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) 29e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/Forward.h" 30e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/HashMap.h" 31e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/HashSet.h" 32e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/PassOwnPtr.h" 3383750176c3ee2cea66c8a9751271026a5901be3aBen Murdoch#include "wtf/text/StringHash.h" 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WebCore { 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class IdTargetObserver; 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class IdTargetObserverRegistry { 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WTF_MAKE_FAST_ALLOCATED; 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) friend class IdTargetObserver; 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) static PassOwnPtr<IdTargetObserverRegistry> create(); 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void notifyObservers(const AtomicString& id); 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) IdTargetObserverRegistry() : m_notifyingObserversInSet(0) { } 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void addObserver(const AtomicString& id, IdTargetObserver*); 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void removeObserver(const AtomicString& id, IdTargetObserver*); 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void notifyObserversInternal(const AtomicString& id); 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) typedef HashSet<IdTargetObserver*> ObserverSet; 5383750176c3ee2cea66c8a9751271026a5901be3aBen Murdoch typedef HashMap<StringImpl*, OwnPtr<ObserverSet> > IdToObserverSetMap; 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) IdToObserverSetMap m_registry; 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ObserverSet* m_notifyingObserversInSet; 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline void IdTargetObserverRegistry::notifyObservers(const AtomicString& id) 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!m_notifyingObserversInSet); 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (id.isEmpty() || m_registry.isEmpty()) 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return; 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) IdTargetObserverRegistry::notifyObserversInternal(id); 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WebCore 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // IdTargetObserverRegistry_h 69