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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>
*/
#include <datetime/wakeup-timer-mainloop.h>
#include <glib.h>
#include <cstdlib> // abs()
namespace ayatana {
namespace indicator {
namespace datetime {
/***
****
***/
class MainloopWakeupTimer::Impl
{
public:
Impl(const std::shared_ptr<Clock>& clock):
m_clock(clock)
{
}
~Impl()
{
cancel_timer();
}
void set_wakeup_time(const DateTime& d)
{
m_wakeup_time = d;
rebuild_timer();
}
core::Signal<>& timeout() { return m_timeout; }
private:
void rebuild_timer()
{
cancel_timer();
g_return_if_fail(m_wakeup_time.is_set());
const auto now = m_clock->localtime();
const auto difference_usec = g_date_time_difference(m_wakeup_time.get(), now.get());
const guint interval_msec = std::abs(difference_usec) / 1000u;
g_debug("%s setting wakeup timer to kick at %s, which is in %zu seconds",
G_STRFUNC,
m_wakeup_time.format("%F %T").c_str(),
size_t{interval_msec/1000});
m_timeout_tag = g_timeout_add_full(G_PRIORITY_HIGH,
interval_msec,
on_timeout,
this,
nullptr);
}
static gboolean on_timeout(gpointer gself)
{
g_debug("%s %s", G_STRLOC, G_STRFUNC);
static_cast<Impl*>(gself)->on_timeout();
return G_SOURCE_REMOVE;
}
void on_timeout()
{
cancel_timer();
m_timeout();
}
void cancel_timer()
{
if (m_timeout_tag != 0)
{
g_source_remove(m_timeout_tag);
m_timeout_tag = 0;
}
}
core::Signal<> m_timeout;
const std::shared_ptr<Clock>& m_clock;
guint m_timeout_tag = 0;
DateTime m_wakeup_time;
};
/***
****
***/
MainloopWakeupTimer::MainloopWakeupTimer(const std::shared_ptr<Clock>& clock):
p(new Impl(clock))
{
}
MainloopWakeupTimer::~MainloopWakeupTimer()
{
}
void MainloopWakeupTimer::set_wakeup_time(const DateTime& d)
{
p->set_wakeup_time(d);
}
core::Signal<>& MainloopWakeupTimer::timeout()
{
return p->timeout();
}
/***
****
***/
} // namespace datetime
} // namespace indicator
} // namespace ayatana
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