div>=C2=A0 =C2=A0 document =
=3D window.eval(&quot;document&quot;)</div><div><br></div><div>=C2=A0 =C2=
=A0 // Loads a very simple HTML file that just shows the words &#39;hello w=
orld&#39;</div><div>=C2=A0 =C2=A0 f =3D Java::JavaIo.File.new(&quot;simple.=
html&quot;)<br></div><div><br></div><div>=C2=A0 =C2=A0 fil =3D f.toURI().to=
URL().toString()</div><div>=C2=A0 =C2=A0 web_engine.load(fil)</div><div>=C2=
=A0 =C2=A0 web_engine.setJavaScriptEnabled(true)</div><div><br></div><div>=
=C2=A0 =C2=A0 elmts =3D document.body.getElementsByTagName(&quot;*&quot;)</=
div><div>=C2=A0 =C2=A0 p elmts //=C2=A0#&lt;Java::ComSunWebkitDom::NodeList=
Impl:0x1cf5189&gt;</div><div>=C2=A0 =C2=A0 p elmts.getLength() // 0: no ele=
ments</div><div><br></div><div>=C2=A0 =C2=A0 elm =3D document.getElementsBy=
ClassName(&quot;body&quot;)</div><div>=C2=A0 =C2=A0 p elm.getLength() // 0:=
 no body</div><div><br></div><div>=C2=A0 =C2=A0 para =3D document.createEle=
ment(&quot;p&quot;)</div><div>=C2=A0 =C2=A0 node =3D document.createTextNod=
e(&quot;This is new&quot;)</div><div>=C2=A0 =C2=A0 para.appendChild(node)</=
div><div><br></div><div>=C2=A0 =C2=A0 elmts =3D document.body.getElementsBy=
TagName(&quot;*&quot;)</div><div>=C2=A0 =C2=A0 p elmts //=C2=A0#&lt;Java::C=
omSunWebkitDom::NodeListImpl:0x11d2018&gt;</div><div>=C2=A0 =C2=A0 p elmts.=
getLength() =C2=A0// still prints 0</div><div><br></div><div>=C2=A0 =C2=A0 =
with(stage, title: &quot;Hello World!&quot;, width: 800, height: 600) do</d=
iv><div>=C2=A0 =C2=A0 =C2=A0 layout_scene do</div><div>=C2=A0 =C2=A0 =C2=A0=
 =C2=A0 browser =C2=A0// opens a browser windows with a string</div><div>=
=C2=A0 =C2=A0 =C2=A0 end</div><div>=C2=A0 =C2=A0 end</div><div><br></div><d=
iv>=C2=A0 =C2=A0 stage.show # Tip: most of the time, () can be removed from=
 method calls</div><div><br></div><div>=C2=A0 end</div><div><br></div><div>=
end</div><div><br></div><div>HelloWorldApp.launch</div><div><br></div><div>=
<br></div><div>Any hint is appreciated!</div><div><br></div><div><br></div>=
<div>Thanks,</div><div><br></div>-- <br><div class=3D"gmail_signature"><div=
 dir=3D"ltr">Rodrigo Botafogo<div><br><br><div><br></div></div></div></div>
</div></div>

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