/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_HTMLSlotElement_h

#define mozilla_dom_HTMLSlotElement_h

#include "nsGenericHTMLElement.h"

#include "nsTArray.h"

namespace mozilla {

namespace dom {

struct AssignedNodesOptions;

class HTMLSlotElement final : public nsGenericHTMLElement

{

public:

  explicit HTMLSlotElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);

  NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLSlotElement, slot)

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLSlotElement, nsGenericHTMLElement)

  virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;

  // nsIContent

  virtual nsresult BindToTree(nsIDocument* aDocument,

                              nsIContent* aParent,

                              nsIContent* aBindingParent) override;

  virtual void UnbindFromTree(bool aDeep, bool aNullParent) override;

  virtual nsresult BeforeSetAttr(int32_t aNameSpaceID, nsAtom* aName,

                                 const nsAttrValueOrString* aValue,

                                 bool aNotify) override;

  virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,

                                const nsAttrValue* aValue,

                                const nsAttrValue* aOldValue,

                                nsIPrincipal* aSubjectPrincipal,

                                bool aNotify) override;

  // WebIDL

  void SetName(const nsAString& aName, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::name, aName, aRv);

  }

  void GetName(nsAString& aName)

  {

    GetHTMLAttr(nsGkAtoms::name, aName);

  }

  void AssignedNodes(const AssignedNodesOptions& aOptions,

                     nsTArray<RefPtr<nsINode>>& aNodes);

  // Helper methods

  const nsTArray<RefPtr<nsINode>>& AssignedNodes() const;

  void InsertAssignedNode(uint32_t aIndex, nsINode* aNode);

  void AppendAssignedNode(nsINode* aNode);

  void RemoveAssignedNode(nsINode* aNode);

  void ClearAssignedNodes();

  void EnqueueSlotChangeEvent();

  void RemovedFromSignalSlotList()

  {

    MOZ_ASSERT(mInSignalSlotList);

    mInSignalSlotList = false;

  }

  void FireSlotChangeEvent();

protected:

  virtual ~HTMLSlotElement();

  JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;

  nsTArray<RefPtr<nsINode>> mAssignedNodes;

  // Whether we're in the signal slot list of our unit of related similar-origin

  // browsing contexts.

  //

  // https://dom.spec.whatwg.org/#signal-slot-list

  bool mInSignalSlotList = false;

};

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_HTMLSlotElement_h