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/*
* Copyright 2014 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Charles Kerr <charles.kerr@canonical.com>
*/
#ifndef INDICATOR_DATETIME_CLOCK_WATCHER_H
#define INDICATOR_DATETIME_CLOCK_WATCHER_H
#include <datetime/state.h>
#include <datetime/appointment.h>
#include <core/signal.h>
#include <memory>
#include <set>
#include <string>
namespace unity {
namespace indicator {
namespace datetime {
/**
* \brief Watches the clock and appointments to notify when an
* appointment's time is reached.
*/
class ClockWatcher
{
public:
ClockWatcher() =default;
virtual ~ClockWatcher() =default;
virtual core::Signal<const Appointment&>& alarm_reached() = 0;
};
/**
* \brief A #ClockWatcher implementation
*/
class ClockWatcherImpl: public ClockWatcher
{
public:
ClockWatcherImpl(const std::shared_ptr<const State>& state);
~ClockWatcherImpl() =default;
core::Signal<const Appointment&>& alarm_reached();
private:
void pulse();
std::set<std::string> m_triggered;
std::shared_ptr<const State> m_state;
core::Signal<const Appointment&> m_alarm_reached;
};
} // namespace datetime
} // namespace indicator
} // namespace unity
#endif // INDICATOR_DATETIME_CLOCK_WATCHER_H
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