QVariant CommentsModel::data (const QModelIndex& index, int role) const
    {
        if (!index.isValid ())
            return QVariant ();

        LJComment *comment = static_cast<LJComment*> (index.internalPointer ());

        switch (role)
        {
        case CRParentTalkID:
            return comment->GetParentTalkID ();
        case CRPosterID:
            return comment->GetPosterID ();
        case CRState:
            return comment->GetState ();
        case CRSubject:
            return comment->GetSubject ();
        case CRBody:
            return comment->GetBody ();
        case CRLevel:
            return comment->GetTempLevel () % 4;
        case CRDTalkID:
            return comment->GetDTalkID ();
        case CRPosterName:
            return comment->GetPosterName ();
        case CRPostDate:
            return comment->GetPostDate ();
        case CRIsShown:
            return comment->IsShown ();
        case CRIsLoaded:
            return comment->IsLoaded ();
        case CRUserPicUrl:
            return comment->GetUserPicUrl ();
        case CRPrivileges:
            return static_cast<int> (comment->GetPrivileges ());
        case CRChildrenCount:
            return comment->GetChildrenCount ();
        case CRComment:
            return QVariant::fromValue (parent (index).internalPointer ());
        default:
            return QVariant ();
        }

        return QVariant ();
    }

    QHash<int, QByteArray> CommentsModel::roleNames () const
    {
        QHash<int, QByteArray> roles;
        roles [CRParentTalkID] = "commentParentTalkID";
        roles [CRPosterID] = "commentPosterID";
        roles [CRState] = "commentState";
        roles [CRSubject] = "commentSubject";
        roles [CRBody] = "commentBody";
        roles [CRLevel] = "commentLevel";
        roles [CRDTalkID] = "commentDTalkID";
        roles [CRPosterName] = "commentPosterName";
        roles [CRPostDate] = "commentPostDate";
        roles [CRIsShown] = "commentIsShown";
        roles [CRIsLoaded] = "commentIsLoaded";
        roles [CRUserPicUrl] = "commentUserPicUrl";
        roles [CRPrivileges] = "commentPrivileges";
        roles [CRChildrenCount] = "commentChildrenCount";

        return roles;
    }

                Button {
                    anchors.horizontalCenter: parent.horizontalCenter

                    visible: commentChildrenCount
                    //enabled: commentChildrenCount != 0
                    text: qsTr ("Load comments (%1)").arg (commentChildrenCount)

                    onClicked: {
                        console.log ("condition:", commentChildrenCount)
                        console.log ("visible:", visible)
                        mnemosyManager.loadComment (commentDTalkID)
                    }
                }