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, 2012 Apple Computer, Inc.
5 * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB.  If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#include "config.h"
24#include "core/css/CSSMediaRule.h"
25
26#include "core/css/StyleRule.h"
27#include "wtf/text/StringBuilder.h"
28
29namespace blink {
30
31CSSMediaRule::CSSMediaRule(StyleRuleMedia* mediaRule, CSSStyleSheet* parent)
32    : CSSGroupingRule(mediaRule, parent)
33{
34}
35
36CSSMediaRule::~CSSMediaRule()
37{
38#if !ENABLE(OILPAN)
39    if (m_mediaCSSOMWrapper)
40        m_mediaCSSOMWrapper->clearParentRule();
41#endif
42}
43
44MediaQuerySet* CSSMediaRule::mediaQueries() const
45{
46    return toStyleRuleMedia(m_groupRule.get())->mediaQueries();
47}
48
49String CSSMediaRule::cssText() const
50{
51    StringBuilder result;
52    result.appendLiteral("@media ");
53    if (mediaQueries()) {
54        result.append(mediaQueries()->mediaText());
55        result.append(' ');
56    }
57    result.appendLiteral("{ \n");
58    appendCSSTextForItems(result);
59    result.append('}');
60    return result.toString();
61}
62
63MediaList* CSSMediaRule::media() const
64{
65    if (!mediaQueries())
66        return 0;
67    if (!m_mediaCSSOMWrapper)
68        m_mediaCSSOMWrapper = MediaList::create(mediaQueries(), const_cast<CSSMediaRule*>(this));
69    return m_mediaCSSOMWrapper.get();
70}
71
72void CSSMediaRule::reattach(StyleRuleBase* rule)
73{
74    CSSGroupingRule::reattach(rule);
75    if (m_mediaCSSOMWrapper && mediaQueries())
76        m_mediaCSSOMWrapper->reattach(mediaQueries());
77}
78
79void CSSMediaRule::trace(Visitor* visitor)
80{
81    visitor->trace(m_mediaCSSOMWrapper);
82    CSSGroupingRule::trace(visitor);
83}
84} // namespace blink
85