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#ifndef SYMBIANSETTINGSLAYER_H
#define SYMBIANSETTINGSLAYER_H

#include "qvaluespace_p.h"
#include "qvaluespacepublisher.h"

#include <QHash>
#include <QSet>
#include <QByteArray>
#include <QMultiMap>

#ifdef __WINS__
    #include "pathmapper_symbian_p.h"
#else
    #include "pathmapper_proxy_symbian_p.h"
#endif

#include "xqsettingsmanager.h"

QTM_BEGIN_NAMESPACE

class SymbianSettingsLayer : public QAbstractValueSpaceLayer
{
    Q_OBJECT

public:
    SymbianSettingsLayer();
    virtual ~SymbianSettingsLayer();

protected:
    /*virtual*/ QString name();

    /*virtual*/ bool startup(Type type);

    /*virtual*/ QUuid id();
    /*virtual*/ unsigned int order();

    /*virtual*/ Handle item(Handle parent, const QString &subPath);
    /*virtual*/ void removeHandle(Handle handle);
    /*virtual*/ void setProperty(Handle handle, Properties properties);

    /*virtual*/ bool value(Handle handle, QVariant *data);
    /*virtual*/ bool value(Handle handle, const QString &subPath, QVariant *data);
    /*virtual*/ QSet<QString> children(Handle handle);

    /*virtual*/ QValueSpace::LayerOptions layerOptions() const;

    /* QValueSpaceSubscriber functions */
    /*virtual*/ bool supportsInterestNotification() const;
    /*virtual*/ bool notifyInterest(Handle handle, bool interested);

    /* QValueSpacePublisher functions */
    /*virtual*/ bool setValue(QValueSpacePublisher *creator, Handle handle,
                              const QString &subPath, const QVariant &value);
    /*virtual*/ bool removeValue(QValueSpacePublisher *creator, Handle handle,
                                 const QString &subPath);
    /*virtual*/ bool removeSubTree(QValueSpacePublisher *creator, Handle handle);
    /*virtual*/ void addWatch(QValueSpacePublisher *creator, Handle handle);
    /*virtual*/ void removeWatches(QValueSpacePublisher *creator, Handle parent);
    /*virtual*/ void sync();

public:
    static SymbianSettingsLayer *instance();

private:
    struct SymbianSettingsHandle {
        SymbianSettingsHandle(const QString &p)
        :   path(p), refCount(1)
        {
        }

        QString path;
        unsigned int refCount;
    };

    QHash<QString, SymbianSettingsHandle *> m_handles;

    SymbianSettingsHandle *symbianSettingsHandle(Handle handle)
    {
        if (handle == InvalidHandle)
            return 0;

        SymbianSettingsHandle *h = reinterpret_cast<SymbianSettingsHandle *>(handle);
        if (m_handles.values().contains(h))
            return h;

        return 0;
    }

private slots:
    void notifyChange(const XQSettingsKey& key);

private:    //data
    PathMapper m_pathMapper;
    XQSettingsManager m_settingsManager;
    QHash<QByteArray, SymbianSettingsHandle *> m_monitoringHandles;
    QSet<QString> m_monitoringPaths;
};

QTM_END_NAMESPACE

#endif //SYMBIANSETTINGSLAYER_H