1 files changed, 63 insertions, 0 deletions
diff --git a/dom/svg/SVGSwitchElement.h b/dom/svg/SVGSwitchElement.h
new file mode 100644
index 0000000000..c244c0fe51
--- /dev/null
+++ b/dom/svg/SVGSwitchElement.h
@@ -0,0 +1,63 @@
+/* -*- 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_SVGSWITCHELEMENT_H_
+#define DOM_SVG_SVGSWITCHELEMENT_H_
+
+#include "mozilla/dom/SVGGraphicsElement.h"
+#include "nsCOMPtr.h"
+
+nsresult NS_NewSVGSwitchElement(
+    nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
+
+namespace mozilla {
+class ErrorResult;
+namespace dom {
+
+using SVGSwitchElementBase = SVGGraphicsElement;
+
+class SVGSwitchElement final : public SVGSwitchElementBase {
+ protected:
+  friend nsresult(::NS_NewSVGSwitchElement(
+      nsIContent** aResult,
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
+  explicit SVGSwitchElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
+  ~SVGSwitchElement() = default;
+  JSObject* WrapNode(JSContext* aCx,
+                     JS::Handle<JSObject*> aGivenProto) override;
+
+ public:
+  NS_IMPL_FROMNODE_WITH_TAG(SVGSwitchElement, kNameSpaceID_SVG, svgSwitch)
+
+  nsIContent* GetActiveChild() const { return mActiveChild; }
+  void MaybeInvalidate();
+
+  // interfaces:
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGSwitchElement,
+                                           SVGSwitchElementBase)
+  // nsINode
+  virtual void InsertChildBefore(nsIContent* aKid, nsIContent* aBeforeThis,
+                                 bool aNotify, ErrorResult& aRv) override;
+  void RemoveChildNode(nsIContent* aKid, bool aNotify) override;
+
+  // nsIContent
+  nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
+
+ private:
+  void UpdateActiveChild() { mActiveChild = FindActiveChild(); }
+  nsIContent* FindActiveChild() const;
+
+  // only this child will be displayed
+  nsCOMPtr<nsIContent> mActiveChild;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // DOM_SVG_SVGSWITCHELEMENT_H_