1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* 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.
*/
#pragma once
#include "DocumentInlines.h"
#include "MutationObserver.h"
#include <memory>
#include <wtf/HashMap.h>
namespace WebCore {
class QualifiedName;
class MutationObserverInterestGroup {
WTF_MAKE_FAST_ALLOCATED;
public:
MutationObserverInterestGroup(HashMap<Ref<MutationObserver>, MutationRecordDeliveryOptions>&&, MutationRecordDeliveryOptions);
static std::unique_ptr<MutationObserverInterestGroup> createForChildListMutation(Node& target)
{
if (!target.document().hasMutationObserversOfType(MutationObserverOptionType::ChildList))
return nullptr;
MutationRecordDeliveryOptions oldValueFlag;
return createIfNeeded(target, MutationObserverOptionType::ChildList, oldValueFlag);
}
static std::unique_ptr<MutationObserverInterestGroup> createForCharacterDataMutation(Node& target)
{
if (!target.document().hasMutationObserversOfType(MutationObserverOptionType::CharacterData))
return nullptr;
return createIfNeeded(target, MutationObserverOptionType::CharacterData, MutationObserverOptionType::CharacterDataOldValue);
}
static std::unique_ptr<MutationObserverInterestGroup> createForAttributesMutation(Node& target, const QualifiedName& attributeName)
{
if (!target.document().hasMutationObserversOfType(MutationObserverOptionType::Attributes))
return nullptr;
return createIfNeeded(target, MutationObserverOptionType::Attributes, MutationObserverOptionType::AttributeOldValue, &attributeName);
}
bool isOldValueRequested() const;
void enqueueMutationRecord(Ref<MutationRecord>&&);
private:
static std::unique_ptr<MutationObserverInterestGroup> createIfNeeded(Node& target, MutationObserverOptionType, MutationRecordDeliveryOptions oldValueFlag, const QualifiedName* attributeName = nullptr);
bool hasOldValue(MutationRecordDeliveryOptions options) const { return options.containsAny(m_oldValueFlag); }
HashMap<Ref<MutationObserver>, MutationRecordDeliveryOptions> m_observers;
MutationRecordDeliveryOptions m_oldValueFlag;
};
} // namespace WebCore
|
