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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_ServoStyleSet_h
#define mozilla_ServoStyleSet_h
#include "mozilla/EnumeratedArray.h"
#include "mozilla/EventStates.h"
#include "mozilla/ServoBindingTypes.h"
#include "mozilla/ServoElementSnapshot.h"
#include "mozilla/StyleSheetInlines.h"
#include "mozilla/SheetType.h"
#include "mozilla/UniquePtr.h"
#include "nsCSSPseudoElements.h"
#include "nsChangeHint.h"
#include "nsIAtom.h"
#include "nsTArray.h"
namespace mozilla {
namespace dom {
class Element;
} // namespace dom
class CSSStyleSheet;
class ServoRestyleManager;
class ServoStyleSheet;
} // namespace mozilla
class nsIDocument;
class nsStyleContext;
class nsPresContext;
struct TreeMatchContext;
namespace mozilla {
/**
* The set of style sheets that apply to a document, backed by a Servo
* Stylist. A ServoStyleSet contains ServoStyleSheets.
*/
class ServoStyleSet
{
friend class ServoRestyleManager;
public:
ServoStyleSet();
void Init(nsPresContext* aPresContext);
void BeginShutdown();
void Shutdown();
bool GetAuthorStyleDisabled() const;
nsresult SetAuthorStyleDisabled(bool aStyleDisabled);
void BeginUpdate();
nsresult EndUpdate();
already_AddRefed<nsStyleContext>
ResolveStyleFor(dom::Element* aElement,
nsStyleContext* aParentContext);
already_AddRefed<nsStyleContext>
ResolveStyleFor(dom::Element* aElement,
nsStyleContext* aParentContext,
TreeMatchContext& aTreeMatchContext);
already_AddRefed<nsStyleContext>
ResolveStyleForText(nsIContent* aTextNode,
nsStyleContext* aParentContext);
already_AddRefed<nsStyleContext>
ResolveStyleForOtherNonElement(nsStyleContext* aParentContext);
already_AddRefed<nsStyleContext>
ResolvePseudoElementStyle(dom::Element* aParentElement,
mozilla::CSSPseudoElementType aType,
nsStyleContext* aParentContext,
dom::Element* aPseudoElement);
// aFlags is an nsStyleSet flags bitfield
already_AddRefed<nsStyleContext>
ResolveAnonymousBoxStyle(nsIAtom* aPseudoTag, nsStyleContext* aParentContext,
uint32_t aFlags = 0);
// manage the set of style sheets in the style set
nsresult AppendStyleSheet(SheetType aType, ServoStyleSheet* aSheet);
nsresult PrependStyleSheet(SheetType aType, ServoStyleSheet* aSheet);
nsresult RemoveStyleSheet(SheetType aType, ServoStyleSheet* aSheet);
nsresult ReplaceSheets(SheetType aType,
const nsTArray<RefPtr<ServoStyleSheet>>& aNewSheets);
nsresult InsertStyleSheetBefore(SheetType aType,
ServoStyleSheet* aNewSheet,
ServoStyleSheet* aReferenceSheet);
int32_t SheetCount(SheetType aType) const;
ServoStyleSheet* StyleSheetAt(SheetType aType, int32_t aIndex) const;
nsresult RemoveDocStyleSheet(ServoStyleSheet* aSheet);
nsresult AddDocStyleSheet(ServoStyleSheet* aSheet, nsIDocument* aDocument);
// check whether there is ::before/::after style for an element
already_AddRefed<nsStyleContext>
ProbePseudoElementStyle(dom::Element* aParentElement,
mozilla::CSSPseudoElementType aType,
nsStyleContext* aParentContext);
already_AddRefed<nsStyleContext>
ProbePseudoElementStyle(dom::Element* aParentElement,
mozilla::CSSPseudoElementType aType,
nsStyleContext* aParentContext,
TreeMatchContext& aTreeMatchContext,
dom::Element* aPseudoElement = nullptr);
// Test if style is dependent on content state
nsRestyleHint HasStateDependentStyle(dom::Element* aElement,
EventStates aStateMask);
nsRestyleHint HasStateDependentStyle(
dom::Element* aElement, mozilla::CSSPseudoElementType aPseudoType,
dom::Element* aPseudoElement, EventStates aStateMask);
/**
* Computes a restyle hint given a element and a previous element snapshot.
*/
nsRestyleHint ComputeRestyleHint(dom::Element* aElement,
ServoElementSnapshot* aSnapshot);
/**
* Performs a Servo traversal to compute style for all dirty nodes in the
* document. The root element must be non-null.
*
* If aLeaveDirtyBits is true, the dirty/dirty-descendant bits are not
* cleared.
*/
void StyleDocument(bool aLeaveDirtyBits);
/**
* Eagerly styles a subtree of dirty nodes that were just appended to the
* tree. This is used in situations where we need the style immediately and
* cannot wait for a future batch restyle.
*
* The subtree must have the root dirty bit set, which currently gets
* propagated to all descendants. The dirty bits are cleared before
* returning.
*/
void StyleNewSubtree(nsIContent* aContent);
/**
* Like the above, but does not assume that the root node is dirty. When
* appending multiple children to a potentially-non-dirty node, it's
* preferable to call StyleNewChildren on the node rather than making multiple
* calls to StyleNewSubtree on each child, since it allows for more
* parallelism.
*/
void StyleNewChildren(nsIContent* aParent);
private:
already_AddRefed<nsStyleContext> GetContext(already_AddRefed<ServoComputedValues>,
nsStyleContext* aParentContext,
nsIAtom* aPseudoTag,
CSSPseudoElementType aPseudoType);
already_AddRefed<nsStyleContext> GetContext(nsIContent* aContent,
nsStyleContext* aParentContext,
nsIAtom* aPseudoTag,
CSSPseudoElementType aPseudoType);
nsPresContext* mPresContext;
UniquePtr<RawServoStyleSet> mRawSet;
EnumeratedArray<SheetType, SheetType::Count,
nsTArray<RefPtr<ServoStyleSheet>>> mSheets;
int32_t mBatching;
};
} // namespace mozilla
#endif // mozilla_ServoStyleSet_h
|
