Title: [164757] trunk/Source
Revision
164757
Author
aes...@apple.com
Date
2014-02-26 16:19:19 -0800 (Wed, 26 Feb 2014)

Log Message

[iOS] Support network state notification using CPNetworkObserver
https://bugs.webkit.org/show_bug.cgi?id=129358

Reviewed by Dan Bernstein.

Source/WebCore:

Add iOS support for navigator.onLine and online/offline events. Since
it can be expensive to query CPNetworkObserver, wait to do so until
someone calls NetworkStateObserver::onLine() or
NetworkStateObserver::addNetworkStateChangeListener(). For clients that
don't wish to observe network reachability at all, add a global opt-out.
These clients will only pay the cost of CPNetworkObserver if they load
a page that explicitly accesses navigator.onLine.

No new tests. Covered by existing tests.

* WebCore.exp.in: Stopped exporting NetworkStateNotifier::setIsOnLine()
and started exporting Settings::gShouldOptOutOfNetworkStateObservation.
* WebCore.xcodeproj/project.pbxproj: Renamed NetworkStateNotifierIOS.cpp
to NetworkStateNotifierIOS.mm.
* page/Settings.cpp: Defaulted gShouldOptOutOfNetworkStateObservation
to false.
* page/Settings.h:
(WebCore::Settings::setShouldOptOutOfNetworkStateObservation):
(WebCore::Settings::shouldOptOutOfNetworkStateObservation):
* platform/network/NetworkStateNotifier.cpp:
(WebCore::NetworkStateNotifier::addNetworkStateChangeListener): Ignored
the listener if Settings::shouldOptOutOfNetworkStateObservation().
Called registerObserverIfNecessary() and added the listener otherwise.
(WebCore::NetworkStateNotifier::notifyNetworkStateChange): Const qualified.
* platform/network/NetworkStateNotifier.h
(NetworkStateNotifier::onLine):
* platform/network/ios/NetworkStateNotifierIOS.cpp: Removed.
* platform/network/ios/NetworkStateNotifierIOS.mm: Added.
(-[NetworkStateObserver initWithNotifier:WebCore::]): Registered self
as a network reachable observer on CPNetworkObserver.
(-[NetworkStateObserver dealloc]): Removed self as a network reachable
observer.
(-[NetworkStateObserver networkStateChanged:]): Called setOnLine() on
the web thread, passing the reachability value from the notification.
(WebCore::NetworkStateNotifier::NetworkStateNotifier):
(WebCore::NetworkStateNotifier::~NetworkStateNotifier): Cleared
m_observer's pointer back to us.
(WebCore::NetworkStateNotifier::registerObserverIfNecessary): Initialized
m_observer if necessary.
(WebCore::NetworkStateNotifier::onLine): Called
registerObserverIfNecessary() and set an initial value for m_isOnLine
if m_isOnLineInitialized is false. Returned m_isOnLine.
(WebCore::setOnLine): Set m_isOnLine and called
notifyNetworkStateChange() if needed. Unconditionally set
m_isOnLineInitialized to true.

Source/WebKit/mac:

* WebView/WebView.mm:
(-[WebView _setNetworkStateIsOnline:]): Retained an empty
implementation for binary compatibility for UIKit.
(+[WebView _doNotStartObservingNetworkReachability]): Called
Settings::setShouldOptOutOfNetworkStateObservation(true).
* WebView/WebViewPrivate.h: Removed declaration of
_setNetworkStateIsOnline: and declared
_doNotStartObservingNetworkReachability.

