def askString(message, length=40):
"""Asks the user to enter a string.
message: the window title.
length: expected maximum length for the string.
Returns the inserted string or None if the user canceled the input."""
retval = None
winY = screenH / 2 - 2
winWidth = max(len(message), length) + 4
winX = (screenW - winWidth) / 2
panel = CursesPanel(3, winWidth, winY, winX, title=message)
panel.focus()
window = panel._window
subWin = window.derwin(1, length, 1, 1)
subWin.keypad(1)
textBox = curses.textpad.Textbox(subWin)
textBox.stripspaces = True
curses.panel.update_panels()
curses.doupdate()
done = False
while not done:
c = subWin.getch()
if c == curses.ascii.NL:
retval = textBox.gather()
done = True
elif c == curses.ascii.ESC:
done = True # so that we return None
else:
textBox.do_command(c)
del textBox
del subWin
del window
return retval
def errorMessage(message):
"""Displays an error message."""
winY = screenH / 2 - 2
winX = (screenW - len(message)) / 2 + 2
winWidth = len(message) + 4
if len(message) < 5:
winWidth = 9
panel = CursesPanel(5, winWidth, winY, winX, "Error")
panel.focus()
panel._window.addstr(2, 2, message)
panel.getch()
del panel