src/sensors/qsensorpluginloader.cpp
changeset 0 876b1a06bc25
child 5 603d3f8b6302
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-1:000000000000 0:876b1a06bc25
       
     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the Qt Mobility Components.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "qsensorpluginloader_p.h"
       
    43 #include <QtCore/qcoreapplication.h>
       
    44 #include <QtCore/qdir.h>
       
    45 #include <QtCore/qdebug.h>
       
    46 
       
    47 #include "qsensorplugin.h"
       
    48 #include "qmobilitypluginsearch.h"
       
    49 
       
    50 QTM_BEGIN_NAMESPACE
       
    51 
       
    52 QSensorPluginLoader::QSensorPluginLoader(const char *iid, const QString &location)
       
    53     : m_iid(iid)
       
    54 {
       
    55     m_location = location + QLatin1String("/");
       
    56     load();
       
    57 }
       
    58 
       
    59 QSensorPluginLoader::~QSensorPluginLoader()
       
    60 {
       
    61     Q_FOREACH (QPluginLoader *loader, m_loaders) {
       
    62         bool ok = loader->unload();
       
    63         if (!ok) qWarning() << "Cannot unload" << loader->fileName();
       
    64         delete loader;
       
    65     }
       
    66 }
       
    67 
       
    68 void QSensorPluginLoader::load()
       
    69 {
       
    70     if (!m_plugins.isEmpty())
       
    71         return;
       
    72 
       
    73     QStringList plugins;
       
    74     plugins = mobilityPlugins(QLatin1String("sensors"));
       
    75 
       
    76     /* Now discover the dynamic plugins */
       
    77     for (int i=0; i < plugins.count(); i++) {
       
    78         QPluginLoader *loader = new QPluginLoader(plugins.at(i));
       
    79 
       
    80         QObject *o = loader->instance();
       
    81         if (o != 0 && o->qt_metacast(m_iid) != 0) {
       
    82             QSensorPluginInterface *p = qobject_cast<QSensorPluginInterface*>(o);
       
    83             if (p != 0) {
       
    84                 m_plugins << p;
       
    85                 m_loaders << loader;
       
    86             } else {
       
    87                 loader->unload();
       
    88                 delete loader;
       
    89             }
       
    90 
       
    91             continue;
       
    92         } else {
       
    93             qWarning() << "QSensorPluginLoader: Failed to load plugin: " << plugins.at(i) << loader->errorString();
       
    94         }
       
    95         delete o;
       
    96         loader->unload();
       
    97         delete loader;
       
    98     }
       
    99 }
       
   100 
       
   101 QTM_END_NAMESPACE
       
   102