#!/usr/bin/env python
"""
FASTMath software installer.

This can be run from the command line with:

curl --silent https://bitbucket.org/petsc/petsc/raw/60658920ec66ea33cc584d568c1da6e3ed8d2bf9/bin/FASTMathInstaller.py | python

I still cannot come up with a simple portable browser-based click to install to have this run due to people's security concerns.


This is written using the EasyGui.py python module
which is, for simplicity, included in this file

EasyGui provides an easy-to-use interface for simple GUI interaction
with a user.  It does not require the programmer to know anything about
tkinter, frames, widgets, callbacks or lambda.  All GUI interactions are
invoked by simple function calls that return results.

Documentation is in an accompanying file, easygui.txt.

WARNING about using EasyGui with IDLE
======================================

You may encounter problems using IDLE to run programs that use EasyGui. Try it
and find out.  EasyGui is a collection of Tkinter routines that run their own
event loops.  IDLE is also a Tkinter application, with its own event loop.  The
two may conflict, with the unpredictable results. If you find that you have
problems, try running your program outside of IDLE.

Note that EasyGui requires Tk release 8.0 or greater.
"""


EasyGuiRevisionInfo = " version 0.72 2004-06-20"

# see easygui.txt for revision history information

__all__ = ['ynbox'
	, 'ccbox'
	, 'boolbox'
	, 'indexbox'
	, 'msgbox'
	, 'buttonbox'
	, 'integerbox'
	, 'multenterbox'
	, 'enterbox'
	, 'choicebox'
	, 'codebox'
	, 'textbox'
	, 'diropenbox'
	, 'fileopenbox'
	, 'filesavebox'
	, 'multchoicebox'
	]

import sys
try:
  from Tkinter import *
except:
  sys.exit('Python is NOT installed with Tkinter on this system')

if TkVersion < 8.0 :
	print "\n" * 3
	print "*"*75
	print "Running Tk version:", TkVersion
	print "You must be using Tk version 8.0 or greater to use EasyGui."
	print "Terminating."
	print "*"*75
	print "\n" * 3
	sys.exit(0)


rootWindowPosition = "+40+100"
#rootWindowPosition = "+300+200"
import string

DEFAULT_FONT_FAMILY   = ("MS", "Sans", "Serif")
MONOSPACE_FONT_FAMILY = ("Courier")
DEFAULT_FONT_SIZE     = 10
BIG_FONT_SIZE         = 12
SMALL_FONT_SIZE       =  9
CODEBOX_FONT_SIZE     =  9
TEXTBOX_FONT_SIZE     = DEFAULT_FONT_SIZE

import tkFileDialog

#-------------------------------------------------------------------
# various boxes built on top of the basic buttonbox
#-------------------------------------------------------------------

def ynbox(message="Shall I continue?", title=""):
	"""Display a message box with choices of Yes and No.
	The default is "Yes".
	Returns returns 1 if "Yes" is chosen, or if
	the dialog is cancelled (which is interpreted as
	choosing the default).  Otherwise returns 0.

	If invoked without a message parameter, displays a generic request for a confirmation
	that the user wishes to continue.  So it can be used this way:

		if ynbox(): pass # continue
		else: sys.exit(0)  # exit the program
	"""

	choices = ["Yes", "No"]
	if title == None: title = ""
	return boolbox(message, title, choices)

def ccbox(message="Shall I continue?", title=""):
	"""Display a message box with choices of Continue and Cancel.
	The default is "Continue".
	Returns returns 1 if "Continue" is chosen, or if
	the dialog is cancelled (which is interpreted as
	choosing the default).  Otherwise returns 0.

	If invoked without a message parameter, displays a generic request for a confirmation
	that the user wishes to continue.  So it can be used this way:

		if ccbox(): pass # continue
		else: sys.exit(0)  # exit the program
	"""
	choices = ["Continue", "Cancel"]
	if title == None: title = ""
	return boolbox(message, title, choices)


def boolbox(message="Shall I continue?", title="", choices=["Yes","No"]):
	"""Display a boolean message box.
	The default is the first choice.
	Returns returns 1 if the first choice is chosen, or if
	the dialog is cancelled (which is interpreted as
	choosing the default).  Otherwise returns 0.
	"""
	if title == None:
		if message == "Shall I continue?": title = "Confirmation"
		else: title = ""


	reply = buttonbox(message, title, choices)
	if reply == choices[0]: return 1
	else: return 0


def indexbox(message="Shall I continue?", title="", choices=["Yes","No"]):
	"""Display a buttonbox with the specified choices.
	Return the index of the choice selected.
	"""
	reply = buttonbox(message, title, choices)
	index = -1
	for choice in choices:
		index = index + 1
		if reply == choice: return index



#-------------------------------------------------------------------
# msgbox
#-------------------------------------------------------------------
def msgbox(message="Shall I continue?", title="", buttonMessage="OK"):
	"""Display a messagebox
	"""
	choices = [buttonMessage]
	reply = buttonbox(message, title, choices)
	return reply


#-------------------------------------------------------------------
# buttonbox
#-------------------------------------------------------------------
def buttonbox(message="Shall I continue?", title="", choices = ["Button1", "Button2", "Button3"],fontSize = DEFAULT_FONT_SIZE,message2 = None):
	"""Display a message, a title, and a set of buttons.
	The buttons are defined by the members of the choices list.
	Return the text of the button that the user selected.
	"""

	global root, __replyButtonText, __widgetTexts, buttonsFrame

	if title == None: title = ""
	if message == None: message = "This is an example of a buttonbox."

	# Initialize __replyButtonText to the first choice.
	# This is what will be used if the window is closed by the close button.
	__replyButtonText = choices[0]

	root = Tk()
	root.protocol('WM_DELETE_WINDOW', denyWindowManagerClose )
	root.title(title)
	root.iconname('Dialog')
	root.geometry(rootWindowPosition)
	root.minsize(600, 400)

	# ------------- define the frames --------------------------------------------
	messageFrame = Frame(root)
	messageFrame.pack(side=TOP, fill=BOTH)

	buttonsFrame = Frame(root)
	buttonsFrame.pack(side=BOTTOM, fill=BOTH)

	# -------------------- place the widgets in the frames -----------------------
	messageWidget = Message(messageFrame, text=message, width=len(message)*fontSize+4)
	messageWidget.configure(font=(DEFAULT_FONT_FAMILY,fontSize))
	messageWidget.pack(side=TOP, expand=YES, fill=X, padx='3m', pady='3m')

        if message2:
  	  messageWidget = Message(messageFrame, text=message2, width=len(message)*fontSize+4)
	  messageWidget.configure(font=(DEFAULT_FONT_FAMILY,DEFAULT_FONT_SIZE))
	  messageWidget.pack(expand=YES, fill=X, padx='3m', pady='3m')

	__put_buttons_in_buttonframe(choices)

	# -------------- the action begins -----------
	# put the focus on the first button
	__firstWidget.focus_force()
	root.mainloop()
	root.destroy()
	return __replyButtonText

#-------------------------------------------------------------------
# integerbox
#-------------------------------------------------------------------
def integerbox(message="Enter something.", title=""
	, argDefault=None, argLowerBound=0, argUpperBound=99):
	"""Show a box in which a user can enter an integer.
	In addition to arguments for message and title, this function accepts
	integer arguments for default_value, lowerbound, and upperbound.

