ZMessageQueue.cpp

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/*
 * Zuble - A run-time system for QML/Javascript applications
 * Copyright (C) 2015 Bob Dinitto
 *
 * Filename:   ZMessageQueue.cpp
 * Created on: 12/29/2015
 * Author:     Bob Dinitto
 *
 * Zuble is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include "ZMessageQueue.h"
#include <QtQml>

namespace Zbl
{

ZMessageQueue::ZMessageQueue(QObject *parent) :
    QObject(parent)
{
}

void ZMessageQueue::registerType()
{
    //ZBL_REGISTER_LOGGED_OBJECT

    qmlRegisterType<ZMessageQueue>("org.zuble.qml", 1, 0, "ZMessageQueue");
}

void ZMessageQueue::sendMessage(QVariant message)
{
    m_q.enqueue(message);

    sendAvailableSignal();
}


void ZMessageQueue::queueMessage(QVariant message)
{
    m_q.enqueue(message);

    QMetaObject::invokeMethod(this, "sendAvailableSignal",
                              Qt::QueuedConnection);
}

QVariant ZMessageQueue::dequeueMessage()
{
    if(m_q.count() > 0)
        return m_q.dequeue();
    else
        return QVariant();
}

QVariant ZMessageQueue::peekMessage()
{
    if(m_q.count() > 0)
        return m_q.head();
    else
        return QVariant();
}

void ZMessageQueue::sendAvailableSignal()
{
    emit messageAvailable();
}

int ZMessageQueue::getCount()
{
    return m_q.count();
}

bool ZMessageQueue::isEmpty()
{
    return m_q.count() == 0;
}


} // Zbl