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"""
OptionMenu widget modified to allow dynamic menu reconfiguration
and setting of highlightthickness
"""
from tkinter import OptionMenu, _setit, Tk, StringVar, Button
import copy
import re
class DynOptionMenu(OptionMenu):
"""
unlike OptionMenu, our kwargs can include highlightthickness
"""
def __init__(self, master, variable, value, *values, **kwargs):
#get a copy of kwargs before OptionMenu.__init__ munges them
kwargsCopy=copy.copy(kwargs)
if 'highlightthickness' in list(kwargs.keys()):
del(kwargs['highlightthickness'])
OptionMenu.__init__(self, master, variable, value, *values, **kwargs)
self.config(highlightthickness=kwargsCopy.get('highlightthickness'))
#self.menu=self['menu']
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):
root = Tk()
root.title("Tets dynamic option menu")
var = StringVar(root)
width, height, x, y = list(map(int, re.split('[x+]', parent.geometry())))
root.geometry("+%d+%d"%(x, y + 150))
var.set("Old option set") #Set the default value
dyn = DynOptionMenu(root,var, "old1","old2","old3","old4")
dyn.pack()
def update():
dyn.SetMenu(["new1","new2","new3","new4"],value="new option set")
button = Button(root, text="Change option set", command=update)
button.pack()
root.mainloop()
if __name__ == '__main__':
from idlelib.idle_test.htest import run
run(_dyn_option_menu)
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