Frederic Marion-Poll March 31, 2020 at 10:36 am
in the Icy documentation, there are 2 types of SequenceListener, one of which is called WeakSequenceListener. Is this class still relevant? I did not find it in use anywhere. The purpose of WeakListener is to be able to do a “getListener”?
Thank you in advance for your help
FredFrederic Marion-Poll March 31, 2020 at 11:06 am
PS more specifically, I was looking for a way to know when a viewer is displaying a different image from a sequence. I suppose I should not add a listener to the sequence, but rather to its viewer?
Frederic Marion-Poll March 31, 2020 at 12:02 pm
- This reply was modified 2 years, 4 months ago by Frederic Marion-Poll.
PPS problem solved by listening to the Viewer. Sorry for the previous PS. But I would still be interested to understand the difference between a plain listener and a weaklistener.Stephane Dallongeville March 31, 2020 at 2:44 pm
Indeed when you want to have change from the viewer (Z / T position change for instance) then you need to listen the Viewer then. About Weak vs no Weak, it’s a java thing 🙂 Using a WeakListener mean that the listener won’t be retained by the object you are listening (it uses a WeakReference to the listener and automatically remove it when the reference become null). It may be useful when you want to add a listener to an object that you won’t be able to remove later (the listener), avoiding retaining your listener (and attached object) in memory.
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