| 1 | #! /usr/bin/env python
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| 2 |
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| 3 | # A Python function that generates dialog boxes with a text message,
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| 4 | # optional bitmap, and any number of buttons.
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| 5 | # Cf. Ousterhout, Tcl and the Tk Toolkit, Figs. 27.2-3, pp. 269-270.
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| 6 |
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| 7 | from Tkinter import *
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| 8 |
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| 9 | mainWidget = None
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| 10 |
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| 11 | def dialog(master, title, text, bitmap, default, *args):
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| 12 |
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| 13 | # 1. Create the top-level window and divide it into top
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| 14 | # and bottom parts.
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| 15 |
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| 16 | w = Toplevel(master, {'class': 'Dialog'})
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| 17 | w.title(title)
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| 18 | w.iconname('Dialog')
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| 19 |
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| 20 | top = Frame(w, {'relief': 'raised', 'bd': 1,
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| 21 | Pack: {'side': 'top', 'fill': 'both'}})
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| 22 | bot = Frame(w, {'relief': 'raised', 'bd': 1,
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| 23 | Pack: {'side': 'bottom', 'fill': 'both'}})
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| 24 |
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| 25 | # 2. Fill the top part with the bitmap and message.
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| 26 |
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| 27 | msg = Message(top,
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| 28 | {'width': '3i',
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| 29 | 'text': text,
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| 30 | 'font': '-Adobe-Times-Medium-R-Normal-*-180-*',
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| 31 | Pack: {'side': 'right', 'expand': 1,
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| 32 | 'fill': 'both',
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| 33 | 'padx': '3m', 'pady': '3m'}})
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| 34 | if bitmap:
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| 35 | bm = Label(top, {'bitmap': bitmap,
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| 36 | Pack: {'side': 'left',
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| 37 | 'padx': '3m', 'pady': '3m'}})
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| 38 |
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| 39 | # 3. Create a row of buttons at the bottom of the dialog.
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| 40 |
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| 41 | buttons = []
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| 42 | i = 0
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| 43 | for but in args:
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| 44 | b = Button(bot, {'text': but,
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| 45 | 'command': ('set', 'button', i)})
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| 46 | buttons.append(b)
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| 47 | if i == default:
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| 48 | bd = Frame(bot, {'relief': 'sunken', 'bd': 1,
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| 49 | Pack: {'side': 'left', 'expand': 1,
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| 50 | 'padx': '3m', 'pady': '2m'}})
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| 51 | b.lift()
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| 52 | b.pack ({'in': bd, 'side': 'left',
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| 53 | 'padx': '2m', 'pady': '2m',
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| 54 | 'ipadx': '2m', 'ipady': '1m'})
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| 55 | else:
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| 56 | b.pack ({'side': 'left', 'expand': 1,
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| 57 | 'padx': '3m', 'pady': '3m',
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| 58 | 'ipady': '2m', 'ipady': '1m'})
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| 59 | i = i+1
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| 60 |
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| 61 | # 4. Set up a binding for <Return>, if there's a default,
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| 62 | # set a grab, and claim the focus too.
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| 63 |
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| 64 | if default >= 0:
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| 65 | w.bind('<Return>',
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| 66 | lambda e, b=buttons[default], i=default:
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| 67 | (b.flash(),
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| 68 | b.setvar('button', i)))
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| 69 |
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| 70 | oldFocus = w.tk.call('focus') # XXX
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| 71 | w.grab_set()
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| 72 | w.focus()
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| 73 |
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| 74 | # 5. Wait for the user to respond, then restore the focus
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| 75 | # and return the index of the selected button.
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| 76 |
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| 77 | w.waitvar('button')
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| 78 | w.destroy()
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| 79 | w.tk.call('focus', oldFocus) # XXX
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| 80 | return w.getint(w.getvar('button'))
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| 81 |
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| 82 | def strdialog(master, title, text, bitmap, default, *args):
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| 83 |
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| 84 | # 1. Create the top-level window and divide it into top
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| 85 | # and bottom parts.
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| 86 |
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| 87 | w = Toplevel(master, {'class': 'Dialog'})
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| 88 | w.title(title)
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| 89 | w.iconname('Dialog')
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| 90 |
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| 91 | top = Frame(w, {'relief': 'raised', 'bd': 1,
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| 92 | Pack: {'side': 'top', 'fill': 'both'}})
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| 93 | if args:
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| 94 | bot = Frame(w, {'relief': 'raised', 'bd': 1,
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| 95 | Pack: {'side': 'bottom', 'fill': 'both'}})
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| 96 |
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| 97 | # 2. Fill the top part with the bitmap, message and input field.
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| 98 |
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| 99 | if bitmap:
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| 100 | bm = Label(top, {'bitmap': bitmap,
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| 101 | Pack: {'side': 'left',
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| 102 | 'padx': '3m', 'pady': '3m'}})
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| 103 |
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| 104 | msg = Message(top,
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| 105 | {'width': '3i',
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| 106 | 'text': text,
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| 107 | 'font': '-Adobe-Times-Medium-R-Normal-*-180-*',
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| 108 | Pack: {'side': 'left',
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| 109 | 'fill': 'both',
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| 110 | 'padx': '3m', 'pady': '3m'}})
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| 111 |
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| 112 | field = Entry(top,
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| 113 | {'relief':'sunken',
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| 114 | Pack:{'side':'left',
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| 115 | 'fill':'x',
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| 116 | 'expand':1,
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| 117 | 'padx':'3m', 'pady':'3m'}})
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| 118 | # 3. Create a row of buttons at the bottom of the dialog.
