1 files changed, 124 insertions, 0 deletions
diff --git a/dom/svg/SVGMPathElement.cpp b/dom/svg/SVGMPathElement.cpp
new file mode 100644
index 0000000000..2695cc3aa1
--- /dev/null
+++ b/dom/svg/SVGMPathElement.cpp
@@ -0,0 +1,124 @@
+/* -*- 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/SVGMPathElement.h"
+
+#include "nsDebug.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/SVGObserverUtils.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/SVGAnimateMotionElement.h"
+#include "mozilla/dom/SVGGeometryElement.h"
+#include "nsContentUtils.h"
+#include "nsIReferrerInfo.h"
+#include "mozilla/dom/SVGMPathElementBinding.h"
+#include "nsIURI.h"
+
+NS_IMPL_NS_NEW_SVG_ELEMENT(MPath)
+
+namespace mozilla::dom {
+
+JSObject* SVGMPathElement::WrapNode(JSContext* aCx,
+                                    JS::Handle<JSObject*> aGivenProto) {
+  return SVGMPathElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+SVGElement::StringInfo SVGMPathElement::sStringInfo[2] = {
+    {nsGkAtoms::href, kNameSpaceID_None, false},
+    {nsGkAtoms::href, kNameSpaceID_XLink, false}};
+
+// Cycle collection magic -- based on SVGUseElement
+NS_IMPL_CYCLE_COLLECTION_CLASS(SVGMPathElement)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SVGMPathElement,
+                                                SVGMPathElementBase)
+  tmp->mMPathObserver = nullptr;
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(SVGMPathElement,
+                                                  SVGMPathElementBase)
+  SVGObserverUtils::TraverseMPathObserver(tmp, &cb);
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+//----------------------------------------------------------------------
+// nsISupports methods
+
+NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(SVGMPathElement,
+                                               SVGMPathElementBase)
+
+// Constructor
+SVGMPathElement::SVGMPathElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+    : SVGMPathElementBase(std::move(aNodeInfo)) {}
+
+//----------------------------------------------------------------------
+// nsINode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGMPathElement)
+
+already_AddRefed<DOMSVGAnimatedString> SVGMPathElement::Href() {
+  return mStringAttributes[HREF].IsExplicitlySet()
+             ? mStringAttributes[HREF].ToDOMAnimatedString(this)
+             : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods
+
+void SVGMPathElement::UnbindFromTree(bool aNullParent) {
+  mMPathObserver = nullptr;
+  NotifyParentOfMpathChange();
+  SVGMPathElementBase::UnbindFromTree(aNullParent);
+}
+
+void SVGMPathElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
+                                   const nsAttrValue* aValue,
+                                   const nsAttrValue* aOldValue,
+                                   nsIPrincipal* aMaybeScriptedPrincipal,
+                                   bool aNotify) {
+  if (aName == nsGkAtoms::href &&
+      (aNamespaceID == kNameSpaceID_None ||
+       (aNamespaceID == kNameSpaceID_XLink && !HasAttr(nsGkAtoms::href)))) {
+    mMPathObserver = nullptr;
+    NotifyParentOfMpathChange();
+  }
+
+  return SVGMPathElementBase::AfterSetAttr(
+      aNamespaceID, aName, aValue, aOldValue, aMaybeScriptedPrincipal, aNotify);
+}
+
+//----------------------------------------------------------------------
+// SVGElement methods
+
+SVGElement::StringAttributesInfo SVGMPathElement::GetStringInfo() {
+  return StringAttributesInfo(mStringAttributes, sStringInfo,
+                              ArrayLength(sStringInfo));
+}
+
+//----------------------------------------------------------------------
+// Public helper methods
+
+void SVGMPathElement::HrefAsString(nsAString& aHref) {
+  if (mStringAttributes[SVGMPathElement::HREF].IsExplicitlySet()) {
+    mStringAttributes[SVGMPathElement::HREF].GetBaseValue(aHref, this);
+  } else {
+    mStringAttributes[SVGMPathElement::XLINK_HREF].GetBaseValue(aHref, this);
+  }
+}
+
+SVGGeometryElement* SVGMPathElement::GetReferencedPath() {
+  return SVGObserverUtils::GetAndObserveMPathsPath(this);
+}
+
+void SVGMPathElement::NotifyParentOfMpathChange() {
+  if (auto* animateMotionParent =
+          SVGAnimateMotionElement::FromNodeOrNull(GetParent())) {
+    animateMotionParent->MpathChanged();
+    AnimationNeedsResample();
+  }
+}
+
+}  // namespace mozilla::dom