| /* |
| * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| * 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 COMPUTER, 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 COMPUTER, 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 ContextLifecycleNotifier_h |
| #define ContextLifecycleNotifier_h |
| |
| #include "core/dom/ActiveDOMObject.h" |
| #include "platform/LifecycleNotifier.h" |
| #include "wtf/HashSet.h" |
| #include "wtf/PassOwnPtr.h" |
| |
| namespace blink { |
| |
| class ActiveDOMObject; |
| class ExecutionContext; |
| |
| class ContextLifecycleNotifier : public LifecycleNotifier<ExecutionContext> { |
| public: |
| static PassOwnPtr<ContextLifecycleNotifier> create(ExecutionContext*); |
| |
| virtual ~ContextLifecycleNotifier(); |
| |
| typedef HashSet<ActiveDOMObject*> ActiveDOMObjectSet; |
| |
| const ActiveDOMObjectSet& activeDOMObjects() const { return m_activeDOMObjects; } |
| |
| virtual void addObserver(Observer*) override; |
| virtual void removeObserver(Observer*) override; |
| |
| void notifyResumingActiveDOMObjects(); |
| void notifySuspendingActiveDOMObjects(); |
| void notifyStoppingActiveDOMObjects(); |
| |
| bool contains(ActiveDOMObject* object) const { return m_activeDOMObjects.contains(object); } |
| bool hasPendingActivity() const; |
| |
| protected: |
| explicit ContextLifecycleNotifier(ExecutionContext*); |
| |
| private: |
| ActiveDOMObjectSet m_activeDOMObjects; |
| }; |
| |
| inline PassOwnPtr<ContextLifecycleNotifier> ContextLifecycleNotifier::create(ExecutionContext* context) |
| { |
| return adoptPtr(new ContextLifecycleNotifier(context)); |
| } |
| |
| } // namespace blink |
| |
| #endif // ContextLifecycleNotifier_h |