| /* |
| * Copyright (C) 2008-2017 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. |
| */ |
| |
| #pragma once |
| |
| #include <wtf/Forward.h> |
| #include <wtf/RetainPtr.h> |
| #include "Timer.h" |
| |
| #if PLATFORM(IOS_FAMILY) |
| OBJC_CLASS WebNetworkStateObserver; |
| #endif |
| |
| #if PLATFORM(MAC) |
| typedef const struct __SCDynamicStore * SCDynamicStoreRef; |
| #endif |
| |
| #if PLATFORM(WIN) |
| #include <windows.h> |
| #endif |
| |
| namespace WebCore { |
| |
| class NetworkStateNotifier { |
| WTF_MAKE_NONCOPYABLE(NetworkStateNotifier); |
| |
| public: |
| WEBCORE_EXPORT static NetworkStateNotifier& singleton(); |
| |
| WEBCORE_EXPORT bool onLine(); |
| WEBCORE_EXPORT void addListener(WTF::Function<void(bool isOnLine)>&&); |
| |
| private: |
| friend NeverDestroyed<NetworkStateNotifier>; |
| |
| NetworkStateNotifier(); |
| |
| void updateStateWithoutNotifying(); |
| void updateState(); |
| void updateStateSoon(); |
| void startObserving(); |
| |
| #if PLATFORM(WIN) |
| void registerForAddressChange(); |
| static void CALLBACK addressChangeCallback(void*, BOOLEAN timedOut); |
| #endif |
| |
| #if USE(GLIB) |
| static void networkChangedCallback(NetworkStateNotifier*); |
| #endif |
| |
| Optional<bool> m_isOnLine; |
| Vector<WTF::Function<void(bool)>> m_listeners; |
| Timer m_updateStateTimer; |
| |
| #if PLATFORM(IOS_FAMILY) |
| RetainPtr<WebNetworkStateObserver> m_observer; |
| #endif |
| |
| #if PLATFORM(MAC) |
| RetainPtr<SCDynamicStoreRef> m_store; |
| #endif |
| |
| #if PLATFORM(WIN) |
| HANDLE m_waitHandle; |
| OVERLAPPED m_overlapped; |
| #endif |
| }; |
| |
| } // namespace WebCore |