dialog.py

####
#       Class Dialog
#
#       Purpose
#       Base class for many dialog box classes.
####

# last updated 29-Jul-2008 -- dmreagan

from Tkinter import *

class Dialog:

        def __init__(self, master):
                self.master = master
                self.top = Toplevel(self.master)
                self.top.title(self.__class__.__name__)
                self.top.minsize(1, 1)
                self.myWaitVar = `self.top` + 'EndDialogVar'

        def Show(self):
                self.SetupDialog()
                self.CenterDialog()
                self.top.deiconify()
                self.top.focus()

        def TerminateDialog(self, withValue):
                self.top.setvar(self.myWaitVar, withValue)
                self.top.withdraw()

        def DialogCleanup(self):
                self.top.destroy()
                self.master.focus()

        def SetupDialog(self):
                pass

        def CenterDialog(self):
                self.top.withdraw()
                self.top.update_idletasks()
                w = self.top.winfo_screenwidth()
                h = self.top.winfo_screenheight()
                reqw = self.top.winfo_reqwidth()
                reqh = self.top.winfo_reqheight()
                centerx = `(w-reqw)/2`
                centery = `(h-reqh)/2 - 100`
                geomStr = "+" + centerx + "+" + centery
                self.top.geometry(geomStr)

####
#       Class ModalDialog
#
#       Purpose
#       Base class for many modal dialog box classes.
####

class ModalDialog(Dialog):

        def __init__(self, master):
                Dialog__init__(self, master)

        def Show(self):
                import string
                self.SetupDialog()
                self.CenterDialog()
                self.top.grab_set()
                self.top.focus()
                self.top.deiconify()
                self.top.waitvar(self.myWaitVar)
#               return string.atoi(self.top.getvar(self.myWaitVar)
                return int(self.top.getvar(self.myWaitVar))