@Override
    public void mouseEntered(MouseEvent e) 
    {
        if(e.getSource().equals(btnStation) || e.getSource().equals(btnSortCentreEntrance) || e.getSource().equals(btnSortCentreExit) || e.getSource().equals(btnJunctionPoint) || e.getSource().equals(btnConveyor))
        {
            if(!m_currentlyAdding)
                this.setCursor(new Cursor(Cursor.HAND_CURSOR));
        }
        
        // La fonction spaceOccupied retourne vrai si il y a un objet à la place ou on désire cliquer sur le plan
        if(m_sortCentre.SpaceOccupied(e.getPoint()))
        {
            this.setCursor(new Cursor(Cursor.HAND_CURSOR));
        }
    }