question: private void zInternalSetTimeTextField ( String text ) { skipTextFieldChangedFunctionWhileTrue = true ; if ( settings . useLowercaseForDisplayTime ) { text = text . toLowerCase ( settings . getLocale ( ) ) ; } timeTextField . setText ( text ) ; skipTextFieldChangedFunctionWhileTrue = false ; zEventTextFieldChanged ( ) ; }
target:  zInternalSetTimeTextField, This is called whenever we need to programmatically change the time text field. The purpose of this function is to make sure that text field change events only occur once per programmatic text change, instead of occurring twice. The default behavior is that the text change event will fire twice. (By default, it changes once to clear the text, and changes once to change it to new text.)