/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the Qt Mobility Components.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, 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

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**

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** rights.  These rights are described in the Nokia Qt LGPL Exception

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

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** $QT_END_LICENSE$

**

****************************************************************************/

#include "qmediapluginloader_p.h"

#include <QtCore/qcoreapplication.h>

#include <QtCore/qpluginloader.h>

#include <QtCore/qdir.h>

#include <QtCore/qdebug.h>

#include "qmediaserviceproviderplugin.h"

#include "qmobilitypluginsearch.h"

QT_BEGIN_NAMESPACE

typedef QMap<QString,QObjectList> ObjectListMap;

Q_GLOBAL_STATIC(ObjectListMap, staticMediaPlugins);

QMediaPluginLoader::QMediaPluginLoader(const char *iid, const QString &location, Qt::CaseSensitivity):

    m_iid(iid)

{

    m_location = location + "/";

    load();

}

QStringList QMediaPluginLoader::keys() const

{

    return m_instances.keys();

}

QObject* QMediaPluginLoader::instance(QString const &key)

{

    return m_instances.value(key);

}

QList<QObject*> QMediaPluginLoader::instances(QString const &key)

{

    return m_instances.values(key);

}

//to be used for testing purposes only

void QMediaPluginLoader::setStaticPlugins(const QString &location, const QObjectList& objects)

{

    staticMediaPlugins()->insert(location+"/", objects);

}

void QMediaPluginLoader::load()

{

    if (!m_instances.isEmpty())

        return;

    if (staticMediaPlugins() && staticMediaPlugins()->contains(m_location)) {

        foreach(QObject *o, staticMediaPlugins()->value(m_location)) {

            if (o != 0 && o->qt_metacast(m_iid) != 0) {

                QFactoryInterface* p = qobject_cast<QFactoryInterface*>(o);

                if (p != 0) {

                    foreach (QString const &key, p->keys())

                        m_instances.insertMulti(key, o);

                }

            }

        }

    } else {

        QStringList plugins = QTM_PREPEND_NAMESPACE(mobilityPlugins)(m_location);

        for (int i=0; i < plugins.count(); i++) {

            QPluginLoader   loader(plugins.at(i));

            QObject *o = loader.instance();

            if (o != 0 && o->qt_metacast(m_iid) != 0) {

                QFactoryInterface* p = qobject_cast<QFactoryInterface*>(o);

                if (p != 0) {

                    foreach (QString const &key, p->keys())

                        m_instances.insertMulti(key, o);

                }

                continue;

            } else {

                qWarning() << "QMediaPluginLoader: Failed to load plugin: " << plugins.at(i) << loader.errorString();

            }

            delete o;

            loader.unload();

        }

    }

}

QT_END_NAMESPACE