| /* |
| * Copyright (C) 2011 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "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 THE COPYRIGHT |
| * OWNER 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 THIRD_PARTY_BLINK_RENDERER_CORE_DOM_MUTATION_OBSERVER_REGISTRATION_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_MUTATION_OBSERVER_REGISTRATION_H_ |
| |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/dom/mutation_observer.h" |
| #include "third_party/blink/renderer/platform/bindings/script_wrappable.h" |
| #include "third_party/blink/renderer/platform/bindings/trace_wrapper_member.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/wtf/hash_set.h" |
| #include "third_party/blink/renderer/platform/wtf/text/atomic_string.h" |
| #include "third_party/blink/renderer/platform/wtf/text/atomic_string_hash.h" |
| |
| namespace blink { |
| |
| class QualifiedName; |
| |
| class CORE_EXPORT MutationObserverRegistration final |
| : public GarbageCollectedFinalized<MutationObserverRegistration>, |
| public TraceWrapperBase { |
| public: |
| static MutationObserverRegistration* Create( |
| MutationObserver&, |
| Node*, |
| MutationObserverOptions, |
| const HashSet<AtomicString>& attribute_filter); |
| ~MutationObserverRegistration(); |
| |
| void ResetObservation(MutationObserverOptions, |
| const HashSet<AtomicString>& attribute_filter); |
| void ObservedSubtreeNodeWillDetach(Node&); |
| void ClearTransientRegistrations(); |
| bool HasTransientRegistrations() const { |
| return transient_registration_nodes_ && |
| !transient_registration_nodes_->IsEmpty(); |
| } |
| void Unregister(); |
| |
| bool ShouldReceiveMutationFrom(Node&, |
| MutationType, |
| const QualifiedName* attribute_name) const; |
| bool IsSubtree() const { return options_ & MutationObserver::kSubtree; } |
| |
| MutationObserver& Observer() const { return *observer_; } |
| MutationRecordDeliveryOptions DeliveryOptions() const { |
| return options_ & (MutationObserver::kAttributeOldValue | |
| MutationObserver::kCharacterDataOldValue); |
| } |
| MutationType MutationTypes() const { |
| return static_cast<MutationType>(options_ & kMutationTypeAll); |
| } |
| |
| void AddRegistrationNodesToSet(HeapHashSet<Member<Node>>&) const; |
| |
| void Dispose(); |
| |
| void Trace(blink::Visitor*); |
| const char* NameInHeapSnapshot() const override { |
| return "MutationObserverRegistration"; |
| } |
| |
| private: |
| MutationObserverRegistration(MutationObserver&, |
| Node*, |
| MutationObserverOptions, |
| const HashSet<AtomicString>& attribute_filter); |
| |
| TraceWrapperMember<MutationObserver> observer_; |
| WeakMember<Node> registration_node_; |
| Member<Node> registration_node_keep_alive_; |
| typedef HeapHashSet<Member<Node>> NodeHashSet; |
| Member<NodeHashSet> transient_registration_nodes_; |
| |
| MutationObserverOptions options_; |
| HashSet<AtomicString> attribute_filter_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_DOM_MUTATION_OBSERVER_REGISTRATION_H_ |