GUI-Python3 chuyen tu MenuBar sang Button?

[Cuong_Nguyen7 (Cuong Nguyen)]

Nho may ban edit code nay. Minh muon chuyen tu MenuBar sang su dung
Button thi lam sao nho may ban giup. Day la code minh da test tren
Python3. thanks.

#!/usr/bin/env python3
from tkinter import Tk, ttk, Text, Scrollbar, Menu, messagebox, filedialog, BooleanVar, Checkbutton, Label, Entry, StringVar, Grid, Frame
import os, subprocess, json, string

class Editor():
    def __init__(self, root):
        self.root = root        
        self.TITLE = "Simple Editor"
        self.file_path = None
        self.set_title()
        
        frame = Frame(root)
        self.yscrollbar = Scrollbar(frame, orient="vertical")
        self.editor = Text(frame, yscrollcommand=self.yscrollbar.set)
        self.editor.pack(side="left", fill="both", expand=1)
        self.editor.config( wrap = "word", undo = True, width = 80 )        
        self.editor.focus()
        self.yscrollbar.pack(side="right", fill="y")
        self.yscrollbar.config(command=self.editor.yview)        
        frame.pack(fill="both", expand=1)

        #create a top level menu
        self.menubar = Menu(root)
        #Menu item File
        filemenu = Menu(self.menubar, tearoff=0)# tearoff = 0 => can't be seperated from window
        filemenu.add_command(label="New", command=self.file_new)
        filemenu.add_command(label="Open...", command=self.file_open)
        filemenu.add_command(label="Save", command=self.file_save)
        filemenu.add_command(label="Save As...", command=self.file_save_as)
        filemenu.add_separator()
        filemenu.add_command(label="Exit", command=self.file_quit)
        self.menubar.add_cascade(label="File", menu=filemenu)
        
        # display the menu
        root.config(menu=self.menubar)
        
    def save_if_modified(self, event=None):
        if self.editor.edit_modified(): #modified
            response = messagebox.askyesnocancel("Save?", " Do you want to save changes?") #yes = True, no = False, cancel = None
            if response: #yes/save
                result = self.file_save()
                if result == "saved": #saved
                    return True
                else: #save cancelled
                    return None
            else:
                return response #None = cancel/abort, False = no/discard
        else: #not modified
            return True
    
    def file_new(self, event=None):
        result = self.save_if_modified()
        if result != None: #None => Aborted or Save cancelled, False => Discarded, True = Saved or Not modified
            self.editor.delete(1.0, "end")
            self.editor.edit_modified(False)
            self.editor.edit_reset()
            self.file_path = None
            self.set_title()
            
    def file_open(self, event=None, filepath=None):
        result = self.save_if_modified()
        if result != None: #None => Aborted or Save cancelled, False => Discarded, True = Saved or Not modified
            if filepath == None:
                filepath = filedialog.askopenfilename()
            if filepath != None  and filepath != '':
                with open(filepath) as f:
                    fileContents = f.read()# Get all the text from file.           
                # Set current text to file contents
                self.editor.delete(1.0, "end")
                self.editor.insert(1.0, fileContents)
                self.editor.edit_modified(False)
                self.file_path = filepath

    def file_save(self, event=None):
        if self.file_path == None:
            result = self.file_save_as()
        else:
            result = self.file_save_as(filepath=self.file_path)
        return result

    def file_save_as(self, event=None, filepath=None):
        if filepath == None:
            filepath = filedialog.asksaveasfilename(defaultextension='.txt')
        try:
            with open(filepath, 'wb') as f:
                text = self.editor.get(1.0, "end-1c")
                f.write(bytes(text, 'UTF-8'))
                self.editor.edit_modified(False)
                self.file_path = filepath
                self.set_title()
                return "saved"
        except FileNotFoundError:
            print('FileNotFoundError')
            return "cancelled"

    def file_quit(self, event=None):
        result = self.save_if_modified()
        if result != None: #None => Aborted or Save cancelled, False => Discarded, True = Saved or Not modified
            self.root.destroy() #sys.exit(0)

    def set_title(self, event=None):
        if self.file_path != None:
            title = os.path.abspath(self.file_path)
        else:
            title = "Untitled"
        self.root.title(self.TITLE + " - " + title)
           
if __name__ == "__main__":
    root = Tk()
    editor = Editor(root)
    root.mainloop()