/****************************************************************************
**
** Copyright (C) 2012 Research In Motion <blackberry-qt@qnx.com>
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** This file is part of the QtGui module of the Qt Toolkit.
**
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#include "qeventdispatcher_blackberry_qpa_p.h"

#include "qapplication_p.h"

#include <QWindowSystemInterface>

QT_BEGIN_NAMESPACE

static bool sendWindowSystemEvents(QAbstractEventDispatcher *eventDispatcher, QEventLoop::ProcessEventsFlags flags)
{
    int nevents = 0;

    // handle gui and posted events
    QCoreApplication::sendPostedEvents();

    while (true) {
        QWindowSystemInterfacePrivate::WindowSystemEvent *event;
        if (!(flags & QEventLoop::ExcludeUserInputEvents)
            && QWindowSystemInterfacePrivate::windowSystemEventsQueued() > 0) {
            // process a pending user input event
            event = QWindowSystemInterfacePrivate::getWindowSystemEvent();
            if (!event)
                break;
        } else {
            break;
        }

        if (eventDispatcher->filterEvent(event)) {
            delete event;
            continue;
        }

        nevents++;

        QApplicationPrivate::processWindowSystemEvent(event);
        delete event;
    }

    return (nevents > 0);
}

QEventDispatcherBlackberryQPA::QEventDispatcherBlackberryQPA(QObject *parent)
    : QEventDispatcherBlackberry(parent)
{
}

QEventDispatcherBlackberryQPA::~QEventDispatcherBlackberryQPA()
{
}

bool QEventDispatcherBlackberryQPA::processEvents(QEventLoop::ProcessEventsFlags flags)
{
    bool didSendEvents = sendWindowSystemEvents(this, flags);

    if (QEventDispatcherBlackberry::processEvents(flags))
        return true;

    return didSendEvents;
}

bool QEventDispatcherBlackberryQPA::hasPendingEvents()
{
    return QEventDispatcherBlackberry::hasPendingEvents() || QWindowSystemInterfacePrivate::windowSystemEventsQueued();
}

void QEventDispatcherBlackberryQPA::flush()
{
    if (qApp)
        qApp->sendPostedEvents();
}

QT_END_NAMESPACE