third_party/WebKit/Source/core/dom/custom/V0CustomElementUpgradeCandidateMap.h

/*
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#ifndef V0CustomElementUpgradeCandidateMap_h
#define V0CustomElementUpgradeCandidateMap_h

#include "core/dom/custom/V0CustomElementDescriptor.h"
#include "core/dom/custom/V0CustomElementDescriptorHash.h"
#include "core/dom/custom/V0CustomElementObserver.h"
#include "wtf/HashMap.h"
#include "wtf/LinkedHashSet.h"
#include "wtf/Noncopyable.h"

namespace blink {

class V0CustomElementUpgradeCandidateMap final : public V0CustomElementObserver {
    WTF_MAKE_NONCOPYABLE(V0CustomElementUpgradeCandidateMap);
public:
    static V0CustomElementUpgradeCandidateMap* create();
    ~V0CustomElementUpgradeCandidateMap() override;

    // API for V0CustomElementRegistrationContext to save and take candidates

    typedef HeapLinkedHashSet<WeakMember<Element>> ElementSet;

    void add(const V0CustomElementDescriptor&, Element*);
    ElementSet* takeUpgradeCandidatesFor(const V0CustomElementDescriptor&);

    DECLARE_VIRTUAL_TRACE();

private:
    V0CustomElementUpgradeCandidateMap() { }

    void elementWasDestroyed(Element*) override;

    typedef HeapHashMap<WeakMember<Element>, V0CustomElementDescriptor> UpgradeCandidateMap;
    UpgradeCandidateMap m_upgradeCandidates;

    typedef HeapHashMap<V0CustomElementDescriptor, Member<ElementSet>> UnresolvedDefinitionMap;
    UnresolvedDefinitionMap m_unresolvedDefinitions;
};

} // namespace blink

#endif // V0CustomElementUpgradeCandidateMap_h