我需要了解模型/视图/控制器方法背后的概念以及如何以这种方式编写 GUI。这只是一个非常基本、简单的 GUI。有人可以向我解释如何使用 MVC 重写此代码吗？
from tkinter import *
class Application(Frame):
""" GUI application that creates a story based on user input. """
def __init__(self, master):
""" Initialize Frame. """
super(Application, self).__init__(master)
self.grid()
self.create_widgets()
def create_widgets(self):
""" Create widgets to get story information and to display story. """
# create instruction label
Label(self,
text = "Enter information for a new story"
).grid(row = 0, column = 0, columnspan = 2, sticky = W)
# create a label and text entry for the name of a person
Label(self,
text = "Person: "
).grid(row = 1, column = 0, sticky = W)
self.person_ent = Entry(self)
self.person_ent.grid(row = 1, column = 1, sticky = W)
# create a label and text entry for a plural noun
Label(self,
text = "Plural Noun:"
).grid(row = 2, column = 0, sticky = W)
self.noun_ent = Entry(self)
self.noun_ent.grid(row = 2, column = 1, sticky = W)
# create a label and text entry for a verb
Label(self,
text = "Verb:"
).grid(row = 3, column = 0, sticky = W)
self.verb_ent = Entry(self)
self.verb_ent.grid(row = 3, column = 1, sticky = W)
# create a label for adjectives check buttons
Label(self,
text = "Adjective(s):"
).grid(row = 4, column = 0, sticky = W)
# create itchy check button
self.is_itchy = BooleanVar()
Checkbutton(self,
text = "itchy",
variable = self.is_itchy
).grid(row = 4, column = 1, sticky = W)
# create joyous check button
self.is_joyous = BooleanVar()
Checkbutton(self,
text = "joyous",
variable = self.is_joyous
).grid(row = 4, column = 2, sticky = W)
# create electric check button
self.is_electric = BooleanVar()
Checkbutton(self,
text = "electric",
variable = self.is_electric
).grid(row = 4, column = 3, sticky = W)
# create a label for body parts radio buttons
Label(self,
text = "Body Part:"
).grid(row = 5, column = 0, sticky = W)
# create variable for single, body part
self.body_part = StringVar()
self.body_part.set(None)
# create body part radio buttons
body_parts = ["bellybutton", "big toe", "medulla oblongata"]
column = 1
for part in body_parts:
Radiobutton(self,
text = part,
variable = self.body_part,
value = part
).grid(row = 5, column = column, sticky = W)
column += 1
# create a submit button
Button(self,
text = "Click for story",
command = self.tell_story
).grid(row = 6, column = 0, sticky = W)
self.story_txt = Text(self, width = 75, height = 10, wrap = WORD)
self.story_txt.grid(row = 7, column = 0, columnspan = 4)
def tell_story(self):
""" Fill text box with new story based on user input. """
# get values from the GUI
person = self.person_ent.get()
noun = self.noun_ent.get()
verb = self.verb_ent.get()
adjectives = ""
if self.is_itchy.get():
adjectives += "itchy, "
if self.is_joyous.get():
adjectives += "joyous, "
if self.is_electric.get():
adjectives += "electric, "
body_part = self.body_part.get()
# create the story
story = "The famous explorer "
story += person
story += " had nearly given up a life-long quest to find The Lost City of "
story += noun.title()
story += " when one day, the "
story += noun
story += " found "
story += person + ". "
story += "A strong, "
story += adjectives
story += "peculiar feeling overwhelmed the explorer. "
story += "After all this time, the quest was finally over. A tear came to "
story += person + "'s "
story += body_part + ". "
story += "And then, the "
story += noun
story += " promptly devoured "
story += person + ". "
story += "The moral of the story? Be careful what you "
story += verb
story += " for."
# display the story
self.story_txt.delete(0.0, END)
self.story_txt.insert(0.0, story)
# main
def main():
root = Tk()
root.title("Mad Lib")
app = Application(root)
root.mainloop()
main()