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