1 files changed, 334 insertions, 0 deletions
diff --git a/dom/svg/SVGAElement.cpp b/dom/svg/SVGAElement.cpp
new file mode 100644
index 0000000000..611f33c2f9
--- /dev/null
+++ b/dom/svg/SVGAElement.cpp
@@ -0,0 +1,334 @@
+/* -*- 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/SVGAElement.h"
+
+#include "mozilla/Attributes.h"
+#include "mozilla/EventDispatcher.h"
+#include "mozilla/EventStates.h"
+#include "mozilla/dom/BindContext.h"
+#include "mozilla/dom/DocumentInlines.h"
+#include "mozilla/dom/SVGAElementBinding.h"
+#include "nsCOMPtr.h"
+#include "nsContentUtils.h"
+#include "nsGkAtoms.h"
+#include "nsIContentInlines.h"
+#include "nsIURI.h"
+
+NS_IMPL_NS_NEW_SVG_ELEMENT(A)
+
+namespace mozilla {
+namespace dom {
+
+JSObject* SVGAElement::WrapNode(JSContext* aCx,
+                                JS::Handle<JSObject*> aGivenProto) {
+  return SVGAElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+SVGElement::StringInfo SVGAElement::sStringInfo[3] = {
+    {nsGkAtoms::href, kNameSpaceID_None, true},
+    {nsGkAtoms::href, kNameSpaceID_XLink, true},
+    {nsGkAtoms::target, kNameSpaceID_None, true}};
+
+// static
+const DOMTokenListSupportedToken SVGAElement::sSupportedRelValues[] = {
+    "noreferrer", "noopener", nullptr};
+
+//----------------------------------------------------------------------
+// nsISupports methods
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SVGAElement)
+  NS_INTERFACE_MAP_ENTRY(Link)
+NS_INTERFACE_MAP_END_INHERITING(SVGAElementBase)
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(SVGAElement, SVGAElementBase, mRelList)
+
+NS_IMPL_ADDREF_INHERITED(SVGAElement, SVGAElementBase)
+NS_IMPL_RELEASE_INHERITED(SVGAElement, SVGAElementBase)
+
+//----------------------------------------------------------------------
+// Implementation
+
+SVGAElement::SVGAElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+    : SVGAElementBase(std::move(aNodeInfo)), Link(this) {}
+
+already_AddRefed<DOMSVGAnimatedString> SVGAElement::Href() {
+  return mStringAttributes[HREF].IsExplicitlySet()
+             ? mStringAttributes[HREF].ToDOMAnimatedString(this)
+             : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
+}
+
+//----------------------------------------------------------------------
+// Link methods
+
+bool SVGAElement::ElementHasHref() const {
+  return mStringAttributes[HREF].IsExplicitlySet() ||
+         mStringAttributes[XLINK_HREF].IsExplicitlySet();
+}
+
+//----------------------------------------------------------------------
+// nsINode methods
+
+void SVGAElement::GetEventTargetParent(EventChainPreVisitor& aVisitor) {
+  Element::GetEventTargetParent(aVisitor);
+
+  GetEventTargetParentForLinks(aVisitor);
+}
+
+nsresult SVGAElement::PostHandleEvent(EventChainPostVisitor& aVisitor) {
+  return PostHandleEventForLinks(aVisitor);
+}
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGAElement)
+
+//----------------------------------------------------------------------
+
+already_AddRefed<DOMSVGAnimatedString> SVGAElement::Target() {
+  return mStringAttributes[TARGET].ToDOMAnimatedString(this);
+}
+
+void SVGAElement::GetDownload(nsAString& aDownload) {
+  GetAttr(nsGkAtoms::download, aDownload);
+}
+
+void SVGAElement::SetDownload(const nsAString& aDownload, ErrorResult& rv) {
+  SetAttr(nsGkAtoms::download, aDownload, rv);
+}
+
+void SVGAElement::GetPing(nsAString& aPing) { GetAttr(nsGkAtoms::ping, aPing); }
+
+void SVGAElement::SetPing(const nsAString& aPing, ErrorResult& rv) {
+  SetAttr(nsGkAtoms::ping, aPing, rv);
+}
+
