ladybird/Libraries/LibCore/Timer.cpp

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <LibCore/Timer.h>

namespace Core {

Timer::Timer(Object* parent)
    : Object(parent)
{
}

Timer::Timer(int interval, Function<void()>&& timeout_handler, Object* parent)
    : Object(parent)
    , on_timeout(move(timeout_handler))
{
    start(interval);
}

Timer::~Timer()
{
}

void Timer::start()
{
    start(m_interval);
}

void Timer::start(int interval)
{
    if (m_active)
        return;
    m_interval = interval;
    start_timer(interval);
    m_active = true;
}

void Timer::restart(int interval)
{
    if (m_active)
        stop();
    start(interval);
}

void Timer::stop()
{
    if (!m_active)
        return;
    stop_timer();
    m_active = false;
}

void Timer::timer_event(TimerEvent&)
{
    if (m_single_shot)
        stop();
    else {
        if (m_interval_dirty) {
            stop();
            start(m_interval);
        }
    }

    if (on_timeout)
        on_timeout();
}

}