Add content::RenderWidgetHost::MouseEventCallback

content/public/browser/render_widget_host.h

 // 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 CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_
 
 #include "base/callback.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/keyboard_listener.h"
@@ skipping 11 matching lines @@
 #include "skia/ext/platform_device.h"
 #endif
 
 class SkBitmap;
 
 namespace gfx {
 class Rect;
 }
 
 namespace WebKit {
+class WebMouseEvent;
 struct WebScreenInfo;
 }
 
 namespace content {
 
 class RenderProcessHost;
 class RenderWidgetHostImpl;
 class RenderWidgetHostView;
 
 // A RenderWidgetHost manages the browser side of a browser<->renderer
@@ skipping 247 matching lines @@
   // Access to the implementation's IPC::Listener::OnMessageReceived. Intended
   // only for test code.
 
   // Add a keyboard listener that can handle key presses without requiring
   // focus.
   virtual void AddKeyboardListener(KeyboardListener* listener) = 0;
 
   // Remove a keyboard listener.
   virtual void RemoveKeyboardListener(KeyboardListener* listener) = 0;
 
+  // Add/remove a callback that can handle all kinds of mouse events.
+  typedef base::Callback<bool(const WebKit::WebMouseEvent&)> MouseEventCallback;
+  virtual void AddMouseEventCallback(const MouseEventCallback& callback) = 0;
+  virtual void RemoveMouseEventCallback(const MouseEventCallback& callback) = 0;
+
   // Get the screen info corresponding to this render widget.
   virtual void GetWebScreenInfo(WebKit::WebScreenInfo* result) = 0;
 
   // Grabs snapshot from renderer side and returns the bitmap to a callback.
   // If |src_rect| is empty, the whole contents is copied. This is an expensive
   // operation due to the IPC, but it can be used as a fallback method when
   // CopyFromBackingStore fails due to the backing store not being available or,
   // in composited mode, when the accelerated surface is not available to the
   // browser side.
   virtual void GetSnapshotFromRenderer(
       const gfx::Rect& src_subrect,
       const base::Callback<void(bool, const SkBitmap&)>& callback) = 0;
 
  protected:
   friend class RenderWidgetHostImpl;
 
   // Retrieves the implementation class.  Intended only for code
   // within content/.  This method is necessary because
   // RenderWidgetHost is the root of a diamond inheritance pattern, so
   // subclasses inherit it virtually, which removes our ability to
   // static_cast to the subclass.
   virtual RenderWidgetHostImpl* AsRenderWidgetHostImpl() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_