RFR: 8207333: [linux] Column sorting is triggered always after context menu request on table header

[Andy Goryachev]

On Tue, 1 Apr 2025 17:31:14 GMT, Jose Pereda <jpereda at openjdk.org> wrote:

> Note: The JBS issue [JDK-8207333](https://bugs.openjdk.org/browse/JDK-8207333) refers to Linux, but it happens on macOS too. 
> 
> When a TableColumn has a ContextMenu, if the user right clicks on the tableColumnHeader, the ContextMenu shows up, but, as described on the issue, on macOS and Linux, the table gets sorted as well.
> 
> Currently, `TableColumnHeader#mouseReleasedHandler` checks for `MouseEvent::isPopupTriggered`, but it doesn't have a check on `mousePressed`. However,  it can be seen that a right click on the header has the following values for `MouseEvent:: isPopupTriggered` on the different platforms and mouse pressed and released events:
> 
> | isPopupTriggered on: | Windows  | macOS | Linux |
> | ------------- | ------------- | ------------- | ------------- |
> | mousePressed  | false  | true | true |
> | mouseReleased  | true  | false | false |
> 
> Also, the JavaDoc for `MouseEvent::isPopupTriggered` clearly states that:
> 
>> **Note**: Popup menus are triggered differently on different systems. Therefore, `popupTrigger` should be checked in both `onMousePressed` and `mouseReleased` for proper cross-platform functionality.
> 
> Therefore, this PR adds a check to `MouseEvent::isPopupTrigger` in the mouse pressed event, that can be used later on to cancel the header sorting when the mouse released event happens.
> 
> Also a system test has been added. It fails on macOS and Linux, and passes on Windows before this PR, and passes on the three platforms with this PR.

I can only test it on macOS and Windows.  Could someone with a linux system help please?

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PR Comment: https://git.openjdk.org/jfx/pull/1754#issuecomment-2770256133