Mouse lock implementation, including the renderer side and the Windows version of the browser side.

content/renderer/render_widget.h

 // Copyright (c) 2011 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_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 24 matching lines @@
 
 namespace IPC {
 class SyncMessage;
 }
 
 namespace skia {
 class PlatformCanvas;
 }
 
 namespace WebKit {
+class WebInputEvent;
 class WebMouseEvent;
 class WebWidget;
 struct WebPopupMenuInfo;
 }
 
 namespace webkit {
 namespace npapi {
 struct WebPluginGeometry;
 }  // namespace npapi
 
@@ skipping 242 matching lines @@
   void SetPendingWindowRect(const WebKit::WebRect& r);
 
   // Called by OnHandleInputEvent() to notify subclasses that a key event was
   // just handled.
   virtual void DidHandleKeyEvent() {}
 
   // Called by OnHandleInputEvent() to notify subclasses that a mouse event was
   // just handled.
   virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event) {}
 
+  // Called by OnHandleInputEvent() to notify subclasses that an input event is
+  // about to be handled.
+  // Returns true if the event has been handled by subclasses.
+  virtual bool OnBeforeHandleInputEvent(const WebKit::WebInputEvent& event) {
+    return false;
+  }
+
   // Routing ID that allows us to communicate to the parent browser process
   // RenderWidgetHost. When MSG_ROUTING_NONE, no messages may be sent.
   int32 routing_id_;
 
   // We are responsible for destroying this object via its Close method.
   WebKit::WebWidget* webwidget_;
 
   // Set to the ID of the view that initiated creating this view, if any. When
   // the view was initiated by the browser (the common case), this will be
   // MSG_ROUTING_NONE. This is used in determining ownership when opening
@@ skipping 121 matching lines @@
   bool animation_task_posted_;
   bool invalidation_task_posted_;
 
   bool has_disable_gpu_vsync_switch_;
   base::TimeTicks last_do_deferred_update_time_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_