src/Pure/System/gui_setup.scala

explicit import java.lang.System to prevent odd scope problems;

/*  Title:      Pure/System/gui_setup.scala
    Author:     Makarius

GUI for basic system setup.
*/

package isabelle

import java.lang.System

import scala.swing.{Button, FlowPanel, BorderPanel, MainFrame, TextArea, SwingApplication}
import scala.swing.event.ButtonClicked


object GUI_Setup extends SwingApplication
{
  def startup(args: Array[String]) =
  {
    Platform.init_laf()
    top.pack()
    top.visible = true
  }

  def top = new MainFrame {
    title = "Isabelle setup"

    // components
    val text = new TextArea {
      editable = false
      columns = 80
      rows = 20
    }
    val ok = new Button { text = "OK" }
    val ok_panel = new FlowPanel(FlowPanel.Alignment.Center)(ok)

    val panel = new BorderPanel
    panel.layout(text) = BorderPanel.Position.Center
    panel.layout(ok_panel) = BorderPanel.Position.South
    contents = panel

    // values
    if (Platform.is_windows)
      text.append("Cygwin root: " + Cygwin.check_root() + "\n")
    text.append("JVM name: " + Platform.jvm_name + "\n")
    text.append("JVM platform: " + Platform.jvm_platform + "\n")
    try {
      val isabelle_system = Isabelle_System.default
      text.append("ML platform: " + isabelle_system.getenv("ML_PLATFORM") + "\n")
      text.append("Isabelle platform: " + isabelle_system.getenv("ISABELLE_PLATFORM") + "\n")
      val platform64 = isabelle_system.getenv("ISABELLE_PLATFORM64")
      if (platform64 != "") text.append("Isabelle platform (64 bit): " + platform64 + "\n")
      text.append("Isabelle home: " + isabelle_system.getenv("ISABELLE_HOME") + "\n")
      text.append("Isabelle java: " + isabelle_system.this_java() + "\n")
    } catch {
      case e: RuntimeException => text.append(e.getMessage + "\n")
    }

    // reactions
    listenTo(ok)
    reactions += {
      case ButtonClicked(`ok`) => System.exit(0)
    }
  }
}