Edit File: Tkextra.py
#! /usr/bin/env python2.6 # A Python function that generates dialog boxes with a text message, # optional bitmap, and any number of buttons. # Cf. Ousterhout, Tcl and the Tk Toolkit, Figs. 27.2-3, pp. 269-270. from Tkinter import * mainWidget = None def dialog(master, title, text, bitmap, default, *args): # 1. Create the top-level window and divide it into top # and bottom parts. w = Toplevel(master, {'class': 'Dialog'}) w.title(title) w.iconname('Dialog') top = Frame(w, {'relief': 'raised', 'bd': 1, Pack: {'side': 'top', 'fill': 'both'}}) bot = Frame(w, {'relief': 'raised', 'bd': 1, Pack: {'side': 'bottom', 'fill': 'both'}}) # 2. Fill the top part with the bitmap and message. msg = Message(top, {'width': '3i', 'text': text, 'font': '-Adobe-Times-Medium-R-Normal-*-180-*', Pack: {'side': 'right', 'expand': 1, 'fill': 'both', 'padx': '3m', 'pady': '3m'}}) if bitmap: bm = Label(top, {'bitmap': bitmap, Pack: {'side': 'left', 'padx': '3m', 'pady': '3m'}}) # 3. Create a row of buttons at the bottom of the dialog. buttons = [] i = 0 for but in args: b = Button(bot, {'text': but, 'command': ('set', 'button', i)}) buttons.append(b) if i == default: bd = Frame(bot, {'relief': 'sunken', 'bd': 1, Pack: {'side': 'left', 'expand': 1, 'padx': '3m', 'pady': '2m'}}) b.lift() b.pack ({'in': bd, 'side': 'left', 'padx': '2m', 'pady': '2m', 'ipadx': '2m', 'ipady': '1m'}) else: b.pack ({'side': 'left', 'expand': 1, 'padx': '3m', 'pady': '3m', 'ipady': '2m', 'ipady': '1m'}) i = i+1 # 4. Set up a binding for <Return>, if there's a default, # set a grab, and claim the focus too. if default >= 0: w.bind('<Return>', lambda e, b=buttons[default], i=default: (b.flash(), b.setvar('button', i))) oldFocus = w.tk.call('focus') # XXX w.grab_set() w.focus() # 5. Wait for the user to respond, then restore the focus # and return the index of the selected button. w.waitvar('button') w.destroy() w.tk.call('focus', oldFocus) # XXX return w.getint(w.getvar('button')) def strdialog(master, title, text, bitmap, default, *args): # 1. Create the top-level window and divide it into top # and bottom parts. w = Toplevel(master, {'class': 'Dialog'}) w.title(title) w.iconname('Dialog') top = Frame(w, {'relief': 'raised', 'bd': 1, Pack: {'side': 'top', 'fill': 'both'}}) if args: bot = Frame(w, {'relief': 'raised', 'bd': 1, Pack: {'side': 'bottom', 'fill': 'both'}}) # 2. Fill the top part with the bitmap, message and input field. if bitmap: bm = Label(top, {'bitmap': bitmap, Pack: {'side': 'left', 'padx': '3m', 'pady': '3m'}}) msg = Message(top, {'width': '3i', 'text': text, 'font': '-Adobe-Times-Medium-R-Normal-*-180-*', Pack: {'side': 'left', 'fill': 'both', 'padx': '3m', 'pady': '3m'}}) field = Entry(top, {'relief':'sunken', Pack:{'side':'left', 'fill':'x', 'expand':1, 'padx':'3m', 'pady':'3m'}}) # 3. Create a row of buttons at the bottom of the dialog. buttons = [] i = 0 for but in args: b = Button(bot, {'text': but, 'command': ('set', 'button', i)}) buttons.append(b) if i == default: bd = Frame(bot, {'relief': 'sunken', 'bd': 1, Pack: {'side': 'left', 'expand': 1, 'padx': '3m', 'pady': '2m'}}) b.lift() b.pack ({'in': bd, 'side': 'left', 'padx': '2m', 'pady': '2m', 'ipadx': '2m', 'ipady': '1m'}) else: b.pack ({'side': 'left', 'expand': 1, 'padx': '3m', 'pady': '3m', 'ipady': '2m', 'ipady': '1m'}) i = i+1 # 4. Set up a binding for <Return>, if there's a default, # set a grab, and claim the focus too. if not args: w.bind('<Return>', lambda arg, top=top: top.setvar('button', 0)) field.bind('<Return>', lambda arg, top=top: top.setvar('button', 0)) elif default >= 0: w.bind('<Return>', lambda e, b=buttons[default], i=default: (b.flash(), b.setvar('button', i))) field.bind('<Return>', lambda e, b=buttons[default], i=default: (b.flash(), b.setvar('button', i))) oldFocus = w.tk.call('focus') # XXX w.grab_set() field.focus() # 5. Wait for the user to respond, then restore the focus # and return the index of the selected button. w.waitvar('button') v = field.get() w.destroy() w.tk.call('focus', oldFocus) # XXX if args: return v, w.getint(w.getvar('button')) else: return v def message(str): i = dialog(mainWidget, 'Message', str, '', 0, 'OK') def askyn(str): i = dialog(mainWidget, 'Question', str, '', 0, 'No', 'Yes') return i def askync(str): i = dialog(mainWidget, 'Question', str, '', 0, 'Cancel', 'No', 'Yes') return i-1 def askstr(str): i = strdialog(mainWidget, 'Question', str, '', 0) return i def askfile(str): # XXXX For now... i = strdialog(mainWidget, 'Question', str, '', 0) return i # The rest is the test program. def _go(): i = dialog(mainWidget, 'Not Responding', "The file server isn't responding right now; " "I'll keep trying.", '', -1, 'OK') print 'pressed button', i i = dialog(mainWidget, 'File Modified', 'File "tcl.h" has been modified since ' 'the last time it was saved. ' 'Do you want to save it before exiting the application?', 'warning', 0, 'Save File', 'Discard Changes', 'Return To Editor') print 'pressed button', i print message('Test of message') print askyn('Test of yes/no') print askync('Test of yes/no/cancel') print askstr('Type a string:') print strdialog(mainWidget, 'Question', 'Another string:', '', 0, 'Save', 'Save as text') def _test(): global mainWidget mainWidget = Frame() Pack.config(mainWidget) start = Button(mainWidget, {'text': 'Press Here To Start', 'command': _go}) start.pack() endit = Button(mainWidget, {'text': 'Exit', 'command': 'exit', Pack: {'fill' : 'both'}}) mainWidget.mainloop() if __name__ == '__main__': _test()
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