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#ifndef MediaList_h 22#define MediaList_h 23 24#include "ExceptionCode.h" 25#include <memory> 26#include <wtf/Forward.h> 27#include <wtf/PassRefPtr.h> 28#include <wtf/RefCounted.h> 29#include <wtf/Vector.h> 30#include <wtf/text/WTFString.h> 31 32namespace WebCore { 33 34class CSSRule; 35class CSSStyleSheet; 36class Document; 37class MediaList; 38class MediaQuery; 39 40class MediaQuerySet : public RefCounted<MediaQuerySet> { 41public: 42 static PassRefPtr<MediaQuerySet> create() 43 { 44 return adoptRef(new MediaQuerySet()); 45 } 46 static PassRefPtr<MediaQuerySet> create(const String& mediaString) 47 { 48 return adoptRef(new MediaQuerySet(mediaString, false)); 49 } 50 static PassRefPtr<MediaQuerySet> createAllowingDescriptionSyntax(const String& mediaString) 51 { 52 return adoptRef(new MediaQuerySet(mediaString, true)); 53 } 54 ~MediaQuerySet(); 55 56 bool parse(const String&); 57 bool add(const String&); 58 bool remove(const String&); 59 60 void addMediaQuery(std::unique_ptr<MediaQuery>); 61 62 const Vector<std::unique_ptr<MediaQuery>>& queryVector() const { return m_queries; } 63 64 int lastLine() const { return m_lastLine; } 65 void setLastLine(int lastLine) { m_lastLine = lastLine; } 66 67 String mediaText() const; 68 69 PassRefPtr<MediaQuerySet> copy() const { return adoptRef(new MediaQuerySet(*this)); } 70 71private: 72 MediaQuerySet(); 73 MediaQuerySet(const String& mediaQuery, bool fallbackToDescription); 74 MediaQuerySet(const MediaQuerySet&); 75 76 unsigned m_fallbackToDescriptor : 1; // true if failed media query parsing should fallback to media description parsing. 77 signed m_lastLine : 31; 78 Vector<std::unique_ptr<MediaQuery>> m_queries; 79}; 80 81class MediaList : public RefCounted<MediaList> { 82public: 83 static PassRefPtr<MediaList> create(MediaQuerySet* mediaQueries, CSSStyleSheet* parentSheet) 84 { 85 return adoptRef(new MediaList(mediaQueries, parentSheet)); 86 } 87 static PassRefPtr<MediaList> create(MediaQuerySet* mediaQueries, CSSRule* parentRule) 88 { 89 return adoptRef(new MediaList(mediaQueries, parentRule)); 90 } 91 92 ~MediaList(); 93 94 unsigned length() const { return m_mediaQueries->queryVector().size(); } 95 String item(unsigned index) const; 96 void deleteMedium(const String& oldMedium, ExceptionCode&); 97 void appendMedium(const String& newMedium, ExceptionCode&); 98 99 String mediaText() const { return m_mediaQueries->mediaText(); } 100 void setMediaText(const String&, ExceptionCode&); 101 102 // Not part of CSSOM. 103 CSSRule* parentRule() const { return m_parentRule; } 104 CSSStyleSheet* parentStyleSheet() const { return m_parentStyleSheet; } 105 void clearParentStyleSheet() { ASSERT(m_parentStyleSheet); m_parentStyleSheet = 0; } 106 void clearParentRule() { ASSERT(m_parentRule); m_parentRule = 0; } 107 const MediaQuerySet* queries() const { return m_mediaQueries.get(); } 108 109 void reattach(MediaQuerySet*); 110 111private: 112 MediaList(); 113 MediaList(MediaQuerySet*, CSSStyleSheet* parentSheet); 114 MediaList(MediaQuerySet*, CSSRule* parentRule); 115 116 RefPtr<MediaQuerySet> m_mediaQueries; 117 CSSStyleSheet* m_parentStyleSheet; 118 CSSRule* m_parentRule; 119}; 120 121#if ENABLE(RESOLUTION_MEDIA_QUERY) 122// Adds message to inspector console whenever dpi or dpcm values are used for "screen" media. 123void reportMediaQueryWarningIfNeeded(Document*, const MediaQuerySet*); 124#endif 125 126} // namespace 127 128#endif 129