CODEWITHSUNDEEP
pythontkinter
M.Tomlinson
M.Tomlinson

Reputation: 97

How to retain the value of an entry field acquired in a popup toplevel window in tkinter?

I cannot get my code to pass the pop up text entry to a global variable i am also attempting to set this global variable as the default text in the entry field in all future instances.

Pop up -> Enter Filepath -> accept&close -> Re-open shows last filepath present as default -> if changed new filepath entry becomes default in future.

import tkinter as tk
from tkinter import ttk
from tkinter import *

master = tk.Tk()

Var1 = StringVar()
Filepath_Var = None

def A_Connect():
    root = Tk()
    root.title("Entry Field")

    def entry_field():
        global Filepath_Var
        Filepath_Var = Var1.get()

    tk.Label(root, text="filepath: ").grid(row=0)
    e1 = tk.Entry(root, textvariable=Var1)

    tk.Label(root, text="Item Number: ").grid(row=1)
    e2 = tk.Entry(root)
    #e1.insert(0, r"C:\Users\zxy\ghj\iugf\Bea\something.xlsx")
    e1.insert(0, Var1.get())

    e1.grid(row=0, column=1)
    e2.grid(row=1, column=1)

    Button(root, text = 'Accept', command = entry_field).grid(row=3, column=1,
                                    sticky=W, pady=4)
    root.mainloop()

note = ttk.Notebook(master)

tab1 = tk.Frame(note)

canvas7 = Canvas(tab1, width=520, height=350)
canvas7.pack()

A_Button = tk.Button(tab1, text="A",
                       width=12, height=3,command=A_Connect, anchor = 'w')
A_Button_Window = canvas7.create_window(20, 120, anchor = 'sw',
                                         window = A_Button)

note.add(tab1, text = "  Main    ")

note.pack()
master.mainloop()

Upvotes: 0

Views: 279

Answers (1)

Reblochon Masque
Reblochon Masque

Reputation: 36682

As a follow up to your earlier question, I encapsulated an example of the (bare bones) desired behavior in two classes:

The main App consists of a button that launches an entry popup; upon filling the fields and accepting, the value in the entry is provided to the App, and the popup closed.

The value entered is stored by the App, and used to populate the entry field of the entry fields in successive popups.

You will probably want to add confirmations and verifications before changing the defaults, and closing the popup, but here, you have the basic skeleton to attach this to.

import tkinter as tk


class PopUpEntry(tk.Toplevel):
    def __init__(self, master, default_value=None):
        self.master = master
        super().__init__(self.master)
        if default_value is None:
            self.default_entry = 'C:*****\somthing.xlsx'
        else:
            self.default_entry = default_value
        self.title("Entry Field")
        tk.Label(self, text="Filepath: ").pack()
        self.e1 = tk.Entry(self)
        self.e1.insert(0, self.default_entry)
        self.e1.pack()
        tk.Button(self, text = 'Accept', command=self.entry_field).pack()

    def entry_field(self):
        self.default_entry = self.e1.get()
        self.master.provide_entry_value(self.default_entry)
        self.destroy()


class App(tk.Tk):
    def __init__(self):
        super().__init__()
        self.pop_entry = tk.Button(self, text='launch entry', command=self.launch_entry)
        self.pop_entry.pack()
        self.default_entry_value = None
        self.mainloop()

    def launch_entry(self):
        PopUpEntry(self, self.default_entry_value)

    def provide_entry_value(self, value):
        self.default_entry_value = value
        print(self.default_entry_value)

App()

Upvotes: 1

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