Using events vs. directly calling parent application function from a child in Flex / Flash Builder

Question

If I need to call a specific function in the parent application from a child in a flex project, what's the best practice for this? Would it be to dispatch a custom event from the child and have a listener call that function? Or to directly call the function with FlexGlobals.topLevelApplication?

Answer 1

OOP会说事件是要走的路，因为全局变量是反对OOP的，并且因为事件至少会促进呼叫者和被呼叫者之间的某种程度的分离。