Extract simpler classes for observing context lifecycle and observe Page lifecycle inNavigatorVibra…

Source/core/page/PageLifecycleNotifier.cpp

 /*
  * Copyright (C) 2013 Google 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. 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+
 #include "config.h"
-#include "modules/geolocation/Coordinates.h"
+#include "core/page/PageLifecycleNotifier.h"
 
 namespace WebCore {
 
-double Coordinates::altitude(bool& isNull) const
+PageLifecycleNotifier::PageLifecycleNotifier(SimpleLifecycleContext* context)
+    : SimpleLifecycleNotifier(context)
 {
-    if (m_canProvideAltitude)
-        return m_altitude;
-
-    isNull = true;
-    return 0;
 }
 
-double Coordinates::altitudeAccuracy(bool& isNull) const
+void PageLifecycleNotifier::addObserver(SimpleLifecycleObserver* observer, SimpleLifecycleObserver::Type type)
 {
-    if (m_canProvideAltitudeAccuracy)
-        return m_altitudeAccuracy;
+    if (type == SimpleLifecycleObserver::PageLifecycleObserverType) {
+        RELEASE_ASSERT(m_iterating != IteratingOverPageObservers);
+        m_pageObservers.add(static_cast<PageLifecycleObserver*>(observer));
+    }
 
-    isNull = true;
-    return 0;
+    SimpleLifecycleNotifier::addObserver(observer, type);
 }
 
-double Coordinates::heading(bool& isNull) const
+void PageLifecycleNotifier::removeObserver(SimpleLifecycleObserver* observer, SimpleLifecycleObserver::Type type)
 {
-    if (m_canProvideHeading)
-        return m_heading;
+    if (type == SimpleLifecycleObserver::PageLifecycleObserverType) {
+        RELEASE_ASSERT(m_iterating != IteratingOverPageObservers);
+        m_pageObservers.remove(static_cast<PageLifecycleObserver*>(observer));
+    }
 
-    isNull = true;
-    return 0;
+    SimpleLifecycleNotifier::removeObserver(observer, type);
 }
 
-double Coordinates::speed(bool& isNull) const
-{
-    if (m_canProvideSpeed)
-        return m_speed;
-
-    isNull = true;
-    return 0;
-}
-    
 } // namespace WebCore