Integrated: 6911375: mouseWheel has no effect without vertical scrollbar

[Prasanta Sadhukhan]

On Wed, 23 Feb 2022 04:24:41 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> It is observed that mouseWheel doesn't scroll through a list if there is no scrollbar even though pressing PageUp/Down using keyboard moves up/down the list.
> Issue stems from the fact that BasicScrollPaneUI.Handler.mouseWheelMoved() skips the mouse wheel events when the scrollbar is not visible. 
> Fixed to handle mouseWheelEvent even though scrollbar is not visible with the assumption that if both vertical and horizontal scrollbar is not visible, then assume default orientation to be vertical.
> 
> Existing jtreg, jck tests are ok. All L&F works well with the fix and testcase works in all platforms except on mac which will be handled separately.

This pull request has now been integrated.

Changeset: 832729b4
Author:    Prasanta Sadhukhan <psadhukhan at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/832729b41e690d6f05da71997bbe2a74b2d6dada
Stats:     138 lines in 2 files changed: 135 ins; 1 del; 2 mod

6911375: mouseWheel has no effect without vertical scrollbar

Reviewed-by: aivanov

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PR: https://git.openjdk.java.net/jdk/pull/7585