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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/Noncopyable.h>
     30 #if PLATFORM(ANDROID)
     31 // TODO: Upstream to webkit.org
     32 #include "Connection.h"
     33 #endif
     34 
     35 #if PLATFORM(MAC)
     36 
     37 #include <wtf/RetainPtr.h>
     38 #include "Timer.h"
     39 
     40 typedef const struct __CFArray * CFArrayRef;
     41 typedef const struct __SCDynamicStore * SCDynamicStoreRef;
     42 
     43 #elif PLATFORM(CHROMIUM)
     44 
     45 #include "NetworkStateNotifierPrivate.h"
     46 
     47 #elif PLATFORM(WIN)
     48 
     49 #include <windows.h>
     50 
     51 #endif
     52 
     53 namespace WebCore {
     54 
     55 #if (PLATFORM(QT) && ENABLE(QT_BEARER))
     56 class NetworkStateNotifierPrivate;
     57 #endif
     58 
     59 class NetworkStateNotifier : public Noncopyable {
     60 public:
     61     NetworkStateNotifier();
     62     void setNetworkStateChangedFunction(void (*)());
     63 
     64     bool onLine() const { return m_isOnLine; }
     65 
     66 #if (PLATFORM(QT) && ENABLE(QT_BEARER))
     67     void setNetworkAccessAllowed(bool);
     68 #endif
     69 
     70 #if PLATFORM(ANDROID)
     71     // TODO: Upstream to webkit.org
     72     Connection::ConnectionType type() const { return m_type; }
     73 #endif
     74 
     75 private:
     76     bool m_isOnLine;
     77 #if PLATFORM(ANDROID)
     78     // TODO: Upstream to webkit.org
     79     Connection::ConnectionType m_type;
     80 #endif
     81     void (*m_networkStateChangedFunction)();
     82 
     83     void updateState();
     84 
     85 #if PLATFORM(MAC)
     86     void networkStateChangeTimerFired(Timer<NetworkStateNotifier>*);
     87 
     88     static void dynamicStoreCallback(SCDynamicStoreRef, CFArrayRef changedKeys, void *info);
     89 
     90     RetainPtr<SCDynamicStoreRef> m_store;
     91     Timer<NetworkStateNotifier> m_networkStateChangeTimer;
     92 
     93 #elif PLATFORM(WIN)
     94     static void CALLBACK addrChangeCallback(void*, BOOLEAN timedOut);
     95     static void callAddressChanged(void*);
     96     void addressChanged();
     97 
     98     void registerForAddressChange();
     99     HANDLE m_waitHandle;
    100     OVERLAPPED m_overlapped;
    101 
    102 #elif PLATFORM(CHROMIUM)
    103     NetworkStateNotifierPrivate p;
    104 
    105 #elif PLATFORM(ANDROID)
    106 public:
    107     void networkStateChange(bool online);
    108     // TODO: Upstream to webkit.org
    109     void networkTypeChange(Connection::ConnectionType type);
    110 
    111 #elif PLATFORM(QT) && ENABLE(QT_BEARER)
    112     friend class NetworkStateNotifierPrivate;
    113     NetworkStateNotifierPrivate* p;
    114 #endif
    115 };
    116 
    117 #if !PLATFORM(MAC) && !PLATFORM(WIN) && !PLATFORM(CHROMIUM) && !(PLATFORM(QT) && ENABLE(QT_BEARER))
    118 
    119 inline NetworkStateNotifier::NetworkStateNotifier()
    120     : m_isOnLine(true)
    121 #if PLATFORM(ANDROID)
    122     // TODO: Upstream to webkit.org
    123     , m_type(Connection::Unknown)
    124 #endif
    125     , m_networkStateChangedFunction(0)
    126 {
    127 }
    128 
    129 inline void NetworkStateNotifier::updateState() { }
    130 
    131 #endif
    132 
    133 NetworkStateNotifier& networkStateNotifier();
    134 
    135 };
    136 
    137 #endif // NetworkStateNotifier_h
    138