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
|
/*
* 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, 2013 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) 2012 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 "PageRuleCollector.h"
#include "CSSDefaultStyleSheets.h"
#include "StylePropertySet.h"
#include "StyleRule.h"
namespace WebCore {
static inline bool comparePageRules(const StyleRulePage* r1, const StyleRulePage* r2)
{
return r1->selector()->specificity() < r2->selector()->specificity();
}
bool PageRuleCollector::isLeftPage(int pageIndex) const
{
bool isFirstPageLeft = false;
if (!m_state.rootElementStyle()->isLeftToRightDirection())
isFirstPageLeft = true;
return (pageIndex + (isFirstPageLeft ? 1 : 0)) % 2;
}
bool PageRuleCollector::isFirstPage(int pageIndex) const
{
// FIXME: In case of forced left/right page, page at index 1 (not 0) can be the first page.
return (!pageIndex);
}
String PageRuleCollector::pageName(int /* pageIndex */) const
{
// FIXME: Implement page index to page name mapping.
return "";
}
void PageRuleCollector::matchAllPageRules(int pageIndex)
{
const bool isLeft = isLeftPage(pageIndex);
const bool isFirst = isFirstPage(pageIndex);
const String page = pageName(pageIndex);
matchPageRules(CSSDefaultStyleSheets::defaultPrintStyle, isLeft, isFirst, page);
matchPageRules(m_ruleSets.userStyle(), isLeft, isFirst, page);
// Only consider the global author RuleSet for @page rules, as per the HTML5 spec.
matchPageRules(m_ruleSets.authorStyle(), isLeft, isFirst, page);
}
void PageRuleCollector::matchPageRules(RuleSet* rules, bool isLeftPage, bool isFirstPage, const String& pageName)
{
if (!rules)
return;
Vector<StyleRulePage*> matchedPageRules;
matchPageRulesForList(matchedPageRules, rules->pageRules(), isLeftPage, isFirstPage, pageName);
if (matchedPageRules.isEmpty())
return;
std::stable_sort(matchedPageRules.begin(), matchedPageRules.end(), comparePageRules);
for (unsigned i = 0; i < matchedPageRules.size(); i++)
m_result.addMatchedProperties(matchedPageRules[i]->properties());
}
static bool checkPageSelectorComponents(const CSSSelector* selector, bool isLeftPage, bool isFirstPage, const String& pageName)
{
for (const CSSSelector* component = selector; component; component = component->tagHistory()) {
if (component->m_match == CSSSelector::Tag) {
const AtomicString& localName = component->tagQName().localName();
if (localName != starAtom && localName != pageName)
return false;
}
CSSSelector::PseudoType pseudoType = component->pseudoType();
if ((pseudoType == CSSSelector::PseudoLeftPage && !isLeftPage)
|| (pseudoType == CSSSelector::PseudoRightPage && isLeftPage)
|| (pseudoType == CSSSelector::PseudoFirstPage && !isFirstPage))
{
return false;
}
}
return true;
}
void PageRuleCollector::matchPageRulesForList(Vector<StyleRulePage*>& matchedRules, const Vector<StyleRulePage*>& rules, bool isLeftPage, bool isFirstPage, const String& pageName)
{
for (unsigned i = 0; i < rules.size(); ++i) {
StyleRulePage* rule = rules[i];
if (!checkPageSelectorComponents(rule->selector(), isLeftPage, isFirstPage, pageName))
continue;
// If the rule has no properties to apply, then ignore it.
const StylePropertySet* properties = rule->properties();
if (!properties || properties->isEmpty())
continue;
// Add this rule to our list of matched rules.
matchedRules.append(rule);
}
}
} // namespace WebCore
|
