# tk common message boxes

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#

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# this module provides an interface to the native message boxes

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# available in Tk 4.2 and newer.

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#

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# written by Fredrik Lundh, May 1997

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#

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#

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# options (all have default values):

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#

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# - default: which button to make default (one of the reply codes)

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#

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# - icon: which icon to display (see below)

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#

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# - message: the message to display

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#

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# - parent: which window to place the dialog on top of

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#

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# - title: dialog title

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#

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# - type: dialog type; that is, which buttons to display (see below)

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#

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from tkinter.commondialog import Dialog

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#

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# constants

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# icons

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ERROR = "error"

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INFO = "info"

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QUESTION = "question"

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WARNING = "warning"

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# types

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ABORTRETRYIGNORE = "abortretryignore"

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OK = "ok"

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OKCANCEL = "okcancel"

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RETRYCANCEL = "retrycancel"

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YESNO = "yesno"

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YESNOCANCEL = "yesnocancel"

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# replies

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ABORT = "abort"

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RETRY = "retry"

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IGNORE = "ignore"

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OK = "ok"

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CANCEL = "cancel"

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YES = "yes"

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NO = "no"

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#

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# message dialog class

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class Message(Dialog):

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"A message box"

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command = "tk_messageBox"

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#

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# convenience stuff

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# Rename _icon and _type options to allow overriding them in options

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def _show(title=None, message=None, _icon=None, _type=None, **options):

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if _icon and "icon" not in options: options["icon"] = _icon

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if _type and "type" not in options: options["type"] = _type

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if title: options["title"] = title

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if message: options["message"] = message

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res = Message(**options).show()

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# In some Tcl installations, yes/no is converted into a boolean.

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if isinstance(res, bool):

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if res:

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return YES

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return NO

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# In others we get a Tcl_Obj.

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return str(res)

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def showinfo(title=None, message=None, **options):

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"Show an info message"

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return _show(title, message, INFO, OK, **options)

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def showwarning(title=None, message=None, **options):

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"Show a warning message"

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return _show(title, message, WARNING, OK, **options)

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def showerror(title=None, message=None, **options):

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"Show an error message"

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return _show(title, message, ERROR, OK, **options)

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def askquestion(title=None, message=None, **options):

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"Ask a question"

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return _show(title, message, QUESTION, YESNO, **options)

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def askokcancel(title=None, message=None, **options):

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"Ask if operation should proceed; return true if the answer is ok"

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s = _show(title, message, QUESTION, OKCANCEL, **options)

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return s == OK

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def askyesno(title=None, message=None, **options):

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"Ask a question; return true if the answer is yes"

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s = _show(title, message, QUESTION, YESNO, **options)

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return s == YES

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def askyesnocancel(title=None, message=None, **options):

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"Ask a question; return true if the answer is yes, None if cancelled."

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s = _show(title, message, QUESTION, YESNOCANCEL, **options)

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# s might be a Tcl index object, so convert it to a string

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s = str(s)

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if s == CANCEL:

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return None

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return s == YES

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def askretrycancel(title=None, message=None, **options):

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"Ask if operation should be retried; return true if the answer is yes"

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s = _show(title, message, WARNING, RETRYCANCEL, **options)

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return s == RETRY

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# --------------------------------------------------------------------

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# test stuff

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if __name__ == "__main__":

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print("info", showinfo("Spam", "Egg Information"))

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print("warning", showwarning("Spam", "Egg Warning"))

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print("error", showerror("Spam", "Egg Alert"))

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print("question", askquestion("Spam", "Question?"))

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print("proceed", askokcancel("Spam", "Proceed?"))

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print("yes/no", askyesno("Spam", "Got it?"))

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print("yes/no/cancel", askyesnocancel("Spam", "Want it?"))

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print("try again", askretrycancel("Spam", "Try again?"))

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