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      break;
    case WEBVIEW_DIALOG_FLAG_WARNING:
      type = GTK_MESSAGE_WARNING;
      break;
    case WEBVIEW_DIALOG_FLAG_ERROR:
      type = GTK_MESSAGE_ERROR;
      break;
    }
    dlg = gtk_message_dialog_new(GTK_WINDOW(w->priv.window), GTK_DIALOG_MODAL,
                                 type, GTK_BUTTONS_OK, "%s", title);
    gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dlg), "%s",
                                             arg);
    gtk_dialog_run(GTK_DIALOG(dlg));
    gtk_widget_destroy(dlg);
  }
}

static void webview_eval_finished(GObject *object, GAsyncResult *result,
                                  gpointer userdata) {
  (void)object;
  (void)result;
  struct webview *w = (struct webview *)userdata;
  w->priv.js_busy = 0;
}

WEBVIEW_API int webview_eval(struct webview *w, const char *js) {
  while (w->priv.ready == 0) {
    g_main_context_iteration(NULL, TRUE);
  }
  w->priv.js_busy = 1;
  webkit_web_view_run_javascript(WEBKIT_WEB_VIEW(w->priv.webview), js, NULL,
                                 webview_eval_finished, w);
  while (w->priv.js_busy) {
    g_main_context_iteration(NULL, TRUE);
  }
  return 0;
}

static gboolean webview_dispatch_wrapper(gpointer userdata) {
  struct webview *w = (struct webview *)userdata;
  for (;;) {
    struct webview_dispatch_arg *arg =
        (struct webview_dispatch_arg *)g_async_queue_try_pop(w->priv.queue);
    if (arg == NULL) {
      break;
    }
    (arg->fn)(w, arg->arg);
    g_free(arg);
  }
  return FALSE;
}

WEBVIEW_API void webview_dispatch(struct webview *w, webview_dispatch_fn fn,
                                  void *arg) {
  struct webview_dispatch_arg *context =
      (struct webview_dispatch_arg *)g_new(struct webview_dispatch_arg, 1);
  context->w = w;
  context->arg = arg;
  context->fn = fn;
  g_async_queue_lock(w->priv.queue);
  g_async_queue_push_unlocked(w->priv.queue, context);
  if (g_async_queue_length_unlocked(w->priv.queue) == 1) {
    gdk_threads_add_idle(webview_dispatch_wrapper, w);
  }
  g_async_queue_unlock(w->priv.queue);
}

WEBVIEW_API void webview_terminate(struct webview *w) {
  w->priv.should_exit = 1;
}

WEBVIEW_API void webview_exit(struct webview *w) { (void)w; }
WEBVIEW_API void webview_print_log(const char *s) {
  fprintf(stderr, "%s\n", s);
}