/* -*- 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/. */

#include "mozilla/dom/HTMLAreaElement.h"

#include "mozilla/Attributes.h"

#include "mozilla/dom/HTMLAnchorElement.h"

#include "mozilla/dom/HTMLAreaElementBinding.h"

#include "mozilla/EventDispatcher.h"

#include "mozilla/EventStates.h"

#include "mozilla/MemoryReporting.h"

#include "nsWindowSizes.h"

NS_IMPL_NS_NEW_HTML_ELEMENT(Area)

namespace mozilla {

namespace dom {

HTMLAreaElement::HTMLAreaElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)

  : nsGenericHTMLElement(std::move(aNodeInfo))

  , Link(this)

{

}

HTMLAreaElement::~HTMLAreaElement()

{

}

NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLAreaElement,

                                             nsGenericHTMLElement,

                                             Link)

NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLAreaElement,

                                   nsGenericHTMLElement,

                                   mRelList)

NS_IMPL_ELEMENT_CLONE(HTMLAreaElement)

int32_t

HTMLAreaElement::TabIndexDefault()

{

  return 0;

}

void

HTMLAreaElement::GetTarget(DOMString& aValue)

{

  if (!GetAttr(kNameSpaceID_None, nsGkAtoms::target, aValue)) {

    GetBaseTarget(aValue);

  }

}

void

HTMLAreaElement::GetEventTargetParent(EventChainPreVisitor& aVisitor)

{

  GetEventTargetParentForAnchors(aVisitor);

}

nsresult

HTMLAreaElement::PostHandleEvent(EventChainPostVisitor& aVisitor)

{

  return PostHandleEventForAnchors(aVisitor);

}

bool

HTMLAreaElement::IsLink(nsIURI** aURI) const

{

  return IsHTMLLink(aURI);

}

void

HTMLAreaElement::GetLinkTarget(nsAString& aTarget)

{

  GetAttr(kNameSpaceID_None, nsGkAtoms::target, aTarget);

  if (aTarget.IsEmpty()) {

    GetBaseTarget(aTarget);

  }

}

nsDOMTokenList*

HTMLAreaElement::RelList()

{

  if (!mRelList) {

    mRelList = new nsDOMTokenList(this, nsGkAtoms::rel,

                                  HTMLAnchorElement::sSupportedRelValues);

  }

  return mRelList;

}

nsresult

HTMLAreaElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,

                            nsIContent* aBindingParent)

{

  Link::ResetLinkState(false, Link::ElementHasHref());

  nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,

                                                 aBindingParent);

  NS_ENSURE_SUCCESS(rv, rv);

  nsIDocument* doc = GetComposedDoc();

  if (doc) {

    doc->RegisterPendingLinkUpdate(this);

  }

  return rv;

}

void

HTMLAreaElement::UnbindFromTree(bool aDeep, bool aNullParent)

{

  // If this link is ever reinserted into a document, it might

  // be under a different xml:base, so forget the cached state now.

  Link::ResetLinkState(false, Link::ElementHasHref());

  nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);

}

nsresult

HTMLAreaElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,

                              const nsAttrValue* aValue,

                              const nsAttrValue* aOldValue,

                              nsIPrincipal* aSubjectPrincipal,

                              bool aNotify)

{

  if (aNamespaceID == kNameSpaceID_None) {

    // This must happen after the attribute is set. We will need the updated

    // attribute value because notifying the document that content states have

    // changed will call IntrinsicState, which will try to get updated

    // information about the visitedness from Link.

    if (aName == nsGkAtoms::href) {

      Link::ResetLinkState(aNotify, !!aValue);

    }

  }

  return nsGenericHTMLElement::AfterSetAttr(aNamespaceID, aName, aValue,

                                            aOldValue, aSubjectPrincipal, aNotify);

}

void

HTMLAreaElement::ToString(nsAString& aSource)

{

  GetHref(aSource);

}

already_AddRefed<nsIURI>

HTMLAreaElement::GetHrefURI() const

{

  return GetHrefURIForAnchors();

}

EventStates

HTMLAreaElement::IntrinsicState() const

{

  return Link::LinkState() | nsGenericHTMLElement::IntrinsicState();

}

void

HTMLAreaElement::AddSizeOfExcludingThis(nsWindowSizes& aSizes,

                                        size_t* aNodeSize) const

{

  nsGenericHTMLElement::AddSizeOfExcludingThis(aSizes, aNodeSize);

  *aNodeSize += Link::SizeOfExcludingThis(aSizes.mState);

}

JSObject*

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

{

  return HTMLAreaElement_Binding::Wrap(aCx, this, aGivenProto);

}

} // namespace dom

} // namespace mozilla