""" Demonstration of the Pmw ButtonBox megawidget.
"""

# Import Pmw from the sibling directory.
import sys
sys.path[:0] = ['../../..']

import Tkinter
import Pmw

class Demo:
    def __init__(self, parent):
	# Create and pack the ButtonBox.
	self.buttonBox = Pmw.ButtonBox(parent,
		labelpos = 'nw',
		label_text = 'ButtonBox:')
	self.buttonBox.pack(fill = 'both', expand = 1, padx = 10, pady = 10)

	# Add some buttons to the ButtonBox.
	self.buttonBox.add('OK', command = self.ok)
	self.buttonBox.add('Apply', command = self.apply)
	self.buttonBox.add('Cancel', command = self.cancel)

	# Set the default button (the one executed when <Return> is hit).
	self.buttonBox.setdefault('OK')
	parent.bind('<Return>', self._processReturnKey)
	parent.focus_set()

	# Make all the buttons the same width.
	self.buttonBox.alignbuttons()

    def _processReturnKey(self, event):
	self.buttonBox.invoke()

    def ok(self):
	print 'You clicked on OK'

    def apply(self):
	print 'You clicked on Apply'

    def cancel(self):
	print 'You clicked on Cancel'

######################################################################

# Create demo in root window for testing.
if __name__ == '__main__':
    root = Tkinter.Tk()
    Pmw.initialise(root, fontScheme = 'pmw1')
    root.title('Pmw ButtonBox demonstration')

    exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy)
    exitButton.pack(side = 'bottom')
    widget = Demo(root)
    root.mainloop()