aura: Gesture event plumbing (skeleton).

ui/aura/window_delegate.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
 #ifndef UI_AURA_WINDOW_DELEGATE_H_
 #define UI_AURA_WINDOW_DELEGATE_H_
 #pragma once
 
 #include "ui/aura/aura_export.h"
 #include "ui/base/events.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gfx {
 class Canvas;
 class Point;
 class Rect;
 class Size;
 }
 
 namespace aura {
 
 class Event;
+class GestureEvent;
 class KeyEvent;
 class MouseEvent;
 class TouchEvent;
 
 // Delegate interface for aura::Window.
 class AURA_EXPORT WindowDelegate {
  public:
   // Returns the window's minimum size, or size 0,0 if there is no limit.
   virtual gfx::Size GetMinimumSize() const = 0;
 
@@ skipping 12 matching lines @@
   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) = 0;
 
   // Returns the non-client component (see hit_test.h) containing |point|, in
   // window coordinates.
   virtual int GetNonClientComponent(const gfx::Point& point) const = 0;
 
   virtual bool OnMouseEvent(MouseEvent* event) = 0;
 
   virtual ui::TouchStatus OnTouchEvent(TouchEvent* event) = 0;
 
+  virtual ui::GestureStatus OnGestureEvent(GestureEvent* event) = 0;
+
   // Returns true of the window can be focused.
   virtual bool CanFocus() = 0;
 
   // Invoked when mouse capture is lost on the window.
   virtual void OnCaptureLost() = 0;
 
   // Asks the delegate to paint window contents into the supplied canvas.
   virtual void OnPaint(gfx::Canvas* canvas) = 0;
 
   // Called from Window's destructor before OnWindowDestroyed and before the
   // children have been destroyed.
   virtual void OnWindowDestroying() = 0;
 
   // Called when the Window has been destroyed (i.e. from its destructor). This
   // is called after OnWindowDestroying and after the children have been
   // deleted.
   // The delegate can use this as an opportunity to delete itself if necessary.
   virtual void OnWindowDestroyed() = 0;
 
   // Called when the visibility of a Window changed.
   virtual void OnWindowVisibilityChanged(bool visible) = 0;
 
  protected:
   virtual ~WindowDelegate() {}
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_DELEGATE_H_