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.

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    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

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    36 **

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QPluginLoader>

    43 

    44 #include "qversitcontactpluginloader_p.h"

    45 #include "qmobilitypluginsearch.h"

    46 

    47 QTM_USE_NAMESPACE

    48 

    49 /*!

    50    A less-than function for factory indices (see QVersitContactHandlerFactory::index()).

    51    Positive values come first (ascendingly), then zero, then negative values (ascendingly).

    52  */

    53 bool factoryLessThan(QVersitContactHandlerFactory* a, QVersitContactHandlerFactory* b) {

    54     if ((a->index() > 0 && b->index() > 0)

    55             || (a->index() < 0 && b->index() < 0))

    56         // same sign

    57         return a->index() < b->index();

    58     else

    59         // a is zero

    60         // or b is zero

    61         // or opposite sign

    62         return b->index() < a->index();

    63 }

    64 

    65 QVersitContactPluginLoader* QVersitContactPluginLoader::mInstance = NULL;

    66 

    67 /*!

    68  * \class QVersitContactPluginLoader

    69  * This is a singleton class that loads Versit plugins for contacts processing

    70  */

    71 

    72 QVersitContactPluginLoader::QVersitContactPluginLoader()

    73 {

    74 }

    75 

    76 /*!

    77  * Returns the singleton instance of the QVersitContactPluginLoader.

    78  */

    79 QVersitContactPluginLoader* QVersitContactPluginLoader::instance()

    80 {

    81     if (!mInstance)

    82         mInstance = new QVersitContactPluginLoader;

    83     return mInstance;

    84 }

    85 

    86 void QVersitContactPluginLoader::loadPlugins() {

    87     QStringList plugins = mobilityPlugins(QLatin1String("versit"));

    88     if (plugins != mPluginPaths) {

    89         mPluginPaths = plugins;

    90 

    91         foreach (const QString& pluginPath, mPluginPaths) {

    92             QPluginLoader qpl(pluginPath);

    93             QObject* plugin = qpl.instance();

    94             QVersitContactHandlerFactory* contactPlugin =

    95                 qobject_cast<QVersitContactHandlerFactory*>(plugin);

    96             if (contactPlugin && !mLoadedFactories.contains(contactPlugin->name())) {

    97                 mLoadedFactories.insert(contactPlugin->name());

    98                 mContactHandlerFactories.append(contactPlugin);

    99             }

   100         }

   101         qSort(mContactHandlerFactories.begin(), mContactHandlerFactories.end(), factoryLessThan);

   102     }

   103 }

   104 

   105 /*!

   106  * Creates and returns handlers from the plugin.  If \a profile is the empty string, only handlers

   107  * with an empty profile list are returned.  If \a profile is nonempty, only handlers with either

   108  * an empty profile list or a profile list that contains the given \a profile are returned.

   109  *

   110  * The caller is responsible for deleting all returned handlers.

   111  */

   112 QList<QVersitContactHandler*> QVersitContactPluginLoader::createContactHandlers(const QString& profile)

   113 {

   114     loadPlugins();

   115 

   116     QList<QVersitContactHandler*> handlers;

   117     foreach (const QVersitContactHandlerFactory* factory, mContactHandlerFactories) {

   118         if (factory->profiles().isEmpty() ||

   119                 (!profile.isEmpty() && factory->profiles().contains(profile))) {

   120             QVersitContactHandler* handler = factory->createHandler();

   121             handlers.append(handler);

   122         }

   123     }

   124     return handlers;

   125 }