| Guido van Rossum | 1846882 | 1994-06-20 07:49:28 +0000 | [diff] [blame^] | 1 | #! /ufs/guido/bin/sgi/tkpython |
| 2 | |
| 3 | # A Python function that generates dialog boxes with a text message, |
| 4 | # optional bitmap, and any number of buttons. |
| 5 | # Cf. Ousterhout, Tcl and the Tk Toolkit, Figs. 27.2-3, pp. 269-270. |
| 6 | |
| 7 | from Tkinter import * |
| 8 | |
| 9 | def dialog(master, title, text, bitmap, default, *args): |
| 10 | |
| 11 | # 1. Create the top-level window and divide it into top |
| 12 | # and bottom parts. |
| 13 | |
| 14 | w = Toplevel(master, {'class': 'Dialog'}) |
| 15 | w.tk.call('global', 'button') |
| 16 | w.title(title) |
| 17 | w.iconname('Dialog') |
| 18 | |
| 19 | top = Frame(w, {'relief': 'raised', 'bd': 1, |
| 20 | Pack: {'side': 'top', 'fill': 'both'}}) |
| 21 | bot = Frame(w, {'relief': 'raised', 'bd': 1, |
| 22 | Pack: {'side': 'bottom', 'fill': 'both'}}) |
| 23 | |
| 24 | # 2. Fill the top part with the bitmap and message. |
| 25 | |
| 26 | msg = Message(top, |
| 27 | {'width': '3i', |
| 28 | 'text': text, |
| 29 | 'font': '-Adobe-Times-Medium-R-Normal-*-180-*', |
| 30 | Pack: {'side': 'right', 'expand': 1, |
| 31 | 'fill': 'both', |
| 32 | 'padx': '3m', 'pady': '3m'}}) |
| 33 | if bitmap: |
| 34 | bm = Label(top, {'bitmap': bitmap, |
| 35 | Pack: {'side': 'left', |
| 36 | 'padx': '3m', 'pady': '3m'}}) |
| 37 | |
| 38 | # 3. Create a row of buttons at the bottom of the dialog. |
| 39 | |
| 40 | buttons = [] |
| 41 | i = 0 |
| 42 | for but in args: |
| 43 | b = Button(bot, {'text': but, |
| 44 | 'command': ('set', 'button', i)}) |
| 45 | buttons.append(b) |
| 46 | if i == default: |
| 47 | bd = Frame(bot, {'relief': 'sunken', 'bd': 1, |
| 48 | Pack: {'side': 'left', 'expand': 1, |
| 49 | 'padx': '3m', 'pady': '2m'}}) |
| 50 | w.tk.call('raise', b) |
| 51 | b.pack ({'in': bd, 'side': 'left', |
| 52 | 'padx': '2m', 'pady': '2m', |
| 53 | 'ipadx': '2m', 'ipady': '1m'}) |
| 54 | else: |
| 55 | b.pack ({'side': 'left', 'expand': 1, |
| 56 | 'padx': '3m', 'pady': '3m', |
| 57 | 'ipady': '2m', 'ipady': '1m'}) |
| 58 | i = i+1 |
| 59 | |
| 60 | # 4. Set up a binding for <Return>, if there's a default, |
| 61 | # set a grab, and claim the focus too. |
| 62 | |
| 63 | if default >= 0: |
| 64 | w.bind('<Return>', |
| 65 | lambda b=buttons[default], i=default: |
| 66 | (b.cmd('flash'), |
| 67 | b.tk.call('set', 'button', i))) |
| 68 | |
| 69 | oldFocus = w.tk.call('focus') |
| 70 | w.tk.call('grab', 'set', w) |
| 71 | w.tk.call('focus', w) |
| 72 | |
| 73 | # 5. Wait for the user to respond, then restore the focus |
| 74 | # and return the index of the selected button. |
| 75 | |
| 76 | w.tk.call('tkwait', 'variable', 'button') |
| 77 | w.tk.call('destroy', w) |
| 78 | w.tk.call('focus', oldFocus) |
| 79 | return w.tk.call('set', 'button') |
| 80 | |
| 81 | # The rest is the test program. |
| 82 | |
| 83 | def go(): |
| 84 | i = dialog(mainWidget, |
| 85 | 'Not Responding', |
| 86 | "The file server isn't responding right now; " |
| 87 | "I'll keep trying.", |
| 88 | '', |
| 89 | -1, |
| 90 | 'OK') |
| 91 | print 'pressed button', i |
| 92 | i = dialog(mainWidget, |
| 93 | 'File Modified', |
| 94 | 'File "tcl.h" has been modified since ' |
| 95 | 'the last time it was saved. ' |
| 96 | 'Do you want to save it before exiting the application?', |
| 97 | 'warning', |
| 98 | 0, |
| 99 | 'Save File', |
| 100 | 'Discard Changes', |
| 101 | 'Return To Editor') |
| 102 | print 'pressed button', i |
| 103 | |
| 104 | def test(): |
| 105 | import sys |
| 106 | global mainWidget |
| 107 | mainWidget = Frame() |
| 108 | Pack.config(mainWidget) |
| 109 | start = Button(mainWidget, |
| 110 | {'text': 'Press Here To Start', 'command': go}) |
| 111 | start.pack() |
| 112 | endit = Button(mainWidget, |
| 113 | {'text': 'Exit', |
| 114 | 'command': 'exit', |
| 115 | Pack: {'fill' : 'both'}}) |
| 116 | mainWidget.tk.mainloop() |
| 117 | |
| 118 | if __name__ == '__main__': |
| 119 | test() |