labelframe.py

import tkinter as tk
from tkinter import ttk
from scrollableframe import ScrollableFrame
from scrollableframe import WidgetType


class LabelFrame(ScrollableFrame):
    '''Derived class that defines logic for adding a widget to the frame'''
    _Y_PAD = (10, 0)
    _X_PAD = (10, 10)

    def __init__(self, master, *args, **kwargs):
        ScrollableFrame.__init__(self, master,
                                 LabelFrame._Y_PAD[0],
                                 LabelFrame._X_PAD[0],
                                 LabelFrame.set_visible,
                                 LabelFrame.set_hidden,
                                 *args, **kwargs)

    def add_label(self, text):
        label = ttk.Label(self.widget_frame, text=text, anchor=tk.CENTER)
        label.wtype = WidgetType.WTYPE_LEAF
        label.depth = label.master.depth + 1
        label.visible = False
        label.grid(column=0, row=self.num_widgets,
                   padx=LabelFrame._X_PAD, pady=LabelFrame._Y_PAD,
                   sticky=tk.EW)

        self.widgets.append(label)
        self.num_widgets += 1

        self.update_idletasks()  # Let the UI update
        self._check_visible_widget_range()

    def set_visible(label):
        print(f'\'{label["text"]}\' set visible')

    def set_hidden(label):
        print(f'\'{label["text"]}\' set hidden')