exo: WMHelperMus: Hook up event handlers for mus+ash

components/exo/pointer.cc

Index: components/exo/pointer.cc
diff --git a/components/exo/pointer.cc b/components/exo/pointer.cc
index 750be6157548ad4dd89e9c3598b011f108b8ecd5..8eb41def9853f34552f05c397c086d7bb3cbaf75 100644
--- a/components/exo/pointer.cc
+++ b/components/exo/pointer.cc
@@ -130,6 +130,9 @@ void Pointer::SetStylusDelegate(PointerStylusDelegate* delegate) {
 void Pointer::OnMouseEvent(ui::MouseEvent* event) {
   Surface* target = GetEffectiveTargetForEvent(event);
 
+  if (target == surface_)

[reveman, 2016/08/22 13:41:42]

why is this needed?

[Peng, 2016/08/22 14:32:40]

I don't why, but on mus-ash, this surface_ will get mouse events. And I think
the surface_ is for showing cursor, so we shouldn't care about it, right?

[reveman, 2016/08/22 15:44:08]

correct this is the surface for the cursor sprite. however,
"params.accept_events = false" in Pointer::CreatePointerWidget should prevent
this from getting events dispatched to it. is that not the case for mus?

[Peng, 2016/08/22 16:15:14]

I think it must be a bug in mus+ash. I filed a bug for it and added a TODO here.

+    return;
+
   // If target is different than the current pointer focus then we need to
   // generate enter and leave events.
   if (target != focus_) {