Allow a Tkinter GUI to interrupt a long-lasting computation.
There is one instance-object of this class created by the projtls
module, it should not be necessary to make more.
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Methods
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__init__
cancelbusytask
checkifcanceled
reset
setidletask
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__init__
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__init__ ( self, interval=0.1 )
Constructor.
- interval
the minimum interval (in seconds) between
GUI update calls.
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cancelbusytask
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cancelbusytask ( self, but='Abort' )
Abort a long-lasting computation from a GUI button.
(For the singleton instance this is available as
"projtls.cancelbusytask") |
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checkifcanceled
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checkifcanceled ( self )
Check whether an abort was requested from a GUI button.
Call this routine regularly at safe points in a long calculation (For
the singleton instance this is available as "projtls.checkifcanceled")
No value is returned. If the long calculation should be interrupted,
a gui.command.GuiCancel exception (subclass of KeyboardInterrupt)
is raised.
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Exceptions
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command.GuiCancel( "Busy task canceled" )
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reset
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reset ( self )
Reset the cancel request once it has been handled. |
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setidletask
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setidletask ( self, idletask )
Sets the idle task that should be used to try and keep the
GUI active. For the singleton instance, this is automatically called
by gui.setup.setup() |
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