	The default_value argument may be None.

	When the user enters some text, the text is checked to verify
	that it can be converted to an integer between the lowerbound and upperbound.

	If it can be, the integer (not the text) is returned.

	If it cannot, then an error message is displayed, and the integerbox is
		redisplayed.

	If the user cancels the operation, the default value is returned.
	"""

	if argDefault == None:
		argDefault = ""
	elif argDefault == "":
		pass
	elif type(argDefault) != type(1):
		raise AssertionError("integerbox received a non-integer default value of "
				+ str(argDefault)
				, "Error")
		raise "Argument TYPE error in call to EasyGui integerbox"

	if type(argLowerBound) != type(1):
		raise AssertionError("integerbox received a non-integer default value of "
				+ str(argLowerBound)
				, "Error")
		raise "Argument TYPE error in call to EasyGui integerbox"


	if type(argUpperBound) != type(1):
		raise AssertionError("integerbox received a non-integer default value of "
				+ str(argUpperBound)
				, "Error")
		raise "Argument TYPE error in call to EasyGui integerbox"

	if message == "":
		message = ("Enter an integer between " + str(argLowerBound)
			+ " and "
			+ str(argUpperBound)
			)

	while 1:
		result = enterbox(message, title, str(argDefault))
		if result == None:
			return argDefault

		try:
			myInteger = int(result)
		except:
			msgbox ("The value that you entered is not an integer.", "Error")
			continue

		if myInteger >= argLowerBound and myInteger <= argUpperBound:
			return myInteger
		else:
			msgbox ("The value that you entered is not between the lower bound of "
				+ str(argLowerBound)
				+ " and the upper bound of "
				+ str(argUpperBound)
				+ "."
				, "Error")

#-------------------------------------------------------------------
# multenterbox
#-------------------------------------------------------------------
def multenterbox(message="Fill in values for the fields."
	, title=""
	, argListOfFieldNames  = []
	, argListOfFieldValues = []
	):
	"""Show screen with multiple data entry fields.
	The third argument is a list of fieldnames.
	the forth argument is a list of field values.

	If there are fewer values than names, the list of values is padded with
	empty strings until the number of values is the same as the number of names.

	If there are more values than names, the list of values
	is truncated so that there are as many values as names.

	Returns a list of the values of the fields,
	or None if the user cancels the operation.

	----------------------------------------------------------------------
	"""
        if not argListOfFieldNames:
                argListOfFieldNames = ['']
                for i in range(0,len(argListOfFieldValues)+2):
                       argListOfFieldNames.append('')
	return __multfillablebox(
		message,title,argListOfFieldNames,argListOfFieldValues,None)

def __multfillablebox(message="Fill in values for the fields."
	, title=""
	, argListOfFieldNames  = []
	, argListOfFieldValues = []
	, argMaskCharacter = None
	):

	global root, __multenterboxText, __multenterboxDefaultText, cancelButton, entryWidget, okButton

	if title == None: title == ""
	choices = ["OK", "Cancel"]
	if len(argListOfFieldNames) == 0: return None

	if   len(argListOfFieldValues) == len(argListOfFieldNames): pass
	elif len(argListOfFieldValues) >  len(argListOfFieldNames):
		argListOfFieldNames = argListOfFieldNames[0:len(argListOfFieldValues)]
	else:
		while len(argListOfFieldValues) < len(argListOfFieldNames):
			argListOfFieldValues.append("")

	root = Tk()
	root.protocol('WM_DELETE_WINDOW', denyWindowManagerClose )
	root.title(title)
	root.iconname('Dialog')
	root.geometry(rootWindowPosition)
	root.bind("<Escape>", __multenterboxCancel)
	root.minsize(600, 400)

	# -------------------- put subframes in the root --------------------
	messageFrame = Frame(root)
	messageFrame.pack(side=TOP, fill=BOTH)

	#-------------------- the message widget ----------------------------
	messageWidget = Message(messageFrame, width="4.5i", text=message)
	messageWidget.configure(font=(DEFAULT_FONT_FAMILY,DEFAULT_FONT_SIZE))
	messageWidget.pack(side=RIGHT, expand=1, fill=BOTH, padx='3m', pady='3m')

	global entryWidgets
	entryWidgets = []

	lastWidgetIndex = len(argListOfFieldNames) - 1

        max = 40
        for i in range(len(argListOfFieldNames)):
                if len(argListOfFieldValues[i]) > max: max = len(argListOfFieldValues[i])+2
	for widgetIndex in range(len(argListOfFieldNames)):
		argFieldName  = argListOfFieldNames[widgetIndex]
		argFieldValue = argListOfFieldValues[widgetIndex]
		entryFrame = Frame(root)
		entryFrame.pack(side=TOP, fill=BOTH)

		# --------- entryWidget ----------------------------------------------
		labelWidget = Label(entryFrame, text=argFieldName)
		labelWidget.pack(side=LEFT)

		entryWidgets.append(Entry(entryFrame, width=max))
		entryWidgets[widgetIndex].configure(font=(DEFAULT_FONT_FAMILY,BIG_FONT_SIZE))
		entryWidgets[widgetIndex].pack(side=RIGHT, padx="3m")
		entryWidgets[widgetIndex].bind("<Return>", __multenterboxGetText)
		entryWidgets[widgetIndex].bind("<Escape>", __multenterboxCancel)

		# put text into the entryWidget
		entryWidgets[widgetIndex].insert(0,argFieldValue)
		widgetIndex += 1

	# ------------------ ok button -------------------------------

	buttonsFrame = Frame(root)
	buttonsFrame.pack(side=BOTTOM, fill=BOTH)


	okButton = Button(buttonsFrame, takefocus=1, text="OK")
	okButton.pack(expand=1, side=LEFT, padx='3m', pady='3m', ipadx='2m', ipady='1m')
	okButton.bind("<Return>"  , __multenterboxGetText)
	okButton.bind("<Button-1>", __multenterboxGetText)

	# ------------------ cancel button -------------------------------
	cancelButton = Button(buttonsFrame, takefocus=1, text="Cancel")
	cancelButton.pack(expand=1, side=RIGHT, padx='3m', pady='3m', ipadx='2m', ipady='1m')
	cancelButton.bind("<Return>"  , __multenterboxCancel)
	cancelButton.bind("<Button-1>", __multenterboxCancel)

	# ------------------- time for action! -----------------
	entryWidgets[0].focus_force()    # put the focus on the entryWidget
	root.mainloop()  # run it!

