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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright (C) 2012 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.
* * 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 ElementShadow_h
#define ElementShadow_h
#include "core/dom/shadow/InsertionPoint.h"
#include "core/dom/shadow/SelectRuleFeatureSet.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "platform/heap/Handle.h"
#include "wtf/DoublyLinkedList.h"
#include "wtf/HashMap.h"
#include "wtf/Noncopyable.h"
#include "wtf/PassOwnPtr.h"
namespace WebCore {
class ElementShadow FINAL : public NoBaseWillBeGarbageCollectedFinalized<ElementShadow> {
WTF_MAKE_NONCOPYABLE(ElementShadow);
WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
public:
static PassOwnPtrWillBeRawPtr<ElementShadow> create();
~ElementShadow();
Element* host() const;
ShadowRoot* youngestShadowRoot() const { return m_shadowRoots.head(); }
ShadowRoot* oldestShadowRoot() const { return m_shadowRoots.tail(); }
ElementShadow* containingShadow() const;
ShadowRoot& addShadowRoot(Element& shadowHost, ShadowRoot::ShadowRootType);
bool hasSameStyles(const ElementShadow*) const;
void attach(const Node::AttachContext&);
void detach(const Node::AttachContext&);
void didAffectSelector(AffectedSelectorMask);
void willAffectSelector();
const SelectRuleFeatureSet& ensureSelectFeatureSet();
void distributeIfNeeded();
void setNeedsDistributionRecalc();
const InsertionPoint* finalDestinationInsertionPointFor(const Node*) const;
const DestinationInsertionPoints* destinationInsertionPointsFor(const Node*) const;
void didDistributeNode(const Node*, InsertionPoint*);
void trace(Visitor*);
private:
ElementShadow();
#if !ENABLE(OILPAN)
void removeDetachedShadowRoots();
#endif
void distribute();
void clearDistribution();
void collectSelectFeatureSetFrom(ShadowRoot&);
void distributeNodeChildrenTo(InsertionPoint*, ContainerNode*);
bool needsSelectFeatureSet() const { return m_needsSelectFeatureSet; }
void setNeedsSelectFeatureSet() { m_needsSelectFeatureSet = true; }
typedef WillBeHeapHashMap<RawPtrWillBeMember<const Node>, DestinationInsertionPoints> NodeToDestinationInsertionPoints;
NodeToDestinationInsertionPoints m_nodeToInsertionPoints;
SelectRuleFeatureSet m_selectFeatures;
// FIXME: Oilpan: add a heap-based version of DoublyLinkedList<>.
DoublyLinkedList<ShadowRoot> m_shadowRoots;
bool m_needsDistributionRecalc;
bool m_needsSelectFeatureSet;
};
inline Element* ElementShadow::host() const
{
ASSERT(!m_shadowRoots.isEmpty());
return youngestShadowRoot()->host();
}
inline ShadowRoot* Node::youngestShadowRoot() const
{
if (!isElementNode())
return 0;
return toElement(this)->youngestShadowRoot();
}
inline ShadowRoot* Element::youngestShadowRoot() const
{
if (ElementShadow* shadow = this->shadow())
return shadow->youngestShadowRoot();
return 0;
}
inline ElementShadow* ElementShadow::containingShadow() const
{
if (ShadowRoot* parentRoot = host()->containingShadowRoot())
return parentRoot->owner();
return 0;
}
inline void ElementShadow::distributeIfNeeded()
{
if (m_needsDistributionRecalc)
distribute();
m_needsDistributionRecalc = false;
}
} // namespace
#endif
|
