| /* |
| * 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 DocumentLifecycleObserver_h |
| #define DocumentLifecycleObserver_h |
| |
| #include "core/dom/ContextDestructionObserver.h" |
| #include "wtf/Assertions.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/Vector.h" |
| |
| namespace WebCore { |
| |
| class Document; |
| |
| class DocumentLifecycleObserver : public ContextDestructionObserver { |
| public: |
| explicit DocumentLifecycleObserver(Document*); |
| virtual ~DocumentLifecycleObserver() { } |
| virtual void documentWasDetached() { } |
| virtual void documentWasDisposed() { } |
| }; |
| |
| class DocumentLifecycleNotifier { |
| public: |
| static PassOwnPtr<DocumentLifecycleNotifier> create(); |
| |
| void notifyDocumentWasDetached(); |
| void notifyDocumentWasDisposed(); |
| |
| void addObserver(DocumentLifecycleObserver*); |
| |
| private: |
| #if ASSERT_DISABLED |
| DocumentLifecycleNotifier() { } |
| void startIteration() { } |
| void endIteration() { } |
| #else |
| DocumentLifecycleNotifier() : m_iterating(false) { } |
| void startIteration() { m_iterating = true; } |
| void endIteration() { m_iterating = false; } |
| bool m_iterating; |
| #endif |
| |
| Vector<DocumentLifecycleObserver*> m_observers; // Use Vector instead of HashSet for faster iteration |
| }; |
| |
| inline void DocumentLifecycleNotifier::notifyDocumentWasDetached() |
| { |
| startIteration(); |
| for (size_t i = 0; i < m_observers.size(); ++i) |
| m_observers[i]->documentWasDetached(); |
| endIteration(); |
| } |
| |
| inline void DocumentLifecycleNotifier::notifyDocumentWasDisposed() |
| { |
| startIteration(); |
| for (size_t i = 0; i < m_observers.size(); ++i) |
| m_observers[i]->documentWasDisposed(); |
| endIteration(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // DocumentLifecycleObserver_h |