Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 Google Inc. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are |
| 6 | * met: |
| 7 | * |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above |
| 11 | * copyright notice, this list of conditions and the following disclaimer |
| 12 | * in the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * * Neither the name of Google Inc. nor the names of its |
| 15 | * contributors may be used to endorse or promote products derived from |
| 16 | * this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef MutationObserverRegistration_h |
| 32 | #define MutationObserverRegistration_h |
| 33 | |
| 34 | #include "core/dom/MutationObserver.h" |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 35 | #include "wtf/HashSet.h" |
| 36 | #include "wtf/text/AtomicString.h" |
| 37 | #include "wtf/text/AtomicStringHash.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 38 | |
| 39 | namespace WebCore { |
| 40 | |
| 41 | class QualifiedName; |
| 42 | |
| 43 | class MutationObserverRegistration { |
| 44 | public: |
| 45 | static PassOwnPtr<MutationObserverRegistration> create(PassRefPtr<MutationObserver>, Node*, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter); |
| 46 | ~MutationObserverRegistration(); |
| 47 | |
| 48 | void resetObservation(MutationObserverOptions, const HashSet<AtomicString>& attributeFilter); |
| 49 | void observedSubtreeNodeWillDetach(Node*); |
| 50 | void clearTransientRegistrations(); |
| 51 | bool hasTransientRegistrations() const { return m_transientRegistrationNodes && !m_transientRegistrationNodes->isEmpty(); } |
| 52 | void unregister(); |
| 53 | |
| 54 | bool shouldReceiveMutationFrom(Node*, MutationObserver::MutationType, const QualifiedName* attributeName) const; |
| 55 | bool isSubtree() const { return m_options & MutationObserver::Subtree; } |
| 56 | |
| 57 | MutationObserver* observer() const { return m_observer.get(); } |
| 58 | MutationRecordDeliveryOptions deliveryOptions() const { return m_options & (MutationObserver::AttributeOldValue | MutationObserver::CharacterDataOldValue); } |
| 59 | MutationObserverOptions mutationTypes() const { return m_options & MutationObserver::AllMutationTypes; } |
| 60 | |
| 61 | void addRegistrationNodesToSet(HashSet<Node*>&) const; |
| 62 | |
| 63 | private: |
| 64 | MutationObserverRegistration(PassRefPtr<MutationObserver>, Node*, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter); |
| 65 | |
| 66 | RefPtr<MutationObserver> m_observer; |
| 67 | Node* m_registrationNode; |
| 68 | RefPtr<Node> m_registrationNodeKeepAlive; |
| 69 | typedef HashSet<RefPtr<Node> > NodeHashSet; |
| 70 | OwnPtr<NodeHashSet> m_transientRegistrationNodes; |
| 71 | |
| 72 | MutationObserverOptions m_options; |
| 73 | HashSet<AtomicString> m_attributeFilter; |
| 74 | }; |
| 75 | |
| 76 | } // namespace WebCore |
| 77 | |
| 78 | #endif // MutationObserverRegistration_h |