1 files changed, 68 insertions, 0 deletions
diff --git a/dom/html/HTMLDialogElement.h b/dom/html/HTMLDialogElement.h
new file mode 100644
index 0000000000..88669074db
--- /dev/null
+++ b/dom/html/HTMLDialogElement.h
@@ -0,0 +1,68 @@
+/* -*- 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 HTMLDialogElement_h
+#define HTMLDialogElement_h
+
+#include "mozilla/AsyncEventDispatcher.h"
+#include "mozilla/Attributes.h"
+#include "nsGenericHTMLElement.h"
+#include "nsGkAtoms.h"
+
+namespace mozilla::dom {
+
+class HTMLDialogElement final : public nsGenericHTMLElement {
+ public:
+  explicit HTMLDialogElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+      : nsGenericHTMLElement(std::move(aNodeInfo)),
+        mPreviouslyFocusedElement(nullptr) {}
+
+  NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLDialogElement, dialog)
+
+  nsresult Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const override;
+
+  static bool IsDialogEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj);
+
+  bool Open() const { return GetBoolAttr(nsGkAtoms::open); }
+  void SetOpen(bool aOpen, ErrorResult& aError) {
+    SetHTMLBoolAttr(nsGkAtoms::open, aOpen, aError);
+  }
+
+  void GetReturnValue(nsAString& aReturnValue) { aReturnValue = mReturnValue; }
+  void SetReturnValue(const nsAString& aReturnValue) {
+    mReturnValue = aReturnValue;
+  }
+
+  void UnbindFromTree(bool aNullParent = true) override;
+
+  void Close(const mozilla::dom::Optional<nsAString>& aReturnValue);
+  void Show();
+  void ShowModal(ErrorResult& aError);
+
+  bool IsInTopLayer() const;
+  void QueueCancelDialog();
+  void RunCancelDialogSteps();
+
+  nsString mReturnValue;
+
+ protected:
+  virtual ~HTMLDialogElement();
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY void FocusDialog();
+  JSObject* WrapNode(JSContext* aCx,
+                     JS::Handle<JSObject*> aGivenProto) override;
+
+ private:
+  void AddToTopLayerIfNeeded();
+  void RemoveFromTopLayerIfNeeded();
+  void StorePreviouslyFocusedElement();
+
+  nsWeakPtr mPreviouslyFocusedElement;
+};
+
+}  // namespace mozilla::dom
+
+#endif