pageHidden method

void pageHidden(
  1. bool hidden
)

The browser hid or showed the tab: hidden for hiddenGrace, the session closes, and showing it opens one again.

Implementation

void pageHidden(bool hidden) {
  if (hidden == _hidden) return;
  _hidden = hidden;
  _closeTimer?.cancel();
  _closeTimer = hidden ? Timer(hiddenGrace, _closeIdleSession) : null;
  if (hidden) return;
  // A sleeping laptop or a changed Wi-Fi leaves a socket that looks open and carries nothing.
  if (_closedWhileHidden) {
    _closedWhileHidden = false;
    _client.reconnect();
    return;
  }
  _ensureSession();
}