15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2012 Google Inc. All Rights Reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef IdTargetObserverRegistry_h 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define IdTargetObserverRegistry_h 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 29f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles)#include "platform/heap/Handle.h" 30e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/Forward.h" 31e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/HashMap.h" 32e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/HashSet.h" 3383750176c3ee2cea66c8a9751271026a5901be3aBen Murdoch#include "wtf/text/StringHash.h" 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 35c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class IdTargetObserver; 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 39f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles)class IdTargetObserverRegistry FINAL : public NoBaseWillBeGarbageCollectedFinalized<IdTargetObserverRegistry> { 40f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) WTF_MAKE_NONCOPYABLE(IdTargetObserverRegistry); 41f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED; 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) friend class IdTargetObserver; 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 44f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) static PassOwnPtrWillBeRawPtr<IdTargetObserverRegistry> create(); 45f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) void trace(Visitor*); 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void notifyObservers(const AtomicString& id); 4709380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) bool hasObservers(const AtomicString& id) const; 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 50f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) IdTargetObserverRegistry() : m_notifyingObserversInSet(nullptr) { } 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void addObserver(const AtomicString& id, IdTargetObserver*); 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void removeObserver(const AtomicString& id, IdTargetObserver*); 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void notifyObserversInternal(const AtomicString& id); 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 55f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) typedef WillBeHeapHashSet<RawPtrWillBeMember<IdTargetObserver> > ObserverSet; 56f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) typedef WillBeHeapHashMap<StringImpl*, OwnPtrWillBeMember<ObserverSet> > IdToObserverSetMap; 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) IdToObserverSetMap m_registry; 58f523d2789ac2f83c4eca0ee4d5161bfdb5f2d052Torne (Richard Coles) RawPtrWillBeMember<ObserverSet> m_notifyingObserversInSet; 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline void IdTargetObserverRegistry::notifyObservers(const AtomicString& id) 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!m_notifyingObserversInSet); 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (id.isEmpty() || m_registry.isEmpty()) 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return; 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) IdTargetObserverRegistry::notifyObserversInternal(id); 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 69c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // IdTargetObserverRegistry_h 72