/* -*- 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_HTMLLinkElement_h

#define mozilla_dom_HTMLLinkElement_h

#include "mozilla/Attributes.h"

#include "mozilla/dom/Link.h"

#include "nsGenericHTMLElement.h"

#include "nsStyleLinkElement.h"

namespace mozilla {

class EventChainPostVisitor;

class EventChainPreVisitor;

namespace dom {

class HTMLLinkElement final : public nsGenericHTMLElement,

                              public nsStyleLinkElement,

                              public Link

{

public:

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

  // nsISupports

  NS_DECL_ISUPPORTS_INHERITED

  // CC

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLLinkElement,

                                           nsGenericHTMLElement)

  NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLLinkElement, link);

  NS_DECL_ADDSIZEOFEXCLUDINGTHIS

  void LinkAdded();

  void LinkRemoved();

  // EventTarget

  void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;

  virtual nsresult PostHandleEvent(

                     EventChainPostVisitor& aVisitor) override;

  // nsINode

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

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

  // nsIContent

  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,

                              nsIContent* aBindingParent) override;

  virtual void UnbindFromTree(bool aDeep = true,

                              bool aNullParent = true) 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;

  virtual bool IsLink(nsIURI** aURI) const override;

  virtual already_AddRefed<nsIURI> GetHrefURI() const override;

  // Element

  virtual bool ParseAttribute(int32_t aNamespaceID,

                              nsAtom* aAttribute,

                              const nsAString& aValue,

                              nsIPrincipal* aMaybeScriptedPrincipal,

                              nsAttrValue& aResult) override;

  virtual void GetLinkTarget(nsAString& aTarget) override;

  virtual EventStates IntrinsicState() const override;

  void CreateAndDispatchEvent(nsIDocument* aDoc, const nsAString& aEventName);

  virtual void OnDNSPrefetchDeferred() override;

  virtual void OnDNSPrefetchRequested() override;

  virtual bool HasDeferredDNSPrefetchRequest() override;

  // WebIDL

  bool Disabled();

  void SetDisabled(bool aDisabled);

  void GetHref(nsAString& aValue)

  {

    GetURIAttr(nsGkAtoms::href, nullptr, aValue);

  }

  void SetHref(const nsAString& aHref, nsIPrincipal* aTriggeringPrincipal, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::href, aHref, aTriggeringPrincipal, aRv);

  }

  void SetHref(const nsAString& aHref, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::href, aHref, aRv);

  }

  void GetCrossOrigin(nsAString& aResult)

  {

    // Null for both missing and invalid defaults is ok, since we

    // always parse to an enum value, so we don't need an invalid

    // default, and we _want_ the missing default to be null.

    GetEnumAttr(nsGkAtoms::crossorigin, nullptr, aResult);

  }

  void SetCrossOrigin(const nsAString& aCrossOrigin, ErrorResult& aError)

  {

    SetOrRemoveNullableStringAttr(nsGkAtoms::crossorigin, aCrossOrigin, aError);

  }

  // nsAString for WebBrowserPersistLocalDocument

  void GetRel(nsAString& aValue)

  {

    GetHTMLAttr(nsGkAtoms::rel, aValue);

  }

  void SetRel(const nsAString& aRel, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::rel, aRel, aRv);

  }

  nsDOMTokenList* RelList();

  void GetMedia(DOMString& aValue)

  {

    GetHTMLAttr(nsGkAtoms::media, aValue);

  }

  void SetMedia(const nsAString& aMedia, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::media, aMedia, aRv);

  }

  void GetHreflang(DOMString& aValue)

  {

    GetHTMLAttr(nsGkAtoms::hreflang, aValue);

  }

  void SetHreflang(const nsAString& aHreflang, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::hreflang, aHreflang, aRv);

  }

  void GetAs(nsAString& aResult);

  void SetAs(const nsAString& aAs, ErrorResult& aRv)

  {

    SetAttr(nsGkAtoms::as ,aAs, aRv);

  }

  nsDOMTokenList* Sizes()

  {

    return GetTokenList(nsGkAtoms::sizes);

  }

  void GetType(DOMString& aValue)

  {

    GetHTMLAttr(nsGkAtoms::type, aValue);

  }

  void SetType(const nsAString& aType, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::type, aType, aRv);

  }

  void GetCharset(nsAString& aValue) override

  {

    GetHTMLAttr(nsGkAtoms::charset, aValue);

  }

  void SetCharset(const nsAString& aCharset, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::charset, aCharset, aRv);

  }

  void GetRev(DOMString& aValue)

  {

    GetHTMLAttr(nsGkAtoms::rev, aValue);

  }

  void SetRev(const nsAString& aRev, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::rev, aRev, aRv);

  }

  void GetTarget(DOMString& aValue)

  {

    GetHTMLAttr(nsGkAtoms::target, aValue);

  }

  void SetTarget(const nsAString& aTarget, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::target, aTarget, aRv);

  }

  void GetIntegrity(nsAString& aIntegrity) const

  {

    GetHTMLAttr(nsGkAtoms::integrity, aIntegrity);

  }

  void SetIntegrity(const nsAString& aIntegrity, ErrorResult& aRv)

  {

    SetHTMLAttr(nsGkAtoms::integrity, aIntegrity, aRv);

  }

  void SetReferrerPolicy(const nsAString& aReferrer, ErrorResult& aError)

  {

    SetHTMLAttr(nsGkAtoms::referrerpolicy, aReferrer, aError);

  }

  void GetReferrerPolicy(nsAString& aReferrer)

  {

    GetEnumAttr(nsGkAtoms::referrerpolicy, EmptyCString().get(), aReferrer);

  }

  CORSMode GetCORSMode() const

  {

    return AttrValueToCORSMode(GetParsedAttr(nsGkAtoms::crossorigin));

  }

  void NodeInfoChanged(nsIDocument* aOldDoc) final

  {

    ClearHasPendingLinkUpdate();

    nsGenericHTMLElement::NodeInfoChanged(aOldDoc);

  }

  static bool CheckPreloadAttrs(const nsAttrValue& aAs, const nsAString& aType,

                                const nsAString& aMedia, nsIDocument* aDocument);

protected:

  virtual ~HTMLLinkElement();

  // nsStyleLinkElement

  Maybe<SheetInfo> GetStyleSheetInfo() final;

protected:

  RefPtr<nsDOMTokenList> mRelList;

};

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_HTMLLinkElement_h