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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 DOMTokenList_h
     26 #define DOMTokenList_h
     27 
     28 #include "bindings/v8/ScriptWrappable.h"
     29 #include "wtf/Vector.h"
     30 #include "wtf/text/AtomicString.h"
     31 
     32 namespace WebCore {
     33 
     34 class Element;
     35 class ExceptionState;
     36 
     37 class DOMTokenList : public ScriptWrappable {
     38     WTF_MAKE_NONCOPYABLE(DOMTokenList); WTF_MAKE_FAST_ALLOCATED;
     39 public:
     40     DOMTokenList()
     41     {
     42         ScriptWrappable::init(this);
     43     }
     44     virtual ~DOMTokenList() {};
     45 
     46     virtual void ref() = 0;
     47     virtual void deref() = 0;
     48 
     49     virtual unsigned length() const = 0;
     50     virtual const AtomicString item(unsigned index) const = 0;
     51 
     52     bool contains(const AtomicString&, ExceptionState&) const;
     53     virtual void add(const Vector<String>&, ExceptionState&);
     54     void add(const AtomicString&, ExceptionState&);
     55     virtual void remove(const Vector<String>&, ExceptionState&);
     56     void remove(const AtomicString&, ExceptionState&);
     57     bool toggle(const AtomicString&, ExceptionState&);
     58     bool toggle(const AtomicString&, bool force, ExceptionState&);
     59 
     60     AtomicString toString() const { return value(); }
     61 
     62     virtual Element* element() { return 0; }
     63 
     64 protected:
     65     virtual AtomicString value() const = 0;
     66     virtual void setValue(const AtomicString&) = 0;
     67 
     68     virtual void addInternal(const AtomicString&);
     69     virtual bool containsInternal(const AtomicString&) const = 0;
     70     virtual void removeInternal(const AtomicString&);
     71 
     72     static bool validateToken(const AtomicString&, ExceptionState&);
     73     static bool validateTokens(const Vector<String>&, ExceptionState&);
     74     static String addToken(const AtomicString&, const AtomicString&);
     75     static String addTokens(const AtomicString&, const Vector<String>&);
     76     static String removeToken(const AtomicString&, const AtomicString&);
     77     static String removeTokens(const AtomicString&, const Vector<String>&);
     78 };
     79 
     80 } // namespace WebCore
     81 
     82 #endif // DOMTokenList_h
     83