text: /*
   * Copyright (C) 2013 Google Inc. All rights reserved.
   * Copyright (C) 2015, 2016 Apple 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:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
   */
  
  #pragma once
  
  #include "ActiveDOMCallback.h"
  #include "QualifiedName.h"
  #include <JavaScriptCore/JSObject.h>
  #include <JavaScriptCore/Weak.h>
  #include <JavaScriptCore/WeakInlines.h>
  #include <wtf/Forward.h>
  #include <wtf/Function.h>
  #include <wtf/RefCounted.h>
  #include <wtf/text/AtomicStringHash.h>
  
  namespace JSC {
  class JSObject;
  class PrivateName;
  }
  
  namespace WebCore {
  
  class DOMWrapperWorld;
  class Document;
  class Element;
  class JSDOMGlobalObject;
  class MathMLElement;
  class SVGElement;
  
  class JSCustomElementInterface : public RefCounted<JSCustomElementInterface>, public ActiveDOMCallback {
  public:
      static Ref<JSCustomElementInterface> create(const QualifiedName& name, JSC::JSObject* callback, JSDOMGlobalObject* globalObject)
      {
          return adoptRef(*new JSCustomElementInterface(name, callback, globalObject));
      }
  
      Ref<Element> constructElementWithFallback(Document&, const AtomicString&);
      Ref<Element> constructElementWithFallback(Document&, const QualifiedName&);
  
      void upgradeElement(Element&);
  
      void setConnectedCallback(JSC::JSObject*);
      bool hasConnectedCallback() const { return !!m_connectedCallback; }
      void invokeConnectedCallback(Element&);
  
      void setDisconnectedCallback(JSC::JSObject*);
      bool hasDisconnectedCallback() const { return !!m_disconnectedCallback; }
      void invokeDisconnectedCallback(Element&);
  
      void setAdoptedCallback(JSC::JSObject*);
      bool hasAdoptedCallback() const { return !!m_adoptedCallback; }
      void invokeAdoptedCallback(Element&, Document& oldDocument, Document& newDocument);
  
      void setAttributeChangedCallback(JSC::JSObject* callback, const Vector<String>& observedAttributes);
      bool observesAttribute(const AtomicString& name) const { return m_observedAttributes.contains(name); }
      void invokeAttributeChangedCallback(Element&, const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue);
  
      ScriptExecutionContext* scriptExecutionContext() const { return ContextDestructionObserver::scriptExecutionContext(); }
      JSC::JSObject* constructor() { return m_constructor.get(); }
  
      const QualifiedName& name() const { return m_name; }
  
      bool isUpgradingElement() const { return !m_constructionStack.isEmpty(); }
      Element* lastElementInConstructionStack() const { return m_constructionStack.last().get(); }
      void didUpgradeLastElementInConstructionStack();
  
      virtual ~JSCustomElementInterface();
  
  private:
      JSCustomElementInterface(const QualifiedName&, JSC::JSObject* callback, JSDOMGlobalObject*);
  
      RefPtr<Element> tryToConstructCustomElement(Document&, const AtomicString&);
  
      void invokeCallback(Element&, JSC::JSObject* callback, const WTF::Function<void(JSC::ExecState*, JSDOMGlobalObject*, JSC::MarkedArgumentBuffer&)>& addArguments = [](JSC::ExecState*, JSDOMGlobalObject*, JSC::MarkedArgumentBuffer&) { });
  
      QualifiedName m_name;
      JSC::Weak<JSC::JSObject> m_constructor;
      JSC::Weak<JSC::JSObject> m_connectedCallback;
      JSC::Weak<JSC::JSObject> m_disconnectedCallback;
      JSC::Weak<JSC::JSObject> m_adoptedCallback;
      JSC::Weak<JSC::JSObject> m_attributeChangedCallback;
      Ref<DOMWrapperWorld> m_isolatedWorld;
      Vector<RefPtr<Element>, 1> m_constructionStack;
      HashSet<AtomicString> m_observedAttributes;
  };
  
  } // namespace WebCore
  