	# -------- after the run has completed ----------------------------------
	root.destroy()  # button_click didn't destroy root, so we do it now
	return __multenterboxText


def __multenterboxGetText(event):
	global root, __multenterboxText, entryWidget
	__multenterboxText = []
	global entryWidgets
	for entryWidget in entryWidgets:
		__multenterboxText.append(entryWidget.get())

	root.quit()

def __multenterboxCancel(event):
	global root,  __multenterboxDefaultText, __multenterboxText
	__multenterboxText = None

	root.quit()


#-------------------------------------------------------------------
# enterbox
#-------------------------------------------------------------------
def enterbox(message="Enter something.", title="", argDefaultText=""):
	"""Show a box in which a user can enter some text.
	You may optionally specify some default text, which will appear in the
	enterbox when it is displayed.
	Returns the text that the user entered, or None if he cancels the operation.
	"""
	return __fillablebox(message, title, argDefaultText, None)

def __fillablebox(message, title, argDefaultText, argMaskCharacter):
	"""Show a box in which a user can enter some text.
	You may optionally specify some default text, which will appear in the
	enterbox when it is displayed.
	Returns the text that the user entered, or None if he cancels the operation.
	"""

	global root, __enterboxText, __enterboxDefaultText, cancelButton, entryWidget, okButton

	if title == None: title == ""
	if argDefaultText == None: argDefaultText = ""
	__enterboxDefaultText = argDefaultText
	__enterboxText        = __enterboxDefaultText
	choices = ["OK", "Cancel"]

	root = Tk()
	root.protocol('WM_DELETE_WINDOW', denyWindowManagerClose )
	root.title(title)
	root.iconname('Dialog')
	root.geometry(rootWindowPosition)
	root.bind("<Escape>", __enterboxCancel)
	root.minsize(600, 400)

	# -------------------- put subframes in the root --------------------
	messageFrame = Frame(root)
	messageFrame.pack(side=TOP, fill=BOTH)

	entryFrame = Frame(root)
	entryFrame.pack(side=TOP, fill=BOTH)

	buttonsFrame = Frame(root)
	buttonsFrame.pack(side=BOTTOM, fill=BOTH)

	#-------------------- the message widget ----------------------------
	messageWidget = Message(messageFrame, width="4.5i", text=message)
	messageWidget.configure(font=(DEFAULT_FONT_FAMILY,DEFAULT_FONT_SIZE))
	messageWidget.pack(side=RIGHT, expand=1, fill=BOTH, padx='3m', pady='3m')

	# --------- entryWidget ----------------------------------------------
	entryWidget = Entry(entryFrame, width=40)
	entryWidget.configure(font=(DEFAULT_FONT_FAMILY,BIG_FONT_SIZE))
	if argMaskCharacter:
		entryWidget.configure(show=argMaskCharacter)
	entryWidget.pack(side=LEFT, padx="3m")
	entryWidget.bind("<Return>", __enterboxGetText)
	entryWidget.bind("<Escape>", __enterboxCancel)
	# put text into the entryWidget
	entryWidget.insert(0,__enterboxDefaultText)

	# ------------------ ok button -------------------------------
	okButton = Button(buttonsFrame, takefocus=1, text="OK")
	okButton.pack(expand=1, side=LEFT, padx='3m', pady='3m', ipadx='2m', ipady='1m')
	okButton.bind("<Return>"  , __enterboxGetText)
	okButton.bind("<Button-1>", __enterboxGetText)

	# ------------------ (possible) restore button -------------------------------
	if argDefaultText != None:
		# make a button to restore the default text
		restoreButton = Button(buttonsFrame, takefocus=1, text="Restore default")
		restoreButton.pack(expand=1, side=LEFT, padx='3m', pady='3m', ipadx='2m', ipady='1m')
		restoreButton.bind("<Return>"  , __enterboxRestore)
		restoreButton.bind("<Button-1>", __enterboxRestore)

	# ------------------ cancel button -------------------------------
	cancelButton = Button(buttonsFrame, takefocus=1, text="Cancel")
	cancelButton.pack(expand=1, side=RIGHT, padx='3m', pady='3m', ipadx='2m', ipady='1m')
	cancelButton.bind("<Return>"  , __enterboxCancel)
	cancelButton.bind("<Button-1>", __enterboxCancel)

	# ------------------- time for action! -----------------
	entryWidget.focus_force()    # put the focus on the entryWidget
	root.mainloop()  # run it!

	# -------- after the run has completed ----------------------------------
	root.destroy()  # button_click didn't destroy root, so we do it now
	return __enterboxText



def __enterboxGetText(event):
	global root, __enterboxText, entryWidget
	__enterboxText = entryWidget.get()

	root.quit()

def __enterboxRestore(event):
	global root, __enterboxText, entryWidget
	entryWidget.delete(0,len(entryWidget.get()))
	entryWidget.insert(0, __enterboxDefaultText)

def __enterboxCancel(event):
	global root,  __enterboxDefaultText, __enterboxText
	__enterboxText = None

	root.quit()

def denyWindowManagerClose():
	""" don't allow WindowManager close
	"""
	x = Tk()
	x.withdraw()
	x.bell()
	x.destroy()



#-------------------------------------------------------------------
# choicebox and multchoicebox
#-------------------------------------------------------------------

def multchoicebox(message="Pick as many items as you like.", title=""
	, choices=["program logic error - no choices specified"]
	):
	"""Present the user with a list of choices.
	allow him to select multiple items and return them in a list.
	if the user doesn't choose anything from the list, return the empty list.
	return None if he cancelled selection.
	"""
	global __choiceboxMultipleSelect
	__choiceboxMultipleSelect = 1
	return __choicebox(message, title, choices)


def choicebox(message="Pick something.", title=""
	, choices=["program logic error - no choices specified"]
	):
	"""Present the user with a list of choices.
	return the choice that he selects.
	return None if he cancels the selection selection.
	"""
	global __choiceboxMultipleSelect
	__choiceboxMultipleSelect = 0
	return __choicebox(message, title, choices)


def __choicebox(message, title, choices):
	"""internal routine to support choicebox() and multchoicebox()
	"""
	global root, __choiceboxResults, choiceboxWidget, defaultText
	global choiceboxWidget, choiceboxChoices

