# Movie Chooser 2
# Demonstrates radio buttons

from tkinter import *

class Application(Frame):
    """ GUI Application for favorite movie type. """
    def __init__(self, master):
        """ Initialize Frame. """
        super(Application, self).__init__(master)  
        self.grid()
        self.create_widgets()

    def create_widgets(self):
        """ Create widgets for movie type choices. """
        # create description label
        Label(self,
              text = "Choose your favorite type of movie"
              ).grid(row = 0, column = 0, sticky = W)

        # create instruction label
        Label(self,
              text = "Select one:"
              ).grid(row = 1, column = 0, sticky = W)

        # create variable for single, favorite type of movie
        self.favorite = StringVar()
        self.favorite.set(None)

        # create Comedy radio button
        Radiobutton(self,
                    text = "Comedy",
                    variable = self.favorite,
                    value = "comedy.",
                    command = self.update_text
                    ).grid(row = 2, column = 0, sticky = W)

        # create Drama radio button
        Radiobutton(self,
                    text = "Drama",
                    variable = self.favorite,
                    value = "drama.",
                    command = self.update_text
                    ).grid(row = 3, column = 0, sticky = W)

        # create Romance radio button
        Radiobutton(self,
                    text = "Romance",
                    variable = self.favorite,
                    value = "romance.",
                    command = self.update_text
                    ).grid(row = 4, column = 0, sticky = W)

        # create text field to display result
        self.results_txt = Text(self, width = 40, height = 5, wrap = WORD)
        self.results_txt.grid(row = 5, column = 0, columnspan = 3)

    def update_text(self):
        """ Update text area and display user's favorite movie type. """
        message = "Your favorite type of movie is "
        message += self.favorite.get()
            
        self.results_txt.delete(0.0, END)
        self.results_txt.insert(0.0, message)

# main
root = Tk()
root.title("Movie Chooser 2")
app = Application(root)
root.mainloop()