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/*
Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include <dcp/warnings.h>
LIBDCP_DISABLE_WARNINGS
#include <boost/signals2.hpp>
LIBDCP_ENABLE_WARNINGS
class wxTextCtrl;
class wxFocusEvent;
/** @class FocusManager class
* @brief A central point for notifications about when wxTextCtrls get focus in the main window.
*
* This allows us to turn off accelerators for the duration of the focus so that they don't steal
* keypresses. It's a hack but the only way I could make it work on all platforms (looking for
* the focused thing and doing ev.Skip() if it's a wxTextCtrl did not work for me on Windows:
* ev.Skip() did not cause the event to be delivered).
*/
class FocusManager
{
public:
/** emitted when any add()ed TextCtrl gets focus */
boost::signals2::signal<void ()> SetFocus;
/** emitted when any add()ed TextCtrl loses focus */
boost::signals2::signal<void ()> KillFocus;
void add(wxTextCtrl* c);
static FocusManager* instance();
private:
void set_focus(wxFocusEvent &);
void kill_focus(wxFocusEvent &);
static FocusManager* _instance;
};
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