	# If choices is a tuple, we make it a list so we can sort it.
	# If choices is already a list, we make a new list, so that when
	# we sort the choices, we don't affect the list object that we
	# were given.
	choices = list(choices)

	# make sure all choices are strings
	for index in range(len(choices)):
            choices[index] = str(choices[index])

	choiceboxButtons = ["OK", "Cancel"]

	lines_to_show = min(len(choices)+1, 20)

	if title == None: title = ""

	# Initialize __choiceboxResults
	# This is the value that will be returned if the user clicks the close icon
	__choiceboxResults = None

	root = Tk()
	root.protocol('WM_DELETE_WINDOW', denyWindowManagerClose )
	screen_width = root.winfo_screenwidth()
	screen_height = root.winfo_screenheight()
	root_width = int((screen_width * 0.8))
	root_height = int((screen_height * 0.5))
	root_xpos = int((screen_width * 0.1))
	root_ypos = int((screen_height * 0.05))

	root.title(title)
	root.iconname('Dialog')
#	rootWindowPosition = "+0+0"
	root.geometry(rootWindowPosition)
	root.expand=NO
#	root.minsize(root_width, root_height)
	root.minsize(600, 400)
#	rootWindowPosition = "+" + str(root_xpos) + "+" + str(root_ypos)
#	root.geometry(rootWindowPosition)

	# ---------------- put the frames in the window -----------------------------------------
	message_and_buttonsFrame = Frame(root)
	message_and_buttonsFrame.pack(side=TOP, fill=X, expand=NO)

	messageFrame = Frame(message_and_buttonsFrame)
	messageFrame.pack(side=LEFT, fill=X, expand=YES)

	buttonsFrame = Frame(message_and_buttonsFrame)
	buttonsFrame.pack(side=RIGHT, expand=NO, pady=0)

	choiceboxFrame = Frame(root)
	choiceboxFrame.pack(side=BOTTOM, fill=BOTH, expand=YES)

	# -------------------------- put the widgets in the frames ------------------------------

	# ---------- put a message widget in the message frame-------------------
	messageWidget = Message(messageFrame, anchor=NW, text=message, width=int(root_width * 0.9))
	messageWidget.configure(font=(DEFAULT_FONT_FAMILY,DEFAULT_FONT_SIZE))
	messageWidget.pack(side=LEFT, expand=YES, fill=BOTH, padx='1m', pady='1m')

	# --------  put the choiceboxWidget in the choiceboxFrame ---------------------------
	choiceboxWidget = Listbox(choiceboxFrame
		, height=lines_to_show
		, borderwidth="1m"
		, relief="flat"
		, bg="white"
		)

	if __choiceboxMultipleSelect:
		choiceboxWidget.configure(selectmode=MULTIPLE)

	choiceboxWidget.configure(font=(DEFAULT_FONT_FAMILY,DEFAULT_FONT_SIZE))

	# add a vertical scrollbar to the frame
	rightScrollbar = Scrollbar(choiceboxFrame, orient=VERTICAL, command=choiceboxWidget.yview)
	choiceboxWidget.configure(yscrollcommand = rightScrollbar.set)

	# add a horizontal scrollbar to the frame
	bottomScrollbar = Scrollbar(choiceboxFrame, orient=HORIZONTAL, command=choiceboxWidget.xview)
	choiceboxWidget.configure(xscrollcommand = bottomScrollbar.set)

	# pack the Listbox and the scrollbars.  Note that although we must define
	# the textbox first, we must pack it last, so that the bottomScrollbar will
	# be located properly.

	bottomScrollbar.pack(side=BOTTOM, fill = X)
	rightScrollbar.pack(side=RIGHT, fill = Y)

	choiceboxWidget.pack(side=LEFT, padx="1m", pady="1m", expand=YES, fill=BOTH)

	#---------------------------------------------------
	# sort the choices
	# eliminate duplicates
	# put the choices into the choiceboxWidget
	#---------------------------------------------------
	for index in range(len(choices)):
		choices[index] == str(choices[index])

#	choices.sort( lambda x,y: cmp(x.lower(),    y.lower())) # case-insensitive sort
	lastInserted = None
	choiceboxChoices = []
	for choice in choices:
		if choice == lastInserted: pass
		else:
			choiceboxWidget.insert(END, choice)
			choiceboxChoices.append(choice)
			lastInserted = choice

	root.bind('<Any-Key>', KeyboardListener)

	# put the buttons in the buttonsFrame
	if len(choices) > 0:
		okButton = Button(buttonsFrame, takefocus=YES, text="OK", height=1, width=6)
		okButton.pack(expand=NO, side=TOP,  padx='2m', pady='1m', ipady="1m", ipadx="2m")
		okButton.bind("<Return>", __choiceboxGetChoice)
		okButton.bind("<Button-1>",__choiceboxGetChoice)

		# now bind the keyboard events
		choiceboxWidget.bind("<Return>", __choiceboxGetChoice)
		choiceboxWidget.bind("<Double-Button-1>", __choiceboxGetChoice)
	else:
		# now bind the keyboard events
		choiceboxWidget.bind("<Return>", __choiceboxCancel)
		choiceboxWidget.bind("<Double-Button-1>", __choiceboxCancel)

	cancelButton = Button(buttonsFrame, takefocus=YES, text="Cancel", height=1, width=6)
	cancelButton.pack(expand=NO, side=BOTTOM, padx='2m', pady='1m', ipady="1m", ipadx="2m")
	cancelButton.bind("<Return>", __choiceboxCancel)
	cancelButton.bind("<Button-1>", __choiceboxCancel)

	# add special buttons for multiple select features
	if len(choices) > 0 and __choiceboxMultipleSelect:
		selectionButtonsFrame = Frame(messageFrame)
		selectionButtonsFrame.pack(side=RIGHT, fill=Y, expand=NO)

		selectAllButton = Button(selectionButtonsFrame, text="Select All", height=1, width=6)
		selectAllButton.bind("<Button-1>",__choiceboxSelectAll)
		selectAllButton.pack(expand=NO, side=TOP,  padx='2m', pady='1m', ipady="1m", ipadx="2m")

		clearAllButton = Button(selectionButtonsFrame, text="Clear All", height=1, width=6)
		clearAllButton.bind("<Button-1>",__choiceboxClearAll)
		clearAllButton.pack(expand=NO, side=TOP,  padx='2m', pady='1m', ipady="1m", ipadx="2m")