+void SVGAElement::GetRel(nsAString& aRel) { GetAttr(nsGkAtoms::rel, aRel); }
+
+void SVGAElement::SetRel(const nsAString& aRel, ErrorResult& rv) {
+  SetAttr(nsGkAtoms::rel, aRel, rv);
+}
+
+void SVGAElement::GetReferrerPolicy(nsAString& aPolicy) {
+  GetEnumAttr(nsGkAtoms::referrerpolicy, "", aPolicy);
+}
+
+void SVGAElement::SetReferrerPolicy(const nsAString& aPolicy,
+                                    mozilla::ErrorResult& rv) {
+  SetAttr(nsGkAtoms::referrerpolicy, aPolicy, rv);
+}
+
+nsDOMTokenList* SVGAElement::RelList() {
+  if (!mRelList) {
+    mRelList = new nsDOMTokenList(this, nsGkAtoms::rel, sSupportedRelValues);
+  }
+  return mRelList;
+}
+
+void SVGAElement::GetHreflang(nsAString& aHreflang) {
+  GetAttr(nsGkAtoms::hreflang, aHreflang);
+}
+
+void SVGAElement::SetHreflang(const nsAString& aHreflang,
+                              mozilla::ErrorResult& rv) {
+  SetAttr(nsGkAtoms::hreflang, aHreflang, rv);
+}
+
+void SVGAElement::GetType(nsAString& aType) { GetAttr(nsGkAtoms::type, aType); }
+
+void SVGAElement::SetType(const nsAString& aType, mozilla::ErrorResult& rv) {
+  SetAttr(nsGkAtoms::type, aType, rv);
+}
+
+void SVGAElement::GetText(nsAString& aText, mozilla::ErrorResult& rv) {
+  if (NS_WARN_IF(
+          !nsContentUtils::GetNodeTextContent(this, true, aText, fallible))) {
+    rv.Throw(NS_ERROR_OUT_OF_MEMORY);
+  }
+}
+
+void SVGAElement::SetText(const nsAString& aText, mozilla::ErrorResult& rv) {
+  rv = nsContentUtils::SetNodeTextContent(this, aText, false);
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods
+
+nsresult SVGAElement::BindToTree(BindContext& aContext, nsINode& aParent) {
+  Link::ResetLinkState(false, Link::ElementHasHref());
+
+  nsresult rv = SVGAElementBase::BindToTree(aContext, aParent);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (Document* doc = aContext.GetComposedDoc()) {
+    doc->RegisterPendingLinkUpdate(this);
+  }
+
+  return NS_OK;
+}
+
+void SVGAElement::UnbindFromTree(bool aNullParent) {
+  // Without removing the link state we risk a dangling pointer
+  // in the mStyledLinks hashtable
+  Link::ResetLinkState(false, Link::ElementHasHref());
+
+  SVGAElementBase::UnbindFromTree(aNullParent);
+}
+
+already_AddRefed<nsIURI> SVGAElement::GetHrefURI() const {
+  nsCOMPtr<nsIURI> hrefURI;
+  return IsLink(getter_AddRefs(hrefURI)) ? hrefURI.forget() : nullptr;
+}
+
+NS_IMETHODIMP_(bool)
+SVGAElement::IsAttributeMapped(const nsAtom* name) const {
+  static const MappedAttributeEntry* const map[] = {sFEFloodMap,
+                                                    sFiltersMap,
+                                                    sFontSpecificationMap,
+                                                    sGradientStopMap,
+                                                    sLightingEffectsMap,
+                                                    sMarkersMap,
+                                                    sTextContentElementsMap,
+                                                    sViewportsMap};
+
+  return FindAttributeDependence(name, map) ||
+         SVGAElementBase::IsAttributeMapped(name);
+}
+
+int32_t SVGAElement::TabIndexDefault() { return 0; }
+
+bool SVGAElement::IsFocusableInternal(int32_t* aTabIndex, bool aWithMouse) {
+  bool isFocusable = false;
+  if (IsSVGFocusable(&isFocusable, aTabIndex)) {
+    return isFocusable;
+  }
+
+  if (!OwnerDoc()->LinkHandlingEnabled()) {
+    return false;
+  }
+
+  // Links that are in an editable region should never be focusable, even if
+  // they are in a contenteditable="false" region.
