1/*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2006, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#pragma once
22
23#include "ExceptionOr.h"
24#include "MediaQueryParserContext.h"
25#include <memory>
26#include <wtf/Forward.h>
27#include <wtf/Vector.h>
28
29namespace WTF {
30class TextStream;
31}
32
33namespace WebCore {
34
35class CSSParser;
36class CSSRule;
37class CSSStyleSheet;
38class Document;
39class MediaQuery;
40
41class MediaQuerySet final : public RefCounted<MediaQuerySet> {
42public:
43 static Ref<MediaQuerySet> create()
44 {
45 return adoptRef(*new MediaQuerySet);
46 }
47 static WEBCORE_EXPORT Ref<MediaQuerySet> create(const String& mediaString, MediaQueryParserContext = MediaQueryParserContext());
48
49 WEBCORE_EXPORT ~MediaQuerySet();
50
51 bool set(const String&);
52 bool add(const String&);
53 bool remove(const String&);
54
55 void addMediaQuery(MediaQuery&&);
56
57 const Vector<MediaQuery>& queryVector() const { return m_queries; }
58
59 int lastLine() const { return m_lastLine; }
60 void setLastLine(int lastLine) { m_lastLine = lastLine; }
61
62 WEBCORE_EXPORT String mediaText() const;
63
64 Ref<MediaQuerySet> copy() const { return adoptRef(*new MediaQuerySet(*this)); }
65
66 void shrinkToFit();
67
68private:
69 MediaQuerySet();
70 WEBCORE_EXPORT MediaQuerySet(const String& mediaQuery);
71 MediaQuerySet(const MediaQuerySet&);
72
73 int m_lastLine { 0 };
74 Vector<MediaQuery> m_queries;
75};
76
77class MediaList final : public RefCounted<MediaList> {
78public:
79 static Ref<MediaList> create(MediaQuerySet* mediaQueries, CSSStyleSheet* parentSheet)
80 {
81 return adoptRef(*new MediaList(mediaQueries, parentSheet));
82 }
83 static Ref<MediaList> create(MediaQuerySet* mediaQueries, CSSRule* parentRule)
84 {
85 return adoptRef(*new MediaList(mediaQueries, parentRule));
86 }
87
88 WEBCORE_EXPORT ~MediaList();
89
90 unsigned length() const { return m_mediaQueries->queryVector().size(); }
91 WEBCORE_EXPORT String item(unsigned index) const;
92 WEBCORE_EXPORT ExceptionOr<void> deleteMedium(const String& oldMedium);
93 WEBCORE_EXPORT void appendMedium(const String& newMedium);
94
95 String mediaText() const { return m_mediaQueries->mediaText(); }
96 WEBCORE_EXPORT ExceptionOr<void> setMediaText(const String&);
97
98 CSSRule* parentRule() const { return m_parentRule; }
99 CSSStyleSheet* parentStyleSheet() const { return m_parentStyleSheet; }
100 void clearParentStyleSheet() { ASSERT(m_parentStyleSheet); m_parentStyleSheet = nullptr; }
101 void clearParentRule() { ASSERT(m_parentRule); m_parentRule = nullptr; }
102 const MediaQuerySet* queries() const { return m_mediaQueries.get(); }
103
104 void reattach(MediaQuerySet*);
105
106private:
107 MediaList();
108 MediaList(MediaQuerySet*, CSSStyleSheet* parentSheet);
109 MediaList(MediaQuerySet*, CSSRule* parentRule);
110
111 RefPtr<MediaQuerySet> m_mediaQueries;
112 CSSStyleSheet* m_parentStyleSheet { nullptr };
113 CSSRule* m_parentRule { nullptr };
114};
115
116// Adds message to inspector console whenever dpi or dpcm values are used for "screen" media.
117// FIXME: Seems strange to have this here in this file, and unclear exactly who should call this and when.
118void reportMediaQueryWarningIfNeeded(Document*, const MediaQuerySet*);
119
120#if !ENABLE(RESOLUTION_MEDIA_QUERY)
121
122inline void reportMediaQueryWarningIfNeeded(Document*, const MediaQuerySet*)
123{
124}
125
126#endif
127
128WTF::TextStream& operator<<(WTF::TextStream&, const MediaQuerySet&);
129WTF::TextStream& operator<<(WTF::TextStream&, const MediaList&);
130
131} // namespace
132