/****************************************************************************
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** This file is part of the QtGui module of the Qt Toolkit.
**
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** 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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** 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
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****************************************************************************/

#include "qplatformintegrationfactory_qpa_p.h"
#include <QPlatformIntegrationPlugin>
#include "private/qfactoryloader_p.h"
#include "qmutex.h"

#include "qapplication.h"
#include "qdebug.h"

QT_BEGIN_NAMESPACE

#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
    (QPlatformIntegrationFactoryInterface_iid, QLatin1String("/platforms"), Qt::CaseInsensitive))
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, directLoader,
                          (QPlatformIntegrationFactoryInterface_iid, QLatin1String(""), Qt::CaseInsensitive))
#endif

QPlatformIntegration *QPlatformIntegrationFactory::create(const QString& key, const QString &platformPluginPath)
{
    QPlatformIntegration *ret = 0;
    QStringList paramList = key.split(QLatin1Char(':'));
    QString platform = paramList.takeFirst().toLower();

#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
    // Try loading the plugin from platformPluginPath first:
    if (!platformPluginPath.isEmpty()) {
        QCoreApplication::addLibraryPath(platformPluginPath);
        if (QPlatformIntegrationFactoryInterface *factory =
            qobject_cast<QPlatformIntegrationFactoryInterface*>(directLoader()->instance(platform)))
            ret = factory->create(key, paramList);

        if (ret)
            return ret;
    }
    if (QPlatformIntegrationFactoryInterface *factory = qobject_cast<QPlatformIntegrationFactoryInterface*>(loader()->instance(platform)))
        ret = factory->create(platform, paramList);
#endif

    return ret;
}

/*!
    Returns the list of valid keys, i.e. the keys this factory can
    create styles for.

    \sa create()
*/
QStringList QPlatformIntegrationFactory::keys(const QString &platformPluginPath)
{
#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
    QStringList list;

    if (!platformPluginPath.isEmpty()) {
        QCoreApplication::addLibraryPath(platformPluginPath);
        foreach (const QString &key, directLoader()->keys()) {
            list += key + QString(QLatin1String(" (from %1)")).arg(platformPluginPath);
        }
    }

    list += loader()->keys();
#else
    QStringList list;
#endif
    return list;
}

QT_END_NAMESPACE