	# -------------------- bind some keyboard events ----------------------------
	root.bind("<Escape>", __choiceboxCancel)

	# --------------------- the action begins -----------------------------------
	# put the focus on the choiceboxWidget, and the select highlight on the first item
	#choiceboxWidget.select_set(0)
	choiceboxWidget.focus_force()

	# --- run it! -----
	root.mainloop()

	root.destroy()
	return __choiceboxResults


def __choiceboxGetChoice(event):
	global root, __choiceboxResults, choiceboxWidget

	if __choiceboxMultipleSelect:
		__choiceboxResults = [choiceboxWidget.get(index) for index in choiceboxWidget.curselection()]

	else:
		choice_index = choiceboxWidget.curselection()
		__choiceboxResults = choiceboxWidget.get(choice_index)

	# print "Debugging> mouse-event=", event, " event.type=", event.type
	# print "Debugging> choice =", choice_index, __choiceboxResults
	root.quit()


def __choiceboxSelectAll(event):
	global choiceboxWidget, choiceboxChoices
	choiceboxWidget.selection_set(0, len(choiceboxChoices)-1)

def __choiceboxClearAll(event):
	global choiceboxWidget, choiceboxChoices
	choiceboxWidget.selection_clear(0, len(choiceboxChoices)-1)



def __choiceboxCancel(event):
	global root, __choiceboxResults

	__choiceboxResults = None
	root.quit()


def KeyboardListener(event):
	global choiceboxChoices, choiceboxWidget
	key = event.keysym
	if len(key) <= 1:
		if key in string.printable:
			# Find the key in the list.
			# before we clear the list, remember the selected member
			try:
				start_n = int(choiceboxWidget.curselection()[0])
			except IndexError:
				start_n = -1

			## clear the selection.
			choiceboxWidget.selection_clear(0, 'end')

			## start from previous selection +1
			for n in range(start_n+1, len(choiceboxChoices)):
				item = choiceboxChoices[n]
				if item[0].lower() == key.lower():
					choiceboxWidget.selection_set(first=n)
					choiceboxWidget.see(n)
					return
			else:
				# has not found it so loop from top
				for n in range(len(choiceboxChoices)):
					item = choiceboxChoices[n]
					if item[0].lower() == key.lower():
						choiceboxWidget.selection_set(first = n)
						choiceboxWidget.see(n)
						return

				# nothing matched -- we'll look for the next logical choice
				for n in range(len(choiceboxChoices)):
					item = choiceboxChoices[n]
					if item[0].lower() > key.lower():
						if n > 0:
							choiceboxWidget.selection_set(first = (n-1))
						else:
							choiceboxWidget.selection_set(first = 0)
						choiceboxWidget.see(n)
						return

				# still no match (nothing was greater than the key)
				# we set the selection to the first item in the list
				lastIndex = len(choiceboxChoices)-1
				choiceboxWidget.selection_set(first = lastIndex)
				choiceboxWidget.see(lastIndex)
				return

#-------------------------------------------------------------------
# codebox
#-------------------------------------------------------------------

def codebox(message="", title="", text=""):
	"""
	Display some text in a monospaced font, with no line wrapping.
	This function is suitable for displaying code and text that is
	formatted using spaces.

	The text parameter should be a string, or a list or tuple of lines to be
	displayed in the textbox.
	"""
	textbox(message, title, text, codebox=1 )

#-------------------------------------------------------------------
# textbox
#-------------------------------------------------------------------
def textbox(message="", title="", text="", codebox=0):
	"""Display some text in a proportional font with line wrapping at word breaks.
	This function is suitable for displaying general written text.

	The text parameter should be a string, or a list or tuple of lines to be
	displayed in the textbox.
	"""

	if message == None: message = ""
	if title == None: title = ""

	global root, __replyButtonText, __widgetTexts, buttonsFrame
	choices = ["0K"]
	__replyButtonText = choices[0]


	root = Tk()

	root.protocol('WM_DELETE_WINDOW', denyWindowManagerClose )

	screen_width = root.winfo_screenwidth()
	screen_height = root.winfo_screenheight()
	root_width = int((screen_width * 0.8))
	root_height = int((screen_height * 0.5))
	root_xpos = int((screen_width * 0.1))
	root_ypos = int((screen_height * 0.05))

	root.title(title)
	root.iconname('Dialog')
#	rootWindowPosition = "+0+0"
	root.geometry(rootWindowPosition)
	root.expand=NO
#	root.minsize(root_width, root_height)
	root.minsize(600, 400)
#	rootWindowPosition = "+" + str(root_xpos) + "+" + str(root_ypos)
#	root.geometry(rootWindowPosition)


	mainframe = Frame(root)
	mainframe.pack(side=TOP, fill=BOTH, expand=YES)

	# ----  put frames in the window -----------------------------------
	# we pack the textboxFrame first, so it will expand first
	textboxFrame = Frame(mainframe, borderwidth=3)
	textboxFrame.pack(side=BOTTOM , fill=BOTH, expand=YES)

	message_and_buttonsFrame = Frame(mainframe)
	message_and_buttonsFrame.pack(side=TOP, fill=X, expand=NO)

	messageFrame = Frame(message_and_buttonsFrame)
	messageFrame.pack(side=LEFT, fill=X, expand=YES)

	buttonsFrame = Frame(message_and_buttonsFrame)
	buttonsFrame.pack(side=RIGHT, expand=NO)

	# -------------------- put widgets in the frames --------------------

	# put a textbox in the top frame
	if codebox:
		character_width = int((root_width * 0.6) / CODEBOX_FONT_SIZE)
		textbox = Text(textboxFrame,height=25,width=character_width, padx="2m", pady="1m")
		textbox.configure(wrap=NONE)
		textbox.configure(font=(MONOSPACE_FONT_FAMILY, CODEBOX_FONT_SIZE))

	else:
		character_width = int((root_width * 0.6) / SMALL_FONT_SIZE)
		textbox = Text(
			textboxFrame
			, height=25
			, width=character_width
			, padx="2m"
			, pady="1m"
			)
		textbox.configure(wrap=WORD)
		textbox.configure(font=(DEFAULT_FONT_FAMILY,TEXTBOX_FONT_SIZE))


	# some simple keybindings for scrolling
	mainframe.bind("<Next>" , textbox.yview_scroll( 1,PAGES))
	mainframe.bind("<Prior>", textbox.yview_scroll(-1,PAGES))

	mainframe.bind("<Right>", textbox.xview_scroll( 1,PAGES))
	mainframe.bind("<Left>" , textbox.xview_scroll(-1,PAGES))

	mainframe.bind("<Down>", textbox.yview_scroll( 1,UNITS))
	mainframe.bind("<Up>"  , textbox.yview_scroll(-1,UNITS))


	# add a vertical scrollbar to the frame
	rightScrollbar = Scrollbar(textboxFrame, orient=VERTICAL, command=textbox.yview)
	textbox.configure(yscrollcommand = rightScrollbar.set)

	# add a horizontal scrollbar to the frame
	bottomScrollbar = Scrollbar(textboxFrame, orient=HORIZONTAL, command=textbox.xview)
	textbox.configure(xscrollcommand = bottomScrollbar.set)

	# pack the textbox and the scrollbars.  Note that although we must define
	# the textbox first, we must pack it last, so that the bottomScrollbar will
	# be located properly.