Modified Paths

Added Paths

Removed Paths

Diff

Modified: trunk/Source/WebCore/ChangeLog (164756 => 164757)


--- trunk/Source/WebCore/ChangeLog	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/ChangeLog	2014-02-27 00:19:19 UTC (rev 164757)
@@ -1,3 +1,56 @@
+2014-02-26  Andy Estes  <aes...@apple.com>
+
+        [iOS] Support network state notification using CPNetworkObserver
+        https://bugs.webkit.org/show_bug.cgi?id=129358
+
+        Reviewed by Dan Bernstein.
+
+        Add iOS support for navigator.onLine and online/offline events. Since
+        it can be expensive to query CPNetworkObserver, wait to do so until
+        someone calls NetworkStateObserver::onLine() or
+        NetworkStateObserver::addNetworkStateChangeListener(). For clients that
+        don't wish to observe network reachability at all, add a global opt-out.
+        These clients will only pay the cost of CPNetworkObserver if they load
+        a page that explicitly accesses navigator.onLine.
+
+        No new tests. Covered by existing tests.
+
+        * WebCore.exp.in: Stopped exporting NetworkStateNotifier::setIsOnLine()
+        and started exporting Settings::gShouldOptOutOfNetworkStateObservation.
+        * WebCore.xcodeproj/project.pbxproj: Renamed NetworkStateNotifierIOS.cpp
+        to NetworkStateNotifierIOS.mm.
+        * page/Settings.cpp: Defaulted gShouldOptOutOfNetworkStateObservation
+        to false.
+        * page/Settings.h:
+        (WebCore::Settings::setShouldOptOutOfNetworkStateObservation):
+        (WebCore::Settings::shouldOptOutOfNetworkStateObservation):
+        * platform/network/NetworkStateNotifier.cpp:
+        (WebCore::NetworkStateNotifier::addNetworkStateChangeListener): Ignored
+        the listener if Settings::shouldOptOutOfNetworkStateObservation().
+        Called registerObserverIfNecessary() and added the listener otherwise.
+        (WebCore::NetworkStateNotifier::notifyNetworkStateChange): Const qualified.
+        * platform/network/NetworkStateNotifier.h
+        (NetworkStateNotifier::onLine):
+        * platform/network/ios/NetworkStateNotifierIOS.cpp: Removed.
+        * platform/network/ios/NetworkStateNotifierIOS.mm: Added.
+        (-[NetworkStateObserver initWithNotifier:WebCore::]): Registered self
+        as a network reachable observer on CPNetworkObserver.
+        (-[NetworkStateObserver dealloc]): Removed self as a network reachable
+        observer.
+        (-[NetworkStateObserver networkStateChanged:]): Called setOnLine() on
+        the web thread, passing the reachability value from the notification.
+        (WebCore::NetworkStateNotifier::NetworkStateNotifier):
+        (WebCore::NetworkStateNotifier::~NetworkStateNotifier): Cleared
+        m_observer's pointer back to us.
+        (WebCore::NetworkStateNotifier::registerObserverIfNecessary): Initialized
+        m_observer if necessary.
+        (WebCore::NetworkStateNotifier::onLine): Called
+        registerObserverIfNecessary() and set an initial value for m_isOnLine
+        if m_isOnLineInitialized is false. Returned m_isOnLine.
+        (WebCore::setOnLine): Set m_isOnLine and called
+        notifyNetworkStateChange() if needed. Unconditionally set
+        m_isOnLineInitialized to true.
+
 2014-02-26  Brian Burg  <bb...@apple.com>
 
         Unreviewed build fix for !ENABLE(CONTEXT_MENUS).

Modified: trunk/Source/WebCore/WebCore.exp.in (164756 => 164757)


