Quelle HTMLAreaElement.cpp Sprache: C

/* -*- 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/BindContext.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/HTMLAnchorElement.h"
#include "mozilla/dom/HTMLAreaElementBinding.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/MemoryReporting.h"
#include "nsWindowSizes.h"

NS_IMPL_NS_NEW_HTML_ELEMENT(Area)

namespace mozilla::dom {

HTMLAreaElement::HTMLAreaElement(
    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
    : nsGenericHTMLElement(std::move(aNodeInfo)), Link(this) {}

HTMLAreaElement::~HTMLAreaElement() = default;

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(nsGkAtoms::target, aValue)) {
    GetBaseTarget(aValue);
  }
}

void HTMLAreaElement::GetEventTargetParent(EventChainPreVisitor& aVisitor) {
  GetEventTargetParentForAnchors(aVisitor);
}

nsresult HTMLAreaElement::PostHandleEvent(EventChainPostVisitor& aVisitor) {
  return PostHandleEventForAnchors(aVisitor);
}

void HTMLAreaElement::GetLinkTargetImpl(nsAString& aTarget) {
  GetAttr(nsGkAtoms::target, aTarget);
  if (aTarget.IsEmpty()) {
    GetBaseTarget(aTarget);
  }
}

nsDOMTokenList* HTMLAreaElement::RelList() {
  if (!mRelList) {
    mRelList =
        new nsDOMTokenList(this, nsGkAtoms::rel, sAnchorAndFormRelValues);
  }
  return mRelList;
}

nsresult HTMLAreaElement::BindToTree(BindContext& aContext, nsINode& aParent) {
  nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
  NS_ENSURE_SUCCESS(rv, rv);

  Link::BindToTree(aContext);
  return rv;
}

void HTMLAreaElement::UnbindFromTree(UnbindContext& aContext) {
  nsGenericHTMLElement::UnbindFromTree(aContext);
  // Without removing the link state we risk a dangling pointer in the
  // mStyledLinks hashtable
  Link::UnbindFromTree();
}

void HTMLAreaElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
                                   const nsAttrValue* aValue,
                                   const nsAttrValue* aOldValue,
                                   nsIPrincipal* aSubjectPrincipal,
                                   bool aNotify) {
  if (aNamespaceID == kNameSpaceID_None && aName == nsGkAtoms::href) {
    Link::ResetLinkState(aNotify, !!aValue);
  }

  return nsGenericHTMLElement::AfterSetAttr(
      aNamespaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
}

already_AddRefed<nsIURI> HTMLAreaElement::GetHrefURI() const {
  if (nsCOMPtr<nsIURI> uri = GetCachedURI()) {
    return uri.forget();
  }
  return GetHrefURIForAnchors();
}

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 mozilla::dom

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