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# tk common message boxes
#
# this module provides an interface to the native message boxes
# available in Tk 4.2 and newer.
#
# written by Fredrik Lundh, May 1997
#
#
# options (all have default values):
#
# - default: which button to make default (one of the reply codes)
#
# - icon: which icon to display (see below)
#
# - message: the message to display
#
# - parent: which window to place the dialog on top of
#
# - title: dialog title
#
# - type: dialog type; that is, which buttons to display (see below)
#
from tkinter.commondialog import Dialog
__all__ = ["showinfo", "showwarning", "showerror",
"askquestion", "askokcancel", "askyesno",
"askyesnocancel", "askretrycancel"]
#
# constants
# icons
ERROR = "error"
INFO = "info"
QUESTION = "question"
WARNING = "warning"
# types
ABORTRETRYIGNORE = "abortretryignore"
OK = "ok"
OKCANCEL = "okcancel"
RETRYCANCEL = "retrycancel"
YESNO = "yesno"
YESNOCANCEL = "yesnocancel"
# replies
ABORT = "abort"
RETRY = "retry"
IGNORE = "ignore"
OK = "ok"
CANCEL = "cancel"
YES = "yes"
NO = "no"
#
# message dialog class
class Message(Dialog):
"A message box"
command = "tk_messageBox"
#
# convenience stuff
# Rename _icon and _type options to allow overriding them in options
def _show(title=None, message=None, _icon=None, _type=None, **options):
if _icon and "icon" not in options: options["icon"] = _icon
if _type and "type" not in options: options["type"] = _type
if title: options["title"] = title
if message: options["message"] = message
res = Message(**options).show()
# In some Tcl installations, yes/no is converted into a boolean.
if isinstance(res, bool):
if res:
return YES
return NO
# In others we get a Tcl_Obj.
return str(res)
def showinfo(title=None, message=None, **options):
"Show an info message"
return _show(title, message, INFO, OK, **options)
def showwarning(title=None, message=None, **options):
"Show a warning message"
return _show(title, message, WARNING, OK, **options)
def showerror(title=None, message=None, **options):
"Show an error message"
return _show(title, message, ERROR, OK, **options)
def askquestion(title=None, message=None, **options):
"Ask a question"
return _show(title, message, QUESTION, YESNO, **options)
def askokcancel(title=None, message=None, **options):
"Ask if operation should proceed; return true if the answer is ok"
s = _show(title, message, QUESTION, OKCANCEL, **options)
return s == OK
def askyesno(title=None, message=None, **options):
"Ask a question; return true if the answer is yes"
s = _show(title, message, QUESTION, YESNO, **options)
return s == YES
def askyesnocancel(title=None, message=None, **options):
"Ask a question; return true if the answer is yes, None if cancelled."
s = _show(title, message, QUESTION, YESNOCANCEL, **options)
# s might be a Tcl index object, so convert it to a string
s = str(s)
if s == CANCEL:
return None
return s == YES
def askretrycancel(title=None, message=None, **options):
"Ask if operation should be retried; return true if the answer is yes"
s = _show(title, message, WARNING, RETRYCANCEL, **options)
return s == RETRY
# --------------------------------------------------------------------
# test stuff
if __name__ == "__main__":
print("info", showinfo("Spam", "Egg Information"))
print("warning", showwarning("Spam", "Egg Warning"))
print("error", showerror("Spam", "Egg Alert"))
print("question", askquestion("Spam", "Question?"))
print("proceed", askokcancel("Spam", "Proceed?"))
print("yes/no", askyesno("Spam", "Got it?"))
print("yes/no/cancel", askyesnocancel("Spam", "Want it?"))
print("try again", askretrycancel("Spam", "Try again?"))
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