1// Copyright (c) 2012 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_MANAGER_H_
6#define CONTENT_RENDERER_GPU_INPUT_HANDLER_MANAGER_H_
7
8#include <map>
9
10#include "base/memory/ref_counted.h"
11#include "base/memory/weak_ptr.h"
12#include "content/port/common/input_event_ack_state.h"
13#include "content/renderer/render_view_impl.h"
14
15namespace base {
16class MessageLoopProxy;
17}
18
19namespace cc {
20class InputHandler;
21struct DidOverscrollParams;
22}
23
24namespace WebKit {
25class WebInputEvent;
26}
27
28namespace content {
29
30class InputHandlerWrapper;
31class InputHandlerManagerClient;
32
33// InputHandlerManager class manages InputHandlerProxy instances for
34// the WebViews in this renderer.
35class InputHandlerManager {
36 public:
37  // |message_loop_proxy| is the MessageLoopProxy of the compositor thread. Both
38  // the underlying MessageLoop and supplied |client| must outlive this object.
39  InputHandlerManager(
40      const scoped_refptr<base::MessageLoopProxy>& message_loop_proxy,
41      InputHandlerManagerClient* client);
42  ~InputHandlerManager();
43
44  // Callable from the main thread only.
45  void AddInputHandler(
46      int routing_id,
47      const base::WeakPtr<cc::InputHandler>& input_handler,
48      const base::WeakPtr<RenderViewImpl>& render_view_impl);
49
50  // Callback only from the compositor's thread.
51  void RemoveInputHandler(int routing_id);
52
53  // Called from the compositor's thread.
54  InputEventAckState HandleInputEvent(int routing_id,
55                                      const WebKit::WebInputEvent* input_event,
56                                      const ui::LatencyInfo& latency_info);
57
58  // Called from the compositor's thread.
59  void DidOverscroll(int routing_id, const cc::DidOverscrollParams& params);
60
61 private:
62  // Called from the compositor's thread.
63  void AddInputHandlerOnCompositorThread(
64      int routing_id,
65      const scoped_refptr<base::MessageLoopProxy>& main_loop,
66      const base::WeakPtr<cc::InputHandler>& input_handler,
67      const base::WeakPtr<RenderViewImpl>& render_view_impl);
68
69  typedef std::map<int,  // routing_id
70                   scoped_refptr<InputHandlerWrapper> > InputHandlerMap;
71  InputHandlerMap input_handlers_;
72
73  scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
74  InputHandlerManagerClient* client_;
75};
76
77}  // namespace content
78
79#endif  // CONTENT_RENDERER_GPU_INPUT_HANDLER_MANAGER_H_
80