text: /*
   * 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.
   */
  
  #ifndef PageLifecycleNotifier_h
  #define PageLifecycleNotifier_h
  
  #include "core/page/PageLifecycleObserver.h"
  #include "platform/LifecycleNotifier.h"
  #include "wtf/PassOwnPtr.h"
  #include "wtf/TemporaryChange.h"
  
  namespace blink {
  
  class Page;
  class LocalFrame;
  
  class PageLifecycleNotifier final : public LifecycleNotifier<Page> {
  public:
      static PassOwnPtr<PageLifecycleNotifier> create(Page*);
  
      void notifyPageVisibilityChanged();
      void notifyDidCommitLoad(LocalFrame*);
  
      virtual void addObserver(Observer*) override;
      virtual void removeObserver(Observer*) override;
  
  private:
      explicit PageLifecycleNotifier(Page*);
  
      typedef HashSet<PageLifecycleObserver*> PageObserverSet;
      PageObserverSet m_pageObservers;
  };
  
  inline PassOwnPtr<PageLifecycleNotifier> PageLifecycleNotifier::create(Page* context)
  {
      return adoptPtr(new PageLifecycleNotifier(context));
  }
  
  inline void PageLifecycleNotifier::notifyPageVisibilityChanged()
  {
      TemporaryChange<IterationType> scope(this->m_iterating, IteratingOverPageObservers);
      for (PageObserverSet::iterator it = m_pageObservers.begin(); it != m_pageObservers.end(); ++it)
          (*it)->pageVisibilityChanged();
  }
  
  inline void PageLifecycleNotifier::notifyDidCommitLoad(LocalFrame* frame)
  {
      TemporaryChange<IterationType> scope(this->m_iterating, IteratingOverPageObservers);
      for (PageObserverSet::iterator it = m_pageObservers.begin(); it != m_pageObservers.end(); ++it)
          (*it)->didCommitLoad(frame);
  }
  
  } // namespace blink
  
  #endif // PageLifecycleNotifier_h
  