alert function
Implementation
void alert([String message = ""]) {
Dialog alertDialog = Dialog("Alert", [Text(message)]);
alertDialog
..showDialog()
..okButton.focus()
..dialogBackdrop.onClick.first.then((_) => alertDialog.closeDialog());
querySelectorAll(".modal button").forEach((Element buttons) {
buttons.onClick.first.then((e) => alertDialog.closeDialog());
buttons.onKeyDown.listen((e) {
if (e.keyCode == KeyCode.ESC) {
alertDialog.closeDialog();
}
});
});
}