@Override
		public void stateChanged(ChangeEvent e) {
			if (isChanging) {
				return;
			}
			setStatusText("");
			lengthChanged();
		}
Listener on the length text fields; update other fields
according to the entered value.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/memory/ExpandBlockDialog.java