nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Is there an onUpdate function for the python add-in module so that I can toggle a button state (enable/disable) based on defined parameters, like a feature layer having one selected feature?

BryanTaylor

I have added a toolbar and a button using python add-in assistant (arcmap 10.4). I would like the button to be enable, if and only if, one particular layer (named operations) has exactly one feature selected. I can easily use the __init__ function of the button to test if these circumstances are met at runtime. If they are, the button is enabled, if they are not, the button is disabled. Now, I can't seem to locate any help finding if there is an onUpdate function that can "look" for changes and test to see if the right conditions are met

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