1 files changed, 59 insertions, 0 deletions
diff --git a/dom/html/HTMLSummaryElement.h b/dom/html/HTMLSummaryElement.h
new file mode 100644
index 000000000..587383bc6
--- /dev/null
+++ b/dom/html/HTMLSummaryElement.h
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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_HTMLSummaryElement_h
+#define mozilla_dom_HTMLSummaryElement_h
+
+#include "mozilla/Attributes.h"
+#include "nsGenericHTMLElement.h"
+
+namespace mozilla {
+namespace dom {
+class HTMLDetailsElement;
+
+// HTMLSummaryElement implements the <summary> tag, which is used as a summary
+// or legend of the <details> tag. Please see the spec for more information.
+// https://html.spec.whatwg.org/multipage/forms.html#the-details-element
+//
+class HTMLSummaryElement final : public nsGenericHTMLElement
+{
+public:
+  using NodeInfo = mozilla::dom::NodeInfo;
+
+  explicit HTMLSummaryElement(already_AddRefed<NodeInfo>& aNodeInfo)
+    : nsGenericHTMLElement(aNodeInfo)
+  {
+  }
+
+  NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLSummaryElement, summary)
+
+  nsresult Clone(NodeInfo* aNodeInfo, nsINode** aResult) const override;
+
+  nsresult PostHandleEvent(EventChainPostVisitor& aVisitor) override;
+
+  bool IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable,
+                       int32_t* aTabIndex) override;
+
+  int32_t TabIndexDefault() override;
+
+  // Return true if this is the first summary element child of a details or the
+  // default summary element generated by DetailsFrame.
+  bool IsMainSummary() const;
+
+  // Return the details element which contains this summary. Otherwise return
+  // nullptr if there is no such details element.
+  HTMLDetailsElement* GetDetails() const;
+
+protected:
+  virtual ~HTMLSummaryElement();
+
+  JSObject* WrapNode(JSContext* aCx,
+                     JS::Handle<JSObject*> aGivenProto) override;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif /* mozilla_dom_HTMLSummaryElement_h */