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#include "qstylefactory.h"
#include "qstyleplugin.h"
#include "private/qfactoryloader_p.h"
#include "qmutex.h"

#include "qapplication.h"
#include "qwindowsstyle_p.h"
#ifndef QT_NO_STYLE_FUSION
#include "qfusionstyle_p.h"
#ifndef QT_NO_STYLE_ANDROID
#include "qandroidstyle_p.h"
#endif
#endif
#ifndef QT_NO_STYLE_WINDOWSXP
#include "qwindowsxpstyle_p.h"
#endif
#ifndef QT_NO_STYLE_WINDOWSVISTA
#include "qwindowsvistastyle_p.h"
#endif

#if !defined(QT_NO_STYLE_MAC) && defined(Q_OS_MAC)
#  include "qmacstyle_mac_p.h"
#endif

QT_BEGIN_NAMESPACE

Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
    (QStyleFactoryInterface_iid, QLatin1String("/styles"), Qt::CaseInsensitive))

/*!
    \class QStyleFactory
    \brief The QStyleFactory class creates QStyle objects.

    \ingroup appearance
    \inmodule QtWidgets

    The QStyle class is an abstract base class that encapsulates the
    look and feel of a GUI. QStyleFactory creates a QStyle object
    using the create() function and a key identifying the style. The
    styles are either built-in or dynamically loaded from a style
    plugin (see QStylePlugin).

    The valid keys can be retrieved using the keys()
    function. Typically they include "windows" and "fusion".
    Depending on the platform, "windowsxp", "windowsvista"
    and "macintosh" may be available.
    Note that keys are case insensitive.

    \sa QStyle
*/

/*!
    Creates and returns a QStyle object that matches the given \a key, or
    returns 0 if no matching style is found.

    Both built-in styles and styles from style plugins are queried for a
    matching style.

    \note The keys used are case insensitive.

    \sa keys()
*/
QStyle *QStyleFactory::create(const QString& key)
{
    QStyle *ret = 0;
    QString style = key.toLower();
#ifndef QT_NO_STYLE_WINDOWS
    if (style == QLatin1String("windows"))
        ret = new QWindowsStyle;
    else
#endif
#ifndef QT_NO_STYLE_WINDOWSXP
    if (style == QLatin1String("windowsxp"))
        ret = new QWindowsXPStyle;
    else
#endif
#ifndef QT_NO_STYLE_WINDOWSVISTA
    if (style == QLatin1String("windowsvista"))
        ret = new QWindowsVistaStyle;
    else
#endif
#ifndef QT_NO_STYLE_FUSION
    if (style == QLatin1String("fusion"))
        ret = new QFusionStyle;
    else
#endif
#ifndef QT_NO_STYLE_ANDROID
    if (style == QLatin1String("android"))
        ret = new QAndroidStyle;
    else
#endif
#ifndef QT_NO_STYLE_MAC
    if (style.startsWith(QLatin1String("macintosh"))) {
        ret = new QMacStyle;
#  if 0 // Used to be included in Qt4 for Q_WS_MAC
        if (style == QLatin1String("macintosh"))
            style += QLatin1String(" (aqua)");
#  endif
    } else
#endif
    { } // Keep these here - they make the #ifdefery above work
    if (!ret)
        ret = qLoadPlugin<QStyle, QStylePlugin>(loader(), style);
    if(ret)
        ret->setObjectName(style);
    return ret;
}

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

    \sa create()
*/
QStringList QStyleFactory::keys()
{
    QStringList list;
    typedef QMultiMap<int, QString> PluginKeyMap;

    const PluginKeyMap keyMap = loader()->keyMap();
    const PluginKeyMap::const_iterator cend = keyMap.constEnd();
    for (PluginKeyMap::const_iterator it = keyMap.constBegin(); it != cend; ++it)
        list.append(it.value());
#ifndef QT_NO_STYLE_WINDOWS
    if (!list.contains(QLatin1String("Windows")))
        list << QLatin1String("Windows");
#endif
#ifndef QT_NO_STYLE_WINDOWSXP
    if (!list.contains(QLatin1String("WindowsXP")) &&
        (QSysInfo::WindowsVersion >= QSysInfo::WV_XP && (QSysInfo::WindowsVersion & QSysInfo::WV_NT_based)))
        list << QLatin1String("WindowsXP");
#endif
#ifndef QT_NO_STYLE_WINDOWSVISTA
    if (!list.contains(QLatin1String("WindowsVista")) &&
        (QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA && (QSysInfo::WindowsVersion & QSysInfo::WV_NT_based)))
        list << QLatin1String("WindowsVista");
#endif
#ifndef QT_NO_STYLE_ANDROID
    if (!list.contains(QLatin1String("Android")))
        list << QLatin1String("Android");
#endif
#ifndef QT_NO_STYLE_FUSION
    if (!list.contains(QLatin1String("Fusion")))
        list << QLatin1String("Fusion");
#endif
#ifndef QT_NO_STYLE_MAC
    QString mstyle = QLatin1String("Macintosh");
# if 0 // Used to be included in Qt4 for Q_WS_MAC
    mstyle += QLatin1String(" (aqua)");
# endif
    if (!list.contains(mstyle))
        list << mstyle;
#endif
    return list;
}

QT_END_NAMESPACE