Get variable from parent using container class-CodePudding

I have Tkinter main class with a notebook:

class MainApplication(tk.Tk):
    def __init__(self):
        super().__init__()
        self.color_widget = '#1B608E'

        self.notebook = ttk.Notebook(self)

        self.Page1 = Page1(self.notebook)
        self.Page2 = Page2(self.notebook)

        self.notebook.add(self.Page1, text='PCE Franchisés')
        self.notebook.add(self.Page2, text='PVC Franchisés')

For each page of the notebook, I have a class defined as container:

class Page1(ttk.Frame):

    def __init__(self, container):
        super().__init__(container)

        color = MainApplication.color_widget 
        self.label_INPUT = tk.Label(self, text='Settings', color=color,
                                    )
        self.label_INPUT.place(relx=0.03, rely=0.04)


class Page2(ttk.Frame):

    def __init__(self, container):
        super().__init__(container)

In each Page I want get the value of the variale color_widget defined in Main class. I tried MainApplication.color_widegt but it didn't work.

CodePudding user response：

The simple way is to pass the instance of MainApplication to those pages, so that those pages can access the instance variable color_widget via the passed instance:

import tkinter as tk
from tkinter import ttk

class MainApplication(tk.Tk):
    def __init__(self):
        super().__init__()
        self.geometry('800x600')

        self.color_widget = '#1B608E'

        self.notebook = ttk.Notebook(self)
        self.notebook.pack(fill='both', expand=1)

        self.Page1 = Page1(self.notebook, self) # pass instance of MainApplication as well
        self.Page2 = Page2(self.notebook, self)

        self.notebook.add(self.Page1, text='PCE Franchisés')
        self.notebook.add(self.Page2, text='PVC Franchisés')

class Page1(ttk.Frame):
    # added controller argument
    def __init__(self, container, controller):
        super().__init__(container)
        self.controller = controller

        # access MainApplication.color_widget
        color = controller.color_widget
        self.label_INPUT = tk.Label(self, text='Settings', fg=color)
        self.label_INPUT.place(relx=0.03, rely=0.04, anchor='nw')


class Page2(ttk.Frame):

    def __init__(self, container, controller):
        super().__init__(container)
        self.controller = controller

MainApplication().mainloop()

CodePudding user response：

self.color = self.master.master.color_widget