override val root = form {
        fieldset {
            field("file") {
                textfield(filename)
                button("select file") {
                    setOnAction {
                        val fc = FileChooser().apply {
                            extensionFilters.add(FileChooser.ExtensionFilter("Keepass file", "*.kdbx", "*.KDBX"))
                        }.showOpenDialog(null)
                        filename.value = fc?.absolutePath
                        println(filename)
                    }
                }
            }
            field("pass phrase") {
                passwordfield(passphrase)
            }
            button("open") {
                isDefaultButton = true
                setOnAction {
                    if (filename.value.isNotEmpty() && passphrase.value.isNotEmpty()) {
                        println("opening $filename with $passphrase")
                    }
                }
            }
        }