inputs.py

import tkinter.ttk as tk

class InputRow:
    def __init__(self, frame, title):
        self.frame = frame
        self.error_label = tk.tkinter.Label(self.frame, fg="red", width=50)
        self.v = tk.tkinter.StringVar()
        self.title = title
        self.input = None

    def value(self):
        return self.v.get()

    def on_validate(self):
        return True

    def draw(self, row):
        self.input.grid(row=row, column=1)
        self.error_label.grid(row=row, column=2)

class OptionInput(InputRow):
    def __init__(self, frame, title, *args):
        InputRow.__init__(self, frame, title)
        self.v.set(args[0])
        self.input = tk.OptionMenu(self.frame, self.v, args[0], *args)
        self.label = tk.Label(self.frame,text=title)

    def draw(self,row):
        InputRow.draw(self, row)
        self.label.grid(row=row, column=0)
    
class CheckboxInput(InputRow):
    def __init__(self, frame, title):
        InputRow.__init__(self, frame, title)
        self.v = tk.tkinter.BooleanVar()
        self.v.set(False)
        self.input = tk.Checkbutton(self.frame, variable=self.v, text=title)

class EntryInput(InputRow):
    def __init__(self, frame, title, validation_function):
        InputRow.__init__(self, frame, title)
        self.validation_function = validation_function
        self.label = tk.Label(self.frame,text=title)
        self.input = (tk.Entry(
            self.frame,
            width=20, 
            textvariable=self.v, 
            validate="focusout", 
            validatecommand=self.on_validate,
            invalidcommand=lambda: self.on_invalidate(self.validation_function(self.v.get())["error"])))
        self.v.set("2121211111141")

    def is_valid(self):
        return self.validation_function(self.v.get())["success"]    == True

    def value(self):
        return self.validation_function(self.v.get())["value"]


    def draw(self,row):
        InputRow.draw(self, row)
        self.label.grid(row=row, column=0,sticky=tk.tkinter.W) 

    def on_invalidate(self, message):
        self.error_label["text"] = message

    def on_validate(self):
        valid = self.is_valid()
        if(valid):
            self.error_label["text"] = ""
        return valid