1/*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
4 * Copyright (C) 2002, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#include "config.h"
23#include "core/css/CSSPageRule.h"
24
25#include "core/css/CSSParser.h"
26#include "core/css/CSSSelector.h"
27#include "core/css/CSSStyleSheet.h"
28#include "core/css/PropertySetCSSStyleDeclaration.h"
29#include "core/css/StylePropertySet.h"
30#include "core/css/StyleRule.h"
31#include "wtf/text/StringBuilder.h"
32
33namespace WebCore {
34
35CSSPageRule::CSSPageRule(StyleRulePage* pageRule, CSSStyleSheet* parent)
36    : CSSRule(parent)
37    , m_pageRule(pageRule)
38{
39}
40
41CSSPageRule::~CSSPageRule()
42{
43    if (m_propertiesCSSOMWrapper)
44        m_propertiesCSSOMWrapper->clearParentRule();
45}
46
47CSSStyleDeclaration* CSSPageRule::style() const
48{
49    if (!m_propertiesCSSOMWrapper)
50        m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_pageRule->mutableProperties(), const_cast<CSSPageRule*>(this));
51    return m_propertiesCSSOMWrapper.get();
52}
53
54String CSSPageRule::selectorText() const
55{
56    StringBuilder text;
57    text.appendLiteral("@page");
58    const CSSSelector* selector = m_pageRule->selector();
59    if (selector) {
60        String pageSpecification = selector->selectorText();
61        if (!pageSpecification.isEmpty() && pageSpecification != starAtom) {
62            text.append(' ');
63            text.append(pageSpecification);
64        }
65    }
66    return text.toString();
67}
68
69void CSSPageRule::setSelectorText(const String& selectorText)
70{
71    CSSParser parser(parserContext());
72    CSSSelectorList selectorList;
73    parser.parseSelector(selectorText, selectorList);
74    if (!selectorList.isValid())
75        return;
76
77    CSSStyleSheet::RuleMutationScope mutationScope(this);
78
79    m_pageRule->wrapperAdoptSelectorList(selectorList);
80}
81
82String CSSPageRule::cssText() const
83{
84    StringBuilder result;
85    result.append(selectorText());
86    result.appendLiteral(" { ");
87    String decls = m_pageRule->properties()->asText();
88    result.append(decls);
89    if (!decls.isEmpty())
90        result.append(' ');
91    result.append('}');
92    return result.toString();
93}
94
95void CSSPageRule::reattach(StyleRuleBase* rule)
96{
97    ASSERT(rule);
98    ASSERT_WITH_SECURITY_IMPLICATION(rule->isPageRule());
99    m_pageRule = static_cast<StyleRulePage*>(rule);
100    if (m_propertiesCSSOMWrapper)
101        m_propertiesCSSOMWrapper->reattach(m_pageRule->mutableProperties());
102}
103
104} // namespace WebCore
105