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      1 /*
      2  * Copyright (C) 2010 Google 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. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     23  */
     24 
     25 #ifndef ClassList_h
     26 #define ClassList_h
     27 
     28 #include "HTMLNames.h"
     29 #include "core/dom/Element.h"
     30 #include "core/dom/SpaceSplitString.h"
     31 #include "core/html/DOMTokenList.h"
     32 #include "wtf/OwnPtr.h"
     33 #include "wtf/PassOwnPtr.h"
     34 
     35 namespace WebCore {
     36 
     37 class Element;
     38 
     39 typedef int ExceptionCode;
     40 
     41 class ClassList : public DOMTokenList {
     42 public:
     43     static PassOwnPtr<ClassList> create(Element* element)
     44     {
     45         return adoptPtr(new ClassList(element));
     46     }
     47 
     48     virtual void ref() OVERRIDE;
     49     virtual void deref() OVERRIDE;
     50 
     51     virtual unsigned length() const OVERRIDE;
     52     virtual const AtomicString item(unsigned index) const OVERRIDE;
     53 
     54     virtual Element* element() OVERRIDE { return m_element; }
     55 
     56     void clearValueForQuirksMode() { m_classNamesForQuirksMode = nullptr; }
     57 
     58 private:
     59     ClassList(Element*);
     60 
     61     virtual bool containsInternal(const AtomicString&) const OVERRIDE;
     62 
     63     const SpaceSplitString& classNames() const;
     64 
     65     virtual AtomicString value() const OVERRIDE { return m_element->getAttribute(HTMLNames::classAttr); }
     66     virtual void setValue(const AtomicString& value) OVERRIDE { m_element->setAttribute(HTMLNames::classAttr, value); }
     67 
     68     Element* m_element;
     69     mutable OwnPtr<SpaceSplitString> m_classNamesForQuirksMode;
     70 };
     71 
     72 } // namespace WebCore
     73 
     74 #endif // ClassList_h
     75