Optional onCalled when the state of validation has changed on a ValidatableValueHost. That includes validate(), clearValidation(), setBusinessLogicErrors(), clearBusinessLogicErrors() and a few edge cases. Supplies the current ValidationState to the callback. Examples: Use to notify the validation related aspects of the component to refresh, such as showing error messages and changing style sheets. Use to change the disabled state of the submit button based on validity. See also onValidationStateChanged for a similar callback from the ValidationManager.
Optional onCalled when any ValueHost had its ValueHostInstanceState changed. React example: React component useState feature retains this value and needs to know when to call the setValueHostInstanceState() with the stateToRetain. You can setup the same callback on individual ValueHosts. Here, it aggregates all ValueHost notifications.
Optional onCalled when the ValueHost's Value property has changed. If setup, you can prevent it from being fired with the options parameter of setValue() to avoid round trips where you already know the details. You can setup the same callback on individual ValueHosts. Here, it aggregates all ValueHost notifications.
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Provides callback hooks for the consuming system to supply to IValidatableValueHostBaseCallbacks.