--- trunk/Source/WebCore/WebCore.exp.in	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/WebCore.exp.in	2014-02-27 00:19:19 UTC (rev 164757)
@@ -2449,7 +2449,6 @@
 __ZN7WebCore19ResourceRequestBase22setDefaultAllowCookiesEb
 __ZN7WebCore19applicationIsWebAppEv
 __ZN7WebCore19asciiLineBreakTableE
-__ZN7WebCore20NetworkStateNotifier11setIsOnLineEb
 __ZN7WebCore20PlatformEventFactory27createPlatformKeyboardEventEP8WebEvent
 __ZN7WebCore20ResourceHandleClient22willCacheResponseAsyncEPNS_14ResourceHandleEPK20_CFCachedURLResponse
 __ZN7WebCore20applicationIsOkCupidEv
@@ -2555,6 +2554,7 @@
 __ZN7WebCore8Settings23setNetworkInterfaceNameERKN3WTF6StringE
 __ZN7WebCore8Settings31setAudioSessionCategoryOverrideEj
 __ZN7WebCore8Settings34setNetworkDataUsageTrackingEnabledEb
+__ZN7WebCore8Settings38gShouldOptOutOfNetworkStateObservationE
 __ZN7WebCore9FontCache17getCachedFontDataERKNS_15FontDescriptionERKN3WTF12AtomicStringEbNS0_12ShouldRetainE
 __ZN7WebCore9FontCache25getLastResortFallbackFontERKNS_15FontDescriptionENS0_12ShouldRetainE
 __ZN7WebCore9FrameView20setWasScrolledByUserEb

Modified: trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj (164756 => 164757)


--- trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj	2014-02-27 00:19:19 UTC (rev 164757)
@@ -1484,7 +1484,7 @@
 		44311CD812E4E24B000A8D19 /* DOMDocumentPrivate.h in Copy Generated Headers */ = {isa = PBXBuildFile; fileRef = 44311CD512E4E22D000A8D19 /* DOMDocumentPrivate.h */; };
 		44311CD912E4E257000A8D19 /* DOMDocumentFragmentPrivate.h in Copy Generated Headers */ = {isa = PBXBuildFile; fileRef = 44311CD412E4E22D000A8D19 /* DOMDocumentFragmentPrivate.h */; };
 		44311F8212E4E66C000A8D19 /* DOMDocumentFragmentInternal.h in Headers */ = {isa = PBXBuildFile; fileRef = 85E711450AC5D5340053270F /* DOMDocumentFragmentInternal.h */; };
-		443F04270E75C8FB007E5407 /* NetworkStateNotifierIOS.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 443F04260E75C8FB007E5407 /* NetworkStateNotifierIOS.cpp */; };
+		443F04270E75C8FB007E5407 /* NetworkStateNotifierIOS.mm in Sources */ = {isa = PBXBuildFile; fileRef = 443F04260E75C8FB007E5407 /* NetworkStateNotifierIOS.mm */; };
 		444D4E230F708B2E003158E0 /* WebCoreURLResponseIOS.mm in Sources */ = {isa = PBXBuildFile; fileRef = 444D4E210F708B2E003158E0 /* WebCoreURLResponseIOS.mm */; };
 		4476531B133170990006B789 /* SSLKeyGeneratorIOS.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4476531A133170990006B789 /* SSLKeyGeneratorIOS.cpp */; };
 		447958041643B49A001E0A7F /* ParsedContentType.h in Headers */ = {isa = PBXBuildFile; fileRef = 447958031643B47B001E0A7F /* ParsedContentType.h */; settings = {ATTRIBUTES = (Private, ); }; };
@@ -8350,7 +8350,7 @@
 		442AF7A8102CDDEA008FD4D3 /* QuickLook.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = QuickLook.mm; sourceTree = "<group>"; };
 		44311CD412E4E22D000A8D19 /* DOMDocumentFragmentPrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DOMDocumentFragmentPrivate.h; sourceTree = "<group>"; };
 		44311CD512E4E22D000A8D19 /* DOMDocumentPrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DOMDocumentPrivate.h; sourceTree = "<group>"; };
-		443F04260E75C8FB007E5407 /* NetworkStateNotifierIOS.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = NetworkStateNotifierIOS.cpp; sourceTree = "<group>"; };
+		443F04260E75C8FB007E5407 /* NetworkStateNotifierIOS.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = NetworkStateNotifierIOS.mm; sourceTree = "<group>"; };
 		444D4E210F708B2E003158E0 /* WebCoreURLResponseIOS.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WebCoreURLResponseIOS.mm; sourceTree = "<group>"; };
 		4476531A133170990006B789 /* SSLKeyGeneratorIOS.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SSLKeyGeneratorIOS.cpp; path = ios/SSLKeyGeneratorIOS.cpp; sourceTree = "<group>"; };
 		447958021643B47B001E0A7F /* ParsedContentType.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ParsedContentType.cpp; sourceTree = "<group>"; };
@@ -15290,7 +15290,7 @@
 		4497D58C0EBA854F00A10552 /* ios */ = {
 			isa = PBXGroup;
 			children = (
-				443F04260E75C8FB007E5407 /* NetworkStateNotifierIOS.cpp */,
+				443F04260E75C8FB007E5407 /* NetworkStateNotifierIOS.mm */,
 				442AF7A7102CDDEA008FD4D3 /* QuickLook.h */,
 				442AF7A8102CDDEA008FD4D3 /* QuickLook.mm */,
 				7E428CE413E3407F003B661C /* ResourceHandleIOS.mm */,
@@ -28149,7 +28149,7 @@
 				5D874F130D161D3200796C3B /* NetscapePlugInStreamLoader.cpp in Sources */,
 				59C27F05138D28C10079B7E2 /* NetworkResourcesData.cpp in Sources */,
 				1A7FA61B0DDA3BBE0028F8A5 /* NetworkStateNotifier.cpp in Sources */,
-				443F04270E75C8FB007E5407 /* NetworkStateNotifierIOS.cpp in Sources */,
+				443F04270E75C8FB007E5407 /* NetworkStateNotifierIOS.mm in Sources */,
 				1A7FA6490DDA3CBA0028F8A5 /* NetworkStateNotifierMac.cpp in Sources */,
 				E13EF34916850C470034C83F /* NetworkStorageSessionCFNet.cpp in Sources */,
 				BCEF43E00E674110001C1287 /* NinePieceImage.cpp in Sources */,

