1 files changed, 95 insertions, 0 deletions
diff --git a/dom/svg/SVGStyleElement.h b/dom/svg/SVGStyleElement.h
new file mode 100644
index 0000000000..23d58f67c2
--- /dev/null
+++ b/dom/svg/SVGStyleElement.h
@@ -0,0 +1,95 @@
+/* -*- 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 DOM_SVG_SVGSTYLEELEMENT_H_
+#define DOM_SVG_SVGSTYLEELEMENT_H_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/LinkStyle.h"
+#include "SVGElement.h"
+#include "nsStubMutationObserver.h"
+
+nsresult NS_NewSVGStyleElement(
+    nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
+
+namespace mozilla {
+namespace dom {
+
+using SVGStyleElementBase = SVGElement;
+
+class SVGStyleElement final : public SVGStyleElementBase,
+                              public nsStubMutationObserver,
+                              public LinkStyle {
+ protected:
+  friend nsresult(::NS_NewSVGStyleElement(
+      nsIContent** aResult,
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
+  explicit SVGStyleElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
+  ~SVGStyleElement() = default;
+
+  virtual JSObject* WrapNode(JSContext* aCx,
+                             JS::Handle<JSObject*> aGivenProto) override;
+
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGStyleElement, SVGStyleElementBase)
+
+  // nsIContent
+  virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
+  virtual void UnbindFromTree(bool aNullParent = true) override;
+  virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
+                                const nsAttrValue* aValue,
+                                const nsAttrValue* aOldValue,
+                                nsIPrincipal* aMaybeScriptedPrincipal,
+                                bool aNotify) override;
+  virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+                              const nsAString& aValue,
+                              nsIPrincipal* aMaybeScriptedPrincipal,
+                              nsAttrValue& aResult) override;
+
+  virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
+
+  // nsIMutationObserver
+  NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
+
+  // WebIDL
+  void GetXmlspace(nsAString& aXmlspace);
+  void SetXmlspace(const nsAString& aXmlspace, ErrorResult& rv);
+  void GetMedia(nsAString& aMedia);
+  void SetMedia(const nsAString& aMedia, ErrorResult& rv);
+  void GetType(nsAString& aType);
+  void SetType(const nsAString& aType, ErrorResult& rv);
+  void GetTitle(nsAString& aTitle);
+  void SetTitle(const nsAString& aTitle, ErrorResult& rv);
+
+ protected:
+  // Dummy init method to make the NS_IMPL_NS_NEW_SVG_ELEMENT and
+  // NS_IMPL_ELEMENT_CLONE_WITH_INIT usable with this class. This should be
+  // completely optimized away.
+  inline nsresult Init() { return NS_OK; }
+
+  // LinkStyle overrides
+  nsIContent& AsContent() final { return *this; }
+  const LinkStyle* AsLinkStyle() const final { return this; }
+  Maybe<SheetInfo> GetStyleSheetInfo() final;
+
+  /**
+   * Common method to call from the various mutation observer methods.
+   * aContent is a content node that's either the one that changed or its
+   * parent; we should only respond to the change if aContent is non-anonymous.
+   */
+  void ContentChanged(nsIContent* aContent);
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // DOM_SVG_SVGSTYLEELEMENT_H_