/* -*- 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_SVGSwitchElement_h

#define mozilla_dom_SVGSwitchElement_h

#include "mozilla/dom/SVGGraphicsElement.h"

class nsSVGSwitchFrame;

nsresult NS_NewSVGSwitchElement(nsIContent **aResult,

                                already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);

namespace mozilla {

namespace dom {

typedef SVGGraphicsElement SVGSwitchElementBase;

class SVGSwitchElement final : public SVGSwitchElementBase

{

  friend class ::nsSVGSwitchFrame;

protected:

  friend nsresult (::NS_NewSVGSwitchElement(nsIContent **aResult,

                                            already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));

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

  ~SVGSwitchElement();

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

public:

  nsIContent * GetActiveChild() const

  { return mActiveChild; }

  void MaybeInvalidate();

  // interfaces:

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGSwitchElement,

                                           SVGSwitchElementBase)

  // nsINode

  virtual nsresult InsertChildBefore(nsIContent* aKid, nsIContent* aBeforeThis,

                                     bool aNotify) override;

  virtual void RemoveChildNode(nsIContent* aKid, bool aNotify) override;

  // nsIContent

  NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;

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

private:

  void UpdateActiveChild()

  { mActiveChild = FindActiveChild(); }

  nsIContent* FindActiveChild() const;

  // only this child will be displayed

  nsCOMPtr<nsIContent> mActiveChild;

};

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_SVGSwitchElement_h