Modified: trunk/Source/WebCore/page/Settings.cpp (164756 => 164757)


--- trunk/Source/WebCore/page/Settings.cpp	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/page/Settings.cpp	2014-02-27 00:19:19 UTC (rev 164757)
@@ -99,6 +99,7 @@
 #if PLATFORM(IOS)
 bool Settings::gNetworkDataUsageTrackingEnabled = false;
 bool Settings::gAVKitEnabled = false;
+bool Settings::gShouldOptOutOfNetworkStateObservation = false;
 #endif
 
 // NOTEs

Modified: trunk/Source/WebCore/page/Settings.h (164756 => 164757)


--- trunk/Source/WebCore/page/Settings.h	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/page/Settings.h	2014-02-27 00:19:19 UTC (rev 164757)
@@ -271,6 +271,9 @@
 
     static void setAVKitEnabled(bool flag) { gAVKitEnabled = flag; }
     static bool avKitEnabled() { return gAVKitEnabled; }
+
+    static void setShouldOptOutOfNetworkStateObservation(bool flag) { gShouldOptOutOfNetworkStateObservation = flag; }
+    static bool shouldOptOutOfNetworkStateObservation() { return gShouldOptOutOfNetworkStateObservation; }
 #endif
 
 private:
@@ -353,6 +356,7 @@
 #if PLATFORM(IOS)
     static bool gNetworkDataUsageTrackingEnabled;
     static bool gAVKitEnabled;
+    static bool gShouldOptOutOfNetworkStateObservation;
 #endif
 
     static double gHiddenPageDOMTimerAlignmentInterval;

Modified: trunk/Source/WebCore/platform/network/NetworkStateNotifier.cpp (164756 => 164757)


--- trunk/Source/WebCore/platform/network/NetworkStateNotifier.cpp	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/platform/network/NetworkStateNotifier.cpp	2014-02-27 00:19:19 UTC (rev 164757)
@@ -26,6 +26,7 @@
 #include "config.h"
 #include "NetworkStateNotifier.h"
 
