1 files changed, 91 insertions, 0 deletions
diff --git a/dom/animation/CSSPseudoElement.h b/dom/animation/CSSPseudoElement.h
new file mode 100644
index 000000000..00445cc60
--- /dev/null
+++ b/dom/animation/CSSPseudoElement.h
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 mozilla_dom_CSSPseudoElement_h
+#define mozilla_dom_CSSPseudoElement_h
+
+#include "js/TypeDecls.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/RefPtr.h"
+#include "nsCSSPseudoElements.h"
+#include "nsWrapperCache.h"
+
+namespace mozilla {
+namespace dom {
+
+class Animation;
+class Element;
+class UnrestrictedDoubleOrKeyframeAnimationOptions;
+
+class CSSPseudoElement final : public nsWrapperCache
+{
+public:
+  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CSSPseudoElement)
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(CSSPseudoElement)
+
+protected:
+  virtual ~CSSPseudoElement();
+
+public:
+  ParentObject GetParentObject() const;
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  CSSPseudoElementType GetType() const { return mPseudoType; }
+  void GetType(nsString& aRetVal) const
+  {
+    MOZ_ASSERT(nsCSSPseudoElements::GetPseudoAtom(mPseudoType),
+               "All pseudo-types allowed by this class should have a"
+               " corresponding atom");
+    // Our atoms use one colon and we would like to return two colons syntax
+    // for the returned pseudo type string, so serialize this to the
+    // non-deprecated two colon syntax.
+    aRetVal.Assign(char16_t(':'));
+    aRetVal.Append(
+      nsDependentAtomString(nsCSSPseudoElements::GetPseudoAtom(mPseudoType)));
+  }
+  already_AddRefed<Element> ParentElement() const
+  {
+    RefPtr<Element> retVal(mParentElement);
+    return retVal.forget();
+  }
+
+  void GetAnimations(const AnimationFilter& filter,
+                     nsTArray<RefPtr<Animation>>& aRetVal);
+  already_AddRefed<Animation>
+    Animate(JSContext* aContext,
+            JS::Handle<JSObject*> aKeyframes,
+            const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
+            ErrorResult& aError);
+
+  // Given an element:pseudoType pair, returns the CSSPseudoElement stored as a
+  // property on |aElement|. If there is no CSSPseudoElement for the specified
+  // pseudo-type on element, a new CSSPseudoElement will be created and stored
+  // on the element.
+  static already_AddRefed<CSSPseudoElement>
+    GetCSSPseudoElement(Element* aElement, CSSPseudoElementType aType);
+
+private:
+  // Only ::before and ::after are supported.
+  CSSPseudoElement(Element* aElement, CSSPseudoElementType aType);
+
+  static nsIAtom* GetCSSPseudoElementPropertyAtom(CSSPseudoElementType aType);
+
+  // mParentElement needs to be an owning reference since if script is holding
+  // on to the pseudo-element, it needs to continue to be able to refer to
+  // the parent element.
+  RefPtr<Element> mParentElement;
+  CSSPseudoElementType mPseudoType;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_CSSPseudoElement_h