// main.wren
import "gtk" for Gtk, Window, Box, Button, Entry, Label

// Optional: your host can still expose this to quit if needed, but not required here
// foreign class Host { foreign static signalDone() }

var ui = Fiber.new {
  Gtk.init()

  var win   = Window.new("Wren + GTK", 420, 200)
  var root  = Box.vbox(8)
  var info  = Label.new("Type something and click the button:")
  var entry = Entry.new()
  var btn   = Button.new("Say hi")

  root.packStart(info, false, false, 0)
  root.packStart(entry, false, false, 0)
  root.packStart(btn,  false, false, 0)

  win.add(root)

  // Quit the app when the window is closed
  win.onDestroy { Gtk.quit() }

  // Update the label with the current entry text
  btn.onClicked {
    info.setText("You typed: " + entry.text)
  }

  // Also submit on Enter key in the entry
  entry.onActivate {
    info.setText("Enter pressed: " + entry.text)
  }

  win.showAll()
  Gtk.run()
  // Host.signalDone() // if you want to tell your C host to exit
}

ui.call()