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#ifndef QSENSORMANAGER_H
#define QSENSORMANAGER_H

#include "qsensor.h"

QT_BEGIN_NAMESPACE

class QSensorBackend;
class QSensorBackendFactory;
class QSensorPluginInterface;

typedef QSensorPluginInterface *(*CreatePluginFunc)();

class Q_SENSORS_EXPORT QSensorManager
{
public:
    // Register a backend (call this from a plugin)
    static void registerBackend(const QByteArray &type, const QByteArray &identifier, QSensorBackendFactory *factory);
    static void unregisterBackend(const QByteArray &type, const QByteArray &identifier);

    static bool isBackendRegistered(const QByteArray &type, const QByteArray &identifier);

    // Create a backend (uses the type and identifier set in the sensor)
    static QSensorBackend *createBackend(QSensor *sensor);

    // For static plugins
    static void registerStaticPlugin(CreatePluginFunc func);
};

class Q_SENSORS_EXPORT QSensorBackendFactory
{
public:
    virtual QSensorBackend *createBackend(QSensor *sensor) = 0;
protected:
    ~QSensorBackendFactory() {}
};

// The default is for legacy static plugins
// This will change to Qt-style static plugins in 1.3
#define REGISTER_STATIC_PLUGIN(pluginname) \
        REGISTER_STATIC_PLUGIN_V1(pluginname)

// Legacy static plugins have their own registration methods.
// They can only register types. They cannot use the changes interface.
#define REGISTER_STATIC_PLUGIN_V1(pluginname) \
    static QSensorPluginInterface *create_static_plugin_ ## pluginname()\
    {\
        return new pluginname;\
    }\
    static bool side_effect_sensor_backend_ ## pluginname ()\
    {\
        QSensorManager::registerStaticPlugin(create_static_plugin_ ## pluginname);\
        return false;\
    }\
    /* This assignment calls the function above */\
    static bool dummy_sensor_backend_ ## pluginname = side_effect_sensor_backend_ ## pluginname();

// Qt-style static plugins use macros from Qt.
// They are handled just like regular plugins.
#define REGISTER_STATIC_PLUGIN_V2(pluginname) \
    QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##pluginname() Q_PLUGIN_INSTANCE(pluginname)\
    Q_IMPORT_PLUGIN(pluginname)

QT_END_NAMESPACE

#endif