NPE on JideTabbedPane

[andrednasoftware]

When using JideTabbedPane on Netbeans and try to set a name on tab a NPE occurs:

java.lang.NullPointerException
at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI.paint(Unknown Source)
at javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
at javax.swing.JComponent.paintComponent(JComponent.java:778)
at javax.swing.JComponent.paint(JComponent.java:1054)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:39)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:78)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:115)
at java.awt.Container.paint(Container.java:1967)
at org.netbeans.modules.form.fakepeer.FakePeerContainer.paint(FakePeerContainer.java:89)
at javax.swing.JComponent.paintChildren(JComponent.java:901)
at javax.swing.JComponent.paint(JComponent.java:1063)
[catch] at org.netbeans.modules.form.ComponentLayer$DesignerPanel.paint(ComponentLayer.java:190)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at org.netbeans.modules.form.FormDesigner$1.paintChildren(FormDesigner.java:240)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:585)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JViewport.paint(JViewport.java:725)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at org.netbeans.swing.tabcontrol.TabbedContainer.paint(TabbedContainer.java:959)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at org.netbeans.core.windows.view.ui.MultiSplitPane.paint(MultiSplitPane.java:330)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:585)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5221)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1482)
at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1413)
at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:311)
at javax.swing.RepaintManager.paint(RepaintManager.java:1206)
at javax.swing.JComponent._paintImmediately(JComponent.java:5169)
at javax.swing.JComponent.paintImmediately(JComponent.java:4980)
at javax.swing.JComponent.paintImmediately(JComponent.java:4961)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:770)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:728)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:677)
at javax.swing.RepaintManager.access$700(RepaintManager.java:59)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1621)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
at java.awt.EventQueue.access$000(EventQueue.java:101)
at java.awt.EventQueue$3.run(EventQueue.java:666)
at java.awt.EventQueue$3.run(EventQueue.java:664)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

[JIDE Support]

Looks like the _tabbedPane field in the BasicJideTabbedPaneUI is null at that moment, which should not happen. Can you please let us know the steps that you reproduce the issue in Netbeans? We will try to see if we could reproduce it on our end.

Thanks,

[andrednasoftware]

The steps are:

1- Drag a JideTabbedPane from Pallete into a Jpanel
2- Drag a JPanel into JideTabbedPane to construct a Tab
3- DoubleClick on Tab title to edit
4- Replace the default title "tab1" with a new title and press Enter

Then a stack trace is diaplayed above the form.

[JIDE Support]

Just tried the latest JIDE release with NetBeans 6.9.1 but could not reproduce the issue. Can you please let me know your JIDE and NetBeans version?

Thanks,

[andrednasoftware]

NetBeans IDE 7.0.1 (Build 201107282000)
Java: 1.7.0; Java HotSpot(TM) Client VM 21.0-b17
JIDE 3.2.1

[andrednasoftware]

Hi,

Thank you for your attention.
Were you able to reproduce the problem? Found some solution ?

[JIDE Support]

Sorry that somehow we missed your post. Tried the JIDE 3.2.3, JDK 1.7.0 and Netbeans 7.0.1 but could not reproduce the issue. The screencast is uploaded at http://screencast.com/t/elowIQFge9Ab FYI.

Thanks,

[andrednasoftware]

Hi,

You forgot the step 3 and 4.

3- DoubleClick on Tab title to edit
4- Replace the default title "tab1" with a new title and press Enter

[JIDE Support]

Thanks. I do see the JideTabbedPane disappears on changing the text although it could be displayed later by choosing it. However, I cannot see any stack information regarding an exception. Not sure if I missed anything since Netbeans is not the IDE I frequently use. The screencast is posted here FYI. http://screencast.com/t/4rBCi1Iz

Thanks,

[andrednasoftware]

Hi,

I don't know exactly why the exception was not displayed for you.
In my tests everything happens differently.
A screencast might help you out on something, http://screencast.com/t/oHWFzVfvg

[JIDE Support]

May I ask which OS you are using? Looks like it's not Windows.

Thanks,

[andrednasoftware]

Hi,

It's Windows XP (SP3)

[JIDE Support]

Unfortunately, I cannot reproduce the issue in Windows XP machine either. Since the NPE indicates the JideTabbedPane is null in the UI, it might relate to how Netbeans repaint the UI on editing. It's always a shaky part and I would recommend you to write the code for JideTabbedPane for now. The screen cast of the my test in XP is uploaded at http://screencast.com/t/ERFHk5Tw FYI.

Thanks,

[andrednasoftware]

Thank you.
For now I will use this way.
If there is anything I can do to help solve the problem, contact me.