	# Note that we need a bottom scrollbar only for code.
	# Text will be displayed with wordwrap, so we don't need to have a horizontal
	# scroll for it.
	if codebox:
		bottomScrollbar.pack(side=BOTTOM, fill=X)
	rightScrollbar.pack(side=RIGHT, fill=Y)

	textbox.pack(side=LEFT, fill=BOTH, expand=YES)


	# ---------- put a message widget in the message frame-------------------
	messageWidget = Message(messageFrame, anchor=NW, text=message, width=int(root_width * 0.9))
	messageWidget.configure(font=(DEFAULT_FONT_FAMILY,DEFAULT_FONT_SIZE))
	messageWidget.pack(side=LEFT, expand=YES, fill=BOTH, padx='1m', pady='1m')

	# put the buttons in the buttonsFrame
	okButton = Button(buttonsFrame, takefocus=YES, text="OK", height=1, width=6)
	okButton.pack(expand=NO, side=TOP,  padx='2m', pady='1m', ipady="1m", ipadx="2m")
	okButton.bind("<Return>"  , __textboxOK)
	okButton.bind("<Button-1>", __textboxOK)
	okButton.bind("<Escape>"  , __textboxOK)


	# ----------------- the action begins ----------------------------------------
	try:
		# load the text into the textbox
		if type(text) == type("abc"): pass
		else:
			try:
				text = "".join(text)  # convert a list or a tuple to a string
			except:
				msgbox("Exception when trying to convert "+ str(type(text)) + " to text in textbox")
				sys.exit(16)
		textbox.insert(END,text, "normal")

		# disable the textbox, so the text cannot be edited
		textbox.configure(state=DISABLED)
	except:
		msgbox("Exception when trying to load the textbox.")
		sys.exit(16)

	try:
		okButton.focus_force()
	except:
		msgbox("Exception when trying to put focus on okButton.")
		sys.exit(16)

	root.mainloop()
	root.destroy()
	return __replyButtonText

def __textboxOK(event):
	global root

	root.quit()



#-------------------------------------------------------------------
# diropenbox
#-------------------------------------------------------------------
def diropenbox(msg=None, title=None, argInitialDir=None):
	"""A dialog to get a directory name.
	Note that the msg argument, if specified, is ignored.

	Returns the name of a directory, or None if user chose to cancel.

	If an initial directory is specified in argument 3,
	and that directory exists, then the
	dialog box will start with that directory.
	"""
	root = Tk()
	root.withdraw()
	if argInitialDir == None:
		f = tkFileDialog.askdirectory(parent=root, title=title)
	else:
		f = tkFileDialog.askdirectory(parent=root, title=title, initialdir=argInitialDir)
	if f == "": return None
	return f

#-------------------------------------------------------------------
# fileopenbox
#-------------------------------------------------------------------
def fileopenbox(msg=None, title=None, argInitialFile=None):
	"""A dialog to get a file name.
	Returns the name of a file, or None if user chose to cancel.

	if argInitialFile contains a valid filename, the dialog will
	be positioned at that file when it appears.
	"""
	root = Tk()
	root.withdraw()
	f = tkFileDialog.askopenfilename(parent=root,title=title, initialfile=argInitialFile)
	if f == "": return None
	return f


#-------------------------------------------------------------------
# filesavebox
#-------------------------------------------------------------------
def filesavebox(msg=None, title=None, argInitialFile=None):
	"""A file to get the name of a file to save.
	Returns the name of a file, or None if user chose to cancel.

	if argInitialFile contains a valid filename, the dialog will
	be positioned at that file when it appears.
	"""
	root = Tk()
	root.withdraw()
	f = tkFileDialog.asksaveasfilename(parent=root, title=title, initialfile=argInitialFile)
	if f == "": return None
	return f


#-------------------------------------------------------------------
# utility routines
#-------------------------------------------------------------------
# These routines are used by several other functions in the EasyGui module.

def __buttonEvent(event):
	"""Handle an event that is generated by a person clicking a button.
	"""
	global  root, __widgetTexts, __replyButtonText
	__replyButtonText = __widgetTexts[event.widget]
	root.quit() # quit the main loop


def __put_buttons_in_buttonframe(choices):
	"""Put the buttons in the buttons frame
	"""
	global __widgetTexts, __firstWidget, buttonsFrame

	__widgetTexts = {}
	i = 0

	for buttonText in choices:
		tempButton = Button(buttonsFrame, takefocus=1, text=buttonText)
		tempButton.pack(expand=YES, side=LEFT, padx='1m', pady='1m', ipadx='2m', ipady='1m')

		# remember the text associated with this widget
		__widgetTexts[tempButton] = buttonText

		# remember the first widget, so we can put the focus there
		if i == 0:
			__firstWidget = tempButton
			i = 1

		# bind the keyboard events to the widget
		tempButton.bind("<Return>", __buttonEvent)
		tempButton.bind("<Button-1>", __buttonEvent)


#-------------------------------------------------------------------
# test driver code
#-------------------------------------------------------------------


def _test():
	# simple way to clear the console
	print "\n" * 100
	# START DEMONSTRATION DATA ===================================================
	choices_abc = ["This is choice 1", "And this is choice 2"]
	message = "Pick one! This is a huge choice, and you've got to make the right one " \
		"or you will surely mess up the rest of your life, and the lives of your " \
		"friends and neighbors!"
	title = ""

	# ============================= define a code snippet =========================
	code_snippet = ("dafsdfa dasflkj pp[oadsij asdfp;ij asdfpjkop asdfpok asdfpok asdfpok"*3) +"\n"+\
"""# here is some dummy Python code
for someItem in myListOfStuff:
	do something(someItem)
	do something()
	do something()
	if somethingElse(someItem):
		doSomethingEvenMoreInteresting()

"""*16
	#======================== end of code snippet ==============================

	#================================= some text ===========================
	text_snippet = ((\
"""It was the best of times, and it was the worst of times.  The rich ate cake, and the poor had cake recommended to them, but wished only for enough cash to buy bread.  The time was ripe for revolution! """ \
*5)+"\n\n")*10

