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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_RENDERER_GPU_INPUT_HANDLER_WRAPPER_H_
      6 #define CONTENT_RENDERER_GPU_INPUT_HANDLER_WRAPPER_H_
      7 
      8 #include "base/memory/scoped_ptr.h"
      9 #include "base/memory/weak_ptr.h"
     10 #include "content/renderer/gpu/input_handler_manager.h"
     11 #include "content/renderer/gpu/input_handler_proxy.h"
     12 #include "content/renderer/gpu/input_handler_proxy_client.h"
     13 
     14 namespace content {
     15 
     16 // This class lives on the compositor thread.
     17 class InputHandlerWrapper
     18     : public InputHandlerProxyClient,
     19       public base::RefCountedThreadSafe<InputHandlerWrapper> {
     20  public:
     21   InputHandlerWrapper(InputHandlerManager* input_handler_manager,
     22                       int routing_id,
     23                       const scoped_refptr<base::MessageLoopProxy>& main_loop,
     24                       const base::WeakPtr<cc::InputHandler>& input_handler,
     25                       const base::WeakPtr<RenderViewImpl>& render_view_impl);
     26 
     27   int routing_id() const { return routing_id_; }
     28   InputHandlerProxy* input_handler_proxy() { return &input_handler_proxy_; }
     29 
     30   // InputHandlerProxyClient implementation.
     31   virtual void WillShutdown() OVERRIDE;
     32   virtual void TransferActiveWheelFlingAnimation(
     33       const WebKit::WebActiveWheelFlingParameters& params) OVERRIDE;
     34   virtual WebKit::WebGestureCurve* CreateFlingAnimationCurve(
     35       int deviceSource,
     36       const WebKit::WebFloatPoint& velocity,
     37       const WebKit::WebSize& cumulativeScroll) OVERRIDE;
     38   virtual void DidOverscroll(const cc::DidOverscrollParams& params) OVERRIDE;
     39 
     40  private:
     41   friend class base::RefCountedThreadSafe<InputHandlerWrapper>;
     42 
     43   virtual ~InputHandlerWrapper();
     44 
     45   InputHandlerManager* input_handler_manager_;
     46   int routing_id_;
     47   InputHandlerProxy input_handler_proxy_;
     48   scoped_refptr<base::MessageLoopProxy> main_loop_;
     49 
     50   // Can only be accessed on the main thread.
     51   base::WeakPtr<RenderViewImpl> render_view_impl_;
     52 
     53   DISALLOW_COPY_AND_ASSIGN(InputHandlerWrapper);
     54 };
     55 
     56 }  // namespace content
     57 
     58 #endif  // CONTENT_RENDERER_GPU_INPUT_HANDLER_WRAPPER_H_
     59