15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2011 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 are 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions of source code must retain the above copyright 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions in binary form must reproduce the above 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * copyright notice, this list of conditions and the following disclaimer 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * in the documentation and/or other materials provided with the 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * distribution. 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Neither the name of Google Inc. nor the names of its 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * contributors may be used to endorse or promote products derived from 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * this software without specific prior written permission. 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "config.h" 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/dom/MutationObserverInterestGroup.h" 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/dom/MutationRecord.h" 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WebCore { 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 39f79f16f17ddc4f842d7b7a38603e280e94be826aTorne (Richard Coles)PassOwnPtr<MutationObserverInterestGroup> MutationObserverInterestGroup::createIfNeeded(Node& target, MutationObserver::MutationType type, MutationRecordDeliveryOptions oldValueFlag, const QualifiedName* attributeName) 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT((type == MutationObserver::Attributes && attributeName) || !attributeName); 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) HashMap<MutationObserver*, MutationRecordDeliveryOptions> observers; 43f79f16f17ddc4f842d7b7a38603e280e94be826aTorne (Richard Coles) target.getRegisteredMutationObserversOfType(observers, type, attributeName); 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (observers.isEmpty()) 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return nullptr; 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return adoptPtr(new MutationObserverInterestGroup(observers, oldValueFlag)); 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)MutationObserverInterestGroup::MutationObserverInterestGroup(HashMap<MutationObserver*, MutationRecordDeliveryOptions>& observers, MutationRecordDeliveryOptions oldValueFlag) 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_oldValueFlag(oldValueFlag) 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(!observers.isEmpty()); 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_observers.swap(observers); 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)bool MutationObserverInterestGroup::isOldValueRequested() 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) for (HashMap<MutationObserver*, MutationRecordDeliveryOptions>::iterator iter = m_observers.begin(); iter != m_observers.end(); ++iter) { 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (hasOldValue(iter->value)) 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return true; 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)void MutationObserverInterestGroup::enqueueMutationRecord(PassRefPtr<MutationRecord> prpMutation) 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr<MutationRecord> mutation = prpMutation; 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr<MutationRecord> mutationWithNullOldValue; 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) for (HashMap<MutationObserver*, MutationRecordDeliveryOptions>::iterator iter = m_observers.begin(); iter != m_observers.end(); ++iter) { 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) MutationObserver* observer = iter->key; 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (hasOldValue(iter->value)) { 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) observer->enqueueMutationRecord(mutation); 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) continue; 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!mutationWithNullOldValue) { 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (mutation->oldValue().isNull()) 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) mutationWithNullOldValue = mutation; 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) else 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) mutationWithNullOldValue = MutationRecord::createWithNullOldValue(mutation).get(); 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) observer->enqueueMutationRecord(mutationWithNullOldValue); 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WebCore 87