+#include "Settings.h"
 #include <mutex>
 #include <wtf/Assertions.h>
 #include <wtf/StdLibExtras.h>
@@ -47,11 +48,16 @@
 void NetworkStateNotifier::addNetworkStateChangeListener(std::function<void (bool)> listener)
 {
     ASSERT(listener);
+#if PLATFORM(IOS)
+    if (Settings::shouldOptOutOfNetworkStateObservation())
+        return;
+    registerObserverIfNecessary();
+#endif
 
     m_listeners.append(std::move(listener));
 }
 
-void NetworkStateNotifier::notifyNetworkStateChange()
+void NetworkStateNotifier::notifyNetworkStateChange() const
 {
     for (const auto& listener : m_listeners)
         listener(m_isOnLine);

Modified: trunk/Source/WebCore/platform/network/NetworkStateNotifier.h (164756 => 164757)


--- trunk/Source/WebCore/platform/network/NetworkStateNotifier.h	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/platform/network/NetworkStateNotifier.h	2014-02-27 00:19:19 UTC (rev 164757)
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2008, 2014 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -48,6 +48,11 @@
 typedef struct _Ecore_Fd_Handler Ecore_Fd_Handler;
 typedef unsigned char Eina_Bool;
 
+#elif PLATFORM(IOS)
+
+#include <wtf/RetainPtr.h>
+OBJC_CLASS WebNetworkStateObserver;
+
 #endif
 
 namespace WebCore {
@@ -56,22 +61,20 @@
     WTF_MAKE_NONCOPYABLE(NetworkStateNotifier); WTF_MAKE_FAST_ALLOCATED;
 public:
     NetworkStateNotifier();
-#if PLATFORM(EFL)
+#if PLATFORM(EFL) || PLATFORM(IOS)
     ~NetworkStateNotifier();
 #endif
     void addNetworkStateChangeListener(std::function<void (bool isOnLine)>);
 
-    bool onLine() const { return m_isOnLine; }
-    
-#if PLATFORM(IOS)
-    void setIsOnLine(bool);
-#endif
+    bool onLine() const;
 
 private:
+#if !PLATFORM(IOS)
     bool m_isOnLine;
+#endif
     Vector<std::function<void (bool)>> m_listeners;
 
-    void notifyNetworkStateChange();
+    void notifyNetworkStateChange() const;
     void updateState();
 
 #if PLATFORM(MAC)
@@ -97,6 +100,14 @@
 
     int m_netlinkSocket;
     Ecore_Fd_Handler* m_fdHandler;
+
+#elif PLATFORM(IOS)
+    void registerObserverIfNecessary() const;
+    friend void setOnLine(const NetworkStateNotifier*, bool);
+
+    mutable bool m_isOnLine;
+    mutable bool m_isOnLineInitialized;
+    mutable RetainPtr<WebNetworkStateObserver> m_observer;
 #endif
 };
 
@@ -111,8 +122,15 @@
 
 #endif
 
+#if !PLATFORM(IOS)
+inline bool NetworkStateNotifier::onLine() const
+{
+    return m_isOnLine;
+}
+#endif
+
 NetworkStateNotifier& networkStateNotifier();
 
-};
+} // namespace WebCore
 
 #endif // NetworkStateNotifier_h

Deleted: trunk/Source/WebCore/platform/network/ios/NetworkStateNotifierIOS.cpp (164756 => 164757)


--- trunk/Source/WebCore/platform/network/ios/NetworkStateNotifierIOS.cpp	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebCore/platform/network/ios/NetworkStateNotifierIOS.cpp	2014-02-27 00:19:19 UTC (rev 164757)
@@ -1,44 +0,0 @@
-/*
- * 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"
-
-namespace WebCore {
-
-NetworkStateNotifier::NetworkStateNotifier()
-    : m_isOnLine(false)
-{
-}
-
-void NetworkStateNotifier::setIsOnLine(bool isOnLine)
-{
-    if (m_isOnLine == isOnLine)
-        return;
-    m_isOnLine = isOnLine;
-    notifyNetworkStateChange();
-}
-
-}

