aura: Gesture event plumbing (skeleton).

ui/views/widget/root_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/root_view.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 396 matching lines @@
       return ui::GESTURE_STATUS_UNKNOWN;
     }
 
     // See if this view wants to handle the Gesture.
     GestureEvent gesture_event(e, this, gesture_handling_view_);
     status = gesture_handling_view_->ProcessGestureEvent(gesture_event);
 
     // The view could have removed itself from the tree when handling
     // OnGestureEvent(). So handle as per OnMousePressed. NB: we
     // assume that the RootView itself cannot be so removed.
-    if (!gesture_handling_view_) return ui::GESTURE_STATUS_UNKNOWN;
+    if (!gesture_handling_view_)
+      return ui::GESTURE_STATUS_UNKNOWN;
 
     // The gesture event wasn't processed. Go up the view hierarchy and
     // dispatch the gesture event.
-    if (status == ui::GESTURE_STATUS_UNKNOWN) {
+    if (status == ui::GESTURE_STATUS_UNKNOWN)
       continue;
-    } else if (status == ui::GESTURE_STATUS_CONSUMED) {
+    else if (status == ui::GESTURE_STATUS_CONSUMED)
       return status;
-    } else {
+    else
       return ui::GESTURE_STATUS_UNKNOWN;
-    }
   }
   return status;
 }
 
 void RootView::SetMouseHandler(View *new_mh) {
   // If we're clearing the mouse handler, clear explicit_mouse_handler_ as well.
   explicit_mouse_handler_ = (new_mh != NULL);
   mouse_pressed_handler_ = new_mh;
   drag_info_.Reset();
 }
@@ skipping 85 matching lines @@
     // TODO(Gajen): This should be removed in future once all views are capable
     // of handling OnGestureEvent.
     return gesture_manager_->ProcessTouchEventForGesture(event, this,
         status);
   }
   return synthetic;
 }
 
 }  // namespace internal
 }  // namespace views