[Rev 01] RFR: 8193800: TreeTableView selection changes on sorting

[Ambarish Rapte]

On Tue, 2 Jun 2020 21:00:27 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Ambarish Rapte has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Change isSortingInProgress to package scope
>
> modules/javafx.controls/src/main/java/javafx/scene/control/TreeTableView.java line 1822:
> 
>> 1821:     public void sort() {
>> 1822:         sortingInProgress = true;
>> 1823:         final ObservableList<TreeTableColumn<S,?>> sortOrder = getSortOrder();
> 
> I presume that sorting cannot be called recursively?

The `sort()` is called only once for a `TreeTableView`. This method does not perform the actual sorting but it is
performed by the sort policy(`DEFAULT_SORT_POLICY`).  `DEFAULT_SORT_POLICY` initiates the sorting by calling
`rootItem.sort()`, which results in call to `TreeItem.doSort()`. `TreeItem.doSort()` makes the final call to sort the
children list, this method gets executed once for the root TreeItem and then for each expanded child TreeItem.

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PR: https://git.openjdk.java.net/jfx/pull/244