Pmw.Counter: custom and not custom
#Pmw copyright
#Copyright 1997-1999 Telstra Corporation Limited, Australia
#Copyright 2000-2002 Really Good Software Pty Ltd, Australia
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is furnished
#to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
#INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
#PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
#HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
#OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
#SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
title = 'Pmw.Counter demonstration'
# Import Pmw from this directory tree.
import sys
sys.path[:0] = ['../../..']
import string
import time
import Tkinter
import Pmw
class Demo:
def __init__(self, parent):
# Need to use long ints here because on the Macintosh the maximum size
# of an integer is smaller than the value returned by time.time().
now = (long(time.time()) / 300) * 300
# Create the Counters.
self._notcustom = Pmw.Counter(parent)
self._custom = Pmw.Counter(parent,
labelpos = 'w',
label_text = 'Custom:',
entryfield_value = specialword[:4],
datatype = _custom_counter,
entryfield_validate = _custom_validate)
counters = (self._notcustom, self._custom)
Pmw.alignlabels(counters)
# Pack them all.
for counter in counters:
counter.pack(fill='both', expand=1, padx=10, pady=5)
def execute(self):
print 'Return pressed, value is', self._date.get()
specialword = 'A B C D E H'
def _custom_validate(text):
if string.find(specialword, text) == 0:
return 1
else:
return -1
def _custom_counter(text, factor, increment):
# increment is ignored here.
if string.find(specialword, text) == 0:
length = len(text)
if factor == 1:
if length >= len(specialword):
raise ValueError, 'maximum length reached'
return specialword[:length + 1]
else:
if length == 0:
raise ValueError, 'empty string'
return specialword[:length - 1]
else:
raise ValueError, 'bad string ' + text
######################################################################
# Create demo in root window for testing.
if __name__ == '__main__':
root = Tkinter.Tk()
Pmw.initialise(root)
root.title(title)
exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy)
exitButton.pack(side = 'bottom')
widget = Demo(root)
root.mainloop()
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