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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef BASE_EVENT_RECORDER_H_
#define BASE_EVENT_RECORDER_H_
#include <string>
#include <windows.h>
#include "base/basictypes.h"
namespace base {
// A class for recording and playing back keyboard and mouse input events.
//
// Note - if you record events, and the playback with the windows in
// different sizes or positions, the playback will fail. When
// recording and playing, you should move the relevant windows
// to constant sizes and locations.
// TODO(mbelshe) For now this is a singleton. I believe that this class
// could be easily modified to:
// support two simultaneous recorders
// be playing back events while already recording events.
// Why? Imagine if the product had a "record a macro" feature.
// You might be recording globally, while recording or playing back
// a macro. I don't think two playbacks make sense.
class EventRecorder {
public:
// Get the singleton EventRecorder.
// We can only handle one recorder/player at a time.
static EventRecorder* current() {
if (!current_)
current_ = new EventRecorder();
return current_;
}
// Starts recording events.
// Will clobber the file if it already exists.
// Returns true on success, or false if an error occurred.
bool StartRecording(std::wstring &filename);
// Stops recording.
void StopRecording();
// Is the EventRecorder currently recording.
bool is_recording() const { return is_recording_; }
// Plays events previously recorded.
// Returns true on success, or false if an error occurred.
bool StartPlayback(std::wstring &filename);
// Stops playback.
void StopPlayback();
// Is the EventRecorder currently playing.
bool is_playing() const { return is_playing_; }
// C-style callbacks for the EventRecorder.
// Used for internal purposes only.
LRESULT RecordWndProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT PlaybackWndProc(int nCode, WPARAM wParam, LPARAM lParam);
private:
// Create a new EventRecorder. Events are saved to the file filename.
// If the file already exists, it will be deleted before recording
// starts.
explicit EventRecorder()
: is_recording_(false),
is_playing_(false),
journal_hook_(NULL),
file_(NULL) {
}
~EventRecorder();
static EventRecorder* current_; // Our singleton.
bool is_recording_;
bool is_playing_;
HHOOK journal_hook_;
FILE* file_;
EVENTMSG playback_msg_;
int playback_first_msg_time_;
int playback_start_time_;
DISALLOW_EVIL_CONSTRUCTORS(EventRecorder);
};
} // namespace base
#endif // BASE_EVENT_RECORDER_H_
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