1 files changed, 59 insertions, 0 deletions
diff --git a/dom/xul/nsXULPopupListener.h b/dom/xul/nsXULPopupListener.h
new file mode 100644
index 0000000000..ac5a631118
--- /dev/null
+++ b/dom/xul/nsXULPopupListener.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/. */
+
+/**
+ * This is the popup listener implementation for popup menus and context menus.
+ */
+
+#ifndef nsXULPopupListener_h___
+#define nsXULPopupListener_h___
+
+#include "nsCOMPtr.h"
+
+#include "nsIDOMEventListener.h"
+#include "nsCycleCollectionParticipant.h"
+
+class nsIContent;
+
+namespace mozilla::dom {
+class Element;
+class MouseEvent;
+}  // namespace mozilla::dom
+
+class nsXULPopupListener : public nsIDOMEventListener {
+ public:
+  // aElement is the element that the popup is attached to. If aIsContext is
+  // false, the popup opens on left click on aElement or a descendant. If
+  // aIsContext is true, the popup is a context menu which opens on a
+  // context menu event.
+  nsXULPopupListener(mozilla::dom::Element* aElement, bool aIsContext);
+
+  // nsISupports
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SKIPPABLE_CLASS(nsXULPopupListener)
+  NS_DECL_NSIDOMEVENTLISTENER
+
+ protected:
+  virtual ~nsXULPopupListener(void);
+
+  // open the popup. aEvent is the event that triggered the popup such as
+  // a mouse click and aTargetContent is the target of this event.
+  virtual nsresult LaunchPopup(mozilla::dom::MouseEvent* aEvent);
+
+  // close the popup when the listener goes away
+  virtual void ClosePopup();
+
+ private:
+  // |mElement| is the node to which this listener is attached.
+  RefPtr<mozilla::dom::Element> mElement;
+
+  // The popup that is getting shown on top of mElement.
+  RefPtr<mozilla::dom::Element> mPopupContent;
+
+  // true if a context popup
+  bool mIsContext;
+};
+
+#endif  // nsXULPopupListener_h___