DOMPatchSupport.h   [plain text]


/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * in the documentation and/or other materials provided with the
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#ifndef DOMPatchSupport_h
#define DOMPatchSupport_h

#include "ExceptionCode.h"

#include <wtf/HashMap.h>
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>

namespace WebCore {

class ContainerNode;
class DOMEditor;
class Document;
class Node;

#if ENABLE(INSPECTOR)

class DOMPatchSupport {
    WTF_MAKE_NONCOPYABLE(DOMPatchSupport);
public:
    static void patchDocument(Document*, const String& markup);

    DOMPatchSupport(DOMEditor*, Document*);
    virtual ~DOMPatchSupport();

    void patchDocument(const String& markup);
    Node* patchNode(Node*, const String& markup, ExceptionCode&);

private:
    struct Digest;
    typedef Vector<pair<Digest*, size_t> > ResultMap;
    typedef HashMap<String, Digest*> UnusedNodesMap;

    bool innerPatchNode(Digest* oldNode, Digest* newNode, ExceptionCode&);
    std::pair<ResultMap, ResultMap> diff(const Vector<OwnPtr<Digest> >& oldChildren, const Vector<OwnPtr<Digest> >& newChildren);
    bool innerPatchChildren(ContainerNode*, const Vector<OwnPtr<Digest> >& oldChildren, const Vector<OwnPtr<Digest> >& newChildren, ExceptionCode&);
    PassOwnPtr<Digest> createDigest(Node*, UnusedNodesMap*);
    bool insertBeforeAndMarkAsUsed(ContainerNode*, Digest*, Node* anchor, ExceptionCode&);
    bool removeChildAndMoveToNew(Digest*, ExceptionCode&);
    void markNodeAsUsed(Digest*);
#ifdef DEBUG_DOM_PATCH_SUPPORT
    void dumpMap(const ResultMap&, const String& name);
#endif

    DOMEditor* m_domEditor;
    Document* m_document;

    UnusedNodesMap m_unusedNodesMap;
};

#endif // ENABLE(INSPECTOR)

} // namespace WebCore

#endif // !defined(DOMPatchSupport_h)