<Swing Dev> [9] Review request for 8075084: https://bugs.openjdk.java.net/browse/JDK-8075084

[Alexandr Scherbatiy]

On 10/25/2016 4:24 PM, Semyon Sadetsky wrote:
> Hello,
>
> Please review fix for JDK9:
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8075084
>
> webrev: http://cr.openjdk.java.net/~ssadetsky/8075084/webrev.00/
>
> When a modal dialog is shown in scroll bar button click listener it 
> blocks all events targeted to the scroll bar owner window.
>
> At the same time clicking on scroll bar button triggers a timer which 
> should adjust scroll bar value automatically until mouse button is 
> released, i.e. until mouse release event comes to the pushed scroll 
> button. So, this timer is not stopped by the mouse release event 
> because it is rejected by the modal filter.  When modal dialog is 
> closed the timer continues to produce scroll adjustment events and the 
> dialog is shown again. Also the scroll button remains pushed and 
> hovered all the time (because it didn't get mouse release event).
>
> In the suggested fix the timer is started only if the scroll bar owner 
> window keeps input focus after the adjustment callback and the scroll 
> button is reset otherwise.

   Is it possible that a scroll bar lost the focus not because a new 
modal dialog opened by some other valid reason and the scroll timer 
should be started for this case?

   Thanks,
   Alexandr.

>
> --Semyon
>