	#===========================end of text ================================

	intro_message = ("Pick the kind of box that you wish to demo.\n\n"
	 + "In EasyGui, all GUI interactions are invoked by simple function calls.\n\n" +
	"EasyGui is different from other GUIs in that it is NOT event-driven.  It allows" +
	" you to program in a traditional linear fashion, and to put up dialogs for simple" +
	" input and output when you need to. If you are new to the event-driven paradigm" +
	" for GUIs, EasyGui will allow you to be productive with very basic tasks" +
	" immediately. Later, if you wish to make the transition to an event-driven GUI" +
	" paradigm, you can move to an event-driven style with a more powerful GUI package" +
	"such as anygui, PythonCard, Tkinter, wxPython, etc."
	+ "\n\nEasyGui is running Tk version: " + str(TkVersion)
	)

	#========================================== END DEMONSTRATION DATA


	while 1: # do forever
		choices = [
			"msgbox",
			"buttonbox",
			"choicebox",
			"multchoicebox",
			"textbox",
			"ynbox",
			"ccbox",
			"enterbox",
			"codebox",
			"integerbox",
			"boolbox",
			"indexbox",
			"filesavebox",
			"fileopenbox",
			"multenterbox",
			"diropenbox"

			]
		choice = choicebox(intro_message, "EasyGui " + EasyGuiRevisionInfo, choices)

		if choice == None: return

		reply = choice.split()

		if   reply[0] == "msgbox":
			reply = msgbox("short message", "This is a long title")
			print "Reply was:", reply

		elif reply[0] == "buttonbox":
			reply = buttonbox()
			print "Reply was:", reply

			reply = buttonbox(message, "Demo of Buttonbox with many, many buttons!", choices)
			print "Reply was:", reply

		elif reply[0] == "boolbox":
			reply = boolbox()
			print "Reply was:", reply

		elif reply[0] == "integerbox":
			reply = integerbox(
				"Enter a number between 3 and 333",
				"Demo: integerbox WITH a default value",
				222, 3, 333)
			print "Reply was:", reply

			reply = integerbox(
				"Enter a number between 0 and 99",
				"Demo: integerbox WITHOUT a default value"
				)
			print "Reply was:", reply

		elif reply[0] == "diropenbox":
			title = "Demo of diropenbox"
			msg = "This is a test of the diropenbox.\n\nPick the directory that you wish to open."
			d = diropenbox(msg, title)
			print "You chose directory...:", d

		elif reply[0] == "fileopenbox":
			f = fileopenbox()
			print "You chose to open file:", f

		elif reply[0] == "filesavebox":
			f = filesavebox()
			print "You chose to save file:", f

		elif reply[0] == "indexbox":
			title = reply[0]
			msg   =  "Demo of " + reply[0]
			choices = ["Choice1", "Choice2", "Choice3", "Choice4"]
			reply = indexbox(msg, title, choices)
			print "Reply was:", reply

		elif reply[0] == "enterbox":
			reply = enterbox("Enter the name of your best friend:", "Love!", "Suzy Smith")
			print "Reply was:", str(reply)

			reply = enterbox("Enter the name of your worst enemy:", "Hate!")
			print "Reply was:", str(reply)

		elif reply[0] == "ynbox":
			reply = ynbox(message, title)
			print "Reply was:", reply

		elif reply[0] == "ccbox":
			reply = ccbox(message)
			print "Reply was:", reply

		elif reply[0] == "choicebox":
			longchoice = "This is an example of a very long option which you may or may not wish to choose."*2
			listChoices = ["nnn", "ddd", "eee", "fff", "aaa", longchoice
					, "aaa", "bbb", "ccc", "ggg", "hhh", "iii", "jjj", "kkk", "LLL", "mmm" , "nnn", "ooo", "ppp", "qqq", "rrr", "sss", "ttt", "uuu", "vvv"]

			message = "Pick something. " + ("A wrapable sentence of text ?! "*30) + "\nA separate line of text."*6
			reply = choicebox(message, None, listChoices)
			print "Reply was:", reply

			message = "Pick something. "
			reply = choicebox(message, None, listChoices)
			print "Reply was:", reply

			message = "Pick something. "
			reply = choicebox("The list of choices is empty!", None, [])
			print "Reply was:", reply

		elif reply[0] == "multchoicebox":
			listChoices = ["aaa", "bbb", "ccc", "ggg", "hhh", "iii", "jjj", "kkk"
				, "LLL", "mmm" , "nnn", "ooo", "ppp", "qqq"
				, "rrr", "sss", "ttt", "uuu", "vvv"]

			message = "Pick as many choices as you wish."
			reply = multchoicebox(message,"DEMO OF multchoicebox", listChoices)
			print "Reply was:", reply

		elif reply[0] == "textbox":
			message = "Here is some sample text. " * 16
			reply = textbox(message, "Text Sample", text_snippet)
			print "Reply was:", reply

		elif reply[0] == "codebox":
			message = "Here is some sample code. " * 16
			reply = codebox(message, "Code Sample", code_snippet)
			print "Reply was:", reply

		else:
			msgbox("Choice\n\n" + choice + "\n\nis not recognized", "Program Logic Error")
			return


if __name__ == '__main__':
        args = []
        title = "FASTMat Software Installer"
        message1 = """SciDAC FASTMath Software Installer"""
        message2 = """The DOE Mathematics SciDAC FASTMath develops software for the
scalable solution of optimizations, eigenvalues and algebraic systems.  \n\n
The software installed is covered by a variety of licenses, please refer to
each package's license information before redistributing it. This installer
can also install additional packages that are used by the FASTMath packages."""

