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** contained in the Technology Preview License Agreement accompanying

** this package.

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****************************************************************************/

#ifndef FEATURE_H

#define FEATURE_H

#include <QString>

#include <QStringList>

#include <QMap>

#include <QSet>

#include <QList>

QT_BEGIN_NAMESPACE

class Feature;

class FeaturePrivate

{

public:

    FeaturePrivate(const QString &k)

	: key(k), enabled(true), selectable(true) {};

    const QString key;

    QString section;

    QString title;

    QString description;

    QSet<Feature*> dependencies;

    QSet<Feature*> supports; // features who depends on this one

    QSet<Feature*> relations;

    bool enabled;

    bool selectable;

};

class Feature : public QObject

{

    Q_OBJECT    

public:

    static Feature* getInstance(const QString &key);

    static void clear();

public:

    QString key() const { return d->key; }

    void setTitle(const QString &title);

    QString title() const { return d->title; }

    void setSection(const QString &section);

    QString section() const { return d->section; }

    void setDescription(const QString &description);    

    QString description() const { return d->description; };

    void addRelation(const QString &key);

    void setRelations(const QStringList &keys);

    QList<Feature*> relations() const;    

    void addDependency(const QString &dependency);

    void setDependencies(const QStringList &dependencies);

    QList<Feature*> dependencies() const;

    QList<Feature*> supports() const;    

    QString getDocumentation() const;

    void setEnabled(bool on);

    bool enabled() const { return d->enabled; };

    bool selectable() const { return d->selectable; }

    QString toHtml() const;    

    ~Feature();    

signals:

    void changed();

private:

    Feature(const QString &key);

    void updateSelectable();

    static QMap<QString, Feature*> instances;

    FeaturePrivate *d;

};

QT_END_NAMESPACE

#endif // FEATURE_H