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| 119 |
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| 120 | buttons = []
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| 121 | i = 0
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| 122 | for but in args:
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| 123 | b = Button(bot, {'text': but,
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| 124 | 'command': ('set', 'button', i)})
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| 125 | buttons.append(b)
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| 126 | if i == default:
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| 127 | bd = Frame(bot, {'relief': 'sunken', 'bd': 1,
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| 128 | Pack: {'side': 'left', 'expand': 1,
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| 129 | 'padx': '3m', 'pady': '2m'}})
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| 130 | b.lift()
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| 131 | b.pack ({'in': bd, 'side': 'left',
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| 132 | 'padx': '2m', 'pady': '2m',
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| 133 | 'ipadx': '2m', 'ipady': '1m'})
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| 134 | else:
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| 135 | b.pack ({'side': 'left', 'expand': 1,
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| 136 | 'padx': '3m', 'pady': '3m',
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| 137 | 'ipady': '2m', 'ipady': '1m'})
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| 138 | i = i+1
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| 139 |
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| 140 | # 4. Set up a binding for <Return>, if there's a default,
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| 141 | # set a grab, and claim the focus too.
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| 142 |
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| 143 | if not args:
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| 144 | w.bind('<Return>', lambda arg, top=top: top.setvar('button', 0))
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| 145 | field.bind('<Return>', lambda arg, top=top: top.setvar('button', 0))
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| 146 | elif default >= 0:
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| 147 | w.bind('<Return>',
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| 148 | lambda e, b=buttons[default], i=default:
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| 149 | (b.flash(),
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| 150 | b.setvar('button', i)))
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| 151 | field.bind('<Return>',
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| 152 | lambda e, b=buttons[default], i=default:
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| 153 | (b.flash(),
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| 154 | b.setvar('button', i)))
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| 155 |
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| 156 | oldFocus = w.tk.call('focus') # XXX
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| 157 | w.grab_set()
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| 158 | field.focus()
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| 159 |
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| 160 | # 5. Wait for the user to respond, then restore the focus
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| 161 | # and return the index of the selected button.
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| 162 |
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| 163 | w.waitvar('button')
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| 164 | v = field.get()
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| 165 | w.destroy()
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| 166 | w.tk.call('focus', oldFocus) # XXX
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| 167 | if args:
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| 168 | return v, w.getint(w.getvar('button'))
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| 169 | else:
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| 170 | return v
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| 171 |
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| 172 | def message(str):
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| 173 | i = dialog(mainWidget, 'Message', str, '', 0, 'OK')
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| 174 |
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| 175 | def askyn(str):
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| 176 | i = dialog(mainWidget, 'Question', str, '', 0, 'No', 'Yes')
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| 177 | return i
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| 178 |
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| 179 | def askync(str):
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| 180 | i = dialog(mainWidget, 'Question', str, '', 0, 'Cancel', 'No', 'Yes')
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| 181 | return i-1
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| 182 |
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| 183 | def askstr(str):
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| 184 | i = strdialog(mainWidget, 'Question', str, '', 0)
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| 185 | return i
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| 186 |
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| 187 | def askfile(str): # XXXX For now...
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| 188 | i = strdialog(mainWidget, 'Question', str, '', 0)
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| 189 | return i
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| 190 |
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| 191 | # The rest is the test program.
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| 192 |
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| 193 | def _go():
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| 194 | i = dialog(mainWidget,
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| 195 | 'Not Responding',
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| 196 | "The file server isn't responding right now; "
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| 197 | "I'll keep trying.",
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| 198 | '',
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| 199 | -1,
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| 200 | 'OK')
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| 201 | print 'pressed button', i
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| 202 | i = dialog(mainWidget,
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| 203 | 'File Modified',
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| 204 | 'File "tcl.h" has been modified since '
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| 205 | 'the last time it was saved. '
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| 206 | 'Do you want to save it before exiting the application?',
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| 207 | 'warning',
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| 208 | 0,
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| 209 | 'Save File',
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| 210 | 'Discard Changes',
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| 211 | 'Return To Editor')
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| 212 | print 'pressed button', i
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| 213 | print message('Test of message')
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| 214 | print askyn('Test of yes/no')
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| 215 | print askync('Test of yes/no/cancel')
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| 216 | print askstr('Type a string:')
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| 217 | print strdialog(mainWidget, 'Question', 'Another string:', '',
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| 218 | 0, 'Save', 'Save as text')
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| 219 |
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| 220 | def _test():
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| 221 | import sys
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| 222 | global mainWidget
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| 223 | mainWidget = Frame()
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| 224 | Pack.config(mainWidget)
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| 225 | start = Button(mainWidget,
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| 226 | {'text': 'Press Here To Start', 'command': _go})
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| 227 | start.pack()
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| 228 | endit = Button(mainWidget,
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| 229 | {'text': 'Exit',
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| 230 | 'command': 'exit',
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| 231 | Pack: {'fill' : 'both'}})
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| 232 | mainWidget.mainloop()
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| 233 |
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| 234 | if __name__ == '__main__':
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| 235 | _test()
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