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comparison: ipc/chromium/src/base/event_recorder.h
ipc/chromium/src/base/event_recorder.h
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| 1 // Copyright (c) 2006-2008 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 <string> | |
| 9 #if defined(OS_WIN) | |
| 10 #include <windows.h> | |
| 11 #endif | |
| 12 #include "base/basictypes.h" | |
| 13 | |
| 14 class FilePath; | |
| 15 | |
| 16 namespace base { | |
| 17 | |
| 18 // A class for recording and playing back keyboard and mouse input events. | |
| 19 // | |
| 20 // Note - if you record events, and the playback with the windows in | |
| 21 // different sizes or positions, the playback will fail. When | |
| 22 // recording and playing, you should move the relevant windows | |
| 23 // to constant sizes and locations. | |
| 24 // TODO(mbelshe) For now this is a singleton. I believe that this class | |
| 25 // could be easily modified to: | |
| 26 // support two simultaneous recorders | |
| 27 // be playing back events while already recording events. | |
| 28 // Why? Imagine if the product had a "record a macro" feature. | |
| 29 // You might be recording globally, while recording or playing back | |
| 30 // a macro. I don't think two playbacks make sense. | |
| 31 class EventRecorder { | |
| 32 public: | |
| 33 // Get the singleton EventRecorder. | |
| 34 // We can only handle one recorder/player at a time. | |
| 35 static EventRecorder* current() { | |
| 36 if (!current_) | |
| 37 current_ = new EventRecorder(); | |
| 38 return current_; | |
| 39 } | |
| 40 | |
| 41 // Starts recording events. | |
| 42 // Will clobber the file if it already exists. | |
| 43 // Returns true on success, or false if an error occurred. | |
| 44 bool StartRecording(const FilePath& filename); | |
| 45 | |
| 46 // Stops recording. | |
| 47 void StopRecording(); | |
| 48 | |
| 49 // Is the EventRecorder currently recording. | |
| 50 bool is_recording() const { return is_recording_; } | |
| 51 | |
| 52 // Plays events previously recorded. | |
| 53 // Returns true on success, or false if an error occurred. | |
| 54 bool StartPlayback(const FilePath& filename); | |
| 55 | |
| 56 // Stops playback. | |
| 57 void StopPlayback(); | |
| 58 | |
| 59 // Is the EventRecorder currently playing. | |
| 60 bool is_playing() const { return is_playing_; } | |
| 61 | |
| 62 #if defined(OS_WIN) | |
| 63 // C-style callbacks for the EventRecorder. | |
| 64 // Used for internal purposes only. | |
| 65 LRESULT RecordWndProc(int nCode, WPARAM wParam, LPARAM lParam); | |
| 66 LRESULT PlaybackWndProc(int nCode, WPARAM wParam, LPARAM lParam); | |
| 67 #endif | |
| 68 | |
| 69 private: | |
| 70 // Create a new EventRecorder. Events are saved to the file filename. | |
| 71 // If the file already exists, it will be deleted before recording | |
| 72 // starts. | |
| 73 explicit EventRecorder() | |
| 74 : is_recording_(false), | |
| 75 is_playing_(false), | |
| 76 #if defined(OS_WIN) | |
| 77 journal_hook_(NULL), | |
| 78 file_(NULL), | |
| 79 #endif | |
| 80 playback_first_msg_time_(0), | |
| 81 playback_start_time_(0) { | |
| 82 } | |
| 83 ~EventRecorder(); | |
| 84 | |
| 85 static EventRecorder* current_; // Our singleton. | |
| 86 | |
| 87 bool is_recording_; | |
| 88 bool is_playing_; | |
| 89 #if defined(OS_WIN) | |
| 90 HHOOK journal_hook_; | |
| 91 FILE* file_; | |
| 92 EVENTMSG playback_msg_; | |
| 93 #endif | |
| 94 int playback_first_msg_time_; | |
| 95 int playback_start_time_; | |
| 96 | |
| 97 DISALLOW_EVIL_CONSTRUCTORS(EventRecorder); | |
| 98 }; | |
| 99 | |
| 100 } // namespace base | |
| 101 | |
| 102 #endif // BASE_EVENT_RECORDER_H_ |
