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1 // Copyright (c) 2011 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 BASE_EVENT_RECORDER_H_ | |
6 #define BASE_EVENT_RECORDER_H_ | |
7 | |
8 #include "base/base_export.h" | |
9 #include "base/basictypes.h" | |
10 #include "build/build_config.h" | |
11 | |
12 #if defined(OS_WIN) | |
13 #include <stdio.h> | |
14 #include <string.h> | |
15 #include <windows.h> | |
16 #endif | |
17 | |
18 namespace base { | |
19 | |
20 class FilePath; | |
21 | |
22 // A class for recording and playing back keyboard and mouse input events. | |
23 // | |
24 // Note - if you record events, and the playback with the windows in | |
25 // different sizes or positions, the playback will fail. When | |
26 // recording and playing, you should move the relevant windows | |
27 // to constant sizes and locations. | |
28 // TODO(mbelshe) For now this is a singleton. I believe that this class | |
29 // could be easily modified to: | |
30 // support two simultaneous recorders | |
31 // be playing back events while already recording events. | |
32 // Why? Imagine if the product had a "record a macro" feature. | |
33 // You might be recording globally, while recording or playing back | |
34 // a macro. I don't think two playbacks make sense. | |
35 class BASE_EXPORT EventRecorder { | |
36 public: | |
37 // Get the singleton EventRecorder. | |
38 // We can only handle one recorder/player at a time. | |
39 static EventRecorder* current() { | |
40 if (!current_) | |
41 current_ = new EventRecorder(); | |
42 return current_; | |
43 } | |
44 | |
45 // Starts recording events. | |
46 // Will clobber the file if it already exists. | |
47 // Returns true on success, or false if an error occurred. | |
48 bool StartRecording(const FilePath& filename); | |
49 | |
50 // Stops recording. | |
51 void StopRecording(); | |
52 | |
53 // Is the EventRecorder currently recording. | |
54 bool is_recording() const { return is_recording_; } | |
55 | |
56 // Plays events previously recorded. | |
57 // Returns true on success, or false if an error occurred. | |
58 bool StartPlayback(const FilePath& filename); | |
59 | |
60 // Stops playback. | |
61 void StopPlayback(); | |
62 | |
63 // Is the EventRecorder currently playing. | |
64 bool is_playing() const { return is_playing_; } | |
65 | |
66 #if defined(OS_WIN) | |
67 // C-style callbacks for the EventRecorder. | |
68 // Used for internal purposes only. | |
69 LRESULT RecordWndProc(int nCode, WPARAM wParam, LPARAM lParam); | |
70 LRESULT PlaybackWndProc(int nCode, WPARAM wParam, LPARAM lParam); | |
71 #endif | |
72 | |
73 private: | |
74 // Create a new EventRecorder. Events are saved to the file filename. | |
75 // If the file already exists, it will be deleted before recording | |
76 // starts. | |
77 EventRecorder() | |
78 : is_recording_(false), | |
79 is_playing_(false), | |
80 #if defined(OS_WIN) | |
81 journal_hook_(NULL), | |
82 file_(NULL), | |
83 #endif | |
84 playback_first_msg_time_(0), | |
85 playback_start_time_(0) { | |
86 #if defined(OS_WIN) | |
87 memset(&playback_msg_, 0, sizeof(playback_msg_)); | |
88 #endif | |
89 } | |
90 ~EventRecorder(); | |
91 | |
92 static EventRecorder* current_; // Our singleton. | |
93 | |
94 bool is_recording_; | |
95 bool is_playing_; | |
96 #if defined(OS_WIN) | |
97 HHOOK journal_hook_; | |
98 FILE* file_; | |
99 EVENTMSG playback_msg_; | |
100 #endif | |
101 int playback_first_msg_time_; | |
102 int playback_start_time_; | |
103 | |
104 DISALLOW_COPY_AND_ASSIGN(EventRecorder); | |
105 }; | |
106 | |
107 } // namespace base | |
108 | |
109 #endif // BASE_EVENT_RECORDER_H_ | |
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