Here is code (only that, what in my opinion is important in this case)

@
import QtQuick.Layouts 1.0
import QtQuick 2.4
import QtQuick.Controls 1.3
import QtQuick.Window 2.2
import QtQuick.Dialogs 1.2

Rectangle
{
ListModel
{
id: usersModel
}

TabView 
{
    Tab 
    {
        title: "1"
        RowLayout
        {
            ColumnLayout
            {
                TableView
                {
                    onClicked: customID.color = "#FFFFFF"
                    TableViewColumn
                    {
                    }
                }
            }
            Rectangle 
            {
                TabView
                {
                    Tab
                    {
                        title: "A"
                        Rectangle
                        {
                            id: customID
                            color: "#00000000"
                        }
                    }
                }
            }
        }
    }
}

}
@