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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* Copyright (C) 2013-2016 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "AnchorPositionEvaluator.h"
#include "PropertyCascade.h"
#include "SelectorChecker.h"
#include "SelectorMatchingState.h"
#include "StyleChange.h"
#include "StyleSharingResolver.h"
#include "StyleUpdate.h"
#include "Styleable.h"
#include <wtf/Function.h>
#include <wtf/Ref.h>
namespace WebCore {
class Document;
class Element;
class Node;
class RenderStyle;
class ShadowRoot;
struct PositionTryFallback;
namespace Style {
class Resolver;
struct MatchResult;
struct PseudoElementIdentifier;
struct ResolutionContext;
struct ResolvedStyle;
enum class IsInDisplayNoneTree : bool { No, Yes };
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(TreeResolverScope);
class TreeResolver {
public:
TreeResolver(Document&, std::unique_ptr<Update> = { });
~TreeResolver();
std::unique_ptr<Update> resolve();
bool hasUnresolvedQueryContainers() const { return m_hasUnresolvedQueryContainers; }
bool hasUnresolvedAnchorPositionedElements() const { return m_hasUnresolvedAnchorPositionedElements; }
private:
enum class ResolutionType : uint8_t { RebuildUsingExisting, AnimationOnly, FastPathInherit, FullWithMatchResultCache, Full };
ResolvedStyle styleForStyleable(const Styleable&, ResolutionType, const ResolutionContext&, const RenderStyle* existingStyle);
void resolveComposedTree();
const RenderStyle* existingStyle(const Element&);
enum class AnchorPositionedElementAction : bool { None, SkipDescendants };
enum class QueryContainerAction : uint8_t { None, Resolve, Continue };
enum class DescendantsToResolve : uint8_t { None, RebuildAllUsingExisting, ChildrenWithExplicitInherit, Children, All };
QueryContainerAction updateStateForQueryContainer(Element&, const RenderStyle*, Change&, DescendantsToResolve&);
std::pair<ElementUpdate, DescendantsToResolve> resolveElement(Element&, const RenderStyle* existingStyle, ResolutionType);
ElementUpdate createAnimatedElementUpdate(ResolvedStyle&&, const Styleable&, Change, const ResolutionContext&, IsInDisplayNoneTree = IsInDisplayNoneTree::No);
std::unique_ptr<RenderStyle> resolveStartingStyle(const ResolvedStyle&, const Styleable&, const ResolutionContext&) const;
std::unique_ptr<RenderStyle> resolveAfterChangeStyleForNonAnimated(const ResolvedStyle&, const Styleable&, const ResolutionContext&) const;
std::unique_ptr<RenderStyle> resolveAgainInDifferentContext(const ResolvedStyle&, const Styleable&, const RenderStyle& parentStyle, OptionSet<PropertyCascade::PropertyType>, const std::optional<PositionTryFallback>&, const ResolutionContext&) const;
const RenderStyle& parentAfterChangeStyle(const Styleable&, const ResolutionContext&) const;
UncheckedKeyHashSet<AnimatableCSSProperty> applyCascadeAfterAnimation(RenderStyle&, const UncheckedKeyHashSet<AnimatableCSSProperty>&, bool isTransition, const MatchResult&, const Element&, const ResolutionContext&);
std::optional<ElementUpdate> resolvePseudoElement(Element&, const PseudoElementIdentifier&, const ElementUpdate&, IsInDisplayNoneTree);
std::optional<ElementUpdate> resolveAncestorPseudoElement(Element&, const PseudoElementIdentifier&, const ElementUpdate&);
std::optional<ResolvedStyle> resolveAncestorFirstLinePseudoElement(Element&, const ElementUpdate&);
std::optional<ResolvedStyle> resolveAncestorFirstLetterPseudoElement(Element&, const ElementUpdate&, ResolutionContext&);
struct Scope : RefCounted<Scope> {
WTF_MAKE_STRUCT_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(TreeResolverScope);
Ref<Resolver> resolver;
