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