1 files changed, 99 insertions, 0 deletions
diff --git a/layout/xul/nsXULTooltipListener.h b/layout/xul/nsXULTooltipListener.h
new file mode 100644
index 0000000000..1a665cfb33
--- /dev/null
+++ b/layout/xul/nsXULTooltipListener.h
@@ -0,0 +1,99 @@
+/* -*- 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 nsXULTooltipListener_h__
+#define nsXULTooltipListener_h__
+
+#include "nsIDOMEventListener.h"
+#include "nsITimer.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "Units.h"
+#include "nsIWeakReferenceUtils.h"
+#include "mozilla/Attributes.h"
+
+class nsIContent;
+class nsTreeColumn;
+
+namespace mozilla {
+namespace dom {
+class Event;
+class MouseEvent;
+class XULTreeElement;
+}  // namespace dom
+class WidgetKeyboardEvent;
+}  // namespace mozilla
+
+class nsXULTooltipListener final : public nsIDOMEventListener {
+ public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIDOMEVENTLISTENER
+
+  void MouseOut(mozilla::dom::Event* aEvent);
+  void MouseMove(mozilla::dom::Event* aEvent);
+
+  void AddTooltipSupport(nsIContent* aNode);
+  void RemoveTooltipSupport(nsIContent* aNode);
+  static nsXULTooltipListener* GetInstance() {
+    if (!sInstance) sInstance = new nsXULTooltipListener();
+    return sInstance;
+  }
+
+  static bool KeyEventHidesTooltip(const mozilla::WidgetKeyboardEvent&);
+  static bool ShowTooltips();
+
+ protected:
+  nsXULTooltipListener();
+  ~nsXULTooltipListener();
+
+  void KillTooltipTimer();
+
+  void CheckTreeBodyMove(mozilla::dom::MouseEvent* aMouseEvent);
+  mozilla::dom::XULTreeElement* GetSourceTree();
+
+  nsresult ShowTooltip();
+  void LaunchTooltip();
+  nsresult HideTooltip();
+  nsresult DestroyTooltip();
+  // This method tries to find a tooltip for aTarget.
+  nsresult FindTooltip(nsIContent* aTarget, nsIContent** aTooltip);
+  // This method calls FindTooltip and checks that the tooltip
+  // can be really used (i.e. tooltip is not a menu).
+  nsresult GetTooltipFor(nsIContent* aTarget, nsIContent** aTooltip);
+
+  static nsXULTooltipListener* sInstance;
+
+  nsWeakPtr mSourceNode;
+  nsWeakPtr mTargetNode;
+  nsWeakPtr mCurrentTooltip;
+  nsWeakPtr mPreviousMouseMoveTarget;
+
+  // a timer for showing the tooltip
+  nsCOMPtr<nsITimer> mTooltipTimer;
+  static void sTooltipCallback(nsITimer* aTimer, void* aListener);
+
+  // Screen coordinates of the last mousemove event, stored so that the tooltip
+  // can be opened at this location.
+  //
+  // TODO(emilio): This duplicates a lot of code with ChromeTooltipListener.
+  mozilla::LayoutDeviceIntPoint mMouseScreenPoint;
+
+  // Tolerance for mousemove event
+  static constexpr mozilla::LayoutDeviceIntCoord kTooltipMouseMoveTolerance = 7;
+
+  // flag specifying if the tooltip has already been displayed by a MouseMove
+  // event. The flag is reset on MouseOut so that the tooltip will display
+  // the next time the mouse enters the node (bug #395668).
+  bool mTooltipShownOnce;
+
+  // special members for handling trees
+  bool mIsSourceTree;
+  bool mNeedTitletip;
+  int32_t mLastTreeRow;
+  RefPtr<nsTreeColumn> mLastTreeCol;
+};
+
+#endif  // nsXULTooltipListener