import 'dart:html' as html;

void setupBackButtonHandler(Function showDialogCallback) {
  // Push a dummy state so back button triggers popstate instead of navigating
  html.window.history.pushState(null, 'home', html.window.location.href);

  html.window.onPopState.listen((event) {
    showDialogCallback();
    // Re-push to prevent leaving
    html.window.history.pushState(null, 'home', html.window.location.href);
  });
}