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      1 /*
      2  * (C) 1999-2003 Lars Knoll (knoll (at) kde.org)
      3  * (C) 2002-2003 Dirk Mueller (mueller (at) kde.org)
      4  * Copyright (C) 2002, 2006, 2007 Apple Inc. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  */
     21 
     22 #ifndef CSSRule_h
     23 #define CSSRule_h
     24 
     25 #include "CSSStyleSheet.h"
     26 #include "KURLHash.h"
     27 #include <wtf/ListHashSet.h>
     28 
     29 namespace WebCore {
     30 
     31 typedef int ExceptionCode;
     32 
     33 class CSSRule : public StyleBase {
     34 public:
     35     // FIXME: Change name to Type.
     36     enum CSSRuleType {
     37         UNKNOWN_RULE,
     38         STYLE_RULE,
     39         CHARSET_RULE,
     40         IMPORT_RULE,
     41         MEDIA_RULE,
     42         FONT_FACE_RULE,
     43         PAGE_RULE,
     44         VARIABLES_RULE,
     45         WEBKIT_KEYFRAMES_RULE,
     46         WEBKIT_KEYFRAME_RULE
     47     };
     48 
     49     // FIXME: Change to return CSSRuleType.
     50     virtual unsigned short type() const = 0;
     51 
     52     CSSStyleSheet* parentStyleSheet() const;
     53     CSSRule* parentRule() const;
     54 
     55     virtual String cssText() const = 0;
     56     void setCssText(const String&, ExceptionCode&);
     57 
     58     virtual void addSubresourceStyleURLs(ListHashSet<KURL>&) { }
     59 
     60 protected:
     61     CSSRule(CSSStyleSheet* parent)
     62         : StyleBase(parent)
     63     {
     64     }
     65 
     66 private:
     67     virtual bool isRule() { return true; }
     68 };
     69 
     70 } // namespace WebCore
     71 
     72 #endif // CSSRule_h
     73