"""Modal dialog."""

from Tkinter import *

class App:

    def __init__(self, parent):
        self.parent = parent
        self.create_widgets()

    def create_widgets(self):
        self.button1 = Button(
            self.parent,
            text="Press me",
            command=self.do_it)
        self.button1.pack()

    def do_it(self):
        d = MyDialog(self.parent)
        print "value =", d.go()


class MyDialog:

    def __init__(self, parent):
        self.root = Toplevel(parent)
        self.label1 = Label(
            self.root,
            text="Are you sure you want to delete the file\n/etc/passwd?")
        self.label1.pack()
        self.button1 = Button(
            self.root,
            text="OK",
            command=self.ok)
        self.button1.pack(side=LEFT)
        self.button2 = Button(
            self.root,
            text="Cancel",
            command=self.cancel)
        self.button2.pack(side=RIGHT)
        self.value = -1

    def go(self):
        self.root.grab_set()
        self.root.mainloop()
        self.root.destroy()
        return self.value

    def ok(self):
        print "ok"
        self.value = 1
        self.root.quit()

    def cancel(self):
        print "cancel"
        self.value = 0
        self.root.quit()



# Boilerplate from here on...
if __name__ == '__main__':
    root = Tk()
    app = App(root)
    root.mainloop()