Source/core/dom/CustomElementRegistry.h

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions
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 *    in the documentation and/or other materials provided with the
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 *    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
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#ifndef CustomElementRegistry_h
#define CustomElementRegistry_h

#include "core/dom/ContextLifecycleObserver.h"
#include "core/dom/CustomElementUpgradeCandidateMap.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/QualifiedName.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
#include "wtf/text/AtomicString.h"
#include "wtf/text/AtomicStringHash.h"

namespace WebCore {

class CustomElementConstructorBuilder;
class CustomElementDefinition;
class Document;
class Element;

void setTypeExtension(Element*, const AtomicString& typeExtension);

class CustomElementRegistry : public RefCounted<CustomElementRegistry>, public ContextLifecycleObserver {
    WTF_MAKE_NONCOPYABLE(CustomElementRegistry); WTF_MAKE_FAST_ALLOCATED;
public:
    explicit CustomElementRegistry(Document*);
    virtual ~CustomElementRegistry() { }

    void registerElement(CustomElementConstructorBuilder*, const AtomicString& name, ExceptionCode&);

    bool isUnresolved(Element*) const;
    PassRefPtr<CustomElementDefinition> findFor(Element*) const;

    PassRefPtr<Element> createCustomTagElement(const QualifiedName& localName);

    Document* document() const;

    void didGiveTypeExtension(Element*, const AtomicString&);
    void customElementWasDestroyed(Element*);

    static bool isCustomTagName(const AtomicString& name) { return isValidName(name); }

private:
    typedef HashMap<AtomicString, RefPtr<CustomElementDefinition> > DefinitionMap;
    static bool isValidName(const AtomicString&);

    PassRefPtr<CustomElementDefinition> findAndCheckNamespace(const AtomicString& type, const AtomicString& namespaceURI) const;

    void didCreateCustomTagElement(CustomElementDefinition*, Element*);
    void didCreateUnresolvedElement(CustomElementDefinition::CustomElementKind, const AtomicString& type, Element*);

    DefinitionMap m_definitions;
    CustomElementUpgradeCandidateMap m_candidates;
};

} // namespace WebCore

#endif