Added: trunk/Source/WebCore/platform/network/ios/NetworkStateNotifierIOS.mm (0 => 164757)


--- trunk/Source/WebCore/platform/network/ios/NetworkStateNotifierIOS.mm	                        (rev 0)
+++ trunk/Source/WebCore/platform/network/ios/NetworkStateNotifierIOS.mm	2014-02-27 00:19:19 UTC (rev 164757)
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2008, 2014 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. 
+ */
+
+#import "config.h"
+#import "NetworkStateNotifier.h"
+
+#import "SoftLinking.h"
+#import "WebCoreThreadRun.h"
+
+#if defined(__has_include) && __has_include(<AppSupport/CPNetworkObserver.h>)
+#import <AppSupport/CPNetworkObserver.h>
+#else
+extern NSString * const CPNetworkObserverReachable;
+@interface CPNetworkObserver : NSObject
++ (CPNetworkObserver *)sharedNetworkObserver;
+- (void)addNetworkReachableObserver:(id)observer selector:(SEL)selector;
+- (void)removeNetworkReachableObserver:(id)observer;
+- (BOOL)isNetworkReachable;
+@end
+#endif
+
+SOFT_LINK_PRIVATE_FRAMEWORK(AppSupport);
+SOFT_LINK_CLASS(AppSupport, CPNetworkObserver);
+SOFT_LINK_POINTER(AppSupport, CPNetworkObserverReachable, NSString *);
+
+@interface WebNetworkStateObserver : NSObject
+@property (nonatomic) const WebCore::NetworkStateNotifier* notifier;
+- (id)initWithNotifier:(const WebCore::NetworkStateNotifier*)notifier;
+- (void)networkStateChanged:(NSNotification *)notification;
+@end
+
+@implementation WebNetworkStateObserver
+
+- (id)initWithNotifier:(const WebCore::NetworkStateNotifier*)notifier
+{
+    ASSERT_ARG(notifier, notifier);
+    if (!(self = [super init]))
+        return nil;
+    _notifier = notifier;
+    [[getCPNetworkObserverClass() sharedNetworkObserver] addNetworkReachableObserver:self selector:@selector(networkStateChanged:)];
+    return self;
+}
+
+- (void)dealloc
+{
+    [[getCPNetworkObserverClass() sharedNetworkObserver] removeNetworkReachableObserver:self];
+    [super dealloc];
+}
+
+- (void)networkStateChanged:(NSNotification *)notification
+{
+    ASSERT_ARG(notification, notification);
+    WebThreadRun(^{
+        setOnLine(_notifier, [[[notification userInfo] objectForKey:getCPNetworkObserverReachable()] boolValue]);
+    });
+}
+
+@end
+
+namespace WebCore {
+
+NetworkStateNotifier::NetworkStateNotifier()
+    : m_isOnLine(false)
+    , m_isOnLineInitialized(false)
+{
+}
+    
+NetworkStateNotifier::~NetworkStateNotifier()
+{
+    [m_observer setNotifier:nullptr];
+}
+
+void NetworkStateNotifier::registerObserverIfNecessary() const
+{
+    if (!m_observer)
+        m_observer = adoptNS([[WebNetworkStateObserver alloc] initWithNotifier:this]);
+}
+
+bool NetworkStateNotifier::onLine() const
+{
+    registerObserverIfNecessary();
+    if (!m_isOnLineInitialized) {
+        m_isOnLine = [[getCPNetworkObserverClass() sharedNetworkObserver] isNetworkReachable];
+        m_isOnLineInitialized = true;
+    }
+    return m_isOnLine;
+}
+
+void setOnLine(const NetworkStateNotifier* notifier, bool onLine)
+{
+    ASSERT_ARG(notifier, notifier);
+    notifier->m_isOnLineInitialized = true;
+    if (_onLine_ == notifier->m_isOnLine)
+        return;
+    notifier->m_isOnLine = onLine;
+    notifier->notifyNetworkStateChange();
+}
+
+} // namespace WebCore

