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https://issues.apache.org/jira/browse/PIVOT-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13938026#comment-13938026
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Roger Whitcomb commented on PIVOT-938:
--------------------------------------
I believe this is the same underlying problem as PIVOT-927, which has been
fixed already in the (unreleased) 2.0.4 version and trunk. This might be a
reason to push up the release of 2.0.4 since we have an active user with a
serious problem.
> Method getMouseLocation returns null
> ------------------------------------
>
> Key: PIVOT-938
> URL: https://issues.apache.org/jira/browse/PIVOT-938
> Project: Pivot
> Issue Type: Bug
> Affects Versions: 2.0.3
> Reporter: Łukasz Hanusiak
> Assignee: Sandro Martini
> Fix For: 2.0.4, 2.1
>
>
> Recently my application crashed with following stack trace:
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - java.lang.NullPointerException
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at org.apache.pivot.wtk.Component$1.run(Component.java:2771)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at
> org.apache.pivot.wtk.ApplicationContext$QueuedCallback.run(ApplicationContext.java:1607)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.event.InvocationEvent.dispatch(Unknown Source)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventQueue.access$200(Unknown Source)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventQueue$3.run(Unknown Source)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventQueue$3.run(Unknown Source)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.security.AccessController.doPrivileged(Native Method)
> ERROR 2014-03-08 18:42:26,265 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown
> Source)
> ERROR 2014-03-08 18:42:26,281 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventQueue.dispatchEvent(Unknown Source)
> ERROR 2014-03-08 18:42:26,281 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
> ERROR 2014-03-08 18:42:26,281 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
> ERROR 2014-03-08 18:42:26,281 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
> ERROR 2014-03-08 18:42:26,281 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
> ERROR 2014-03-08 18:42:26,281 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
> ERROR 2014-03-08 18:42:26,281 AWT-EventQueue-0 pl.com.stam.bs3lsm.BarrelS3App
> - at java.awt.EventDispatchThread.run(Unknown Source)
> I traced error to following piece of code:
> triggerTooltipCallback = ApplicationContext.scheduleCallback(new Runnable() {
> @Override
> public void run() {
> Point mouseLocationLocal = getMouseLocation();
> componentTooltipListeners.tooltipTriggered(Component.this,
> mouseLocationLocal.x, mouseLocationLocal.y);
> }
> }, tooltipDelay);
> It seem like value returned from getMouseLocation() is null for some reason.
> Unfortunately I am not able to reproduce this error. Do you have any ideas
> how to avoid such problems in future?
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