1/* 2 * Copyright (C) 2012 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 DOMPatchSupport_h 32#define DOMPatchSupport_h 33 34#include "platform/heap/Handle.h" 35#include "wtf/HashMap.h" 36#include "wtf/OwnPtr.h" 37#include "wtf/PassOwnPtr.h" 38#include "wtf/Vector.h" 39#include "wtf/text/WTFString.h" 40 41namespace blink { 42 43class ContainerNode; 44class DOMEditor; 45class Document; 46class ExceptionState; 47class Node; 48 49class DOMPatchSupport FINAL { 50 STACK_ALLOCATED(); 51 WTF_MAKE_NONCOPYABLE(DOMPatchSupport); 52public: 53 static void patchDocument(Document&, const String& markup); 54 55 DOMPatchSupport(DOMEditor*, Document&); 56 57 void patchDocument(const String& markup); 58 Node* patchNode(Node*, const String& markup, ExceptionState&); 59 60private: 61 struct Digest; 62 typedef Vector<pair<Digest*, size_t> > ResultMap; 63 typedef HashMap<String, Digest*> UnusedNodesMap; 64 65 bool innerPatchNode(Digest* oldNode, Digest* newNode, ExceptionState&); 66 std::pair<ResultMap, ResultMap> diff(const Vector<OwnPtr<Digest> >& oldChildren, const Vector<OwnPtr<Digest> >& newChildren); 67 bool innerPatchChildren(ContainerNode*, const Vector<OwnPtr<Digest> >& oldChildren, const Vector<OwnPtr<Digest> >& newChildren, ExceptionState&); 68 PassOwnPtr<Digest> createDigest(Node*, UnusedNodesMap*); 69 bool insertBeforeAndMarkAsUsed(ContainerNode*, Digest*, Node* anchor, ExceptionState&); 70 bool removeChildAndMoveToNew(Digest*, ExceptionState&); 71 void markNodeAsUsed(Digest*); 72#ifdef DEBUG_DOM_PATCH_SUPPORT 73 void dumpMap(const ResultMap&, const String& name); 74#endif 75 Document& document() const { return *m_document; } 76 77 RawPtrWillBeMember<DOMEditor> m_domEditor; 78 RawPtrWillBeMember<Document> m_document; 79 80 UnusedNodesMap m_unusedNodesMap; 81}; 82 83 84} // namespace blink 85 86#endif // !defined(DOMPatchSupport_h) 87