1 files changed, 16 insertions, 0 deletions
diff --git a/layout/base/TouchManager.h b/layout/base/TouchManager.h
index 0e12c25c7d..40b9083bdb 100644
--- a/layout/base/TouchManager.h
+++ b/layout/base/TouchManager.h
@@ -12,6 +12,7 @@
 #ifndef TouchManager_h_
 #define TouchManager_h_
 
+#include "Units.h"
 #include "mozilla/BasicEvents.h"
 #include "mozilla/dom/Touch.h"
 #include "mozilla/StaticPtr.h"
@@ -20,6 +21,7 @@
 
 namespace mozilla {
 class PresShell;
+class TimeStamp;
 
 class TouchManager {
  public:
@@ -52,6 +54,8 @@ class TouchManager {
   bool PreHandleEvent(mozilla::WidgetEvent* aEvent, nsEventStatus* aStatus,
                       bool& aTouchIsNew,
                       nsCOMPtr<nsIContent>& aCurrentEventContent);
+  void PostHandleEvent(const mozilla::WidgetEvent* aEvent,
+                       const nsEventStatus* aStatus);
 
   static already_AddRefed<nsIContent> GetAnyCapturedTouchTarget();
   static bool HasCapturedTouch(int32_t aId);
@@ -59,6 +63,12 @@ class TouchManager {
   static bool ShouldConvertTouchToPointer(const dom::Touch* aTouch,
                                           const WidgetTouchEvent* aEvent);
 
+  // This should be called after PostHandleEvent() is called.  Note that this
+  // cannot check touches outside this process.  So, this should not be used for
+  // actual user input handling.  This is designed for a fallback path to
+  // dispatch mouse events for touch events synthesized without APZ.
+  static bool IsSingleTapEndToDoDefault(const WidgetTouchEvent* aTouchEndEvent);
+
  private:
   void EvictTouches(dom::Document* aLimitToDocument = nullptr);
   static void EvictTouchPoint(RefPtr<dom::Touch>& aTouch,
@@ -77,6 +87,12 @@ class TouchManager {
   static StaticAutoPtr<nsTHashMap<nsUint32HashKey, TouchInfo>>
       sCaptureTouchList;
   static layers::LayersId sCaptureTouchLayersId;
+  // The last start of a single tap.  This will be set to "Null" if the tap is
+  // consumed or becomes not a single tap.
+  static TimeStamp sSingleTouchStartTimeStamp;
+  // The last start point of the single tap tracked with
+  // sSingleTouchStartTimeStamp.
+  static LayoutDeviceIntPoint sSingleTouchStartPoint;
 };
 
 }  // namespace mozilla