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
|
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
* Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
* Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
* Copyright (C) Research In Motion Limited 2011. All rights reserved.
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "DocumentRuleSets.h"
#include "CSSStyleSheet.h"
#include "ExtensionStyleSheets.h"
#include "MediaQueryEvaluator.h"
#include "StyleResolver.h"
#include "StyleSheetContents.h"
namespace WebCore {
DocumentRuleSets::DocumentRuleSets()
{
}
DocumentRuleSets::~DocumentRuleSets()
{
}
void DocumentRuleSets::initUserStyle(ExtensionStyleSheets& extensionStyleSheets, const MediaQueryEvaluator& medium, StyleResolver& resolver)
{
auto tempUserStyle = std::make_unique<RuleSet>();
if (CSSStyleSheet* pageUserSheet = extensionStyleSheets.pageUserSheet())
tempUserStyle->addRulesFromSheet(pageUserSheet->contents(), medium, &resolver);
collectRulesFromUserStyleSheets(extensionStyleSheets.injectedUserStyleSheets(), *tempUserStyle, medium, resolver);
collectRulesFromUserStyleSheets(extensionStyleSheets.documentUserStyleSheets(), *tempUserStyle, medium, resolver);
if (tempUserStyle->ruleCount() > 0 || tempUserStyle->pageRules().size() > 0)
m_userStyle = WTFMove(tempUserStyle);
}
void DocumentRuleSets::collectRulesFromUserStyleSheets(const Vector<RefPtr<CSSStyleSheet>>& userSheets, RuleSet& userStyle, const MediaQueryEvaluator& medium, StyleResolver& resolver)
{
for (unsigned i = 0; i < userSheets.size(); ++i) {
ASSERT(userSheets[i]->contents().isUserStyleSheet());
userStyle.addRulesFromSheet(userSheets[i]->contents(), medium, &resolver);
}
}
static std::unique_ptr<RuleSet> makeRuleSet(const Vector<RuleFeature>& rules)
{
size_t size = rules.size();
if (!size)
return nullptr;
auto ruleSet = std::make_unique<RuleSet>();
for (size_t i = 0; i < size; ++i)
ruleSet->addRule(rules[i].rule, rules[i].selectorIndex, rules[i].hasDocumentSecurityOrigin ? RuleHasDocumentSecurityOrigin : RuleHasNoSpecialState);
ruleSet->shrinkToFit();
return ruleSet;
}
void DocumentRuleSets::resetAuthorStyle()
{
m_authorStyle = std::make_unique<RuleSet>();
m_authorStyle->disableAutoShrinkToFit();
}
void DocumentRuleSets::appendAuthorStyleSheets(const Vector<RefPtr<CSSStyleSheet>>& styleSheets, MediaQueryEvaluator* medium, InspectorCSSOMWrappers& inspectorCSSOMWrappers, StyleResolver* resolver)
{
// This handles sheets added to the end of the stylesheet list only. In other cases the style resolver
// needs to be reconstructed. To handle insertions too the rule order numbers would need to be updated.
for (auto& cssSheet : styleSheets) {
ASSERT(!cssSheet->disabled());
if (cssSheet->mediaQueries() && !medium->eval(cssSheet->mediaQueries(), resolver))
continue;
m_authorStyle->addRulesFromSheet(cssSheet->contents(), *medium, resolver);
inspectorCSSOMWrappers.collectFromStyleSheetIfNeeded(cssSheet.get());
}
m_authorStyle->shrinkToFit();
collectFeatures();
}
void DocumentRuleSets::collectFeatures() const
{
m_features.clear();
// Collect all ids and rules using sibling selectors (:first-child and similar)
// in the current set of stylesheets. Style sharing code uses this information to reject
// sharing candidates.
if (CSSDefaultStyleSheets::defaultStyle)
m_features.add(CSSDefaultStyleSheets::defaultStyle->features());
m_defaultStyleVersionOnFeatureCollection = CSSDefaultStyleSheets::defaultStyleVersion;
if (m_authorStyle)
m_features.add(m_authorStyle->features());
if (m_userStyle)
m_features.add(m_userStyle->features());
m_siblingRuleSet = makeRuleSet(m_features.siblingRules);
m_uncommonAttributeRuleSet = makeRuleSet(m_features.uncommonAttributeRules);
}
RuleSet* DocumentRuleSets::ancestorClassRules(AtomicStringImpl* className) const
{
auto addResult = m_ancestorClassRuleSets.add(className, nullptr);
if (addResult.isNewEntry) {
if (auto* rules = m_features.ancestorClassRules.get(className))
addResult.iterator->value = makeRuleSet(*rules);
}
return addResult.iterator->value.get();
}
const DocumentRuleSets::AttributeRules* DocumentRuleSets::ancestorAttributeRulesForHTML(AtomicStringImpl* attributeName) const
{
auto addResult = m_ancestorAttributeRuleSetsForHTML.add(attributeName, nullptr);
auto& value = addResult.iterator->value;
if (addResult.isNewEntry) {
if (auto* rules = m_features.ancestorAttributeRulesForHTML.get(attributeName)) {
value = std::make_unique<AttributeRules>();
value->attributeSelectors.reserveCapacity(rules->selectors.size());
for (auto* selector : rules->selectors.values())
value->attributeSelectors.uncheckedAppend(selector);
value->ruleSet = makeRuleSet(rules->features);
}
}
return value.get();
}
} // namespace WebCore
|
