~indicator-applet-developers/indicator-datetime/trunk.15.04

/*

 * 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/planner-range.h>

namespace unity {

namespace indicator {

namespace datetime {

/***

****

***/

SimpleRangePlanner::SimpleRangePlanner(const std::shared_ptr<Engine>& engine,

                                       const std::shared_ptr<Timezone>& timezone):

    m_engine(engine),

    m_timezone(timezone),

    m_range(std::pair<DateTime,DateTime>(DateTime::NowLocal(), DateTime::NowLocal()))

{

    engine->changed().connect([this](){

        g_debug("RangePlanner %p rebuilding soon because Engine %p emitted 'changed' signal", this, m_engine.get());

        rebuild_soon();

    });

    m_timezone->timezone.changed().connect([this](const std::string& s){

        g_debug("RangePlanner %p rebuilding soon because the timezone changed to '%s'", this, s.c_str());

        rebuild_soon();

    });

    range().changed().connect([this](const std::pair<DateTime,DateTime>&){

        g_debug("rebuilding because the date range changed");

        rebuild_soon();

    });

}

SimpleRangePlanner::~SimpleRangePlanner()

{

    if (m_rebuild_tag)

        g_source_remove(m_rebuild_tag);

}

/***

****

***/

void SimpleRangePlanner::rebuild_now()

{

    const auto& r = range().get();

    auto on_appointments_fetched = [this](const std::vector<Appointment>& a){

        g_debug("RangePlanner %p got %zu appointments", this, a.size());

        appointments().set(a);

    };

    m_engine->get_appointments(r.first, r.second, *m_timezone.get(), on_appointments_fetched);

}

void SimpleRangePlanner::rebuild_soon()

{

    static const int ARBITRARY_BATCH_MSEC = 200;

    if (m_rebuild_tag == 0)

        m_rebuild_tag = g_timeout_add(ARBITRARY_BATCH_MSEC, rebuild_now_static, this);

}

gboolean SimpleRangePlanner::rebuild_now_static(gpointer gself)

{

    auto self = static_cast<SimpleRangePlanner*>(gself);

    self->m_rebuild_tag = 0;

    self->rebuild_now();

    return G_SOURCE_REMOVE;

}

/***

****

***/

core::Property<std::vector<Appointment>>& SimpleRangePlanner::appointments()

{

    return m_appointments;

}

core::Property<std::pair<DateTime,DateTime>>& SimpleRangePlanner::range()

{

    return m_range;

}

/***

****

***/

} // namespace datetime

} // namespace indicator

} // namespace unity