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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 #include "config.h"
     26 #include "DOMSettableTokenList.h"
     27 
     28 namespace WebCore {
     29 
     30 DOMSettableTokenList::DOMSettableTokenList()
     31     : m_value()
     32     , m_tokens()
     33 {
     34 }
     35 
     36 DOMSettableTokenList::~DOMSettableTokenList()
     37 {
     38 }
     39 
     40 const AtomicString DOMSettableTokenList::item(unsigned index) const
     41 {
     42     if (index >= length())
     43         return AtomicString();
     44     return m_tokens[index];
     45 }
     46 
     47 bool DOMSettableTokenList::contains(const AtomicString& token, ExceptionCode& ec) const
     48 {
     49     if (!validateToken(token, ec))
     50         return false;
     51     return m_tokens.contains(token);
     52 }
     53 
     54 void DOMSettableTokenList::add(const AtomicString& token, ExceptionCode& ec)
     55 {
     56     if (!validateToken(token, ec) || m_tokens.contains(token))
     57         return;
     58     addInternal(token);
     59 }
     60 
     61 void DOMSettableTokenList::addInternal(const AtomicString& token)
     62 {
     63     m_value = addToken(m_value, token);
     64     if (m_tokens.isNull())
     65         m_tokens.set(token, false);
     66     else
     67         m_tokens.add(token);
     68 }
     69 
     70 void DOMSettableTokenList::remove(const AtomicString& token, ExceptionCode& ec)
     71 {
     72     if (!validateToken(token, ec) || !m_tokens.contains(token))
     73         return;
     74     removeInternal(token);
     75 }
     76 
     77 void DOMSettableTokenList::removeInternal(const AtomicString& token)
     78 {
     79     m_value = removeToken(m_value, token);
     80     m_tokens.remove(token);
     81 }
     82 
     83 bool DOMSettableTokenList::toggle(const AtomicString& token, ExceptionCode& ec)
     84 {
     85     if (!validateToken(token, ec))
     86         return false;
     87     if (m_tokens.contains(token)) {
     88         removeInternal(token);
     89         return false;
     90     }
     91     addInternal(token);
     92     return true;
     93 }
     94 
     95 void DOMSettableTokenList::setValue(const String& value)
     96 {
     97     m_value = value;
     98     m_tokens.set(value, false);
     99 }
    100 
    101 } // namespace WebCore
    102