tkinter enable/disable menu

Question

I need some help in this. I want the user to login ... once he is logged in, only the menu corresponding to the module he is allowed to access will be enabled. So, I need to disable all the menus (except File and Help) in the beginning.. and I need to enable the corresponding menu after login...

the login code is not written yet.. I just want to see how to do that... My code is below:

import Tkinter as tk

class gv:
    w = 800
    h = 500
    title = 'gsm ...'
    MDLS =   [['File','Settings','_s','Quit'],
            ['main menu','mm1','mm2'],
            ['second menu','sm1','sm2','sm3'],
            ['Help','About']]

class GammaSoft(tk.Frame):
    def __init__(self, master):
        tk.Frame.__init__(self, master, width=gv.w, height=gv.h)
        self.master.title(gv.title)
        self.master.resizable(0,0)
        self.pack_propagate(0)
        self.pack()

        menu_bar = tk.Menu()
        self.nMenu = []
        mc = 0
        for MDL in gv.MDLS:
            self.nMenu.append(tk.Menu(menu_bar, tearoff=0))
            for itm in MDL[1:]:
                if itm == '_s':
                    self.nMenu[mc].add_separator()
                else:
                    self.nMenu[mc].add_command(label=itm, command=lambda itm=itm: self.menu_call(itm))
            menu_bar.add_cascade(label=MDL[0], menu=self.nMenu[mc])
            mc += 1
        self.master.config(menu=menu_bar)

        frame1 = tk.Frame(self)
        frame1.pack()
        lblUsername = tk.Label(frame1, text='Username: ')
        lblPassword = tk.Label(frame1, text='Password: ')
        lblModule = tk.Label(frame1, text='Module: ')
        lblSpace1 = tk.Label(frame1, text='      ')
        lblSpace2 = tk.Label(frame1, text='      ')
        self.Username_var = tk.StringVar()
        self.txtUsername = tk.Entry(frame1, textvariable=self.Username_var, width=14)
        self.Password_var = tk.StringVar()
        self.txtPassword = tk.Entry(frame1, textvariable=self.Password_var, show="x", width=14)
        self.Module_var = tk.StringVar()
        options = [Li[0] for Li in gv.MDLS[1:len(gv.MDLS)-1]]
        self.Module_var.set(options[0])
        self.cmbModule = tk.OptionMenu(frame1, self.Module_var, *tuple(options))
        self.cmbModule.config(takefocus=1, width=14)
        self.btnLiLo = tk.Button(frame1, text='Log in', command=self.LiLo)

        lblUsername.pack(side=tk.LEFT)
        self.txtUsername.pack(side=tk.LEFT)
        lblSpace1.pack(side=tk.LEFT)
        lblPassword.pack(side=tk.LEFT)
        self.txtPassword.pack(side=tk.LEFT)
        lblSpace2.pack(side=tk.LEFT)
        lblModule.pack(side=tk.LEFT)
        self.cmbModule.pack(side=tk.LEFT)
        self.btnLiLo.pack(side=tk.RIGHT)

        separator = tk.Frame(self,height=2, bd=1, relief=tk.SUNKEN)
        separator.pack(fill=tk.X, padx=5, pady=5)

        frame2 = tk.Frame(self)
        frame2_up = tk.Frame(frame2)
        frame2_up.pack(fill=tk.X, side=tk.TOP)
        frame2_dn = tk.Frame(frame2)
        frame2_dn.pack(fill=tk.BOTH, side=tk.BOTTOM)

        lblFilter = tk.Label(frame2_up, text='Filter Text: ')
        lblAt = tk.Label(frame2_up, text='At: ')
        lblSpace3 = tk.Label(frame2_up, text='      ')
        self.Filter_var = tk.StringVar()
        self.txtFilter = tk.Entry(frame2_up, textvariable=self.Filter_var, width=14)
        self.At_var = tk.StringVar()
        self.cmbAt = tk.OptionMenu(frame2_up, self.At_var, '')
        self.cmbAt.config(takefocus=1, width=14)
        self.btnGo = tk.Button(frame2_up, text='Apply')
        self.btnClr = tk.Button(frame2_up, text='Clear')
        lblFilter.pack(side=tk.LEFT)
        self.txtFilter.pack(side=tk.LEFT)
        lblSpace3.pack(side=tk.LEFT)
        lblAt.pack(side=tk.LEFT)
        self.cmbAt.pack(side=tk.LEFT)
        self.btnClr.pack(side=tk.RIGHT)
        self.btnGo.pack(side=tk.RIGHT)

        frame2.pack(fill=tk.BOTH)
        self.log_out

    def log_out(self):
        pass

    def LiLo(self):
        pass

    def print_out(self):
        print('%s, %s!' % (self.greeting_var.get().title(), self.recipient_var.get()))

    def menu_call(self, data):
        print "Once more, clicked / commanded %s" % data

    def run(self):
        self.mainloop()

app = GammaSoft(tk.Tk())
app.run()

Answer 1

You can enable or disable an entire menu by enabling or disabling the item it is connected to.

Here's a contrived example. Use the Test1 menu to enable or disable the Test2 menu.

import Tkinter as tk

class Example(tk.Frame):
    def __init__(self, root):
        tk.Frame.__init__(self, root)

        self.menubar = tk.Menu()
        self.test1Menu = tk.Menu()
        self.test2Menu = tk.Menu()
        self.menubar.add_cascade(label="Test1", menu=self.test1Menu)
        self.menubar.add_cascade(label="Test2", menu=self.test2Menu)

        self.test1Menu.add_command(label="Enable Test2", command=self.enable_menu)
        self.test1Menu.add_command(label="Disable Test2", command=self.disable_menu)
        self.test2Menu.add_command(label="One")
        self.test2Menu.add_command(label="Two")
        self.test2Menu.add_command(label="Three")
        self.test2Menu.add_separator()
        self.test2Menu.add_command(label="Four")
        self.test2Menu.add_command(label="Five")

        root.configure(menu=self.menubar)

    def enable_menu(self):
        self.menubar.entryconfig("Test2", state="normal")

    def disable_menu(self):
        self.menubar.entryconfig("Test2", state="disabled")

if __name__ == "__main__":
    root = tk.Tk()
    root.geometry("500x500")
    app = Example(root)
    app.pack(fill="both", expand=True)
    root.mainloop()