WebCore/CSSValue.h

   1 /*
   2  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
   3  * Copyright (C) 2004, 2005, 2006, 2007, 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 CSSValue_h
  22 #define CSSValue_h
  23
  24 #include "StyleBase.h"
  25
  26 #include "CSSParserValues.h"
  27 #include "KURLHash.h"
  28 #include <wtf/ListHashSet.h>
  29 #include <wtf/RefPtr.h>
  30
  31 namespace WebCore {
  32
  33 class CSSStyleSheet;
  34
  35 typedef int ExceptionCode;
  36
  37 class CSSValue : public RefCounted<CSSValue> {
  38 public:
  39     // FIXME: Change name to Type.
  40     enum UnitTypes {
  41         CSS_INHERIT = 0,
  42         CSS_PRIMITIVE_VALUE = 1,
  43         CSS_VALUE_LIST = 2,
  44         CSS_CUSTOM = 3,
  45         CSS_INITIAL = 4
  46     };
  47
  48     virtual ~CSSValue() { }
  49
  50     // FIXME: Change this to return UnitTypes.
  51     virtual unsigned short cssValueType() const { return CSS_CUSTOM; }
  52
  53     virtual String cssText() const = 0;
  54     void setCssText(const String&, ExceptionCode&) { } // FIXME: Not implemented.
  55
  56     virtual bool isFontValue() const { return false; }
  57     virtual bool isImageGeneratorValue() const { return false; }
  58     virtual bool isImageValue() const { return false; }
  59     virtual bool isImplicitInitialValue() const { return false; }
  60     virtual bool isPrimitiveValue() const { return false; }
  61     virtual bool isTimingFunctionValue() const { return false; }
  62     virtual bool isValueList() const { return false; }
  63     virtual bool isWebKitCSSTransformValue() const { return false; }
  64
  65 #if ENABLE(SVG)
  66     virtual bool isSVGColor() const { return false; }
  67     virtual bool isSVGPaint() const { return false; }
  68 #endif
  69
  70     virtual bool isVariableDependentValue() const { return false; }
  71     virtual CSSParserValue parserValue() const { ASSERT_NOT_REACHED(); return CSSParserValue(); }
  72
  73     virtual void addSubresourceStyleURLs(ListHashSet<KURL>&, const CSSStyleSheet*) { }
  74 };
  75
  76 } // namespace WebCore
  77
  78 #endif // CSSValue_h