This is an initial (incomplete) implementation of 8290037 for evaluation. If the approach is agreed, I will modify the rest of the `*PropertyBase` classes which use weak listeners, and add some tests.
I didn't use `Cleaner` because cleaning up a listener may block. ------------- Commit messages: - Initial (incomplete) implementation for evaluation Changes: https://git.openjdk.org/jfx/pull/827/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=827&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8290037 Stats: 192 lines in 4 files changed: 176 ins; 4 del; 12 mod Patch: https://git.openjdk.org/jfx/pull/827.diff Fetch: git fetch https://git.openjdk.org/jfx pull/827/head:pull/827 PR: https://git.openjdk.org/jfx/pull/827
