from tkinter import *
import tkinter.scrolledtext as scrolledtext
from tkinter.filedialog import askopenfilename,asksaveasfilename
import os
root = Tk()
root.title("Notatnik")
root.geometry("644x600+350+40")
TextArea = scrolledtext.ScrolledText(root , font="lucida 13")
TextArea.pack(expand=True,fill=BOTH)
file = None
MenuBar = Menu(root)
root.config(menu=MenuBar)
FileMenu = Menu(MenuBar , tearoff=0)
EditMenu = Menu(MenuBar , tearoff=0)
MenuBar.add_cascade(label="Plik",menu=FileMenu)
MenuBar.add_cascade(label="Edycja",menu=EditMenu)

def Nowy():
    global file
    root.title("Untitled - Notepad")
    TextArea.delete(1.0,END)

def Otwórz():
    global file
    file = askopenfilename(defaultextension =".txt",filetypes=[("Text Documents","*.txt")])
    if file == "":
        file = None
    else:
        root.title(os.path.basename(file) + " - Notepad")
        f = open(file,"r")
        TextArea.insert(1.0, f.read())
        f.close()
def Zapisz():
    global file
    if file == None:
        file = asksaveasfilename(defaultextension =".txt",filetypes=[("All Files","*.*"),("Text Documents","*.txt")])
        if file == "":
            file = None
        else:
            f = open(file,"w")
            f.write(TextArea.get(1.0,END))
            f.close()
            root.title(os.path.basename(file) + " - Notepad ")
    else:
        f = open(file,"w")
        f.write(TextArea.get(1.0,END))
        f.close()
def Zapisz_jako():
    global file
    if file == None:
        file = asksaveasfilename(defaultextension =".txt",filetypes=[("All Files","*.*"),("Text Documents","*.txt")])
        if file == "":
            file = None
        else:
            f = open(file,"w")
            f.write(TextArea.get(1.0,END))
            f.close()
            root.title(os.path.basename(file) + " - Notepad ")
    else:
        f = open(file,"w")
        f.write(TextArea.get(1.0,END))
        f.close()

def zamknij():
    root.destroy()
def wytnij():
    TextArea.event_generate(("<<Cut>>"))
def kopiuj():
    TextArea.event_generate(("<<Copy>>"))
def wklej():
    TextArea.event_generate(("<<Paste>>"))
FileMenu.add_command(label="Nowy" , command = Nowy)
FileMenu.add_command(label="Otwórz" , command = Otwórz)
FileMenu.add_command(label="Zapisz" , command = Zapisz)
FileMenu.add_command(label="Zapisz jako..." , command = Zapisz_jako)
FileMenu.add_separator()
FileMenu.add_command(label = "Zamknij" , command = zamknij)
EditMenu.add_command(label = "Wytnij" , command = wytnij)
EditMenu.add_command(label = "Kopiuj" , command = kopiuj)
EditMenu.add_command(label = "Wklej" , command = wklej)
root.mainloop()