RFR: 6616245: NullPointerException when using JFileChooser with a custom FileView [v2]

[Alexey Ivanov]

On Fri, 30 Sep 2022 10:57:37 GMT, Tejesh R <tr at openjdk.org> wrote:

>> When a custom `FileView` is used and folder traversal is restricted to a particular directory NPE occurs when user tries to traverse/select other folders except traversable folder. This is caused because when user selects folder other than traversable, the traversal is rejected and hence no file is selected as `currentDirectory` of `JFileChooser`. When user tries to access the restricted folder second time, previous selected file check is failing because of NPE since `getFileChooser().getCurrentDirectory();` is null. To fix the issue, NPE check is added.
>
> Tejesh R has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Updated based on review comments

test/jdk/javax/swing/JFileChooser/FileViewNPETest.java line 40:

> 38:  * @bug 6616245
> 39:  * @key headful
> 40:  * @requires (os.family == "windows" | os.family == "linux")

Is there a specific reason to exclude macOS? Is it only because the default L&F isn't Metal?

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PR: https://git.openjdk.org/jdk/pull/10485