#!/usr/bin/env python

import tkinter as tk
import tkinter.messagebox as messagebox

#############
# paintman - sanitised code sample demonstrating bug.

class MainWindow(tk.Frame):
	def __init__(self, master=None):
		super().__init__(master)
		master.title("Paintmgr") # References the Toplevel for the MainWindow
		self.master = master
		self.grid()
		self.create_widgets()

	def create_widgets(self):
		thiscol = 0
		tk.Label(self, text='Corner x').grid(row=0,column=thiscol)
		tk.Label(self, text='Corner y').grid(row=1,column=thiscol)
		tk.Label(self, text='Corner z').grid(row=2,column=thiscol)

		thiscol += 1
		self.xcoord = tk.Entry(self)
		self.xcoord.grid(row=0, column=thiscol)

		self.ycoord = tk.Entry(self)
		self.ycoord.grid(row=1, column=thiscol)

		self.zcoord = tk.Entry(self)
		self.zcoord.grid(row=2, column=thiscol)

		thiscol += 1
		tk.Button(self, text='Work on', command=self.WorkOnButtonAction).grid(row=0, column=thiscol)
		tk.Button(self, text='Quit',    command=self.QuitButtonAction).grid(  row=1, column=thiscol)

		for coliter in range(0,thiscol):
			self.columnconfigure(coliter, weight=1, pad=20)
		self.master.minsize(500,200)

	def QuitButtonAction(self):
		self.master.destroy()
	def WorkOnButtonAction(self):
		# Validate the original window's data before making a new window.
		# If the user gave invalid data, give a popup and stop.

		if not (	(self.xcoord.get().isdigit) and
				(self.ycoord.get().isdigit) and
				(self.zcoord.get().isdigit)):
			messagebox.showerror('Bad input', 'Input failed validation')
			return

		WorkOnWindow = tk.Toplevel()
		WorkOnWindow.title("Paimtmgr - Work")
		WorkOnWindow.grid()

		thiscol = 0
		tk.Label(WorkOnWindow, text=f'X:').grid(row=0, column=thiscol)
		tk.Label(WorkOnWindow, text=f'Y:').grid(row=1, column=thiscol)
		tk.Label(WorkOnWindow, text=f'Z:').grid(row=2, column=thiscol)
		tk.Label(WorkOnWindow, text=f'Status:').grid(row=3, column=thiscol)
		thiscol += 1

		tk.Button(WorkOnWindow, text='Fetch',   command=self.FetchButtonAction).grid(row=0, column=thiscol)
		tk.Button(WorkOnWindow, text='Edit',    command=self.EditButtonAction ).grid(row=1, column=thiscol)
		tk.Button(WorkOnWindow, text='Push',    command=self.PushButtonAction ).grid(row=2, column=thiscol)

		thiscol += 1
		tk.Label(WorkOnWindow, text='Close this window when done with it.\nPlease do not edit settings in the main window while using this one.\nPlease do not open multiples of this window.').grid(row=4, column=0, columnspan=5)

		for coliter in range(0,thiscol):
			WorkOnWindow.columnconfigure(coliter, weight=1, pad=20)
		WorkOnWindow.minsize(500,200)

	def FetchButtonAction(self):
		pass
	def EditButtonAction(self):
		pass
	def PushButtonAction(self):
		pass

root = tk.Tk()
app = MainWindow(master=root)
app.mainloop()