/* * Copyright (C) 2008 Apple Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include "NetworkStateNotifier.h" #if PLATFORM(IOS) #include "Settings.h" #endif #include <mutex> #include <wtf/Assertions.h> #include <wtf/NeverDestroyed.h> namespace WebCore { NetworkStateNotifier& networkStateNotifier() { static std::once_flag onceFlag; static LazyNeverDestroyed<NetworkStateNotifier> networkStateNotifier; std::call_once(onceFlag, []{ networkStateNotifier.construct(); }); return networkStateNotifier; } void NetworkStateNotifier::addNetworkStateChangeListener(std::function<void (bool)> listener) { ASSERT(listener); #if PLATFORM(IOS) if (Settings::shouldOptOutOfNetworkStateObservation()) return; registerObserverIfNecessary(); #endif m_listeners.append(WTFMove(listener)); } void NetworkStateNotifier::notifyNetworkStateChange() const { for (const auto& listener : m_listeners) listener(m_isOnLine); } } // namespace WebCore