[NUI][API10] Remove DynamicProperty callback if URL changed + Make more thread safe enough #6508
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This PR is cherry-pick of #6504
Let us remove DynamicProperty callbacks if URL changes. So far, we discard the callbacks if visual was changed. But, the callbacks, which NUI stored, were not removed and remained alive whenever we changed the URL.
Let us ensure their removal when URL changed (~= Visual Changed)
To avoid race condition, let we add lock feature before change
InternalSavedDynamicPropertyCallbacks
(Since we can access this dictionary from various threads.) and makeweakReferencesOfLottie
asConcurrentDictionary
type.Note : Since we need to iterate by
InternalSavedDynamicPropertyCallbacks.Keys
we need to use lock, instead ofConcurrentDictionary
.TODO : There are some cases where we don't want to destroy registered callbacks. They will remain active in the future. We make relative sample at
LottieAnimationViewDynamicPropertyTest.cs
. Let we passTest4
case show dynmaic property well.