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 "bindings/core/v8/ScriptWrappable.h" 25 #include "core/dom/ExceptionCode.h" 26 #include "platform/heap/Handle.h" 27 #include "wtf/Forward.h" 28 #include "wtf/PassRefPtr.h" 29 #include "wtf/RefCounted.h" 30 #include "wtf/Vector.h" 31 #include "wtf/text/WTFString.h" 32 33 namespace blink { 34 35 class CSSRule; 36 class CSSStyleSheet; 37 class Document; 38 class ExceptionState; 39 class MediaList; 40 class MediaQuery; 41 42 class MediaQuerySet : public RefCountedWillBeGarbageCollected<MediaQuerySet> { 43 DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(MediaQuerySet); 44 public: create()45 static PassRefPtrWillBeRawPtr<MediaQuerySet> create() 46 { 47 return adoptRefWillBeNoop(new MediaQuerySet()); 48 } 49 static PassRefPtrWillBeRawPtr<MediaQuerySet> create(const String& mediaString); 50 static PassRefPtrWillBeRawPtr<MediaQuerySet> createOffMainThread(const String& mediaString); 51 52 bool set(const String&); 53 bool add(const String&); 54 bool remove(const String&); 55 56 void addMediaQuery(PassOwnPtrWillBeRawPtr<MediaQuery>); 57 queryVector()58 const WillBeHeapVector<OwnPtrWillBeMember<MediaQuery> >& queryVector() const { return m_queries; } 59 60 String mediaText() const; 61 copy()62 PassRefPtrWillBeRawPtr<MediaQuerySet> copy() const { return adoptRefWillBeNoop(new MediaQuerySet(*this)); } 63 64 void trace(Visitor*); 65 66 private: 67 MediaQuerySet(); 68 MediaQuerySet(const MediaQuerySet&); 69 70 WillBeHeapVector<OwnPtrWillBeMember<MediaQuery> > m_queries; 71 }; 72 73 class MediaList : public RefCountedWillBeGarbageCollectedFinalized<MediaList>, public ScriptWrappable { 74 DEFINE_WRAPPERTYPEINFO(); 75 public: create(MediaQuerySet * mediaQueries,CSSStyleSheet * parentSheet)76 static PassRefPtrWillBeRawPtr<MediaList> create(MediaQuerySet* mediaQueries, CSSStyleSheet* parentSheet) 77 { 78 return adoptRefWillBeNoop(new MediaList(mediaQueries, parentSheet)); 79 } create(MediaQuerySet * mediaQueries,CSSRule * parentRule)80 static PassRefPtrWillBeRawPtr<MediaList> create(MediaQuerySet* mediaQueries, CSSRule* parentRule) 81 { 82 return adoptRefWillBeNoop(new MediaList(mediaQueries, parentRule)); 83 } 84 85 ~MediaList(); 86 length()87 unsigned length() const { return m_mediaQueries->queryVector().size(); } 88 String item(unsigned index) const; 89 void deleteMedium(const String& oldMedium, ExceptionState&); 90 void appendMedium(const String& newMedium, ExceptionState&); 91 mediaText()92 String mediaText() const { return m_mediaQueries->mediaText(); } 93 void setMediaText(const String&); 94 95 // Not part of CSSOM. parentRule()96 CSSRule* parentRule() const { return m_parentRule; } parentStyleSheet()97 CSSStyleSheet* parentStyleSheet() const { return m_parentStyleSheet; } 98 99 #if !ENABLE(OILPAN) clearParentStyleSheet()100 void clearParentStyleSheet() { ASSERT(m_parentStyleSheet); m_parentStyleSheet = nullptr; } clearParentRule()101 void clearParentRule() { ASSERT(m_parentRule); m_parentRule = nullptr; } 102 #endif 103 queries()104 const MediaQuerySet* queries() const { return m_mediaQueries.get(); } 105 106 void reattach(MediaQuerySet*); 107 108 void trace(Visitor*); 109 110 private: 111 MediaList(MediaQuerySet*, CSSStyleSheet* parentSheet); 112 MediaList(MediaQuerySet*, CSSRule* parentRule); 113 114 RefPtrWillBeMember<MediaQuerySet> m_mediaQueries; 115 // Cleared in ~CSSStyleSheet destructor when oilpan is not enabled. 116 RawPtrWillBeMember<CSSStyleSheet> m_parentStyleSheet; 117 // Cleared in the ~CSSMediaRule and ~CSSImportRule destructors when oilpan is not enabled. 118 RawPtrWillBeMember<CSSRule> m_parentRule; 119 }; 120 121 // Adds message to inspector console whenever dpi or dpcm values are used for "screen" media. 122 void reportMediaQueryWarningIfNeeded(Document*, const MediaQuerySet*); 123 124 } // namespace blink 125 126 #endif 127