blob: 89271792b5421b1733e47d5ec7e7c1c574499ca6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
#coding=utf-8
import tkinter as tk
class NotifyVar(tk.Variable):
def __init__(self, *args, **kwargs):
tk.Variable.__init__(self, *args, **kwargs)
self._prevValue = self.get()
self._root.after(0, self.trace, 'w', self._onChange)
def _onChange(self, *args):
if self._prevValue != self.get():
self._root.event_generate('<<ValueChanged>>', when='tail')
self._prevValue = self.get()
class NotifyStringVar(NotifyVar, tk.StringVar):
pass
class NotifyIntVar(NotifyVar, tk.IntVar):
pass
class NotifyNumericVar(NotifyStringVar):
def get(self, default=None):
try:
return int(str(NotifyStringVar.get(self)).strip())
except ValueError:
return default
|
