43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
/*
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* Copyright (C) 2016 Paul Davis <paul@linuxaudiosystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __libardour_control_group_member_h__
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#define __libardour_control_group_member_h__
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namespace ARDOUR {
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class ControlGroup;
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class LIBARDOUR_API ControlGroupMember
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{
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public:
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virtual ~ControlGroupMember () {};
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private:
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friend class ControlGroup;
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/* Only a ControlGroup can call this; all membership changes must be
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mediated by the ControlGroup, not by operating on the member.
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*/
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virtual void set_group (std::shared_ptr<ControlGroup>) = 0;
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virtual bool push_group (std::shared_ptr<ControlGroup>) = 0;
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virtual bool pop_group () = 0;
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};
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} /* namespace */
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#endif /* __libardour_control_group_member_h__ */
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