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      1 /*
      2  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef CSSVariablesDeclaration_h
     27 #define CSSVariablesDeclaration_h
     28 
     29 #include "PlatformString.h"
     30 #include "StringHash.h"
     31 #include "StyleBase.h"
     32 #include <wtf/HashMap.h>
     33 #include <wtf/RefPtr.h>
     34 #include <wtf/Vector.h>
     35 
     36 namespace WebCore {
     37 
     38 typedef int ExceptionCode;
     39 
     40 class CSSMutableStyleDeclaration;
     41 class CSSRule;
     42 class CSSValue;
     43 class CSSValueList;
     44 
     45 class CSSVariablesDeclaration : public StyleBase {
     46 public:
     47     static PassRefPtr<CSSVariablesDeclaration> create(StyleBase* owningRule, const Vector<String>& names, const Vector<RefPtr<CSSValue> >& values)
     48     {
     49         return adoptRef(new CSSVariablesDeclaration(owningRule, names, values));
     50     }
     51     virtual ~CSSVariablesDeclaration();
     52 
     53     String getVariableValue(const String&);
     54     String removeVariable(const String&, ExceptionCode&);
     55     void setVariable(const String&, const String&, ExceptionCode&);
     56 
     57     unsigned length() const;
     58     String item(unsigned index);
     59 
     60     CSSRule* parentRule();
     61 
     62     String cssText() const;
     63     void setCssText(const String&); // FIXME: The spec contradicts itself regarding whether or not cssText is settable.
     64 
     65     void addParsedVariable(const String& variableName, PassRefPtr<CSSValue> variableValue, bool updateNamesList = true);
     66 
     67     CSSValueList* getParsedVariable(const String& variableName);
     68     CSSMutableStyleDeclaration* getParsedVariableDeclarationBlock(const String& variableName);
     69 
     70 private:
     71     CSSVariablesDeclaration(StyleBase* owningRule, const Vector<String>& names, const Vector<RefPtr<CSSValue> >& values);
     72 
     73     void setNeedsStyleRecalc();
     74 
     75 protected:
     76     Vector<String> m_variableNames;
     77     HashMap<String, RefPtr<CSSValue> > m_variablesMap;
     78 };
     79 
     80 } // namespace WebCore
     81 
     82 #endif // CSSVariablesDeclaration_h
     83