--- old/src/java.desktop/macosx/classes/sun/lwawt/macosx/NSEvent.java	2016-09-28 15:30:43.000000000 +0400
+++ new/src/java.desktop/macosx/classes/sun/lwawt/macosx/NSEvent.java	2016-09-28 15:30:43.000000000 +0400
@@ -32,6 +32,11 @@
  * JDK functionality.
  */
 final class NSEvent {
+
+    static final int SCROLL_MASK_WHEEL = 1;
+    static final int SCROLL_MASK_TRACKPAD = 1 << 1;
+    static final int SCROLL_MASK_PHASE_BEGAN = 1 << 2;
+
     private int type;
     private int modifierFlags;
 
@@ -42,6 +47,7 @@
     private int y;
     private double scrollDeltaY;
     private double scrollDeltaX;
+    private int scrollMask;
     private int absX;
     private int absY;
 
@@ -62,7 +68,7 @@
     // Called from native
     NSEvent(int type, int modifierFlags, int clickCount, int buttonNumber,
                    int x, int y, int absX, int absY,
-                   double scrollDeltaY, double scrollDeltaX) {
+                   double scrollDeltaY, double scrollDeltaX, int scrollMask) {
         this.type = type;
         this.modifierFlags = modifierFlags;
         this.clickCount = clickCount;
@@ -73,6 +79,7 @@
         this.absY = absY;
         this.scrollDeltaY = scrollDeltaY;
         this.scrollDeltaX = scrollDeltaX;
+        this.scrollMask = scrollMask;
     }
 
     int getType() {
@@ -107,6 +114,10 @@
         return scrollDeltaX;
     }
 
+    int getScrollMask() {
+        return scrollMask;
+    }
+
     int getAbsX() {
         return absX;
     }