SelectorMatchingState selectorMatchingState;
SharingResolver sharingResolver;
RefPtr<ShadowRoot> shadowRoot;
RefPtr<Scope> enclosingScope;
Scope(Document&, Update&);
Scope(ShadowRoot&, Scope& enclosingScope);
~Scope();
};
struct Parent {
Element* element;
const RenderStyle& style;
Change change { Change::None };
DescendantsToResolve descendantsToResolve { DescendantsToResolve::None };
bool didPushScope { false };
bool resolvedFirstLineAndLetterChild { false };
bool needsUpdateQueryContainerDependentStyle { false };
IsInDisplayNoneTree isInDisplayNoneTree { IsInDisplayNoneTree::No };
Parent(Document&);
Parent(Element&, const RenderStyle&, Change, DescendantsToResolve, IsInDisplayNoneTree);
};
Scope& scope() { return m_scopeStack.last(); }
const Scope& scope() const { return m_scopeStack.last(); }
Parent& parent() { return m_parentStack.last(); }
const Parent& parent() const { return m_parentStack.last(); }
void pushScope(ShadowRoot&);
void pushEnclosingScope();
void popScope();
void pushParent(Element&, const RenderStyle&, Change, DescendantsToResolve, IsInDisplayNoneTree);
void popParent();
void popParentsToDepth(unsigned depth);
DescendantsToResolve computeDescendantsToResolve(const ElementUpdate&, const RenderStyle* existingStyle, Validity) const;
static std::optional<ResolutionType> determineResolutionType(const Element&, const RenderStyle*, DescendantsToResolve, Change parentChange);
static void resetDescendantStyleRelations(Element&, DescendantsToResolve);
ResolutionContext makeResolutionContext();
ResolutionContext makeResolutionContextForPseudoElement(const ElementUpdate&, const PseudoElementIdentifier&);
std::optional<ResolutionContext> makeResolutionContextForInheritedFirstLine(const ElementUpdate&, const RenderStyle& inheritStyle);
const Parent* boxGeneratingParent() const;
const RenderStyle* parentBoxStyle() const;
const RenderStyle* parentBoxStyleForPseudoElement(const ElementUpdate&) const;
AnchorPositionedElementAction updateAnchorPositioningState(Element&, const RenderStyle*);
void generatePositionOptionsIfNeeded(const ResolvedStyle&, const Styleable&, const ResolutionContext&);
std::unique_ptr<RenderStyle> generatePositionOption(const PositionTryFallback&, const ResolvedStyle&, const Styleable&, const ResolutionContext&);
std::optional<ResolvedStyle> tryChoosePositionOption(const Styleable&, const RenderStyle* existingStyle);
struct QueryContainerState {
Change change { Change::None };
DescendantsToResolve descendantsToResolve { DescendantsToResolve::None };
};
CheckedRef<Document> m_document;
std::unique_ptr<RenderStyle> m_documentElementStyle;
Vector<Ref<Scope>, 4> m_scopeStack;
Vector<Parent, 32> m_parentStack;
bool m_didSeePendingStylesheet { false };
UncheckedKeyHashMap<Ref<Element>, std::optional<QueryContainerState>> m_queryContainerStates;
bool m_hasUnresolvedQueryContainers { false };
bool m_hasUnresolvedAnchorPositionedElements { false };
struct PositionOptions {
std::unique_ptr<RenderStyle> originalStyle;
Vector<std::unique_ptr<RenderStyle>> optionStyles { };
size_t index { 0 };
bool chosen { false };
};
HashMap<Ref<Element>, PositionOptions> m_positionOptions;
std::unique_ptr<Update> m_update;
};
// Integrate with the HTML5 event loop instead, see EventLoop.cpp and consumers.
void deprecatedQueuePostResolutionCallback(Function<void()>&&);
bool postResolutionCallbacksAreSuspended();
class PostResolutionCallbackDisabler {
public:
enum class DrainCallbacks : bool { No, Yes };
explicit PostResolutionCallbackDisabler(Document&, DrainCallbacks = DrainCallbacks::Yes);
~PostResolutionCallbackDisabler();
private:
DrainCallbacks m_drainCallbacks;
};
}
}
|
