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      1 /*
      2  * Copyright (C) 2011 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef MutationRecord_h
     32 #define MutationRecord_h
     33 
     34 #include "bindings/v8/ScriptWrappable.h"
     35 #include "platform/heap/Handle.h"
     36 #include "wtf/PassRefPtr.h"
     37 #include "wtf/RefCounted.h"
     38 #include "wtf/text/WTFString.h"
     39 
     40 namespace WebCore {
     41 
     42 class Node;
     43 class QualifiedName;
     44 class StaticNodeList;
     45 
     46 class MutationRecord : public RefCountedWillBeGarbageCollectedFinalized<MutationRecord>, public ScriptWrappable {
     47 public:
     48     static PassRefPtrWillBeRawPtr<MutationRecord> createChildList(PassRefPtrWillBeRawPtr<Node> target, PassRefPtrWillBeRawPtr<StaticNodeList> added, PassRefPtrWillBeRawPtr<StaticNodeList> removed, PassRefPtrWillBeRawPtr<Node> previousSibling, PassRefPtrWillBeRawPtr<Node> nextSibling);
     49     static PassRefPtrWillBeRawPtr<MutationRecord> createAttributes(PassRefPtrWillBeRawPtr<Node> target, const QualifiedName&, const AtomicString& oldValue);
     50     static PassRefPtrWillBeRawPtr<MutationRecord> createCharacterData(PassRefPtrWillBeRawPtr<Node> target, const String& oldValue);
     51     static PassRefPtrWillBeRawPtr<MutationRecord> createWithNullOldValue(PassRefPtrWillBeRawPtr<MutationRecord>);
     52 
     53     MutationRecord()
     54     {
     55         ScriptWrappable::init(this);
     56     }
     57 
     58     virtual ~MutationRecord();
     59 
     60     virtual const AtomicString& type() = 0;
     61     virtual Node* target() = 0;
     62 
     63     virtual StaticNodeList* addedNodes() = 0;
     64     virtual StaticNodeList* removedNodes() = 0;
     65     virtual Node* previousSibling() { return 0; }
     66     virtual Node* nextSibling() { return 0; }
     67 
     68     virtual const AtomicString& attributeName() { return nullAtom; }
     69     virtual const AtomicString& attributeNamespace() { return nullAtom; }
     70 
     71     virtual String oldValue() { return String(); }
     72 
     73     virtual void trace(Visitor*) { }
     74 
     75 };
     76 
     77 } // namespace WebCore
     78 
     79 #endif // MutationRecord_h
     80