qtmobility/src/sensors/qsensorpluginloader.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 11 Jun 2010 14:26:25 +0300
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Revision: 201021 Kit: 2010123
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qsensorpluginloader_p.h"
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#include <QtCore/qcoreapplication.h>
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#include <QtCore/qdir.h>
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#include <QtCore/qdebug.h>
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#include "qsensorplugin.h"
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#include "qmobilitypluginsearch.h"
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QTM_BEGIN_NAMESPACE
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QSensorPluginLoader::QSensorPluginLoader(const char *iid, const QString &location)
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    : m_iid(iid)
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{
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    m_location = location + QLatin1String("/");
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    load();
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}
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QSensorPluginLoader::~QSensorPluginLoader()
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{
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    Q_FOREACH (QPluginLoader *loader, m_loaders) {
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        bool ok = loader->unload();
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        if (!ok) qWarning() << "Cannot unload" << loader->fileName();
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        delete loader;
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    }
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}
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void QSensorPluginLoader::load()
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{
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    if (!m_plugins.isEmpty())
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        return;
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    QStringList plugins;
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    plugins = mobilityPlugins(QLatin1String("sensors"));
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    /* Now discover the dynamic plugins */
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    for (int i=0; i < plugins.count(); i++) {
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        QPluginLoader *loader = new QPluginLoader(plugins.at(i));
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        QObject *o = loader->instance();
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        if (o != 0 && o->qt_metacast(m_iid) != 0) {
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            QSensorPluginInterface *p = qobject_cast<QSensorPluginInterface*>(o);
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            if (p != 0) {
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                m_plugins << p;
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                m_loaders << loader;
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            } else {
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                loader->unload();
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                delete loader;
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            }
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            continue;
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        } else {
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            qWarning() << "QSensorPluginLoader: Failed to load plugin: " << plugins.at(i) << loader->errorString();
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        }
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        delete o;
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        loader->unload();
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        delete loader;
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    }
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}
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QTM_END_NAMESPACE
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