/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
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** This file is part of the QtGui module of the Qt Toolkit.
**
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** GNU Lesser General Public License Usage
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** 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 will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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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
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** file. Please review the following information to ensure the GNU General
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** conditions contained in a signed written agreement between you and Nokia.
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** $QT_END_LICENSE$
**
****************************************************************************/

#include <qpa/qplatformthemefactory_p.h>
#include <qpa/qplatformthemeplugin.h>
#include <QDir>
#include "private/qfactoryloader_p.h"
#include "qmutex.h"

#include "qguiapplication.h"
#include "qdebug.h"

QT_BEGIN_NAMESPACE

#ifndef QT_NO_LIBRARY
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
    (QPlatformThemeFactoryInterface_iid, QLatin1String("/platformthemes"), Qt::CaseInsensitive))
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, directLoader,
                          (QPlatformThemeFactoryInterface_iid, QLatin1String(""), Qt::CaseInsensitive))
#endif

QPlatformTheme *QPlatformThemeFactory::create(const QString& key, const QString &platformPluginPath)
{
    QStringList paramList = key.split(QLatin1Char(':'));
    const QString platform = paramList.takeFirst().toLower();

#ifndef QT_NO_LIBRARY
    // Try loading the plugin from platformPluginPath first:
    if (!platformPluginPath.isEmpty()) {
        QCoreApplication::addLibraryPath(platformPluginPath);
        if (QPlatformTheme *ret = qLoadPlugin1<QPlatformTheme, QPlatformThemePlugin>(directLoader(), platform, paramList))
            return ret;
    }
    if (QPlatformTheme *ret = qLoadPlugin1<QPlatformTheme, QPlatformThemePlugin>(loader(), platform, paramList))
           return ret;
#endif
    return 0;
}

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

    \sa create()
*/
QStringList QPlatformThemeFactory::keys(const QString &platformPluginPath)
{
#ifndef QT_NO_LIBRARY
    QStringList list;

    if (!platformPluginPath.isEmpty()) {
        QCoreApplication::addLibraryPath(platformPluginPath);
        list += directLoader()->keyMap().values();
        if (!list.isEmpty()) {
            const QString postFix = QStringLiteral(" (from ")
                    + QDir::toNativeSeparators(platformPluginPath)
                    + QLatin1Char(')');
            const QStringList::iterator end = list.end();
            for (QStringList::iterator it = list.begin(); it != end; ++it)
                (*it).append(postFix);
        }
    }
    list += loader()->keyMap().values();
    return list;
#else
    return QStringList();
#endif
}

QT_END_NAMESPACE