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/****************************************************************************
**
** Copyright (C) 2011 - 2012 Research In Motion <blackberry-qt@qnx.com>
** Contact: http://www.qt-project.org/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser 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 will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** 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 met:
** http://www.gnu.org/copyleft/gpl.html.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//#define QBBNAVIGATOREVENTNOTIFIER_DEBUG
#include "qbbnavigatoreventnotifier.h"
#include "qbbnavigatoreventhandler.h"
#include <QtCore/private/qcore_unix_p.h>
#include <QByteArray>
#include <QList>
#include <QDebug>
#include <QSocketNotifier>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#define NAV_CONTROL_PATH "/pps/services/navigator/control"
#define PPS_BUFFER_SIZE 4096
QBBNavigatorEventNotifier::QBBNavigatorEventNotifier(QBBNavigatorEventHandler *eventHandler, QObject *parent)
: QObject(parent),
mEventHandler(eventHandler),
mFd(-1),
mReadNotifier(0)
{
}
QBBNavigatorEventNotifier::~QBBNavigatorEventNotifier()
{
delete mReadNotifier;
if (mFd != -1)
qt_safe_close(mFd);
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "QBB: navigator event notifier stopped";
#endif
}
void QBBNavigatorEventNotifier::start()
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "QBB: navigator event notifier started";
#endif
// open connection to navigator
errno = 0;
mFd = qt_safe_open(NAV_CONTROL_PATH, O_RDWR);
if (mFd == -1) {
qWarning("QBB: failed to open navigator pps, errno=%d", errno);
return;
}
mReadNotifier = new QSocketNotifier(mFd, QSocketNotifier::Read);
connect(mReadNotifier, SIGNAL(activated(int)), this, SLOT(readData()));
}
void QBBNavigatorEventNotifier::parsePPS(const QByteArray &ppsData, QByteArray &msg, QByteArray &dat, QByteArray &id)
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: data=" << ppsData;
#endif
// tokenize pps data into lines
QList<QByteArray> lines = ppsData.split('\n');
// validate pps object
if (lines.size() == 0 || lines.at(0) != "@control")
qFatal("QBB: unrecognized pps object, data=%s", ppsData.constData());
// parse pps object attributes and extract values
for (int i = 1; i < lines.size(); i++) {
// tokenize current attribute
const QByteArray &attr = lines.at(i);
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: attr=" << attr;
#endif
int firstColon = attr.indexOf(':');
if (firstColon == -1) {
// abort - malformed attribute
continue;
}
int secondColon = attr.indexOf(':', firstColon + 1);
if (secondColon == -1) {
// abort - malformed attribute
continue;
}
QByteArray key = attr.left(firstColon);
QByteArray value = attr.mid(secondColon + 1);
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: key=" << key;
qDebug() << "PPS: val=" << value;
#endif
// save attribute value
if (key == "msg")
msg = value;
else if (key == "dat")
dat = value;
else if (key == "id")
id = value;
else
qFatal("QBB: unrecognized pps attribute, attr=%s", key.constData());
}
}
void QBBNavigatorEventNotifier::replyPPS(const QByteArray &res, const QByteArray &id, const QByteArray &dat)
{
// construct pps message
QByteArray ppsData = "res::";
ppsData += res;
ppsData += "\nid::";
ppsData += id;
if (!dat.isEmpty()) {
ppsData += "\ndat::";
ppsData += dat;
}
ppsData += "\n";
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS reply=" << ppsData;
#endif
// send pps message to navigator
errno = 0;
int bytes = write(mFd, ppsData.constData(), ppsData.size());
if (bytes == -1)
qFatal("QBB: failed to write navigator pps, errno=%d", errno);
}
void QBBNavigatorEventNotifier::handleMessage(const QByteArray &msg, const QByteArray &dat, const QByteArray &id)
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: msg=" << msg << ", dat=" << dat << ", id=" << id;
#endif
// check message type
if (msg == "orientationCheck") {
const bool result = mEventHandler->handleOrientationCheck(dat.toInt());
replyPPS(msg, id, result ? "true": "false");
} else if (msg == "orientation") {
mEventHandler->handleOrientationChange(dat.toInt());
replyPPS(msg, id, "");
} else if (msg == "SWIPE_DOWN") {
mEventHandler->handleSwipeDown();
} else if (msg == "exit") {
mEventHandler->handleExit();
} else if (msg == "windowActive") {
mEventHandler->handleWindowGroupActivated(dat);
} else if (msg == "windowInactive") {
mEventHandler->handleWindowGroupDeactivated(dat);
}
}
void QBBNavigatorEventNotifier::readData()
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "QBB: reading navigator data";
#endif
// allocate buffer for pps data
char buffer[PPS_BUFFER_SIZE];
// attempt to read pps data
errno = 0;
int bytes = qt_safe_read(mFd, buffer, PPS_BUFFER_SIZE - 1);
if (bytes == -1)
qFatal("QBB: failed to read navigator pps, errno=%d", errno);
// check if pps data was received
if (bytes > 0) {
// ensure data is null terminated
buffer[bytes] = '\0';
// process received message
QByteArray ppsData(buffer);
QByteArray msg;
QByteArray dat;
QByteArray id;
parsePPS(ppsData, msg, dat, id);
handleMessage(msg, dat, id);
}
}
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