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text(_ emitTo signal)

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implicit def bindableText(text: Text): Target[String] = {
    new Target[String] {
      def bind(value: Signal[String]) = observe(value) { newValue =>
        text.setText(newValue)
        true // keep observing
      }
    }
  }

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implicit def textToSource(text: Text): Source[String] = {
    new Source[String] {
      override def emitTo(channel: Var[String]) {
        text.addModifyListener(new ModifyListener() {
          override def modifyText(event: ModifyEvent) = {
            channel.update(text.getText)
          }
        })
      }
    }

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def textbox(output: Var[String])(setups: (Text => Any)*)(parent: Composite) = {
    val text = new Text(parent, SWT.BORDER)
    text setText (output.now)
    text emitTo output
    setupAndReturn(text, setups)
  }

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object Temperature {
  implicit def unboxText2Double(s: String) = if (s != "") java.lang.Double.parseDouble(s) else 0.0
  implicit def convertDouble2String(d: Double) = d.toString

  val fahrenheit = new Var[String]("0")
  val celsius = new Var[String]("0")

  val calcCelsius = Signal {
    ((5.0 / 9.0) * (fahrenheit() - 32)) toString
  }

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implicit def bindableText(text: Text): Target[String] = {
    new Target[String] {
      def bind(value: Signal[String]) = observe(value) { newValue =>
        if (!text.isFocusControl) // don't update the text that's editing
          text.setText(newValue)
        true // keep observing
      }
    }
  }

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// outer scope
val myOutputSignal = Var[String]("")

// setup
textbox(signal)

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text bind signal

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-startup
../../../plugins/org.eclipse.equinox.launcher_1.1.1.R36x_v20101122_1400.jar
--launcher.library
../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.2.R36x_v20101019_1345
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile

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trait DateParsers extends RegexParsers {
	  def dateTime(pattern: String): Parser[DateTime] = new Parser[DateTime] {
	    val dateFormat = DateTimeFormat.forPattern(pattern)
	    val dateParser = dateFormat.getParser
	    
	    def jodaParse(text: CharSequence, offset: Int) = {
	      val mutableDateTime = new MutableDateTime
	      val newPos = dateFormat.parseInto(mutableDateTime, text, offset);
	      (mutableDateTime.toDateTime, newPos)
	    }