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
|
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CSSGlobalRuleSet_h
#define CSSGlobalRuleSet_h
#include "core/css/RuleFeature.h"
namespace blink {
class Document;
class RuleSet;
// A per Document collection of CSS metadata used for style matching and
// invalidation. The data is aggregated from author rulesets from all TreeScopes
// in the whole Document as well as UA stylesheets and watched selectors which
// apply to elements in all TreeScopes.
//
// TODO(rune@opera.com): We would like to move as much of this data as possible
// to the ScopedStyleResolver as possible to avoid full reconstruction of these
// rulesets on shadow tree changes. See https://crbug.com/401359
class CSSGlobalRuleSet {
DISALLOW_NEW();
WTF_MAKE_NONCOPYABLE(CSSGlobalRuleSet);
public:
CSSGlobalRuleSet() {}
void dispose();
void initWatchedSelectorsRuleSet(Document&);
void markDirty() { m_isDirty = true; }
bool isDirty() const { return m_isDirty; }
void update(Document&);
const RuleFeatureSet& ruleFeatureSet() const { return m_features; }
RuleSet* siblingRuleSet() const { return m_siblingRuleSet; }
RuleSet* uncommonAttributeRuleSet() const {
return m_uncommonAttributeRuleSet;
}
RuleSet* watchedSelectorsRuleSet() const { return m_watchedSelectorsRuleSet; }
bool hasFullscreenUAStyle() const { return m_hasFullscreenUAStyle; }
DECLARE_TRACE();
private:
// Constructed from rules in all TreeScopes including UA style and style
// injected from extensions.
RuleFeatureSet m_features;
Member<RuleSet> m_siblingRuleSet;
Member<RuleSet> m_uncommonAttributeRuleSet;
// Rules injected from extensions.
Member<RuleSet> m_watchedSelectorsRuleSet;
bool m_hasFullscreenUAStyle = false;
bool m_isDirty = true;
};
} // namespace blink
#endif // CSSGlobalRuleSet_h
|
