WebCore/MediaList.h

   1 /*
   2  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
   3  * Copyright (C) 2004, 2006, 2008 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 "StyleBase.h"
  25 #include <wtf/PassRefPtr.h>
  26 #include <wtf/Vector.h>
  27
  28 namespace WebCore {
  29
  30 class CSSImportRule;
  31 class CSSStyleSheet;
  32 class MediaQuery;
  33 class String;
  34
  35 typedef int ExceptionCode;
  36
  37 class MediaList : public StyleBase {
  38 public:
  39     static PassRefPtr<MediaList> create()
  40     {
  41         return adoptRef(new MediaList(0, false));
  42     }
  43     static PassRefPtr<MediaList> create(CSSImportRule* parentRule, const String& media)
  44     {
  45         return adoptRef(new MediaList(parentRule, media));
  46     }
  47     static PassRefPtr<MediaList> create(CSSStyleSheet* parentSheet, const String& media)
  48     {
  49         return adoptRef(new MediaList(parentSheet, media, false));
  50     }
  51
  52     static PassRefPtr<MediaList> createAllowingDescriptionSyntax(const String& mediaQueryOrDescription)
  53     {
  54         return adoptRef(new MediaList(0, mediaQueryOrDescription, true));
  55     }
  56     static PassRefPtr<MediaList> createAllowingDescriptionSyntax(CSSStyleSheet* parentSheet, const String& mediaQueryOrDescription)
  57     {
  58         return adoptRef(new MediaList(parentSheet, mediaQueryOrDescription, true));
  59     }
  60
  61     static PassRefPtr<MediaList> create(const String& media, bool allowDescriptionSyntax)
  62     {
  63         return adoptRef(new MediaList(0, media, allowDescriptionSyntax));
  64     }
  65
  66     virtual ~MediaList();
  67
  68     unsigned length() const { return m_queries.size(); }
  69     String item(unsigned index) const;
  70     void deleteMedium(const String& oldMedium, ExceptionCode&);
  71     void appendMedium(const String& newMedium, ExceptionCode&);
  72
  73     String mediaText() const;
  74     void setMediaText(const String&, ExceptionCode&xo);
  75
  76     void appendMediaQuery(MediaQuery*);
  77     const Vector<MediaQuery*>& mediaQueries() const { return m_queries; }
  78
  79 private:
  80     MediaList(CSSStyleSheet* parentSheet, bool fallbackToDescription);
  81     MediaList(CSSStyleSheet* parentSheet, const String& media, bool fallbackToDescription);
  82     MediaList(CSSImportRule* parentRule, const String& media);
  83
  84     void notifyChanged();
  85
  86     Vector<MediaQuery*> m_queries;
  87     bool m_fallback; // true if failed media query parsing should fallback to media description parsing
  88 };
  89
  90 } // namespace
  91
  92 #endif