RFR: 8196065: ListChangeListener getRemoved() returns items that were not removed. [v10]

[Marius Hanl]

On Sun, 27 Jun 2021 12:09:24 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> modules/javafx.controls/src/main/java/javafx/scene/control/ControlUtils.java line 109:
>> 
>>> 107: 
>>> 108:             @Override public int getRemovedSize() {
>>> 109:                 checkState();
>> 
>> Is this needed here? Just wondering because it was not there before.
>
> Without the check, it would be possible to inspect the size without calling `next()` first.

Right. But I want to understand why this was not there before. 

Is this needed, because if you didn't called `next()`, there is no change yet to retrieve the removed size?

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PR: https://git.openjdk.java.net/jfx/pull/478