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"""
OptionMenu widget modified to allow dynamic menu reconfiguration
and setting of highlightthickness
"""
from tkinter import OptionMenu, _setit, StringVar, Button
class DynOptionMenu(OptionMenu):
"""Add SetMenu and highlightthickness to OptionMenu.
Highlightthickness adds space around menu button.
"""
def __init__(self, master, variable, value, *values, **kwargs):
highlightthickness = kwargs.pop('highlightthickness', None)
OptionMenu.__init__(self, master, variable, value, *values, **kwargs)
self['highlightthickness'] = highlightthickness
self.variable = variable
self.command = kwargs.get('command')
def SetMenu(self,valueList,value=None):
"""
clear and reload the menu with a new set of options.
valueList - list of new options
value - initial value to set the optionmenu's menubutton to
"""
self['menu'].delete(0,'end')
for item in valueList:
self['menu'].add_command(label=item,
command=_setit(self.variable,item,self.command))
if value:
self.variable.set(value)
def _dyn_option_menu(parent): # htest #
from tkinter import Toplevel # + StringVar, Button
top = Toplevel(parent)
top.title("Test dynamic option menu")
x, y = map(int, parent.geometry().split('+')[1:])
top.geometry("200x100+%d+%d" % (x + 250, y + 175))
top.focus_set()
var = StringVar(top)
var.set("Old option set") #Set the default value
dyn = DynOptionMenu(top, var, "old1","old2","old3","old4",
highlightthickness=5)
dyn.pack()
def update():
dyn.SetMenu(["new1","new2","new3","new4"], value="new option set")
button = Button(top, text="Change option set", command=update)
button.pack()
if __name__ == '__main__':
# Only module without unittests because of intention to replace.
from idlelib.idle_test.htest import run
run(_dyn_option_menu)
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