Peter M. Groen / openbr

#include "openbr_internal.h"

namespace br
{

/*!
 * \ingroup transforms
 * \brief Retains only the values for the keys listed, to reduce template size
 * \author Scott Klum \cite sklum
 */
class RetainTransform : public UntrainableTransform
{
    Q_OBJECT
    Q_PROPERTY(QStringList keys READ get_keys WRITE set_keys RESET reset_keys STORED false)
    BR_PROPERTY(QStringList, keys, QStringList())

    void project(const Template &src, Template &dst) const
    {
        dst = src;
        foreach(const QString& localKey, dst.file.localKeys()) {
            if (!keys.contains(localKey)) dst.file.remove(localKey);
        }
    }
};

BR_REGISTER(Transform, RetainTransform)

} // namespace br

#include "template.moc"