Error mousing over the editing area after loading a notes layer

[DeeHants]

What steps will reproduce the problem?

1. Zoom to an area
2. Download notes
3. Mouse over the editing area

What is the expected result?

The notes appear and no crash

What happens instead?

The notes appear with a crash

Please provide any additional information below. Attach a screenshot if possible.

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2016-04-28 12:48:16 +0200 (Thu, 28 Apr 2016)
Build-Date:2016-04-28 10:51:36
Revision:10161
Relative:URL: ^/trunk

Identification: JOSM/1.5 (10161 en_GB) Windows 7 64-Bit
Memory Usage: 123 MB / 989 MB (19 MB allocated, but free)
Java version: 1.8.0_71-b15, Oracle Corporation, Java HotSpot(TM) Client VM
Dataset consistency test: No problems found

Plugins:
- InfoMode (31772)
- OpeningHoursEditor (31772)
- buildings_tools (31895)
- contourmerge (1014)
- gpsblam (31772)
- imageryadjust (31772)
- indoor_sweepline (32103)
- indoorhelper (32134)
- measurement (31895)
- public_transport (31895)
- public_transport_layer (32142)
- reverter (32005)
- splinex (31895)
- turnrestrictions (31895)
- undelete (31895)
- utilsplugin2 (32099)

Last errors/warnings:
- E: java.lang.NullPointerException
- E: java.lang.NullPointerException
- E: java.lang.NullPointerException
- E: java.lang.NullPointerException
- E: java.lang.NullPointerException

java.lang.NullPointerException
	at org.openstreetmap.josm.gui.dialogs.NotesDialog$NoteRenderer.getListCellRendererComponent(NotesDialog.java:240)
	at org.openstreetmap.josm.gui.dialogs.NotesDialog$NoteRenderer.getListCellRendererComponent(NotesDialog.java:230)
	at javax.swing.plaf.basic.BasicListUI.updateLayoutState(Unknown Source)
	at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayoutState(Unknown Source)
	at javax.swing.plaf.basic.BasicListUI.paintImpl(Unknown Source)
	at javax.swing.plaf.basic.BasicListUI.paint(Unknown Source)
	at javax.swing.plaf.ComponentUI.update(Unknown Source)
	at javax.swing.JComponent.paintComponent(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JViewport.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at org.openstreetmap.josm.gui.widgets.MultiSplitPane.paintChildren(MultiSplitPane.java:205)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JSplitPane.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JLayeredPane.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paintToOffscreen(Unknown Source)
	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
	at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
	at javax.swing.RepaintManager.paint(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
	at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
	at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
	at java.awt.Container.paint(Unknown Source)
	at java.awt.Window.paint(Unknown Source)
	at javax.swing.RepaintManager$4.run(Unknown Source)
	at javax.swing.RepaintManager$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.access$1200(Unknown Source)
	at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
	at java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

[bastiK]

Could you please check if the bug is related to the particular area you are downloading, and if so, report the downloaded area?

[DeeHants]

Ohh....
My location works, but download around 0,0 and it fails:
​http://www.openstreetmap.org/search?query=0%2C0#map=15/-0.0003/-0.0001&layers=N

[bastiK]

In 10162/josm:

fixed #12799 - Error mousing over the editing area after loading a notes layer

[bastiK]

The cause are notes with 0 comments. It appears scripting accidents happen most likely at 0,0.