7132793: [macosx] setWheelScrollEnabled action reversed

Reviewed-by: serb, art

src/macosx/classes/sun/lwawt/LWComponentPeer.java

@@ -1226,7 +1226,7 @@ public abstract class LWComponentPeer<T extends Component, D extends JComponent>
         sendEventToDelegate(e);
     }
 
-    private void sendEventToDelegate(final AWTEvent e) {
+    protected void sendEventToDelegate(final AWTEvent e) {
         synchronized (getDelegateLock()) {
             if (getDelegate() == null || !isShowing() || !isEnabled()) {
                 return;

src/macosx/classes/sun/lwawt/LWScrollPanePeer.java

@@ -29,6 +29,7 @@ import javax.swing.*;
 import javax.swing.event.ChangeListener;
 import javax.swing.event.ChangeEvent;
 import java.awt.*;
+import java.awt.event.MouseWheelEvent;
 import java.awt.peer.ScrollPanePeer;
 import java.util.List;
 
@@ -51,6 +52,21 @@ final class LWScrollPanePeer extends LWContainerPeer<ScrollPane, JScrollPane>
         return sp;
     }
 
+    @Override
+    public void handleEvent(AWTEvent e) {
+        if (e instanceof MouseWheelEvent) {
+            MouseWheelEvent wheelEvent = (MouseWheelEvent) e;
+            //java.awt.ScrollPane consumes the event
+            // in case isWheelScrollingEnabled() is true,
+            // forcibly send the consumed event to the delegate
+            if (getTarget().isWheelScrollingEnabled() && wheelEvent.isConsumed()) {
+                sendEventToDelegate(wheelEvent);
+            }
+        } else {
+            super.handleEvent(e);
+        }
+    }
+
     @Override
     public void stateChanged(final ChangeEvent e) {
         SwingUtilities.invokeLater(new Runnable() {