Modified: trunk/Source/WebKit/mac/ChangeLog (164756 => 164757)


--- trunk/Source/WebKit/mac/ChangeLog	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebKit/mac/ChangeLog	2014-02-27 00:19:19 UTC (rev 164757)
@@ -1,3 +1,19 @@
+2014-02-26  Andy Estes  <aes...@apple.com>
+
+        [iOS] Support network state notification using CPNetworkObserver
+        https://bugs.webkit.org/show_bug.cgi?id=129358
+
+        Reviewed by Dan Bernstein.
+
+        * WebView/WebView.mm:
+        (-[WebView _setNetworkStateIsOnline:]): Retained an empty
+        implementation for binary compatibility for UIKit.
+        (+[WebView _doNotStartObservingNetworkReachability]): Called
+        Settings::setShouldOptOutOfNetworkStateObservation(true).
+        * WebView/WebViewPrivate.h: Removed declaration of
+        _setNetworkStateIsOnline: and declared
+        _doNotStartObservingNetworkReachability.
+
 2014-02-25  Anders Carlsson  <ander...@apple.com>
 
         Get rid of VisitedLinkStrategy

Modified: trunk/Source/WebKit/mac/WebView/WebView.mm (164756 => 164757)


--- trunk/Source/WebKit/mac/WebView/WebView.mm	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebKit/mac/WebView/WebView.mm	2014-02-27 00:19:19 UTC (rev 164757)
@@ -3607,11 +3607,9 @@
     return _private->allowsMessaging;
 }
 
+// FIXME: Remove once this is no longer necessary for UIKit binary compatibility.
 - (void)_setNetworkStateIsOnline:(BOOL)isOnLine
 {
-    WebThreadRun(^{
-        networkStateNotifier().setIsOnLine(isOnLine);
-    });
 }
 
 - (void)_setFixedLayoutSize:(CGSize)size
@@ -3700,6 +3698,11 @@
 
     frame->overflowScrollPositionChangedForNode(roundedIntPoint(offset), node, userScroll);
 }
+
++ (void)_doNotStartObservingNetworkReachability
+{
+    Settings::setShouldOptOutOfNetworkStateObservation(true);
+}
 #endif // PLATFORM(IOS)
 
 #if ENABLE(TOUCH_EVENTS)

Modified: trunk/Source/WebKit/mac/WebView/WebViewPrivate.h (164756 => 164757)


--- trunk/Source/WebKit/mac/WebView/WebViewPrivate.h	2014-02-26 23:48:33 UTC (rev 164756)
+++ trunk/Source/WebKit/mac/WebView/WebViewPrivate.h	2014-02-27 00:19:19 UTC (rev 164757)
@@ -572,8 +572,6 @@
 - (void)_setAllowsMessaging:(BOOL)aFlag;
 - (BOOL)_allowsMessaging;
 
-- (void)_setNetworkStateIsOnline:(BOOL)isOnLine;
-
 - (void)_setCustomFixedPositionLayoutRectInWebThread:(CGRect)rect synchronize:(BOOL)synchronize;
 - (void)_setCustomFixedPositionLayoutRect:(CGRect)rect;
 
@@ -583,6 +581,13 @@
 - (void)_overflowScrollPositionChangedTo:(CGPoint)offset forNode:(DOMNode *)node isUserScroll:(BOOL)userScroll;
 
 - (NSArray *)_touchEventRegions;
+
+/*!
+    @method _doNotStartObservingNetworkReachability
+    @abstract Does not start observation of network reachability in any WebView.
+    @discussion To take effect, this method must be called before the first WebView is created.
+ */
++ (void)_doNotStartObservingNetworkReachability;
 #endif
 
 #if !TARGET_OS_IPHONE
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