	result = buttonbox(message=message1, title="FASTMath Software Installer", choices = ["Cancel", "Continue"],fontSize = 20,message2=message2)
        if result == "Cancel": sys.exit()

	result = buttonbox(message='Should you encounter problems please send email\nto petsc-maint@mcs.anl.gov with all output\n', title="FASTMath Software Installer", choices = ["Cancel", "Continue"])
        if result == "Cancel": sys.exit()

        options = []
        packages = ["hypre (parallel preconditioners)","SuperLU_dist (parallel sparse direct solver)", "SuperLU","Sundials (parallel ODE integrators)"]
        reply = multchoicebox("Pick the optional FASTMath packages to install. PETSc will \nalways be installed. \n\nNote: many of these packages are not portable\nfor all machines, hence select only the packages you truly need.",title, packages)
        for i in reply:
             i = i.lower().replace(' ','')
             f = i.find('(')
             if f > 0: i = i[0:f]
             args.append('--download-'+i+'=1')

        packages = ["  MUMPS","Parmetis (parallel partitioning)","  Chaco","  Party","  PTScotch","  ml","  SPAI","Matlab"]
        reply = multchoicebox("Pick the other packages to install.\n\nAgain, only select the packages you truly need.",title, packages)
        for i in reply:
             i = i.lower().replace(' ','')
             f = i.find('(')
             if f > 0: i = i[0:f]
             args.append('--download-'+i+'=1')

        result = buttonbox('Compiler to use for compiling PETSc?\n\nC is recommended even if you plan to program in C++',title,choices = ['C','C++'])
        args.append( '--with-clanguage='+result)

        reply = indexbox('Use complex numbers; select only if needed',title,['Yes','No'])
        if reply == 1: args.append( '--with-scalar-type=complex')
        else: args.append( '--with-scalar-type=real')

        result = buttonbox('Precision of floating point numbers',title,choices = ['double','__float128','single'])
        args.append( '--with-precision='+result)

        reply = ynbox('Compile libraries so they may be used from Fortran?',title)
        if not reply: args.append( '--with-fc=0')

        reply = ynbox('Compile libraries so they may be used from Python?',title)
        if reply:
             args.append( '--with-python=1')

        reply = indexbox('Compilers to use?',title,['Any','GNU','non-GNU',"I'll indicate the compilers"])
        if reply == 1: args.append( '--with-vendor-compilers=0')
        elif reply == 2: args.append('--with-gnu-compilers=0')
        if reply == 3:
             reply = fileopenbox("Location of C compiler","Location of C compiler")
             args.append('--with-cc='+reply)
             if '--with-clanguage=c++' in args:
                 reply = fileopenbox("Location of C++ compiler","Location of C++ compiler")
                 args.append('--with-cxx='+reply)
             if not '--with-fc=0' in args:
                 reply = fileopenbox("Location of Fortran compiler","Location of Fortran compiler")
                 args.append('--with-fc='+reply)

        reply = ynbox('Compile debug versions of libraries? Recommended for all development.',title)
        if not reply: args.append('--with-debugging=0')

        reply = indexbox('Which version of BLAS and LAPACK do you wish to use?',title,['Have installer locate it', 'Install it',"I'll indicate its location"])
        if reply == 1:
             if not '--with-fc=0' in args: args.append('--download-fblaslapack')
             else: args.append('--download-f2cblaslapack')
        elif reply == 2:
           reply = diropenbox("Directory of BLAS and LAPACK libraries","Directory of BLAS and LAPACK libraries")
           if not reply: sys.exit()
           args.append('--with-blas-lapack-dir='+reply)

        reply = indexbox('Which version of MPI do you wish to use?',title,['Have installer locate it', 'Install MPICH-2','Install OpenMPI','None',"I'll indicate its location"])
        if reply == 3: args.append( '--with-mpi=0')
        elif reply == 1: args.append('--download-mpich=1')
        elif reply == 2: args.append('--download-openmpi=1')
        elif reply == 4:
           reply = diropenbox("Directory of MPI installation","Directory of MPI installation")
           if not reply: sys.exit()
           args.append('--with-mpi-dir='+reply)

        if reply == 4:
          reply = ynbox('Do MPI jobs need to be submitted with a batch system?',title)
          if reply: args.append('--with-batch=1')

        arch = ''
        while not arch:
           arch = enterbox("Name of this configuration",title,"arch-")
        args.append('-PETSC_ARCH='+arch)

        reply = diropenbox("Location of PETSc directory or where to download and compile packages","Location of PETSc directory or where to download and compile andpackages")
        if not reply: sys.exit()

        import os.path
        import sys

        petscroot = None
        if os.path.isfile(os.path.join(reply,'include','petscsys.h')):
          petscroot = os.path.join(reply,'petsc')
        else:
          ldir = os.listdir(reply)
          for i in ldir:
            if i.startswith('petsc') and os.path.isfile(os.path.join(reply,i,'include','petscsys.h')):
              y = ynbox('There is a subdirectory called '+os.path.join(reply,i)+'.Do you wish to use that?',title)
              if y: 
                petscroot = os.path.join(reply,i)
                break
          if not petscroot:
            y = ynbox('Could not locate PETSc directory, should I download it\nand install it in the directory '+reply+'?',title)
            if not y: sys.exit()

            result = buttonbox('Which version of PETSc should I download?\n\nPlease be patient after making your selection\nthis may take several minutes.'+reply,title,choices = ['Release','Development'])
            if result == 'Release':
              # download PETSc
              import urllib
              try:
                urllib.urlretrieve('http://ftp.mcs.anl.gov/pub/petsc/petsc.tar.gz', os.path.join(reply,'petsc.tar.gz'))
              except Exception, e:
                raise RuntimeError('Unable to download PETSc')
              import commands
              try:
                commands.getoutput('cd '+reply+'; gunzip petsc.tar.gz ; tar xf petsc.tar')
              except RuntimeError, e:
                raise RuntimeError('Error unzipping petsc.tar.gz'+str(e))
              os.unlink(os.path.join(reply, 'petsc.tar'))
            else:
              import commands
              try:
                commands.getoutput('cd '+reply+'; git clone https://bitbucket.org/petsc/petsc.git')
              except RuntimeError, e:
                raise RuntimeError('Error trying to obtain development version of PETSc with git'+str(e))
            ldir = os.listdir(reply)
            for i in ldir:
              # wrong because will pick up old petsc directories in this directory
              if i.startswith('petsc') and os.path.isfile(os.path.join(reply,i,'include','petscsys.h')): petscroot = os.path.join(reply,i)


        args.append('--with-shared-libraries=1')
        args.append('--with-external-packages-dir='+os.path.join(petscroot,arch,'externalpackages'))
        args = multenterbox("Configure options you have selected.", title, None, args)
        if not args: sys.exit()

        configfile=os.path.join(petscroot,'config-'+arch+'.py')
        f = file(configfile, 'w')
        f.write('#!/usr/bin/env python\n')
        f.write('if __name__ == \'__main__\':\n')
        f.write('  import sys\n')
        f.write('  sys.path.insert(0, "'+os.path.join(petscroot,'config')+'")\n')
        f.write('  import configure\n')
        f.write('  configure_options = '+repr(args)+'\n')
        f.write('  configure.petsc_configure(configure_options)\n')
        f.close()
        os.chmod(configfile,0755)
        msgbox('After hitting OK run\n\n cd '+petscroot+'\npython config-'+arch+'.py\n\nto continue the install')
        print("Execute the following two commands and follow the directions")
        print('cd '+petscroot)
        print('python config-'+arch+'.py')