/*
    Copyright (C) 2011 Paul Davis

    This program 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.

    This program 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 this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include "clock_group.h"

ClockGroup::ClockGroup ()
        : ignore_changes (false)
        , _clock_mode (AudioClock::Frames)
{
}

ClockGroup::~ClockGroup()
{
}

void
ClockGroup::add (AudioClock& clock)
{
        if (clocks.insert (&clock).second) {
                clock.mode_changed.connect (sigc::bind (sigc::mem_fun (*this, &ClockGroup::one_clock_changed), &clock));
                clock.set_mode (_clock_mode);
        }
}

void
ClockGroup::remove (AudioClock& clock)
{
        clocks.erase (&clock);
}

void
ClockGroup::one_clock_changed (AudioClock* clock)
{
        if (!ignore_changes) {
                set_clock_mode (clock->mode());
        }
}

void
ClockGroup::set_clock_mode (AudioClock::Mode mode)
{
        _clock_mode = mode;

        ignore_changes = true;
        for (std::set<AudioClock*>::iterator c = clocks.begin(); c != clocks.end(); ++c) {
                (*c)->set_mode (mode);
        }
        ignore_changes = false;
}