Each of the 16 toolbar buttons can have its own option. Just like we called the functions related to the toolbar buttons dynamically, we will again call methods to display options for the top bar dynamically.
So we decide that the method for handling the top bar options would be named by appending the string _options to the existing method.
Suppose we want to display the options for the draw_line method, it would be defined in the method called draw_line_options. Similarly, we have to define methods such as draw_arc_options, draw_star_options, and others.
We achieve this dynamic call in the display_options_in_the_top_bar method as follows (see code 6.06.py):
def display_options_in_the_top_bar(self): ...
