mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/*
|
|
* 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 SKY_ENGINE_CORE_DOM_MUTATIONOBSERVER_H_
|
|
#define SKY_ENGINE_CORE_DOM_MUTATIONOBSERVER_H_
|
|
|
|
#include "sky/engine/tonic/dart_wrappable.h"
|
|
#include "sky/engine/platform/heap/Handle.h"
|
|
#include "sky/engine/wtf/HashSet.h"
|
|
#include "sky/engine/wtf/PassOwnPtr.h"
|
|
#include "sky/engine/wtf/PassRefPtr.h"
|
|
#include "sky/engine/wtf/RefCounted.h"
|
|
#include "sky/engine/wtf/RefPtr.h"
|
|
#include "sky/engine/wtf/Vector.h"
|
|
|
|
namespace blink {
|
|
|
|
class ExceptionState;
|
|
class MutationCallback;
|
|
class MutationObserver;
|
|
class MutationObserverRegistration;
|
|
class MutationRecord;
|
|
class Node;
|
|
|
|
typedef unsigned char MutationObserverOptions;
|
|
typedef unsigned char MutationRecordDeliveryOptions;
|
|
|
|
typedef HashSet<RefPtr<MutationObserver> > MutationObserverSet;
|
|
typedef HashSet<RawPtr<MutationObserverRegistration> > MutationObserverRegistrationSet;
|
|
typedef Vector<RefPtr<MutationObserver> > MutationObserverVector;
|
|
typedef Vector<RefPtr<MutationRecord> > MutationRecordVector;
|
|
|
|
class MutationObserver final : public RefCounted<MutationObserver> {
|
|
public:
|
|
enum MutationType {
|
|
ChildList = 1 << 0,
|
|
Attributes = 1 << 1,
|
|
CharacterData = 1 << 2,
|
|
|
|
AllMutationTypes = ChildList | Attributes | CharacterData
|
|
};
|
|
|
|
enum ObservationFlags {
|
|
Subtree = 1 << 3,
|
|
AttributeFilter = 1 << 4
|
|
};
|
|
|
|
enum DeliveryFlags {
|
|
AttributeOldValue = 1 << 5,
|
|
CharacterDataOldValue = 1 << 6,
|
|
};
|
|
|
|
static PassRefPtr<MutationObserver> create(PassOwnPtr<MutationCallback>);
|
|
static void resumeSuspendedObservers();
|
|
static void deliverMutations();
|
|
|
|
~MutationObserver();
|
|
|
|
void observe(Node*, ExceptionState&);
|
|
Vector<RefPtr<MutationRecord> > takeRecords();
|
|
void disconnect();
|
|
void observationStarted(MutationObserverRegistration*);
|
|
void observationEnded(MutationObserverRegistration*);
|
|
void enqueueMutationRecord(PassRefPtr<MutationRecord>);
|
|
void setHasTransientRegistration();
|
|
bool canDeliver();
|
|
|
|
HashSet<RawPtr<Node> > getObservedNodes() const;
|
|
|
|
private:
|
|
struct ObserverLessThan;
|
|
|
|
explicit MutationObserver(PassOwnPtr<MutationCallback>);
|
|
void deliver();
|
|
|
|
OwnPtr<MutationCallback> m_callback;
|
|
MutationRecordVector m_records;
|
|
MutationObserverRegistrationSet m_registrations;
|
|
unsigned m_priority;
|
|
};
|
|
|
|
} // namespace blink
|
|
|
|
#endif // SKY_ENGINE_CORE_DOM_MUTATIONOBSERVER_H_
|