+  if (nsContentUtils::IsNodeInEditableRegion(this)) {
+    if (aTabIndex) {
+      *aTabIndex = -1;
+    }
+    return false;
+  }
+
+  if (GetTabIndexAttrValue().isNothing()) {
+    // check whether we're actually a link
+    if (!Link::HasURI()) {
+      // Not tabbable or focusable without href (bug 17605), unless
+      // forced to be via presence of nonnegative tabindex attribute
+      if (aTabIndex) {
+        *aTabIndex = -1;
+      }
+      return false;
+    }
+  }
+
+  if (aTabIndex && (sTabFocusModel & eTabFocus_linksMask) == 0) {
+    *aTabIndex = -1;
+  }
+
+  return true;
+}
+
+bool SVGAElement::IsLink(nsIURI** aURI) const {
+  // To be a clickable XLink for styling and interaction purposes, we require:
+  //
+  //   xlink:href    - must be set
+  //   xlink:type    - must be unset or set to "" or set to "simple"
+  //   xlink:show    - must be unset or set to "", "new" or "replace"
+  //   xlink:actuate - must be unset or set to "" or "onRequest"
+  //
+  // For any other values, we're either not a *clickable* XLink, or the end
+  // result is poorly specified. Either way, we return false.
+
+  static Element::AttrValuesArray sTypeVals[] = {nsGkAtoms::_empty,
+                                                 nsGkAtoms::simple, nullptr};
+
+  static Element::AttrValuesArray sShowVals[] = {
+      nsGkAtoms::_empty, nsGkAtoms::_new, nsGkAtoms::replace, nullptr};
+
+  static Element::AttrValuesArray sActuateVals[] = {
+      nsGkAtoms::_empty, nsGkAtoms::onRequest, nullptr};
+
+  // Optimization: check for href first for early return
+  bool useBareHref = mStringAttributes[HREF].IsExplicitlySet();
+
+  if ((useBareHref || mStringAttributes[XLINK_HREF].IsExplicitlySet()) &&
+      FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::type, sTypeVals,
+                      eCaseMatters) != Element::ATTR_VALUE_NO_MATCH &&
+      FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show, sShowVals,
+                      eCaseMatters) != Element::ATTR_VALUE_NO_MATCH &&
+      FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::actuate, sActuateVals,
+                      eCaseMatters) != Element::ATTR_VALUE_NO_MATCH) {
+    // Get absolute URI
+    nsAutoString str;
+    const uint8_t idx = useBareHref ? HREF : XLINK_HREF;
+    mStringAttributes[idx].GetAnimValue(str, this);
+    nsContentUtils::NewURIWithDocumentCharset(aURI, str, OwnerDoc(),
+                                              GetBaseURI());
+    // must promise out param is non-null if we return true
+    return !!*aURI;
+  }
+
+  *aURI = nullptr;
+  return false;
+}
+
+void SVGAElement::GetLinkTarget(nsAString& aTarget) {
+  mStringAttributes[TARGET].GetAnimValue(aTarget, this);
+  if (aTarget.IsEmpty()) {
+    static Element::AttrValuesArray sShowVals[] = {nsGkAtoms::_new,
+                                                   nsGkAtoms::replace, nullptr};
+
+    switch (FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show, sShowVals,
+                            eCaseMatters)) {
+      case 0:
+        aTarget.AssignLiteral("_blank");
+        return;
+      case 1:
+        return;
+    }
+    Document* ownerDoc = OwnerDoc();
+    if (ownerDoc) {
+      ownerDoc->GetBaseTarget(aTarget);
+    }
+  }
+}
+
+EventStates SVGAElement::IntrinsicState() const {
+  return Link::LinkState() | SVGAElementBase::IntrinsicState();
+}
+
+nsresult SVGAElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
+                                   const nsAttrValue* aValue,
+                                   const nsAttrValue* aOldValue,
+                                   nsIPrincipal* aMaybeScriptedPrincipal,
+                                   bool aNotify) {
+  if (aName == nsGkAtoms::href && (aNameSpaceID == kNameSpaceID_XLink ||
+                                   aNameSpaceID == kNameSpaceID_None)) {
+    // We can't assume that null aValue means we no longer have an href, because
+    // we could be unsetting xlink:href but still have a null-namespace href, or
+    // vice versa.  But we can fast-path the case when we _do_ have a new value.
+    Link::ResetLinkState(aNotify, aValue || Link::ElementHasHref());
+  }
+
+  return SVGAElementBase::AfterSetAttr(aNameSpaceID, aName, aValue, aOldValue,
+                                       aMaybeScriptedPrincipal, aNotify);
+}
+
+//----------------------------------------------------------------------
+// SVGElement methods
+
+SVGElement::StringAttributesInfo SVGAElement::GetStringInfo() {
+  return StringAttributesInfo(mStringAttributes, sStringInfo,
+                              ArrayLength(sStringInfo));
+}
+
+}  // namespace dom
+}  // namespace mozilla