| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef DOMPatchSupport_h |
| #define DOMPatchSupport_h |
| |
| #include "platform/heap/Handle.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/Vector.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| class ContainerNode; |
| class DOMEditor; |
| class Document; |
| class ExceptionState; |
| class Node; |
| |
| class DOMPatchSupport final { |
| STACK_ALLOCATED(); |
| WTF_MAKE_NONCOPYABLE(DOMPatchSupport); |
| |
| public: |
| static void patchDocument(Document&, const String& markup); |
| |
| DOMPatchSupport(DOMEditor*, Document&); |
| |
| void patchDocument(const String& markup); |
| Node* patchNode(Node*, const String& markup, ExceptionState&); |
| |
| private: |
| class Digest : public GarbageCollectedFinalized<Digest> { |
| public: |
| explicit Digest(Node* node) : m_node(node) {} |
| DECLARE_TRACE(); |
| |
| String m_sha1; |
| String m_attrsSHA1; |
| Member<Node> m_node; |
| HeapVector<Member<Digest>> m_children; |
| }; |
| |
| typedef HeapVector<std::pair<Member<Digest>, size_t>> ResultMap; |
| typedef HeapHashMap<String, Member<Digest>> UnusedNodesMap; |
| |
| bool innerPatchNode(Digest* oldNode, Digest* newNode, ExceptionState&); |
| std::pair<ResultMap, ResultMap> diff( |
| const HeapVector<Member<Digest>>& oldChildren, |
| const HeapVector<Member<Digest>>& newChildren); |
| bool innerPatchChildren(ContainerNode*, |
| const HeapVector<Member<Digest>>& oldChildren, |
| const HeapVector<Member<Digest>>& newChildren, |
| ExceptionState&); |
| Digest* createDigest(Node*, UnusedNodesMap*); |
| bool insertBeforeAndMarkAsUsed(ContainerNode*, |
| Digest*, |
| Node* anchor, |
| ExceptionState&); |
| bool removeChildAndMoveToNew(Digest*, ExceptionState&); |
| void markNodeAsUsed(Digest*); |
| #ifdef DEBUG_DOM_PATCH_SUPPORT |
| void dumpMap(const ResultMap&, const String& name); |
| #endif |
| Document& document() const { return *m_document; } |
| |
| Member<DOMEditor> m_domEditor; |
| Member<Document> m_document; |
| |
| UnusedNodesMap m_unusedNodesMap; |
| }; |
| |
| } // namespace blink |
| |
| #endif // !defined(DOMPatchSupport_h) |