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      1 /*
      2  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef NetworkStateNotifier_h
     27 #define NetworkStateNotifier_h
     28 
     29 #include <wtf/FastAllocBase.h>
     30 #include <wtf/Noncopyable.h>
     31 #if PLATFORM(ANDROID)
     32 // TODO: Upstream to webkit.org
     33 #include "Connection.h"
     34 #endif
     35 
     36 #if PLATFORM(MAC)
     37 
     38 #include <wtf/RetainPtr.h>
     39 #include "Timer.h"
     40 
     41 typedef const struct __CFArray * CFArrayRef;
     42 typedef const struct __SCDynamicStore * SCDynamicStoreRef;
     43 
     44 #elif PLATFORM(WIN)
     45 
     46 #include <windows.h>
     47 
     48 #elif PLATFORM(QT)
     49 
     50 #include <QtCore/qglobal.h>
     51 
     52 #ifdef QT_NO_BEARERMANAGEMENT
     53 #undef ENABLE_QT_BEARER
     54 #define ENABLE_QT_BEARER 0
     55 #endif
     56 
     57 #endif
     58 
     59 namespace WebCore {
     60 
     61 #if (PLATFORM(QT) && ENABLE(QT_BEARER))
     62 class NetworkStateNotifierPrivate;
     63 #endif
     64 
     65 class NetworkStateNotifier {
     66     WTF_MAKE_NONCOPYABLE(NetworkStateNotifier); WTF_MAKE_FAST_ALLOCATED;
     67 public:
     68     NetworkStateNotifier();
     69     void setNetworkStateChangedFunction(void (*)());
     70 
     71     bool onLine() const { return m_isOnLine; }
     72 
     73 #if (PLATFORM(QT) && ENABLE(QT_BEARER))
     74     void setNetworkAccessAllowed(bool);
     75 #elif PLATFORM(ANDROID) || PLATFORM(CHROMIUM)
     76     void setOnLine(bool);
     77 #endif
     78 
     79 #if PLATFORM(ANDROID)
     80     void networkStateChange(bool online) { setOnLine(online); }
     81     // TODO: Upstream to webkit.org
     82     void networkTypeChange(Connection::ConnectionType type);
     83     // TODO: Upstream to webkit.org
     84     Connection::ConnectionType type() const { return m_type; }
     85 #endif
     86 
     87 private:
     88     bool m_isOnLine;
     89 #if PLATFORM(ANDROID)
     90     // TODO: Upstream to webkit.org
     91     Connection::ConnectionType m_type;
     92 #endif
     93     void (*m_networkStateChangedFunction)();
     94 
     95     void updateState();
     96 
     97 #if PLATFORM(MAC)
     98     void networkStateChangeTimerFired(Timer<NetworkStateNotifier>*);
     99 
    100     static void dynamicStoreCallback(SCDynamicStoreRef, CFArrayRef changedKeys, void *info);
    101 
    102     RetainPtr<SCDynamicStoreRef> m_store;
    103     Timer<NetworkStateNotifier> m_networkStateChangeTimer;
    104 
    105 #elif PLATFORM(WIN)
    106     static void CALLBACK addrChangeCallback(void*, BOOLEAN timedOut);
    107     static void callAddressChanged(void*);
    108     void addressChanged();
    109 
    110     void registerForAddressChange();
    111     HANDLE m_waitHandle;
    112     OVERLAPPED m_overlapped;
    113 
    114 #elif PLATFORM(QT) && ENABLE(QT_BEARER)
    115     friend class NetworkStateNotifierPrivate;
    116     NetworkStateNotifierPrivate* p;
    117 #endif
    118 };
    119 
    120 #if !PLATFORM(MAC) && !PLATFORM(WIN) && !(PLATFORM(QT) && ENABLE(QT_BEARER))
    121 
    122 inline NetworkStateNotifier::NetworkStateNotifier()
    123     : m_isOnLine(true)
    124 #if PLATFORM(ANDROID)
    125     // TODO: Upstream to webkit.org
    126     , m_type(Connection::UNKNOWN)
    127 #endif
    128     , m_networkStateChangedFunction(0)
    129 {
    130 }
    131 
    132 inline void NetworkStateNotifier::updateState() { }
    133 
    134 #endif
    135 
    136 NetworkStateNotifier& networkStateNotifier();
    137 
    138 };
    139 
    140 #endif // NetworkStateNotifier_h
    141